/* === Reset & Variables === */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --bg: #fafaf9;
    --surface: #ffffff;
    --dark: #1a1816;
    --dark-surface: #242220;
    --text: #1a1816;
    --text-secondary: #6b635a;
    --text-muted: #9c948b;
    --text-on-dark: #e8e5e1;
    --text-on-dark-muted: #9c948b;
    --accent: #4a6e5a;
    --accent-hover: #3a5a48;
    --border: #e5e2dd;
    --border-dark: rgba(255, 255, 255, 0.08);
    --font-serif: 'Instrument Serif', Georgia, serif;
    --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    --font-mono: 'JetBrains Mono', 'SF Mono', monospace;
    --max-width: 1200px;
    --radius: 6px;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-sans);
    background: var(--bg);
    color: var(--text);
    line-height: 1.6;
    font-size: 17px;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* === Top Accent Stripe === */
.top-stripe {
    height: 3px;
    background: var(--accent);
}

/* === Layout === */
.container {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 24px;
}

.section {
    padding: 56px 0;
}

.section-dark {
    background: var(--dark);
    color: var(--text-on-dark);
}

/* === Section Headers === */
.section-header {
    text-align: center;
    margin-bottom: 36px;
}

.section-label {
    display: inline-block;
    font-family: var(--font-mono);
    font-size: 0.78rem;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.12em;
    color: var(--accent);
    margin-bottom: 12px;
}

.section-label-light {
    color: var(--accent);
    opacity: 0.8;
}

.section-title {
    font-family: var(--font-serif);
    font-size: clamp(2.25rem, 4.5vw, 3.25rem);
    font-weight: 400;
    line-height: 1.2;
    letter-spacing: -0.01em;
}

.section-desc {
    color: var(--text-on-dark-muted);
    font-size: 1.2rem;
    margin-top: 12px;
}

/* === Hero === */
.hero {
    padding: 48px 0 56px;
    text-align: center;
}

.hero-logo {
    max-width: 270px;
    width: 100%;
    height: auto;
    margin-bottom: 28px;
}

.hero-title {
    font-family: var(--font-serif);
    font-size: clamp(2.75rem, 6.5vw, 4.5rem);
    font-weight: 400;
    line-height: 1.1;
    letter-spacing: -0.02em;
    margin-bottom: 28px;
    color: var(--text);
}

.hero-subtitle {
    font-size: clamp(1.1rem, 1.8vw, 1.3rem);
    color: var(--text-secondary);
    max-width: 600px;
    margin: 0 auto 28px;
    line-height: 1.65;
}

.hero-cta {
    display: flex;
    gap: 12px;
    justify-content: center;
    flex-wrap: wrap;
}

/* === Buttons === */
.btn {
    display: inline-flex;
    align-items: center;
    padding: 14px 32px;
    border-radius: var(--radius);
    font-family: var(--font-sans);
    font-weight: 500;
    font-size: 1rem;
    text-decoration: none;
    transition: all 0.2s ease;
    cursor: pointer;
    border: none;
}

.btn-primary {
    background: var(--accent);
    color: #fff;
}

.btn-primary:hover {
    background: var(--accent-hover);
    transform: translateY(-1px);
}

.btn-outline {
    background: transparent;
    color: var(--text);
    border: 1.5px solid var(--border);
}

.btn-outline:hover {
    border-color: var(--text-secondary);
    background: rgba(0, 0, 0, 0.02);
}

/* === Capabilities === */
.capabilities {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
}

.capability-card {
    padding: 24px 22px;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.capability-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.06);
}

.capability-icon {
    font-size: 1.5rem;
    display: block;
    margin-bottom: 10px;
}

.capability-card h3 {
    font-family: var(--font-sans);
    font-size: 1.15rem;
    font-weight: 600;
    margin-bottom: 8px;
    color: var(--text);
}

.capability-card p {
    font-size: 1.02rem;
    color: var(--text-secondary);
    line-height: 1.65;
}

/* === Principles === */
.principles {
    max-width: 640px;
    margin: 0 auto;
}

.principle {
    display: flex;
    gap: 20px;
    align-items: flex-start;
    padding: 18px 0;
    border-bottom: 1px solid var(--border-dark);
}

.principle:last-child {
    border-bottom: none;
}

.principle-num {
    font-family: var(--font-mono);
    font-size: 0.85rem;
    color: var(--accent);
    opacity: 0.7;
    padding-top: 3px;
    flex-shrink: 0;
}

.principle h4 {
    font-family: var(--font-serif);
    font-size: 1.35rem;
    font-weight: 400;
    margin-bottom: 6px;
    color: var(--text-on-dark);
}

.principle p {
    font-size: 1.05rem;
    color: var(--text-on-dark-muted);
    line-height: 1.65;
}

/* === Vision === */
.vision {
    text-align: center;
    max-width: 620px;
    margin: 0 auto;
}

.vision h2 {
    font-family: var(--font-serif);
    font-size: clamp(2rem, 4vw, 3rem);
    font-weight: 400;
    margin-bottom: 20px;
    color: var(--text);
    line-height: 1.2;
}

.vision-lead {
    font-family: var(--font-serif);
    font-size: 1.5rem;
    font-style: italic;
    color: var(--text);
    margin-bottom: 14px;
}

.vision p {
    font-size: 1.15rem;
    color: var(--text-secondary);
    margin-bottom: 12px;
    line-height: 1.7;
}

.vision p:last-child {
    margin-bottom: 0;
}

/* === Live Projects === */
.project-category {
    margin-bottom: 36px;
}

.project-category:last-child {
    margin-bottom: 0;
}

.category-title {
    font-family: var(--font-serif);
    font-size: 1.5rem;
    font-weight: 400;
    margin-bottom: 6px;
    color: var(--text);
}

.category-desc {
    font-size: 1rem;
    color: var(--text-secondary);
    margin-bottom: 16px;
}

.project-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 12px;
}

.project-link {
    display: block;
    padding: 16px 18px;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    text-decoration: none;
    transition: transform 0.2s ease, box-shadow 0.2s ease, border-color 0.2s ease;
}

.project-link:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(0, 0, 0, 0.06);
    border-color: var(--accent);
}

.project-name {
    display: block;
    font-family: var(--font-mono);
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--accent);
    margin-bottom: 4px;
}

.project-desc {
    display: block;
    font-size: 0.92rem;
    color: var(--text-secondary);
    line-height: 1.4;
}

/* === Contact === */
.contact-options {
    display: flex;
    justify-content: center;
    gap: 20px;
    flex-wrap: wrap;
}

.contact-card {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    padding: 28px 36px;
    background: var(--dark-surface);
    border: 1px solid var(--border-dark);
    border-radius: var(--radius);
    text-decoration: none;
    color: inherit;
    transition: transform 0.2s ease, border-color 0.2s ease;
    min-width: 220px;
}

.contact-card:hover {
    transform: translateY(-2px);
    border-color: rgba(255, 255, 255, 0.15);
}

.contact-icon {
    font-size: 1.5rem;
    margin-bottom: 12px;
}

.contact-card h3 {
    font-family: var(--font-sans);
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: 4px;
    color: var(--text-on-dark);
}

.contact-card p {
    font-size: 0.95rem;
    color: var(--text-on-dark-muted);
}

/* === Footer === */
.footer {
    background: var(--dark);
    color: var(--text-on-dark-muted);
    padding: 32px 0;
    text-align: center;
    border-top: 1px solid var(--border-dark);
}

.footer p {
    font-size: 0.95rem;
}

/* === Reveal Animations === */
.reveal {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

.reveal.revealed {
    opacity: 1;
    transform: translateY(0);
}

.hero .reveal:nth-child(1) { transition-delay: 0s; }
.hero .reveal:nth-child(2) { transition-delay: 0.12s; }
.hero .reveal:nth-child(3) { transition-delay: 0.24s; }
.hero .reveal:nth-child(4) { transition-delay: 0.36s; }

/* === Responsive: Mobile === */
@media (max-width: 768px) {
    body {
        font-size: 16px;
    }

    .hero {
        padding: 40px 0 48px;
    }

    .hero-logo {
        max-width: 210px;
        margin-bottom: 24px;
    }

    .hero-title {
        margin-bottom: 16px;
    }

    .hero-subtitle {
        font-size: 1.05rem;
        margin-bottom: 28px;
    }

    .section {
        padding: 44px 0;
    }

    .section-header {
        margin-bottom: 28px;
    }

    .section-title {
        font-size: 2rem;
    }

    .capability-icon {
        font-size: 1.5rem;
        margin-bottom: 12px;
    }

    .capability-card {
        padding: 20px 18px;
    }

    .capability-card h3 {
        font-size: 1.05rem;
    }

    .capability-card p {
        font-size: 0.95rem;
    }

    .capabilities {
        grid-template-columns: 1fr;
        gap: 14px;
    }

    .principle {
        gap: 14px;
        padding: 16px 0;
    }

    .principle h4 {
        font-size: 1.2rem;
    }

    .principle p {
        font-size: 1rem;
    }

    .vision h2 {
        font-size: 1.85rem;
    }

    .vision-lead {
        font-size: 1.25rem;
    }

    .vision p {
        font-size: 1.05rem;
    }

    .project-grid {
        grid-template-columns: 1fr;
        gap: 10px;
    }

    .category-title {
        font-size: 1.3rem;
    }

    .project-category {
        margin-bottom: 28px;
    }

    .btn {
        padding: 13px 28px;
        font-size: 0.95rem;
    }

    .contact-options {
        flex-direction: column;
        align-items: center;
    }

    .contact-card {
        width: 100%;
        max-width: 300px;
        padding: 22px 28px;
    }
}

/* === Responsive: Tablet === */
@media (min-width: 769px) and (max-width: 1024px) {
    .capabilities {
        grid-template-columns: repeat(2, 1fr);
    }

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

/* === Responsive: Large Desktop === */
@media (min-width: 1200px) {
    body {
        font-size: 19px;
    }

    .container {
        max-width: 1320px;
        padding: 0 40px;
    }

    .hero {
        padding: 64px 0 72px;
    }

    .hero-logo {
        max-width: 330px;
        margin-bottom: 36px;
    }

    .hero-title {
        font-size: 5rem;
        margin-bottom: 24px;
    }

    .hero-subtitle {
        font-size: 1.4rem;
        max-width: 700px;
    }

    .section {
        padding: 72px 0;
    }

    .section-title {
        font-size: 3.5rem;
    }

    .section-label {
        font-size: 0.85rem;
    }

    .section-desc {
        font-size: 1.3rem;
    }

    .capabilities {
        gap: 24px;
    }

    .capability-card {
        padding: 40px 36px;
    }

    .capability-icon {
        font-size: 2rem;
    }

    .capability-card h3 {
        font-size: 1.3rem;
    }

    .capability-card p {
        font-size: 1.1rem;
    }

    .principles {
        max-width: 800px;
    }

    .principle {
        padding: 20px 0;
    }

    .principle h4 {
        font-size: 1.55rem;
    }

    .principle p {
        font-size: 1.15rem;
    }

    .vision {
        max-width: 760px;
    }

    .vision h2 {
        font-size: 3.25rem;
    }

    .vision-lead {
        font-size: 1.65rem;
    }

    .vision p {
        font-size: 1.25rem;
    }

    .project-category {
        margin-bottom: 44px;
    }

    .category-title {
        font-size: 1.65rem;
    }

    .category-desc {
        font-size: 1.08rem;
    }

    .project-link {
        padding: 20px 22px;
    }

    .project-name {
        font-size: 0.9rem;
    }

    .project-desc {
        font-size: 1rem;
    }

    .contact-card {
        padding: 32px 44px;
    }

    .contact-card h3 {
        font-size: 1.2rem;
    }

    .contact-card p {
        font-size: 1.05rem;
    }

    .btn {
        padding: 16px 36px;
        font-size: 1.08rem;
    }
}

/* === Utilities === */
.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border-width: 0;
}