/* ========================================
   PREMIUM DARK LIQUID GLASS DESIGN SYSTEM
   ======================================== */

/* ---------- CSS Variables ---------- */
:root {
    /* Backgrounds */
    --bg-base: #0a0a0f;
    --bg-depth: #0f0f1a;
    --bg-surface: rgba(20, 20, 35, 0.6);
    --bg-elevated: rgba(30, 30, 50, 0.5);
    
    /* Glass Surfaces */
    --glass: rgba(255, 255, 255, 0.04);
    --glass-strong: rgba(255, 255, 255, 0.08);
    --glass-hover: rgba(255, 255, 255, 0.12);
    --glass-border: rgba(255, 255, 255, 0.06);
    --glass-border-active: rgba(255, 255, 255, 0.12);
    
    /* Accent Colors */
    --accent: #6366f1;
    --accent-secondary: #8b5cf6;
    --accent-soft: rgba(99, 102, 241, 0.15);
    --accent-glow: rgba(99, 102, 241, 0.2);
    
    /* Status Colors */
    --success: #22c55e;
    --success-soft: rgba(34, 197, 94, 0.15);
    --warning: #f59e0b;
    --warning-soft: rgba(245, 158, 11, 0.15);
    --danger: #ef4444;
    --danger-soft: rgba(239, 68, 68, 0.15);
    --info: #3b82f6;
    --info-soft: rgba(59, 130, 246, 0.15);
    
    /* Text Colors */
    --text-primary: #e8e8f0;
    --text-secondary: #a0a0b8;
    --text-muted: #6a6a82;
    --text-inverse: #0a0a0f;
    
    /* Borders */
    --border-subtle: rgba(255, 255, 255, 0.06);
    --border-active: rgba(255, 255, 255, 0.12);
    
    /* Radius */
    --radius-sm: 6px;
    --radius-md: 10px;
    --radius-lg: 16px;
    --radius-xl: 24px;
    
    /* Shadows */
    --shadow-sm: 0 4px 20px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 8px 40px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 16px 60px rgba(0, 0, 0, 0.5);
    --shadow-glow: 0 0 40px rgba(99, 102, 241, 0.1);
    
    /* Transitions */
    --transition-fast: 150ms ease-out;
    --transition-normal: 250ms ease-out;
    --transition-slow: 400ms ease-out;
    
    /* Spacing */
    --space-1: 4px;
    --space-2: 8px;
    --space-3: 12px;
    --space-4: 16px;
    --space-5: 20px;
    --space-6: 24px;
    --space-8: 32px;
    --space-10: 40px;
    --space-12: 48px;
    --space-16: 64px;
}

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

html {
    scroll-behavior: smooth;
}

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

/* ---------- Liquid Background ---------- */
body::before {
    content: '';
    position: fixed;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: 
        radial-gradient(ellipse at 20% 30%, rgba(99, 102, 241, 0.06) 0%, transparent 50%),
        radial-gradient(ellipse at 80% 70%, rgba(139, 92, 246, 0.05) 0%, transparent 50%),
        radial-gradient(ellipse at 50% 50%, rgba(59, 130, 246, 0.03) 0%, transparent 70%);
    z-index: -1;
    pointer-events: none;
    animation: liquidAtmosphere 60s ease-in-out infinite alternate;
}

@keyframes liquidAtmosphere {
    0% { transform: translate(0, 0) scale(1); }
    50% { transform: translate(-2%, 2%) scale(1.02); }
    100% { transform: translate(2%, -2%) scale(0.98); }
}

/* ---------- Glass Mixin ---------- */
.glass {
    background: var(--glass);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
}

.glass-strong {
    background: var(--glass-strong);
    backdrop-filter: blur(24px);
    -webkit-backdrop-filter: blur(24px);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
}

/* ---------- Typography ---------- */
h1 {
    font-size: 2.5rem;
    font-weight: 700;
    line-height: 1.2;
    letter-spacing: -0.02em;
    background: linear-gradient(135deg, var(--text-primary) 60%, var(--text-secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

h2 {
    font-size: 2rem;
    font-weight: 600;
    line-height: 1.3;
    letter-spacing: -0.01em;
    color: var(--text-primary);
}

h3 {
    font-size: 1.25rem;
    font-weight: 600;
    line-height: 1.4;
    color: var(--text-primary);
}

h4 {
    font-size: 1rem;
    font-weight: 500;
    color: var(--text-secondary);
}

p {
    color: var(--text-secondary);
    font-size: 1rem;
    line-height: 1.7;
}

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

a:hover {
    color: var(--accent-secondary);
}

code, .mono {
    font-family: "SF Mono", "Fira Code", "Consolas", monospace;
    font-size: 0.85rem;
    color: var(--text-secondary);
}

/* ---------- Container ---------- */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--space-6);
}

/* ---------- Buttons ---------- */
.btn-primary {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-2);
    padding: 10px 24px;
    background: linear-gradient(135deg, var(--accent), var(--accent-secondary));
    color: #fff;
    border: none;
    border-radius: var(--radius-md);
    font-size: 0.9rem;
    font-weight: 500;
    cursor: pointer;
    transition: all var(--transition-fast);
    position: relative;
    overflow: hidden;
}

.btn-primary:hover {
    transform: translateY(-1px);
    box-shadow: 0 4px 20px var(--accent-glow);
}

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

.btn-primary:disabled {
    opacity: 0.5;
    cursor: not-allowed;
    transform: none;
}

.btn-primary.btn-block {
    width: 100%;
    justify-content: center;
}

.btn-primary.btn-sm {
    padding: 6px 16px;
    font-size: 0.8rem;
}

.btn-secondary {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-2);
    padding: 10px 24px;
    background: var(--glass);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    color: var(--text-primary);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-md);
    font-size: 0.9rem;
    font-weight: 500;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.btn-secondary:hover {
    background: var(--glass-hover);
    border-color: var(--glass-border-active);
}

.btn-secondary:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.btn-secondary.btn-sm {
    padding: 6px 16px;
    font-size: 0.8rem;
}

.btn-danger {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-2);
    padding: 10px 24px;
    background: var(--danger-soft);
    color: var(--danger);
    border: 1px solid rgba(239, 68, 68, 0.2);
    border-radius: var(--radius-md);
    font-size: 0.9rem;
    font-weight: 500;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.btn-danger:hover {
    background: rgba(239, 68, 68, 0.2);
    border-color: rgba(239, 68, 68, 0.3);
}

.btn-danger.btn-sm {
    padding: 6px 16px;
    font-size: 0.8rem;
}

.btn-telegram {
    display: inline-flex;
    align-items: center;
    gap: var(--space-3);
    padding: 12px 28px;
    background: #0088cc;
    color: #fff;
    border: none;
    border-radius: var(--radius-md);
    font-size: 0.95rem;
    font-weight: 500;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.btn-telegram:hover {
    background: #0099dd;
    transform: translateY(-1px);
    box-shadow: 0 4px 20px rgba(0, 136, 204, 0.3);
}

/* ---------- Badges ---------- */
.badge {
    display: inline-flex;
    align-items: center;
    padding: 2px 12px;
    border-radius: 20px;
    font-size: 0.75rem;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.03em;
    background: var(--glass);
    border: 1px solid var(--glass-border);
    color: var(--text-secondary);
}

.badge-success {
    background: var(--success-soft);
    color: var(--success);
    border-color: rgba(34, 197, 94, 0.2);
}

.badge-warning {
    background: var(--warning-soft);
    color: var(--warning);
    border-color: rgba(245, 158, 11, 0.2);
}

.badge-danger {
    background: var(--danger-soft);
    color: var(--danger);
    border-color: rgba(239, 68, 68, 0.2);
}

.badge-info {
    background: var(--info-soft);
    color: var(--info);
    border-color: rgba(59, 130, 246, 0.2);
}

.badge-secondary {
    background: var(--glass);
    color: var(--text-muted);
    border-color: var(--glass-border);
}

/* ---------- Forms ---------- */
.form-group {
    margin-bottom: var(--space-5);
}

.form-group label {
    display: block;
    margin-bottom: var(--space-2);
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--text-secondary);
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 10px 14px;
    background: var(--glass);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    color: var(--text-primary);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-md);
    font-size: 0.95rem;
    font-family: inherit;
    transition: all var(--transition-fast);
    outline: none;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    border-color: var(--accent);
    box-shadow: 0 0 0 3px var(--accent-soft);
}

.form-group input:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.form-group textarea {
    resize: vertical;
    min-height: 80px;
}

.field-hint {
    display: block;
    margin-top: var(--space-2);
    font-size: 0.8rem;
    color: var(--text-muted);
}

.field-error {
    display: block;
    margin-top: var(--space-2);
    font-size: 0.8rem;
    color: var(--danger);
}

.password-wrapper {
    position: relative;
}

.password-wrapper input {
    padding-right: 44px;
}

.password-toggle {
    position: absolute;
    right: 12px;
    top: 50%;
    transform: translateY(-50%);
    background: none;
    border: none;
    color: var(--text-muted);
    cursor: pointer;
    padding: 4px;
    border-radius: var(--radius-sm);
    transition: all var(--transition-fast);
}

.password-toggle:hover {
    color: var(--text-secondary);
}

.password-strength {
    margin-top: var(--space-3);
}

.strength-bar {
    display: flex;
    gap: 4px;
    height: 4px;
    margin-bottom: var(--space-2);
}

.strength-segment {
    flex: 1;
    background: var(--glass-border);
    border-radius: 2px;
    transition: background var(--transition-fast);
}

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

.strength-text #strengthLabel {
    font-weight: 500;
}

.checkbox {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    cursor: pointer;
    color: var(--text-secondary);
}

.checkbox input[type="checkbox"] {
    width: 16px;
    height: 16px;
    accent-color: var(--accent);
    cursor: pointer;
}

/* ---------- Flash Messages ---------- */
.flash-message {
    padding: var(--space-4) var(--space-6);
    border-radius: var(--radius-md);
    margin-bottom: var(--space-6);
    background: var(--glass);
    border: 1px solid var(--glass-border);
    color: var(--text-primary);
}

.flash-success {
    border-color: rgba(34, 197, 94, 0.3);
    background: var(--success-soft);
    color: var(--success);
}

.flash-error {
    border-color: rgba(239, 68, 68, 0.3);
    background: var(--danger-soft);
    color: var(--danger);
}

/* ---------- Tables ---------- */
.dashboard-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.9rem;
}

.dashboard-table thead th {
    padding: var(--space-3) var(--space-4);
    text-align: left;
    font-weight: 500;
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.04em;
    color: var(--text-muted);
    border-bottom: 1px solid var(--glass-border);
}

.dashboard-table tbody td {
    padding: var(--space-3) var(--space-4);
    border-bottom: 1px solid var(--glass-border);
    vertical-align: middle;
}

.dashboard-table tbody tr:hover {
    background: var(--glass);
}

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

.dashboard-table .amount.positive {
    color: var(--success);
}

.dashboard-table .amount.negative {
    color: var(--danger);
}

.method-badge {
    display: inline-block;
    padding: 2px 8px;
    border-radius: var(--radius-sm);
    font-size: 0.7rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.04em;
}

.method-get {
    background: var(--info-soft);
    color: var(--info);
}

.method-post {
    background: var(--success-soft);
    color: var(--success);
}

.method-put {
    background: var(--warning-soft);
    color: var(--warning);
}

.method-delete {
    background: var(--danger-soft);
    color: var(--danger);
}

.status-code.success {
    color: var(--success);
}

.status-code.error {
    color: var(--danger);
}

/* ---------- Empty State ---------- */
.empty-state {
    text-align: center;
    padding: var(--space-12) var(--space-6);
    border-radius: var(--radius-lg);
    background: var(--glass);
    border: 1px solid var(--glass-border);
}

.empty-state svg {
    color: var(--text-muted);
    margin-bottom: var(--space-4);
}

.empty-state h3 {
    margin-bottom: var(--space-2);
}

.empty-state p {
    margin-bottom: var(--space-4);
}

/* ---------- Modals ---------- */
.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 1000;
    align-items: center;
    justify-content: center;
}

.modal.active {
    display: flex;
}

.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.7);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    cursor: pointer;
}

.modal-content {
    position: relative;
    width: 90%;
    max-width: 560px;
    max-height: 90vh;
    overflow-y: auto;
    padding: var(--space-6);
    background: rgba(15, 15, 26, 0.9);
    backdrop-filter: blur(30px);
    -webkit-backdrop-filter: blur(30px);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    z-index: 1;
    animation: modalIn 250ms ease-out;
}

@keyframes modalIn {
    from {
        opacity: 0;
        transform: scale(0.95) translateY(-10px);
    }
    to {
        opacity: 1;
        transform: scale(1) translateY(0);
    }
}

.modal-content.danger {
    border-color: rgba(239, 68, 68, 0.3);
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--space-5);
}

.modal-header h2 {
    font-size: 1.25rem;
}

.modal-close {
    background: none;
    border: none;
    color: var(--text-muted);
    font-size: 1.5rem;
    cursor: pointer;
    padding: var(--space-2);
    border-radius: var(--radius-sm);
    transition: all var(--transition-fast);
}

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

.modal-actions {
    display: flex;
    gap: var(--space-3);
    justify-content: flex-end;
    margin-top: var(--space-5);
    padding-top: var(--space-4);
    border-top: 1px solid var(--glass-border);
}

.danger-text {
    color: var(--danger) !important;
}

/* ---------- Responsive ---------- */
@media (max-width: 768px) {
    h1 {
        font-size: 1.75rem;
    }
    
    h2 {
        font-size: 1.5rem;
    }
    
    .container {
        padding: 0 var(--space-4);
    }
    
    .modal-content {
        width: 95%;
        padding: var(--space-4);
        max-height: 95vh;
    }
    
    .dashboard-table {
        font-size: 0.8rem;
    }
    
    .dashboard-table thead th,
    .dashboard-table tbody td {
        padding: var(--space-2) var(--space-3);
    }
    
    .btn-primary,
    .btn-secondary,
    .btn-danger {
        padding: 8px 16px;
        font-size: 0.8rem;
    }
}

@media (max-width: 480px) {
    .stats-grid {
        grid-template-columns: 1fr 1fr !important;
    }
    
    .filter-group {
        min-width: 100% !important;
    }
}

/* ---------- Utilities ---------- */
.text-center { text-align: center; }
.text-muted { color: var(--text-muted); }
.text-secondary { color: var(--text-secondary); }
.mt-2 { margin-top: var(--space-2); }
.mt-4 { margin-top: var(--space-4); }
.mt-6 { margin-top: var(--space-6); }
.mb-2 { margin-bottom: var(--space-2); }
.mb-4 { margin-bottom: var(--space-4); }
.mb-6 { margin-bottom: var(--space-6); }
.flex { display: flex; }
.flex-center { display: flex; align-items: center; justify-content: center; }
.gap-2 { gap: var(--space-2); }
.gap-3 { gap: var(--space-3); }
.gap-4 { gap: var(--space-4); }
.w-full { width: 100%; }
.relative { position: relative; }