/**
 * STOK OFİSİ v2 - Dark Theme CSS
 * Modern, profesyonel dark dashboard tasarımı
 */

/* ==========================================
   CSS VARIABLES
   ========================================== */
:root {
    /* Primary Colors */
    --primary: #667eea;
    --primary-hover: #5a6fd6;
    --primary-light: rgba(102, 126, 234, 0.1);
    --primary-gradient: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    
    /* Background Colors */
    --bg-dark: #0f0f1a;
    --bg-card: #1a1a2e;
    --bg-card-hover: #252542;
    --bg-input: #16162b;
    --bg-sidebar: #12121f;
    
    /* Text Colors */
    --text-primary: #e2e8f0;
    --text-secondary: #94a3b8;
    --text-muted: #64748b;
    
    /* Status Colors */
    --success: #10b981;
    --success-light: rgba(16, 185, 129, 0.1);
    --danger: #ef4444;
    --danger-light: rgba(239, 68, 68, 0.1);
    --warning: #f59e0b;
    --warning-light: rgba(245, 158, 11, 0.1);
    --info: #3b82f6;
    --info-light: rgba(59, 130, 246, 0.1);
    
    /* Border */
    --border-color: rgba(255, 255, 255, 0.1);
    --border-light: rgba(255, 255, 255, 0.05);
    
    /* Shadows */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.3);
    --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.3);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.4);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.5);
    
    /* Transitions */
    --transition: all 0.3s ease;
    
    /* Sidebar */
    --sidebar-width: 260px;
    --sidebar-collapsed-width: 70px;
    
    /* Border Radius */
    --radius-sm: 6px;
    --radius: 10px;
    --radius-lg: 16px;
    --radius-xl: 24px;
}

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

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

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background-color: var(--bg-dark);
    color: var(--text-primary);
    line-height: 1.6;
    min-height: 100vh;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

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

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

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

/* ==========================================
   TYPOGRAPHY
   ========================================== */
h1, h2, h3, h4, h5, h6 {
    font-weight: 600;
    line-height: 1.3;
    color: var(--text-primary);
}

h1 { font-size: 2rem; }
h2 { font-size: 1.75rem; }
h3 { font-size: 1.5rem; }
h4 { font-size: 1.25rem; }
h5 { font-size: 1.125rem; }
h6 { font-size: 1rem; }

.text-muted { color: var(--text-muted); }
.text-secondary { color: var(--text-secondary); }
.text-primary { color: var(--primary) !important; }
.text-success { color: var(--success) !important; }
.text-danger { color: var(--danger) !important; }
.text-warning { color: var(--warning) !important; }

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

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

.sidebar-header {
    padding: 1.5rem;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    gap: 12px;
}

.sidebar-logo {
    width: 40px;
    height: 40px;
    background: var(--primary-gradient);
    border-radius: var(--radius);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
    font-weight: 700;
    color: white;
}

.sidebar-brand {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--text-primary);
}

.sidebar-nav {
    flex: 1;
    padding: 1rem 0;
    overflow-y: auto;
}

.nav-section {
    padding: 0 1rem;
    margin-bottom: 1.5rem;
}

.nav-section-title {
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--text-muted);
    padding: 0 0.75rem;
    margin-bottom: 0.5rem;
}

.nav-item {
    margin-bottom: 4px;
}

.nav-link {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 0.75rem 1rem;
    border-radius: var(--radius);
    color: var(--text-secondary);
    transition: var(--transition);
}

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

.nav-link.active {
    background: var(--primary-light);
    color: var(--primary);
}

.nav-link i {
    font-size: 1.25rem;
    width: 24px;
    text-align: center;
}

.nav-link .badge {
    margin-left: auto;
    padding: 2px 8px;
    font-size: 0.75rem;
    border-radius: 999px;
    background: var(--primary);
    color: white;
}

.sidebar-footer {
    padding: 1rem 1.5rem;
    border-top: 1px solid var(--border-color);
}

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

.topbar {
    height: 70px;
    background: var(--bg-card);
    border-bottom: 1px solid var(--border-color);
    padding: 0 2rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
    position: sticky;
    top: 0;
    z-index: 100;
}

.topbar-left {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.topbar-title {
    font-size: 1.25rem;
    font-weight: 600;
}

.topbar-right {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.content-wrapper {
    flex: 1;
    padding: 2rem;
}

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

.card:hover {
    border-color: var(--border-light);
    box-shadow: var(--shadow-lg);
}

.card-header {
    padding: 1.25rem 1.5rem;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.card-title {
    font-size: 1.125rem;
    font-weight: 600;
    margin: 0;
}

.card-body {
    padding: 1.5rem;
}

.card-footer {
    padding: 1rem 1.5rem;
    border-top: 1px solid var(--border-color);
    background: rgba(0, 0, 0, 0.2);
}

/* ==========================================
   STAT CARDS
   ========================================== */
.stat-card {
    background: var(--bg-card);
    border-radius: var(--radius-lg);
    padding: 1.5rem;
    position: relative;
    overflow: hidden;
    border: 1px solid var(--border-color);
}

.stat-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 4px;
    height: 100%;
}

.stat-card.primary::before { background: var(--primary); }
.stat-card.success::before { background: var(--success); }
.stat-card.warning::before { background: var(--warning); }
.stat-card.danger::before { background: var(--danger); }
.stat-card.info::before { background: var(--info); }

.stat-icon {
    position: absolute;
    top: 1rem;
    right: 1rem;
    font-size: 3rem;
    opacity: 0.1;
}

.stat-value {
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: 0.25rem;
}

.stat-label {
    font-size: 0.875rem;
    color: var(--text-secondary);
}

/* ==========================================
   BUTTONS
   ========================================== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 0.625rem 1.25rem;
    font-size: 0.875rem;
    font-weight: 500;
    border-radius: var(--radius);
    border: none;
    cursor: pointer;
    transition: var(--transition);
    text-decoration: none;
}

.btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

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

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(102, 126, 234, 0.4);
}

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

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

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

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

.btn-outline {
    background: transparent;
    border: 1px solid var(--border-color);
    color: var(--text-primary);
}

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

.btn-lg {
    padding: 0.875rem 1.75rem;
    font-size: 1rem;
}

.btn-sm {
    padding: 0.375rem 0.75rem;
    font-size: 0.75rem;
}

.btn-icon {
    width: 40px;
    height: 40px;
    padding: 0;
    border-radius: var(--radius);
}

/* ==========================================
   FORMS
   ========================================== */
.form-group {
    margin-bottom: 1.25rem;
}

.form-label {
    display: block;
    margin-bottom: 0.5rem;
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--text-secondary);
}

.form-control {
    width: 100%;
    padding: 0.75rem 1rem;
    font-size: 0.9375rem;
    color: var(--text-primary);
    background: var(--bg-input);
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    transition: var(--transition);
}

.form-control:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px var(--primary-light);
}

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

.form-control:disabled {
    background: rgba(255, 255, 255, 0.05);
    cursor: not-allowed;
}

.input-group {
    display: flex;
    gap: 0;
}

.input-group .form-control {
    border-radius: var(--radius) 0 0 var(--radius);
}

.input-group .btn {
    border-radius: 0 var(--radius) var(--radius) 0;
    white-space: nowrap;
}

.form-text {
    font-size: 0.8125rem;
    color: var(--text-muted);
    margin-top: 0.375rem;
}

/* ==========================================
   ALERTS
   ========================================== */
.alert {
    padding: 1rem 1.25rem;
    border-radius: var(--radius);
    margin-bottom: 1rem;
    display: flex;
    align-items: flex-start;
    gap: 12px;
}

.alert-success {
    background: var(--success-light);
    border: 1px solid rgba(16, 185, 129, 0.3);
    color: var(--success);
}

.alert-danger {
    background: var(--danger-light);
    border: 1px solid rgba(239, 68, 68, 0.3);
    color: var(--danger);
}

.alert-warning {
    background: var(--warning-light);
    border: 1px solid rgba(245, 158, 11, 0.3);
    color: var(--warning);
}

.alert-info {
    background: var(--info-light);
    border: 1px solid rgba(59, 130, 246, 0.3);
    color: var(--info);
}

.alert-dismissible {
    position: relative;
    padding-right: 3rem;
}

.alert .btn-close {
    position: absolute;
    right: 1rem;
    top: 50%;
    transform: translateY(-50%);
    background: none;
    border: none;
    color: inherit;
    cursor: pointer;
    opacity: 0.7;
}

/* ==========================================
   BADGES
   ========================================== */
.badge {
    display: inline-flex;
    align-items: center;
    padding: 0.25rem 0.625rem;
    font-size: 0.75rem;
    font-weight: 500;
    border-radius: 999px;
}

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

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

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

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

.table th {
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--text-muted);
    background: rgba(0, 0, 0, 0.2);
}

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

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

/* ==========================================
   SERVICE CARD
   ========================================== */
.service-card {
    background: var(--bg-card);
    border-radius: var(--radius-lg);
    border: 1px solid var(--border-color);
    padding: 1.5rem;
    transition: var(--transition);
    cursor: pointer;
}

.service-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-xl);
    border-color: var(--primary);
}

.service-card.active {
    border-color: var(--success);
    background: linear-gradient(135deg, var(--bg-card) 0%, rgba(16, 185, 129, 0.1) 100%);
}

.service-card.inactive {
    opacity: 0.6;
    cursor: not-allowed;
}

.service-icon {
    width: 60px;
    height: 60px;
    border-radius: var(--radius);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 1rem;
}

.service-icon img {
    width: 36px;
    height: 36px;
}

.service-name {
    font-size: 1.125rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
}

.service-stats {
    display: flex;
    gap: 1.5rem;
    margin-top: 1rem;
    padding-top: 1rem;
    border-top: 1px solid var(--border-color);
}

.service-stat {
    text-align: center;
}

.service-stat-value {
    font-size: 1.25rem;
    font-weight: 700;
}

.service-stat-label {
    font-size: 0.75rem;
    color: var(--text-muted);
}

/* ==========================================
   DOWNLOAD BOX
   ========================================== */
.download-box {
    background: var(--bg-card);
    border-radius: var(--radius-lg);
    border: 1px solid var(--border-color);
    padding: 2rem;
}

.download-header {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 1.5rem;
}

.download-icon {
    width: 56px;
    height: 56px;
    border-radius: var(--radius);
    display: flex;
    align-items: center;
    justify-content: center;
}

.download-title {
    font-size: 1.25rem;
    font-weight: 600;
}

.download-subtitle {
    color: var(--text-secondary);
    font-size: 0.875rem;
}

.download-input-group {
    display: flex;
    gap: 1rem;
    margin-bottom: 1rem;
}

.download-input-group .form-control {
    flex: 1;
}

.download-stats {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 1rem;
    margin-top: 1.5rem;
    padding-top: 1.5rem;
    border-top: 1px solid var(--border-color);
}

.download-stat {
    text-align: center;
    padding: 1rem;
    background: rgba(0, 0, 0, 0.2);
    border-radius: var(--radius);
}

/* ==========================================
   HISTORY LIST
   ========================================== */
.history-item {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1rem;
    background: rgba(0, 0, 0, 0.2);
    border-radius: var(--radius);
    margin-bottom: 0.75rem;
    transition: var(--transition);
}

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

.history-number {
    width: 32px;
    height: 32px;
    background: var(--primary-light);
    color: var(--primary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 600;
    font-size: 0.875rem;
}

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

.history-url {
    font-family: 'Fira Code', monospace;
    font-size: 0.875rem;
    color: var(--text-primary);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.history-time {
    font-size: 0.75rem;
    color: var(--text-muted);
}

/* ==========================================
   USER DROPDOWN
   ========================================== */
.user-dropdown {
    position: relative;
}

.user-btn {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 0.5rem 1rem;
    background: var(--bg-input);
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    cursor: pointer;
    transition: var(--transition);
}

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

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

.user-name {
    font-weight: 500;
    font-size: 0.875rem;
}

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

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

.dropdown-item {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 0.75rem 1rem;
    color: var(--text-secondary);
    transition: var(--transition);
}

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

.dropdown-divider {
    height: 1px;
    background: var(--border-color);
    margin: 0.5rem 0;
}

/* ==========================================
   PAGINATION
   ========================================== */
.pagination {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    justify-content: center;
    margin-top: 2rem;
}

.page-link {
    display: flex;
    align-items: center;
    justify-content: center;
    min-width: 36px;
    height: 36px;
    padding: 0 0.75rem;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    color: var(--text-secondary);
    font-size: 0.875rem;
    transition: var(--transition);
}

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

.page-link.active {
    background: var(--primary);
    border-color: var(--primary);
    color: white;
}

.page-link.disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

/* ==========================================
   UTILITIES
   ========================================== */
.d-flex { display: flex; }
.d-grid { display: grid; }
.d-none { display: none; }
.d-block { display: block; }

.flex-column { flex-direction: column; }
.align-center { align-items: center; }
.justify-center { justify-content: center; }
.justify-between { justify-content: space-between; }

.gap-1 { gap: 0.25rem; }
.gap-2 { gap: 0.5rem; }
.gap-3 { gap: 1rem; }
.gap-4 { gap: 1.5rem; }

.m-0 { margin: 0; }
.mt-1 { margin-top: 0.25rem; }
.mt-2 { margin-top: 0.5rem; }
.mt-3 { margin-top: 1rem; }
.mt-4 { margin-top: 1.5rem; }
.mb-1 { margin-bottom: 0.25rem; }
.mb-2 { margin-bottom: 0.5rem; }
.mb-3 { margin-bottom: 1rem; }
.mb-4 { margin-bottom: 1.5rem; }

.p-0 { padding: 0; }
.p-1 { padding: 0.25rem; }
.p-2 { padding: 0.5rem; }
.p-3 { padding: 1rem; }
.p-4 { padding: 1.5rem; }

.w-100 { width: 100%; }
.h-100 { height: 100%; }

.text-center { text-align: center; }
.text-right { text-align: right; }

.rounded { border-radius: var(--radius); }
.rounded-lg { border-radius: var(--radius-lg); }

/* Grid System */
.row {
    display: flex;
    flex-wrap: wrap;
    margin: -0.75rem;
}

.col { flex: 1; padding: 0.75rem; }
.col-6 { flex: 0 0 50%; max-width: 50%; padding: 0.75rem; }
.col-4 { flex: 0 0 33.333%; max-width: 33.333%; padding: 0.75rem; }
.col-3 { flex: 0 0 25%; max-width: 25%; padding: 0.75rem; }

/* ==========================================
   RESPONSIVE
   ========================================== */
@media (max-width: 1024px) {
    .sidebar {
        transform: translateX(-100%);
    }
    
    .sidebar.open {
        transform: translateX(0);
    }
    
    .main-content {
        margin-left: 0;
    }
    
    .download-stats {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .col-3, .col-4 {
        flex: 0 0 50%;
        max-width: 50%;
    }
}

@media (max-width: 768px) {
    .content-wrapper {
        padding: 1rem;
    }
    
    .topbar {
        padding: 0 1rem;
    }
    
    .download-input-group {
        flex-direction: column;
    }
    
    .download-stats {
        grid-template-columns: 1fr 1fr;
    }
    
    .col-3, .col-4, .col-6 {
        flex: 0 0 100%;
        max-width: 100%;
    }
    
    .service-stats {
        flex-wrap: wrap;
    }
}

/* ==========================================
   ANIMATIONS
   ========================================== */
@keyframes fadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.5; }
}

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

.animate-fade-in {
    animation: fadeIn 0.3s ease forwards;
}

.animate-pulse {
    animation: pulse 2s infinite;
}

.animate-spin {
    animation: spin 1s linear infinite;
}

/* Loading Spinner */
.spinner {
    width: 20px;
    height: 20px;
    border: 2px solid var(--border-color);
    border-top-color: var(--primary);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}