/* ===== Shared Design Tokens ===== */
:root {
    --primary: #e85d4a;
    --primary-hover: #d14a38;
    --danger: #e85d4a;
    --danger-hover: #d14a38;
    --warning: #e8b84a;
    --radius: 8px;
    --radius-sm: 4px;
    --max-width: 1200px;
    --transition-theme: 0.3s ease;
}

/* ===== Dark Theme ===== */
[data-theme="dark"] {
    --primary-light: rgba(232, 93, 74, 0.12);
    --teal: #4ecdc4;
    --teal-hover: #3dbdb4;
    --teal-light: rgba(78, 205, 196, 0.12);
    --success: #4ecdc4;
    --success-light: rgba(78, 205, 196, 0.15);
    --warning-light: rgba(232, 184, 74, 0.15);
    --bg-body: #1a1a2e;
    --bg-card: #222240;
    --bg-card-hover: #2a2a4a;
    --bg-input: #2d2d50;
    --bg-elevated: #2a2a4a;
    --border: #3a3a5c;
    --border-light: #32324e;
    --text-primary: #f5f0e8;
    --text-secondary: #b8b4ac;
    --text-muted: #8a8699;
    --text-heading: #ffffff;
    --shadow: 0 2px 8px rgba(0,0,0,0.3), 0 1px 3px rgba(0,0,0,0.2);
    --shadow-md: 0 4px 12px rgba(0,0,0,0.35), 0 2px 4px rgba(0,0,0,0.25);
    --shadow-lg: 0 10px 25px rgba(0,0,0,0.4), 0 4px 10px rgba(0,0,0,0.3);
    --modal-overlay: rgba(10, 10, 20, 0.75);
    --focus-ring: rgba(232, 93, 74, 0.15);
}

/* ===== Light Theme ===== */
[data-theme="light"] {
    --primary-light: rgba(232, 93, 74, 0.08);
    --teal: #3db8b0;
    --teal-hover: #339e97;
    --teal-light: rgba(61, 184, 176, 0.10);
    --success: #3db8b0;
    --success-light: rgba(61, 184, 176, 0.12);
    --warning-light: rgba(232, 184, 74, 0.12);
    --bg-body: #f5f0e8;
    --bg-card: #ffffff;
    --bg-card-hover: #faf8f5;
    --bg-input: #faf8f5;
    --bg-elevated: #f0ece4;
    --border: #e0dbd2;
    --border-light: #e8e4dc;
    --text-primary: #2d2d3d;
    --text-secondary: #5a5868;
    --text-muted: #8a8699;
    --text-heading: #1a1a2e;
    --shadow: 0 2px 8px rgba(0,0,0,0.08), 0 1px 3px rgba(0,0,0,0.05);
    --shadow-md: 0 4px 12px rgba(0,0,0,0.10), 0 2px 4px rgba(0,0,0,0.06);
    --shadow-lg: 0 10px 25px rgba(0,0,0,0.12), 0 4px 10px rgba(0,0,0,0.08);
    --modal-overlay: rgba(0, 0, 0, 0.4);
    --focus-ring: rgba(232, 93, 74, 0.20);
}

/* ===== Theme Transition ===== */
body,
.app-header,
.card,
.stat-card,
.modal,
.btn-secondary,
.tab,
.form-group input,
.form-group select,
.form-group textarea,
.toolbar .search-input,
.toolbar select,
.badge,
.alert,
.pagination button,
.wizard-progress .step-circle,
.upload-zone,
.search-results,
.radio-option,
.review-section .review-value,
.consent-disclosure,
.duplicate-card,
.reveal-btn {
    transition: background-color var(--transition-theme),
                color var(--transition-theme),
                border-color var(--transition-theme),
                box-shadow var(--transition-theme);
}

/* ===== Shared Keyframes ===== */
@keyframes pageLoad {
    from { opacity: 0; }
    to { opacity: 1; }
}
@keyframes fadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}
@keyframes spin { to { transform: rotate(360deg); } }

/* ===== Base ===== */
body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background: var(--bg-body);
    color: var(--text-primary);
    min-height: 100vh;
    animation: pageLoad 0.4s ease-out;
}

.container {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 20px;
}

/* Typography */
h1 { font-size: 1.875rem; font-weight: 700; color: var(--text-heading); }
h2 { font-size: 1.5rem; font-weight: 600; color: var(--text-heading); }
h3 { font-size: 1.25rem; font-weight: 600; color: var(--text-primary); }

/* Logo */
.logo {
    display: flex;
    align-items: center;
    text-decoration: none;
}
.logo-img {
    height: 100px;
    width: auto;
}
[data-theme="light"] .logo-img-dark { display: none; }
[data-theme="light"] .logo-img-light { display: inline-block; }
[data-theme="dark"] .logo-img-dark { display: inline-block; }
[data-theme="dark"] .logo-img-light { display: none; }

/* ===== Theme Toggle ===== */
.theme-toggle {
    background: none;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 6px 10px;
    cursor: pointer;
    font-size: 1.125rem;
    line-height: 1;
    color: var(--text-secondary);
    transition: all 0.2s ease;
    display: flex;
    align-items: center;
    justify-content: center;
}
.theme-toggle:hover {
    border-color: var(--primary);
    color: var(--primary);
    background: var(--primary-light);
}
.theme-toggle .icon-sun,
.theme-toggle .icon-moon { display: none; }
[data-theme="dark"] .theme-toggle .icon-sun { display: inline; }
[data-theme="light"] .theme-toggle .icon-moon { display: inline; }
.theme-toggle-fixed {
    position: fixed;
    top: 16px;
    right: 16px;
    z-index: 100;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 10px 20px;
    border: none;
    border-radius: var(--radius);
    font-size: 0.9375rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.15s ease;
    text-decoration: none;
}
.btn:disabled { opacity: 0.5; cursor: not-allowed; }
.btn-primary { background: var(--primary); color: white; }
.btn-primary:hover:not(:disabled) { background: var(--primary-hover); transform: translateY(-1px); }
.btn-secondary { background: var(--bg-elevated); color: var(--text-primary); border: 1px solid var(--border); }
.btn-secondary:hover:not(:disabled) { background: var(--bg-card-hover); border-color: var(--text-muted); }
.btn-danger { background: var(--danger); color: white; }
.btn-danger:hover:not(:disabled) { background: var(--danger-hover); }
.btn-teal { background: var(--teal); color: #1a1a2e; font-weight: 600; }
.btn-teal:hover:not(:disabled) { background: var(--teal-hover); transform: translateY(-1px); }
.btn-sm { padding: 6px 12px; font-size: 0.8125rem; }
.btn-block { width: 100%; justify-content: center; }

/* Forms */
.form-group { margin-bottom: 20px; }
.form-group label {
    display: block;
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--text-secondary);
    margin-bottom: 6px;
}
.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 10px 14px;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    font-size: 1rem;
    transition: border-color 0.15s ease, box-shadow 0.2s ease;
    background: var(--bg-input);
    color: var(--text-primary);
}
.form-group input::placeholder,
.form-group textarea::placeholder { color: var(--text-muted); }
.form-group select { color: var(--text-primary); }
.form-group select option { background: var(--bg-card); color: var(--text-primary); }
.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px var(--focus-ring);
}
.form-group .error-text {
    color: var(--primary);
    font-size: 0.8125rem;
    margin-top: 4px;
}
.form-group input.error,
.form-group select.error {
    border-color: var(--primary);
}
.form-hint {
    font-size: 0.8125rem;
    color: var(--text-muted);
    margin-top: 4px;
}

/* Cards */
.card {
    background: var(--bg-card);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    padding: 24px;
    border: 1px solid var(--border-light);
}

/* Tables */
.table-wrap { overflow-x: auto; }
table {
    width: 100%;
    font-size: 0.875rem;
}
thead th {
    text-align: left;
    padding: 12px 16px;
    font-weight: 600;
    color: var(--text-muted);
    border-bottom: 2px solid var(--border);
    white-space: nowrap;
    text-transform: uppercase;
    font-size: 0.75rem;
    letter-spacing: 0.04em;
}
tbody td {
    padding: 12px 16px;
    border-bottom: 1px solid var(--border-light);
    color: var(--text-secondary);
}
tbody tr {
    transition: background-color 0.15s ease;
}
tbody tr:hover { background: var(--bg-elevated); }
tbody tr.flagged { background: var(--warning-light); }

/* Badges */
.badge {
    display: inline-block;
    padding: 2px 10px;
    border-radius: 12px;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.02em;
}
.badge-success { background: var(--success-light); color: var(--teal); }
.badge-warning { background: var(--warning-light); color: var(--warning); }
.badge-danger { background: var(--primary-light); color: var(--primary); }
.badge-info { background: var(--teal-light); color: var(--teal); }
.badge-muted { background: var(--border); color: var(--text-muted); }

/* Alerts */
.alert {
    padding: 14px 18px;
    border-radius: var(--radius);
    font-size: 0.875rem;
    margin-bottom: 16px;
}
.alert-error { background: var(--primary-light); color: var(--primary); border: 1px solid rgba(232, 93, 74, 0.3); }
.alert-success { background: var(--success-light); color: var(--teal); border: 1px solid rgba(78, 205, 196, 0.3); }
.alert-warning { background: var(--warning-light); color: var(--warning); border: 1px solid rgba(232, 184, 74, 0.3); }

/* Modal */
.modal-overlay {
    position: fixed;
    inset: 0;
    background: var(--modal-overlay);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
    opacity: 0;
    visibility: hidden;
    transition: all 0.25s ease;
    backdrop-filter: blur(4px);
}
.modal-overlay.active { opacity: 1; visibility: visible; }
.modal {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    box-shadow: var(--shadow-lg);
    padding: 28px;
    width: 90%;
    max-width: 560px;
    max-height: 90vh;
    overflow-y: auto;
    transform: translateY(12px);
    opacity: 0;
    transition: transform 0.25s ease, opacity 0.25s ease;
}
.modal-overlay.active .modal {
    transform: translateY(0);
    opacity: 1;
}
.modal h2 { margin-bottom: 20px; }
.modal-actions {
    display: flex;
    gap: 12px;
    justify-content: flex-end;
    margin-top: 24px;
}

/* Header */
.app-header {
    background: var(--bg-card);
    border-bottom: 1px solid var(--border);
    padding: 14px 0;
}
.app-header .container {
    display: flex;
    align-items: center;
    justify-content: space-between;
}
.app-header h1 { font-size: 1.25rem; }
.app-header nav { display: flex; gap: 12px; align-items: center; }

/* Pagination */
.pagination {
    display: flex;
    gap: 8px;
    align-items: center;
    justify-content: center;
    margin-top: 24px;
    font-size: 0.875rem;
}
.pagination button {
    padding: 6px 14px;
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    background: var(--bg-elevated);
    color: var(--text-secondary);
    cursor: pointer;
    transition: all 0.15s;
}
.pagination button:hover:not(:disabled) { border-color: var(--primary); color: var(--primary); }
.pagination button:disabled { opacity: 0.4; cursor: not-allowed; }
.pagination .current { color: var(--text-muted); }

/* Loading spinner */
.spinner {
    width: 20px; height: 20px;
    border: 2px solid var(--border);
    border-top-color: var(--primary);
    border-radius: 50%;
    animation: spin 0.6s linear infinite;
    display: inline-block;
}

/* Utility */
.text-center { text-align: center; }
.text-right { text-align: right; }
.text-muted { color: var(--text-muted); }
.text-sm { font-size: 0.875rem; }
.mt-1 { margin-top: 8px; }
.mt-2 { margin-top: 16px; }
.mt-3 { margin-top: 24px; }
.mb-2 { margin-bottom: 16px; }
.mb-3 { margin-bottom: 24px; }
.flex { display: flex; }
.flex-between { display: flex; justify-content: space-between; align-items: center; }
.gap-2 { gap: 16px; }
.hidden { display: none !important; }

/* Responsive */
@media (max-width: 768px) {
    .container { padding: 0 16px; }
    h1 { font-size: 1.5rem; }
    .card { padding: 16px; }
    .btn { padding: 8px 16px; font-size: 0.875rem; }
    table { font-size: 0.8125rem; }
    thead th, tbody td { padding: 8px 10px; }
    .hide-mobile { display: none; }
}