:root {
    --bg-primary: #0d0d0f;
    --bg-secondary: #16161a;
    --bg-tertiary: #1e1e24;
    --text-primary: #f0f0f0;
    --text-secondary: #a0a0a5;
    --text-muted: #6b6b70;
    --accent-cyan: #00ffd5;
    --accent-amber: #ffaa00;
    --accent-purple: #667eea;
    --accent-green: #4ade80;
    --border-subtle: rgba(255, 255, 255, 0.08);
}

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

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

.container {
    max-width: 1000px;
    margin: 0 auto;
    padding: 3rem 2rem;
}

/* Header */
header {
    text-align: center;
    padding: 2rem 0 1rem;
}

.logo-link {
    display: inline-block;
    margin-bottom: 1.5rem;
    transition: transform 0.2s;
}

.logo-link:hover {
    transform: scale(1.05);
}

.logo {
    width: 80px;
    height: 80px;
    border-radius: 1rem;
}

.badge-wrapper {
    display: block;
    text-align: center;
    margin-bottom: 1.5rem;
}

.badge {
    display: inline-block;
    background: transparent;
    color: var(--accent-cyan);
    border: 1px solid var(--accent-cyan);
    padding: 0.5rem 1.25rem;
    border-radius: 24px;
    font-size: 0.8rem;
    font-weight: 500;
    font-family: 'JetBrains Mono', monospace;
    letter-spacing: 0.02em;
}

h1 {
    font-family: 'JetBrains Mono', monospace;
    font-size: 3.5rem;
    font-weight: 600;
    margin-bottom: 0.75rem;
    background: linear-gradient(135deg, var(--accent-purple), var(--accent-cyan));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.tagline {
    font-size: 1.2rem;
    color: var(--text-secondary);
    max-width: 500px;
    margin: 0 auto;
}

/* Animated Demo Section */
.demo-section {
    display: flex;
    justify-content: center;
    padding: 1.5rem 0 2.5rem;
}

.demo-box {
    background: var(--bg-secondary);
    border-radius: 16px;
    padding: 2.5rem 4rem;
    text-align: center;
    border: 1px solid var(--border-subtle);
}

.robot-icon {
    font-size: 64px;
    margin-bottom: 1.25rem;
    animation: focus-bounce 2s ease-in-out infinite;
}

@keyframes focus-bounce {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-6px); }
}

/* Pomodoro Timer Animation */
.timer-display {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    margin-bottom: 1rem;
}

.timer-ring {
    width: 80px;
    height: 80px;
    position: relative;
}

.timer-ring svg {
    transform: rotate(-90deg);
    width: 100%;
    height: 100%;
}

.timer-ring circle {
    fill: none;
    stroke-width: 4;
}

.timer-ring .bg {
    stroke: var(--bg-tertiary);
}

.timer-ring .progress {
    stroke: url(#timer-gradient);
    stroke-linecap: round;
    stroke-dasharray: 226;
    stroke-dashoffset: 0;
    animation: timer-progress 25s linear infinite;
}

@keyframes timer-progress {
    0% { stroke-dashoffset: 0; }
    100% { stroke-dashoffset: 226; }
}

.timer-text {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    font-family: 'JetBrains Mono', monospace;
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--accent-cyan);
}

/* Focus Dots Animation */
.focus-dots {
    display: flex;
    justify-content: center;
    gap: 8px;
    height: 20px;
    align-items: center;
}

.focus-dots span {
    width: 8px;
    height: 8px;
    background: var(--accent-cyan);
    border-radius: 50%;
    animation: pulse-dot 1.5s ease-in-out infinite;
}

.focus-dots span:nth-child(1) { animation-delay: 0s; }
.focus-dots span:nth-child(2) { animation-delay: 0.2s; }
.focus-dots span:nth-child(3) { animation-delay: 0.4s; }
.focus-dots span:nth-child(4) { animation-delay: 0.2s; }
.focus-dots span:nth-child(5) { animation-delay: 0s; }

@keyframes pulse-dot {
    0%, 100% {
        transform: scale(1);
        opacity: 0.4;
    }
    50% {
        transform: scale(1.3);
        opacity: 1;
    }
}

/* Feature Grid - 6 cards, 3x2 on desktop */
.hero {
    padding: 1rem 0 2rem;
}

.feature-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.25rem;
}

.feature {
    background: var(--bg-secondary);
    padding: 1.5rem;
    border-radius: 12px;
    border: 1px solid var(--border-subtle);
    transition: transform 0.2s, border-color 0.2s, box-shadow 0.2s;
}

.feature:hover {
    transform: translateY(-4px);
    border-color: rgba(102, 126, 234, 0.3);
    box-shadow: 0 12px 40px rgba(102, 126, 234, 0.08);
}

.icon-box {
    width: 48px;
    height: 48px;
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 1rem;
}

.icon-box.cyan {
    background: rgba(0, 255, 213, 0.12);
    color: var(--accent-cyan);
}

.icon-box.amber {
    background: rgba(255, 170, 0, 0.12);
    color: var(--accent-amber);
}

.icon-box.purple {
    background: rgba(102, 126, 234, 0.12);
    color: var(--accent-purple);
}

.icon-box.green {
    background: rgba(74, 222, 128, 0.12);
    color: var(--accent-green);
}

.feature h3 {
    font-family: 'JetBrains Mono', monospace;
    font-size: 1rem;
    font-weight: 500;
    margin-bottom: 0.5rem;
    color: var(--text-primary);
}

.feature p {
    font-size: 0.875rem;
    color: var(--text-secondary);
    line-height: 1.5;
}

/* Install Section */
.install {
    background: var(--bg-secondary);
    padding: 2.5rem;
    border-radius: 16px;
    margin: 2.5rem 0;
    border: 1px solid var(--border-subtle);
}

.install h2 {
    font-family: 'JetBrains Mono', monospace;
    font-size: 1.25rem;
    margin-bottom: 1.5rem;
    color: var(--accent-purple);
    text-align: center;
}

.install-steps {
    display: flex;
    flex-direction: column;
    gap: 1.25rem;
}

.step {
    display: flex;
    align-items: flex-start;
    gap: 1rem;
}

.step-num {
    width: 32px;
    height: 32px;
    background: var(--bg-tertiary);
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--accent-purple);
    flex-shrink: 0;
}

.step-content {
    flex: 1;
}

.step-content h4 {
    font-size: 0.95rem;
    font-weight: 500;
    margin-bottom: 0.5rem;
    color: var(--text-primary);
}

.code-block {
    position: relative;
}

.step-content code {
    display: block;
    background: var(--bg-primary);
    padding: 0.75rem 1rem;
    padding-right: 4rem;
    border-radius: 8px;
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.8rem;
    overflow-x: auto;
    border: 1px solid var(--border-subtle);
    color: var(--accent-cyan);
}

.copy-btn {
    position: absolute;
    right: 0.5rem;
    top: 50%;
    transform: translateY(-50%);
    background: var(--bg-tertiary);
    border: 1px solid var(--border-subtle);
    color: var(--text-secondary);
    padding: 0.25rem 0.5rem;
    border-radius: 4px;
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.75rem;
    cursor: pointer;
    transition: all 0.2s;
}

.copy-btn:hover {
    background: var(--accent-cyan);
    color: var(--bg-primary);
    border-color: var(--accent-cyan);
}

.copy-btn.copied {
    background: var(--accent-cyan);
    color: var(--bg-primary);
    border-color: var(--accent-cyan);
}

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

.step-content strong {
    color: var(--accent-cyan);
    font-weight: 500;
}

/* How it works */
.how-it-works {
    padding: 2rem 0;
}

.how-it-works h2 {
    font-family: 'JetBrains Mono', monospace;
    font-size: 1.25rem;
    margin-bottom: 2rem;
    color: var(--text-primary);
    text-align: center;
}

.workflow {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 1rem;
    flex-wrap: wrap;
}

.workflow-step {
    text-align: center;
    padding: 1rem;
}

.workflow-icon {
    width: 64px;
    height: 64px;
    background: var(--bg-secondary);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 0.75rem;
    color: var(--accent-purple);
    border: 1px solid var(--border-subtle);
}

.workflow-step p {
    font-size: 0.875rem;
    color: var(--text-secondary);
    max-width: 120px;
}

.workflow-arrow {
    color: var(--text-muted);
    font-size: 1.5rem;
}

/* About */
.about {
    padding: 2rem 0;
    text-align: center;
    max-width: 700px;
    margin: 0 auto;
}

.about h2 {
    font-family: 'JetBrains Mono', monospace;
    font-size: 1.25rem;
    margin-bottom: 1.25rem;
    color: var(--text-primary);
}

.about p {
    color: var(--text-secondary);
    margin-bottom: 1rem;
    font-size: 1rem;
    line-height: 1.7;
}

.about a {
    color: var(--accent-cyan);
    text-decoration: none;
}

.about a:hover {
    text-decoration: underline;
}

.about strong {
    color: var(--accent-cyan);
    font-weight: 500;
}

.about-links {
    display: flex;
    gap: 2rem;
    justify-content: center;
    margin-top: 1.5rem;
    flex-wrap: wrap;
}

.about-links a {
    color: var(--accent-purple);
    text-decoration: none;
    font-weight: 500;
    transition: color 0.2s;
}

.about-links a:hover {
    color: var(--accent-cyan);
}

/* Footer */
footer {
    text-align: center;
    padding: 2.5rem 0 1rem;
    border-top: 1px solid var(--border-subtle);
    margin-top: 2rem;
}

.footer-logo-link {
    display: inline-flex;
    align-items: center;
    gap: 0.75rem;
    text-decoration: none;
    margin-bottom: 1.5rem;
    transition: transform 0.2s;
}

.footer-logo-link:hover {
    transform: scale(1.02);
}

.footer-logo {
    width: 48px;
    height: 48px;
    border-radius: 0.5rem;
}

.footer-site-name {
    font-family: 'JetBrains Mono', monospace;
    font-size: 1.25rem;
    color: var(--accent-cyan);
}

.footer-links {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 1.5rem;
    margin-bottom: 1.5rem;
}

.footer-links a {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 0.875rem;
    transition: color 0.2s;
}

.footer-links a:hover {
    color: var(--accent-cyan);
}

.social-icon {
    width: 1.25rem;
    height: 1.25rem;
}

.copyright {
    font-size: 0.8rem;
    color: var(--text-muted);
    font-family: 'JetBrains Mono', monospace;
}

/* Responsive */
@media (max-width: 900px) {
    .feature-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 600px) {
    h1 {
        font-size: 2.5rem;
    }

    .container {
        padding: 2rem 1.25rem;
    }

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

    .workflow {
        flex-direction: column;
    }

    .workflow-arrow {
        transform: rotate(90deg);
    }

    .install {
        padding: 1.5rem;
    }

    .demo-box {
        padding: 2rem;
    }
}