/**
 * Tuzla Teknik Akademi - Ana CSS
 * Tema sistemi: Açık ve Koyu tema desteği
 */

/* =====================================================
   CSS DEĞİŞKENLERİ - AÇIK TEMA (Varsayılan)
   ===================================================== */
:root {
    /* Ana renkler */
    --primary: #3b82f6;
    --primary-dark: #2563eb;
    --primary-light: #60a5fa;
    --primary-bg: #eff6ff;
    
    /* Başarı, Uyarı, Hata */
    --success: #10b981;
    --success-bg: #d1fae5;
    --warning: #f59e0b;
    --warning-bg: #fef3c7;
    --danger: #ef4444;
    --danger-bg: #fee2e2;
    --info: #06b6d4;
    --info-bg: #cffafe;
    
    /* Arka plan renkleri */
    --bg-primary: #ffffff;
    --bg-secondary: #f8fafc;
    --bg-tertiary: #f1f5f9;
    --bg-hover: #e2e8f0;
    
    /* Metin renkleri */
    --text-primary: #1e293b;
    --text-secondary: #64748b;
    --text-muted: #94a3b8;
    --text-inverse: #ffffff;
    
    /* Kenarlık */
    --border-color: #e2e8f0;
    --border-light: #f1f5f9;
    
    /* Gölge */
    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
    --shadow: 0 1px 3px 0 rgb(0 0 0 / 0.1), 0 1px 2px -1px rgb(0 0 0 / 0.1);
    --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
    
    /* Sidebar */
    --sidebar-width: 260px;
    --sidebar-collapsed-width: 70px;
    --sidebar-bg: #ffffff;
    --sidebar-border: #e2e8f0;
    
    /* Header */
    --header-height: 64px;
    --header-bg: #ffffff;
    
    /* Geçişler */
    --transition-fast: 150ms ease;
    --transition: 200ms ease;
    --transition-slow: 300ms ease;
    
    /* Border radius */
    --radius-sm: 4px;
    --radius: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-full: 9999px;
}

/* =====================================================
   KOYU TEMA
   ===================================================== */
[data-theme="dark"] {
    --primary: #60a5fa;
    --primary-dark: #3b82f6;
    --primary-light: #93c5fd;
    --primary-bg: #1e3a5f;
    
    --success: #34d399;
    --success-bg: #064e3b;
    --warning: #fbbf24;
    --warning-bg: #78350f;
    --danger: #f87171;
    --danger-bg: #7f1d1d;
    --info: #22d3ee;
    --info-bg: #164e63;
    
    --bg-primary: #0f172a;
    --bg-secondary: #1e293b;
    --bg-tertiary: #334155;
    --bg-hover: #475569;
    
    --text-primary: #f1f5f9;
    --text-secondary: #cbd5e1;
    --text-muted: #94a3b8;
    --text-inverse: #0f172a;
    
    --border-color: #334155;
    --border-light: #1e293b;
    
    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.3);
    --shadow: 0 1px 3px 0 rgb(0 0 0 / 0.4), 0 1px 2px -1px rgb(0 0 0 / 0.4);
    --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.4), 0 2px 4px -2px rgb(0 0 0 / 0.4);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.4), 0 4px 6px -4px rgb(0 0 0 / 0.4);
    
    --sidebar-bg: #1e293b;
    --sidebar-border: #334155;
    
    --header-bg: #1e293b;
}

/* =====================================================
   RESET & TEMEL STİLLER
   ===================================================== */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    font-size: 16px;
    scroll-behavior: smooth;
    overflow-x: hidden;
}

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

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

a:hover {
    color: var(--primary-dark);
}

img {
    max-width: 100%;
    height: auto;
}

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

.main-content {
    flex: 1;
    margin-left: var(--sidebar-width);
    min-height: 100vh;
    transition: margin-left var(--transition);
}

.main-content.sidebar-collapsed {
    margin-left: var(--sidebar-collapsed-width);
}

.page-content {
    padding: 24px;
    padding-top: calc(var(--header-height) + 24px);
}

/* =====================================================
   SIDEBAR
   ===================================================== */
.sidebar {
    position: fixed;
    left: 0;
    top: 0;
    width: var(--sidebar-width);
    height: 100vh;
    background-color: var(--sidebar-bg);
    border-right: 1px solid var(--sidebar-border);
    display: flex;
    flex-direction: column;
    z-index: 1000;
    transition: width var(--transition);
    overflow: hidden;
}

.sidebar.collapsed {
    width: var(--sidebar-collapsed-width);
}

.sidebar-header {
    padding: 16px 20px;
    display: flex;
    align-items: center;
    gap: 12px;
    min-height: var(--header-height);
}

.sidebar-logo {
    width: 36px;
    height: 36px;
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    border-radius: var(--radius);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-weight: 700;
    font-size: 18px;
    flex-shrink: 0;
}

.sidebar-title {
    font-size: 16px;
    font-weight: 600;
    color: var(--text-primary);
    white-space: nowrap;
    overflow: hidden;
    transition: opacity var(--transition);
}

.sidebar.collapsed .sidebar-title {
    opacity: 0;
    width: 0;
}

.sidebar-nav {
    flex: 1;
    padding: 16px 12px;
    overflow-y: auto;
}

.nav-section {
    margin-bottom: 24px;
}

.nav-section-title {
    font-size: 11px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    color: var(--text-muted);
    padding: 0 12px;
    margin-bottom: 8px;
    white-space: nowrap;
    overflow: hidden;
}

.sidebar.collapsed .nav-section-title {
    opacity: 0;
    height: 0;
    margin: 0;
}

.nav-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 10px 12px;
    border-radius: var(--radius);
    color: var(--text-secondary);
    font-size: 14px;
    font-weight: 500;
    transition: all var(--transition-fast);
    margin-bottom: 4px;
    white-space: nowrap;
}

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

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

.nav-item i {
    width: 20px;
    height: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    font-size: 18px;
}

.nav-item span {
    overflow: hidden;
    transition: opacity var(--transition);
}

.sidebar.collapsed .nav-item span {
    opacity: 0;
    width: 0;
}

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

.sidebar-toggle {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    width: 100%;
    padding: 10px;
    background: transparent;
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    color: var(--text-secondary);
    font-size: 14px;
    cursor: pointer;
    transition: all var(--transition-fast);
}

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

.sidebar.collapsed .sidebar-toggle span {
    display: none;
}

.sidebar-logout {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 16px;
    background: transparent;
    border: none;
    border-radius: var(--radius);
    color: var(--danger);
    font-size: 14px;
    text-decoration: none;
    cursor: pointer;
    transition: all var(--transition-fast);
    margin-bottom: 8px;
}

.sidebar-logout:hover {
    background-color: rgba(239, 68, 68, 0.1);
    color: var(--danger);
}

.sidebar-logout i {
    font-size: 18px;
}

.sidebar.collapsed .sidebar-logout span {
    display: none;
}

.sidebar.collapsed .sidebar-logout {
    justify-content: center;
    padding: 12px;
}

/* =====================================================
   HEADER
   ===================================================== */
.header {
    position: fixed;
    top: 0;
    left: var(--sidebar-width);
    right: 0;
    height: var(--header-height);
    background-color: var(--header-bg);
    border-bottom: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 24px;
    z-index: 900;
    transition: left var(--transition);
}

.header.sidebar-collapsed {
    left: var(--sidebar-collapsed-width);
}

.header-left {
    display: flex;
    align-items: center;
    gap: 16px;
}

.header-search {
    position: relative;
    width: 320px;
}

.header-search input {
    width: 100%;
    padding: 10px 16px 10px 40px;
    background-color: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-full);
    font-size: 14px;
    color: var(--text-primary);
    transition: all var(--transition-fast);
}

.header-search input:focus {
    outline: none;
    border-color: var(--primary);
    background-color: var(--bg-primary);
}

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

.header-search i {
    position: absolute;
    left: 14px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-muted);
}

/* Search Results Dropdown */
.search-results {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    margin-top: 8px;
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-lg);
    max-height: 400px;
    overflow-y: auto;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: all var(--transition-fast);
    z-index: 1001;
}

.search-results.show {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.search-header {
    padding: 12px 16px;
    border-bottom: 1px solid var(--border-color);
    font-size: 12px;
    color: var(--text-muted);
    font-weight: 500;
}

.search-items {
    padding: 8px;
}

.search-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 10px 12px;
    border-radius: var(--radius);
    text-decoration: none;
    transition: background var(--transition-fast);
}

.search-item:hover {
    background: var(--bg-hover);
}

.search-item-icon {
    width: 36px;
    height: 36px;
    border-radius: var(--radius);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 14px;
    flex-shrink: 0;
    background: var(--primary-bg);
    color: var(--primary);
}

.search-item-icon[data-type="announcement"] { background: #f3e8ff; color: #9333ea; }
.search-item-icon[data-type="course"] { background: #dcfce7; color: #16a34a; }
.search-item-icon[data-type="test"] { background: #fee2e2; color: #dc2626; }
.search-item-icon[data-type="homework"] { background: #fef3c7; color: #d97706; }
.search-item-icon[data-type="user"] { background: #e0f2fe; color: #0284c7; }

.search-item-content {
    flex: 1;
    min-width: 0;
}

.search-item-title {
    font-size: 14px;
    font-weight: 500;
    color: var(--text-primary);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.search-item-excerpt {
    font-size: 12px;
    color: var(--text-muted);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.search-item-date {
    font-size: 11px;
    color: var(--text-muted);
    flex-shrink: 0;
}

.search-loading,
.search-empty,
.search-error {
    padding: 24px;
    text-align: center;
    color: var(--text-muted);
}

.search-loading i {
    margin-right: 8px;
}

.search-empty i {
    display: block;
    font-size: 32px;
    margin-bottom: 8px;
    opacity: 0.5;
}

.header-right {
    display: flex;
    align-items: center;
    gap: 8px;
}

.header-btn {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: transparent;
    border: none;
    border-radius: var(--radius);
    color: var(--text-secondary);
    cursor: pointer;
    position: relative;
    transition: all var(--transition-fast);
}

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

.header-btn i {
    font-size: 20px;
}

.notification-btn {
    position: relative;
}

.notification-badge {
    position: absolute;
    top: 6px;
    right: 6px;
    min-width: 18px;
    height: 18px;
    padding: 0 5px;
    background-color: var(--danger);
    color: white;
    font-size: 11px;
    font-weight: 600;
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
}

.user-menu {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 6px 12px 6px 6px;
    background-color: var(--bg-secondary);
    border-radius: var(--radius-full);
    cursor: pointer;
    transition: background-color var(--transition-fast);
}

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

.user-avatar {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    object-fit: cover;
}

.user-info {
    display: flex;
    flex-direction: column;
}

.user-name {
    font-size: 14px;
    font-weight: 500;
    color: var(--text-primary);
    line-height: 1.2;
}

.user-role {
    font-size: 12px;
    color: var(--text-muted);
}

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

.card-header {
    padding: 16px 20px;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.card-title {
    font-size: 16px;
    font-weight: 600;
    color: var(--text-primary);
}

.card-body {
    padding: 20px;
}

.card-footer {
    padding: 16px 20px;
    border-top: 1px solid var(--border-color);
    background-color: var(--bg-secondary);
}

/* =====================================================
   BUTONLAR
   ===================================================== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 10px 20px;
    font-size: 14px;
    font-weight: 500;
    border-radius: var(--radius);
    border: none;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.btn-primary {
    background-color: var(--primary);
    color: white !important;
}

.btn-primary:hover {
    background-color: var(--primary-dark);
    color: white !important;
}

.btn-primary:focus,
.btn-primary:active {
    background-color: var(--primary-dark);
    color: white !important;
}

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

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

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

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

.btn-sm {
    padding: 6px 12px;
    font-size: 13px;
}

.btn-lg {
    padding: 14px 28px;
    font-size: 16px;
}

.btn-icon {
    width: 36px;
    height: 36px;
    padding: 0;
}

/* =====================================================
   FORM ELEMANLARI
   ===================================================== */
.form-group {
    margin-bottom: 20px;
}

.form-label {
    display: block;
    font-size: 14px;
    font-weight: 500;
    color: var(--text-primary);
    margin-bottom: 6px;
}

.form-input,
.form-select,
.form-textarea {
    width: 100%;
    padding: 10px 14px;
    font-size: 14px;
    color: var(--text-primary);
    background-color: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    transition: all var(--transition-fast);
}

.form-input:focus,
.form-select:focus,
.form-textarea:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px var(--primary-bg);
}

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

.form-textarea {
    min-height: 120px;
    resize: vertical;
}

.form-hint {
    font-size: 12px;
    color: var(--text-muted);
    margin-top: 4px;
}

.form-error {
    font-size: 12px;
    color: var(--danger);
    margin-top: 4px;
}

/* =====================================================
   ALERT / BİLDİRİM KUTULARI
   ===================================================== */
.alert {
    padding: 14px 16px;
    border-radius: var(--radius);
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 16px;
    position: relative;
}

.alert-close {
    position: absolute;
    right: 12px;
    top: 50%;
    transform: translateY(-50%);
    width: 28px;
    height: 28px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: transparent;
    border: none;
    border-radius: 6px;
    cursor: pointer;
    opacity: 0.7;
    transition: all 0.2s ease;
    color: inherit;
    font-size: 18px;
    padding: 0;
    line-height: 1;
}

.alert-close i {
    font-size: 18px;
    line-height: 1;
}

.alert-close:hover {
    opacity: 1;
    background: rgba(0, 0, 0, 0.1);
}

[data-theme="dark"] .alert-close:hover {
    background: rgba(255, 255, 255, 0.1);
}

.alert[data-dismissible],
.alert[data-auto-close] {
    padding-right: 48px;
}

.alert-success {
    background-color: var(--success-bg);
    color: var(--success);
    border: 1px solid var(--success);
}

.alert-error {
    background-color: var(--danger-bg);
    color: var(--danger);
    border: 1px solid var(--danger);
}

.alert-warning {
    background-color: var(--warning-bg);
    color: var(--warning);
    border: 1px solid var(--warning);
}

.alert-info {
    background-color: var(--info-bg);
    color: var(--info);
    border: 1px solid var(--info);
}

/* =====================================================
   BADGE / ETİKETLER
   ===================================================== */
.badge {
    display: inline-flex;
    align-items: center;
    padding: 4px 10px;
    font-size: 12px;
    font-weight: 500;
    border-radius: var(--radius-full);
}

.badge-primary {
    background-color: var(--primary-bg);
    color: var(--primary);
}

.badge-success {
    background-color: var(--success-bg);
    color: var(--success);
}

.badge-warning {
    background-color: var(--warning-bg);
    color: var(--warning);
}

.badge-danger {
    background-color: var(--danger-bg);
    color: var(--danger);
}

/* =====================================================
   TABLO
   ===================================================== */
.table-container {
    overflow-x: auto;
}

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

.table th,
.table td {
    padding: 12px 16px;
    text-align: left;
    border-bottom: 1px solid var(--border-color);
}

.table th {
    font-size: 12px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    color: var(--text-muted);
    background-color: var(--bg-secondary);
}

.table tbody tr:hover {
    background-color: var(--bg-secondary);
}

/* =====================================================
   GRID SİSTEMİ
   ===================================================== */
.grid {
    display: grid;
    gap: 24px;
}

.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }

@media (max-width: 1200px) {
    .grid-4 { grid-template-columns: repeat(3, 1fr); }
}

@media (max-width: 992px) {
    .grid-3, .grid-4 { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
    .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; }
}

/* =====================================================
   STAT KARTLARI
   ===================================================== */
.stat-card {
    background-color: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 20px;
    display: flex;
    align-items: center;
    gap: 16px;
    overflow: hidden;
    min-width: 0;
}

.stat-icon {
    width: 48px;
    height: 48px;
    border-radius: var(--radius);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
}

.stat-icon.blue { background-color: var(--primary-bg); color: var(--primary); }
.stat-icon.green { background-color: var(--success-bg); color: var(--success); }
.stat-icon.orange { background-color: var(--warning-bg); color: var(--warning); }
.stat-icon.red { background-color: var(--danger-bg); color: var(--danger); }
.stat-icon.purple { background-color: #8b5cf620; color: #8b5cf6; }

.stat-content {
    flex: 1;
}

.stat-value {
    font-size: 28px;
    font-weight: 700;
    color: var(--text-primary);
    line-height: 1;
}

.stat-label {
    font-size: 14px;
    color: var(--text-secondary);
    margin-top: 4px;
}

/* =====================================================
   MOBİL MENÜ BUTONU (her zaman tanımlı, desktop'ta gizli)
   ===================================================== */
.mobile-sidebar-toggle {
    display: none;
    align-items: center;
    justify-content: center;
    width: 42px;
    height: 42px;
    border: none;
    background: var(--bg-tertiary, #f1f5f9);
    color: var(--text-primary, #1e293b);
    border-radius: 8px;
    cursor: pointer;
    font-size: 1.3rem;
    margin-right: 12px;
    flex-shrink: 0;
}

.mobile-sidebar-toggle:hover {
    background: var(--bg-hover, #e2e8f0);
}

/* Sidebar overlay */
.sidebar-overlay {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.5);
    z-index: 1000;
    opacity: 0;
    transition: opacity 0.3s ease;
}

.sidebar-overlay.active {
    display: block;
    opacity: 1;
}

/* =====================================================
   RESPONSIVE
   ===================================================== */
@media (max-width: 992px) {
    .sidebar {
        transform: translateX(-100%);
        transition: transform 0.3s ease;
        z-index: 1001;
        position: fixed;
        width: var(--sidebar-width);
    }
    
    .sidebar.mobile-open {
        transform: translateX(0);
    }
    
    .main-content {
        margin-left: 0;
        width: 100%;
        max-width: 100vw;
    }
    
    .header {
        left: 0;
        width: 100%;
        padding: 0 12px;
    }
    
    .header-search {
        display: none;
    }
    
    .mobile-sidebar-toggle {
        display: flex;
    }
    
    .page-content {
        padding: 16px;
        padding-top: calc(var(--header-height) + 16px);
    }
    
    /* Mobilde kullanıcı bilgisi gizle, sadece avatar göster */
    .user-info,
    .user-menu .ph-caret-down {
        display: none;
    }
    
    .user-menu {
        padding: 4px;
    }
    
    /* Bildirim paneli mobil */
    .notification-panel {
        width: calc(100vw - 24px);
        max-width: 360px;
        right: -60px;
    }
    
    /* Dropdown mobil */
    .dropdown-menu {
        min-width: 160px;
    }
    
    /* Mobilde sidebar toggle butonunu gizle */
    .sidebar-footer {
        display: none;
    }
}

/* =====================================================
   UTILITY CLASSES
   ===================================================== */
.text-center { text-align: center; }
.text-right { text-align: right; }
.text-muted { color: var(--text-muted); }
.text-primary { color: var(--primary); }
.text-success { color: var(--success); }
.text-danger { color: var(--danger); }

.mt-1 { margin-top: 8px; }
.mt-2 { margin-top: 16px; }
.mt-3 { margin-top: 24px; }
.mb-1 { margin-bottom: 8px; }
.mb-2 { margin-bottom: 16px; }
.mb-3 { margin-bottom: 24px; }

.d-flex { display: flex; }
.align-center { align-items: center; }
.justify-between { justify-content: space-between; }
.gap-1 { gap: 8px; }
.gap-2 { gap: 16px; }

.hidden { display: none; }
.visible { display: block; }

/* =====================================================
   DROPDOWN MENÜ
   ===================================================== */
.dropdown-menu {
    position: absolute;
    top: calc(100% + 8px);
    right: 0;
    min-width: 200px;
    background-color: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    box-shadow: var(--shadow-lg);
    z-index: 1000;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: all var(--transition-fast);
}

.dropdown-menu.show {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.dropdown-item {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 10px 16px;
    color: var(--text-primary);
    font-size: 14px;
    transition: background-color var(--transition-fast);
}

.dropdown-item:hover {
    background-color: var(--bg-secondary);
}

.dropdown-item i {
    font-size: 18px;
    color: var(--text-muted);
}

.dropdown-divider {
    height: 1px;
    background-color: var(--border-color);
    margin: 4px 0;
}

/* =====================================================
   BİLDİRİM PANELİ
   ===================================================== */
.notification-panel {
    position: absolute;
    top: calc(100% + 8px);
    right: 0;
    width: 360px;
    background-color: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-lg);
    z-index: 1000;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: all var(--transition-fast);
}

.notification-panel.show {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

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

.notification-header h4 {
    font-size: 16px;
    font-weight: 600;
    color: var(--text-primary);
}

.notification-list {
    max-height: 400px;
    overflow-y: auto;
}

.notification-item {
    display: flex;
    gap: 12px;
    padding: 12px 16px;
    border-bottom: 1px solid var(--border-color);
    transition: background-color var(--transition-fast);
}

.notification-item:hover {
    background-color: var(--bg-secondary);
}

.notification-item.unread {
    background-color: var(--primary-bg);
}

.notification-icon {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: var(--bg-secondary);
    border-radius: 50%;
    color: var(--primary);
    flex-shrink: 0;
}

.notification-content {
    flex: 1;
    min-width: 0;
}

.notification-title {
    font-size: 14px;
    font-weight: 500;
    color: var(--text-primary);
    margin-bottom: 2px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.notification-time {
    font-size: 12px;
    color: var(--text-muted);
}

.notification-footer {
    padding: 12px 16px;
    text-align: center;
    border-top: 1px solid var(--border-color);
}

.notification-footer a {
    font-size: 14px;
    font-weight: 500;
}

.notification-empty,
.notification-loading {
    padding: 32px;
    text-align: center;
    color: var(--text-muted);
}

.notification-loading i {
    animation: spin 1s linear infinite;
}

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

/* =====================================================
   MODAL
   ===================================================== */
.modal {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: rgba(0, 0, 0, 0.5);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 2000;
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition);
}

.modal.show {
    opacity: 1;
    visibility: visible;
}

.modal-dialog {
    width: 100%;
    max-width: 500px;
    background-color: var(--bg-primary);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    transform: scale(0.9);
    transition: transform var(--transition);
}

.modal.show .modal-dialog {
    transform: scale(1);
}

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

.modal-title {
    font-size: 18px;
    font-weight: 600;
}

.modal-close {
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: transparent;
    border: none;
    border-radius: var(--radius);
    color: var(--text-muted);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.modal-close:hover {
    background-color: var(--bg-secondary);
    color: var(--text-primary);
}

.modal-body {
    padding: 24px;
}

.modal-footer {
    display: flex;
    justify-content: flex-end;
    gap: 12px;
    padding: 16px 24px;
    border-top: 1px solid var(--border-color);
}

/* =====================================================
   BİLDİRİM PANELİ
   ===================================================== */
.notification-panel {
    position: absolute;
    top: calc(100% + 8px);
    right: 0;
    width: 380px;
    max-height: 500px;
    background: var(--bg-primary);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: all var(--transition);
    z-index: 1000;
    display: flex;
    flex-direction: column;
}

.notification-panel.show {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.notification-header {
    padding: 16px 20px;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.notification-header h4 {
    font-size: 16px;
    font-weight: 600;
    color: var(--text-primary);
}

.notification-list {
    flex: 1;
    overflow-y: auto;
    max-height: 400px;
}

.notification-item {
    display: flex;
    gap: 12px;
    padding: 14px 20px;
    border-bottom: 1px solid var(--border-light);
    cursor: pointer;
    transition: background var(--transition-fast);
    text-decoration: none;
    color: inherit;
}

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

.notification-item.unread {
    background: var(--primary-bg);
}

.notification-icon {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: var(--primary-light);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.notification-icon i {
    font-size: 20px;
    color: var(--primary);
}

.notification-content {
    flex: 1;
    min-width: 0;
}

.notification-title {
    font-size: 14px;
    font-weight: 500;
    color: var(--text-primary);
    margin-bottom: 4px;
}

.notification-text {
    font-size: 13px;
    color: var(--text-secondary);
    margin-bottom: 6px;
    line-height: 1.4;
}

.notification-time {
    font-size: 12px;
    color: var(--text-muted);
}

.notification-actions {
    margin-top: 10px;
    display: flex;
    gap: 8px;
}

.btn-notif-primary {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 6px 14px;
    background: #25d366;
    color: white;
    border-radius: 6px;
    font-size: 13px;
    font-weight: 500;
    text-decoration: none;
    transition: background 0.2s;
}

.btn-notif-primary:hover {
    background: #20bd5b;
    color: white;
}

.btn-notif-secondary {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 6px 14px;
    background: var(--bg-secondary);
    color: var(--text-secondary);
    border-radius: 6px;
    font-size: 13px;
    font-weight: 500;
    text-decoration: none;
    transition: background 0.2s;
}

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

.notification-empty,
.notification-loading {
    padding: 40px 20px;
    text-align: center;
    color: var(--text-muted);
    font-size: 14px;
}

.notification-footer {
    padding: 12px 20px;
    border-top: 1px solid var(--border-color);
    text-align: center;
}

.notification-footer a {
    font-size: 14px;
    font-weight: 500;
    color: var(--primary);
}

.notification-badge {
    position: absolute;
    top: -2px;
    right: -2px;
    background: #ff3b30;
    color: white;
    font-size: 11px;
    font-weight: 600;
    padding: 2px 6px;
    border-radius: 10px;
    min-width: 18px;
    text-align: center;
}

/* =====================================================
   GLOBAL CONFIRM MODAL
   ===================================================== */
.confirm-modal {
    position: fixed;
    inset: 0;
    z-index: 10000;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
    opacity: 0;
    visibility: hidden;
    transition: all 0.2s ease;
}

.confirm-modal.show {
    opacity: 1;
    visibility: visible;
}

.confirm-backdrop {
    position: absolute;
    inset: 0;
    background: rgba(0, 0, 0, 0.5);
    backdrop-filter: blur(4px);
}

.confirm-dialog {
    position: relative;
    background: var(--bg-primary);
    border-radius: 16px;
    padding: 32px;
    max-width: 400px;
    width: 100%;
    text-align: center;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
    transform: scale(0.9) translateY(-20px);
    transition: transform 0.2s ease;
}

.confirm-modal.show .confirm-dialog {
    transform: scale(1) translateY(0);
}

.confirm-icon {
    width: 64px;
    height: 64px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 20px;
    font-size: 32px;
}

.confirm-icon-warning {
    background: rgba(245, 158, 11, 0.15);
    color: #f59e0b;
}

.confirm-icon-danger {
    background: rgba(239, 68, 68, 0.15);
    color: #ef4444;
}

.confirm-icon-info {
    background: rgba(59, 130, 246, 0.15);
    color: #3b82f6;
}

.confirm-title {
    font-size: 20px;
    font-weight: 600;
    color: var(--text-primary);
    margin: 0 0 8px;
}

.confirm-message {
    font-size: 15px;
    color: var(--text-secondary);
    margin: 0 0 24px;
    line-height: 1.5;
}

.confirm-actions {
    display: flex;
    gap: 12px;
    justify-content: center;
}

.confirm-actions .btn {
    min-width: 120px;
    padding: 12px 24px;
    font-size: 15px;
    font-weight: 500;
    border-radius: 10px;
}

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

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

.confirm-actions .btn-danger {
    background: #ef4444;
    color: white;
    border: none;
}

.confirm-actions .btn-danger:hover {
    background: #dc2626;
}

.confirm-actions .btn-primary {
    background: var(--primary);
    color: white;
    border: none;
}

.confirm-actions .btn-primary:hover {
    background: var(--primary-dark);
}