:root {
    --font-header: 'Plus Jakarta Sans', sans-serif;
    --font-body: 'Inter', sans-serif;
    --font-mono: 'Inter', sans-serif;
    --font-main: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
}

/* Dark Theme (Default) */
[data-theme="dark"] {
    --bg-core: #050508;
    --glass-bg: rgba(255, 255, 255, 0.03);
    --glass-border: rgba(255, 255, 255, 0.08);
    --text-primary: #FFFFFF;
    --text-secondary: rgba(255, 255, 255, 0.7);
    --text-tertiary: rgba(255, 255, 255, 0.5);
    --text-main: #FFFFFF;
    --text-muted: rgba(255, 255, 255, 0.75);
    --btn-bg: #FFFFFF;
    --btn-text: #000000;
    --btn-shadow: rgba(255, 255, 255, 0.2);
    --btn-shadow-hover: rgba(255, 255, 255, 0.4);
    --card-shadow: none;
    --aurora-color-1: rgba(0, 240, 255, 0.15);
    --aurora-color-2: rgba(123, 97, 255, 0.15);
    --aurora-color-3: rgba(5, 5, 8, 0.15);
}

/* Light Theme */
[data-theme="light"] {
    --bg-core: #F3F4F6;
    --glass-bg: rgba(255, 255, 255, 0.6);
    --glass-border: rgba(0, 0, 0, 0.1);
    --text-primary: #111827;
    --text-secondary: rgba(17, 24, 39, 0.7);
    --text-tertiary: rgba(17, 24, 39, 0.5);
    --text-main: #111827;
    --text-muted: rgba(17, 24, 39, 0.75);
    --btn-bg: #000000;
    --btn-text: #FFFFFF;
    --btn-shadow: rgba(0, 0, 0, 0.1);
    --btn-shadow-hover: rgba(0, 0, 0, 0.2);
    --card-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
    --aurora-color-1: rgba(99, 102, 241, 0.08);
    --aurora-color-2: rgba(139, 92, 246, 0.08);
    --aurora-color-3: rgba(243, 244, 246, 0.08);
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-body);
    background: var(--bg-core);
    color: var(--text-main);
    font-weight: 400;
    line-height: 1.6;
    letter-spacing: -0.01em;
    overflow-x: hidden;
    position: relative;
    -webkit-font-smoothing: antialiased;
}

body::before {
    content: "";
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: url("https://grainy-gradients.vercel.app/noise.svg");
    opacity: 0.05;
    pointer-events: none;
    z-index: 9999;
    mix-blend-mode: overlay;
}

[data-theme="light"] body::before {
    opacity: 0.03;
}

h1, h2, h3, h4, .logo-text {
    font-family: var(--font-header);
    font-weight: 500;
    line-height: 1.1;
    letter-spacing: -0.03em;
    color: var(--text-main);
}

#gradient-canvas {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 0;
    pointer-events: none;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

.header {
    position: fixed;
    top: 24px;
    left: 50%;
    transform: translateX(-50%);
    z-index: 1000;
    width: calc(100% - 48px);
    max-width: 1200px;
}

.nav-container {
    display: flex;
    align-items: center;
    gap: 48px;
    padding: 16px 24px;
    background: var(--glass-bg);
    backdrop-filter: blur(20px);
    border: 1px solid var(--glass-border);
    border-radius: 16px;
}

.header-actions {
    display: flex;
    align-items: center;
    gap: 16px;
}

.theme-toggle {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    background: transparent;
    border: 1px solid var(--glass-border);
    border-radius: 10px;
    color: var(--text-secondary);
    cursor: pointer;
    transition: all 0.3s;
}

.theme-toggle:hover {
    color: var(--text-primary);
    border-color: var(--text-tertiary);
    background: var(--glass-bg);
}

[data-theme="dark"] .sun-icon {
    display: none;
}

[data-theme="dark"] .moon-icon {
    display: block;
}

[data-theme="light"] .sun-icon {
    display: block;
}

[data-theme="light"] .moon-icon {
    display: none;
}

.logo {
    display: flex;
    align-items: center;
    gap: 8px;
    font-weight: 600;
    font-size: 18px;
}

.logo-image {
    width: 32px;
    height: 32px;
    object-fit: contain;
}

[data-theme="dark"] .logo-light {
    display: none;
}

[data-theme="dark"] .logo-dark {
    display: block;
}

[data-theme="light"] .logo-light {
    display: block;
}

[data-theme="light"] .logo-dark {
    display: none;
}

.logo-icon {
    color: var(--accent-primary);
    font-size: 24px;
}

.nav-links {
    display: flex;
    gap: 32px;
    flex: 1;
}

.nav-links a {
    color: var(--text-secondary);
    text-decoration: none;
    font-weight: 400;
    padding: 8px 16px;
    border-radius: 8px;
    border: 1px solid transparent;
    transition: all 0.3s;
}

.nav-links a:hover {
    color: var(--text-primary);
}

[data-theme="dark"] .nav-links a:hover {
    background: rgba(255, 255, 255, 0.1);
    border-color: rgba(255, 255, 255, 0.2);
}

[data-theme="light"] .nav-links a:hover {
    background: rgba(0, 0, 0, 0.06);
    border-color: rgba(0, 0, 0, 0.15);
}

.btn-primary {
    position: relative;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 12px 24px;
    background: var(--btn-bg);
    color: var(--btn-text);
    text-decoration: none;
    border-radius: 12px;
    font-weight: 500;
    overflow: hidden;
    transition: all 0.3s;
    box-shadow: 0 0 20px var(--btn-shadow);
}

.btn-primary:hover {
    transform: scale(1.05);
    box-shadow: 0 0 40px var(--btn-shadow-hover);
}

.btn-glow {
    position: absolute;
    inset: 0;
    background: radial-gradient(circle at center, var(--btn-shadow-hover), transparent 70%);
    opacity: 0;
    transition: opacity 0.3s;
}

.btn-primary:hover .btn-glow {
    opacity: 1;
}
    gap: 8px;
    padding: 12px 24px;
    background: #FFFFFF;
    color: #000000;
    text-decoration: none;
    border-radius: 12px;
    font-weight: 500;
    overflow: hidden;
    transition: transform 0.3s, box-shadow 0.3s;
    box-shadow: 0 0 20px rgba(255, 255, 255, 0.2);
}

.btn-primary:hover {
    transform: scale(1.05);
    box-shadow: 0 0 40px rgba(255, 255, 255, 0.4);
}

.btn-glow {
    position: absolute;
    inset: 0;
    background: radial-gradient(circle at center, rgba(255, 255, 255, 0.3), transparent 70%);
    opacity: 0;
    transition: opacity 0.3s;
}

.btn-primary:hover .btn-glow {
    opacity: 1;
}

main {
    position: relative;
    z-index: 1;
}

.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: 120px 24px 80px;
}

.hero-content {
    max-width: 800px;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 8px 16px;
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: 100px;
    font-size: 14px;
    font-family: var(--font-mono);
    color: var(--text-secondary);
    margin-bottom: 32px;
}

.badge-dot {
    width: 8px;
    height: 8px;
    background: var(--accent-primary);
    border-radius: 50%;
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.5; }
}

.hero-title {
    font-size: clamp(48px, 8vw, 72px);
    font-weight: 500;
    line-height: 1.1;
    margin-bottom: 24px;
    letter-spacing: -0.03em;
}

[data-theme="dark"] .hero-title {
    background: linear-gradient(
        180deg, 
        #FFFFFF 0%, 
        rgba(255, 255, 255, 0.7) 100%
    );
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    text-shadow: 0px 0px 40px rgba(255, 255, 255, 0.15);
}

[data-theme="light"] .hero-title {
    color: var(--text-primary);
}

.gradient-text {
    background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

[data-theme="dark"] .gradient-text {
    text-shadow: 0px 0px 40px rgba(0, 240, 255, 0.2);
}

[data-theme="light"] .gradient-text {
    background: linear-gradient(135deg, #6366F1, #8B5CF6);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: 18px;
    color: var(--text-secondary);
    margin-bottom: 40px;
    line-height: 1.6;
}

.hero-cta {
    display: flex;
    justify-content: center;
    gap: 16px;
}

.btn-hero {
    display: inline-flex;
    align-items: center;
    gap: 12px;
    padding: 16px 32px;
    background: var(--btn-bg);
    color: var(--btn-text);
    text-decoration: none;
    border-radius: 12px;
    font-weight: 500;
    font-size: 16px;
    transition: all 0.3s;
    box-shadow: 0 0 40px var(--btn-shadow);
}

.btn-hero:hover {
    transform: translateY(-2px);
    box-shadow: 0 0 60px var(--btn-shadow-hover);
}

.benefits {
    padding: 80px 0;
}

.bento-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
}

.bento-card {
    position: relative;
    padding: 32px;
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: 24px;
    backdrop-filter: blur(20px);
    overflow: hidden;
    transition: all 0.3s;
    box-shadow: var(--card-shadow);
}

.bento-card::before {
    content: '';
    position: absolute;
    inset: 0;
    background: radial-gradient(circle at var(--mouse-x, 50%) var(--mouse-y, 50%), rgba(0, 240, 255, 0.1), transparent 50%);
    opacity: 0;
    transition: opacity 0.3s;
}

[data-theme="light"] .bento-card::before {
    background: radial-gradient(circle at var(--mouse-x, 50%) var(--mouse-y, 50%), rgba(99, 102, 241, 0.08), transparent 50%);
}

.bento-card:hover::before {
    opacity: 1;
}

.bento-card:hover {
    transform: translateY(-4px);
}

[data-theme="dark"] .bento-card:hover {
    border-color: rgba(0, 240, 255, 0.3);
}

[data-theme="light"] .bento-card:hover {
    border-color: rgba(99, 102, 241, 0.3);
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.12);
}

.card-icon {
    font-size: 48px;
    margin-bottom: 16px;
}

.bento-card h3 {
    font-size: 20px;
    font-weight: 500;
    margin-bottom: 12px;
}

.bento-card p {
    color: var(--text-secondary);
    font-size: 15px;
    line-height: 1.6;
}

.features {
    padding: 80px 0;
    scroll-margin-top: 100px;
}

.section-header {
    text-align: center;
    margin-bottom: 64px;
}

.section-title {
    font-size: clamp(36px, 5vw, 48px);
    font-weight: 500;
    margin-bottom: 16px;
    letter-spacing: -0.02em;
}

.section-subtitle {
    font-size: 18px;
    color: var(--text-secondary);
}

.feature-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 24px;
}

.feature-card {
    position: relative;
    padding: 32px;
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: 24px;
    backdrop-filter: blur(20px);
    overflow: hidden;
    transition: all 0.3s;
    box-shadow: var(--card-shadow);
}

.feature-card.large {
    grid-column: span 2;
}

.feature-card::before {
    content: '';
    position: absolute;
    inset: 0;
    background: radial-gradient(circle at var(--mouse-x, 50%) var(--mouse-y, 50%), rgba(123, 97, 255, 0.1), transparent 50%);
    opacity: 0;
    transition: opacity 0.3s;
}

[data-theme="light"] .feature-card::before {
    background: radial-gradient(circle at var(--mouse-x, 50%) var(--mouse-y, 50%), rgba(139, 92, 246, 0.08), transparent 50%);
}

.feature-card:hover::before {
    opacity: 1;
}

.feature-card:hover {
    transform: translateY(-2px);
}

[data-theme="dark"] .feature-card:hover {
    border-color: rgba(123, 97, 255, 0.3);
}

[data-theme="light"] .feature-card:hover {
    border-color: rgba(139, 92, 246, 0.3);
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.12);
}

.feature-header {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 16px;
}

.feature-icon {
    font-size: 32px;
}

.feature-header h3 {
    font-size: 24px;
    font-weight: 500;
}

.feature-desc {
    color: var(--text-secondary);
    margin-bottom: 24px;
    font-size: 15px;
}

.models-list {
    display: flex;
    flex-direction: column;
    gap: 12px;
    margin-bottom: 24px;
}

.model-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 16px;
    background: rgba(255, 255, 255, 0.02);
    border: 1px solid rgba(255, 255, 255, 0.05);
    border-radius: 12px;
    transition: all 0.3s;
}

[data-theme="light"] .model-item {
    background: rgba(0, 0, 0, 0.02);
    border: 1px solid rgba(0, 0, 0, 0.08);
}

.model-item:hover {
    background: rgba(255, 255, 255, 0.04);
    border-color: rgba(255, 255, 255, 0.1);
}

[data-theme="light"] .model-item:hover {
    background: rgba(0, 0, 0, 0.04);
    border-color: rgba(0, 0, 0, 0.12);
}

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

.model-name {
    font-weight: 500;
    font-size: 15px;
}

.model-desc {
    font-size: 13px;
    color: var(--text-tertiary);
}

.model-price {
    padding: 6px 12px;
    background: var(--btn-bg);
    color: var(--btn-text);
    border-radius: 8px;
    font-size: 13px;
    font-weight: 700;
    font-family: var(--font-mono);
    white-space: nowrap;
}

.feature-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.tag {
    padding: 8px 16px;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 8px;
    font-size: 13px;
    color: var(--text-secondary);
}

[data-theme="light"] .tag {
    background: rgba(0, 0, 0, 0.04);
    border: 1px solid rgba(0, 0, 0, 0.1);
}

.pricing {
    padding: 80px 0;
    scroll-margin-top: 100px;
}

.pricing-card {
    max-width: 800px;
    margin: 0 auto;
    padding: 48px;
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: 24px;
    backdrop-filter: blur(20px);
    box-shadow: var(--card-shadow);
}

.pricing-info {
    display: flex;
    flex-direction: column;
    gap: 32px;
}

.pricing-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-bottom: 32px;
    border-bottom: 1px solid var(--glass-border);
}

.pricing-item:last-child {
    border-bottom: none;
    padding-bottom: 0;
}

.pricing-label {
    font-size: 18px;
    font-weight: 500;
    font-family: var(--font-mono);
}

.pricing-value {
    color: var(--text-secondary);
    text-align: right;
}

.cta {
    padding: 120px 0;
}

.cta-content {
    text-align: center;
    max-width: 600px;
    margin: 0 auto;
}

.cta-title {
    font-size: clamp(36px, 5vw, 48px);
    font-weight: 500;
    margin-bottom: 16px;
    letter-spacing: -0.02em;
}

.cta-subtitle {
    font-size: 18px;
    color: var(--text-secondary);
    margin-bottom: 40px;
}

.footer {
    padding: 40px 0;
    text-align: center;
    border-top: 1px solid var(--glass-border);
}

.footer p {
    color: var(--text-tertiary);
    font-size: 14px;
}

@media (max-width: 1024px) {
    .feature-card.large {
        grid-column: span 1;
    }
}

@media (max-width: 768px) {
    .header {
        top: 16px;
        width: calc(100% - 32px);
    }

    .nav-container {
        padding: 12px 16px;
    }

    .nav-links {
        display: none;
    }

    .hero {
        padding: 100px 24px 60px;
    }

    .hero-title {
        font-size: 40px;
    }

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

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

    .pricing-card {
        padding: 32px 24px;
    }

    .pricing-item {
        flex-direction: column;
        align-items: flex-start;
        gap: 8px;
    }

    .pricing-value {
        text-align: left;
    }
}

@media (max-width: 480px) {
    .btn-primary span {
        display: none;
    }

    .btn-primary::after {
        content: '→';
        font-size: 20px;
    }
}