/* ═══════════════════════════════════════════════════════════════════
   ArxAI v3 — SaaS Modern Design System
   Inspired by Vercel, Linear, Stripe
   ═══════════════════════════════════════════════════════════════════ */

/* ── CSS Reset ── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

/* ── Design Tokens ── */
:root {
    /* Surfaces */
    --bg-root: #09090b;
    --bg-primary: #0c0c10;
    --bg-secondary: #111116;
    --bg-tertiary: #18181e;
    --bg-elevated: #1e1e26;
    --bg-hover: #24242e;
    --bg-active: #2a2a36;

    /* Borders */
    --border-subtle: rgba(255,255,255,0.06);
    --border-color: rgba(255,255,255,0.08);
    --border-strong: rgba(255,255,255,0.12);
    --border-focus: #7c5cff;

    /* Text */
    --text-primary: #f0f0f5;
    --text-secondary: #a0a0b4;
    --text-tertiary: #6b6b82;
    --text-muted: #4a4a5e;
    --text-inverse: #09090b;

    /* Brand */
    --brand-primary: #7c5cff;
    --brand-primary-hover: #9178ff;
    --brand-primary-muted: rgba(124,92,255,0.15);
    --brand-secondary: #06d6a0;
    --brand-secondary-muted: rgba(6,214,160,0.15);
    --brand-gradient: linear-gradient(135deg, #7c5cff 0%, #06d6a0 100%);

    /* Semantic */
    --success: #22c55e;
    --success-muted: rgba(34,197,94,0.12);
    --warning: #f59e0b;
    --warning-muted: rgba(245,158,11,0.12);
    --danger: #ef4444;
    --danger-muted: rgba(239,68,68,0.12);
    --info: #3b82f6;
    --info-muted: rgba(59,130,246,0.12);

    /* Spacing */
    --space-xs: 4px;
    --space-sm: 8px;
    --space-md: 16px;
    --space-lg: 24px;
    --space-xl: 32px;
    --space-2xl: 48px;

    /* Radius */
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 20px;
    --radius-full: 9999px;

    /* Shadows */
    --shadow-sm: 0 1px 2px rgba(0,0,0,0.3);
    --shadow-md: 0 4px 12px rgba(0,0,0,0.3);
    --shadow-lg: 0 8px 32px rgba(0,0,0,0.4);
    --shadow-glow: 0 0 20px rgba(124,92,255,0.15);
    --shadow-glow-success: 0 0 20px rgba(34,197,94,0.15);

    /* Typography */
    --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-mono: 'JetBrains Mono', 'Fira Code', monospace;
    --font-display: 'Space Grotesk', var(--font-sans);

    /* Transitions */
    --transition-fast: 0.15s ease;
    --transition-normal: 0.25s ease;
    --transition-slow: 0.4s cubic-bezier(0.16, 1, 0.3, 1);

    /* Layout */
    --sidebar-width: 260px;
    --header-height: 64px;
    --content-max-width: 1200px;
}

/* ── Light Theme ── */
[data-theme="light"] {
    --bg-root: #fafafa;
    --bg-primary: #ffffff;
    --bg-secondary: #f5f5f7;
    --bg-tertiary: #ebebf0;
    --bg-elevated: #ffffff;
    --bg-hover: #f0f0f5;
    --bg-active: #e8e8ee;
    --border-subtle: rgba(0,0,0,0.06);
    --border-color: rgba(0,0,0,0.08);
    --border-strong: rgba(0,0,0,0.15);
    --text-primary: #111118;
    --text-secondary: #555566;
    --text-tertiary: #888899;
    --text-muted: #aaaabb;
    --text-inverse: #ffffff;
    --shadow-sm: 0 1px 3px rgba(0,0,0,0.08);
    --shadow-md: 0 4px 12px rgba(0,0,0,0.06);
    --shadow-lg: 0 8px 32px rgba(0,0,0,0.08);
    --shadow-glow: 0 0 20px rgba(124,92,255,0.1);
}

/* ── Base ── */
html {
    font-size: 15px;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-sans);
    background: var(--bg-root);
    color: var(--text-primary);
    line-height: 1.6;
    min-height: 100vh;
}

a { color: var(--brand-primary); text-decoration: none; transition: color var(--transition-fast); }
a:hover { color: var(--brand-primary-hover); }

code, pre {
    font-family: var(--font-mono);
    font-size: 0.85em;
    background: var(--bg-tertiary);
    border-radius: var(--radius-sm);
    padding: 2px 6px;
}

img { max-width: 100%; height: auto; }
hr { border: 0; border-top: 1px solid var(--border-subtle); margin: var(--space-lg) 0; }

/* ── Fonts ── */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700;800&family=Space+Grotesk:wght@500;600;700;800&family=JetBrains+Mono:wght@400;500&display=swap');

/* ═══════════════════════════════════════════
   BUTTONS
   ═══════════════════════════════════════════ */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 10px 20px;
    font-family: var(--font-sans);
    font-size: 0.87rem;
    font-weight: 600;
    line-height: 1.4;
    border: 1px solid transparent;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all var(--transition-normal);
    white-space: nowrap;
    text-decoration: none;
}

.btn:disabled {
    opacity: 0.4;
    cursor: not-allowed;
    transform: none !important;
    box-shadow: none !important;
}

.btn-primary {
    background: var(--brand-primary);
    color: #fff;
    border-color: var(--brand-primary);
    box-shadow: 0 0 0 0 rgba(124,92,255,0);
}
.btn-primary:hover:not(:disabled) {
    background: var(--brand-primary-hover);
    border-color: var(--brand-primary-hover);
    transform: translateY(-1px);
    box-shadow: var(--shadow-glow);
}

.btn-secondary {
    background: var(--bg-tertiary);
    color: var(--text-primary);
    border-color: var(--border-color);
}
.btn-secondary:hover:not(:disabled) {
    background: var(--bg-hover);
    border-color: var(--border-strong);
}

.btn-ghost {
    background: transparent;
    color: var(--text-secondary);
    border-color: transparent;
}
.btn-ghost:hover:not(:disabled) {
    background: var(--bg-hover);
    color: var(--text-primary);
}

.btn-danger {
    background: var(--danger);
    color: #fff;
    border-color: var(--danger);
}
.btn-danger:hover:not(:disabled) {
    background: #dc2626;
    transform: translateY(-1px);
}

.btn-sm { padding: 6px 14px; font-size: 0.8rem; border-radius: var(--radius-sm); }
.btn-lg { padding: 14px 28px; font-size: 0.95rem; border-radius: var(--radius-lg); }
.btn-full { width: 100%; }

/* ═══════════════════════════════════════════
   CARDS
   ═══════════════════════════════════════════ */
.card {
    background: var(--bg-secondary);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-lg);
    padding: var(--space-lg);
    transition: border-color var(--transition-normal), box-shadow var(--transition-normal);
}

.card:hover {
    border-color: var(--border-color);
}

.card-glow:hover {
    box-shadow: var(--shadow-glow);
    border-color: rgba(124,92,255,0.2);
}

/* ═══════════════════════════════════════════
   FORMS
   ═══════════════════════════════════════════ */
.form-group {
    margin-bottom: var(--space-md);
}

.form-label {
    display: block;
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--text-secondary);
    margin-bottom: 6px;
    letter-spacing: 0.02em;
}

.form-input,
select.form-input,
textarea.form-input,
input[type="text"].form-input,
input[type="email"].form-input,
input[type="password"].form-input,
input[type="number"].form-input,
input[type="url"].form-input {
    width: 100%;
    padding: 10px 14px;
    font-family: var(--font-sans);
    font-size: 0.87rem;
    color: var(--text-primary);
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    outline: none;
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
    -webkit-appearance: none;
}

.form-input:focus {
    border-color: var(--brand-primary);
    box-shadow: 0 0 0 3px var(--brand-primary-muted);
}

.form-input::placeholder {
    color: var(--text-muted);
}

textarea.form-input {
    min-height: 80px;
    resize: vertical;
}

select.form-input {
    cursor: pointer;
    padding-right: 34px;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12' fill='none'%3E%3Cpath d='M3 4.5L6 7.5L9 4.5' stroke='%236b6b82' stroke-width='1.5' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 12px center;
    background-size: 12px;
}

input[type="checkbox"] {
    width: 18px;
    height: 18px;
    accent-color: var(--brand-primary);
    cursor: pointer;
}

/* ═══════════════════════════════════════════
   BADGES
   ═══════════════════════════════════════════ */
.badge {
    display: inline-flex;
    align-items: center;
    padding: 3px 10px;
    font-size: 0.72rem;
    font-weight: 600;
    letter-spacing: 0.03em;
    border-radius: var(--radius-full);
    white-space: nowrap;
}

.badge-brand { background: var(--brand-primary-muted); color: var(--brand-primary); }
.badge-success { background: var(--success-muted); color: var(--success); }
.badge-warning { background: var(--warning-muted); color: var(--warning); }
.badge-danger { background: var(--danger-muted); color: var(--danger); }
.badge-info { background: var(--info-muted); color: var(--info); }

/* ═══════════════════════════════════════════
   ALERTS
   ═══════════════════════════════════════════ */
.alert {
    padding: 12px 16px;
    border-radius: var(--radius-md);
    font-size: 0.87rem;
    font-weight: 500;
    border: 1px solid;
}

.alert-error { background: var(--danger-muted); color: #fca5a5; border-color: rgba(239,68,68,0.2); }
.alert-success { background: var(--success-muted); color: #86efac; border-color: rgba(34,197,94,0.2); }
.alert-info { background: var(--info-muted); color: #93c5fd; border-color: rgba(59,130,246,0.2); }
.alert-warning { background: var(--warning-muted); color: #fcd34d; border-color: rgba(245,158,11,0.2); }

/* ═══════════════════════════════════════════
   TABLES
   ═══════════════════════════════════════════ */
.table-wrap {
    overflow-x: auto;
    border-radius: var(--radius-md);
}

table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.85rem;
}

thead th {
    padding: 10px 14px;
    font-size: 0.76rem;
    font-weight: 600;
    color: var(--text-tertiary);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    text-align: left;
    border-bottom: 1px solid var(--border-color);
    background: var(--bg-tertiary);
    white-space: nowrap;
}

tbody td {
    padding: 10px 14px;
    color: var(--text-secondary);
    border-bottom: 1px solid var(--border-subtle);
    vertical-align: middle;
}

tbody tr { transition: background var(--transition-fast); }
tbody tr:hover { background: var(--bg-hover); }
tbody tr:last-child td { border-bottom: none; }

/* ═══════════════════════════════════════════
   STATS
   ═══════════════════════════════════════════ */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: var(--space-md);
    margin-bottom: var(--space-lg);
}

.stat-card {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    padding: var(--space-lg);
}

.stat-icon {
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-md);
    font-size: 1.4rem;
    flex-shrink: 0;
}

.stat-value {
    font-family: var(--font-display);
    font-size: 1.6rem;
    font-weight: 700;
    line-height: 1.2;
}

.stat-label {
    font-size: 0.76rem;
    color: var(--text-tertiary);
    margin-top: 2px;
}

/* ═══════════════════════════════════════════
   EMPTY STATE
   ═══════════════════════════════════════════ */
.empty-state {
    text-align: center;
    padding: var(--space-2xl) var(--space-lg);
}

.empty-state-icon { font-size: 2.5rem; margin-bottom: var(--space-md); opacity: 0.6; }
.empty-state-title { font-size: 1rem; font-weight: 600; color: var(--text-primary); margin-bottom: var(--space-sm); }
.empty-state-desc { font-size: 0.85rem; color: var(--text-tertiary); max-width: 400px; margin: 0 auto; }

/* ═══════════════════════════════════════════
   PAGE HEADER
   ═══════════════════════════════════════════ */
.page-header {
    margin-bottom: var(--space-lg);
}

.page-title {
    font-family: var(--font-display);
    font-size: 1.6rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 4px;
}

.page-subtitle {
    font-size: 0.87rem;
    color: var(--text-tertiary);
}

/* ═══════════════════════════════════════════
   APP LAYOUT — Sidebar + Content
   ═══════════════════════════════════════════ */
.app-layout {
    display: flex;
    min-height: 100vh;
    overflow-x: hidden;
}

/* ── Sidebar ── */
.app-sidebar,
.sidebar,
.admin-sidebar {
    width: var(--sidebar-width);
    background: var(--bg-primary);
    border-right: 1px solid var(--border-subtle);
    display: flex;
    flex-direction: column;
    position: fixed;
    top: 0;
    left: 0;
    bottom: 0;
    z-index: 100;
    overflow-y: auto;
    overflow-x: hidden;
    flex-shrink: 0;
    transition: transform var(--transition-slow);
}

.sidebar-brand {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 20px 20px 16px;
    text-decoration: none;
    border-bottom: 1px solid var(--border-subtle);
}

.sidebar-brand-icon {
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--brand-gradient);
    border-radius: var(--radius-md);
    font-size: 1.1rem;
}

.sidebar-brand-name {
    font-family: var(--font-display);
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--text-primary);
}

.sidebar-brand-version {
    font-size: 0.68rem;
    color: var(--text-muted);
    font-weight: 500;
    padding: 2px 6px;
    background: var(--bg-tertiary);
    border-radius: var(--radius-full);
}

.sidebar-nav {
    flex: 1;
    padding: var(--space-md) var(--space-sm);
}

.sidebar-section {
    margin-bottom: var(--space-lg);
}

.sidebar-section-title {
    font-size: 0.68rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--text-muted);
    padding: 0 12px;
    margin-bottom: var(--space-sm);
}

.sidebar-link {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 9px 12px;
    font-size: 0.87rem;
    font-weight: 500;
    color: var(--text-secondary);
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
    text-decoration: none;
    margin-bottom: 2px;
}

.sidebar-link:hover {
    background: var(--bg-hover);
    color: var(--text-primary);
}

.sidebar-link.active {
    background: var(--brand-primary-muted);
    color: var(--brand-primary);
    font-weight: 600;
}

.sidebar-link-icon {
    width: 20px;
    text-align: center;
    font-size: 1rem;
    flex-shrink: 0;
}

.sidebar-footer {
    padding: var(--space-md);
    border-top: 1px solid var(--border-subtle);
}

.sidebar-user {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 10px 12px;
    border-radius: var(--radius-md);
    background: var(--bg-tertiary);
}

.sidebar-user-avatar {
    width: 34px;
    height: 34px;
    border-radius: var(--radius-full);
    background: var(--brand-gradient);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.85rem;
    font-weight: 700;
    color: #fff;
    flex-shrink: 0;
}

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

.sidebar-user-name {
    font-size: 0.82rem;
    font-weight: 600;
    color: var(--text-primary);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.sidebar-user-credits {
    font-size: 0.72rem;
    color: var(--text-tertiary);
}

/* ── Main Content ── */
.app-content,
.main-content,
.admin-main {
    flex: 1;
    margin-left: var(--sidebar-width);
    padding: var(--space-xl) var(--space-xl) var(--space-2xl);
    min-width: 0;
    max-width: 100%;
    overflow-x: hidden;
    animation: fadeIn 0.3s ease;
}

.page-content {
    max-width: var(--content-max-width);
}

/* Mobile header */
.app-mobile-header {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: var(--header-height);
    background: var(--bg-primary);
    border-bottom: 1px solid var(--border-subtle);
    z-index: 90;
    align-items: center;
    padding: 0 var(--space-md);
    gap: var(--space-md);
}

.mobile-menu-btn {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: none;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    color: var(--text-primary);
    font-size: 1.2rem;
    cursor: pointer;
}

.sidebar-overlay {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(0,0,0,0.6);
    z-index: 99;
    backdrop-filter: blur(4px);
    -webkit-backdrop-filter: blur(4px);
}

/* Tool buttons (theme/lang) */
.app-tool-btn {
    width: 36px;
    height: 36px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    color: var(--text-secondary);
    font-size: 0.9rem;
    cursor: pointer;
    transition: all var(--transition-fast);
}
.app-tool-btn:hover {
    background: var(--bg-hover);
    color: var(--text-primary);
    border-color: var(--border-strong);
}

.sidebar-tools {
    display: flex;
    gap: 6px;
    padding: 0 var(--space-md) var(--space-md);
}

/* ── Backward-compatible old class names ── */
.sidebar-brand .sidebar-logo,
.sidebar-brand .sidebar-name { /* handled by sidebar-brand-icon/name */ }
.sidebar-brand .sidebar-version { font-size: 0.68rem; color: var(--text-muted); padding: 2px 6px; background: var(--bg-tertiary); border-radius: var(--radius-full); }

.nav-item {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 9px 12px;
    font-size: 0.87rem;
    font-weight: 500;
    color: var(--text-secondary);
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
    text-decoration: none;
    margin-bottom: 2px;
}
.nav-item:hover {
    background: var(--bg-hover);
    color: var(--text-primary);
}
.nav-item.nav-active {
    background: var(--brand-primary-muted);
    color: var(--brand-primary);
    font-weight: 600;
}
.nav-item.nav-admin {
    color: var(--warning);
}
.nav-icon {
    width: 20px;
    text-align: center;
    font-size: 1rem;
    flex-shrink: 0;
}

.sidebar-bottom {
    padding: var(--space-sm);
    border-top: 1px solid var(--border-subtle);
    margin-top: auto;
}

.sidebar-cta {
    padding: var(--space-md);
    background: var(--bg-tertiary);
    border-radius: var(--radius-md);
    margin: var(--space-sm) var(--space-sm) var(--space-md);
}
.sidebar-cta .sidebar-cta-title {
    font-size: 0.85rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 4px;
}
.sidebar-cta p {
    font-size: 0.76rem;
    color: var(--text-tertiary);
    margin-bottom: var(--space-sm);
    line-height: 1.5;
}

.user-card {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 10px 12px;
    border-radius: var(--radius-md);
    background: var(--bg-tertiary);
    margin: var(--space-sm);
}
.user-avatar {
    width: 34px;
    height: 34px;
    border-radius: var(--radius-full);
    background: var(--brand-gradient);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.85rem;
    font-weight: 700;
    color: #fff;
    flex-shrink: 0;
}
.user-info { flex: 1; min-width: 0; }
.user-name {
    font-size: 0.82rem;
    font-weight: 600;
    color: var(--text-primary);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}
.user-email {
    font-size: 0.72rem;
    color: var(--text-tertiary);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}
.btn-icon-sm {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 32px;
    height: 32px;
    border-radius: var(--radius-md);
    background: transparent;
    border: none;
    color: var(--text-muted);
    text-decoration: none;
    font-size: 0.9rem;
    cursor: pointer;
    transition: all var(--transition-fast);
    flex-shrink: 0;
}
.btn-icon-sm:hover {
    background: var(--bg-hover);
    color: var(--text-primary);
}

.admin-group-label {
    font-size: 0.68rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--text-muted);
    padding: 12px 12px 6px;
}

.admin-layout {
    display: flex;
    min-height: 100vh;
    overflow-x: hidden;
}

/* Mobile top bar */
.mobile-topbar {
    display: none;
    position: fixed;
    top: 0; left: 0; right: 0;
    height: var(--header-height);
    background: var(--bg-primary);
    border-bottom: 1px solid var(--border-subtle);
    z-index: 90;
    align-items: center;
    padding: 0 var(--space-md);
    gap: var(--space-sm);
}
.mobile-menu-toggle {
    width: 40px; height: 40px;
    display: flex; align-items: center; justify-content: center;
    background: none;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    color: var(--text-primary);
    font-size: 1.2rem;
    cursor: pointer;
}
.mobile-brand {
    display: flex; align-items: center; gap: 6px;
    text-decoration: none; color: var(--text-primary);
}
.mobile-topbar-actions {
    margin-left: auto;
    display: flex; gap: 6px; align-items: center;
}
.mobile-nav {
    display: none;
    position: fixed;
    top: var(--header-height); left: 0; right: 0;
    background: var(--bg-primary);
    border-bottom: 1px solid var(--border-color);
    z-index: 89;
    padding: var(--space-sm);
    flex-direction: column;
}
.mobile-nav.is-open { display: flex; }

.app-tool-btn-mobile {
    width: 32px; height: 32px;
    font-size: 0.8rem;
}

/* ═══════════════════════════════════════════
   LANDING PAGE
   ═══════════════════════════════════════════ */
.landing-page {
    background: var(--bg-root);
}

.landing-shell {
    max-width: 1100px;
    margin: 0 auto;
    padding: 0 var(--space-lg);
}

.landing-topbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--space-lg) 0;
    gap: var(--space-md);
}

.landing-brand {
    display: flex;
    align-items: center;
    gap: 10px;
    text-decoration: none;
}

.landing-brand-icon {
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--brand-gradient);
    border-radius: var(--radius-md);
    font-size: 1.1rem;
}

.landing-brand-name {
    font-family: var(--font-display);
    font-size: 1.2rem;
    font-weight: 700;
    color: var(--text-primary);
}

.landing-brand-version {
    font-size: 0.68rem;
    color: var(--text-muted);
    font-weight: 500;
    padding: 2px 6px;
    background: var(--bg-tertiary);
    border-radius: var(--radius-full);
}

.landing-topbar-actions {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
}

/* Hero */
.landing-hero {
    display: grid;
    grid-template-columns: 1.1fr 0.9fr;
    gap: var(--space-2xl);
    align-items: center;
    padding: var(--space-2xl) 0 60px;
}

.landing-hero-content { max-width: 560px; }

.landing-title {
    font-family: var(--font-display);
    font-size: 2.8rem;
    font-weight: 800;
    line-height: 1.15;
    color: var(--text-primary);
    margin: var(--space-md) 0;
    background: linear-gradient(135deg, var(--text-primary) 40%, var(--brand-primary) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.landing-subtitle {
    font-size: 1.05rem;
    color: var(--text-secondary);
    line-height: 1.7;
    margin-bottom: var(--space-lg);
}

.landing-hero-actions {
    display: flex;
    gap: var(--space-md);
    flex-wrap: wrap;
}

.landing-kpis {
    display: flex;
    gap: var(--space-xl);
    margin-top: var(--space-xl);
}

.landing-kpi strong {
    display: block;
    font-family: var(--font-display);
    font-size: 1.5rem;
    font-weight: 800;
    color: var(--text-primary);
}

.landing-kpi span {
    font-size: 0.78rem;
    color: var(--text-tertiary);
}

.landing-hero-panel {
    background: var(--bg-secondary);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-xl);
    padding: var(--space-xl);
    position: relative;
    overflow: hidden;
}

.landing-hero-panel::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle at 70% 30%, rgba(124,92,255,0.06) 0%, transparent 50%);
    pointer-events: none;
}

.landing-hero-panel h3 {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: var(--space-md);
}

.benefit-list {
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
}

.benefit-item {
    padding: 10px 14px;
    background: var(--bg-tertiary);
    border-radius: var(--radius-md);
    font-size: 0.87rem;
    color: var(--text-secondary);
    border-left: 3px solid var(--brand-primary);
}

.landing-note {
    margin-top: var(--space-md);
    font-size: 0.82rem;
    color: var(--text-muted);
    font-style: italic;
}

/* Sections */
.landing-section {
    padding: 60px 0;
}

.landing-section-head {
    text-align: center;
    margin-bottom: var(--space-xl);
}

.landing-section-head h2 {
    font-family: var(--font-display);
    font-size: 1.8rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: var(--space-sm);
}

.landing-section-head p {
    font-size: 0.95rem;
    color: var(--text-secondary);
}

/* Template grid */
.template-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
    gap: var(--space-md);
}

.template-card {
    background: var(--bg-secondary);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-lg);
    padding: var(--space-lg);
    transition: all var(--transition-normal);
}

.template-card:hover {
    border-color: var(--border-strong);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.template-tags { margin-bottom: var(--space-sm); }

.template-card h3 {
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--space-sm);
}

.template-card p {
    font-size: 0.82rem;
    color: var(--text-tertiary);
    line-height: 1.6;
}

/* Pricing grid */
.landing-pricing-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-md);
}

.landing-pricing-card {
    background: var(--bg-secondary);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-lg);
    padding: var(--space-xl);
    text-align: center;
    transition: all var(--transition-normal);
}

.landing-pricing-card.is-highlight {
    border-color: var(--brand-primary);
    box-shadow: var(--shadow-glow);
    position: relative;
}

.landing-pricing-card h3 {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: var(--space-sm);
}

.landing-pricing-price {
    font-family: var(--font-display);
    font-size: 1.6rem;
    font-weight: 800;
    color: var(--brand-primary);
    margin-bottom: var(--space-sm);
}

.landing-pricing-card p {
    font-size: 0.85rem;
    color: var(--text-tertiary);
}

/* CTA */
.landing-cta {
    text-align: center;
    padding: 60px 0 80px;
}

.landing-cta h2 {
    font-family: var(--font-display);
    font-size: 1.8rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: var(--space-md);
}

.landing-cta p {
    font-size: 0.95rem;
    color: var(--text-secondary);
    margin-bottom: var(--space-lg);
}

/* ═══════════════════════════════════════════
   AUTH PAGES
   ═══════════════════════════════════════════ */
.auth-page {
    min-height: 100vh;
}

.auth-container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    min-height: 100vh;
}

.auth-brand {
    background: var(--bg-secondary);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--space-2xl);
    position: relative;
    overflow: hidden;
}

.auth-brand::before {
    content: '';
    position: absolute;
    top: -30%;
    left: -30%;
    width: 160%;
    height: 160%;
    background: radial-gradient(circle at 40% 50%, rgba(124,92,255,0.08) 0%, transparent 50%);
    pointer-events: none;
}

.auth-brand-content {
    max-width: 420px;
    position: relative;
}

.auth-logo {
    width: 56px;
    height: 56px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--brand-gradient);
    border-radius: var(--radius-lg);
    font-size: 1.5rem;
    margin-bottom: var(--space-lg);
}

.auth-brand-name {
    font-family: var(--font-display);
    font-size: 2rem;
    font-weight: 800;
    color: var(--text-primary);
    margin-bottom: var(--space-sm);
}

.auth-brand-desc {
    font-size: 0.95rem;
    color: var(--text-secondary);
    line-height: 1.6;
    margin-bottom: var(--space-xl);
}

.auth-features {
    display: flex;
    flex-direction: column;
    gap: var(--space-md);
}

.auth-feature {
    display: flex;
    gap: 12px;
    align-items: flex-start;
}

.auth-feature-icon {
    font-size: 1.3rem;
    flex-shrink: 0;
    margin-top: 2px;
}

.auth-feature strong {
    display: block;
    font-size: 0.87rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 2px;
}

.auth-feature span {
    font-size: 0.8rem;
    color: var(--text-tertiary);
}

.auth-form-wrap {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--space-2xl);
}

.auth-form-inner {
    width: 100%;
    max-width: 400px;
}

.auth-tools {
    display: flex;
    gap: 6px;
    margin-bottom: var(--space-lg);
}

.auth-title {
    font-family: var(--font-display);
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: var(--space-sm);
}

.auth-subtitle {
    font-size: 0.87rem;
    color: var(--text-tertiary);
    margin-bottom: var(--space-lg);
}

.auth-subtitle a {
    color: var(--brand-primary);
    font-weight: 600;
}

.auth-form {
    display: flex;
    flex-direction: column;
    gap: var(--space-md);
}

.auth-footer {
    margin-top: var(--space-xl);
    text-align: center;
    font-size: 0.76rem;
    color: var(--text-muted);
}

/* ═══════════════════════════════════════════
   DASHBOARD — Sales Hero
   ═══════════════════════════════════════════ */
.sales-hero {
    display: grid;
    grid-template-columns: 1.2fr 0.8fr;
    gap: var(--space-xl);
    margin-bottom: var(--space-lg);
    padding: var(--space-xl);
    background: var(--bg-secondary);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-xl);
    position: relative;
    overflow: hidden;
}

.sales-hero::before {
    content: '';
    position: absolute;
    top: -40%;
    right: -20%;
    width: 60%;
    height: 180%;
    background: radial-gradient(ellipse, rgba(124,92,255,0.06) 0%, transparent 60%);
    pointer-events: none;
}

.sales-hero-title {
    font-family: var(--font-display);
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-primary);
    margin: var(--space-sm) 0 var(--space-sm);
    line-height: 1.3;
}

.sales-hero-desc {
    font-size: 0.9rem;
    color: var(--text-secondary);
    line-height: 1.6;
    margin-bottom: var(--space-md);
}

.sales-hero-actions {
    display: flex;
    gap: var(--space-sm);
    flex-wrap: wrap;
    margin-bottom: var(--space-lg);
}

.sales-kpi-grid {
    display: flex;
    gap: var(--space-xl);
}

.sales-kpi-item strong {
    display: block;
    font-family: var(--font-display);
    font-size: 1.3rem;
    font-weight: 700;
    color: var(--text-primary);
}

.sales-kpi-item span {
    font-size: 0.76rem;
    color: var(--text-tertiary);
}

.sales-hero-panel {
    position: relative;
    background: var(--bg-tertiary);
    border-radius: var(--radius-lg);
    padding: var(--space-lg);
}

.sales-hero-panel h3 {
    font-size: 1rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: var(--space-md);
}

.sales-hero-panel p {
    font-size: 0.85rem;
    color: var(--text-secondary);
    margin-bottom: var(--space-md);
}

/* Quick grid */
.quick-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
    gap: var(--space-md);
    margin-bottom: var(--space-lg);
}

.quick-card {
    background: var(--bg-secondary);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-lg);
    padding: var(--space-lg);
    text-align: center;
    text-decoration: none;
    transition: all var(--transition-normal);
}

.quick-card:hover {
    border-color: var(--brand-primary);
    transform: translateY(-3px);
    box-shadow: var(--shadow-glow);
}

.quick-card-icon { font-size: 1.8rem; margin-bottom: var(--space-sm); }
.quick-card-label { font-size: 0.87rem; font-weight: 600; color: var(--text-primary); margin-bottom: 4px; }
.quick-card-desc { font-size: 0.76rem; color: var(--text-tertiary); }

/* Credits badge */
.credits-badge {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    padding: 8px 14px;
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-full);
    font-size: 0.8rem;
    color: var(--text-secondary);
}

.credits-value {
    font-family: var(--font-display);
    font-weight: 700;
    color: var(--brand-primary);
}

/* ═══════════════════════════════════════════
   STUDIO
   ═══════════════════════════════════════════ */
.studio-shell {
    display: grid;
    grid-template-columns: 400px 1fr;
    gap: var(--space-lg);
    align-items: flex-start;
}

.studio-panel-wrap {
    background: var(--bg-secondary);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-lg);
    overflow: hidden;
}

.studio-tabs {
    display: flex;
    border-bottom: 1px solid var(--border-subtle);
}

.studio-tab-btn {
    flex: 1;
    padding: 12px 8px;
    font-size: 0.82rem;
    font-weight: 600;
    color: var(--text-tertiary);
    background: transparent;
    border: none;
    border-bottom: 2px solid transparent;
    cursor: pointer;
    transition: all var(--transition-fast);
    white-space: nowrap;
}

.studio-tab-btn:hover { color: var(--text-primary); background: var(--bg-hover); }
.studio-tab-btn.active { color: var(--brand-primary); border-bottom-color: var(--brand-primary); }

.studio-panel { display: none; padding: var(--space-lg); }
.studio-panel.is-active { display: block; }

.studio-section-title {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 4px;
}

.studio-section-note {
    font-size: 0.8rem;
    color: var(--text-tertiary);
    margin-bottom: var(--space-md);
}

.studio-module {
    margin-bottom: var(--space-md);
}

.studio-module-title {
    font-size: 0.8rem;
    font-weight: 700;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: var(--space-sm);
}

.studio-field {
    margin-bottom: var(--space-md);
}

.studio-label {
    display: block;
    font-size: 0.78rem;
    font-weight: 600;
    color: var(--text-secondary);
    margin-bottom: 6px;
}

.studio-input {
    width: 100%;
    padding: 9px 12px;
    font-family: var(--font-sans);
    font-size: 0.85rem;
    color: var(--text-primary);
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    outline: none;
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
    -webkit-appearance: none;
    resize: vertical;
}

.studio-input:focus {
    border-color: var(--brand-primary);
    box-shadow: 0 0 0 3px var(--brand-primary-muted);
}

.studio-input::placeholder { color: var(--text-muted); }

textarea.studio-input { min-height: 72px; }

.studio-hint {
    font-size: 0.76rem;
    color: var(--text-muted);
    margin-top: 6px;
}

/* Chips */
.studio-chip-grid {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
}

.studio-chip {
    padding: 6px 12px;
    font-size: 0.78rem;
    font-weight: 500;
    color: var(--text-secondary);
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-full);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.studio-chip:hover { border-color: var(--border-strong); color: var(--text-primary); }
.studio-chip.active { background: var(--brand-primary-muted); border-color: var(--brand-primary); color: var(--brand-primary); }

/* Ratio */
.studio-ratio-row {
    display: flex;
    gap: 6px;
}

.studio-ratio-btn {
    flex: 1;
    padding: 8px;
    font-size: 0.82rem;
    font-weight: 600;
    text-align: center;
    color: var(--text-secondary);
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.studio-ratio-btn:hover { border-color: var(--border-strong); }
.studio-ratio-btn.active { background: var(--brand-primary-muted); border-color: var(--brand-primary); color: var(--brand-primary); }

/* Grid helpers */
.studio-grid-2 {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-md);
}

.studio-slider-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-md);
}

/* Toggle switch */
.studio-switch {
    display: flex;
    align-items: center;
    gap: 10px;
    cursor: pointer;
}

.studio-switch input { display: none; }

.studio-switch-ui {
    width: 38px;
    height: 20px;
    background: var(--bg-active);
    border-radius: 10px;
    position: relative;
    transition: background var(--transition-fast);
    flex-shrink: 0;
}

.studio-switch-ui::after {
    content: '';
    width: 16px;
    height: 16px;
    background: #fff;
    border-radius: 50%;
    position: absolute;
    top: 2px;
    left: 2px;
    transition: transform var(--transition-fast);
}

.studio-switch input:checked + .studio-switch-ui {
    background: var(--brand-primary);
}

.studio-switch input:checked + .studio-switch-ui::after {
    transform: translateX(18px);
}

.studio-switch-label {
    font-size: 0.82rem;
    font-weight: 500;
    color: var(--text-secondary);
}

.studio-feature-toggle {
    margin-top: var(--space-sm);
}

.studio-advanced-toggle-row {
    padding: var(--space-md) 0;
    border-top: 1px solid var(--border-subtle);
    border-bottom: 1px solid var(--border-subtle);
}

/* Action */
.studio-form-actions {
    display: flex;
    gap: var(--space-sm);
    margin-top: var(--space-md);
}

.studio-action-btn {
    flex: 1;
}

/* Inline alert */
.studio-inline-alert {
    margin: var(--space-md) 0 0;
}

/* Stage (preview) */
.studio-stage {
    position: sticky;
    top: var(--space-lg);
}

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

.studio-stage-title {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--text-primary);
}

.studio-stage-subtitle {
    font-size: 0.8rem;
    color: var(--text-tertiary);
}

.studio-preview-card {
    background: var(--bg-secondary);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-lg);
    padding: var(--space-lg);
    min-height: 300px;
}

.studio-preview-card img {
    border-radius: var(--radius-md);
    max-width: 100%;
}

/* Upsell */
.studio-upsell {
    margin-top: var(--space-lg);
    padding: var(--space-lg);
    background: var(--bg-secondary);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-lg);
}

.studio-upsell h4 {
    font-size: 0.95rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 6px;
}

.studio-upsell p {
    font-size: 0.82rem;
    color: var(--text-tertiary);
    margin-bottom: var(--space-md);
}

.studio-upsell-grid {
    display: grid;
    gap: var(--space-sm);
}

.studio-upsell-item {
    padding: 10px 14px;
    background: var(--bg-tertiary);
    border-radius: var(--radius-md);
    font-size: 0.82rem;
    color: var(--text-secondary);
    border-left: 3px solid var(--brand-secondary);
}

/* Reference preview */
.studio-reference-preview {
    margin-top: 10px;
}

.studio-reference-thumb {
    width: 112px;
    height: 112px;
    border-radius: var(--radius-md);
    object-fit: cover;
    border: 1px solid var(--border-subtle);
}

.studio-reference-actions {
    margin-top: 8px;
    display: flex;
    gap: 8px;
    align-items: center;
}

.studio-reference-meta {
    font-size: 0.76rem;
    color: var(--text-muted);
}

/* Editor */
.studio-editor-wrap {
    position: relative;
}

.studio-editor-canvas-wrap {
    display: flex;
    justify-content: center;
    align-items: center;
}

.studio-editor-canvas {
    max-width: 100%;
    border-radius: var(--radius-md);
}

.studio-editor-meta {
    margin-top: var(--space-sm);
    font-size: 0.76rem;
    color: var(--text-muted);
    text-align: center;
}

/* Slider */
.studio-slider {
    width: 100%;
    height: 6px;
    appearance: none;
    -webkit-appearance: none;
    background: var(--bg-active);
    border-radius: 3px;
    outline: none;
    margin-top: 6px;
}

.studio-slider::-webkit-slider-thumb {
    appearance: none;
    -webkit-appearance: none;
    width: 16px;
    height: 16px;
    background: var(--brand-primary);
    border-radius: 50%;
    cursor: pointer;
    transition: transform var(--transition-fast);
}

.studio-slider::-webkit-slider-thumb:hover {
    transform: scale(1.2);
}

/* ═══════════════════════════════════════════
   ANIMATIONS
   ═══════════════════════════════════════════ */
@keyframes fadeIn {
    from { opacity: 0; transform: translateY(8px); }
    to { opacity: 1; transform: translateY(0); }
}

@keyframes slideUp {
    from { opacity: 0; transform: translateY(16px); }
    to { opacity: 1; transform: translateY(0); }
}

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.6; }
}

@keyframes spin {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

.animate-fadeIn { animation: fadeIn 0.4s ease forwards; }
.animate-slideUp { animation: slideUp 0.5s cubic-bezier(0.16, 1, 0.3, 1) forwards; }
.animate-pulse { animation: pulse 1.8s ease-in-out infinite; }

/* ═══════════════════════════════════════════
   RESPONSIVE
   ═══════════════════════════════════════════ */
@media (max-width: 1024px) {
    .studio-shell {
        grid-template-columns: 1fr;
    }
    .studio-stage {
        position: static;
    }
}

@media (max-width: 768px) {
    .app-sidebar,
    .sidebar,
    .admin-sidebar {
        transform: translateX(-100%);
    }

    .app-sidebar.is-open,
    .sidebar.is-open,
    .admin-sidebar.is-open {
        transform: translateX(0);
    }

    .sidebar-overlay.is-open {
        display: block;
    }

    .app-mobile-header,
    .mobile-topbar {
        display: flex;
    }

    .app-content,
    .main-content,
    .admin-main {
        margin-left: 0;
        padding: calc(var(--header-height) + var(--space-md)) var(--space-md) var(--space-xl);
    }

    .landing-hero {
        grid-template-columns: 1fr;
        padding: var(--space-xl) 0;
    }

    .landing-title {
        font-size: 1.8rem;
    }

    .landing-kpis {
        gap: var(--space-md);
    }

    .auth-container {
        grid-template-columns: 1fr;
    }

    .auth-brand {
        display: none;
    }

    .sales-hero {
        grid-template-columns: 1fr;
    }

    .stats-grid {
        grid-template-columns: 1fr 1fr;
    }

    .quick-grid {
        grid-template-columns: 1fr 1fr;
    }

    .landing-pricing-grid {
        grid-template-columns: 1fr;
    }

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

    .studio-slider-grid {
        grid-template-columns: 1fr;
    }

    .studio-grid-2 {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 480px) {
    .stats-grid { grid-template-columns: 1fr; }
    .quick-grid { grid-template-columns: 1fr; }
    .landing-hero-actions { flex-direction: column; }
    .sales-hero-actions { flex-direction: column; }
    .sales-kpi-grid { flex-direction: column; gap: var(--space-md); }
}

/* ═══════════════════════════════════════════
   SCROLLBAR
   ═══════════════════════════════════════════ */
::-webkit-scrollbar { width: 6px; height: 6px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--bg-active); border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: var(--text-muted); }

/* ═══════════════════════════════════════════
   SELECTION
   ═══════════════════════════════════════════ */
::selection {
    background: var(--brand-primary-muted);
    color: var(--brand-primary);
}