/* EntegreSmart CRM - Ana Stil Dosyası */
@import url('https://fonts.googleapis.com/css2?family=Plus+Jakarta+Sans:wght@300;400;500;600;700&display=swap');

/* CSS Variables - Light Mode (default) */
:root {
    --font: 'Plus Jakarta Sans', 'Segoe UI Variable', 'Segoe UI', -apple-system, BlinkMacSystemFont, sans-serif;
    
    /* Light Mode Colors */
    --bg-primary: #F8F9FC;
    --bg-secondary: #FFFFFF;
    --bg-tertiary: #F1F3F9;
    --bg-sidebar: #FFFFFF;
    --bg-card: #FFFFFF;
    --bg-hover: #F1F5FF;
    --bg-active: #E8EFFF;
    
    --text-primary: #1A1D2E;
    --text-secondary: #6B7280;
    --text-muted: #9CA3AF;
    --text-inverse: #FFFFFF;
    
    --border: #E5E7EB;
    --border-light: #F3F4F6;
    
    --accent: #4F8EF7;
    --accent-dark: #3B82F6;
    --accent-light: #EFF6FF;
    --accent-gradient: linear-gradient(135deg, #4F8EF7 0%, #7C3AED 100%);
    
    --success: #10B981;
    --success-light: #ECFDF5;
    --warning: #F59E0B;
    --warning-light: #FFFBEB;
    --danger: #EF4444;
    --danger-light: #FEF2F2;
    --info: #6366F1;
    --info-light: #EEF2FF;
    --purple: #7C3AED;
    --purple-light: #F5F3FF;
    
    --shadow-sm: 0 1px 3px rgba(0,0,0,0.06), 0 1px 2px rgba(0,0,0,0.04);
    --shadow: 0 4px 16px rgba(0,0,0,0.08), 0 2px 6px rgba(0,0,0,0.04);
    --shadow-lg: 0 10px 40px rgba(0,0,0,0.12), 0 4px 16px rgba(0,0,0,0.06);
    --shadow-accent: 0 4px 20px rgba(79,142,247,0.3);
    
    --sidebar-width: 260px;
    --topbar-height: 64px;
    --radius: 12px;
    --radius-sm: 8px;
    --radius-lg: 16px;
    --transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Dark Mode */
[data-theme="dark"] {
    --bg-primary: #0F1117;
    --bg-secondary: #1A1D2E;
    --bg-tertiary: #222538;
    --bg-sidebar: #13151F;
    --bg-card: #1A1D2E;
    --bg-hover: #222538;
    --bg-active: #2A2F4A;
    
    --text-primary: #F1F5F9;
    --text-secondary: #94A3B8;
    --text-muted: #64748B;
    --text-inverse: #0F1117;
    
    --border: #2D3148;
    --border-light: #252840;
    
    --accent-light: #1E2A4A;
    --success-light: #0F2A1E;
    --warning-light: #2A200F;
    --danger-light: #2A0F0F;
    --info-light: #1A1E3A;
    --purple-light: #1E1030;
    
    --shadow-sm: 0 1px 3px rgba(0,0,0,0.3), 0 1px 2px rgba(0,0,0,0.2);
    --shadow: 0 4px 16px rgba(0,0,0,0.4), 0 2px 6px rgba(0,0,0,0.2);
    --shadow-lg: 0 10px 40px rgba(0,0,0,0.5), 0 4px 16px rgba(0,0,0,0.3);
}

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

body {
    font-family: var(--font);
    background: var(--bg-primary);
    color: var(--text-primary);
    font-size: 14px;
    line-height: 1.6;
    transition: background 0.3s ease, color 0.3s ease;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* Login Page */
.login-page {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg-primary);
    position: relative;
    overflow: hidden;
}

.login-page::before {
    content: '';
    position: absolute;
    width: 600px; height: 600px;
    background: radial-gradient(circle, rgba(79,142,247,0.12) 0%, transparent 70%);
    top: -200px; right: -200px;
    pointer-events: none;
}

.login-page::after {
    content: '';
    position: absolute;
    width: 400px; height: 400px;
    background: radial-gradient(circle, rgba(124,58,237,0.1) 0%, transparent 70%);
    bottom: -100px; left: -100px;
    pointer-events: none;
}

.login-card {
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: 24px;
    padding: 48px;
    width: 100%;
    max-width: 420px;
    box-shadow: var(--shadow-lg);
    position: relative;
    z-index: 1;
}

.login-logo {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 36px;
}

.login-logo-icon {
    width: 48px; height: 48px;
    background: var(--accent-gradient);
    border-radius: 14px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 22px;
    box-shadow: var(--shadow-accent);
}

.login-logo h1 {
    font-size: 20px;
    font-weight: 700;
    color: var(--text-primary);
}

.login-logo span {
    font-size: 11px;
    color: var(--text-muted);
    display: block;
    font-weight: 400;
}

.login-title {
    font-size: 26px;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 6px;
}

.login-subtitle {
    color: var(--text-secondary);
    margin-bottom: 32px;
    font-size: 14px;
}

/* Layout */
.app-layout {
    display: flex;
    min-height: 100vh;
}

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

.sidebar-header {
    padding: 20px 20px 16px;
    border-bottom: 1px solid var(--border-light);
}

.sidebar-logo {
    display: flex;
    align-items: center;
    gap: 10px;
}

.sidebar-logo-icon {
    width: 38px; height: 38px;
    background: var(--accent-gradient);
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 18px;
    flex-shrink: 0;
    box-shadow: var(--shadow-accent);
}

.sidebar-logo-text h2 {
    font-size: 14px;
    font-weight: 700;
    line-height: 1.2;
    color: var(--text-primary);
}

.sidebar-logo-text span {
    font-size: 10px;
    color: var(--text-muted);
    font-weight: 400;
}

.sidebar-nav {
    flex: 1;
    overflow-y: auto;
    padding: 12px 12px;
    scrollbar-width: thin;
    scrollbar-color: var(--border) transparent;
}

.nav-section-label {
    font-size: 10px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--text-muted);
    padding: 16px 8px 6px;
}

.nav-item {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 9px 12px;
    border-radius: var(--radius-sm);
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 13.5px;
    font-weight: 500;
    transition: var(--transition);
    margin-bottom: 2px;
    position: relative;
}

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

.nav-item.active {
    background: var(--accent-light);
    color: var(--accent);
    font-weight: 600;
}

.nav-item.active::before {
    content: '';
    position: absolute;
    left: 0; top: 50%;
    transform: translateY(-50%);
    width: 3px; height: 20px;
    background: var(--accent);
    border-radius: 0 3px 3px 0;
}

.nav-item .nav-icon {
    width: 20px; height: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 16px;
    flex-shrink: 0;
}

.nav-badge {
    margin-left: auto;
    background: var(--danger);
    color: white;
    font-size: 10px;
    font-weight: 700;
    padding: 1px 6px;
    border-radius: 20px;
    min-width: 18px;
    text-align: center;
}

/* Sidebar Footer */
.sidebar-footer {
    padding: 12px;
    border-top: 1px solid var(--border-light);
}

.sidebar-user {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 10px;
    border-radius: var(--radius-sm);
    transition: var(--transition);
    cursor: pointer;
}

.sidebar-user:hover { background: var(--bg-hover); }

.user-avatar {
    width: 36px; height: 36px;
    border-radius: 10px;
    background: var(--accent-gradient);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 14px;
    font-weight: 700;
    flex-shrink: 0;
}

.user-info { flex: 1; min-width: 0; }
.user-name {
    font-size: 13px;
    font-weight: 600;
    color: var(--text-primary);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}
.user-role {
    font-size: 11px;
    color: var(--text-muted);
}

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

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

.topbar-title {
    font-size: 16px;
    font-weight: 700;
    color: var(--text-primary);
    flex: 1;
}

.topbar-actions {
    display: flex;
    align-items: center;
    gap: 8px;
}

/* Theme Toggle */
.theme-toggle {
    width: 36px; height: 36px;
    border-radius: var(--radius-sm);
    border: 1px solid var(--border);
    background: var(--bg-tertiary);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 16px;
    transition: var(--transition);
    color: var(--text-secondary);
}

.theme-toggle:hover {
    background: var(--bg-hover);
    color: var(--text-primary);
}

/* Notification Bell */
.notif-btn {
    width: 36px; height: 36px;
    border-radius: var(--radius-sm);
    border: 1px solid var(--border);
    background: var(--bg-tertiary);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 16px;
    transition: var(--transition);
    color: var(--text-secondary);
    position: relative;
}

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

.notif-dot {
    position: absolute;
    top: 6px; right: 6px;
    width: 8px; height: 8px;
    background: var(--danger);
    border-radius: 50%;
    border: 2px solid var(--bg-secondary);
}

/* Page Content */
.page-content {
    padding: 24px;
    flex: 1;
}

/* Cards */
.card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    box-shadow: var(--shadow-sm);
    overflow: hidden;
}

.card-header {
    padding: 18px 20px;
    border-bottom: 1px solid var(--border);
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
}

.card-title {
    font-size: 15px;
    font-weight: 700;
    color: var(--text-primary);
}

.card-subtitle {
    font-size: 12px;
    color: var(--text-muted);
    margin-top: 2px;
}

.card-body { padding: 20px; }

/* Stats Grid */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 16px;
    margin-bottom: 24px;
}

.stat-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 20px;
    display: flex;
    align-items: flex-start;
    gap: 16px;
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
}

.stat-card:hover {
    box-shadow: var(--shadow);
    transform: translateY(-1px);
}

.stat-icon {
    width: 48px; height: 48px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 22px;
    flex-shrink: 0;
}

.stat-info h3 {
    font-size: 26px;
    font-weight: 700;
    line-height: 1;
    margin-bottom: 4px;
}

.stat-info p {
    font-size: 12px;
    color: var(--text-secondary);
    font-weight: 500;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 8px 16px;
    border-radius: var(--radius-sm);
    font-size: 13.5px;
    font-weight: 600;
    font-family: var(--font);
    border: none;
    cursor: pointer;
    transition: var(--transition);
    text-decoration: none;
    white-space: nowrap;
}

.btn-primary {
    background: var(--accent-gradient);
    color: white;
    box-shadow: var(--shadow-accent);
}

.btn-primary:hover { opacity: 0.9; transform: translateY(-1px); box-shadow: 0 6px 24px rgba(79,142,247,0.4); }

.btn-secondary {
    background: var(--bg-tertiary);
    color: var(--text-primary);
    border: 1px solid var(--border);
}

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

.btn-success { background: var(--success); color: white; }
.btn-danger { background: var(--danger); color: white; }
.btn-warning { background: var(--warning); color: white; }

.btn-sm { padding: 5px 12px; font-size: 12px; }
.btn-lg { padding: 12px 24px; font-size: 15px; }
.btn-icon { padding: 8px; }

/* Form Controls */
.form-group { margin-bottom: 18px; }

.form-label {
    display: block;
    font-size: 13px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 6px;
}

.form-control, .form-select {
    width: 100%;
    padding: 10px 14px;
    border: 1.5px solid var(--border);
    border-radius: var(--radius-sm);
    background: var(--bg-secondary);
    color: var(--text-primary);
    font-size: 14px;
    font-family: var(--font);
    transition: var(--transition);
    outline: none;
}

.form-control:focus, .form-select:focus {
    border-color: var(--accent);
    box-shadow: 0 0 0 3px rgba(79,142,247,0.12);
}

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

textarea.form-control {
    resize: vertical;
    min-height: 100px;
}

/* Table */
.table-wrapper {
    overflow-x: auto;
}

table {
    width: 100%;
    border-collapse: collapse;
}

thead th {
    padding: 11px 16px;
    font-size: 11.5px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    color: var(--text-muted);
    background: var(--bg-tertiary);
    border-bottom: 1px solid var(--border);
    text-align: left;
    white-space: nowrap;
}

tbody td {
    padding: 13px 16px;
    border-bottom: 1px solid var(--border-light);
    color: var(--text-primary);
    font-size: 13.5px;
    vertical-align: middle;
}

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

/* Badges */
.badge {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    padding: 3px 10px;
    border-radius: 20px;
    font-size: 11.5px;
    font-weight: 600;
}

.badge-success { background: var(--success-light); color: var(--success); }
.badge-warning { background: var(--warning-light); color: #B45309; }
.badge-danger { background: var(--danger-light); color: var(--danger); }
.badge-info { background: var(--info-light); color: var(--info); }
.badge-purple { background: var(--purple-light); color: var(--purple); }
.badge-secondary { background: var(--bg-tertiary); color: var(--text-secondary); }

/* Grid Layout */
.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.grid-12 { display: grid; grid-template-columns: 1fr 2fr; gap: 24px; }

/* Modal */
.modal-overlay {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(0,0,0,0.5);
    backdrop-filter: blur(4px);
    z-index: 1000;
    align-items: center;
    justify-content: center;
    padding: 20px;
}

.modal-overlay.active { display: flex; }

.modal {
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    width: 100%;
    max-width: 560px;
    max-height: 90vh;
    overflow-y: auto;
    box-shadow: var(--shadow-lg);
    animation: modalIn 0.25s cubic-bezier(0.34, 1.56, 0.64, 1);
}

@keyframes modalIn {
    from { opacity: 0; transform: scale(0.92) translateY(10px); }
    to { opacity: 1; transform: scale(1) translateY(0); }
}

.modal-header {
    padding: 20px 24px;
    border-bottom: 1px solid var(--border);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.modal-title { font-size: 16px; font-weight: 700; }

.modal-close {
    width: 32px; height: 32px;
    border-radius: 8px;
    border: none;
    background: var(--bg-tertiary);
    color: var(--text-secondary);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 18px;
    transition: var(--transition);
}

.modal-close:hover { background: var(--danger-light); color: var(--danger); }

.modal-body { padding: 24px; }

.modal-footer {
    padding: 16px 24px;
    border-top: 1px solid var(--border);
    display: flex;
    align-items: center;
    justify-content: flex-end;
    gap: 10px;
}

/* Calendar */
.calendar-grid {
    display: grid;
    grid-template-columns: repeat(7, 1fr);
    gap: 4px;
}

.cal-day-header {
    text-align: center;
    font-size: 11px;
    font-weight: 700;
    text-transform: uppercase;
    color: var(--text-muted);
    padding: 8px 4px;
}

.cal-day {
    min-height: 90px;
    border: 1px solid var(--border-light);
    border-radius: 8px;
    padding: 6px;
    transition: var(--transition);
    cursor: pointer;
}

.cal-day:hover { background: var(--bg-hover); }
.cal-day.today { border-color: var(--accent); background: var(--accent-light); }
.cal-day.other-month { opacity: 0.4; }

.cal-day-num {
    font-size: 13px;
    font-weight: 600;
    color: var(--text-secondary);
    margin-bottom: 4px;
    text-align: right;
}

.cal-day.today .cal-day-num { color: var(--accent); font-weight: 700; }

.cal-task {
    font-size: 10.5px;
    padding: 2px 6px;
    border-radius: 4px;
    margin-bottom: 2px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    font-weight: 500;
    cursor: pointer;
}

.cal-task.overdue { background: rgba(239,68,68,0.15); color: var(--danger); }
.cal-task.upcoming { background: rgba(245,158,11,0.15); color: #B45309; }
.cal-task.pending { background: rgba(99,102,241,0.12); color: var(--info); }
.cal-task.completed { background: rgba(16,185,129,0.12); color: var(--success); }

/* Notification Dropdown */
.notif-dropdown {
    display: none;
    position: absolute;
    top: calc(100% + 8px);
    right: 0;
    width: 360px;
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    box-shadow: var(--shadow-lg);
    z-index: 200;
    overflow: hidden;
}

.notif-dropdown.active { display: block; }

.notif-header {
    padding: 14px 16px;
    border-bottom: 1px solid var(--border);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.notif-header h4 { font-size: 14px; font-weight: 700; }

.notif-item {
    padding: 12px 16px;
    border-bottom: 1px solid var(--border-light);
    transition: var(--transition);
    cursor: pointer;
}

.notif-item:hover { background: var(--bg-hover); }
.notif-item.unread { background: var(--accent-light); }

.notif-item-title { font-size: 13px; font-weight: 600; margin-bottom: 2px; }
.notif-item-msg { font-size: 12px; color: var(--text-secondary); }
.notif-item-time { font-size: 11px; color: var(--text-muted); margin-top: 3px; }

/* Alert */
.alert {
    padding: 12px 16px;
    border-radius: var(--radius-sm);
    font-size: 13.5px;
    margin-bottom: 16px;
    display: flex;
    align-items: center;
    gap: 10px;
}

.alert-success { background: var(--success-light); color: var(--success); border: 1px solid rgba(16,185,129,0.2); }
.alert-danger { background: var(--danger-light); color: var(--danger); border: 1px solid rgba(239,68,68,0.2); }
.alert-warning { background: var(--warning-light); color: #B45309; border: 1px solid rgba(245,158,11,0.2); }
.alert-info { background: var(--info-light); color: var(--info); border: 1px solid rgba(99,102,241,0.2); }

/* Priority Tags */
.priority-dot {
    width: 8px; height: 8px;
    border-radius: 50%;
    display: inline-block;
    margin-right: 5px;
}

/* Task Card */
.task-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 16px 18px;
    margin-bottom: 10px;
    transition: var(--transition);
    cursor: pointer;
    position: relative;
    overflow: hidden;
}

.task-card:hover { box-shadow: var(--shadow); transform: translateY(-1px); }

.task-card-header {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: 12px;
    margin-bottom: 10px;
}

.task-title { font-size: 14px; font-weight: 600; }
.task-meta { display: flex; align-items: center; gap: 10px; flex-wrap: wrap; }
.task-due { font-size: 12px; color: var(--text-muted); }
.task-due.overdue { color: var(--danger); font-weight: 600; }
.task-due.upcoming { color: var(--warning); font-weight: 600; }
.task-assignee { font-size: 12px; color: var(--text-secondary); }

/* Empty State */
.empty-state {
    text-align: center;
    padding: 48px 24px;
    color: var(--text-muted);
}

.empty-state-icon { font-size: 48px; margin-bottom: 16px; opacity: 0.5; }
.empty-state h3 { font-size: 16px; font-weight: 600; color: var(--text-secondary); margin-bottom: 6px; }
.empty-state p { font-size: 13px; }

/* Breadcrumb */
.breadcrumb {
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: 13px;
    color: var(--text-muted);
    margin-bottom: 20px;
}

.breadcrumb a { color: var(--text-muted); text-decoration: none; }
.breadcrumb a:hover { color: var(--accent); }
.breadcrumb-sep { opacity: 0.4; }
.breadcrumb .current { color: var(--text-primary); font-weight: 600; }

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

/* Page Header */
.page-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 24px;
}

.page-header h1 {
    font-size: 22px;
    font-weight: 700;
    color: var(--text-primary);
}

.page-header p {
    font-size: 13px;
    color: var(--text-muted);
    margin-top: 3px;
}

/* Tabs */
.tabs {
    display: flex;
    gap: 4px;
    border-bottom: 1px solid var(--border);
    margin-bottom: 24px;
}

.tab-item {
    padding: 10px 18px;
    font-size: 13.5px;
    font-weight: 500;
    color: var(--text-secondary);
    cursor: pointer;
    border-bottom: 2px solid transparent;
    transition: var(--transition);
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    gap: 6px;
}

.tab-item:hover { color: var(--text-primary); }
.tab-item.active { color: var(--accent); border-bottom-color: var(--accent); font-weight: 600; }

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

.progress-fill {
    height: 100%;
    border-radius: 3px;
    background: var(--accent-gradient);
    transition: width 0.4s ease;
}

/* Utilities */
.flex { display: flex; }
.flex-center { display: flex; align-items: center; justify-content: center; }
.items-center { align-items: center; }
.justify-between { justify-content: space-between; }
.gap-2 { gap: 8px; }
.gap-3 { gap: 12px; }
.gap-4 { gap: 16px; }
.mt-1 { margin-top: 6px; }
.mt-2 { margin-top: 12px; }
.mt-4 { margin-top: 20px; }
.mb-4 { margin-bottom: 20px; }
.text-sm { font-size: 12px; }
.text-muted { color: var(--text-muted); }
.font-bold { font-weight: 700; }
.w-full { width: 100%; }

/* Responsive */
@media (max-width: 768px) {
    .sidebar { transform: translateX(-100%); }
    .sidebar.open { transform: translateX(0); }
    .main-content { margin-left: 0; }
    .grid-2, .grid-3, .grid-12 { grid-template-columns: 1fr; }
    .stats-grid { grid-template-columns: 1fr 1fr; }
    .calendar-grid { gap: 2px; }
    .cal-day { min-height: 60px; }
}