/**
 * Shared Pages Styles
 * Reusable patterns for all pages - uses variables.css
 * Import this in HTML: <link rel="stylesheet" href="shared-pages.css">
 */

/* ========================================
   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;
}

/* ========================================
   CONTENT CARDS/CONTAINERS
   ======================================== */

.content-card {
    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;
    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);
}

/* ========================================
   BUTTONS - REUSABLE PATTERNS
   ======================================== */

/* Primary Button */
.btn-primary {
    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: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--gap-sm);
    transition: var(--transition-base);
    text-decoration: none;
}

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

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

/* Secondary Button */
.btn-secondary {
    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: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--gap-sm);
    transition: var(--transition-base);
}

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

/* Button on Gradient Background */
.btn-on-gradient {
    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: inline-flex;
    align-items: center;
    gap: var(--gap-sm);
    transition: var(--transition-base);
    backdrop-filter: var(--glass-blur);
}

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

/* Small Accent Button */
.btn-accent-small {
    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: inline-flex;
    align-items: center;
    gap: var(--gap-xs);
    transition: var(--transition-base);
}

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

/* ========================================
   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);
}

/* Text Inputs */
.input-text,
.input-url,
.input-email {
    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 {
    outline: none;
    border-color: var(--secondary);
    box-shadow: 0 0 0 3px rgba(34, 197, 94, 0.2);
}

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

/* Textarea */
.textarea {
    width: 100%;
    min-height: 120px;
    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 {
    outline: none;
    border-color: var(--secondary);
    box-shadow: 0 0 0 3px rgba(34, 197, 94, 0.2);
}

/* Select Dropdown */
.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 {
    outline: none;
    border-color: var(--secondary);
    box-shadow: 0 0 0 3px rgba(34, 197, 94, 0.2);
}

/* ========================================
   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);
}

/* ========================================
   SCORE CIRCLES - REUSABLE
   ======================================== */

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

.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;
}

/* ========================================
   BADGES
   ======================================== */

.badge {
    display: inline-flex;
    align-items: center;
    background: var(--overlay-white-30);
    padding: 2px 8px;
    border-radius: var(--border-radius-lg);
    font-size: var(--text-xs);
    font-weight: var(--font-semibold);
    text-transform: uppercase;
}

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

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

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

/* ========================================
   MODAL/RESULT PANELS
   ======================================== */

.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;
}

.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-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);
}

/* ========================================
   LOADING STATES
   ======================================== */

.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);
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

/* ========================================
   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);
}

/* ========================================
   UTILITY CLASSES
   ======================================== */

.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);
}

/* ========================================
   RESPONSIVE
   ======================================== */

@media (max-width: 768px) {
    .page-header-gradient {
        padding: var(--padding-section);
    }

    .content-card {
        padding: var(--padding-section);
    }

    .result-panel {
        padding: var(--padding-section);
    }

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

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

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