/* ============================================================
   Lassatec – style.css
   WL variables injected via header.php <style> block
   ============================================================ */

/* Reset */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
img, svg { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
ul { list-style: none; }
button { cursor: pointer; border: none; background: none; font: inherit; }

/* Base */
body {
    background-color: var(--bg);
    color: var(--text);
    font-family: 'JetBrains Mono', monospace;
    font-size: 15px;
    line-height: 1.7;
    -webkit-font-smoothing: antialiased;
    overflow-x: hidden;
}

h1, h2, h3, h4, .display {
    font-family: 'Inter', sans-serif;
    line-height: 1.1;
    letter-spacing: -0.02em;
}

/* ---- LAYOUT ---- */
.container {
    max-width: 1140px;
    margin: 0 auto;
    padding: 0 28px;
}

section { padding: 96px 0; }

/* ---- NAV ---- */
.site-header {
    position: fixed;
    top: 0; left: 0; right: 0;
    z-index: 100;
    background: transparent;
    transition: background 0.3s, border-color 0.3s;
    border-bottom: 1px solid transparent;
}

.site-header.scrolled {
    background: rgba(8, 10, 14, 0.92);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom-color: rgba(var(--accent-rgb), 0.12);
}

.nav-inner {
    max-width: 1140px;
    margin: 0 auto;
    padding: 0 28px;
    height: 68px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 32px;
}

.nav-logo {
    display: flex;
    align-items: center;
    gap: 10px;
    flex-shrink: 0;
}

.nav-logo .site-logo-svg {
    width: 32px;
    height: 32px;
    transition: opacity 0.2s;
}

.nav-logo:hover .site-logo-svg { opacity: 0.85; }

.nav-logo-text {
    font-family: 'Inter', sans-serif;
    font-weight: 700;
    font-size: 18px;
    letter-spacing: -0.01em;
    color: var(--text);
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 8px;
}

.nav-link {
    font-family: 'JetBrains Mono', monospace;
    font-size: 13px;
    letter-spacing: 0.04em;
    color: var(--text-muted);
    padding: 6px 14px;
    border-radius: 4px;
    transition: color 0.2s;
}

.nav-link:hover,
.nav-link.active {
    color: var(--accent);
}

.nav-lang-toggle {
    font-family: 'JetBrains Mono', monospace;
    font-size: 11px;
    letter-spacing: 0.1em;
    color: var(--text-muted);
    border: 1px solid rgba(var(--accent-rgb), 0.3);
    border-radius: 4px;
    padding: 4px 10px;
    margin-left: 8px;
    transition: color 0.2s, border-color 0.2s;
}

.nav-lang-toggle:hover {
    color: var(--accent);
    border-color: var(--accent);
}

.nav-burger {
    display: none;
    flex-direction: column;
    gap: 5px;
    padding: 8px;
    z-index: 110;
}

.nav-burger span {
    display: block;
    width: 22px;
    height: 1.5px;
    background: var(--text);
    transition: transform 0.3s, opacity 0.3s;
}

.nav-burger.open span:nth-child(1) { transform: translateY(6.5px) rotate(45deg); }
.nav-burger.open span:nth-child(2) { opacity: 0; }
.nav-burger.open span:nth-child(3) { transform: translateY(-6.5px) rotate(-45deg); }

.nav-overlay {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(0,0,0,0.6);
    z-index: 98;
}

/* ---- HERO ---- */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: flex-start;
    position: relative;
    overflow: hidden;
    padding: 180px 0 80px;
}

.hero > .container {
    width: 100%;
}

.hero-grid-bg {
    position: absolute;
    inset: 0;
    background-image:
        linear-gradient(rgba(var(--accent-rgb), 0.04) 1px, transparent 1px),
        linear-gradient(90deg, rgba(var(--accent-rgb), 0.04) 1px, transparent 1px);
    background-size: 60px 60px;
    mask-image: radial-gradient(ellipse 80% 80% at 50% 50%, black 30%, transparent 100%);
    -webkit-mask-image: radial-gradient(ellipse 80% 80% at 50% 50%, black 30%, transparent 100%);
    pointer-events: none;
}

.hero-glow {
    position: absolute;
    top: 20%;
    left: 50%;
    transform: translateX(-50%);
    width: 600px;
    height: 400px;
    background: radial-gradient(ellipse, rgba(var(--accent-rgb), 0.08) 0%, transparent 70%);
    pointer-events: none;
}

.hero-inner {
    position: relative;
    z-index: 1;
    max-width: 800px;
    margin-left: 0;
    margin-right: auto;
}

.hero-label {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-size: 11px;
    letter-spacing: 0.12em;
    color: var(--accent);
    margin-bottom: 28px;
    opacity: 0;
    animation: fadeUp 0.6s 0.1s forwards;
}

.hero-label::before {
    content: '';
    display: block;
    width: 20px;
    height: 1px;
    background: var(--accent);
}

.hero-title {
    font-size: clamp(44px, 7vw, 88px);
    font-weight: 800;
    color: var(--text);
    margin-bottom: 24px;
    opacity: 0;
    animation: fadeUp 0.6s 0.2s forwards;
}

.hero-title .accent { color: var(--accent); }

.hero-desc {
    font-size: 16px;
    color: var(--text-muted);
    max-width: 540px;
    margin-bottom: 44px;
    opacity: 0;
    animation: fadeUp 0.6s 0.35s forwards;
}

.hero-cta {
    display: flex;
    flex-wrap: wrap;
    gap: 16px;
    opacity: 0;
    animation: fadeUp 0.6s 0.48s forwards;
}

/* ---- BUTTONS ---- */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-family: 'JetBrains Mono', monospace;
    font-size: 13px;
    letter-spacing: 0.04em;
    padding: 13px 26px;
    border-radius: 4px;
    border: 1px solid transparent;
    transition: background 0.2s, color 0.2s, border-color 0.2s, transform 0.15s;
    white-space: nowrap;
}

.btn:hover { transform: translateY(-1px); }
.btn:active { transform: translateY(0); }

.btn-primary {
    background: var(--accent);
    color: #080a0e;
    font-weight: 500;
}

.btn-primary:hover {
    background: #00ffb3;
}

.btn-outline {
    border-color: rgba(var(--accent-rgb), 0.4);
    color: var(--text-muted);
}

.btn-outline:hover {
    border-color: var(--accent);
    color: var(--accent);
}

/* ---- SECTION HEADER ---- */
.section-label {
    font-size: 11px;
    letter-spacing: 0.12em;
    color: var(--accent);
    margin-bottom: 16px;
    display: flex;
    align-items: center;
    gap: 8px;
}

.section-label::before {
    content: '';
    display: block;
    width: 16px;
    height: 1px;
    background: var(--accent);
}

.section-title {
    font-size: clamp(32px, 4vw, 52px);
    font-weight: 700;
    margin-bottom: 20px;
}

.section-desc {
    font-size: 15px;
    color: var(--text-muted);
    max-width: 560px;
    line-height: 1.8;
}

/* ---- SERVICES GRID ---- */
.services-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 16px;
    background: transparent;
    border: none;
    border-radius: 0;
    overflow: visible;
    margin-top: 64px;
}

.service-card {
    background: var(--bg-2);
    padding: 40px 36px;
    position: relative;
    transition: background 0.25s;
}

.service-card::before {
    content: '';
    position: absolute;
    top: 0; left: 0; right: 0;
    height: 2px;
    background: var(--accent);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform 0.3s;
}

.service-card:hover { background: var(--bg-3); }
.service-card:hover::before { transform: scaleX(1); }

.service-icon {
    width: 44px;
    height: 44px;
    margin-bottom: 24px;
    color: var(--accent);
}

.service-num {
    font-size: 11px;
    letter-spacing: 0.1em;
    color: rgba(var(--accent-rgb), 0.4);
    margin-bottom: 12px;
}

.service-card h3 {
    font-size: 20px;
    font-weight: 600;
    margin-bottom: 12px;
}

.service-card p {
    font-size: 14px;
    color: var(--text-muted);
    line-height: 1.8;
}

/* ---- STACK / TECH ---- */
.stack-section { background: var(--bg-2); }

.stack-grid {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-top: 48px;
}

.stack-tag {
    font-size: 12px;
    letter-spacing: 0.06em;
    color: var(--text-muted);
    border: 1px solid rgba(var(--accent-rgb), 0.2);
    border-radius: 3px;
    padding: 6px 14px;
    transition: color 0.2s, border-color 0.2s;
}

.stack-tag:hover {
    color: var(--accent);
    border-color: rgba(var(--accent-rgb), 0.5);
}

/* ---- PROJECTS GRID ---- */
.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 16px;
    margin-top: 56px;
}

.project-card {
    display: flex;
    flex-direction: column;
    background: var(--bg-2);
    border: 1px solid rgba(var(--accent-rgb), 0.1);
    border-radius: 6px;
    padding: 32px 28px;
    transition: border-color 0.25s, background 0.25s, transform 0.2s;
    cursor: pointer;
}

.project-card:hover {
    border-color: rgba(var(--accent-rgb), 0.35);
    background: var(--bg-3);
    transform: translateY(-2px);
}

.project-card-top {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 20px;
}

.project-tag {
    font-size: 10px;
    letter-spacing: 0.1em;
    color: var(--accent);
    border: 1px solid rgba(var(--accent-rgb), 0.3);
    border-radius: 3px;
    padding: 3px 9px;
}

.project-arrow {
    color: var(--text-muted);
    transition: color 0.2s, transform 0.2s;
}

.project-card:hover .project-arrow {
    color: var(--accent);
    transform: translate(2px, -2px);
}

.project-name {
    font-size: 22px;
    font-weight: 700;
    margin-bottom: 12px;
}

.project-desc {
    font-size: 13px;
    color: var(--text-muted);
    line-height: 1.8;
    flex: 1;
    margin-bottom: 20px;
}

.project-url {
    font-size: 11px;
    letter-spacing: 0.04em;
    color: rgba(var(--accent-rgb), 0.4);
    font-family: 'JetBrains Mono', monospace;
}

/* ---- CTA BAND ---- */
.cta-band {
    background: var(--bg-3);
    border-top: 1px solid rgba(var(--accent-rgb), 0.1);
    border-bottom: 1px solid rgba(var(--accent-rgb), 0.1);
    padding: 80px 0;
    text-align: center;
}

.cta-band h2 {
    font-size: clamp(28px, 4vw, 48px);
    margin-bottom: 16px;
}

.cta-band p {
    color: var(--text-muted);
    max-width: 480px;
    margin: 0 auto 36px;
}

/* ---- CONTACT PAGE ---- */
.contact-layout {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 80px;
    align-items: start;
    margin-top: 64px;
}

.contact-info-item {
    display: flex;
    align-items: flex-start;
    gap: 16px;
    margin-bottom: 32px;
}

.contact-info-icon {
    width: 40px;
    height: 40px;
    border: 1px solid rgba(var(--accent-rgb), 0.25);
    border-radius: 4px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--accent);
    flex-shrink: 0;
}

.contact-info-label {
    font-size: 11px;
    letter-spacing: 0.1em;
    color: var(--accent);
    margin-bottom: 4px;
}

.contact-info-value {
    font-size: 14px;
    color: var(--text-muted);
}

.contact-info-value a {
    color: var(--text-muted);
    transition: color 0.2s;
}

.contact-info-value a:hover { color: var(--accent); }

/* ---- FORM ---- */
.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    font-size: 11px;
    letter-spacing: 0.08em;
    color: var(--text-muted);
    margin-bottom: 8px;
}

.form-group input,
.form-group textarea,
.form-group select {
    width: 100%;
    background: var(--bg-2);
    border: 1px solid rgba(var(--accent-rgb), 0.18);
    border-radius: 4px;
    color: var(--text);
    font-family: 'JetBrains Mono', monospace;
    font-size: 14px;
    padding: 12px 16px;
    outline: none;
    transition: border-color 0.2s;
    -webkit-appearance: none;
    appearance: none;
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
    border-color: var(--accent);
}

.form-group textarea {
    min-height: 140px;
    resize: vertical;
}

.form-msg {
    display: none;
    font-size: 13px;
    padding: 12px 16px;
    border-radius: 4px;
    margin-top: 16px;
}

.form-msg.success {
    background: rgba(var(--accent-rgb), 0.1);
    border: 1px solid rgba(var(--accent-rgb), 0.3);
    color: var(--accent);
}

.form-msg.error {
    background: rgba(220, 60, 60, 0.1);
    border: 1px solid rgba(220, 60, 60, 0.3);
    color: #e07070;
}

/* ---- SERVICES PAGE ---- */
.service-detail {
    padding: 60px 0;
    border-bottom: 1px solid rgba(var(--accent-rgb), 0.08);
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: 60px;
    align-items: start;
}

.service-detail:last-child { border-bottom: none; }

.service-detail-num {
    font-size: 64px;
    font-family: 'Inter', sans-serif;
    font-weight: 800;
    color: rgba(var(--accent-rgb), 0.12);
    line-height: 1;
}

.service-detail h3 {
    font-size: 26px;
    font-weight: 700;
    margin-bottom: 16px;
}

.service-detail p {
    color: var(--text-muted);
    font-size: 15px;
    line-height: 1.85;
    margin-bottom: 20px;
}

.service-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.service-tag {
    font-size: 11px;
    letter-spacing: 0.06em;
    border: 1px solid rgba(var(--accent-rgb), 0.2);
    border-radius: 3px;
    padding: 3px 10px;
    color: rgba(var(--accent-rgb), 0.7);
}

/* ---- FOOTER ---- */
.site-footer {
    background: var(--bg-2);
    border-top: 1px solid rgba(var(--accent-rgb), 0.1);
    padding-top: 64px;
}

.footer-inner {
    max-width: 1140px;
    margin: 0 auto;
    padding: 0 28px 48px;
    display: grid;
    grid-template-columns: 1.5fr 1fr 1.5fr;
    gap: 48px;
    align-items: start;
}

.footer-logo-link {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 16px;
}

.footer-logo-link .site-logo-svg { width: 28px; height: 28px; }

.footer-logo-link span {
    font-family: 'Inter', sans-serif;
    font-weight: 700;
    font-size: 16px;
}

.footer-tagline {
    font-size: 13px;
    color: var(--text-muted);
    line-height: 1.7;
    max-width: 280px;
}

.footer-nav ul { display: flex; flex-direction: column; gap: 10px; }

.footer-nav a {
    font-size: 13px;
    color: var(--text-muted);
    transition: color 0.2s;
}

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

.footer-contact { display: flex; flex-direction: column; gap: 12px; }

.footer-contact-item {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 13px;
    color: var(--text-muted);
    transition: color 0.2s;
}

.footer-contact-item:hover { color: var(--accent); }
.footer-city { cursor: default; }
.footer-city:hover { color: var(--text-muted); }

.footer-bottom {
    border-top: 1px solid rgba(var(--accent-rgb), 0.08);
    padding: 20px 28px;
    max-width: 1140px;
    margin: 0 auto;
}

.footer-bottom p {
    font-size: 12px;
    color: rgba(var(--accent-rgb), 0.3);
    letter-spacing: 0.04em;
}

/* ---- PAGE HERO (inner pages) ---- */
.page-hero {
    padding: 140px 0 72px;
    border-bottom: 1px solid rgba(var(--accent-rgb), 0.08);
    position: relative;
    overflow: hidden;
}

.page-hero-bg {
    position: absolute;
    inset: 0;
    background-image:
        linear-gradient(rgba(var(--accent-rgb), 0.03) 1px, transparent 1px),
        linear-gradient(90deg, rgba(var(--accent-rgb), 0.03) 1px, transparent 1px);
    background-size: 60px 60px;
    pointer-events: none;
}

.page-hero .hero-label { opacity: 1; animation: none; }
.page-hero .hero-title { opacity: 1; animation: none; }
.page-hero .hero-desc  { opacity: 1; animation: none; }

/* ---- ANIMATIONS ---- */
@keyframes fadeUp {
    from { opacity: 0; transform: translateY(20px); }
    to   { opacity: 1; transform: translateY(0); }
}

.reveal {
    opacity: 0;
    transform: translateY(24px);
    transition: opacity 0.55s, transform 0.55s;
}

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

/* ---- RESPONSIVE ---- */
@media (max-width: 900px) {
    .contact-layout { grid-template-columns: 1fr; gap: 48px; }
    .service-detail { grid-template-columns: 1fr; gap: 16px; }
    .service-detail-num { font-size: 40px; }
    .footer-inner { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 700px) {
    section { padding: 72px 0; }

    .nav-links {
        display: none;
        flex-direction: column;
        align-items: flex-start;
        position: fixed;
        top: 0; right: 0;
        width: min(320px, 85vw);
        height: 100vh;
        background: var(--bg-2);
        border-left: 1px solid rgba(var(--accent-rgb), 0.15);
        padding: 100px 32px 40px;
        gap: 4px;
        z-index: 99;
        transition: transform 0.3s;
        transform: translateX(100%);
    }

    .nav-links.open {
        display: flex;
        transform: translateX(0);
    }

    .nav-overlay.open { display: block; }

    .nav-burger { display: flex; }

    .nav-link {
        font-size: 15px;
        padding: 10px 0;
    }

    .nav-lang-toggle { margin-left: 0; margin-top: 16px; }

    .footer-inner { grid-template-columns: 1fr; gap: 36px; }

    .hero-title { letter-spacing: -0.03em; }
}

/* ---- THEME TOGGLE ---- */
.nav-theme-toggle {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 32px;
    height: 32px;
    color: var(--text-muted);
    border: 1px solid rgba(var(--accent-rgb), 0.3);
    border-radius: 4px;
    margin-left: 4px;
    transition: color 0.2s, border-color 0.2s;
    flex-shrink: 0;
}
.nav-theme-toggle:hover {
    color: var(--accent);
    border-color: var(--accent);
}

/* ---- LIGHT MODE ---- */
html[data-theme="light"] {
    --bg:         #f5f7fa;
    --bg-2:       #ffffff;
    --bg-3:       #eef0f4;
    --text:       #1a1e28;
    --text-muted: #6b7280;
}
html[data-theme="light"] body {
    background-color: var(--bg);
    color: var(--text);
}
html[data-theme="light"] .site-header {
    background: rgba(245, 247, 250, 0.92);
    border-bottom-color: rgba(0,0,0,0.08);
}
html[data-theme="light"] .site-header.scrolled {
    background: rgba(245, 247, 250, 0.98);
    box-shadow: 0 1px 16px rgba(0,0,0,0.06);
}
html[data-theme="light"] .hero {
    background: #f5f7fa;
}
html[data-theme="light"] .hero::before {
    opacity: 0.4;
}
html[data-theme="light"] .section-alt {
    background: #eef0f4;
}
html[data-theme="light"] .card,
html[data-theme="light"] .project-card,
html[data-theme="light"] .service-card {
    background: #ffffff;
    border-color: rgba(0,0,0,0.08);
}
html[data-theme="light"] .footer {
    background: #1a1e28;
    color: #f5f7fa;
}
html[data-theme="light"] input,
html[data-theme="light"] textarea,
html[data-theme="light"] select {
    background: #ffffff;
    border-color: #d1d5db;
    color: #1a1e28;
}
html[data-theme="light"] input::placeholder,
html[data-theme="light"] textarea::placeholder {
    color: #9ca3af;
}
html[data-theme="light"] .nav-burger span {
    background: #1a1e28;
}

/* ---- PROJECT COVER IMAGE ---- */
.project-cover {
    margin: -32px -28px 24px;
    border-radius: 5px 5px 0 0;
    overflow: hidden;
    height: 180px;
}
.project-cover img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
    transition: transform 0.4s;
}
.project-card:hover .project-cover img {
    transform: scale(1.03);
}

/* ---- PROJECT TECH STACK TAGS ---- */
.project-stack {
    display: flex;
    flex-wrap: wrap;
    gap: 4px;
    margin-bottom: 16px;
}
.project-stack-tag {
    font-size: 10px;
    letter-spacing: 0.05em;
    color: var(--text-muted);
    background: rgba(var(--accent-rgb), 0.06);
    border: 1px solid rgba(var(--accent-rgb), 0.15);
    border-radius: 3px;
    padding: 2px 7px;
}
html[data-theme="light"] .project-stack-tag {
    background: rgba(var(--accent-rgb), 0.08);
    border-color: rgba(var(--accent-rgb), 0.2);
}