.hero {
    position: relative;
    z-index: var(--z-base);
    min-height: 100vh;
    display: grid;
    grid-template-columns: 1fr 1.1fr;
    align-items: center;
    gap: var(--space-12);
    padding: calc(80px + var(--space-16)) var(--container-padding) var(--space-16);
    max-width: var(--container-max);
    margin: 0 auto;
    overflow: hidden;
}

.hero-content {
    max-width: 560px;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: var(--space-2);
    font-size: var(--text-sm);
    font-weight: var(--font-medium);
    color: var(--accent-cyan);
    background: rgba(34, 211, 238, 0.08);
    border: 1px solid rgba(34, 211, 238, 0.15);
    padding: var(--space-2) var(--space-4);
    border-radius: var(--radius-full);
    margin-bottom: var(--space-6);
}

.badge-dot {
    width: 6px;
    height: 6px;
    background: var(--accent-cyan);
    border-radius: 50%;
    animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 1; transform: scale(1); }
    50% { opacity: 0.5; transform: scale(0.8); }
}

.hero-title {
    font-size: var(--text-5xl);
    font-weight: var(--font-extrabold);
    line-height: var(--leading-tight);
    letter-spacing: -0.03em;
    margin-bottom: var(--space-6);
    color: var(--text-primary);
}

.hero-description {
    font-size: var(--text-lg);
    color: var(--text-secondary);
    line-height: var(--leading-relaxed);
    margin-bottom: var(--space-8);
    max-width: 480px;
}

.hero-actions {
    display: flex;
    gap: var(--space-4);
    margin-bottom: var(--space-12);
}

.hero-stats {
    display: flex;
    gap: var(--space-10);
    padding-top: var(--space-8);
    border-top: 1px solid var(--border-subtle);
}

.stat-item {
    display: flex;
    flex-direction: column;
    gap: var(--space-1);
}

.stat-number {
    font-size: var(--text-3xl);
    font-weight: var(--font-bold);
    color: var(--text-primary);
    font-variant-numeric: tabular-nums;
}

.stat-label {
    font-size: var(--text-sm);
    color: var(--text-tertiary);
    font-weight: var(--font-medium);
}


.hero-preview {
    position: relative;
    perspective: 1000px;
}

.editor-window {
    background: var(--bg-secondary);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-xl);
    overflow: hidden;
    box-shadow: 0 25px 80px rgba(0, 0, 0, 0.6), 0 0 0 1px rgba(255, 255, 255, 0.05);
    transform: rotateY(-5deg) rotateX(2deg);
    transition: transform var(--transition-slow);
    animation: editorFloat 6s ease-in-out infinite;
}

.editor-window:hover {
    transform: rotateY(-2deg) rotateX(1deg);
}

@keyframes editorFloat {
    0%, 100% { transform: rotateY(-5deg) rotateX(2deg) translateY(0); }
    50% { transform: rotateY(-5deg) rotateX(2deg) translateY(-10px); }
}

.editor-header {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    padding: var(--space-3) var(--space-4);
    background: var(--bg-tertiary);
    border-bottom: 1px solid var(--border-subtle);
}

.editor-dots {
    display: flex;
    gap: 6px;
}

.dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
}

.dot-red { background: #f87171; }
.dot-yellow { background: #fbbf24; }
.dot-green { background: #34d399; }

.editor-filename {
    font-size: var(--text-xs);
    font-weight: var(--font-medium);
    color: var(--text-tertiary);
    margin-left: var(--space-2);
}

.editor-actions {
    margin-left: auto;
}

.editor-run-btn {
    font-size: var(--text-xs);
    font-weight: var(--font-semibold);
    color: var(--accent-green);
    background: rgba(52, 211, 153, 0.1);
    border: 1px solid rgba(52, 211, 153, 0.2);
    padding: var(--space-1) var(--space-3);
    border-radius: var(--radius-sm);
}

.editor-body {
    display: flex;
    min-height: 280px;
    font-family: var(--font-mono);
    font-size: var(--text-sm);
    line-height: 1.8;
}

.line-numbers {
    display: flex;
    flex-direction: column;
    align-items: flex-end;
    padding: var(--space-4) var(--space-4) var(--space-4) var(--space-5);
    background: rgba(0, 0, 0, 0.2);
    color: var(--text-muted);
    font-size: var(--text-xs);
    line-height: 1.8;
    user-select: none;
    border-right: 1px solid var(--border-subtle);
}

.code-content {
    flex: 1;
    padding: var(--space-4) var(--space-5);
    overflow-x: auto;
}

.code-content pre {
    margin: 0;
    white-space: pre;
}

.code-content code {
    font-family: inherit;
    color: var(--text-primary);
}

.token-keyword { color: #c678dd; }
.token-function { color: #61afef; }
.token-string { color: #98c379; }
.token-builtin { color: #e5c07b; }
.token-comment { color: var(--text-muted); font-style: italic; }

.editor-console {
    border-top: 1px solid var(--border-subtle);
    background: rgba(0, 0, 0, 0.3);
}

.console-header {
    font-size: var(--text-xs);
    font-weight: var(--font-semibold);
    color: var(--text-tertiary);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    padding: var(--space-2) var(--space-4);
    border-bottom: 1px solid var(--border-subtle);
}

.console-output {
    padding: var(--space-3) var(--space-4);
    font-family: var(--font-mono);
    font-size: var(--text-sm);
    color: var(--text-secondary);
    min-height: 40px;
}

.console-line {
    display: block;
}

.console-cursor {
    display: inline-block;
    width: 8px;
    height: 16px;
    background: var(--accent-green);
    animation: blink 1s step-end infinite;
    vertical-align: middle;
    margin-left: 2px;
}

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


.roadmap {
    position: relative;
    z-index: var(--z-base);
    padding: var(--section-gap) 0;
}

.roadmap-track {
    position: relative;
    max-width: 800px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    gap: var(--space-8);
}

.roadmap-line {
    position: absolute;
    left: 50%;
    top: 0;
    bottom: 0;
    width: 2px;
    background: linear-gradient(to bottom, var(--accent-blue), var(--accent-purple), var(--accent-cyan));
    transform: translateX(-50%);
    opacity: 0.3;
}

.roadmap-card {
    display: grid;
    grid-template-columns: 1fr 1fr;
    align-items: center;
    gap: var(--space-8);
    position: relative;
}

.roadmap-card:nth-child(even) {
    direction: rtl;
}

.roadmap-card:nth-child(even) > * {
    direction: ltr;
}

.roadmap-card:nth-child(even) .roadmap-marker {
    justify-self: start;
    margin-left: var(--space-4);
}

.roadmap-marker {
    display: flex;
    align-items: center;
    justify-content: center;
    justify-self: end;
    margin-right: var(--space-4);
}

.marker-number {
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: var(--text-lg);
    font-weight: var(--font-bold);
    color: var(--text-primary);
    background: var(--gradient-primary);
    border-radius: 50%;
    box-shadow: 0 0 20px rgba(59, 130, 246, 0.3);
    position: relative;
    z-index: 2;
}

.roadmap-content {
    padding: var(--space-8);
}

.roadmap-icon {
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg-elevated);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-md);
    color: var(--accent-blue-light);
    margin-bottom: var(--space-4);
}

.roadmap-title {
    font-size: var(--text-2xl);
    font-weight: var(--font-bold);
    margin-bottom: var(--space-3);
    color: var(--text-primary);
}

.roadmap-desc {
    color: var(--text-secondary);
    line-height: var(--leading-relaxed);
    margin-bottom: var(--space-4);
}

.roadmap-meta {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    font-size: var(--text-sm);
    color: var(--text-tertiary);
    margin-bottom: var(--space-6);
}

.meta-separator {
    color: var(--text-muted);
}

.roadmap-link {
    display: inline-flex;
    align-items: center;
    gap: var(--space-2);
    font-size: var(--text-sm);
    font-weight: var(--font-semibold);
    color: var(--accent-blue-light);
    transition: gap var(--transition-fast);
}

.roadmap-link:hover {
    gap: var(--space-3);
}

.roadmap-link svg {
    transition: transform var(--transition-fast);
}

.roadmap-link:hover svg {
    transform: translateX(3px);
}

/* ─── Challenges Preview ─── */
.challenges-preview {
    position: relative;
    z-index: var(--z-base);
    padding: var(--section-gap) 0;
}

.challenge-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-6);
    margin-bottom: var(--space-10);
}

.challenge-card {
    padding: var(--space-6);
    display: flex;
    flex-direction: column;
    height: 100%;
    transition: transform var(--transition-base), box-shadow var(--transition-base);
}

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

.challenge-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--space-4);
}

.challenge-points {
    font-size: var(--text-sm);
    font-weight: var(--font-semibold);
    color: var(--accent-yellow);
}

.challenge-title {
    font-size: var(--text-xl);
    font-weight: var(--font-bold);
    margin-bottom: var(--space-3);
    color: var(--text-primary);
}

.challenge-desc {
    color: var(--text-secondary);
    line-height: var(--leading-relaxed);
    font-size: var(--text-sm);
    flex: 1;
    margin-bottom: var(--space-6);
}

.challenge-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: var(--space-4);
    border-top: 1px solid var(--border-subtle);
}

.challenge-tags {
    display: flex;
    gap: var(--space-2);
}

.challenge-arrow {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg-elevated);
    border: 1px solid var(--border-subtle);
    border-radius: 50%;
    color: var(--text-secondary);
    transition: all var(--transition-base);
}

.challenge-arrow:hover {
    background: var(--accent-blue);
    border-color: var(--accent-blue);
    color: #fff;
    transform: scale(1.1);
}

.section-footer {
    text-align: center;
}


.features {
    position: relative;
    z-index: var(--z-base);
    padding: var(--section-gap) 0;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-6);
}

.feature-card {
    padding: var(--space-8);
    transition: transform var(--transition-base);
}

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

.feature-icon {
    width: 52px;
    height: 52px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, rgba(59, 130, 246, 0.15), rgba(139, 92, 246, 0.15));
    border: 1px solid rgba(59, 130, 246, 0.2);
    border-radius: var(--radius-md);
    color: var(--accent-blue-light);
    margin-bottom: var(--space-5);
}

.feature-title {
    font-size: var(--text-lg);
    font-weight: var(--font-semibold);
    margin-bottom: var(--space-3);
    color: var(--text-primary);
}

.feature-desc {
    color: var(--text-secondary);
    line-height: var(--leading-relaxed);
    font-size: var(--text-sm);
}


.cta {
    position: relative;
    z-index: var(--z-base);
    padding: var(--section-gap) 0;
}

.cta-container {
    max-width: 900px;
    margin: 0 auto;
    padding: var(--space-16) var(--space-12);
    position: relative;
    overflow: hidden;
    text-align: center;
}

.cta-content {
    position: relative;
    z-index: 2;
}

.cta-title {
    font-size: var(--text-4xl);
    font-weight: var(--font-bold);
    line-height: var(--leading-tight);
    margin-bottom: var(--space-4);
}

.cta-desc {
    font-size: var(--text-lg);
    color: var(--text-secondary);
    line-height: var(--leading-relaxed);
    max-width: 560px;
    margin: 0 auto var(--space-8);
}

.cta-actions {
    display: flex;
    gap: var(--space-4);
    justify-content: center;
    flex-wrap: wrap;
}

.cta-decoration {
    position: absolute;
    inset: 0;
    pointer-events: none;
}

.cta-orb {
    position: absolute;
    width: 300px;
    height: 300px;
    background: radial-gradient(circle, rgba(59, 130, 246, 0.2) 0%, transparent 70%);
    border-radius: 50%;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    filter: blur(60px);
    animation: ctaPulse 4s ease-in-out infinite;
}

@keyframes ctaPulse {
    0%, 100% { transform: translate(-50%, -50%) scale(1); opacity: 0.6; }
    50% { transform: translate(-50%, -50%) scale(1.2); opacity: 0.8; }
}


@media (max-width: 1024px) {
    .hero {
        grid-template-columns: 1fr;
        text-align: center;
        gap: var(--space-10);
        padding-top: calc(80px + var(--space-12));
    }

    .hero-content {
        max-width: 600px;
        margin: 0 auto;
    }

    .hero-description {
        margin: 0 auto var(--space-8);
    }

    .hero-actions {
        justify-content: center;
    }

    .hero-stats {
        justify-content: center;
    }

    .hero-preview {
        max-width: 600px;
        margin: 0 auto;
    }

    .editor-window {
        transform: none;
        animation: none;
    }

    .challenge-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .features-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .hero-title {
        font-size: var(--text-4xl);
    }

    .hero-actions {
        flex-direction: column;
    }

    .hero-stats {
        gap: var(--space-6);
    }

    .roadmap-track {
        padding-left: var(--space-8);
    }

    .roadmap-line {
        left: 20px;
        transform: none;
    }

    .roadmap-card {
        grid-template-columns: 1fr;
        gap: var(--space-4);
    }

    .roadmap-card:nth-child(even) {
        direction: ltr;
    }

    .roadmap-marker {
        justify-self: start;
        margin: 0;
    }

    .marker-number {
        width: 40px;
        height: 40px;
        font-size: var(--text-base);
    }

    .roadmap-content {
        padding: var(--space-6);
    }

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

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

    .cta-container {
        padding: var(--space-12) var(--space-6);
    }

    .cta-title {
        font-size: var(--text-3xl);
    }

    .cta-actions {
        flex-direction: column;
    }
}

@media (max-width: 480px) {
    .hero-title {
        font-size: var(--text-3xl);
    }

    .hero-stats {
        flex-direction: column;
        gap: var(--space-4);
        text-align: center;
    }

    .editor-body {
        min-height: 220px;
    }

    .code-content {
        padding: var(--space-3);
        font-size: var(--text-xs);
    }

    .line-numbers {
        padding: var(--space-3);
        font-size: 10px;
    }
}