/**
 * APP.CSS - Consolidated Application Styles
 * All shared styles for the Libre AI application
 *
 * Sections:
 * 1. Global Resets & Typography
 * 2. Form Elements
 * 3. Buttons
 * 4. Modals
 * 5. App Layout & Sidebar
 * 6. Main Content Area
 * 7. Components (Badges, Cards, File Upload, Scores, Tables)
 * 8. Detection Pages (Analysis Header, Forms, Results)
 * 9. Shared Page Patterns
 * 10. Utilities & Animations
 * 11. Responsive Styles
 */

/* ========================================
   1. GLOBAL RESETS & TYPOGRAPHY
   ======================================== */

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: var(--font-primary);
    line-height: var(--leading-normal);
    color: var(--text-primary);
    background: var(--bg-primary);
    min-height: 100vh;
    margin: 0;
    padding: 0;
}

h1 {
    font-size: var(--text-3xl);
    font-weight: var(--font-semibold);
}

h2 {
    font-size: var(--text-2xl);
    font-weight: var(--font-semibold);
}

h3 {
    font-size: var(--text-xl);
    font-weight: var(--font-semibold);
}

h4 {
    font-size: var(--text-lg);
    font-weight: var(--font-medium);
}

p {
    font-size: var(--text-base);
    line-height: var(--leading-relaxed);
}

label {
    font-size: var(--text-sm);
    font-weight: var(--font-semibold);
}

/* ========================================
   2. FORM ELEMENTS
   ======================================== */

.form-group {
    position: relative;
    z-index: 2;
    margin-bottom: var(--spacing-xl);
}

.form-group label {
    display: block;
    font-size: var(--text-sm);
    font-weight: var(--font-medium);
    color: var(--text-primary);
    margin-bottom: var(--spacing-sm);
}

.form-group label .required {
    color: var(--danger);
}

.form-group label .optional {
    color: var(--text-secondary);
    font-weight: var(--font-normal);
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: var(--input-padding-y) var(--input-padding-x);
    border: 2px solid var(--border);
    border-radius: var(--border-radius-md);
    font-size: var(--text-sm);
    color: var(--text-primary);
    background: white;
    font-family: inherit;
    transition: var(--transition-base);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--secondary);
    box-shadow: 0 0 0 3px rgba(34, 197, 94, 0.2);
}

.form-group input::placeholder,
.form-group textarea::placeholder {
    color: var(--text-tertiary);
}

textarea {
    min-height: 120px;
    resize: vertical;
    line-height: var(--leading-relaxed);
}

/* Input Styles */
.input-text,
.input-url,
.input-email,
.url-input,
.title-input {
    width: 100%;
    padding: var(--input-padding-y) var(--input-padding-x);
    border: 2px solid var(--border);
    border-radius: var(--border-radius-md);
    font-size: var(--text-sm);
    background: white;
    color: var(--text-primary);
    transition: var(--transition-base);
}

.input-text:focus,
.input-url:focus,
.input-email:focus,
.url-input:focus,
.title-input:focus {
    outline: none;
    border-color: var(--secondary);
    box-shadow: 0 0 0 3px rgba(34, 197, 94, 0.1);
}

.input-text::placeholder,
.input-url::placeholder,
.input-email::placeholder {
    color: var(--text-tertiary);
}

/* Textarea */
.textarea,
.content-textarea {
    width: 100%;
    min-height: 300px;
    padding: var(--input-padding-y) var(--input-padding-x);
    border: 2px solid var(--border);
    border-radius: var(--border-radius-md);
    font-size: var(--text-sm);
    color: var(--text-primary);
    background: white;
    font-family: inherit;
    line-height: 1.6;
    resize: vertical;
    transition: var(--transition-base);
}

.textarea:focus,
.content-textarea:focus {
    outline: none;
    border-color: var(--secondary);
    box-shadow: 0 0 0 3px rgba(34, 197, 94, 0.2);
}

/* Select Dropdown */
.select,
.project-select {
    width: 100%;
    padding: var(--input-padding-y) 40px var(--input-padding-y) var(--input-padding-x);
    border: 2px solid var(--border);
    border-radius: var(--border-radius-md);
    background: white;
    font-size: var(--text-sm);
    color: var(--text-primary);
    cursor: pointer;
    appearance: none;
    background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' fill='none' viewBox='0 0 20 20'%3e%3cpath stroke='%236b7280' stroke-linecap='round' stroke-linejoin='round' stroke-width='1.5' d='m6 8 4 4 4-4'/%3e%3c/svg%3e");
    background-position: right 12px center;
    background-repeat: no-repeat;
    background-size: 16px;
    transition: var(--transition-base);
}

.select:focus,
.project-select:focus {
    outline: none;
    border-color: var(--secondary);
    box-shadow: 0 0 0 3px rgba(34, 197, 94, 0.2);
}

.project-selector {
    display: flex;
    gap: var(--gap-md);
    align-items: flex-end;
}

.project-select-wrapper {
    flex: 1;
    position: relative;
}

.url-input-group {
    display: flex;
    gap: var(--gap-md);
    align-items: stretch;
}

/* ========================================
   3. BUTTONS
   ======================================== */

.btn-primary,
.btn-secondary {
    padding: var(--button-padding-y) var(--button-padding-x);
    border-radius: var(--border-radius-md);
    font-size: var(--text-sm);
    font-weight: var(--font-medium);
    cursor: pointer;
    transition: var(--transition-base);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--gap-sm);
    text-decoration: none;
    border: none;
}

.btn-primary {
    background: var(--secondary);
    color: white;
}

.btn-primary:hover:not(:disabled) {
    background: var(--secondary-light);
    transform: translateY(-1px);
    box-shadow: var(--shadow-primary);
}

.btn-primary:active {
    transform: translateY(0);
}

.btn-primary:disabled,
.btn-primary.loading {
    opacity: 0.7;
    cursor: not-allowed;
    transform: none;
}

.btn-secondary {
    background: transparent;
    color: var(--text-secondary);
    border: 1px solid var(--border);
}

.btn-secondary:hover {
    background: var(--bg-secondary);
    color: var(--text-primary);
}

/* Button on Gradient Background */
.btn-on-gradient,
.back-btn,
.new-analysis-btn {
    background: var(--overlay-white-15);
    border: 1px solid var(--overlay-white-30);
    color: white;
    padding: var(--button-padding-y) var(--button-padding-x);
    border-radius: var(--border-radius-md);
    font-size: var(--text-sm);
    font-weight: var(--font-medium);
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: var(--gap-sm);
    transition: var(--transition-base);
    backdrop-filter: var(--glass-blur);
}

.btn-on-gradient:hover,
.back-btn:hover,
.new-analysis-btn:hover {
    background: var(--overlay-white-25);
    border-color: rgba(255, 255, 255, 0.4);
    transform: translateY(-1px);
}

.back-btn {
    position: absolute;
    top: var(--spacing-xl);
    right: var(--padding-card);
    z-index: 3;
}

.new-analysis-btn {
    position: absolute;
    top: var(--spacing-xl);
    right: 155px;
    z-index: 3;
}

.new-analysis-btn.hidden {
    display: none;
}

/* Small Accent Button */
.btn-accent-small,
.btn-scan-file {
    background: var(--overlay-green-05);
    color: var(--secondary);
    border: 1px solid rgba(34, 197, 94, 0.2);
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--border-radius-sm);
    font-size: var(--text-xs);
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: var(--gap-xs);
    transition: var(--transition-base);
}

.btn-accent-small:hover,
.btn-scan-file:hover {
    background: rgba(34, 197, 94, 0.2);
}

/* Recovery Button */
.btn-recover {
    background: var(--secondary);
    color: white;
    border: none;
    padding: var(--button-padding-y) var(--button-padding-x);
    border-radius: var(--border-radius-md);
    font-size: var(--text-sm);
    font-weight: var(--font-medium);
    cursor: pointer;
    transition: var(--transition-base);
    display: flex;
    align-items: center;
    gap: var(--gap-sm);
    white-space: nowrap;
}

.btn-recover:hover {
    background: var(--secondary-light);
    transform: translateY(-1px);
    box-shadow: var(--shadow-primary);
}

.btn-recover:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

/* Analysis Action Buttons */
.btn-scan-later {
    flex: 1;
    background: transparent;
    color: var(--text-secondary);
    border: 1px solid var(--border);
    padding: var(--button-padding-y) var(--button-padding-x);
    border-radius: var(--border-radius-md);
    font-size: var(--text-sm);
    font-weight: var(--font-medium);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--gap-sm);
    transition: var(--transition-base);
}

.btn-scan-later:hover {
    background: var(--bg-secondary);
    color: var(--text-primary);
}

.btn-scan-now {
    flex: 2;
    background: var(--secondary);
    color: white;
    border: none;
    padding: var(--button-padding-y) var(--button-padding-x);
    border-radius: var(--border-radius-md);
    font-size: var(--text-sm);
    font-weight: var(--font-medium);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--gap-sm);
    transition: var(--transition-base);
}

.btn-scan-now:hover {
    transform: translateY(-1px);
    background: var(--secondary-light);
    box-shadow: var(--shadow-primary);
}

.btn-scan-now.loading {
    opacity: 0.8;
    cursor: not-allowed;
}

/* Project Management Buttons */
.btn-new-project,
.btn-view-project {
    background: var(--secondary);
    color: white;
    border: none;
    padding: var(--spacing-md);
    border-radius: var(--border-radius-md);
    font-size: var(--text-sm);
    font-weight: var(--font-medium);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-xs);
    transition: var(--transition-base);
    white-space: nowrap;
}

.btn-view-project {
    min-width: 44px;
}

.btn-new-project:hover,
.btn-view-project:hover {
    background: var(--secondary-light);
    transform: translateY(-1px);
    box-shadow: var(--shadow-primary);
}

/* Action Buttons */
.btn-action {
    padding: 8px 12px;
    border: 1px solid var(--border);
    border-radius: var(--border-radius-sm);
    background: var(--bg-primary);
    cursor: pointer;
    font-size: var(--text-xs);
    font-weight: var(--font-medium);
    transition: var(--transition-base);
    color: var(--text-primary);
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
}

.btn-action:hover {
    background: var(--bg-secondary);
}

.btn-action.primary {
    background: var(--secondary);
    color: white;
    border-color: var(--secondary);
}

.btn-action.primary:hover {
    background: var(--secondary-light);
}

.btn-action.danger {
    color: var(--danger);
    border-color: #fecaca;
}

.btn-action.danger:hover {
    background: #fef2f2;
    border-color: #fca5a5;
}

.btn-close-modal {
    flex: 1;
    background: var(--bg-secondary);
    color: var(--text-primary);
    border: none;
    padding: var(--button-padding-y) var(--button-padding-x);
    border-radius: var(--border-radius-md);
    font-size: var(--text-sm);
    font-weight: var(--font-medium);
    cursor: pointer;
    transition: var(--transition-base);
}

.btn-close-modal:hover {
    background: var(--bg-tertiary);
}

.btn-text {
    display: inline;
}

.btn-loading {
    display: none;
}

.btn-primary.loading .btn-text,
.btn-secondary.loading .btn-text {
    display: none;
}

.btn-primary.loading .btn-loading,
.btn-secondary.loading .btn-loading {
    display: inline;
}

/* ========================================
   4. MODALS
   ======================================== */

.modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.8);
    backdrop-filter: blur(5px);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: var(--z-modal);
    opacity: 1;
    transition: all var(--transition-slow);
}

.modal.hidden {
    opacity: 0;
    pointer-events: none;
}

.modal-content {
    background: var(--bg-primary);
    border-radius: var(--border-radius-xl);
    width: 90%;
    max-width: 500px;
    max-height: 90vh;
    overflow-y: auto;
    transform: scale(1);
    transition: transform var(--transition-slow);
    box-shadow: var(--shadow-xl);
}

.modal.hidden .modal-content {
    transform: scale(0.9);
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-lg) var(--spacing-xl);
    border-bottom: 1px solid var(--border);
}

.modal-header h3 {
    margin: 0;
    color: var(--text-primary);
    font-size: var(--text-xl);
    font-weight: var(--font-semibold);
}

.close-modal {
    background: none;
    border: none;
    font-size: 24px;
    color: var(--text-secondary);
    cursor: pointer;
    padding: 0;
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--border-radius-sm);
    transition: all var(--transition-base);
}

.close-modal:hover {
    background: var(--bg-tertiary);
    color: var(--text-primary);
}

.modal-body {
    padding: var(--spacing-xl);
}

.modal-actions {
    display: flex;
    gap: var(--spacing-md);
    margin-top: var(--spacing-lg);
    padding-top: var(--spacing-lg);
    border-top: 1px solid var(--border);
}

/* ========================================
   5. APP LAYOUT & SIDEBAR
   ======================================== */

.app-layout {
    display: flex;
    min-height: 100vh;
    padding-top: 0;
    background: var(--primary);
}

.app-layout.sidebar-collapsed .sidebar {
    width: 60px;
}

.app-layout.sidebar-collapsed .sidebar .sidebar-header h2,
.app-layout.sidebar-collapsed .sidebar .btn-new-project,
.app-layout.sidebar-collapsed .sidebar .search-projects,
.app-layout.sidebar-collapsed .sidebar .projects-list {
    display: none;
}

.app-layout.sidebar-collapsed .main-content {
    margin-left: 60px;
}

/* Sidebar */
.sidebar {
    width: var(--sidebar-width);
    background: rgba(255, 255, 255, 0.98);
    backdrop-filter: blur(15px);
    border-right: 1px solid var(--border-medium);
    box-shadow: var(--shadow-md);
    display: flex;
    flex-direction: column;
    position: fixed;
    top: 0;
    left: 0;
    height: 100vh;
    z-index: var(--z-sticky);
    transition: all var(--transition-slow);
    padding-top: 0;
}

.sidebar-header {
    padding: var(--spacing-lg);
    border-bottom: 1px solid var(--border);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.sidebar-brand {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    text-decoration: none;
    color: var(--text-primary);
    transition: opacity var(--transition-base);
}

.sidebar-brand:hover {
    opacity: 0.8;
}

.sidebar-brand svg {
    color: var(--secondary);
    flex-shrink: 0;
}

.sidebar-brand .brand-name {
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    font-size: var(--text-xl);
    font-weight: var(--font-bold);
}

/* Legacy h2 support (in case it's used elsewhere) */
.sidebar-header h2 {
    color: var(--text-primary);
    font-size: var(--text-xl);
    font-weight: var(--font-bold);
    margin: 0;
}

/* Search Projects */
.search-projects {
    padding: var(--spacing-md) var(--spacing-lg);
    border-bottom: 1px solid var(--border);
}

.search-projects input {
    width: 100%;
    padding: var(--spacing-sm) var(--spacing-md);
    background: var(--bg-tertiary);
    color: var(--text-primary);
    border: 1px solid var(--border);
    border-radius: var(--border-radius-sm);
    font-size: var(--text-sm);
}

.search-projects input:focus {
    outline: none;
    border-color: var(--secondary);
    box-shadow: 0 0 0 3px rgba(34, 197, 94, 0.2);
}

/* Projects List */
.projects-list {
    flex: 1;
    overflow-y: auto;
    padding: var(--spacing-md);
}

.project-item {
    background: var(--bg-primary);
    border: 1px solid var(--border);
    border-radius: var(--border-radius-md);
    padding: var(--spacing-md);
    margin-bottom: var(--spacing-md);
    cursor: pointer;
    transition: all var(--transition-slow);
    box-shadow: var(--shadow-sm);
}

.project-item:hover {
    border-color: var(--secondary);
    box-shadow: 0 4px 12px rgba(34, 197, 94, 0.2);
    transform: translateY(-1px);
}

.project-item.active {
    border-color: var(--secondary);
    background: rgba(34, 197, 94, 0.06);
    box-shadow: 0 2px 8px rgba(34, 197, 94, 0.12);
}

.project-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: var(--spacing-sm);
}

.project-title {
    color: var(--text-primary);
    font-size: var(--text-sm);
    font-weight: var(--font-semibold);
    margin: 0;
    line-height: var(--leading-normal);
    flex: 1;
    padding-right: var(--spacing-sm);
}

.project-meta {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
}

.ai-indicator {
    font-size: 16px;
}

.confidence {
    background: var(--bg-secondary);
    color: var(--text-secondary);
    padding: 3px 8px;
    border-radius: var(--border-radius-full);
    font-size: 11px;
    font-weight: var(--font-semibold);
    border: 1px solid var(--border);
}

.project-preview {
    color: var(--text-secondary);
    font-size: var(--text-xs);
    line-height: var(--leading-normal);
    margin: 0 0 var(--spacing-md) 0;
}

.project-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.project-date {
    color: var(--text-secondary);
    font-size: var(--text-xs);
    font-weight: var(--font-medium);
}

.project-actions {
    display: flex;
    gap: var(--spacing-xs);
}

.btn-project-load,
.btn-project-delete {
    background: none;
    border: none;
    cursor: pointer;
    padding: 4px;
    border-radius: 4px;
    font-size: 14px;
    transition: background var(--transition-slow);
}

.btn-project-load:hover {
    background: rgba(34, 197, 94, 0.1);
    color: var(--secondary);
}

.btn-project-delete:hover {
    background: rgba(220, 53, 69, 0.1);
    color: var(--danger);
}

.no-projects {
    text-align: center;
    color: var(--text-tertiary);
    font-style: italic;
    padding: var(--spacing-xl) var(--spacing-lg);
    font-size: var(--text-sm);
    line-height: var(--leading-normal);
}

/* Sidebar Footer */
.sidebar-footer {
    padding: var(--spacing-lg);
    border-top: 1px solid var(--border);
    margin-top: auto;
}

.btn-toggle-sidebar {
    background: rgba(34, 197, 94, 0.1);
    border: none;
    color: var(--secondary);
    width: 30px;
    height: 30px;
    border-radius: 50%;
    cursor: pointer;
    transition: all var(--transition-slow);
    font-weight: bold;
}

.btn-toggle-sidebar:hover {
    background: rgba(34, 197, 94, 0.2);
    transform: scale(1.05);
}

/* Sidebar Navigation */
.sidebar-nav {
    flex: 1;
}

.nav-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    padding: var(--spacing-md) var(--spacing-lg);
    color: var(--text-secondary);
    text-decoration: none;
    transition: all var(--transition-slow);
    border-radius: 0 25px 25px 0;
    margin-right: var(--spacing-md);
    margin-bottom: var(--spacing-xs);
}

.nav-item:hover {
    background: rgba(34, 197, 94, 0.1);
    color: var(--secondary);
    transform: translateX(5px);
}

.nav-item.active {
    background: rgba(34, 197, 94, 0.15);
    color: var(--secondary);
    font-weight: var(--font-semibold);
    border-left: 3px solid var(--secondary);
}

.nav-item.active .nav-icon {
    font-size: 20px;
}

.nav-icon {
    font-size: 18px;
    width: 24px;
    height: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.nav-icon svg {
    display: block;
}

.nav-label {
    font-size: var(--text-sm);
}

/* Sidebar User Section */
.sidebar-user-section {
    padding: var(--spacing-md) var(--spacing-lg);
    border-bottom: 2px solid var(--secondary);
    margin-bottom: var(--spacing-sm);
    position: relative;
}

.user-header {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    cursor: pointer;
    padding: var(--spacing-sm);
    border-radius: 8px;
    transition: background var(--transition-slow);
}

.user-header:hover {
    background: rgba(255, 255, 255, 0.05);
}

.user-avatar-circle {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: var(--font-bold);
    font-size: 16px;
    flex-shrink: 0;
}

.user-info {
    flex: 1;
    min-width: 0;
}

.user-name-row {
    display: flex;
    align-items: center;
    gap: 4px;
    color: var(--text-primary);
    font-weight: var(--font-semibold);
    font-size: var(--text-sm);
    margin-bottom: 4px;
}

.user-name-row span {
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.dropdown-arrow {
    flex-shrink: 0;
    opacity: 0.7;
    transition: transform var(--transition-slow);
}

.user-header:hover .dropdown-arrow {
    opacity: 1;
}

.user-dropdown-menu.show .dropdown-arrow {
    transform: rotate(180deg);
}

.user-credits {
    width: 60%;
    display: flex;
    flex-direction: row;
    justify-content: space-evenly;
    align-items: center;
    color: var(--secondary-light);
    font-size: 16px;
}

.user-dropdown-menu {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    max-height: 0;
    overflow: hidden;
    opacity: 0;
    transition: all var(--transition-slow);
    margin-top: var(--spacing-xs);
    background: var(--bg-primary);
    border-radius: var(--border-radius-md);
    box-shadow: var(--shadow-md);
    z-index: 10;
}

.user-dropdown-menu.show {
    max-height: 200px;
    opacity: 1;
}

.user-dropdown-menu .dropdown-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm) var(--spacing-md);
    color: var(--text-secondary);
    text-decoration: none;
    border-radius: 6px;
    transition: all var(--transition-slow);
    font-size: var(--text-sm);
}

.user-dropdown-menu .dropdown-item:hover {
    background: rgba(255, 255, 255, 0.05);
    color: var(--text-primary);
    transform: translateX(4px);
}

.user-dropdown-menu .dropdown-item svg {
    flex-shrink: 0;
    opacity: 0.7;
}

.user-dropdown-menu .dropdown-item:hover svg {
    opacity: 1;
}

/* ========================================
   6. MAIN CONTENT AREA
   ======================================== */

.main-content {
    flex: 1;
    margin-left: var(--sidebar-width);
    transition: margin-left var(--transition-slow);
    padding: var(--spacing-xl);
}

.container {
    max-width: var(--max-content-width);
    margin: 0 auto;
    padding: 0;
}

.container-wide {
    max-width: 910px;
    margin: 0 auto;
    padding: 0;
}

/* Content Card Wrapper */
.content-card {
    background: var(--glass-bg);
    backdrop-filter: var(--glass-blur);
    border: 1px solid var(--border);
    border-radius: var(--border-radius-xl);
    padding: var(--spacing-xl);
    box-shadow: var(--shadow-sm);
    position: relative;
    overflow: hidden;
}

.content-card::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -10%;
    width: 150px;
    height: 200%;
    background: var(--overlay-green-03);
    transform: rotate(15deg);
    pointer-events: none;
}

.content-card:hover {
    box-shadow: var(--shadow-md);
    transform: translateY(-1px);
    transition: var(--transition-base);
}

/* ========================================
   7. COMPONENTS (Badges, Cards, File Upload, Scores, Tables)
   ======================================== */

/* Badges & Tags */
.badge {
    display: inline-flex;
    align-items: center;
    padding: 4px 12px;
    border-radius: var(--border-radius-full);
    font-size: var(--text-xs);
    font-weight: var(--font-semibold);
    text-transform: uppercase;
}

.badge.primary,
.badge-success {
    background: var(--overlay-green-05);
    color: var(--secondary);
}

.badge.warning,
.badge-warning {
    background: rgba(253, 224, 71, 0.2);
    color: #ca8a04;
}

.badge.danger,
.badge-danger {
    background: rgba(239, 68, 68, 0.1);
    color: var(--danger);
}

.plan-badge {
    display: inline-block;
    padding: 4px 8px;
    border-radius: var(--border-radius-full);
    font-size: var(--text-xs);
    font-weight: var(--font-semibold);
    text-transform: uppercase;
}

.plan-free {
    background: var(--bg-secondary);
    color: var(--text-secondary);
}

.plan-starter {
    background: rgba(253, 224, 71, 0.2);
    color: #ca8a04;
}

.plan-professional {
    background: rgba(34, 197, 94, 0.2);
    color: var(--secondary);
}

/* Cards */
.card {
    background: rgba(255, 255, 255, 0.98);
    backdrop-filter: blur(15px);
    border: 1px solid var(--border-medium);
    border-radius: var(--border-radius-xl);
    padding: var(--spacing-xl);
    box-shadow: var(--shadow-lg);
    transition: all var(--transition-base);
    position: relative;
    overflow: hidden;
}

.card::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -10%;
    width: 100px;
    height: 200%;
    background: rgba(34, 197, 94, 0.02);
    transform: rotate(15deg);
    pointer-events: none;
}

.card:hover {
    box-shadow: var(--shadow-xl);
    transform: translateY(-2px);
}

.card-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-lg);
    padding-bottom: var(--spacing-md);
    border-bottom: 1px solid var(--border);
}

.card-title {
    font-size: var(--text-xl);
    font-weight: var(--font-semibold);
    color: var(--text-primary);
    margin: 0;
}

.card-body {
    padding: var(--spacing-md) 0;
}

.card-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-top: var(--spacing-lg);
    padding-top: var(--spacing-md);
    border-top: 1px solid var(--border);
}

/* File Upload Components */
.file-upload-area {
    border: 2px dashed var(--border-medium);
    border-radius: var(--border-radius-lg);
    padding: var(--padding-card) var(--padding-section);
    text-align: center;
    background: var(--bg-secondary);
    min-height: 180px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: var(--transition-base);
}

.file-upload-area.hidden {
    display: none;
}

.file-upload-area:hover,
.file-upload-area.dragover {
    border-color: var(--secondary);
    background: white;
}

.upload-icon {
    width: 48px;
    height: 48px;
    flex-shrink: 0;
    color: var(--text-secondary);
    opacity: 0.8;
    margin-bottom: var(--spacing-md);
    transition: all var(--transition-slow);
}

.file-upload-area:hover .upload-icon {
    color: var(--secondary);
    transform: scale(1.1);
}

.upload-text {
    text-align: center;
}

.upload-main {
    font-size: 20px;
    color: var(--text-primary);
    margin: 0 0 var(--spacing-md) 0;
    font-weight: var(--font-semibold);
}

.upload-sub,
.upload-hint {
    font-size: var(--text-sm);
    color: var(--text-secondary);
    margin: 0;
}

.upload-button {
    background: none;
    border: none;
    color: var(--secondary);
    text-decoration: underline;
    cursor: pointer;
    font-size: inherit;
    font-weight: var(--font-semibold);
    padding: 0;
    transition: color var(--transition-base);
}

.upload-button:hover {
    color: var(--secondary-light);
}

/* Image Preview */
.image-preview {
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: var(--border-radius-lg);
    padding: var(--spacing-lg);
}

.image-preview.hidden {
    display: none;
}

.preview-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-md);
}

.preview-header h3 {
    font-size: var(--text-base);
    font-weight: var(--font-semibold);
    color: var(--text-primary);
    margin: 0;
}

.btn-change-image {
    background: rgba(239, 68, 68, 0.1);
    border: 1px solid rgba(239, 68, 68, 0.2);
    color: var(--danger);
    padding: var(--spacing-xs) var(--spacing-md);
    border-radius: var(--border-radius-sm);
    font-size: var(--text-xs);
    font-weight: var(--font-medium);
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: var(--gap-xs);
    transition: var(--transition-base);
}

.btn-change-image:hover {
    background: rgba(239, 68, 68, 0.15);
}

.preview-img {
    width: 100%;
    max-height: 400px;
    object-fit: contain;
    border-radius: var(--border-radius-md);
    background: white;
    border: 1px solid var(--border);
}

.image-info {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--gap-sm);
    margin-top: var(--spacing-md);
    font-size: var(--text-xs);
    color: var(--text-secondary);
}

.image-info .separator {
    color: var(--border-dark);
}

.image-name {
    font-weight: var(--font-medium);
    color: var(--text-primary);
}

.image-size {
    color: var(--text-secondary);
}

/* Score Indicators */
.score-badge {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 28px;
    height: 28px;
    border-radius: 50%;
    font-weight: var(--font-semibold);
    font-size: var(--text-xs);
    color: white;
}

.score-badge.high {
    background: linear-gradient(135deg, #ef4444 0%, #dc2626 100%);
}

.score-badge.medium {
    background: linear-gradient(135deg, #f97316 0%, #ea580c 100%);
}

.score-badge.low {
    background: linear-gradient(135deg, #10b981 0%, #059669 100%);
}

.score-circle {
    width: 90px;
    height: 90px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 28px;
    font-weight: bold;
    color: white;
    flex-shrink: 0;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
}

.score-circle.ai-high {
    background: linear-gradient(135deg, var(--danger) 0%, #b91c1c 100%);
    box-shadow: var(--shadow-danger);
}

.score-circle.ambiguous {
    background: linear-gradient(135deg, var(--warning) 0%, #facc15 100%);
    box-shadow: var(--shadow-warning);
}

.score-circle.mixed {
    background: linear-gradient(135deg, var(--secondary) 0%, var(--secondary-dark) 100%);
    box-shadow: var(--shadow-primary);
}

.score-circle.human-low,
.score-circle.human-high {
    background: var(--gradient-secondary);
    box-shadow: var(--shadow-primary);
}

.score-circle.loading {
    background: var(--gradient-secondary);
    animation: pulse 2s ease-in-out infinite;
}

/* Progress Bars */
.progress-bar {
    width: 100%;
    height: 8px;
    background: var(--border);
    border-radius: 4px;
    overflow: hidden;
    margin-bottom: var(--spacing-sm);
}

.progress-fill {
    height: 100%;
    background: var(--gradient-secondary);
    width: 0%;
    transition: width var(--transition-slow);
    border-radius: 4px;
}

/* Tables */
.table-container {
    overflow-x: auto;
    border-radius: var(--border-radius-md);
    border: 1px solid var(--border);
}

.data-table {
    width: 100%;
    border-collapse: collapse;
    background: var(--bg-primary);
}

.data-table th {
    background: var(--bg-secondary);
    padding: var(--spacing-md) var(--spacing-lg);
    text-align: left;
    font-weight: var(--font-semibold);
    color: var(--text-secondary);
    border-bottom: 2px solid var(--border);
    font-size: var(--text-xs);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.data-table td {
    padding: var(--spacing-md) var(--spacing-lg);
    border-bottom: 1px solid var(--border);
    color: var(--text-primary);
}

.data-table tbody tr {
    transition: background var(--transition-base);
}

.data-table tbody tr:hover {
    background: var(--bg-secondary);
}

.data-table tbody tr:last-child td {
    border-bottom: none;
}

/* Empty States */
.empty-state {
    text-align: center;
    padding: var(--spacing-5xl) var(--spacing-xl);
    color: var(--text-secondary);
}

.empty-state-icon {
    font-size: 48px;
    margin-bottom: var(--spacing-lg);
    opacity: 0.5;
}

.empty-state h3 {
    font-size: var(--text-xl);
    font-weight: var(--font-semibold);
    color: var(--text-primary);
    margin: 0 0 var(--spacing-sm) 0;
}

.empty-state p {
    margin: 0 0 var(--gap-xl) 0;
    color: var(--text-secondary);
}

.loading-state {
    text-align: center;
    padding: var(--spacing-3xl) var(--spacing-xl);
    color: var(--text-secondary);
}

.loading-spinner {
    width: 40px;
    height: 40px;
    border: 4px solid var(--border);
    border-top-color: var(--secondary);
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin: 0 auto var(--spacing-lg);
}

/* ========================================
   8. DETECTION PAGES (Analysis Header, Forms, Results)
   ======================================== */

.analysis-container {
    max-width: var(--container-2xl);
    margin: 0 auto;
    padding: 0;
}

.content-wrapper {
    display: flex;
    gap: var(--gap-xl);
    align-items: flex-start;
    justify-content: center;
    transition: all 0.4s ease;
    max-width: var(--container-2xl);
    margin: 0 auto;
}

/* Analysis Header - Gradient Style */
.analysis-header {
    background: var(--gradient-primary);
    border-radius: var(--border-radius-xl);
    padding: var(--padding-card);
    margin: 0 auto var(--gap-xl) auto;
    max-width: var(--container-2xl);
    color: white;
    position: relative;
    overflow: hidden;
}

.analysis-header::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -10%;
    width: 200px;
    height: 200%;
    background: var(--overlay-white-10);
    transform: rotate(15deg);
    pointer-events: none;
}

.analysis-header h1 {
    font-size: var(--text-3xl);
    font-weight: var(--font-bold);
    color: white;
    margin: 0 0 var(--spacing-sm) 0;
    position: relative;
    z-index: 2;
}

.analysis-header p {
    font-size: var(--text-sm);
    color: rgba(255, 255, 255, 0.9);
    margin: 0;
    position: relative;
    z-index: 2;
}

/* Form Container */
.form-container {
    background: var(--glass-bg);
    backdrop-filter: var(--glass-blur);
    border: 1px solid var(--border);
    border-radius: var(--border-radius-xl);
    padding: var(--padding-card);
    box-shadow: var(--shadow-sm);
    position: relative;
    flex-shrink: 0;
    width: var(--container-xl);
    max-width: 100%;
    transition: all 0.4s ease;
    overflow: hidden;
}

.form-container::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -10%;
    width: 150px;
    height: 200%;
    background: var(--overlay-green-03);
    transform: rotate(15deg);
    pointer-events: none;
}

/* Content Container */
.content-container {
    position: relative;
    min-height: 300px;
}

.content-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-top: var(--gap-md);
    padding-top: var(--gap-md);
    border-top: 1px solid var(--border);
}

.char-count {
    font-size: var(--text-xs);
    color: var(--text-secondary);
}

.minimum-words {
    background: var(--overlay-green-05);
    border: 1px solid rgba(34, 197, 94, 0.3);
    border-radius: var(--border-radius-md);
    padding: var(--spacing-md);
    display: flex;
    align-items: center;
    gap: var(--gap-sm);
    margin-top: var(--gap-md);
}

.minimum-words .icon {
    color: var(--secondary);
    flex-shrink: 0;
}

.minimum-words span {
    font-size: var(--text-xs);
    color: var(--text-primary);
}

/* Analysis Actions */
.analysis-actions {
    display: flex;
    gap: var(--gap-md);
    margin: var(--gap-xs);
    padding: var(--gap-xs);
    position: relative;
    z-index: 2;
}

/* Detection Options */
.detection-options {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--gap-md);
}

.detection-option {
    border: 2px solid var(--border);
    border-radius: var(--border-radius-lg);
    padding: var(--spacing-lg);
    cursor: pointer;
    transition: var(--transition-base);
    position: relative;
    background: white;
}

.detection-option:hover {
    border-color: var(--border-medium);
}

.detection-option.selected {
    border-color: var(--secondary);
    background: var(--overlay-green-05);
}

.detection-option input[type="radio"] {
    position: absolute;
    opacity: 0;
    pointer-events: none;
}

.detection-option-header {
    display: flex;
    align-items: center;
    gap: var(--gap-md);
    margin-bottom: var(--spacing-sm);
}

.detection-icon {
    width: 32px;
    height: 32px;
    border-radius: var(--border-radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 16px;
}

.detection-icon.ai {
    background: var(--overlay-green-05);
    color: var(--secondary);
}

.detection-icon.plagiarism {
    background: rgba(253, 224, 71, 0.1);
    color: var(--warning);
}

.detection-title {
    font-weight: var(--font-semibold);
    color: var(--text-primary);
    font-size: var(--text-sm);
}

.detection-description {
    font-size: var(--text-xs);
    color: var(--text-secondary);
    line-height: 1.4;
}

/* Results Modal */
.results-modal {
    background: var(--glass-bg);
    backdrop-filter: var(--glass-blur);
    border: 1px solid var(--border);
    border-radius: var(--border-radius-xl);
    padding: var(--padding-section);
    box-shadow: var(--shadow-sm);
    width: 450px;
    flex-shrink: 0;
    transition: all 0.4s ease;
    transform: translateX(0);
    opacity: 1;
    position: relative;
    overflow: hidden;
}

.results-modal::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -10%;
    width: 100px;
    height: 200%;
    background: var(--overlay-green-03);
    transform: rotate(15deg);
    pointer-events: none;
}

.results-modal.hidden {
    transform: translateX(100px);
    opacity: 0;
    width: 0;
    padding: 0;
    border: none;
    overflow: hidden;
}

.result-header {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-xl);
    margin-bottom: var(--gap-xl);
    text-align: center;
    position: relative;
    z-index: 2;
}

.result-score {
    width: 90px;
    height: 90px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 28px;
    font-weight: bold;
    color: white;
    flex-shrink: 0;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
}

.result-score.ai-high {
    background: linear-gradient(135deg, var(--danger) 0%, #b91c1c 100%);
    box-shadow: var(--shadow-danger);
}

.result-score.ambiguous {
    background: linear-gradient(135deg, var(--warning) 0%, #facc15 100%);
    box-shadow: var(--shadow-warning);
}

.result-score.mixed {
    background: linear-gradient(135deg, var(--secondary) 0%, var(--secondary-dark) 100%);
    box-shadow: var(--shadow-primary);
}

.result-score.human-low,
.result-score.human-high {
    background: var(--gradient-secondary);
    box-shadow: var(--shadow-primary);
}

.result-score.loading {
    background: var(--gradient-secondary);
    animation: pulse 2s ease-in-out infinite;
}

.result-info {
    width: 100%;
}

.result-info h3 {
    margin: 0 0 var(--gap-md) 0;
    font-size: var(--text-xl);
    font-weight: var(--font-semibold);
    color: var(--text-primary);
}

.result-info p {
    margin: 0;
    color: var(--text-secondary);
    font-size: var(--text-sm);
    line-height: var(--leading-relaxed);
    text-align: left;
    background: var(--bg-secondary);
    padding: var(--spacing-lg);
    border-radius: var(--border-radius-lg);
    border: 1px solid var(--border);
}

.result-details {
    display: flex;
    flex-direction: row;
    gap: var(--gap-md);
    margin-bottom: var(--spacing-lg);
    position: relative;
    z-index: 2;
}

.result-detail {
    background: var(--bg-secondary);
    padding: var(--spacing-md) var(--spacing-lg);
    border-radius: var(--border-radius-lg);
    border: 1px solid var(--border);
    display: flex;
    flex-direction: column;
    gap: var(--gap-sm);
    flex: 1;
    text-align: center;
}

.result-detail-label {
    font-size: var(--text-xs);
    color: var(--text-secondary);
    font-weight: var(--font-medium);
}

.result-detail-value {
    font-size: var(--text-sm);
    font-weight: var(--font-semibold);
    color: var(--text-primary);
}

.result-actions {
    display: flex;
    gap: var(--gap-md);
    margin-top: var(--gap-xl);
    padding-top: var(--gap-xl);
    border-top: 1px solid var(--border);
}

/* Document Info Section */
.document-info {
    background: var(--bg-secondary);
    border: 1px solid var(--secondary);
    border-radius: var(--border-radius-lg);
    padding: var(--spacing-lg);
    margin-bottom: var(--spacing-lg);
    position: relative;
    z-index: 2;
}

.document-info.hidden {
    display: none;
}

.document-info-header {
    display: flex;
    align-items: center;
    gap: var(--gap-sm);
    margin-bottom: var(--gap-md);
    color: var(--secondary);
}

.document-info-header h4 {
    margin: 0;
    font-size: var(--text-sm);
    font-weight: var(--font-semibold);
}

.document-info-content {
    display: flex;
    flex-direction: column;
    gap: var(--gap-md);
}

.document-info-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-sm) var(--spacing-md);
    background: white;
    border-radius: var(--border-radius-md);
    border: 1px solid var(--border);
}

.document-info-label {
    font-size: var(--text-xs);
    color: var(--text-secondary);
    font-weight: var(--font-medium);
}

.document-info-value {
    font-size: var(--text-xs);
    color: var(--secondary);
    font-weight: var(--font-semibold);
    word-break: break-word;
    text-align: right;
    max-width: 60%;
}

/* Document Viewer Mode */
.document-viewer-mode {
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: var(--border-radius-md);
    padding: var(--spacing-lg);
}

.document-viewer-mode.hidden {
    display: none;
}

/* ========================================
   9. SHARED PAGE PATTERNS
   ======================================== */

/* Page Headers - Gradient Style */
.page-header-gradient {
    background: var(--gradient-primary);
    border-radius: var(--border-radius-xl);
    padding: var(--padding-card);
    margin-bottom: var(--gap-xl);
    color: white;
    position: relative;
    overflow: hidden;
}

.page-header-gradient::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -10%;
    width: 200px;
    height: 200%;
    background: var(--overlay-white-10);
    transform: rotate(15deg);
    pointer-events: none;
}

.page-header-gradient h1 {
    font-size: var(--text-3xl);
    font-weight: var(--font-bold);
    color: white;
    margin: 0 0 var(--spacing-sm) 0;
    position: relative;
    z-index: 2;
}

.page-header-gradient p {
    font-size: var(--text-sm);
    color: rgba(255, 255, 255, 0.9);
    margin: 0;
    position: relative;
    z-index: 2;
}

/* Info Boxes */
.info-box {
    background: var(--overlay-green-05);
    border: 1px solid rgba(34, 197, 94, 0.3);
    border-radius: var(--border-radius-md);
    padding: var(--spacing-md);
    display: flex;
    align-items: center;
    gap: var(--gap-sm);
    margin-top: var(--gap-md);
}

.info-box .icon {
    color: var(--secondary);
    flex-shrink: 0;
}

.info-box span {
    font-size: var(--text-xs);
    color: var(--text-primary);
}

.info-box.warning {
    background: rgba(253, 224, 71, 0.1);
    border-color: rgba(253, 224, 71, 0.3);
}

.info-box.warning .icon {
    color: var(--warning);
}

.info-box.danger {
    background: rgba(239, 68, 68, 0.1);
    border-color: rgba(239, 68, 68, 0.3);
}

.info-box.danger .icon {
    color: var(--danger);
}

/* Tab Navigation */
.tab-navigation {
    display: flex;
    border-bottom: 1px solid var(--border);
    margin-bottom: var(--gap-xl);
    gap: 0;
}

.tab-button {
    background: none;
    border: none;
    padding: var(--spacing-lg) var(--gap-xl);
    cursor: pointer;
    font-size: var(--text-sm);
    font-weight: var(--font-medium);
    color: var(--text-secondary);
    border-bottom: 2px solid transparent;
    transition: var(--transition-base);
    display: flex;
    align-items: center;
    gap: var(--gap-sm);
}

.tab-button.active {
    color: var(--secondary);
    border-bottom-color: var(--secondary);
    background: var(--overlay-green-05);
}

.tab-button:hover:not(.active) {
    color: var(--text-primary);
    background: rgba(0, 0, 0, 0.02);
}

.tab-count {
    background: var(--secondary);
    color: white;
    padding: 2px 8px;
    border-radius: var(--border-radius-lg);
    font-size: var(--text-xs);
    font-weight: var(--font-semibold);
    min-width: 20px;
    text-align: center;
}

.tab-button:not(.active) .tab-count {
    background: var(--neutral-400);
}

/* Back Navigation */
.back-navigation {
    padding: var(--spacing-xl) var(--gap-xl) 0;
    margin-bottom: var(--spacing-xl);
}

.back-link {
    display: inline-flex;
    align-items: center;
    gap: var(--gap-sm);
    color: var(--secondary);
    text-decoration: none;
    font-size: var(--text-sm);
    font-weight: var(--font-medium);
    transition: var(--transition-base);
}

.back-link:hover {
    color: var(--secondary-light);
    transform: translateX(-2px);
}

/* Result Panel */
.result-panel {
    background: var(--glass-bg);
    backdrop-filter: var(--glass-blur);
    border: 1px solid var(--border);
    border-radius: var(--border-radius-xl);
    padding: var(--padding-section);
    box-shadow: var(--shadow-sm);
    position: relative;
    overflow: hidden;
}

.result-panel::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -10%;
    width: 100px;
    height: 200%;
    background: var(--overlay-green-03);
    transform: rotate(15deg);
    pointer-events: none;
}

/* ========================================
   10. UTILITIES & ANIMATIONS
   ======================================== */

.hidden {
    display: none !important;
}

.text-center {
    text-align: center;
}

.text-left {
    text-align: left;
}

.text-right {
    text-align: right;
}

.flex-between {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: var(--gap-md);
}

.flex-center {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--gap-md);
}

.flex-gap {
    display: flex;
    gap: var(--gap-md);
}

.grid-2-col {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--gap-md);
}

.grid-3-col {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--gap-md);
}

.visually-hidden {
    display: none;
}

/* Animations */
@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

@keyframes pulse {
    0%, 100% {
        opacity: 1;
    }
    50% {
        opacity: 0.7;
    }
}

@keyframes fadeIn {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}

@keyframes fadeInOut {
    0%, 100% {
        opacity: 1;
    }
    50% {
        opacity: 0.8;
    }
}

.spinner {
    width: 36px;
    height: 36px;
    border: 4px solid rgba(255, 255, 255, 0.3);
    border-top-color: white;
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin: 0 auto;
}

.spinner-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.7);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 9999;
    transition: opacity 0.3s ease;
}

.spinner-overlay.hidden {
    opacity: 0;
    pointer-events: none;
}

.spinner-container {
    text-align: center;
    color: white;
}

.spinner-text {
    margin-top: 16px;
    font-size: 16px;
    color: white;
    font-weight: 500;
}

/* Alerts & Messages */
.error-message {
    background: #fef2f2;
    border: 1px solid #fecaca;
    color: var(--danger);
    padding: 12px 16px;
    border-radius: var(--border-radius-md);
    font-size: var(--text-sm);
    margin-top: var(--spacing-md);
}

.error-message.hidden {
    display: none;
}

.success-message {
    background: #dcfce7;
    border: 1px solid #bbf7d0;
    color: #166534;
    padding: 12px 16px;
    border-radius: var(--border-radius-md);
    font-size: var(--text-sm);
    margin-top: var(--spacing-md);
}

.success-message.hidden {
    display: none;
}

/* Scrollbar Styles */
*::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

*::-webkit-scrollbar-track {
    background: var(--bg-secondary);
    border-radius: 4px;
}

*::-webkit-scrollbar-thumb {
    background: var(--border-medium);
    border-radius: 4px;
}

*::-webkit-scrollbar-thumb:hover {
    background: var(--text-tertiary);
}

/* ========================================
   10. ACCOUNT PAGE STYLES
   ======================================== */

/* Account Header */
.account-header {
    margin-bottom: var(--spacing-xl);
    padding-bottom: var(--spacing-lg);
    border-bottom: 2px solid var(--border);
}

.account-header h1 {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    margin: 0 0 var(--spacing-sm) 0;
    font-size: var(--text-3xl);
    font-weight: var(--font-bold);
    color: var(--text-primary);
}

.account-header p {
    margin: 0;
    color: var(--text-secondary);
    font-size: var(--text-base);
}

/* Account Tabs */
.account-tabs {
    display: flex;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-xl);
    border-bottom: 2px solid var(--border);
    overflow-x: auto;
}

.account-tab {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-md) var(--spacing-lg);
    background: none;
    border: none;
    border-bottom: 3px solid transparent;
    color: var(--text-secondary);
    font-size: var(--text-sm);
    font-weight: var(--font-medium);
    cursor: pointer;
    transition: all var(--transition-base);
    white-space: nowrap;
    margin-bottom: -2px;
}

.account-tab:hover {
    color: var(--text-primary);
    background: var(--bg-secondary);
}

.account-tab.active {
    color: var(--secondary);
    border-bottom-color: var(--secondary);
    background: var(--overlay-green-05);
}

.account-tab svg {
    flex-shrink: 0;
}

/* Account Content */
.account-content {
    background: var(--glass-bg);
    backdrop-filter: var(--glass-blur);
    border: 1px solid var(--border);
    border-radius: var(--border-radius-xl);
    padding: var(--padding-card);
    box-shadow: var(--shadow-sm);
}

.tab-content {
    display: none;
}

.tab-content.active {
    display: block;
}

.tab-title {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    margin: 0 0 var(--spacing-xl) 0;
    font-size: var(--text-2xl);
    font-weight: var(--font-semibold);
    color: var(--text-primary);
}

/* Form Sections */
.form-section {
    margin-bottom: var(--spacing-xl);
    padding-bottom: var(--spacing-xl);
    border-bottom: 1px solid var(--border);
}

.form-section:last-child {
    border-bottom: none;
    margin-bottom: 0;
    padding-bottom: 0;
}

.form-section h3 {
    margin: 0 0 var(--spacing-md) 0;
    font-size: var(--text-lg);
    font-weight: var(--font-semibold);
    color: var(--text-primary);
}

.form-section p {
    margin: 0 0 var(--spacing-lg) 0;
    color: var(--text-secondary);
    font-size: var(--text-sm);
}

.form-actions {
    display: flex;
    gap: var(--spacing-md);
    margin-top: var(--spacing-lg);
}

/* Plan Display */
.plan-display {
    margin-top: var(--spacing-md);
}

.plan-badge {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-md) var(--spacing-lg);
    background: var(--overlay-green-05);
    border: 2px solid var(--secondary);
    border-radius: var(--border-radius-lg);
    color: var(--secondary);
    font-size: var(--text-base);
    font-weight: var(--font-semibold);
}

.plan-badge svg {
    flex-shrink: 0;
}

/* Credits Grid */
.credits-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-xl);
    margin-top: var(--spacing-lg);
}

.credit-card {
    border-radius: var(--border-radius-xl);
    padding: var(--spacing-lg);
    color: white;
    position: relative;
    overflow: hidden;
}

.credit-card.primary {
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
}

.credit-card.success {
    background: linear-gradient(135deg, var(--secondary) 0%, var(--secondary-dark) 100%);
}

.credit-card.info {
    background: linear-gradient(135deg, #3b82f6 0%, #2563eb 100%);
}

.credit-card-header {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-md);
}

.credit-card-header h4 {
    margin: 0;
    font-size: var(--text-sm);
    opacity: 0.9;
    font-weight: var(--font-medium);
}

.credit-card-header svg {
    flex-shrink: 0;
}

.credit-card-value {
    font-size: var(--text-4xl);
    font-weight: var(--font-bold);
    margin: var(--spacing-sm) 0;
}

.credit-card-description {
    margin: var(--spacing-sm) 0 0 0;
    font-size: var(--text-xs);
    opacity: 0.8;
}

/* Alert Messages */
.alert {
    padding: var(--spacing-md);
    border-radius: var(--border-radius-md);
    margin-bottom: var(--spacing-lg);
    display: none;
}

.alert.success {
    background: #dcfce7;
    border: 1px solid #bbf7d0;
    color: #166534;
}

.alert.error {
    background: #fef2f2;
    border: 1px solid #fecaca;
    color: var(--danger);
}

.alert.show {
    display: block;
}

/* Danger Section */
.danger-section {
    padding: var(--spacing-lg);
    background: rgba(239, 68, 68, 0.05);
    border: 2px solid rgba(239, 68, 68, 0.2);
    border-radius: var(--border-radius-lg);
}

.danger-section h3 {
    color: var(--danger);
    margin: 0 0 var(--spacing-md) 0;
}

.danger-section p {
    margin: 0 0 var(--spacing-lg) 0;
    color: var(--text-primary);
}

.btn-danger {
    background: var(--danger);
    color: white;
    border: none;
    padding: var(--button-padding-y) var(--button-padding-x);
    border-radius: var(--border-radius-md);
    font-size: var(--text-sm);
    font-weight: var(--font-medium);
    cursor: pointer;
    transition: all var(--transition-base);
}

.btn-danger:hover {
    background: #b91c1c;
    transform: translateY(-1px);
    box-shadow: var(--shadow-danger);
}

/* Icon Color Classes */
.icon-primary {
    color: var(--secondary);
}

.icon-danger {
    color: var(--danger);
}

/* ========================================
   11. RESPONSIVE STYLES
   ======================================== */

@media (max-width: 768px) {
    /* Typography */
    h1 {
        font-size: var(--text-2xl);
    }

    h2 {
        font-size: var(--text-xl);
    }

    h3 {
        font-size: var(--text-lg);
    }

    /* Layout */
    .main-content {
        margin-left: 0;
        width: 100%;
    }

    .sidebar {
        transform: translateX(-100%);
    }

    .sidebar.mobile-open {
        transform: translateX(0);
    }

    .container {
        padding: var(--spacing-md);
    }

    /* Modals */
    .modal-content {
        width: 95%;
        margin: 20px;
    }

    .modal-body {
        padding: var(--spacing-lg);
    }

    .modal-actions {
        flex-direction: column;
    }

    /* Buttons */
    .btn-primary,
    .btn-secondary {
        width: 100%;
        justify-content: center;
    }

    /* Detection Pages */
    .analysis-container {
        padding: var(--gap-md);
    }

    .content-wrapper {
        flex-direction: column;
    }

    .form-container {
        padding: var(--padding-section);
        max-width: 100%;
    }

    .results-modal {
        width: 100%;
        max-width: 100%;
        padding: var(--padding-section);
    }

    .detection-options {
        grid-template-columns: 1fr;
    }

    .project-selector {
        flex-direction: column;
        align-items: stretch;
    }

    .analysis-actions {
        flex-direction: column;
    }

    .result-details {
        flex-direction: column;
    }

    .analysis-header,
    .page-header-gradient {
        padding: var(--padding-section);
    }

    .back-btn,
    .new-analysis-btn {
        position: static;
        margin-bottom: var(--gap-md);
        align-self: flex-start;
    }

    /* Components */
    .card {
        padding: var(--spacing-lg);
    }

    .file-upload-area {
        padding: var(--spacing-xl);
        min-height: 180px;
    }

    .score-circle {
        width: 60px;
        height: 60px;
        font-size: 16px;
    }

    .data-table {
        font-size: var(--text-sm);
    }

    .data-table th,
    .data-table td {
        padding: var(--spacing-sm) var(--spacing-md);
    }

    .grid-2-col,
    .grid-3-col {
        grid-template-columns: 1fr;
    }

    .tab-navigation {
        overflow-x: auto;
        white-space: nowrap;
    }
}

/* Mobile Navigation */
.mobile-nav-toggle {
    display: none;
    position: fixed;
    top: 20px;
    left: 20px;
    z-index: 1001;
    background: var(--secondary);
    color: white;
    border: none;
    border-radius: var(--border-radius-md);
    width: 44px;
    height: 44px;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    box-shadow: 0 4px 12px rgba(34, 197, 94, 0.4);
}

.mobile-overlay {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
    z-index: var(--z-overlay);
    opacity: 0;
    transition: opacity var(--transition-slow);
}

.mobile-overlay.show {
    opacity: 1;
}

@media (max-width: 768px) {
    .mobile-nav-toggle {
        display: flex;
    }

    .mobile-overlay.show {
        display: block;
    }
}

@media (min-width: 769px) {
    .mobile-nav-toggle {
        display: none;
    }

    .mobile-overlay {
        display: none;
    }
}