/* FixedBit Streams — Dark Theme */

/* ================================================================
   CSS CUSTOM PROPERTIES
   ================================================================ */
:root {
    --bg-primary: #1a1a2e;
    --bg-card: #16213e;
    --bg-accent: #0f3460;
    --highlight: #e94560;
    --text-primary: #f0f0f0;
    --text-secondary: #a0a0b8;
    --text-muted: #6b6b80;
    --border: #2a2a4a;
    --success: #2ecc71;
    --warning: #f39c12;
    --danger: #e94560;
    --info: #3498db;
    --code-bg: #0d1117;
    --sidebar-width: 240px;
    --nav-height: 60px;
    --font-mono: 'JetBrains Mono', 'Fira Code', 'Consolas', monospace;
    --font-body: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --radius: 8px;
    --radius-lg: 12px;
    --shadow: 0 4px 24px rgba(0, 0, 0, 0.3);
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.2);
    --transition: 0.2s ease;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-body);
    background: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    min-height: 100vh;
}

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

a:hover {
    color: #ff6b81;
}

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

/* ================================================================
   NAVIGATION
   ================================================================ */
.navbar {
    position: sticky;
    top: 0;
    z-index: 1000;
    background: rgba(22, 33, 62, 0.95);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border);
    height: var(--nav-height);
    display: flex;
    align-items: center;
    padding: 0 2rem;
}

.navbar-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
}

.navbar-brand {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--text-primary);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.navbar-brand .brand-dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: var(--highlight);
    display: inline-block;
}

.navbar-links {
    display: flex;
    align-items: center;
    gap: 1.5rem;
    list-style: none;
}

.navbar-links a {
    color: var(--text-secondary);
    font-size: 0.9rem;
    font-weight: 500;
    transition: color var(--transition);
}

.navbar-links a:hover,
.navbar-links a.active {
    color: var(--text-primary);
}

.navbar-toggle {
    display: none;
    background: none;
    border: none;
    color: var(--text-primary);
    font-size: 1.5rem;
    cursor: pointer;
}

/* ================================================================
   LAYOUT
   ================================================================ */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 2rem;
}

.container-narrow {
    max-width: 800px;
    margin: 0 auto;
    padding: 2rem;
}

.page-content {
    min-height: calc(100vh - var(--nav-height) - 80px);
}

/* ================================================================
   GRID
   ================================================================ */
.grid {
    display: grid;
    gap: 1.5rem;
}

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

/* ================================================================
   CARDS
   ================================================================ */
.card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 1.5rem;
    transition: transform var(--transition), box-shadow var(--transition);
}

.card:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow);
}

.card-header {
    margin-bottom: 1rem;
    padding-bottom: 0.75rem;
    border-bottom: 1px solid var(--border);
}

.card-title {
    font-size: 1.1rem;
    font-weight: 600;
}

/* Pricing Cards */
.pricing-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 2rem;
    text-align: center;
    transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
    display: flex;
    flex-direction: column;
}

.pricing-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow);
    border-color: var(--highlight);
}

.pricing-card.featured {
    border-color: var(--highlight);
    position: relative;
}

.pricing-card.featured::before {
    content: 'Popular';
    position: absolute;
    top: -12px;
    left: 50%;
    transform: translateX(-50%);
    background: var(--highlight);
    color: white;
    font-size: 0.75rem;
    font-weight: 600;
    padding: 0.2rem 1rem;
    border-radius: 20px;
}

.pricing-tier {
    font-size: 1.4rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
}

.pricing-price {
    font-size: 2.5rem;
    font-weight: 800;
    color: var(--highlight);
    margin-bottom: 0.25rem;
}

.pricing-price .currency {
    font-size: 1rem;
    font-weight: 400;
    color: var(--text-secondary);
}

.pricing-period {
    font-size: 0.85rem;
    color: var(--text-muted);
    margin-bottom: 1.5rem;
}

.pricing-features {
    list-style: none;
    text-align: left;
    flex: 1;
    margin-bottom: 1.5rem;
}

.pricing-features li {
    padding: 0.5rem 0;
    border-bottom: 1px solid var(--border);
    font-size: 0.9rem;
    color: var(--text-secondary);
}

.pricing-features li::before {
    content: '✓';
    color: var(--success);
    margin-right: 0.5rem;
    font-weight: 700;
}

/* ================================================================
   BUTTONS
   ================================================================ */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.65rem 1.5rem;
    border: none;
    border-radius: var(--radius);
    font-size: 0.9rem;
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition);
    text-decoration: none;
}

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

.btn-primary:hover {
    background: #ff6b81;
    color: white;
    transform: translateY(-1px);
}

.btn-secondary {
    background: var(--bg-accent);
    color: var(--text-primary);
}

.btn-secondary:hover {
    background: #1a4a80;
}

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

.btn-outline:hover {
    background: var(--highlight);
    color: white;
}

.btn-sm {
    padding: 0.4rem 0.9rem;
    font-size: 0.8rem;
}

.btn-lg {
    padding: 0.85rem 2rem;
    font-size: 1rem;
}

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

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

.btn-warning {
    background: var(--warning);
    color: #1a1a2e;
}

/* ================================================================
   CODE BLOCKS
   ================================================================ */
.code-block {
    background: var(--code-bg);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 1.25rem;
    font-family: var(--font-mono);
    font-size: 0.85rem;
    line-height: 1.8;
    overflow-x: auto;
    position: relative;
    color: var(--text-primary);
}

.code-block .copy-btn {
    position: absolute;
    top: 0.5rem;
    right: 0.5rem;
    background: var(--bg-accent);
    color: var(--text-secondary);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 0.3rem 0.7rem;
    font-size: 0.75rem;
    cursor: pointer;
    transition: all var(--transition);
}

.code-block .copy-btn:hover {
    background: var(--highlight);
    color: white;
    border-color: var(--highlight);
}

.code-inline {
    background: var(--code-bg);
    padding: 0.15rem 0.4rem;
    border-radius: 4px;
    font-family: var(--font-mono);
    font-size: 0.85em;
}

pre code {
    font-family: var(--font-mono);
}

.code-line {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.25rem 0;
}

.code-line .label {
    color: var(--text-muted);
    min-width: 100px;
}

.code-line .value {
    color: var(--success);
    flex: 1;
}

.code-line .copy-field-btn {
    background: none;
    border: 1px solid var(--border);
    color: var(--text-muted);
    padding: 0.15rem 0.5rem;
    border-radius: 4px;
    font-size: 0.7rem;
    cursor: pointer;
    margin-left: 0.5rem;
    transition: all var(--transition);
}

.code-line .copy-field-btn:hover {
    border-color: var(--highlight);
    color: var(--highlight);
}

/* ================================================================
   TABS
   ================================================================ */
.tabs {
    display: flex;
    gap: 0;
    border-bottom: 2px solid var(--border);
    margin-bottom: 1.5rem;
}

.tab {
    padding: 0.75rem 1.5rem;
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--text-muted);
    cursor: pointer;
    border-bottom: 2px solid transparent;
    margin-bottom: -2px;
    transition: all var(--transition);
    background: none;
    border-top: none;
    border-left: none;
    border-right: none;
}

.tab:hover {
    color: var(--text-primary);
}

.tab.active {
    color: var(--highlight);
    border-bottom-color: var(--highlight);
}

.tab-panel {
    display: none;
}

.tab-panel.active {
    display: block;
}

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

.form-label {
    display: block;
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--text-secondary);
    margin-bottom: 0.4rem;
}

.form-input,
.form-select {
    width: 100%;
    padding: 0.65rem 1rem;
    background: var(--code-bg);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    color: var(--text-primary);
    font-size: 0.9rem;
    transition: border-color var(--transition);
}

.form-input:focus,
.form-select:focus {
    outline: none;
    border-color: var(--highlight);
}

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

.form-hint {
    font-size: 0.8rem;
    color: var(--text-muted);
    margin-top: 0.3rem;
}

.form-error {
    font-size: 0.8rem;
    color: var(--danger);
    margin-top: 0.3rem;
}

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

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

thead th {
    text-align: left;
    padding: 0.75rem 1rem;
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    border-bottom: 1px solid var(--border);
}

tbody td {
    padding: 0.75rem 1rem;
    font-size: 0.9rem;
    border-bottom: 1px solid var(--border);
}

tbody tr:hover {
    background: rgba(15, 52, 96, 0.3);
}

/* ================================================================
   STATUS BADGES
   ================================================================ */
.badge {
    display: inline-flex;
    align-items: center;
    gap: 0.3rem;
    padding: 0.2rem 0.7rem;
    border-radius: 20px;
    font-size: 0.75rem;
    font-weight: 600;
}

.badge-active, .badge-success {
    background: rgba(46, 204, 113, 0.15);
    color: var(--success);
}

.badge-stopped, .badge-offline {
    background: rgba(160, 160, 184, 0.15);
    color: var(--text-muted);
}

.badge-suspended, .badge-danger {
    background: rgba(233, 69, 96, 0.15);
    color: var(--danger);
}

.badge-warning {
    background: rgba(243, 156, 18, 0.15);
    color: var(--warning);
}

.badge-info {
    background: rgba(52, 152, 219, 0.15);
    color: var(--info);
}

/* ================================================================
   HERO SECTION
   ================================================================ */
.hero {
    text-align: center;
    padding: 5rem 2rem 4rem;
    max-width: 800px;
    margin: 0 auto;
}

.hero h1 {
    font-size: 3rem;
    font-weight: 800;
    margin-bottom: 1rem;
    line-height: 1.15;
    background: linear-gradient(135deg, var(--text-primary), var(--highlight));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero p {
    font-size: 1.15rem;
    color: var(--text-secondary);
    max-width: 600px;
    margin: 0 auto;
    line-height: 1.7;
}

/* ================================================================
   FEATURES GRID
   ================================================================ */
.feature-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 1.5rem;
    transition: border-color var(--transition);
}

.feature-card:hover {
    border-color: var(--highlight);
}

.feature-icon {
    font-size: 1.5rem;
    margin-bottom: 0.75rem;
}

.feature-card h3 {
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
}

.feature-card p {
    font-size: 0.85rem;
    color: var(--text-secondary);
    line-height: 1.5;
}

/* ================================================================
   SECTION HEADINGS
   ================================================================ */
.section {
    padding: 4rem 0;
}

.section-title {
    font-size: 2rem;
    font-weight: 700;
    text-align: center;
    margin-bottom: 0.5rem;
}

.section-subtitle {
    font-size: 1rem;
    color: var(--text-secondary);
    text-align: center;
    margin-bottom: 3rem;
}

/* ================================================================
   STEPS (HOW IT WORKS)
   ================================================================ */
.steps {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 2rem;
    counter-reset: step;
}

.step {
    text-align: center;
    position: relative;
}

.step-number {
    width: 48px;
    height: 48px;
    border-radius: 50%;
    background: var(--bg-accent);
    color: var(--highlight);
    font-size: 1.2rem;
    font-weight: 700;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1rem;
    border: 2px solid var(--highlight);
}

.step h3 {
    font-size: 1rem;
    margin-bottom: 0.5rem;
}

.step p {
    font-size: 0.85rem;
    color: var(--text-secondary);
}

/* ================================================================
   SOFTWARE LIST
   ================================================================ */
.software-list {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 1rem;
    padding: 1rem 0;
}

.software-badge {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 0.5rem 1.25rem;
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--text-secondary);
    transition: all var(--transition);
}

.software-badge:hover {
    border-color: var(--highlight);
    color: var(--text-primary);
}

/* ================================================================
   FOOTER
   ================================================================ */
.footer {
    text-align: center;
    padding: 2rem;
    border-top: 1px solid var(--border);
    color: var(--text-muted);
    font-size: 0.85rem;
}

/* ================================================================
   DASHBOARD LAYOUT
   ================================================================ */
.dashboard-layout {
    display: flex;
    min-height: calc(100vh - var(--nav-height));
}

.sidebar {
    width: var(--sidebar-width);
    background: var(--bg-card);
    border-right: 1px solid var(--border);
    padding: 1.5rem 0;
    flex-shrink: 0;
}

.sidebar-nav {
    list-style: none;
}

.sidebar-nav li a {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.7rem 1.5rem;
    color: var(--text-secondary);
    font-size: 0.9rem;
    transition: all var(--transition);
    border-left: 3px solid transparent;
}

.sidebar-nav li a:hover {
    background: rgba(15, 52, 96, 0.3);
    color: var(--text-primary);
}

.sidebar-nav li a.active {
    color: var(--highlight);
    border-left-color: var(--highlight);
    background: rgba(233, 69, 96, 0.08);
}

.dashboard-content {
    flex: 1;
    padding: 2rem;
    max-width: calc(100% - var(--sidebar-width));
}

.dashboard-header {
    margin-bottom: 2rem;
}

.dashboard-header h1 {
    font-size: 1.5rem;
    font-weight: 700;
}

.dashboard-header p {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

/* ================================================================
   GAUGE METER (SVG)
   ================================================================ */
.gauge-container {
    text-align: center;
    padding: 1rem;
}

.gauge-svg {
    width: 200px;
    height: 120px;
}

.gauge-bg {
    fill: none;
    stroke: var(--border);
    stroke-width: 12;
    stroke-linecap: round;
}

.gauge-fill {
    fill: none;
    stroke: var(--highlight);
    stroke-width: 12;
    stroke-linecap: round;
    transition: stroke-dashoffset 0.6s ease;
}

.gauge-text {
    fill: var(--text-primary);
    font-size: 1.8rem;
    font-weight: 700;
    text-anchor: middle;
}

.gauge-label {
    fill: var(--text-muted);
    font-size: 0.75rem;
    text-anchor: middle;
}

/* ================================================================
   SPARKLINE
   ================================================================ */
.sparkline-container {
    background: var(--code-bg);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 0.75rem;
    height: 80px;
}

/* ================================================================
   LIVE STATUS INDICATOR
   ================================================================ */
.status-dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    display: inline-block;
    margin-right: 0.5rem;
}

.status-dot.online {
    background: var(--success);
    animation: pulse 2s infinite;
}

.status-dot.offline {
    background: var(--text-muted);
}

.status-text {
    font-weight: 600;
    font-size: 0.9rem;
}

/* ================================================================
   PROGRESS BAR
   ================================================================ */
.progress-bar {
    width: 100%;
    height: 8px;
    background: var(--border);
    border-radius: 4px;
    overflow: hidden;
}

.progress-fill {
    height: 100%;
    border-radius: 4px;
    transition: width 0.6s ease;
    background: var(--highlight);
}

.progress-fill.success {
    background: var(--success);
}

.progress-fill.warning {
    background: var(--warning);
}

.progress-fill.danger {
    background: var(--danger);
}

/* ================================================================
   STAT CARDS (DASHBOARD OVERVIEW)
   ================================================================ */
.stat-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 1.5rem;
}

.stat-card .stat-label {
    font-size: 0.8rem;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: 0.5rem;
}

.stat-card .stat-value {
    font-size: 2rem;
    font-weight: 700;
}

.stat-card .stat-sub {
    font-size: 0.8rem;
    color: var(--text-secondary);
    margin-top: 0.25rem;
}

/* ================================================================
   TOAST NOTIFICATIONS
   ================================================================ */
.toast-container {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    z-index: 9999;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.toast {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 0.75rem 1.25rem;
    font-size: 0.85rem;
    box-shadow: var(--shadow);
    animation: fadeIn 0.3s ease;
    max-width: 350px;
}

.toast.success {
    border-left: 3px solid var(--success);
}

.toast.error {
    border-left: 3px solid var(--danger);
}

.toast.info {
    border-left: 3px solid var(--info);
}

/* ================================================================
   ANIMATIONS
   ================================================================ */
@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.5; }
}

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

@keyframes gaugeAnim {
    from { stroke-dashoffset: 251; }
}

.fade-in {
    animation: fadeIn 0.4s ease;
}

/* ================================================================
   PLATFORM BADGES
   ================================================================ */
.platform-badge {
    display: inline-block;
    padding: 0.15rem 0.5rem;
    border-radius: 4px;
    font-size: 0.7rem;
    font-weight: 600;
    background: var(--bg-accent);
    color: var(--text-secondary);
    margin-left: 0.25rem;
}

/* ================================================================
   GUIDE SPECIFIC
   ================================================================ */
.connection-box {
    background: var(--code-bg);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 1.5rem;
    margin-bottom: 2rem;
}

.connection-box h3 {
    font-size: 1rem;
    margin-bottom: 1rem;
    color: var(--highlight);
}

.guide-steps {
    counter-reset: guide-step;
}

.guide-steps li {
    counter-increment: guide-step;
    margin-bottom: 1rem;
    padding-left: 2.5rem;
    position: relative;
    line-height: 1.6;
}

.guide-steps li::before {
    content: counter(guide-step);
    position: absolute;
    left: 0;
    top: 0;
    width: 1.75rem;
    height: 1.75rem;
    border-radius: 50%;
    background: var(--bg-accent);
    color: var(--highlight);
    font-weight: 700;
    font-size: 0.8rem;
    display: flex;
    align-items: center;
    justify-content: center;
}

/* ================================================================
   ADMIN PANEL ADJUSTMENTS
   ================================================================ */
.admin-summary-cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1rem;
    margin-bottom: 2rem;
}

.health-indicator {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
}

.health-dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
}

.health-dot.ok {
    background: var(--success);
}

.health-dot.error {
    background: var(--danger);
}

.health-dot.unknown {
    background: var(--warning);
}

/* ================================================================
   API KEY FIELD
   ================================================================ */
.api-key-field {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    background: var(--code-bg);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 0.65rem 1rem;
    font-family: var(--font-mono);
    font-size: 0.85rem;
}

.api-key-field .key-value {
    flex: 1;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

/* ================================================================
   RESPONSIVE
   ================================================================ */
@media (max-width: 1024px) {
    .grid-3 { grid-template-columns: repeat(2, 1fr); }
    .grid-4 { grid-template-columns: repeat(2, 1fr); }
    .steps { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
    .navbar-links { display: none; }
    .navbar-links.open {
        display: flex;
        flex-direction: column;
        position: absolute;
        top: var(--nav-height);
        left: 0;
        right: 0;
        background: var(--bg-card);
        border-bottom: 1px solid var(--border);
        padding: 1rem 2rem;
    }
    .navbar-toggle { display: block; }

    .hero h1 { font-size: 2rem; }
    .hero p { font-size: 1rem; }

    .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; }
    .steps { grid-template-columns: 1fr 1fr; }

    .dashboard-layout { flex-direction: column; }
    .sidebar {
        width: 100%;
        border-right: none;
        border-bottom: 1px solid var(--border);
        padding: 0.75rem 0;
    }
    .sidebar-nav {
        display: flex;
        overflow-x: auto;
        padding: 0 0.5rem;
    }
    .sidebar-nav li a {
        white-space: nowrap;
        padding: 0.5rem 1rem;
        border-left: none;
        border-bottom: 3px solid transparent;
    }
    .sidebar-nav li a.active {
        border-left: none;
        border-bottom-color: var(--highlight);
    }
    .dashboard-content {
        max-width: 100%;
        padding: 1rem;
    }

    .container { padding: 1rem; }
}

@media (max-width: 480px) {
    .hero h1 { font-size: 1.6rem; }
    .steps { grid-template-columns: 1fr; }
    .pricing-price { font-size: 2rem; }
}

/* ================================================================
   UTILITY
   ================================================================ */
.text-center { text-align: center; }
.text-muted { color: var(--text-muted); }
.text-success { color: var(--success); }
.text-danger { color: var(--danger); }
.text-warning { color: var(--warning); }
.mt-1 { margin-top: 0.5rem; }
.mt-2 { margin-top: 1rem; }
.mt-3 { margin-top: 1.5rem; }
.mt-4 { margin-top: 2rem; }
.mb-1 { margin-bottom: 0.5rem; }
.mb-2 { margin-bottom: 1rem; }
.mb-3 { margin-bottom: 1.5rem; }
.mb-4 { margin-bottom: 2rem; }
.flex { display: flex; }
.flex-center { display: flex; align-items: center; justify-content: center; }
.flex-between { display: flex; align-items: center; justify-content: space-between; }
.gap-1 { gap: 0.5rem; }
.gap-2 { gap: 1rem; }
.gap-3 { gap: 1.5rem; }
.hidden { display: none; }