/* =============================================
   ASSIGN AUTOMATE SYSTEM - Design System
   Premium Dark Mode Theme
   ============================================= */

:root {
    /* Colors */
    --bg-dark: #0a0e1a;
    --bg-card: #111827;
    --bg-card-hover: #1a2332;
    --bg-sidebar: #0d1117;
    --bg-input: #1e293b;
    --bg-overlay: rgba(0,0,0,0.6);
    
    --accent-primary: #6366f1;
    --accent-primary-hover: #818cf8;
    --accent-secondary: #06b6d4;
    --accent-success: #10b981;
    --accent-warning: #f59e0b;
    --accent-danger: #ef4444;
    --accent-info: #3b82f6;
    
    --gradient-primary: linear-gradient(135deg, #6366f1, #8b5cf6);
    --gradient-accent: linear-gradient(135deg, #06b6d4, #3b82f6);
    --gradient-success: linear-gradient(135deg, #10b981, #059669);
    --gradient-warm: linear-gradient(135deg, #f59e0b, #ef4444);
    
    --text-primary: #f1f5f9;
    --text-secondary: #94a3b8;
    --text-muted: #64748b;
    --text-accent: #a5b4fc;
    
    --border-color: #1e293b;
    --border-hover: #334155;
    
    --shadow-sm: 0 1px 3px rgba(0,0,0,0.3);
    --shadow-md: 0 4px 12px rgba(0,0,0,0.4);
    --shadow-lg: 0 8px 32px rgba(0,0,0,0.5);
    --shadow-glow: 0 0 20px rgba(99,102,241,0.15);
    
    --radius-sm: 6px;
    --radius-md: 10px;
    --radius-lg: 16px;
    --radius-xl: 24px;
    
    --sidebar-width: 260px;
    --topbar-height: 64px;
    
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-fast: all 0.15s ease;
}

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

html {
    font-size: 14px;
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    background: var(--bg-dark);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
    min-height: 100vh;
}

.hidden { display: none !important; }

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

/* =============================================
   LOGIN SCREEN
   ============================================= */
.login-screen {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg-dark);
    position: relative;
    overflow: hidden;
}

.login-screen::before {
    content: '';
    position: absolute;
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, rgba(99,102,241,0.15) 0%, transparent 70%);
    top: -200px;
    right: -200px;
    animation: float 8s ease-in-out infinite;
}

.login-screen::after {
    content: '';
    position: absolute;
    width: 400px;
    height: 400px;
    background: radial-gradient(circle, rgba(6,182,212,0.1) 0%, transparent 70%);
    bottom: -100px;
    left: -100px;
    animation: float 10s ease-in-out infinite reverse;
}

@keyframes float {
    0%, 100% { transform: translateY(0) rotate(0deg); }
    50% { transform: translateY(-30px) rotate(5deg); }
}

.login-container {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-xl);
    padding: 48px 40px;
    width: 100%;
    max-width: 420px;
    box-shadow: var(--shadow-lg), var(--shadow-glow);
    position: relative;
    z-index: 10;
    animation: slideUp 0.6s ease-out;
}

@keyframes slideUp {
    from { opacity: 0; transform: translateY(30px); }
    to { opacity: 1; transform: translateY(0); }
}

.login-header {
    text-align: center;
    margin-bottom: 36px;
}

.logo-circle {
    width: 72px;
    height: 72px;
    background: var(--gradient-primary);
    border-radius: 50%;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 20px;
    box-shadow: 0 4px 20px rgba(99,102,241,0.3);
}

.logo-text {
    font-size: 1.6rem;
    font-weight: 800;
    color: white;
    letter-spacing: 2px;
}

.login-title {
    font-size: 1.8rem;
    font-weight: 800;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    letter-spacing: 2px;
}

.login-subtitle {
    color: var(--text-secondary);
    font-size: 0.9rem;
    margin-top: 6px;
}

.login-form { margin-bottom: 20px; }

.input-group {
    margin-bottom: 20px;
}

.input-group label {
    display: block;
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--text-secondary);
    margin-bottom: 8px;
}

.input-group input,
.input-group select,
.input-group textarea {
    width: 100%;
    padding: 12px 16px;
    background: var(--bg-input);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    color: var(--text-primary);
    font-size: 0.95rem;
    font-family: inherit;
    transition: var(--transition);
    outline: none;
}

.input-group input:focus,
.input-group select:focus,
.input-group textarea:focus {
    border-color: var(--accent-primary);
    box-shadow: 0 0 0 3px rgba(99,102,241,0.15);
}

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

.login-hint {
    text-align: center;
    font-size: 0.8rem;
    color: var(--text-muted);
}

.login-hint code {
    background: var(--bg-input);
    padding: 2px 8px;
    border-radius: 4px;
    color: var(--accent-primary);
}

/* =============================================
   BUTTONS
   ============================================= */
.btn-primary {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 12px 24px;
    background: var(--gradient-primary);
    color: white;
    border: none;
    border-radius: var(--radius-md);
    font-size: 0.95rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    font-family: inherit;
    white-space: nowrap;
}

.btn-primary:hover {
    transform: translateY(-1px);
    box-shadow: 0 4px 15px rgba(99,102,241,0.4);
}

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

.btn-secondary {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 10px 20px;
    background: var(--bg-input);
    color: var(--text-primary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    font-size: 0.9rem;
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition);
    font-family: inherit;
    white-space: nowrap;
}

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

.btn-success {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 10px 20px;
    background: var(--gradient-success);
    color: white;
    border: none;
    border-radius: var(--radius-md);
    font-size: 0.9rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    font-family: inherit;
}

.btn-success:hover {
    transform: translateY(-1px);
    box-shadow: 0 4px 15px rgba(16,185,129,0.4);
}

.btn-danger {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 10px 20px;
    background: var(--accent-danger);
    color: white;
    border: none;
    border-radius: var(--radius-md);
    font-size: 0.9rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    font-family: inherit;
}

.btn-danger:hover { opacity: 0.9; }

.btn-sm {
    padding: 6px 14px;
    font-size: 0.8rem;
}

.btn-full { width: 100%; }

.btn-icon {
    width: 36px;
    height: 36px;
    padding: 0;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    background: var(--bg-input);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    color: var(--text-secondary);
    cursor: pointer;
    transition: var(--transition);
}

.btn-icon:hover {
    border-color: var(--accent-primary);
    color: var(--accent-primary);
}

/* =============================================
   LAYOUT
   ============================================= */
.main-app {
    display: flex;
    min-height: 100vh;
}

/* Sidebar */
.sidebar {
    width: var(--sidebar-width);
    background: var(--bg-sidebar);
    border-right: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
    position: fixed;
    top: 0;
    left: 0;
    bottom: 0;
    z-index: 100;
    transition: var(--transition);
}

.sidebar-header {
    padding: 24px 20px;
    display: flex;
    align-items: center;
    gap: 12px;
    border-bottom: 1px solid var(--border-color);
}

.logo-sm {
    width: 40px;
    height: 40px;
    background: var(--gradient-primary);
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.logo-sm span {
    font-weight: 800;
    font-size: 0.9rem;
    color: white;
    letter-spacing: 1px;
}

.sidebar-header h2 {
    font-size: 1rem;
    font-weight: 700;
    letter-spacing: 2px;
    line-height: 1.2;
}

.sidebar-header h2 small {
    font-size: 0.65rem;
    font-weight: 400;
    color: var(--text-muted);
    letter-spacing: 3px;
}

.nav-menu {
    list-style: none;
    padding: 16px 12px;
    flex: 1;
    overflow-y: auto;
}

.nav-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 16px;
    border-radius: var(--radius-md);
    color: var(--text-secondary);
    cursor: pointer;
    transition: var(--transition);
    font-size: 0.9rem;
    font-weight: 500;
    margin-bottom: 4px;
}

.nav-item:hover {
    background: var(--bg-card-hover);
    color: var(--text-primary);
}

.nav-item.active {
    background: rgba(99,102,241,0.1);
    color: var(--accent-primary);
}

.nav-item.active svg { stroke: var(--accent-primary); }

.sidebar-footer {
    padding: 16px 12px;
    border-top: 1px solid var(--border-color);
}

.btn-logout {
    display: flex;
    align-items: center;
    gap: 10px;
    width: 100%;
    padding: 10px 16px;
    background: transparent;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    color: var(--text-secondary);
    cursor: pointer;
    font-family: inherit;
    font-size: 0.85rem;
    transition: var(--transition);
}

.btn-logout:hover {
    border-color: var(--accent-danger);
    color: var(--accent-danger);
}

/* Main Content */
.main-content {
    flex: 1;
    margin-left: var(--sidebar-width);
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

.top-bar {
    height: var(--topbar-height);
    background: var(--bg-card);
    border-bottom: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    padding: 0 24px;
    gap: 16px;
    position: sticky;
    top: 0;
    z-index: 50;
}

.menu-toggle {
    display: none;
    background: none;
    border: none;
    color: var(--text-primary);
    cursor: pointer;
    padding: 4px;
}

.section-title {
    font-size: 1.2rem;
    font-weight: 700;
    flex: 1;
}

.badge {
    padding: 4px 12px;
    background: rgba(99,102,241,0.15);
    color: var(--accent-primary);
    border-radius: 20px;
    font-size: 0.75rem;
    font-weight: 600;
    letter-spacing: 1px;
    text-transform: uppercase;
}

.content-area {
    flex: 1;
    padding: 24px;
    overflow-y: auto;
}

/* =============================================
   CARDS
   ============================================= */
.card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 24px;
    transition: var(--transition);
}

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

.card-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 20px;
}

.card-title {
    font-size: 1.05rem;
    font-weight: 600;
}

.card-subtitle {
    font-size: 0.8rem;
    color: var(--text-muted);
    margin-top: 4px;
}

/* Stat Cards */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 16px;
    margin-bottom: 24px;
}

.stat-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 20px 24px;
    display: flex;
    align-items: center;
    gap: 16px;
    transition: var(--transition);
}

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

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

.stat-icon.purple { background: rgba(99,102,241,0.15); color: var(--accent-primary); }
.stat-icon.cyan { background: rgba(6,182,212,0.15); color: var(--accent-secondary); }
.stat-icon.green { background: rgba(16,185,129,0.15); color: var(--accent-success); }
.stat-icon.amber { background: rgba(245,158,11,0.15); color: var(--accent-warning); }

.stat-value {
    font-size: 1.8rem;
    font-weight: 800;
    line-height: 1;
}

.stat-label {
    font-size: 0.8rem;
    color: var(--text-muted);
    margin-top: 4px;
}

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

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

.data-table thead {
    background: var(--bg-input);
    position: sticky;
    top: 0;
    z-index: 5;
}

.data-table th {
    padding: 12px 16px;
    text-align: left;
    font-weight: 600;
    color: var(--text-secondary);
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    white-space: nowrap;
    border-bottom: 1px solid var(--border-color);
}

.data-table td {
    padding: 10px 16px;
    border-bottom: 1px solid var(--border-color);
    white-space: nowrap;
}

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

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

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

/* Row types for hierarchy */
.row-level-1 { background: rgba(99,102,241,0.05); }
.row-level-2 { background: rgba(6,182,212,0.05); }
.row-level-2 td:first-child { padding-left: 20px; }
.row-level-3 td:first-child { padding-left: 36px; }
.row-level-4 td:first-child { padding-left: 52px; }
.row-level-5 td:first-child { padding-left: 68px; }

.row-manual {
    background: rgba(245,158,11,0.06) !important;
}

.row-modified {
    border-left: 3px solid var(--accent-warning);
}

.login-badge {
    display: inline-block;
    padding: 2px 8px;
    border-radius: 4px;
    font-family: 'Fira Mono', monospace;
    font-size: 0.8rem;
    font-weight: 600;
}

.login-badge.source { background: rgba(16,185,129,0.15); color: var(--accent-success); }
.login-badge.manual { background: rgba(245,158,11,0.15); color: var(--accent-warning); }

/* Editable cells */
.cell-edit {
    width: 100%;
    padding: 4px 8px;
    background: var(--bg-input);
    border: 1px solid var(--border-color);
    border-radius: 4px;
    color: var(--text-primary);
    font-family: inherit;
    font-size: 0.85rem;
    transition: var(--transition-fast);
}

.cell-edit:focus {
    border-color: var(--accent-primary);
    outline: none;
}

.cell-edit.error {
    border-color: var(--accent-danger);
    background: rgba(239,68,68,0.05);
}

.cell-select {
    padding: 4px 8px;
    background: var(--bg-input);
    border: 1px solid var(--border-color);
    border-radius: 4px;
    color: var(--text-primary);
    font-family: inherit;
    font-size: 0.85rem;
}

/* =============================================
   FORMS & MODALS
   ============================================= */
.form-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 16px;
}

.form-actions {
    display: flex;
    gap: 12px;
    margin-top: 20px;
    flex-wrap: wrap;
}

.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--bg-overlay);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
    animation: fadeIn 0.2s ease;
}

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

.modal-content {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 32px;
    max-width: 520px;
    width: 90%;
    max-height: 80vh;
    overflow-y: auto;
    box-shadow: var(--shadow-lg);
    animation: slideUp 0.3s ease;
}

.modal-title {
    font-size: 1.2rem;
    font-weight: 700;
    margin-bottom: 20px;
}

/* File upload */
.file-drop {
    border: 2px dashed var(--border-hover);
    border-radius: var(--radius-lg);
    padding: 40px;
    text-align: center;
    cursor: pointer;
    transition: var(--transition);
    position: relative;
}

.file-drop:hover,
.file-drop.dragover {
    border-color: var(--accent-primary);
    background: rgba(99,102,241,0.05);
}

.file-drop input[type="file"] {
    position: absolute;
    inset: 0;
    opacity: 0;
    cursor: pointer;
}

.file-drop-icon {
    font-size: 2.5rem;
    margin-bottom: 12px;
}

.file-drop-text {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.file-drop-text strong {
    color: var(--accent-primary);
}

/* Tags / Chips */
.chip {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 4px 12px;
    background: var(--bg-input);
    border: 1px solid var(--border-color);
    border-radius: 20px;
    font-size: 0.75rem;
    font-weight: 500;
    color: var(--text-secondary);
}

.chip.active {
    background: rgba(99,102,241,0.15);
    border-color: var(--accent-primary);
    color: var(--accent-primary);
}

/* Zone cards */
.zone-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 16px;
}

.zone-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 20px;
    transition: var(--transition);
    cursor: pointer;
}

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

.zone-letter {
    width: 44px;
    height: 44px;
    background: var(--gradient-primary);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    font-weight: 800;
    color: white;
    margin-bottom: 12px;
}

.zone-name {
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: 4px;
}

.zone-meta {
    font-size: 0.8rem;
    color: var(--text-muted);
}

/* Subzone list */
.subzone-list {
    list-style: none;
    margin-top: 12px;
}

.subzone-item {
    padding: 8px 12px;
    background: var(--bg-input);
    border-radius: var(--radius-sm);
    margin-bottom: 6px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    font-size: 0.85rem;
}

/* Tabs */
.tabs {
    display: flex;
    gap: 4px;
    margin-bottom: 20px;
    background: var(--bg-input);
    padding: 4px;
    border-radius: var(--radius-md);
    overflow-x: auto;
}

.tab-btn {
    padding: 8px 20px;
    background: transparent;
    border: none;
    border-radius: var(--radius-sm);
    color: var(--text-secondary);
    font-family: inherit;
    font-size: 0.85rem;
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition-fast);
    white-space: nowrap;
}

.tab-btn:hover {
    color: var(--text-primary);
}

.tab-btn.active {
    background: var(--accent-primary);
    color: white;
}

/* =============================================
   TOAST NOTIFICATIONS
   ============================================= */
.toast-container {
    position: fixed;
    top: 24px;
    right: 24px;
    z-index: 9999;
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.toast {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 14px 20px;
    min-width: 300px;
    max-width: 420px;
    box-shadow: var(--shadow-lg);
    animation: toastIn 0.3s ease;
    display: flex;
    align-items: center;
    gap: 12px;
}

.toast.success { border-left: 4px solid var(--accent-success); }
.toast.error { border-left: 4px solid var(--accent-danger); }
.toast.info { border-left: 4px solid var(--accent-info); }
.toast.warning { border-left: 4px solid var(--accent-warning); }

.toast-message {
    flex: 1;
    font-size: 0.85rem;
}

@keyframes toastIn {
    from { opacity: 0; transform: translateX(40px); }
    to { opacity: 1; transform: translateX(0); }
}

/* =============================================
   THIRD PARTY VIEW
   ============================================= */
.third-party-view {
    min-height: 100vh;
    background: var(--bg-dark);
    padding: 24px;
}

.tp-header {
    text-align: center;
    margin-bottom: 32px;
}

.tp-title {
    font-size: 1.5rem;
    font-weight: 800;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.tp-subtitle {
    color: var(--text-muted);
    font-size: 0.9rem;
    margin-top: 4px;
}

/* =============================================
   UTILITIES
   ============================================= */
.flex { display: flex; }
.flex-col { flex-direction: column; }
.items-center { align-items: center; }
.justify-between { justify-content: space-between; }
.gap-8 { gap: 8px; }
.gap-12 { gap: 12px; }
.gap-16 { gap: 16px; }
.gap-24 { gap: 24px; }
.mt-12 { margin-top: 12px; }
.mt-16 { margin-top: 16px; }
.mt-24 { margin-top: 24px; }
.mb-12 { margin-bottom: 12px; }
.mb-16 { margin-bottom: 16px; }
.mb-24 { margin-bottom: 24px; }
.p-16 { padding: 16px; }
.text-center { text-align: center; }
.text-right { text-align: right; }
.text-sm { font-size: 0.8rem; }
.text-xs { font-size: 0.7rem; }
.text-muted { color: var(--text-muted); }
.text-success { color: var(--accent-success); }
.text-danger { color: var(--accent-danger); }
.text-warning { color: var(--accent-warning); }
.text-accent { color: var(--accent-primary); }
.font-bold { font-weight: 700; }
.font-mono { font-family: 'Fira Mono', 'Courier New', monospace; }
.w-full { width: 100%; }
.truncate { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }

.empty-state {
    text-align: center;
    padding: 60px 24px;
    color: var(--text-muted);
}

.empty-state-icon {
    font-size: 3rem;
    margin-bottom: 16px;
    opacity: 0.5;
}

.empty-state p {
    max-width: 400px;
    margin: 0 auto;
    line-height: 1.6;
}

/* Progress bar */
.progress-bar {
    height: 6px;
    background: var(--bg-input);
    border-radius: 3px;
    overflow: hidden;
    margin-top: 8px;
}

.progress-fill {
    height: 100%;
    background: var(--gradient-primary);
    border-radius: 3px;
    transition: width 0.5s ease;
}

/* =============================================
   RESPONSIVE
   ============================================= */
@media (max-width: 768px) {
    .sidebar {
        transform: translateX(-100%);
    }
    
    .sidebar.open {
        transform: translateX(0);
    }
    
    .main-content {
        margin-left: 0;
    }
    
    .menu-toggle {
        display: block;
    }
    
    .content-area {
        padding: 16px;
    }
    
    .stats-grid {
        grid-template-columns: 1fr 1fr;
    }
    
    .form-grid {
        grid-template-columns: 1fr;
    }
    
    .login-container {
        margin: 16px;
        padding: 32px 24px;
    }
}

@media (max-width: 480px) {
    .stats-grid {
        grid-template-columns: 1fr;
    }
}

/* Loading spinner */
.spinner {
    width: 32px;
    height: 32px;
    border: 3px solid var(--border-color);
    border-top-color: var(--accent-primary);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
    margin: 40px auto;
}

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

/* Info callout */
.callout {
    padding: 16px 20px;
    border-radius: var(--radius-md);
    font-size: 0.85rem;
    line-height: 1.6;
    margin-bottom: 16px;
}

.callout.info {
    background: rgba(59,130,246,0.1);
    border: 1px solid rgba(59,130,246,0.2);
    color: var(--accent-info);
}

.callout.warning {
    background: rgba(245,158,11,0.1);
    border: 1px solid rgba(245,158,11,0.2);
    color: var(--accent-warning);
}

.callout.success {
    background: rgba(16,185,129,0.1);
    border: 1px solid rgba(16,185,129,0.2);
    color: var(--accent-success);
}

/* Checkbox custom */
.checkbox-label {
    display: flex;
    align-items: center;
    gap: 8px;
    cursor: pointer;
    font-size: 0.85rem;
    padding: 4px 0;
}

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

/* Link copy box */
.link-box {
    display: flex;
    align-items: center;
    gap: 8px;
    background: var(--bg-input);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 8px 12px;
    margin-top: 8px;
}

.link-box input {
    flex: 1;
    background: transparent;
    border: none;
    color: var(--text-accent);
    font-family: 'Fira Mono', monospace;
    font-size: 0.8rem;
    outline: none;
}

/* Spinner Animation */
@keyframes spin { 100% { transform: rotate(360deg); } }
.animate-spin { animation: spin 1s linear infinite; transform-origin: center; display: inline-block; }
.spinner { width: 30px; height: 30px; border: 3px solid rgba(255,255,255,0.3); border-radius: 50%; border-top-color: var(--accent-primary); animation: spin 1s ease-in-out infinite; margin: 20px auto; }