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

:root {
    --bg-primary: #0f0f0f;
    --bg-secondary: #1a1a1a;
    --bg-tertiary: #252525;
    --text-primary: #ffffff;
    --text-secondary: #b0b0b0;
    --accent: #5865f2;
    --accent-hover: #4752c4;
    --danger: #ed4245;
    --success: #3ba55d;
    --border: #2f2f2f;

    /* New design tokens */
    --radius-lg: 14px;
    --radius-md: 10px;
    --radius-sm: 8px;
    --shadow-sm: 0 1px 0 rgba(255,255,255,0.04), 0 1px 16px rgba(0,0,0,0.35);
    --shadow-md: 0 1px 0 rgba(255,255,255,0.06), 0 8px 40px rgba(0,0,0,0.45);
    --ring: 0 0 0 3px rgba(88, 101, 242, 0.25);
    --ring-strong: 0 0 0 4px rgba(88, 101, 242, 0.35);
    --gradient: radial-gradient(1200px 600px at 20% -10%, rgba(88,101,242,0.35), transparent 60%),
                radial-gradient(900px 500px at 90% 0%, rgba(59,165,93,0.18), transparent 55%),
                radial-gradient(900px 500px at 70% 110%, rgba(237,66,69,0.12), transparent 55%);
}

/* Light theme support (opt-in via body[data-theme="light"]) */
body[data-theme="light"] {
    --bg-primary: #f6f7fb;
    --bg-secondary: #ffffff;
    --bg-tertiary: #f0f2f7;
    --text-primary: #0b0d12;
    --text-secondary: #4b5565;
    --border: rgba(15, 23, 42, 0.12);
    --shadow-sm: 0 1px 0 rgba(17,24,39,0.06), 0 10px 30px rgba(17,24,39,0.10);
    --shadow-md: 0 1px 0 rgba(17,24,39,0.06), 0 18px 60px rgba(17,24,39,0.14);
    --gradient: radial-gradient(1200px 600px at 20% -10%, rgba(88,101,242,0.22), transparent 60%),
                radial-gradient(900px 500px at 90% 0%, rgba(59,165,93,0.12), transparent 55%),
                radial-gradient(900px 500px at 70% 110%, rgba(237,66,69,0.08), transparent 55%);
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    background: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    min-height: 100vh;
}

body::before {
    content: "";
    position: fixed;
    inset: 0;
    pointer-events: none;
    background: var(--gradient);
    opacity: 0.9;
    z-index: -1;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

.navbar {
    background: rgba(26, 26, 26, 0.65);
    backdrop-filter: blur(14px);
    padding: 1rem 0;
    border-bottom: 1px solid rgba(255,255,255,0.06);
}

body[data-theme="light"] .navbar {
    background: rgba(255, 255, 255, 0.7);
    border-bottom: 1px solid rgba(15, 23, 42, 0.08);
}

.navbar .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.nav-brand h2 {
    color: var(--text-primary);
    font-size: 1.5rem;
}

.nav-links {
    display: flex;
    gap: 1rem;
    align-items: center;
}

.user-info {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--text-secondary);
}

.avatar {
    width: 32px;
    height: 32px;
    border-radius: 50%;
}

.btn {
    padding: 0.6rem 1.2rem;
    border: none;
    border-radius: 999px;
    cursor: pointer;
    text-decoration: none;
    display: inline-block;
    font-size: 0.95rem;
    transition: all 0.2s;
    box-shadow: none;
}

.btn:focus-visible {
    outline: none;
    box-shadow: var(--ring);
}

.btn-primary {
    background: linear-gradient(180deg, rgba(88,101,242,1), rgba(71,82,196,1));
    color: white;
}

.btn-primary:hover {
    transform: translateY(-1px);
    filter: brightness(1.03);
}

.btn-secondary {
    background: rgba(255,255,255,0.06);
    color: var(--text-primary);
    border: 1px solid rgba(255,255,255,0.08);
}

.btn-secondary:hover {
    background: rgba(255,255,255,0.10);
    transform: translateY(-1px);
}

.btn-large {
    padding: 1rem 2rem;
    font-size: 1.1rem;
}

.hero {
    text-align: center;
    padding: 4rem 0;
}

.hero h1 {
    font-size: 3rem;
    margin-bottom: 1rem;
}

.hero p {
    font-size: 1.2rem;
    color: var(--text-secondary);
    margin-bottom: 2rem;
}

.features {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1.5rem;
    padding: 2rem 0;
}

.feature-card {
    background: rgba(26, 26, 26, 0.65);
    backdrop-filter: blur(14px);
    padding: 2rem;
    border-radius: var(--radius-lg);
    border: 1px solid rgba(255,255,255,0.08);
    box-shadow: var(--shadow-sm);
}

body[data-theme="light"] .feature-card {
    background: rgba(255, 255, 255, 0.75);
    border: 1px solid rgba(15, 23, 42, 0.10);
}

.feature-card h3 {
    margin-bottom: 0.5rem;
    color: var(--accent);
}

.feature-card p {
    color: var(--text-secondary);
}

.dashboard-header {
    padding: 2rem 0;
}

.dashboard-header h1 {
    font-size: 2.5rem;
    margin-bottom: 0.5rem;
}

.dashboard-header p {
    color: var(--text-secondary);
}

.server-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: 1.5rem;
    padding: 2rem 0;
}

.server-card {
    background: rgba(26, 26, 26, 0.65);
    backdrop-filter: blur(14px);
    padding: 1.5rem;
    border-radius: var(--radius-lg);
    border: 1px solid rgba(255,255,255,0.08);
    text-decoration: none;
    color: var(--text-primary);
    text-align: center;
    transition: all 0.2s;
    box-shadow: var(--shadow-sm);
    position: relative;
    overflow: hidden;
}

.server-card:hover {
    border-color: rgba(88,101,242,0.55);
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
}

.server-card:focus-visible {
    outline: none;
    box-shadow: var(--ring-strong), var(--shadow-md);
}

.server-icon {
    width: 80px;
    height: 80px;
    border-radius: 50%;
    margin-bottom: 1rem;
}

.server-icon-placeholder {
    width: 80px;
    height: 80px;
    border-radius: 50%;
    background: var(--accent);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
    font-weight: bold;
    margin: 0 auto 1rem;
}

.server-card h3 {
    margin-bottom: 0.5rem;
    font-size: 1.1rem;
}

.badge {
    display: inline-block;
    padding: 0.25rem 0.75rem;
    background: rgba(88,101,242,0.16);
    border: 1px solid rgba(88,101,242,0.35);
    color: var(--text-primary);
    border-radius: 12px;
    font-size: 0.8rem;
}

.empty-state {
    grid-column: 1 / -1;
    text-align: center;
    padding: 3rem;
    background: var(--bg-secondary);
    border-radius: 8px;
    border: 1px solid var(--border);
}

.empty-state p {
    margin-bottom: 1rem;
    color: var(--text-secondary);
}

.server-header {
    padding: 2rem 0;
}

.back-link {
    color: var(--text-secondary);
    text-decoration: none;
    display: inline-block;
    margin-bottom: 1rem;
}

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

.server-info {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.server-icon-large {
    width: 64px;
    height: 64px;
    border-radius: 50%;
}

.server-icon-placeholder.large {
    width: 64px;
    height: 64px;
    font-size: 1.5rem;
}

.settings-container {
    display: grid;
    grid-template-columns: 250px 1fr;
    gap: 2rem;
    padding: 2rem 0;
}

.settings-sidebar {
    position: sticky;
    top: 20px;
    height: fit-content;
}

.settings-nav {
    background: rgba(26, 26, 26, 0.65);
    backdrop-filter: blur(14px);
    border-radius: var(--radius-lg);
    border: 1px solid rgba(255,255,255,0.08);
    padding: 1rem;
    box-shadow: var(--shadow-sm);
}

.settings-nav-item {
    display: block;
    padding: 0.75rem 1rem;
    color: var(--text-secondary);
    text-decoration: none;
    border-radius: 999px;
    transition: all 0.2s;
}

.settings-nav-item:hover {
    background: rgba(255,255,255,0.06);
    color: var(--text-primary);
}

.settings-nav-item.active {
    background: linear-gradient(180deg, rgba(88,101,242,1), rgba(71,82,196,1));
    color: white;
    box-shadow: 0 10px 30px rgba(88,101,242,0.18);
}

.settings-content {
    background: rgba(26, 26, 26, 0.65);
    backdrop-filter: blur(14px);
    border-radius: var(--radius-lg);
    border: 1px solid rgba(255,255,255,0.08);
    padding: 2rem;
    box-shadow: var(--shadow-sm);
}

.settings-section {
    display: none;
}

.settings-section.active {
    display: block;
}

.settings-section h2 {
    margin-bottom: 1.5rem;
    font-size: 1.8rem;
}

.form-group {
    margin-bottom: 1.5rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    color: var(--text-primary);
}

.form-group input[type="text"],
.form-group input[type="number"],
.form-group select {
    width: 100%;
    padding: 0.75rem;
    background: rgba(255,255,255,0.06);
    border: 1px solid rgba(255,255,255,0.10);
    border-radius: var(--radius-md);
    color: var(--text-primary);
    font-size: 1rem;
}

.form-group input[type="text"]:focus,
.form-group input[type="number"]:focus,
.form-group select:focus {
    outline: none;
    border-color: rgba(88,101,242,0.9);
    box-shadow: var(--ring);
}

/* Toggle switch (dashboard AI models) */
.toggle {
    --toggle-w: 44px;
    --toggle-h: 26px;
    position: relative;
    display: inline-flex;
    align-items: center;
    gap: 10px;
    user-select: none;
}

.toggle input {
    position: absolute;
    opacity: 0;
    pointer-events: none;
}

.toggle-track {
    width: var(--toggle-w);
    height: var(--toggle-h);
    border-radius: 999px;
    background: rgba(255,255,255,0.12);
    border: 1px solid rgba(255,255,255,0.14);
    box-shadow: inset 0 0 0 1px rgba(0,0,0,0.15);
    transition: background 180ms ease, border-color 180ms ease;
    position: relative;
}

.toggle-thumb {
    width: 20px;
    height: 20px;
    border-radius: 999px;
    background: #ffffff;
    position: absolute;
    top: 2px;
    left: 2px;
    transition: transform 180ms ease;
    box-shadow: 0 6px 20px rgba(0,0,0,0.35);
}

.toggle input:checked + .toggle-track {
    background: rgba(88,101,242,0.55);
    border-color: rgba(88,101,242,0.65);
}

.toggle input:checked + .toggle-track .toggle-thumb {
    transform: translateX(18px);
}

.toggle input:focus-visible + .toggle-track {
    box-shadow: var(--ring);
}

@media (prefers-reduced-motion: reduce) {
    .btn,
    .server-card,
    .settings-nav-item,
    .toggle-track,
    .toggle-thumb {
        transition: none !important;
    }
}

.form-group input[type="checkbox"] {
    width: auto;
    margin-right: 0.5rem;
}

.form-group small {
    display: block;
    margin-top: 0.25rem;
    color: var(--text-secondary);
    font-size: 0.85rem;
}

.form-actions {
    display: flex;
    gap: 1rem;
    margin-top: 2rem;
    padding-top: 2rem;
    border-top: 1px solid var(--border);
}

/* AI Model cards */
.model-cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 14px;
    margin-top: 10px;
}

.model-card {
    background: rgba(255,255,255,0.06);
    border: 1px solid rgba(255,255,255,0.10);
    border-radius: var(--radius-lg);
    padding: 14px 14px;
    box-shadow: 0 1px 0 rgba(255,255,255,0.04);
    transition: transform 160ms ease, border-color 160ms ease, background 160ms ease;
}

.model-card:hover {
    transform: translateY(-2px);
    border-color: rgba(88,101,242,0.35);
    background: rgba(255,255,255,0.075);
}

.model-card-header {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: 12px;
    margin-bottom: 8px;
}

.model-card-title {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.model-card-title strong {
    font-size: 1.02rem;
    line-height: 1.2;
}

.model-card-meta {
    font-size: 0.85rem;
    color: var(--text-secondary);
}

.pill {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 2px 10px;
    border-radius: 999px;
    font-size: 0.78rem;
    border: 1px solid rgba(255,255,255,0.12);
    background: rgba(255,255,255,0.06);
    color: var(--text-secondary);
}

.pill--accent {
    border-color: rgba(88,101,242,0.35);
    background: rgba(88,101,242,0.14);
    color: var(--text-primary);
}

.pill--warn {
    border-color: rgba(237,66,69,0.30);
    background: rgba(237,66,69,0.10);
    color: var(--text-primary);
}

.model-card-desc {
    color: var(--text-secondary);
    font-size: 0.92rem;
}

.toast {
    position: fixed;
    right: 18px;
    bottom: 18px;
    z-index: 1000;
    min-width: 260px;
    max-width: min(420px, calc(100vw - 32px));
    padding: 12px 14px;
    border-radius: var(--radius-lg);
    border: 1px solid rgba(255,255,255,0.10);
    background: rgba(26,26,26,0.72);
    backdrop-filter: blur(14px);
    box-shadow: var(--shadow-md);
    transform: translateY(10px);
    opacity: 0;
    transition: opacity 160ms ease, transform 160ms ease;
}

.toast.show {
    opacity: 1;
    transform: translateY(0);
}

.toast.success { border-color: rgba(59,165,93,0.28); }
.toast.error { border-color: rgba(237,66,69,0.30); }

.status-message {
    margin-top: 1rem;
    padding: 1rem;
    border-radius: 4px;
    display: none;
}

.status-message.success {
    background: rgba(59, 165, 93, 0.2);
    border: 1px solid var(--success);
    color: var(--success);
    display: block;
}

.status-message.error {
    background: rgba(237, 66, 69, 0.2);
    border: 1px solid var(--danger);
    color: var(--danger);
    display: block;
}

footer {
    text-align: center;
    padding: 2rem 0;
    margin-top: 4rem;
    border-top: 1px solid var(--border);
    color: var(--text-secondary);
}

@media (max-width: 768px) {
    .settings-container {
        grid-template-columns: 1fr;
    }

    .settings-sidebar {
        position: static;
    }

    .settings-nav {
        display: flex;
        overflow-x: auto;
    }

    .settings-nav-item {
        white-space: nowrap;
    }

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

/* Shedtest Styles */
.purity-container {
    max-width: 800px;
    margin: 0 auto 100px auto; /* Bottom margin for fixed controls */
}

.question-item {
    background: rgba(26, 26, 26, 0.65);
    backdrop-filter: blur(14px);
    border: 1px solid rgba(255,255,255,0.08);
    border-radius: var(--radius-sm);
    margin-bottom: 0.75rem;
    padding: 1rem;
    display: flex;
    align-items: center; /* Align checkbox and text */
    cursor: pointer;
    transition: all 0.2s ease;
}

body[data-theme="light"] .question-item {
    background: rgba(255, 255, 255, 0.75);
    border-color: rgba(15, 23, 42, 0.10);
}

.question-item:hover {
    transform: translateX(4px);
    border-color: var(--accent);
    background: rgba(26, 26, 26, 0.85);
}

body[data-theme="light"] .question-item:hover {
    background: rgba(255, 255, 255, 0.95);
}

.question-item input[type="checkbox"] {
    appearance: none;
    -webkit-appearance: none;
    width: 24px;
    height: 24px;
    border: 2px solid var(--text-secondary);
    border-radius: 6px;
    margin-right: 1rem;
    cursor: pointer;
    position: relative;
    transition: all 0.2s ease;
    flex-shrink: 0;
}

.question-item input[type="checkbox"]:checked {
    background-color: var(--accent);
    border-color: var(--accent);
}

.question-item input[type="checkbox"]:checked::after {
    content: '';
    position: absolute;
    left: 7px;
    top: 3px;
    width: 6px;
    height: 12px;
    border: solid white;
    border-width: 0 2px 2px 0;
    transform: rotate(45deg);
}

.question-item label {
    cursor: pointer;
    width: 100%;
    font-size: 1.1rem;
    user-select: none;
    line-height: 1.4;
}

.controls-bar {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    padding: 1rem;
    display: flex;
    justify-content: center;
    gap: 1rem;
    background: rgba(15, 15, 15, 0.95);
    backdrop-filter: blur(10px);
    border-top: 1px solid var(--border);
    z-index: 100;
}

body[data-theme="light"] .controls-bar {
    background: rgba(255, 255, 255, 0.95);
}

/* Score Modal/Overlay */
.score-modal {
    position: fixed;
    inset: 0;
    background: rgba(0,0,0,0.8);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 1000;
    animation: fadeIn 0.3s ease;
}

.score-content {
    text-align: center;
    max-width: 400px;
    width: 90%;
    animation: slideUp 0.3s ease;
    background: rgba(26, 26, 26, 0.95); /* Ensure opaque background */
}

body[data-theme="light"] .score-content {
    background: white;
}

.score-value {
    font-size: 5rem;
    font-weight: 800;
    color: var(--accent);
    margin: 1rem 0;
    text-shadow: 0 0 20px rgba(88,101,242,0.4);
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

@keyframes slideUp {
    from { transform: translateY(20px); opacity: 0; }
    to { transform: translateY(0); opacity: 1; }
}