@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&display=swap');

:root {
    --bg-primary: #0a0a0b;
    --bg-secondary: #111113;
    --bg-tertiary: #18181b;
    --border-color: #27272a;
    --text-primary: #fafafa;
    --text-secondary: #a1a1aa;
    --text-muted: #71717a;
    --accent: #3b82f6;
    --accent-hover: #2563eb;
    --danger: #ef4444;
    --success: #22c55e;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    background: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

main {
    flex: 1;
}

/* Navbar */
.navbar {
    background: rgba(10, 10, 11, 0.8);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border-color);
    padding: 1rem 0;
    position: sticky;
    top: 0;
    z-index: 100;
}

.navbar-brand {
    font-weight: 700;
    font-size: 1.25rem;
    color: var(--text-primary) !important;
    letter-spacing: -0.5px;
}

.navbar-brand:hover {
    color: var(--accent) !important;
}

.nav-link {
    color: var(--text-secondary) !important;
    font-weight: 500;
    font-size: 0.9rem;
    padding: 0.5rem 1rem !important;
    transition: color 0.2s ease;
}

.nav-link:hover {
    color: var(--text-primary) !important;
}

/* Cards */
.card {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    overflow: hidden;
}

.card-header {
    background: var(--bg-tertiary);
    border-bottom: 1px solid var(--border-color);
    padding: 1rem 1.25rem;
}

.card-header h5 {
    font-weight: 600;
    font-size: 0.95rem;
    color: var(--text-primary);
}

.card-body {
    padding: 1.25rem;
}

/* Forms */
.form-control {
    background: var(--bg-primary) !important;
    border: 1px solid var(--border-color) !important;
    border-radius: 8px !important;
    color: var(--text-primary) !important;
    padding: 0.75rem 1rem !important;
    font-size: 0.9rem !important;
    transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.form-control:focus {
    border-color: var(--accent) !important;
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.15) !important;
    outline: none;
}

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

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

/* Buttons */
.btn {
    font-weight: 500;
    font-size: 0.9rem;
    padding: 0.75rem 1.5rem;
    border-radius: 8px;
    transition: all 0.2s ease;
    border: none;
}

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

.btn-primary:hover {
    background: var(--accent-hover);
    transform: translateY(-1px);
}

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

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

.btn-sm {
    padding: 0.4rem 0.75rem;
    font-size: 0.8rem;
}

/* Tables */
.table {
    color: var(--text-primary);
    margin-bottom: 0;
}

.table thead th {
    background: var(--bg-tertiary);
    border-bottom: 1px solid var(--border-color);
    font-weight: 600;
    font-size: 0.8rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    color: var(--text-muted);
    padding: 0.75rem 1rem;
}

.table td {
    border-color: var(--border-color);
    padding: 0.75rem 1rem;
    font-size: 0.9rem;
}

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

/* Badges */
.badge {
    font-weight: 500;
    font-size: 0.75rem;
    padding: 0.35rem 0.65rem;
    border-radius: 6px;
}

/* Alerts */
.alert {
    border: none;
    border-radius: 8px;
    padding: 1rem 1.25rem;
    font-size: 0.9rem;
}

.alert-success {
    background: rgba(34, 197, 94, 0.15);
    color: var(--success);
}

.alert-danger {
    background: rgba(239, 68, 68, 0.15);
    color: var(--danger);
}

.alert-warning {
    background: rgba(234, 179, 8, 0.15);
    color: #eab308;
}

.alert-info {
    background: rgba(59, 130, 246, 0.15);
    color: var(--accent);
}

/* Code */
code {
    background: var(--bg-primary);
    padding: 0.25rem 0.5rem;
    border-radius: 4px;
    font-size: 0.85rem;
    color: var(--accent);
}

/* Hero Section */
.hero {
    text-align: center;
    padding: 6rem 2rem;
    max-width: 700px;
    margin: 0 auto;
}

.hero h1 {
    font-size: 3.5rem;
    font-weight: 700;
    letter-spacing: -2px;
    margin-bottom: 1.5rem;
    background: linear-gradient(135deg, var(--text-primary) 0%, var(--text-secondary) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero p {
    font-size: 1.15rem;
    color: var(--text-secondary);
    margin-bottom: 2.5rem;
    max-width: 500px;
    margin-left: auto;
    margin-right: auto;
}

.hero-buttons {
    display: flex;
    gap: 1rem;
    justify-content: center;
    flex-wrap: wrap;
}

/* Features Grid */
.features {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 1.5rem;
    padding: 3rem 0;
}

.feature-card {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 1.5rem;
    transition: all 0.3s ease;
}

.feature-card:hover {
    border-color: var(--accent);
    transform: translateY(-2px);
}

.feature-card h3 {
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
    color: var(--text-primary);
}

.feature-card p {
    font-size: 0.9rem;
    color: var(--text-muted);
    line-height: 1.5;
}

/* Stats */
.stats {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
    padding: 3rem 0;
    border-top: 1px solid var(--border-color);
    border-bottom: 1px solid var(--border-color);
    margin: 3rem 0;
}

.stat {
    text-align: center;
}

.stat-value {
    font-size: 2rem;
    font-weight: 700;
    color: var(--text-primary);
    letter-spacing: -1px;
}

.stat-label {
    font-size: 0.875rem;
    color: var(--text-muted);
    margin-top: 0.25rem;
}

/* Auth forms */
.auth-container {
    max-width: 400px;
    margin: 4rem auto;
}

.auth-card {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    padding: 2.5rem;
}

.auth-title {
    font-size: 1.5rem;
    font-weight: 600;
    text-align: center;
    margin-bottom: 2rem;
}

.auth-link {
    text-align: center;
    margin-top: 1.5rem;
    font-size: 0.9rem;
    color: var(--text-muted);
}

.auth-link a {
    color: var(--accent);
    text-decoration: none;
}

.auth-link a:hover {
    text-decoration: underline;
}

/* Dashboard */
.dashboard-grid {
    display: grid;
    grid-template-columns: 1fr 300px;
    gap: 1.5rem;
}

@media (max-width: 992px) {
    .dashboard-grid {
        grid-template-columns: 1fr;
    }
}

.section-title {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 1.5rem;
    color: var(--text-primary);
}

.token-display {
    background: var(--bg-primary);
    border-radius: 8px;
    padding: 1rem;
    font-family: monospace;
    font-size: 0.8rem;
    word-break: break-all;
    color: var(--text-secondary);
}

/* Footer */
footer {
    border-top: 1px solid var(--border-color);
    padding: 2rem 0;
    margin-top: auto;
}

footer p {
    font-size: 0.875rem;
    color: var(--text-muted);
}

/* Responsive */
@media (max-width: 768px) {
    .hero {
        padding: 4rem 1rem;
    }

    .hero h1 {
        font-size: 2.5rem;
    }

    .stats {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }

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

/* Scrollbar */
::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

::-webkit-scrollbar-track {
    background: var(--bg-primary);
}

::-webkit-scrollbar-thumb {
    background: var(--border-color);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--text-muted);
}

/* Utility */
.text-gradient {
    background: linear-gradient(135deg, var(--accent) 0%, #8b5cf6 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* ── Click GUI ─────────────────────────────────────────────────────── */

.gui-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 1.5rem;
    gap: 1rem;
}

.gui-header h2 {
    font-size: 1.25rem;
    font-weight: 600;
    margin: 0;
}

.gui-status {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.8rem;
    color: var(--text-muted);
}

.gui-status .dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--text-muted);
}

.gui-status .dot.connected {
    background: var(--success);
    box-shadow: 0 0 6px var(--success);
}

.gui-tabs {
    display: flex;
    gap: 0.25rem;
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 10px;
    padding: 0.25rem;
    margin-bottom: 1.5rem;
}

.gui-tab {
    flex: 1;
    padding: 0.6rem 1rem;
    border: none;
    background: transparent;
    color: var(--text-muted);
    font-family: 'Inter', sans-serif;
    font-size: 0.85rem;
    font-weight: 500;
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.2s ease;
    text-align: center;
}

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

.gui-tab.active {
    background: var(--accent);
    color: #fff;
}

.gui-category {
    display: none;
}

.gui-category.active {
    display: block;
}

.gui-modules {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: 1rem;
}

.gui-module {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    overflow: hidden;
    transition: border-color 0.2s ease;
}

.gui-module:hover {
    border-color: #3f3f46;
}

.gui-module-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0.85rem 1rem;
    border-bottom: 1px solid var(--border-color);
    background: var(--bg-tertiary);
}

.gui-module-name {
    font-weight: 600;
    font-size: 0.9rem;
    color: var(--text-primary);
}

/* Toggle switch */
.gui-toggle {
    position: relative;
    width: 40px;
    height: 22px;
    cursor: pointer;
}

.gui-toggle input {
    display: none;
}

.gui-toggle-track {
    position: absolute;
    inset: 0;
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: 11px;
    transition: all 0.2s ease;
}

.gui-toggle input:checked + .gui-toggle-track {
    background: var(--accent);
    border-color: var(--accent);
}

.gui-toggle-thumb {
    position: absolute;
    top: 3px;
    left: 3px;
    width: 16px;
    height: 16px;
    background: var(--text-muted);
    border-radius: 50%;
    transition: all 0.2s ease;
    pointer-events: none;
}

.gui-toggle input:checked ~ .gui-toggle-thumb {
    left: 21px;
    background: #fff;
}

.gui-module-body {
    padding: 0.75rem 1rem;
}

.gui-setting {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0.5rem 0;
    border-bottom: 1px solid rgba(39, 39, 42, 0.5);
}

.gui-setting:last-child {
    border-bottom: none;
}

.gui-setting-label {
    font-size: 0.8rem;
    color: var(--text-secondary);
    white-space: nowrap;
}

.gui-setting-control {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.gui-slider-row {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.gui-slider {
    -webkit-appearance: none;
    appearance: none;
    width: 120px;
    height: 4px;
    background: var(--border-color);
    border-radius: 2px;
    outline: none;
}

.gui-slider::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 14px;
    height: 14px;
    border-radius: 50%;
    background: var(--accent);
    cursor: pointer;
    transition: transform 0.15s ease;
}

.gui-slider::-webkit-slider-thumb:hover {
    transform: scale(1.2);
}

.gui-slider::-moz-range-thumb {
    width: 14px;
    height: 14px;
    border-radius: 50%;
    background: var(--accent);
    cursor: pointer;
    border: none;
}

.gui-slider-value {
    font-size: 0.75rem;
    font-family: 'Inter', monospace;
    color: var(--accent);
    min-width: 40px;
    text-align: right;
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: 4px;
    padding: 0.15rem 0.4rem;
}

.gui-select {
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: 6px;
    color: var(--text-primary);
    font-size: 0.8rem;
    padding: 0.3rem 0.5rem;
    font-family: 'Inter', sans-serif;
    cursor: pointer;
    outline: none;
}

.gui-select:focus {
    border-color: var(--accent);
}

.gui-empty {
    text-align: center;
    padding: 3rem;
    color: var(--text-muted);
    font-size: 0.9rem;
}

.gui-save-bar {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    background: rgba(17, 17, 19, 0.95);
    backdrop-filter: blur(12px);
    border-top: 1px solid var(--border-color);
    padding: 0.75rem 2rem;
    display: none;
    align-items: center;
    justify-content: space-between;
    z-index: 200;
}

.gui-save-bar.visible {
    display: flex;
}

.gui-save-bar .btn {
    padding: 0.5rem 1.5rem;
    font-size: 0.85rem;
}

.gui-save-bar .unsaved-text {
    font-size: 0.85rem;
    color: var(--text-muted);
}

@media (max-width: 768px) {
    .gui-modules {
        grid-template-columns: 1fr;
    }
    .gui-slider {
        width: 80px;
    }
}