:root {
    --primary-color: #FF5733;
    --text-color: #1A1A1A;
    --background-color: #FFFFFF;
    --secondary-background: #F5F5F5;
    --text-secondary: rgba(26, 26, 26, 0.7);
    --border-color: rgba(0, 0, 0, 0.1);
    --spacing-unit: 8px;
    --gradient-start: rgba(128, 128, 128, 0.2);
    --gradient-end: rgba(128, 128, 128, 0);
    --horizon-glow: rgba(78, 161, 255, 0.4);
    --line-color: #808080;
}

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

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    background-color: var(--background-color);
    color: var(--text-color);
    line-height: 1.5;
}

.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 var(--spacing-unit);
}

/* Navigation */
.navbar {
    padding: calc(var(--spacing-unit) * 2) 0;
    background-color: transparent;
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    z-index: 100;
}

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

.nav-left .logo {
    display: flex;
    align-items: center;
    gap: calc(var(--spacing-unit) * 1.5);
    text-decoration: none;
    color: var(--text-color);
    font-weight: 600;
    font-size: 1.2rem;
}

.nav-left .logo img {
    border-radius: 8px;
}

.nav-right {
    display: flex;
    gap: calc(var(--spacing-unit) * 3);
    align-items: center;
}

/* Hero Section */
.hero {
    padding: calc(var(--spacing-unit) * 16) 0 calc(var(--spacing-unit) * 8);
    min-height: 70vh;
    display: flex;
    align-items: center;
    position: relative;
}

.hero:before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 400px;
    background: linear-gradient(180deg, 
        var(--gradient-start) 0%,
        var(--gradient-end) 100%);
    z-index: 0;
}

.hero .container {
    position: relative;
    z-index: 1;
}

.split-layout {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: calc(var(--spacing-unit) * 8);
    align-items: center;
}

.hero-content {
    position: relative;
}

.hero h1 {
    font-size: 4.5rem;
    font-weight: 700;
    line-height: 1.1;
    margin-bottom: calc(var(--spacing-unit) * 4);
}

.connecting-line {
    position: absolute;
    top: 50%;
    right: -50px;
    width: 100px;
    height: 2px;
    background-color: var(--text-color);
}

.subtitle {
    font-size: 1.5rem;
    color: var(--text-secondary);
    margin-bottom: calc(var(--spacing-unit) * 3);
    line-height: 1.4;
}

.description {
    font-size: 1.1rem;
    color: rgba(229, 229, 229, 0.8);
    margin-bottom: calc(var(--spacing-unit) * 6);
    max-width: 540px;
}

.cta-buttons {
    display: flex;
    gap: calc(var(--spacing-unit) * 2);
    margin-bottom: calc(var(--spacing-unit) * 8);
}

.button-primary {
    background-color: var(--text-color);
    color: var(--background-color);
    padding: calc(var(--spacing-unit) * 1.5) calc(var(--spacing-unit) * 3);
    border-radius: 6px;
    font-weight: 500;
    text-decoration: none;
    transition: all 0.2s ease;
    display: inline-flex;
    align-items: center;
    gap: calc(var(--spacing-unit));
}

.button-primary .chrome-logo {
    margin-right: 4px;
}

[data-theme="light"] .button-primary .chrome-logo {
    filter: brightness(0) invert(1);
}

.button-primary:hover {
    transform: translateY(-1px);
}

[data-theme="light"] .button-primary:hover {
    background-color: #000000;
}

[data-theme="dark"] .button-primary:hover {
    background-color: #FFFFFF;
}

.button-secondary {
    display: flex;
    align-items: center;
    gap: calc(var(--spacing-unit));
    color: var(--text-color);
    text-decoration: none;
    font-weight: 500;
}

.button-secondary:before {
    content: "▶";
    font-size: 0.8em;
}

.partners {
    margin-top: calc(var(--spacing-unit) * 8);
}

.partners h4 {
    font-size: 0.9rem;
    color: rgba(229, 229, 229, 0.6);
    margin-bottom: calc(var(--spacing-unit) * 3);
}

.partner-logos {
    display: flex;
    gap: calc(var(--spacing-unit) * 4);
    align-items: center;
}

.partner-logo {
    opacity: 0.6;
    transition: opacity 0.2s ease;
}

.partner-logo:hover {
    opacity: 1;
}

/* Hero Visual */
.hero-visual {
    position: relative;
}

.browser-window {
    background: var(--secondary-background);
    border-radius: 12px;
    overflow: hidden;
    border: 1px solid var(--border-color);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.2);
    transform: perspective(1000px) rotateY(-10deg);
}

[data-theme="dark"] .browser-window {
    background: #1A1A1A;
    border-color: rgba(255, 255, 255, 0.1);
}

.browser-header {
    background: var(--background-color);
    padding: 8px 16px;
    display: flex;
    align-items: center;
    gap: 16px;
    border-bottom: 1px solid var(--border-color);
}

[data-theme="dark"] .browser-header,
[data-theme="dark"] .browser-toolbar {
    background: #000000;
    border-color: rgba(255, 255, 255, 0.1);
}

.browser-controls {
    display: flex;
    gap: 8px;
}

.browser-dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: var(--text-secondary);
}

.browser-tabs {
    display: flex;
    align-items: center;
}

.browser-tab {
    padding: 6px 16px;
    background: rgba(127, 127, 127, 0.1);
    border-radius: 6px;
    font-size: 12px;
    color: var(--text-secondary);
}

.browser-tab.active {
    background: rgba(127, 127, 127, 0.15);
    color: var(--text-color);
}

.browser-toolbar {
    background: var(--background-color);
    padding: 8px 16px;
    display: flex;
    gap: 16px;
    align-items: center;
    border-bottom: 1px solid var(--border-color);
}

.browser-actions {
    display: flex;
    gap: 16px;
}

.browser-arrow, .browser-refresh {
    color: var(--text-secondary);
    font-size: 14px;
}

.browser-address {
    flex: 1;
    background: var(--secondary-background);
    border-radius: 20px;
    padding: 6px 12px;
    display: flex;
    align-items: center;
    gap: 8px;
    border: 1px solid var(--border-color);
}

.browser-lock {
    font-size: 12px;
    opacity: 0.5;
}

.browser-url {
    color: var(--text-secondary);
    font-size: 13px;
}

.browser-content {
    padding: 24px;
    background: var(--background-color);
}

[data-theme="dark"] .browser-content {
    background: #1A1A1A;
}

.syntax-cards {
    display: flex;
    flex-direction: column;
    gap: calc(var(--spacing-unit) * 3);
}

.syntax-group {
    display: flex;
    flex-direction: column;
    gap: calc(var(--spacing-unit) * 2);
}

.card {
    background: var(--secondary-background);
    padding: calc(var(--spacing-unit) * 3);
    border-radius: 12px;
    transition: transform 0.2s ease;
}

/* Features Section */
.features {
    padding: calc(var(--spacing-unit) * 8) 0;
    background-color: var(--secondary-background);
}

.feature-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: calc(var(--spacing-unit) * 4);
    margin-top: calc(var(--spacing-unit) * 4);
}

.feature-card {
    background: rgba(255, 255, 255, 0.05);
    padding: calc(var(--spacing-unit) * 3);
    border-radius: 12px;
    transition: transform 0.2s ease;
}

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

.feature-icon {
    font-size: 2rem;
    margin-bottom: calc(var(--spacing-unit) * 2);
}

.feature-card h3 {
    font-size: 1.2rem;
    margin-bottom: calc(var(--spacing-unit) * 2);
}

.feature-card p {
    color: rgba(229, 229, 229, 0.8);
    line-height: 1.6;
}

/* Syntax Flow Section */
.syntax-flow {
    padding: calc(var(--spacing-unit) * 8) 0;
    background-color: var(--background-color);
}

.syntax-flow h2 {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: calc(var(--spacing-unit) * 6);
}

/* CTA Section */
.cta {
    padding: calc(var(--spacing-unit) * 8) 0;
    text-align: center;
    background-color: var(--secondary-background);
}

.cta h2 {
    font-size: 2.5rem;
    margin-bottom: calc(var(--spacing-unit) * 2);
}

.cta p {
    font-size: 1.2rem;
    color: rgba(229, 229, 229, 0.8);
    margin-bottom: calc(var(--spacing-unit) * 4);
}

/* Feedback Widget */
.feedback-widget {
    background-color: var(--secondary-background);
    border-radius: 12px;
    margin: calc(var(--spacing-unit) * 4) auto;
    max-width: 800px;
}

.tabs {
    display: flex;
    gap: calc(var(--spacing-unit) * 2);
    padding: calc(var(--spacing-unit) * 2);
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.tab {
    background: none;
    border: none;
    color: var(--text-color);
    padding: calc(var(--spacing-unit) * 1.5) calc(var(--spacing-unit) * 2);
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: var(--spacing-unit);
    font-size: 0.9rem;
}

.tab span {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 24px;
    height: 24px;
    background-color: rgba(255, 255, 255, 0.1);
    border-radius: 50%;
}

.tab.active {
    background-color: rgba(255, 87, 51, 0.1);
    color: var(--primary-color);
}

.feedback-content {
    padding: calc(var(--spacing-unit) * 4);
}

.feedback-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: calc(var(--spacing-unit) * 3);
}

.label {
    font-size: 0.8rem;
    color: rgba(229, 229, 229, 0.6);
}

.finish-later {
    background: none;
    border: none;
    color: rgba(229, 229, 229, 0.6);
    cursor: pointer;
    font-size: 0.8rem;
}

.feedback-content h2 {
    font-size: 1.5rem;
    margin-bottom: calc(var(--spacing-unit) * 4);
}

.rating {
    display: flex;
    gap: var(--spacing-unit);
    margin-bottom: calc(var(--spacing-unit) * 4);
}

.rating button {
    background-color: rgba(255, 255, 255, 0.1);
    border: none;
    color: var(--text-color);
    width: 40px;
    height: 40px;
    border-radius: 6px;
    cursor: pointer;
    transition: background-color 0.2s;
}

.rating button:hover {
    background-color: rgba(255, 87, 51, 0.2);
}

.feedback-footer {
    display: flex;
    gap: calc(var(--spacing-unit) * 2);
}

.feedback-footer button {
    display: flex;
    align-items: center;
    gap: var(--spacing-unit);
    background-color: rgba(255, 255, 255, 0.1);
    border: none;
    color: var(--text-color);
    padding: calc(var(--spacing-unit) * 1.5) calc(var(--spacing-unit) * 2);
    border-radius: 6px;
    cursor: pointer;
    font-size: 0.9rem;
}

.feedback-footer button:hover {
    background-color: rgba(255, 255, 255, 0.15);
}

/* Intelligence Section */
.intelligence-section {
    padding: calc(var(--spacing-unit) * 12) 0;
    text-align: center;
    position: relative;
}

.ai-label {
    display: inline-block;
    color: #FF5733;
    font-size: 0.9rem;
    margin-bottom: calc(var(--spacing-unit) * 3);
}

.intelligence-section h2 {
    font-size: 3.5rem;
    font-weight: 700;
    margin-bottom: calc(var(--spacing-unit) * 3);
    line-height: 1.2;
}

.intelligence-section .description {
    font-size: 1.2rem;
    color: rgba(229, 229, 229, 0.8);
    margin-bottom: calc(var(--spacing-unit) * 6);
}

.activity-feed {
    max-width: 400px;
    margin: 0 auto;
    background: rgba(42, 42, 42, 0.5);
    border-radius: 12px;
    padding: calc(var(--spacing-unit) * 2);
}

.activity-item {
    display: flex;
    align-items: center;
    gap: calc(var(--spacing-unit) * 2);
    padding: calc(var(--spacing-unit) * 1.5);
    border-radius: 8px;
    transition: background-color 0.2s;
}

.activity-item:hover {
    background: rgba(255, 255, 255, 0.05);
}

.avatar {
    width: 32px;
    height: 32px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 500;
    color: var(--text-color);
}

.activity-content {
    flex: 1;
}

.activity-header {
    display: flex;
    align-items: center;
    gap: calc(var(--spacing-unit));
    font-size: 0.9rem;
}

.activity-header .name {
    font-weight: 500;
    color: var(--text-color);
}

.activity-header .action {
    color: rgba(229, 229, 229, 0.6);
}

.activity-header .time {
    margin-left: auto;
    color: rgba(229, 229, 229, 0.4);
    font-size: 0.8rem;
}

/* Syntax Flow Section */
.syntax-cards {
    display: flex;
    flex-direction: row;
    gap: calc(var(--spacing-unit) * 6);
    margin-bottom: calc(var(--spacing-unit) * 8);
}

.syntax-group {
    display: flex;
    flex-direction: column;
    gap: calc(var(--spacing-unit) * 2);
    max-width: 600px;
    margin: 0 auto;
}

.syntax-text {
    color: var(--text-color);
    font-family: monospace;
    font-size: 1.1rem;
    padding: calc(var(--spacing-unit) * 2);
    background: rgba(255, 255, 255, 0.05);
    border-radius: 8px;
}

.card {
    padding: calc(var(--spacing-unit) * 3);
    border-radius: 12px;
    transition: transform 0.2s;
}

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

.card-content {
    display: flex;
    flex-direction: column;
    gap: calc(var(--spacing-unit) * 2);
}

.card-text {
    font-size: 1.2rem;
    font-weight: 500;
    color: #1A1A1A;
}

.card-label {
    font-size: 0.8rem;
    font-weight: 600;
    letter-spacing: 0.05em;
    color: rgba(0, 0, 0, 0.6);
}

.insight-card {
    background-color: #F8F0FF;
}

.quote-card {
    background-color: #FFE8E8;
}

.action-card {
    background-color: #E8FFE8;
}

/* Legend */
.syntax-legend {
    display: flex;
    justify-content: center;
    gap: calc(var(--spacing-unit) * 4);
    padding: calc(var(--spacing-unit) * 3);
    background: rgba(255, 255, 255, 0.05);
    border-radius: 12px;
    max-width: fit-content;
    margin: 0 auto;
}

.legend-item {
    display: flex;
    align-items: center;
    gap: calc(var(--spacing-unit) * 2);
}

.legend-icon {
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 6px;
    font-family: monospace;
    font-weight: 600;
    font-size: 1.1rem;
}

.question-icon {
    background-color: #E8E8FF;
    color: #4B4BA5;
}

.quote-icon {
    background-color: #FFE8E8;
    color: #A54B4B;
}

.insight-icon {
    background-color: #F8F0FF;
    color: #6B4BA5;
}

.action-icon {
    background-color: #E8FFE8;
    color: #4BA54B;
}

.legend-text {
    color: var(--text-color);
    font-size: 0.9rem;
}

/* Curve Separator */
.curve-separator {
    position: relative;
    width: 100%;
    height: 80px;
    margin: calc(var(--spacing-unit) * 3) 0;
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 10;
}

.curve-separator .line {
    width: 100%;
    height: 2px;
    background: var(--line-color);
    position: relative;
    opacity: 0.8;
    background: linear-gradient(
        to right,
        transparent,
        transparent 30%,
        var(--line-color) 50%,
        transparent 70%,
        transparent
    );
}

[data-theme="dark"] .curve-separator .line {
    opacity: 1;
}

.syntax-transform {
    width: 100%;
    max-width: 600px;
    margin: 0 auto;
    text-align: center;
}

.syntax-line {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: calc(var(--spacing-unit) * 2);
    margin-bottom: calc(var(--spacing-unit) * 2);
    font-family: monospace;
    font-size: 1rem;
    color: var(--text-secondary);
}

.syntax-marker {
    font-weight: bold;
    color: var(--text-color);
    opacity: 0.4;
    transition: opacity 0.3s ease;
}

.syntax-text {
    font-size: 0.9rem;
    letter-spacing: 0.5px;
}

.syntax-transform:hover .syntax-marker {
    opacity: 0.8;
}

.syntax-transform svg {
    width: 100%;
    height: 2px;
    margin-top: calc(var(--spacing-unit));
}

.syntax-transform path {
    animation: drawLine 1.5s ease-out forwards;
}

@keyframes drawLine {
    from {
        stroke-dashoffset: 800;
    }
    to {
        stroke-dashoffset: 0;
    }
}

/* Adjust spacing around the separator */
.syntax-legend {
    margin-bottom: calc(var(--spacing-unit) * 4);
}

.syntax-cards {
    margin-top: calc(var(--spacing-unit) * 4);
}

/* Responsive Design */
@media (max-width: 1200px) {
    .hero h1 {
        font-size: 3.5rem;
    }
    
    .connecting-line {
        display: none;
    }
    
    .browser-window {
        transform: perspective(1000px) rotateY(-5deg);
    }
}

@media (max-width: 768px) {
    .split-layout {
        grid-template-columns: 1fr;
        gap: calc(var(--spacing-unit) * 6);
    }
    
    .hero-visual {
        order: -1;
    }
    
    .nav-right {
        display: none;
    }
    
    .hero h1 {
        font-size: 2.5rem;
    }
    
    .subtitle {
        font-size: 1.2rem;
    }
    
    .cta-buttons {
        flex-direction: column;
    }
    
    .button-primary,
    .button-secondary {
        width: 100%;
        justify-content: center;
    }
    
    .browser-window {
        transform: none;
    }
    
    .browser-toolbar {
        padding: 8px;
    }
    
    .browser-address {
        font-size: 12px;
    }
}

/* Theme Toggle */
.theme-toggle {
    background: none;
    border: none;
    padding: 8px;
    cursor: pointer;
    color: var(--text-color);
    opacity: 0.7;
    transition: opacity 0.2s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 6px;
}

.theme-toggle:hover {
    opacity: 1;
    background: rgba(255, 255, 255, 0.1);
}

.theme-toggle svg {
    transition: transform 0.5s ease;
}

.theme-toggle:active svg {
    transform: rotate(360deg);
}

.theme-toggle .sun-beam {
    opacity: 0;
    transform-origin: center center;
    transition: all 0.3s ease;
}

.theme-toggle .moon {
    transform-origin: center center;
    transition: all 0.3s ease;
}

/* Light theme styles */
[data-theme="light"] {
    --text-color: #1A1A1A;
    --background-color: #FFFFFF;
    --secondary-background: #F5F5F5;
    --text-secondary: rgba(26, 26, 26, 0.7);
    --border-color: rgba(0, 0, 0, 0.1);
    --gradient-start: rgba(128, 128, 128, 0.2);
    --gradient-end: rgba(128, 128, 128, 0);
    --horizon-glow: rgba(78, 161, 255, 0.2);
    --line-color: #808080;
}

[data-theme="light"] .theme-toggle .sun-beam {
    opacity: 1;
}

[data-theme="light"] .theme-toggle .moon {
    transform: scale(0);
}

[data-theme="dark"] .theme-toggle .sun {
    transform: scale(0.7);
}

[data-theme="dark"] .theme-toggle .sun-beam {
    opacity: 0;
    transform: scale(0.3);
}

[data-theme="dark"] {
    --text-color: #E5E5E5;
    --background-color: #1A1A1A;
    --secondary-background: #2A2A2A;
    --text-secondary: rgba(229, 229, 229, 0.8);
    --border-color: rgba(255, 255, 255, 0.1);
    --gradient-start: rgba(200, 200, 200, 0.15);
    --gradient-end: rgba(200, 200, 200, 0);
    --line-color: #808080;
}