/**
 * GetXtra Tools — Custom Theme Design System
 * =========================================================================
 * 100% original, self-written CSS. No third-party frameworks, no CDN,
 * no downloaded fonts. Typography uses the native system font stack.
 *
 * This file layers a token-driven component system ON TOP of the existing
 * utility classes in custom-utilities.css. It defines:
 *   1. Design tokens (CSS custom properties): colors, spacing, radius,
 *      shadows, typography.
 *   2. A full brand color scale (50–900) + semantic status colors.
 *   3. A lightweight base reset.
 *   4. Reusable component classes (.btn, .card, .input, .badge, .alert,
 *      .table, .modal, .dropdown, .tabs, .nav, .sidebar, …).
 *   5. Dark mode via the `.dark` class, implemented entirely with CSS
 *      variables that are re-mapped under `.dark`.
 * =========================================================================
 */

/* =========================================================================
   1. DESIGN TOKENS
   ========================================================================= */
:root {
    /* ---- Brand color scale (rose / red-pink — matches primary-* utilities) --- */
    --color-primary-50:  #fff1f2;
    --color-primary-100: #ffe4e6;
    --color-primary-200: #fecdd3;
    --color-primary-300: #fda4af;
    --color-primary-400: #fb7185;
    --color-primary-500: #f43f5e;
    --color-primary-600: #e11d48;
    --color-primary-700: #be123c;
    --color-primary-800: #9f1239;
    --color-primary-900: #881337;

    /* ---- Accent (hot pink) for gradients / highlights ---- */
    --color-accent-500: #ec4899;
    --color-accent-600: #db2777;

    /* ---- Secondary accents in the brand system ---- */
    --color-red-500:   #ef4444;
    --color-red-600:   #dc2626;
    --color-green-500: #22c55e;
    --color-green-600: #16a34a;
    --color-pink-500:  #ec4899;

    /* ---- Neutral / gray scale ---- */
    --color-gray-50:  #f8fafc;
    --color-gray-100: #f1f5f9;
    --color-gray-200: #e2e8f0;
    --color-gray-300: #cbd5e1;
    --color-gray-400: #94a3b8;
    --color-gray-500: #64748b;
    --color-gray-600: #475569;
    --color-gray-700: #334155;
    --color-gray-800: #1e293b;
    --color-gray-900: #0f172a;

    /* ---- Semantic status colors ---- */
    --color-success: #10b981;
    --color-success-bg: #ecfdf5;
    --color-danger:  #ef4444;
    --color-danger-bg: #fef2f2;
    --color-warning: #f59e0b;
    --color-warning-bg: #fffbeb;
    --color-info:    #3b82f6;
    --color-info-bg: #eff6ff;

    /* ---- Semantic surface tokens (light theme defaults) ---- */
    --bg:            var(--color-gray-50);
    --surface:       #ffffff;
    --surface-alt:   var(--color-gray-100);
    --surface-hover: var(--color-gray-100);
    --text:          var(--color-gray-900);
    --text-muted:    var(--color-gray-500);
    --text-inverse:  #ffffff;
    --border:        var(--color-gray-200);
    --border-strong: var(--color-gray-300);
    --ring:          rgba(244, 63, 94, 0.45);

    /* ---- Typography: native system font stack (no downloaded fonts) ---- */
    --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto,
                 Helvetica, Arial, sans-serif, "Apple Color Emoji",
                 "Segoe UI Emoji";
    --font-mono: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas,
                 "Liberation Mono", "Courier New", monospace;

    /* ---- Spacing scale ---- */
    --space-1: 0.25rem;
    --space-2: 0.5rem;
    --space-3: 0.75rem;
    --space-4: 1rem;
    --space-5: 1.25rem;
    --space-6: 1.5rem;
    --space-8: 2rem;

    /* ---- Radius ---- */
    --radius-sm: 0.375rem;
    --radius:    0.5rem;
    --radius-md: 0.75rem;
    --radius-lg: 1rem;
    --radius-xl: 1.5rem;
    --radius-full: 9999px;

    /* ---- Shadows ---- */
    --shadow-sm: 0 1px 2px 0 rgba(15, 23, 42, 0.05);
    --shadow:    0 1px 3px 0 rgba(15, 23, 42, 0.1), 0 1px 2px -1px rgba(15, 23, 42, 0.1);
    --shadow-md: 0 4px 6px -1px rgba(15, 23, 42, 0.1), 0 2px 4px -2px rgba(15, 23, 42, 0.1);
    --shadow-lg: 0 10px 15px -3px rgba(15, 23, 42, 0.1), 0 4px 6px -4px rgba(15, 23, 42, 0.1);
    --shadow-xl: 0 20px 25px -5px rgba(15, 23, 42, 0.15), 0 8px 10px -6px rgba(15, 23, 42, 0.1);

    /* ---- Motion ---- */
    --transition: 150ms cubic-bezier(0.4, 0, 0.2, 1);

    color-scheme: light;
}

/* =========================================================================
   1b. DARK THEME TOKEN RE-MAP
   ========================================================================= */
.dark {
    /* Black-heavy modern dark theme */
    --bg:            #0a0a0a;
    --surface:       #161616;
    --surface-alt:   #1e1e1e;
    --surface-hover: #262626;
    --text:          #f5f5f5;
    --text-muted:    #a3a3a3;
    --border:        #2a2a2a;
    --border-strong: #3a3a3a;
    --ring:          rgba(251, 113, 133, 0.5);

    --color-success-bg: rgba(16, 185, 129, 0.12);
    --color-danger-bg:  rgba(239, 68, 68, 0.12);
    --color-warning-bg: rgba(245, 158, 11, 0.12);
    --color-info-bg:    rgba(59, 130, 246, 0.12);

    color-scheme: dark;
}

/* =========================================================================
   2. BASE RESET (minimal — utilities handle most layout)
   ========================================================================= */
*, *::before, *::after { box-sizing: border-box; }

html {
    font-family: var(--font-sans);
    -webkit-text-size-adjust: 100%;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    text-rendering: optimizeLegibility;
    scroll-behavior: smooth;
}

/* Ensure the native system stack wins over the (now unused) "Inter" ref. */
body, .font-sans { font-family: var(--font-sans); }
code, kbd, pre, samp, .font-mono { font-family: var(--font-mono); }

:focus-visible {
    outline: 2px solid var(--color-primary-500);
    outline-offset: 2px;
}

::selection {
    background: var(--color-primary-500);
    color: #fff;
}

/* Custom themed scrollbar */
* {
    scrollbar-width: thin;
    scrollbar-color: var(--border-strong) transparent;
}
*::-webkit-scrollbar { width: 10px; height: 10px; }
*::-webkit-scrollbar-thumb {
    background: var(--border-strong);
    border-radius: var(--radius-full);
    border: 2px solid transparent;
    background-clip: content-box;
}
*::-webkit-scrollbar-thumb:hover { background: var(--color-gray-400); background-clip: content-box; }

/* Accessibility: skip-to-content link */
.skip-to-content {
    position: absolute;
    left: -999px;
    top: 0;
    z-index: 100000;
    padding: 0.75rem 1.25rem;
    background: var(--color-primary-600);
    color: #fff;
    border-radius: 0 0 var(--radius) 0;
    font-weight: 600;
}
.skip-to-content:focus { left: 0; }

[x-cloak] { display: none !important; }

/* =========================================================================
   3. BUTTONS
   ========================================================================= */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-2);
    padding: 0.5rem 1rem;
    font-family: inherit;
    font-size: 0.875rem;
    font-weight: 600;
    line-height: 1.25rem;
    border: 1px solid transparent;
    border-radius: var(--radius-md);
    cursor: pointer;
    user-select: none;
    text-decoration: none;
    white-space: nowrap;
    transition: background-color var(--transition), color var(--transition),
                border-color var(--transition), box-shadow var(--transition),
                transform var(--transition);
}
.btn:active { transform: translateY(1px); }
.btn:disabled, .btn[disabled] { opacity: 0.55; cursor: not-allowed; }
.btn:focus-visible { box-shadow: 0 0 0 3px var(--ring); outline: none; }

.btn-sm { padding: 0.3rem 0.7rem; font-size: 0.8125rem; }
.btn-lg { padding: 0.75rem 1.5rem; font-size: 1rem; }
.btn-block { width: 100%; }

.btn-primary {
    background: var(--color-primary-600);
    color: #fff;
    box-shadow: var(--shadow-sm);
}
.btn-primary:hover { background: var(--color-primary-700); box-shadow: var(--shadow-md); }

.btn-secondary {
    background: var(--surface);
    color: var(--text);
    border-color: var(--border-strong);
}
.btn-secondary:hover { background: var(--surface-hover); }

.btn-ghost { background: transparent; color: var(--text); }
.btn-ghost:hover { background: var(--surface-hover); }

.btn-danger { background: var(--color-danger); color: #fff; }
.btn-danger:hover { filter: brightness(0.93); }

.btn-success { background: var(--color-success); color: #fff; }
.btn-success:hover { filter: brightness(0.93); }

.btn-gradient {
    background: linear-gradient(135deg, var(--color-primary-600), var(--color-accent-600));
    color: #fff;
    box-shadow: var(--shadow-md);
}
.btn-gradient:hover { filter: brightness(1.06); box-shadow: var(--shadow-lg); }

/* =========================================================================
   4. CARDS
   ========================================================================= */
.card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    overflow: hidden;
}
.card-hover { transition: transform var(--transition), box-shadow var(--transition); }
.card-hover:hover { transform: translateY(-3px); box-shadow: var(--shadow-lg); }
.card-header {
    padding: var(--space-5);
    border-bottom: 1px solid var(--border);
    font-weight: 600;
    color: var(--text);
}
.card-body { padding: var(--space-5); color: var(--text); }
.card-footer {
    padding: var(--space-4) var(--space-5);
    border-top: 1px solid var(--border);
    background: var(--surface-alt);
}

/* =========================================================================
   5. FORMS
   ========================================================================= */
.form-group { margin-bottom: var(--space-4); }
.label {
    display: block;
    margin-bottom: var(--space-2);
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--text);
}
.input, .select, .textarea {
    display: block;
    width: 100%;
    padding: 0.55rem 0.85rem;
    font-family: inherit;
    font-size: 0.9375rem;
    color: var(--text);
    background: var(--surface);
    border: 1px solid var(--border-strong);
    border-radius: var(--radius-md);
    transition: border-color var(--transition), box-shadow var(--transition);
    appearance: none;
}
.textarea { min-height: 7rem; resize: vertical; }
.input::placeholder, .textarea::placeholder { color: var(--text-muted); }
.input:focus, .select:focus, .textarea:focus {
    outline: none;
    border-color: var(--color-primary-500);
    box-shadow: 0 0 0 3px var(--ring);
}
.input:disabled { background: var(--surface-alt); cursor: not-allowed; }
.input-error { border-color: var(--color-danger); }
.form-hint { margin-top: var(--space-1); font-size: 0.8125rem; color: var(--text-muted); }
.form-error { margin-top: var(--space-1); font-size: 0.8125rem; color: var(--color-danger); }

/* =========================================================================
   6. BADGES
   ========================================================================= */
.badge {
    display: inline-flex;
    align-items: center;
    gap: 0.25rem;
    padding: 0.15rem 0.6rem;
    font-size: 0.75rem;
    font-weight: 600;
    line-height: 1rem;
    border-radius: var(--radius-full);
    background: var(--surface-alt);
    color: var(--text-muted);
}
.badge-primary { background: var(--color-primary-100); color: var(--color-primary-700); }
.badge-success { background: var(--color-success-bg); color: var(--color-success); }
.badge-danger  { background: var(--color-danger-bg);  color: var(--color-danger); }
.badge-warning { background: var(--color-warning-bg); color: var(--color-warning); }
.badge-info    { background: var(--color-info-bg);    color: var(--color-info); }
.dark .badge-primary { background: rgba(99, 102, 241, 0.18); color: var(--color-primary-300); }

/* =========================================================================
   7. ALERTS
   ========================================================================= */
.alert {
    display: flex;
    align-items: flex-start;
    gap: var(--space-3);
    padding: var(--space-4);
    border: 1px solid var(--border);
    border-left-width: 4px;
    border-radius: var(--radius-md);
    background: var(--surface);
    color: var(--text);
    font-size: 0.9375rem;
}
.alert-success { background: var(--color-success-bg); border-left-color: var(--color-success); }
.alert-danger  { background: var(--color-danger-bg);  border-left-color: var(--color-danger); }
.alert-warning { background: var(--color-warning-bg); border-left-color: var(--color-warning); }
.alert-info    { background: var(--color-info-bg);    border-left-color: var(--color-info); }

/* =========================================================================
   8. TABLES
   ========================================================================= */
.table { width: 100%; border-collapse: collapse; font-size: 0.9375rem; color: var(--text); }
.table th, .table td {
    padding: 0.75rem 1rem;
    text-align: left;
    border-bottom: 1px solid var(--border);
}
.table thead th {
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.04em;
    color: var(--text-muted);
    background: var(--surface-alt);
}
.table tbody tr { transition: background-color var(--transition); }
.table tbody tr:hover { background: var(--surface-hover); }
.table-striped tbody tr:nth-child(even) { background: var(--surface-alt); }

/* =========================================================================
   9. MODAL
   ========================================================================= */
.modal-overlay {
    position: fixed;
    inset: 0;
    z-index: 9998;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--space-4);
    background: rgba(15, 23, 42, 0.55);
    backdrop-filter: blur(4px);
    -webkit-backdrop-filter: blur(4px);
}
.modal {
    width: 100%;
    max-width: 32rem;
    max-height: 90vh;
    overflow-y: auto;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-xl);
    animation: theme-modal-in 180ms cubic-bezier(0.16, 1, 0.3, 1);
}
.modal-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--space-5);
    border-bottom: 1px solid var(--border);
    font-weight: 600;
}
.modal-body { padding: var(--space-5); }
.modal-footer {
    display: flex;
    justify-content: flex-end;
    gap: var(--space-3);
    padding: var(--space-4) var(--space-5);
    border-top: 1px solid var(--border);
}
@keyframes theme-modal-in {
    from { opacity: 0; transform: translateY(12px) scale(0.98); }
    to   { opacity: 1; transform: translateY(0) scale(1); }
}

/* =========================================================================
   10. DROPDOWN
   ========================================================================= */
.dropdown { position: relative; display: inline-block; }
.dropdown-menu {
    position: absolute;
    right: 0;
    margin-top: var(--space-2);
    min-width: 12rem;
    padding: var(--space-2);
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-lg);
    z-index: 50;
}
.dropdown-item {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    padding: 0.5rem 0.75rem;
    font-size: 0.875rem;
    color: var(--text);
    border-radius: var(--radius-sm);
    text-decoration: none;
    cursor: pointer;
    transition: background-color var(--transition);
}
.dropdown-item:hover { background: var(--surface-hover); }
.dropdown-divider { height: 1px; margin: var(--space-2) 0; background: var(--border); border: 0; }

/* =========================================================================
   11. TABS
   ========================================================================= */
.tabs { display: flex; gap: var(--space-1); border-bottom: 1px solid var(--border); }
.tab {
    padding: 0.65rem 1rem;
    font-size: 0.9375rem;
    font-weight: 600;
    color: var(--text-muted);
    border: 0;
    border-bottom: 2px solid transparent;
    background: none;
    cursor: pointer;
    transition: color var(--transition), border-color var(--transition);
}
.tab:hover { color: var(--text); }
.tab.active, .tab[aria-selected="true"] {
    color: var(--color-primary-600);
    border-bottom-color: var(--color-primary-600);
}
.dark .tab.active, .dark .tab[aria-selected="true"] { color: var(--color-primary-400); border-bottom-color: var(--color-primary-400); }

/* =========================================================================
   12. NAV
   ========================================================================= */
.nav { display: flex; align-items: center; gap: var(--space-1); }
.nav-link {
    display: inline-flex;
    align-items: center;
    gap: var(--space-2);
    padding: 0.5rem 0.75rem;
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--text-muted);
    border-radius: var(--radius-md);
    text-decoration: none;
    transition: color var(--transition), background-color var(--transition);
}
.nav-link:hover { color: var(--text); background: var(--surface-hover); }
.nav-link.active { color: var(--color-primary-600); background: var(--color-primary-50); }
.dark .nav-link.active { color: var(--color-primary-300); background: rgba(99, 102, 241, 0.14); }

/* =========================================================================
   13. SIDEBAR
   ========================================================================= */
.sidebar {
    background: var(--surface);
    border-right: 1px solid var(--border);
}
.sidebar-item {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    padding: 0.65rem 0.75rem;
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--text-muted);
    border-radius: var(--radius-md);
    text-decoration: none;
    transition: color var(--transition), background-color var(--transition);
}
.sidebar-item:hover { color: var(--text); background: var(--surface-hover); }
.sidebar-item.active { color: var(--color-primary-600); background: var(--color-primary-50); }
.dark .sidebar-item.active { color: var(--color-primary-300); background: rgba(99, 102, 241, 0.14); }

/* =========================================================================
   14. UTILITY HELPERS BUILT ON TOKENS
   ========================================================================= */
.theme-surface { background: var(--surface); color: var(--text); }
.theme-muted { color: var(--text-muted); }
.theme-border { border-color: var(--border); }
.gradient-text {
    background: linear-gradient(90deg, var(--color-primary-600), var(--color-accent-600));
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    color: transparent;
}
.divider { height: 1px; background: var(--border); border: 0; margin: var(--space-4) 0; }

/* Reduced-motion preference */
@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
        scroll-behavior: auto !important;
    }
}