/* ================================================================
   TRIVILO TECHNOLOGIES — DESIGN SYSTEM
   Soft white / ink / cobalt+teal duotone / Space Grotesk + Inter + JetBrains Mono
   ================================================================ */

:root {
    --bg: #F7F7F4;
    --bg-card: #FFFFFF;
    --bg-ink: #12141F;
    --ink: #14161F;
    --ink-soft: #4A4E5A;
    --muted: #8A8F98;
    --border: #E6E5E0;
    --border-strong: #D8D7D0;
    --accent: #3B5BFD;
    --accent-ink: #2540D6;
    --accent-2: #00B89C;
    --accent-2-ink: #009781;
    --amber: #FFB100;
    --radius-sm: 6px;
    --radius-md: 12px;
    --radius-lg: 20px;
    --shadow-soft: 0 4px 24px rgba(20, 22, 31, 0.06);
    --shadow-lift: 0 16px 40px rgba(20, 22, 31, 0.12);
    --maxw: 1180px;
}

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

html { scroll-behavior: smooth; }

@media (prefers-reduced-motion: reduce) {
    html { scroll-behavior: auto; }
    *, *::before, *::after { animation-duration: 0.01ms !important; animation-iteration-count: 1 !important; transition-duration: 0.01ms !important; }
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    background: var(--bg);
    color: var(--ink);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
}

h1, h2, h3, h4 {
    font-family: 'Space Grotesk', 'Inter', sans-serif;
    color: var(--ink);
    line-height: 1.15;
    letter-spacing: -0.01em;
}

a { color: inherit; text-decoration: none; }

img { max-width: 100%; display: block; }

.mono {
    font-family: 'JetBrains Mono', monospace;
}

.container {
    max-width: var(--maxw);
    margin: 0 auto;
    padding: 0 32px;
}

.eyebrow {
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.78rem;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--accent);
    display: inline-flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 14px;
}
.eyebrow::before {
    content: '';
    width: 8px;
    height: 8px;
    background: var(--accent-2);
    border-radius: 50%;
    display: inline-block;
}

:focus-visible {
    outline: 2px solid var(--accent);
    outline-offset: 3px;
}

/* ----- BUTTONS ----- */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 13px 26px;
    border-radius: 999px;
    font-family: 'Inter', sans-serif;
    font-weight: 600;
    font-size: 0.95rem;
    border: none;
    cursor: pointer;
    transition: transform 0.25s cubic-bezier(.2,.8,.2,1), box-shadow 0.25s ease, background 0.25s ease;
}
.btn-primary {
    background: var(--bg-ink);
    color: #fff;
}
.btn-primary:hover {
    background: var(--accent-ink);
    transform: translateY(-2px);
    box-shadow: var(--shadow-lift);
}
.btn-outline {
    background: transparent;
    color: var(--ink);
    border: 1.5px solid var(--border-strong);
}
.btn-outline:hover {
    border-color: var(--ink);
    transform: translateY(-2px);
}
.btn-sm {
    padding: 9px 18px;
    font-size: 0.85rem;
}

/* ----- NAV ----- */
.nav-wrap {
    position: sticky;
    top: 0;
    z-index: 100;
    background: rgba(247, 247, 244, 0.85);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--border);
}
.nav-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 18px 0;
}
.logo-mark {
    font-family: 'JetBrains Mono', monospace;
    font-size: 1.15rem;
    font-weight: 500;
    color: var(--ink);
    display: flex;
    align-items: center;
}
.logo-mark .dot {
    color: var(--accent);
}
.logo-cursor {
    display: inline-block;
    width: 9px;
    height: 1.1em;
    background: var(--accent-2);
    margin-left: 4px;
    animation: blink 1.1s steps(2) infinite;
    vertical-align: text-bottom;
}
@keyframes blink {
    0%, 45% { opacity: 1; }
    50%, 100% { opacity: 0; }
}
.nav-links {
    display: flex;
    align-items: center;
    gap: 34px;
}
.nav-links a {
    font-size: 0.92rem;
    font-weight: 500;
    color: var(--ink-soft);
    position: relative;
    padding: 4px 0;
}
.nav-links a::after {
    content: '';
    position: absolute;
    left: 0; bottom: -2px;
    width: 0; height: 2px;
    background: linear-gradient(90deg, var(--accent), var(--accent-2));
    transition: width 0.25s ease;
}
.nav-links a:hover::after, .nav-links a.active::after { width: 100%; }
.nav-links a.active { color: var(--ink); }
.nav-cta { display: flex; align-items: center; gap: 18px; }
.menu-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 6px;
}
.menu-toggle span {
    width: 22px; height: 2px;
    background: var(--ink);
    transition: 0.3s;
}

/* ----- HERO ----- */
.hero {
    padding: 90px 0 70px;
}
.hero-grid {
    display: grid;
    grid-template-columns: 1.05fr 0.95fr;
    gap: 60px;
    align-items: center;
}
.hero h1 {
    font-size: clamp(2.4rem, 4.2vw, 3.6rem);
    margin-bottom: 22px;
}
.hero h1 .accent-text {
    color: var(--accent);
}
.hero p.lead {
    font-size: 1.12rem;
    color: var(--ink-soft);
    max-width: 480px;
    margin-bottom: 32px;
}
.hero-actions {
    display: flex;
    gap: 14px;
    margin-bottom: 40px;
}
.hero-trust {
    display: flex;
    gap: 28px;
    flex-wrap: wrap;
}
.hero-trust .stat {
    font-family: 'Space Grotesk', sans-serif;
}
.hero-trust .stat strong {
    display: block;
    font-size: 1.5rem;
    color: var(--ink);
}
.hero-trust .stat span {
    font-size: 0.8rem;
    color: var(--muted);
    font-family: 'Inter', sans-serif;
}

/* ----- CODE PANEL (signature element) ----- */
.code-panel {
    background: var(--bg-ink);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lift);
    overflow: hidden;
    transform: rotate(1deg);
}
.code-panel-header {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 14px 18px;
    background: #1B1E2E;
    border-bottom: 1px solid rgba(255,255,255,0.06);
}
.code-dot { width: 11px; height: 11px; border-radius: 50%; }
.code-dot.red { background: #FF5F57; }
.code-dot.yellow { background: #FEBC2E; }
.code-dot.green { background: #28C840; }
.code-panel-title {
    margin-left: 8px;
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.78rem;
    color: #8a8fa3;
}
.code-panel-body {
    padding: 26px 24px;
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.88rem;
    line-height: 1.9;
    min-height: 280px;
}
.code-line { color: #8a8fa3; }
.code-line .prompt { color: var(--accent-2); }
.code-line .path { color: #e8e9ee; }
.code-line .ok { color: var(--accent-2); }
.code-line .comment { color: #565b70; }
.typing-cursor {
    display: inline-block;
    width: 8px;
    height: 1em;
    background: var(--accent-2);
    vertical-align: text-bottom;
    animation: blink 1s steps(2) infinite;
}

/* ----- SECTION HELPERS ----- */
.section {
    padding: 90px 0;
}
.section-alt {
    background: var(--bg-card);
    border-top: 1px solid var(--border);
    border-bottom: 1px solid var(--border);
}
.section-head {
    max-width: 620px;
    margin-bottom: 52px;
}
.section-head h2 {
    font-size: clamp(1.8rem, 3vw, 2.4rem);
    margin-bottom: 14px;
}
.section-head p {
    color: var(--ink-soft);
    font-size: 1.03rem;
}
.section-head.center {
    margin-left: auto;
    margin-right: auto;
    text-align: center;
}

/* ----- SERVICES GRID ----- */
.services-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}
.service-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    padding: 32px 28px;
    transition: transform 0.3s cubic-bezier(.2,.8,.2,1), box-shadow 0.3s ease, border-color 0.3s ease;
}
.service-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-lift);
    border-color: var(--accent);
}
.service-num {
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.8rem;
    color: var(--accent-2);
    margin-bottom: 18px;
    display: block;
}
.service-card h3 {
    font-size: 1.2rem;
    margin-bottom: 10px;
}
.service-card p {
    color: var(--ink-soft);
    font-size: 0.92rem;
    margin-bottom: 16px;
}
.service-card ul {
    list-style: none;
    font-size: 0.85rem;
    color: var(--muted);
}
.service-card ul li {
    padding: 4px 0;
    display: flex;
    align-items: center;
    gap: 8px;
}
.service-card ul li::before {
    content: '';
    width: 5px; height: 5px;
    background: var(--accent);
    border-radius: 50%;
    flex-shrink: 0;
}

/* ----- PROCESS (real sequence, numbered) ----- */
.process-row {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: 18px;
    position: relative;
}
.process-step {
    position: relative;
    padding-top: 28px;
}
.process-step::before {
    content: attr(data-num);
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.85rem;
    color: var(--accent);
    display: block;
    margin-bottom: 12px;
}
.process-step h4 {
    font-size: 1rem;
    margin-bottom: 8px;
}
.process-step p {
    font-size: 0.85rem;
    color: var(--muted);
}
.process-line {
    position: absolute;
    top: 8px;
    left: 5%;
    right: 5%;
    height: 1px;
    background: var(--border-strong);
    z-index: 0;
}

/* ----- PORTFOLIO ----- */
.portfolio-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
}
.portfolio-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    overflow: hidden;
    transition: transform 0.3s cubic-bezier(.2,.8,.2,1), box-shadow 0.3s ease;
}
.portfolio-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-lift);
}
.portfolio-media {
    height: 220px;
    background: linear-gradient(135deg, var(--accent) 0%, var(--accent-2) 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
}
.portfolio-media .mock-browser {
    width: 84%;
    background: #fff;
    border-radius: 8px;
    box-shadow: 0 20px 40px rgba(0,0,0,0.25);
    overflow: hidden;
}
.portfolio-media .mock-bar {
    background: #f0f0ee;
    padding: 7px 10px;
    display: flex;
    gap: 5px;
}
.portfolio-media .mock-bar span {
    width: 7px; height: 7px; border-radius: 50%; background: #d5d5d0;
}
.portfolio-media .mock-content {
    padding: 20px;
    font-family: 'Space Grotesk', sans-serif;
    font-size: 0.75rem;
    color: #14161F;
}
.portfolio-body { padding: 26px 28px; }
.portfolio-tag {
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.72rem;
    color: var(--accent);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}
.portfolio-body h3 {
    font-size: 1.25rem;
    margin: 8px 0 10px;
}
.portfolio-body p {
    color: var(--ink-soft);
    font-size: 0.92rem;
    margin-bottom: 16px;
}
.portfolio-stack {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-bottom: 18px;
}
.portfolio-stack span {
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.72rem;
    background: var(--bg);
    border: 1px solid var(--border);
    padding: 4px 10px;
    border-radius: 999px;
    color: var(--ink-soft);
}
.portfolio-link {
    font-weight: 600;
    font-size: 0.88rem;
    color: var(--ink);
    display: inline-flex;
    align-items: center;
    gap: 6px;
}
.portfolio-link:hover { color: var(--accent); }

/* ----- BLOG ----- */
.blog-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}
.blog-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    overflow: hidden;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}
.blog-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-soft);
}
.blog-media {
    height: 150px;
    background: var(--bg-ink);
    display: flex;
    align-items: center;
    justify-content: center;
}
.blog-media .mono {
    color: var(--accent-2);
    font-size: 0.85rem;
    opacity: 0.85;
}
.blog-body { padding: 22px 24px; }
.blog-meta {
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.72rem;
    color: var(--muted);
    margin-bottom: 10px;
}
.blog-body h3 {
    font-size: 1.08rem;
    margin-bottom: 10px;
    line-height: 1.35;
}
.blog-body p {
    color: var(--ink-soft);
    font-size: 0.88rem;
}
.blog-read {
    margin-top: 14px;
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--accent);
}

/* ----- ARTICLE (single blog post) ----- */
.article-wrap {
    max-width: 760px;
    margin: 0 auto;
}
.article-wrap h1 {
    font-size: clamp(1.9rem, 3.5vw, 2.6rem);
    margin-bottom: 18px;
}
.article-meta {
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.82rem;
    color: var(--muted);
    margin-bottom: 36px;
    padding-bottom: 24px;
    border-bottom: 1px solid var(--border);
}
.article-body h2 {
    font-size: 1.4rem;
    margin: 40px 0 16px;
}
.article-body h3 {
    font-size: 1.15rem;
    margin: 28px 0 12px;
}
.article-body p {
    color: var(--ink-soft);
    margin-bottom: 18px;
    font-size: 1.02rem;
}
.article-body ul, .article-body ol {
    color: var(--ink-soft);
    margin: 0 0 18px 22px;
}
.article-body li { margin-bottom: 8px; }
.article-body strong { color: var(--ink); }
.article-cta {
    margin-top: 48px;
    padding: 32px;
    background: var(--bg-ink);
    border-radius: var(--radius-lg);
    text-align: center;
}
.article-cta h3 { color: #fff; margin-bottom: 10px; }
.article-cta p { color: #9a9fb0; margin-bottom: 20px; }

/* ----- STATS BAND ----- */
.stats-band {
    background: var(--bg-ink);
    padding: 56px 0;
}
.stats-band-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
    text-align: center;
}
.stats-band .stat h3 {
    font-size: 2.2rem;
    color: #fff;
    margin-bottom: 6px;
}
.stats-band .stat p {
    color: #8a8fa3;
    font-size: 0.85rem;
    font-family: 'JetBrains Mono', monospace;
}

/* ----- TESTIMONIAL / QUOTE ----- */
.quote-block {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-left: 3px solid var(--accent);
    border-radius: var(--radius-md);
    padding: 32px 34px;
}
.quote-block p {
    font-size: 1.1rem;
    color: var(--ink);
    font-family: 'Space Grotesk', sans-serif;
    font-weight: 500;
    margin-bottom: 14px;
}
.quote-block .who {
    font-size: 0.85rem;
    color: var(--muted);
    font-family: 'JetBrains Mono', monospace;
}

/* ----- ABOUT PAGE ----- */
.about-hero {
    padding: 80px 0 50px;
}
.about-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: start;
}
.about-values {
    display: grid;
    gap: 22px;
    margin-top: 20px;
}
.value-item {
    display: flex;
    gap: 16px;
}
.value-num {
    font-family: 'JetBrains Mono', monospace;
    color: var(--accent-2);
    font-size: 0.85rem;
    flex-shrink: 0;
    padding-top: 3px;
}
.value-item h4 { font-size: 1rem; margin-bottom: 6px; }
.value-item p { font-size: 0.9rem; color: var(--ink-soft); }

/* ----- CONTACT ----- */
.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 50px;
}
.contact-form-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 36px;
}
.form-group { margin-bottom: 18px; }
.form-group label {
    display: block;
    font-size: 0.85rem;
    font-weight: 600;
    margin-bottom: 7px;
    color: var(--ink);
}
.form-group input, .form-group textarea, .form-group select {
    width: 100%;
    padding: 12px 14px;
    border: 1.5px solid var(--border-strong);
    border-radius: var(--radius-sm);
    font-family: 'Inter', sans-serif;
    font-size: 0.95rem;
    background: var(--bg);
    transition: border-color 0.2s ease;
}
.form-group input:focus, .form-group textarea:focus, .form-group select:focus {
    outline: none;
    border-color: var(--accent);
}
.contact-info-list {
    display: grid;
    gap: 22px;
    margin-top: 24px;
}
.contact-info-item {
    display: flex;
    gap: 16px;
    align-items: flex-start;
}
.contact-info-icon {
    width: 42px; height: 42px;
    border-radius: 10px;
    background: var(--bg-card);
    border: 1px solid var(--border);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--accent);
    flex-shrink: 0;
}
.contact-info-item h4 { font-size: 0.95rem; margin-bottom: 4px; }
.contact-info-item p { font-size: 0.9rem; color: var(--ink-soft); }

/* ----- CTA BAND ----- */
.cta-band {
    background: linear-gradient(120deg, var(--bg-ink) 0%, #1B1E2E 100%);
    border-radius: var(--radius-lg);
    padding: 64px 50px;
    text-align: center;
    position: relative;
    overflow: hidden;
}
.cta-band::before {
    content: '';
    position: absolute;
    top: -50%; right: -10%;
    width: 400px; height: 400px;
    background: radial-gradient(circle, rgba(59,91,253,0.25) 0%, transparent 70%);
}
.cta-band h2 { color: #fff; margin-bottom: 14px; position: relative; }
.cta-band p { color: #9a9fb0; margin-bottom: 28px; position: relative; max-width: 480px; margin-left: auto; margin-right: auto; }
.cta-band .hero-actions { justify-content: center; position: relative; }

/* ----- FOOTER ----- */
.footer {
    background: var(--bg-ink);
    color: #9a9fb0;
    padding: 60px 0 30px;
}
.footer-grid {
    display: grid;
    grid-template-columns: 1.4fr 1fr 1fr 1fr;
    gap: 40px;
    padding-bottom: 40px;
    border-bottom: 1px solid rgba(255,255,255,0.08);
}
.footer-brand .logo-mark { color: #fff; }
.footer-brand p {
    margin-top: 14px;
    font-size: 0.88rem;
    max-width: 260px;
    color: #6f7488;
}
.footer-col h4 {
    color: #fff;
    font-size: 0.85rem;
    font-family: 'JetBrains Mono', monospace;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    margin-bottom: 16px;
}
.footer-col a {
    display: block;
    font-size: 0.88rem;
    color: #9a9fb0;
    margin-bottom: 11px;
    transition: color 0.2s ease;
}
.footer-col a:hover { color: var(--accent-2); }
.footer-bottom {
    padding-top: 24px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 0.82rem;
    color: #6f7488;
    flex-wrap: wrap;
    gap: 10px;
}

/* ----- BREADCRUMB (inner pages) ----- */
.page-header {
    padding: 60px 0 40px;
}
.breadcrumb {
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.78rem;
    color: var(--muted);
    margin-bottom: 18px;
}
.breadcrumb a { color: var(--accent); }
.page-header h1 {
    font-size: clamp(2rem, 3.6vw, 2.8rem);
    margin-bottom: 14px;
}
.page-header p {
    color: var(--ink-soft);
    font-size: 1.05rem;
    max-width: 560px;
}

.service-detail-card {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 40px;
    padding: 40px;
}
.service-detail-card h3 { font-size: 1.5rem; margin: 10px 0 12px; }
.service-detail-card ul { font-size: 0.92rem; display: grid; gap: 10px; align-content: center; list-style: none; }
.service-detail-card ul li { padding-left: 16px; position: relative; color: var(--ink-soft); }
.service-detail-card ul li::before { content: ''; position: absolute; left: 0; top: 8px; width: 5px; height: 5px; background: var(--accent); border-radius: 50%; }

@media (max-width: 720px) {
    .service-detail-card { grid-template-columns: 1fr; padding: 28px; }
}
.reveal {
    opacity: 0;
    transform: translateY(24px);
    transition: opacity 0.7s cubic-bezier(.2,.8,.2,1), transform 0.7s cubic-bezier(.2,.8,.2,1);
}
.reveal.in-view {
    opacity: 1;
    transform: translateY(0);
}

/* ================================================================
   RESPONSIVE
   ================================================================ */
@media (max-width: 980px) {
    .hero-grid, .about-grid, .contact-grid { grid-template-columns: 1fr; }
    .services-grid { grid-template-columns: repeat(2, 1fr); }
    .portfolio-grid { grid-template-columns: 1fr; }
    .blog-grid { grid-template-columns: repeat(2, 1fr); }
    .process-row { grid-template-columns: repeat(3, 1fr); row-gap: 30px; }
    .process-line { display: none; }
    .footer-grid { grid-template-columns: 1fr 1fr; }
    .stats-band-grid { grid-template-columns: repeat(2, 1fr); gap: 30px; }
}

@media (max-width: 720px) {
    .nav-links { display: none; }
    .menu-toggle { display: flex; }
    .container { padding: 0 20px; }
    .services-grid { grid-template-columns: 1fr; }
    .blog-grid { grid-template-columns: 1fr; }
    .process-row { grid-template-columns: 1fr 1fr; }
    .footer-grid { grid-template-columns: 1fr 1fr; row-gap: 32px; column-gap: 24px; }
    .footer-brand { grid-column: 1 / -1; }
    .footer-brand p { max-width: 420px; }
    .footer-grid .footer-col:last-child { grid-column: 1 / -1; }
    .hero { padding: 50px 0 40px; }
    .section { padding: 60px 0; }
    .cta-band { padding: 44px 26px; }
    .hero-actions { flex-direction: column; align-items: stretch; }
    .code-panel { transform: none; }
}

.nav-links.mobile-open {
    display: flex;
    position: absolute;
    top: 100%;
    left: 0; right: 0;
    background: var(--bg);
    flex-direction: column;
    padding: 20px 32px 28px;
    border-bottom: 1px solid var(--border);
    gap: 18px;
}

/* ================================================================
   DARK MODE
   ================================================================ */
html[data-theme="dark"] {
    --bg: #0F1117;
    --bg-card: #171A24;
    --bg-ink: #05060A;
    --ink: #F2F2F0;
    --ink-soft: #B7BAC4;
    --muted: #767C8C;
    --border: #262A38;
    --border-strong: #323749;
    --shadow-soft: 0 4px 24px rgba(0, 0, 0, 0.35);
    --shadow-lift: 0 16px 40px rgba(0, 0, 0, 0.5);
}
html[data-theme="dark"] .nav-wrap { background: rgba(15, 17, 23, 0.85); }
html[data-theme="dark"] .footer { background: #05060A; }
html[data-theme="dark"] .mock-content { color: #14161F; }

.theme-toggle {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 38px; height: 38px;
    border-radius: 999px;
    border: 1.5px solid var(--border-strong);
    background: transparent;
    color: var(--ink);
    cursor: pointer;
    transition: border-color 0.2s ease, transform 0.2s ease;
    flex-shrink: 0;
}
.theme-toggle:hover { border-color: var(--accent); transform: translateY(-1px); }
.theme-toggle .icon-sun { display: none; }
html[data-theme="dark"] .theme-toggle .icon-moon { display: none; }
html[data-theme="dark"] .theme-toggle .icon-sun { display: inline; }

/* ================================================================
   WHATSAPP FLOATING BUTTON
   ================================================================ */
.whatsapp-float {
    position: fixed;
    bottom: 24px;
    right: 24px;
    width: 58px; height: 58px;
    background: #25D366;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: var(--shadow-lift);
    z-index: 200;
    transition: transform 0.25s cubic-bezier(.2,.8,.2,1);
}
.whatsapp-float:hover { transform: scale(1.08); }
.whatsapp-float i { font-size: 1.7rem; color: #fff; }
.whatsapp-float .wa-ping {
    position: absolute;
    inset: 0;
    border-radius: 50%;
    background: #25D366;
    animation: wa-pulse 2.2s ease-out infinite;
}
@keyframes wa-pulse {
    0% { opacity: 0.55; transform: scale(1); }
    100% { opacity: 0; transform: scale(1.8); }
}
@media (max-width: 720px) {
    .whatsapp-float { bottom: 18px; right: 18px; width: 52px; height: 52px; }
}

/* ================================================================
   FAQ SECTION
   ================================================================ */
.faq-list { max-width: 760px; margin: 0 auto; display: grid; gap: 14px; }
.faq-item {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    overflow: hidden;
}
.faq-question {
    width: 100%;
    text-align: left;
    padding: 20px 24px;
    background: none;
    border: none;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    font-family: 'Space Grotesk', sans-serif;
    font-size: 1.02rem;
    font-weight: 600;
    color: var(--ink);
}
.faq-question .faq-icon {
    flex-shrink: 0;
    width: 22px; height: 22px;
    position: relative;
}
.faq-question .faq-icon::before, .faq-question .faq-icon::after {
    content: '';
    position: absolute;
    background: var(--accent);
    top: 50%; left: 50%;
    transform: translate(-50%, -50%);
    transition: transform 0.25s ease, opacity 0.25s ease;
}
.faq-question .faq-icon::before { width: 14px; height: 2px; }
.faq-question .faq-icon::after { width: 2px; height: 14px; }
.faq-item.open .faq-icon::after { transform: translate(-50%, -50%) rotate(90deg); opacity: 0; }
.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease;
}
.faq-answer p {
    padding: 0 24px 20px;
    color: var(--ink-soft);
    font-size: 0.95rem;
}
.faq-item.open .faq-answer { max-height: 240px; }

/* ================================================================
   TECH STACK
   ================================================================ */
.stack-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 16px;
}
.stack-chip {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    padding: 18px 16px;
    text-align: center;
    transition: transform 0.25s ease, border-color 0.25s ease;
}
.stack-chip:hover { transform: translateY(-4px); border-color: var(--accent); }
.stack-chip .stack-icon { font-size: 1.4rem; color: var(--accent); margin-bottom: 8px; }
.stack-chip span { display: block; font-family: 'JetBrains Mono', monospace; font-size: 0.78rem; color: var(--ink-soft); }
@media (max-width: 720px) {
    .stack-grid { grid-template-columns: repeat(2, 1fr); }
}

/* ================================================================
   CASE STUDY DOWNLOAD LINK
   ================================================================ */
.case-study-dl {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    margin-left: 14px;
    font-size: 0.88rem;
    font-weight: 600;
    color: var(--ink-soft);
    transition: color 0.2s ease;
}
.case-study-dl:hover { color: var(--accent); }