:root {
    /* Color Palette */
    --bg-dark: #0a0e1a;
    --surface: #111827;
    --card-bg: rgba(17, 24, 39, 0.75);
    --primary: #6366f1;
    --primary-hover: #818cf8;
    --primary-glow: rgba(99, 102, 241, 0.4);
    --success: #10b981;
    --success-glow: rgba(16, 185, 129, 0.3);
    --danger: #ef4444;
    --danger-glow: rgba(239, 68, 68, 0.3);
    --warning: #f59e0b;
    --text-primary: #f1f5f9;
    --text-secondary: #94a3b8;
    --border-color: rgba(99, 102, 241, 0.2);
    --border-light: rgba(255, 255, 255, 0.05);
    
    /* Method Colors */
    --method-fast: #3b82f6;
    --method-eft: #8b5cf6;
    --method-havale: #10b981;
    
    /* Transitions */
    --transition-fast: 0.2s ease;
    --transition-normal: 0.3s ease;
    
    /* Shadow */
    --glow-shadow: 0 0 20px rgba(99, 102, 241, 0.15);
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Inter', sans-serif;
    background-color: var(--bg-dark);
    color: var(--text-primary);
    line-height: 1.6;
    min-height: 100vh;
    background-image: 
        radial-gradient(circle at 15% 50%, rgba(99, 102, 241, 0.08) 0%, transparent 50%),
        radial-gradient(circle at 85% 30%, rgba(16, 185, 129, 0.05) 0%, transparent 50%);
    background-attachment: fixed;
}

/* Custom Scrollbar */
::-webkit-scrollbar { width: 8px; height: 8px; }
::-webkit-scrollbar-track { background: var(--bg-dark); }
::-webkit-scrollbar-thumb { background: #334155; border-radius: 4px; }
::-webkit-scrollbar-thumb:hover { background: var(--primary); }

/* Typography */
h1, h2, h3, h4, h5, h6 { font-weight: 600; line-height: 1.2; }
a { color: var(--primary); text-decoration: none; transition: var(--transition-fast); }
a:hover { color: var(--primary-hover); }

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

/* Sidebar */
.sidebar {
    width: 260px;
    background: rgba(17, 24, 39, 0.6);
    backdrop-filter: blur(16px);
    border-right: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
    position: fixed;
    top: 0; left: 0; bottom: 0;
    z-index: 100;
    transition: transform var(--transition-normal);
}

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

.logo {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--text-primary);
    text-transform: uppercase;
    letter-spacing: 1px;
}

.logo i {
    color: var(--primary);
    font-size: 1.5rem;
    text-shadow: 0 0 10px var(--primary-glow);
}

.mobile-toggle {
    display: none;
    background: none;
    border: none;
    color: var(--text-primary);
    font-size: 1.25rem;
    cursor: pointer;
}

.sidebar-nav {
    flex: 1;
    padding: 24px 16px;
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.nav-item {
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 12px 16px;
    border-radius: 8px;
    color: var(--text-secondary);
    transition: var(--transition-fast);
    position: relative;
    overflow: hidden;
}

.nav-item:hover {
    background: rgba(255, 255, 255, 0.05);
    color: var(--text-primary);
}

.nav-item.active {
    background: linear-gradient(90deg, rgba(99, 102, 241, 0.15) 0%, transparent 100%);
    color: var(--primary-hover);
    border-left: 3px solid var(--primary);
}

.nav-item i { width: 20px; text-align: center; font-size: 1.1rem; }

.sidebar-footer {
    padding: 24px;
    border-top: 1px solid var(--border-light);
}

.connection-status {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 0.875rem;
    padding: 8px 12px;
    background: rgba(0,0,0,0.2);
    border-radius: 20px;
}

.status-indicator {
    width: 10px; height: 10px;
    border-radius: 50%;
    background: var(--text-secondary);
    box-shadow: 0 0 0 rgba(0,0,0,0);
}

.status-indicator.connected {
    background: var(--success);
    box-shadow: 0 0 8px var(--success-glow);
    animation: pulse-green 2s infinite;
}

.status-indicator.disconnected {
    background: var(--danger);
    box-shadow: 0 0 8px var(--danger-glow);
}

/* Main Content */
.main-content {
    flex: 1;
    margin-left: 260px;
    padding: 32px 40px;
    max-width: 100%;
}

.top-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 32px;
}

.page-title {
    font-size: 2rem;
    background: linear-gradient(to right, #fff, #94a3b8);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.header-status {
    display: flex;
    align-items: center;
    gap: 8px;
    background: var(--card-bg);
    padding: 8px 16px;
    border-radius: 20px;
    border: 1px solid var(--border-light);
    font-size: 0.875rem;
}

.pulse-dot {
    width: 8px; height: 8px;
    border-radius: 50%;
    background: var(--warning);
}

/* Tabs */
.tab-content { display: none; animation: fadeIn 0.4s ease; }
.tab-content.active { display: block; }

/* Glass Cards */
.glass-card {
    background: var(--card-bg);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid var(--border-light);
    border-radius: 16px;
    padding: 24px;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.2);
    transition: transform var(--transition-normal), box-shadow var(--transition-normal);
}

.glass-card:hover {
    border-color: var(--border-color);
    box-shadow: var(--glow-shadow);
}

.card-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 24px;
    border-bottom: 1px solid var(--border-light);
    padding-bottom: 16px;
}

.card-header h2 { font-size: 1.25rem; font-weight: 600; display: flex; align-items: center; gap: 10px; }

/* Grid Layouts */
.dashboard-grid, .settings-grid {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 24px;
    margin-top: 24px;
}

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

.col-span-2 { grid-column: span 2; }
@media (max-width: 1024px) {
    .dashboard-grid, .settings-grid { grid-template-columns: 1fr; }
    .col-span-2 { grid-column: span 1; }
}

/* Stats Cards */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 24px;
}

.stat-card {
    background: var(--card-bg);
    border: 1px solid var(--border-light);
    border-radius: 16px;
    padding: 24px;
    display: flex;
    align-items: center;
    gap: 20px;
    position: relative;
    overflow: hidden;
    transition: var(--transition-normal);
}

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

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

.stat-card:hover { transform: translateY(-5px); }

.stat-icon {
    width: 56px; height: 56px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    background: rgba(255,255,255,0.05);
}

.success .stat-icon { color: var(--success); background: var(--success-glow); }
.danger .stat-icon { color: var(--danger); background: var(--danger-glow); }
.primary .stat-icon { color: var(--primary); background: var(--primary-glow); }
.warning .stat-icon { color: var(--warning); background: rgba(245, 158, 11, 0.2); }

.stat-info h3 { font-size: 0.875rem; color: var(--text-secondary); margin-bottom: 4px; font-weight: 500; }
.stat-value { font-size: 1.75rem; font-weight: 700; color: var(--text-primary); font-family: 'JetBrains Mono', monospace; }

/* Tables */
.table-responsive { overflow-x: auto; margin: 0 -24px; padding: 0 24px; }
.data-table { width: 100%; border-collapse: separate; border-spacing: 0; text-align: left; }
.data-table th {
    padding: 16px;
    color: var(--text-secondary);
    font-weight: 500;
    font-size: 0.875rem;
    border-bottom: 1px solid var(--border-light);
    white-space: nowrap;
}
.data-table td {
    padding: 16px;
    border-bottom: 1px solid rgba(255,255,255,0.02);
    font-size: 0.95rem;
    vertical-align: middle;
}
.data-table tbody tr { transition: var(--transition-fast); }
.data-table tbody tr:hover { background: rgba(255,255,255,0.03); }

/* Badges */
.badge {
    padding: 4px 10px;
    border-radius: 20px;
    font-size: 0.75rem;
    font-weight: 600;
    display: inline-flex;
    align-items: center;
    gap: 6px;
}
.badge-in { background: rgba(16, 185, 129, 0.15); color: var(--success); border: 1px solid rgba(16,185,129,0.3); }
.badge-out { background: rgba(239, 68, 68, 0.15); color: var(--danger); border: 1px solid rgba(239,68,68,0.3); }
.badge-fast { background: rgba(59, 130, 246, 0.15); color: var(--method-fast); border: 1px solid rgba(59,130,246,0.3); }
.badge-eft { background: rgba(139, 92, 246, 0.15); color: var(--method-eft); border: 1px solid rgba(139,92,246,0.3); }
.badge-havale { background: rgba(16, 185, 129, 0.15); color: var(--method-havale); border: 1px solid rgba(16,185,129,0.3); }

.amount { font-family: 'JetBrains Mono', monospace; font-weight: 600; }
.amount.in { color: var(--success); }
.amount.out { color: var(--danger); }

/* Forms & Inputs */
.form-group { margin-bottom: 20px; }
.form-group label { display: block; margin-bottom: 8px; font-size: 0.875rem; color: var(--text-secondary); }
.form-control {
    width: 100%;
    background: rgba(0,0,0,0.2);
    border: 1px solid var(--border-light);
    color: var(--text-primary);
    padding: 12px 16px;
    border-radius: 8px;
    font-family: inherit;
    font-size: 0.95rem;
    transition: var(--transition-fast);
}
.form-control:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.2);
}
.input-with-icon { position: relative; }
.input-with-icon .icon-btn {
    position: absolute; right: 12px; top: 50%; transform: translateY(-50%);
    background: none; border: none; color: var(--text-secondary); cursor: pointer;
}
.checkbox-group { display: flex; align-items: center; gap: 10px; }
.help-text { display: block; margin-top: 6px; font-size: 0.75rem; color: var(--text-secondary); }

/* Buttons */
.btn {
    display: inline-flex; align-items: center; justify-content: center; gap: 8px;
    padding: 10px 20px; border-radius: 8px; font-weight: 500;
    cursor: pointer; transition: var(--transition-normal); border: none; font-family: inherit;
}
.btn-primary { background: linear-gradient(135deg, var(--primary) 0%, #4f46e5 100%); color: white; box-shadow: 0 4px 15px rgba(99, 102, 241, 0.3); }
.btn-primary:hover { background: linear-gradient(135deg, var(--primary-hover) 0%, var(--primary) 100%); transform: translateY(-2px); box-shadow: 0 6px 20px rgba(99, 102, 241, 0.4); }
.btn-secondary { background: rgba(255,255,255,0.1); color: var(--text-primary); border: 1px solid var(--border-light); }
.btn-secondary:hover { background: rgba(255,255,255,0.15); }
.btn-danger { background: rgba(239, 68, 68, 0.2); color: var(--danger); border: 1px solid rgba(239,68,68,0.3); }
.btn-danger:hover { background: var(--danger); color: white; }
.btn-success { background: rgba(16, 185, 129, 0.2); color: var(--success); border: 1px solid rgba(16,185,129,0.3); }
.btn-success:hover { background: var(--success); color: white; }
.btn-warning { background: rgba(245, 158, 11, 0.2); color: var(--warning); border: 1px solid rgba(245,158,11,0.3); }
.btn-warning:hover { background: var(--warning); color: white; }
.btn-sm { padding: 6px 12px; font-size: 0.8rem; }
.btn-icon { padding: 8px; border-radius: 8px; background: rgba(255,255,255,0.05); border: 1px solid var(--border-light); color: var(--text-secondary); cursor: pointer; transition: 0.2s; }
.btn-icon:hover { background: rgba(255,255,255,0.1); color: var(--text-primary); }
.w-100 { width: 100%; }

/* Filters Bar */
.filter-bar {
    display: flex; flex-wrap: wrap; gap: 16px; align-items: flex-end;
}
.filter-bar .form-group { margin-bottom: 0; flex: 1; min-width: 150px; }
.filter-actions { display: flex; gap: 10px; }

/* Accounts Grid */
.accounts-grid {
    display: grid; grid-template-columns: repeat(auto-fill, minmax(320px, 1fr)); gap: 24px;
}
.account-card {
    background: var(--card-bg); border: 1px solid var(--border-light);
    border-radius: 16px; padding: 24px; transition: var(--transition-normal);
    position: relative; overflow: hidden;
}
.account-card:hover { transform: translateY(-5px); box-shadow: var(--glow-shadow); border-color: var(--border-color); }
.account-color-strip { position: absolute; top: 0; left: 0; right: 0; height: 6px; }
.acc-number { font-family: 'JetBrains Mono', monospace; font-size: 1.25rem; font-weight: 700; letter-spacing: 1px; margin: 12px 0 4px; }
.acc-label { color: var(--text-secondary); font-size: 0.9rem; margin-bottom: 20px; }
.acc-stats { display: flex; justify-content: space-between; border-top: 1px solid var(--border-light); padding-top: 16px; margin-bottom: 16px; }
.acc-stat-item { display: flex; flex-direction: column; }
.acc-stat-lbl { font-size: 0.75rem; color: var(--text-secondary); }
.acc-stat-val { font-family: 'JetBrains Mono', monospace; font-weight: 600; font-size: 0.95rem; }
.acc-actions { display: flex; gap: 10px; justify-content: flex-end; }

/* Modal */
.modal {
    position: fixed; top: 0; left: 0; width: 100%; height: 100%;
    background: rgba(0,0,0,0.6); backdrop-filter: blur(5px);
    display: flex; align-items: center; justify-content: center;
    z-index: 1000; opacity: 0; pointer-events: none; transition: 0.3s ease;
}
.modal.active { opacity: 1; pointer-events: auto; }
.modal-content {
    width: 100%; max-width: 500px; transform: translateY(-20px); transition: 0.3s ease;
}
.modal.active .modal-content { transform: translateY(0); }
.modal-header { display: flex; justify-content: space-between; align-items: center; margin-bottom: 20px; }
.close-modal { background: none; border: none; color: var(--text-secondary); font-size: 1.2rem; cursor: pointer; }
.close-modal:hover { color: var(--danger); }

/* Toasts */
.toast-container { position: fixed; bottom: 24px; right: 24px; z-index: 9999; display: flex; flex-direction: column; gap: 12px; }
.toast {
    min-width: 300px; padding: 16px 20px; border-radius: 12px;
    background: var(--surface); border: 1px solid var(--border-light);
    color: var(--text-primary); box-shadow: 0 10px 25px rgba(0,0,0,0.3);
    display: flex; align-items: flex-start; gap: 12px;
    transform: translateX(120%); transition: transform 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}
.toast.show { transform: translateX(0); }
.toast-icon { font-size: 1.25rem; margin-top: 2px; }
.toast.success .toast-icon { color: var(--success); }
.toast.error .toast-icon { color: var(--danger); }
.toast.warning .toast-icon { color: var(--warning); }
.toast.info .toast-icon { color: var(--primary); }
.toast-content h4 { margin-bottom: 4px; font-size: 0.95rem; }
.toast-content p { font-size: 0.85rem; color: var(--text-secondary); }

/* Utility Classes */
.hidden { display: none !important; }
.flex-between { display: flex; justify-content: space-between; align-items: center; }
.mt-2 { margin-top: 8px; } .mt-3 { margin-top: 16px; } .mt-4 { margin-top: 24px; }
.mb-4 { margin-bottom: 24px; } .mb-5 { margin-bottom: 32px; }
.pt-4 { padding-top: 24px; } .border-top { border-top: 1px solid var(--border-light); }

/* API Docs Styling */
.api-base-url { padding: 12px; background: rgba(0,0,0,0.3); border-radius: 8px; margin-top: 12px; font-family: 'JetBrains Mono', monospace; border: 1px dashed var(--border-color); }
pre { background: #0d1117; padding: 16px; border-radius: 8px; overflow-x: auto; border: 1px solid #30363d; margin: 12px 0; }
code { font-family: 'JetBrains Mono', monospace; font-size: 0.85rem; color: #e6edf3; }
.api-endpoint { border: 1px solid var(--border-light); border-radius: 12px; margin-bottom: 16px; overflow: hidden; background: rgba(255,255,255,0.02); }
.api-endpoint-header { display: flex; align-items: center; gap: 16px; padding: 16px; cursor: pointer; }
.api-endpoint-header:hover { background: rgba(255,255,255,0.05); }
.method-badge { padding: 4px 8px; border-radius: 6px; font-weight: 700; font-size: 0.8rem; min-width: 60px; text-align: center; }
.method-GET { background: rgba(16,185,129,0.2); color: var(--success); }
.method-POST { background: rgba(59,130,246,0.2); color: #3b82f6; }
.method-DELETE { background: rgba(239,68,68,0.2); color: var(--danger); }
.endpoint-path { font-family: 'JetBrains Mono', monospace; font-weight: 600; flex: 1; }
.api-endpoint-body { padding: 20px; border-top: 1px solid var(--border-light); display: none; }
.api-endpoint.open .api-endpoint-body { display: block; }

/* Status Indicators */
.service-control { text-align: center; padding: 20px; }
.service-status { display: flex; flex-direction: column; align-items: center; gap: 16px; margin-bottom: 24px; }
.status-indicator.big { width: 64px; height: 64px; }
.status-indicator.big.connected { box-shadow: 0 0 30px var(--success-glow); }
.status-indicator.big.disconnected { box-shadow: 0 0 30px var(--danger-glow); }

/* Animations */
@keyframes fadeIn { from { opacity: 0; transform: translateY(10px); } to { opacity: 1; transform: translateY(0); } }
@keyframes pulse-green { 0% { box-shadow: 0 0 0 0 rgba(16,185,129,0.7); } 70% { box-shadow: 0 0 0 10px rgba(16,185,129,0); } 100% { box-shadow: 0 0 0 0 rgba(16,185,129,0); } }

/* Responsive */
@media (max-width: 768px) {
    .sidebar { transform: translateX(-100%); }
    .sidebar.open { transform: translateX(0); }
    .main-content { margin-left: 0; padding: 20px; }
    .mobile-toggle { display: block; }
    .stats-grid { grid-template-columns: 1fr; }
    .filter-bar .form-group { min-width: 100%; }
}