/* ─── Variables ─────────────────────────────────────── */
:root {
    --bg:           #070b14;
    --bg2:          #0c1422;
    --bg3:          #111827;
    --card:         rgba(13, 22, 45, 0.85);
    --border:       rgba(255, 255, 255, 0.07);
    --border-h:     rgba(255, 255, 255, 0.15);
    --accent:       #5b7cf5;
    --accent-d:     #3a5ce0;
    --accent-glow:  rgba(91, 124, 245, 0.35);
    --accent-soft:  rgba(91, 124, 245, 0.12);
    --cyan:         #22d3ee;
    --gold:         #e8a840;
    --text:         #e8edf8;
    --text2:        #7a8caa;
    --text3:        #3e4e68;
    --white:        #ffffff;
    --r:            14px;
    --rl:           22px;
    --shadow:       0 8px 40px rgba(0,0,0,0.45);
    --t:            all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* ─── Reset ─────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
    font-family: 'Inter', sans-serif;
    background: var(--bg);
    color: var(--text);
    line-height: 1.65;
    overflow-x: hidden;
}
img { max-width: 100%; height: auto; display: block; }
a { color: inherit; text-decoration: none; }
ul { list-style: none; }
button { cursor: pointer; border: none; background: none; font: inherit; }

/* ─── Typography ─────────────────────────────────────── */
h1, h2, h3, h4 { font-family: 'Space Grotesk', sans-serif; line-height: 1.2; font-weight: 700; }
h1 { font-size: clamp(2.4rem, 5.5vw, 4.5rem); letter-spacing: -0.03em; }
h2 { font-size: clamp(1.9rem, 3.5vw, 3rem); letter-spacing: -0.02em; }
h3 { font-size: clamp(1.15rem, 2vw, 1.4rem); }

/* ─── Utilities ─────────────────────────────────────── */
.container { max-width: 1200px; margin: 0 auto; padding: 0 24px; }
.section-label {
    display: inline-block; font-size: 0.78rem; font-weight: 600; letter-spacing: 0.12em;
    text-transform: uppercase; color: var(--accent); margin-bottom: 12px;
}
.section-title { color: var(--white); margin-bottom: 16px; }
.section-sub { color: var(--text2); font-size: 1.05rem; max-width: 560px; }
.section-header { margin-bottom: 60px; }
.section-header.center { text-align: center; }
.section-header.center .section-sub { margin: 0 auto; }
section { padding: 110px 0; }

/* ─── Buttons ────────────────────────────────────────── */
.btn {
    display: inline-flex; align-items: center; gap: 8px;
    padding: 14px 28px; border-radius: 50px; font-size: 0.95rem;
    font-weight: 600; transition: var(--t); white-space: nowrap;
}
.btn-primary {
    background: var(--accent); color: #fff;
    box-shadow: 0 0 28px var(--accent-glow);
}
.btn-primary:hover {
    background: var(--accent-d); transform: translateY(-2px);
    box-shadow: 0 0 40px var(--accent-glow);
}
.btn-ghost {
    background: transparent; color: var(--text);
    border: 1px solid var(--border-h);
}
.btn-ghost:hover { border-color: var(--accent); color: var(--accent); transform: translateY(-2px); }
.btn-sm { padding: 9px 18px; font-size: 0.85rem; }

/* ─── Header / Nav ───────────────────────────────────── */
#header {
    position: fixed; top: 0; left: 0; right: 0; z-index: 1000;
    padding: 20px 0; transition: var(--t);
}
#header.scrolled {
    background: rgba(7, 11, 20, 0.92);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border);
    padding: 12px 0;
    box-shadow: 0 4px 32px rgba(0,0,0,0.3);
}
.nav {
    display: flex; align-items: center; justify-content: space-between;
}
.logo {
    display: flex; align-items: center; gap: 10px;
    font-family: 'Space Grotesk', sans-serif; font-weight: 700;
    font-size: 1.05rem; letter-spacing: -0.01em;
}
.logo-img {
    height: 38px; width: auto;
    filter: brightness(0) invert(1);
}
.logo-text span { color: var(--accent); }
.nav-links {
    display: flex; align-items: center; gap: 36px;
}
.nav-links a {
    font-size: 0.9rem; font-weight: 500; color: var(--text2);
    transition: color 0.2s; position: relative;
}
.nav-links a::after {
    content: ''; position: absolute; bottom: -4px; left: 0; width: 0; height: 2px;
    background: var(--accent); transition: width 0.3s;
}
.nav-links a:hover, .nav-links a.active { color: var(--white); }
.nav-links a:hover::after, .nav-links a.active::after { width: 100%; }
.nav-cta.btn {
    padding: 9px 22px; border-radius: 50px;
    background: var(--accent-soft); color: var(--accent);
    border: 1px solid rgba(91, 124, 245, 0.3);
}
.nav-cta.btn::after { display: none; }
.nav-cta.btn:hover { background: var(--accent); color: #fff; }
.hamburger {
    display: none; flex-direction: column; gap: 5px;
    width: 28px; height: 22px; justify-content: center;
}
.hamburger span {
    display: block; width: 100%; height: 2px; background: var(--text);
    border-radius: 2px; transition: var(--t); transform-origin: center;
}
.hamburger.active span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.hamburger.active span:nth-child(2) { opacity: 0; }
.hamburger.active span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ─── Hero ───────────────────────────────────────────── */
#hero {
    position: relative; min-height: 100vh;
    display: flex; align-items: center; overflow: hidden;
    padding: 120px 0 80px;
}
.hero-bg {
    position: absolute; inset: 0;
    background: radial-gradient(ellipse 80% 60% at 50% 20%, rgba(91,124,245,0.12) 0%, transparent 65%),
                radial-gradient(ellipse 40% 40% at 80% 70%, rgba(34,211,238,0.06) 0%, transparent 60%),
                linear-gradient(180deg, var(--bg) 0%, var(--bg2) 100%);
}
#stars-canvas {
    position: absolute; inset: 0; pointer-events: none;
}
.hero-mountains {
    position: absolute; bottom: -2px; left: 0; width: 100%;
    pointer-events: none; will-change: transform;
}
.hero-content {
    position: relative; z-index: 2; max-width: 820px;
}
.hero-badge {
    display: inline-flex; align-items: center; gap: 8px;
    padding: 7px 16px; border-radius: 50px; margin-bottom: 28px;
    background: rgba(91, 124, 245, 0.1); border: 1px solid rgba(91, 124, 245, 0.25);
    font-size: 0.8rem; font-weight: 500; letter-spacing: 0.06em;
    color: var(--accent); text-transform: uppercase;
    animation: fadeSlideDown 0.8s ease both;
}
.hero-badge::before { content: ''; width: 6px; height: 6px; border-radius: 50%; background: var(--accent); }
.hero-title {
    color: var(--white); margin-bottom: 24px;
    animation: fadeSlideUp 0.9s 0.2s ease both;
}
.hero-title span { color: transparent; background: linear-gradient(90deg, var(--accent), var(--cyan)); -webkit-background-clip: text; background-clip: text; }
.hero-sub {
    font-size: clamp(1rem, 2vw, 1.15rem); color: var(--text2); max-width: 560px;
    margin-bottom: 40px; line-height: 1.75;
    animation: fadeSlideUp 0.9s 0.35s ease both;
}
.hero-ctas {
    display: flex; gap: 16px; flex-wrap: wrap;
    animation: fadeSlideUp 0.9s 0.5s ease both;
}
.scroll-indicator {
    position: absolute; bottom: 40px; left: 50%; transform: translateX(-50%);
    z-index: 2; display: flex; flex-direction: column; align-items: center; gap: 8px;
}
.scroll-dot {
    width: 24px; height: 40px; border: 2px solid var(--border-h); border-radius: 12px;
    display: flex; align-items: flex-start; justify-content: center; padding-top: 6px;
}
.scroll-dot::after {
    content: ''; width: 4px; height: 8px; border-radius: 2px; background: var(--accent);
    animation: scrollBounce 2s ease infinite;
}

/* ─── Reveal animations ──────────────────────────────── */
.reveal {
    opacity: 0; transform: translateY(32px);
    transition: opacity 0.7s ease, transform 0.7s ease;
}
.reveal.visible { opacity: 1; transform: translateY(0); }
.reveal[style*="--delay"] { transition-delay: var(--delay, 0s); }

/* ─── Services ───────────────────────────────────────── */
#services { background: var(--bg2); }
.services-grid {
    display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 28px;
}
.service-card {
    background: var(--card); border: 1px solid var(--border); border-radius: var(--rl);
    padding: 36px; transition: var(--t);
    backdrop-filter: blur(12px); -webkit-backdrop-filter: blur(12px);
}
.service-card:hover {
    transform: translateY(-6px); border-color: rgba(91, 124, 245, 0.4);
    box-shadow: 0 20px 60px rgba(0,0,0,0.4), 0 0 0 1px rgba(91, 124, 245, 0.15);
}
.service-icon {
    width: 54px; height: 54px; border-radius: 14px; margin-bottom: 24px;
    background: var(--accent-soft); border: 1px solid rgba(91, 124, 245, 0.2);
    display: flex; align-items: center; justify-content: center;
}
.service-icon svg { width: 24px; height: 24px; stroke: var(--accent); }
.service-card h3 { color: var(--white); margin-bottom: 12px; }
.service-card p { color: var(--text2); font-size: 0.95rem; margin-bottom: 24px; line-height: 1.7; }
.service-features { display: flex; flex-direction: column; gap: 8px; }
.service-features li {
    font-size: 0.88rem; color: var(--text2); display: flex; align-items: center; gap: 10px;
}
.service-features li::before {
    content: ''; width: 5px; height: 5px; border-radius: 50%;
    background: var(--accent); flex-shrink: 0;
}

/* ─── Process ────────────────────────────────────────── */
#process { background: var(--bg); }
.process-grid {
    display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 0; position: relative;
}
.process-grid::before {
    content: ''; position: absolute; top: 36px; left: 0; right: 0; height: 1px;
    background: linear-gradient(90deg, transparent, var(--border), var(--border), transparent);
    pointer-events: none;
}
.process-step { padding: 0 24px 0 0; position: relative; }
.step-num {
    width: 72px; height: 72px; border-radius: 50%; margin-bottom: 28px;
    background: var(--bg2); border: 2px solid var(--border);
    display: flex; align-items: center; justify-content: center;
    font-family: 'Space Grotesk', sans-serif; font-size: 1.1rem; font-weight: 700;
    color: var(--accent); transition: var(--t); position: relative; z-index: 1;
}
.process-step:hover .step-num {
    background: var(--accent-soft); border-color: var(--accent);
    box-shadow: 0 0 24px var(--accent-glow);
}
.process-step h3 { color: var(--white); margin-bottom: 10px; font-size: 1.05rem; }
.process-step p { color: var(--text2); font-size: 0.9rem; line-height: 1.7; }
.step-body h3 { color: var(--white); margin-bottom: 10px; font-size: 1.05rem; }
.step-body p { color: var(--text2); font-size: 0.9rem; line-height: 1.7; }

/* ─── Portfolio ──────────────────────────────────────── */
#portfolio { background: var(--bg2); }
.portfolio-grid {
    display: grid; grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: 28px;
}
.portfolio-card {
    background: var(--card); border: 1px solid var(--border); border-radius: var(--rl);
    overflow: hidden; transition: var(--t); group: true;
}
.portfolio-card:hover { transform: translateY(-6px); border-color: rgba(91, 124, 245, 0.3); box-shadow: var(--shadow); }
.portfolio-img {
    position: relative; padding-top: 56.25%; overflow: hidden;
    background: linear-gradient(135deg, var(--bg3), var(--bg2));
}
.portfolio-img img {
    position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover;
    transition: transform 0.5s ease;
}
.portfolio-card:hover .portfolio-img img { transform: scale(1.05); }
.portfolio-img-placeholder {
    position: absolute; inset: 0; display: flex; align-items: center; justify-content: center;
}
.portfolio-img-placeholder svg { width: 48px; height: 48px; stroke: var(--text3); }
.portfolio-body { padding: 24px; }
.portfolio-tech {
    font-size: 0.78rem; color: var(--accent); font-weight: 500;
    letter-spacing: 0.05em; text-transform: uppercase; margin-bottom: 10px;
}
.portfolio-body h3 { color: var(--white); margin-bottom: 10px; }
.portfolio-body p { color: var(--text2); font-size: 0.9rem; line-height: 1.65; margin-bottom: 20px; }
.portfolio-link { color: var(--accent); font-size: 0.88rem; font-weight: 600; display: inline-flex; align-items: center; gap: 6px; transition: gap 0.2s; }
.portfolio-link:hover { gap: 10px; }
.portfolio-empty { text-align: center; padding: 80px 20px; color: var(--text2); grid-column: 1/-1; }

/* ─── About ──────────────────────────────────────────── */
#about { background: var(--bg); overflow: hidden; }
.about-grid {
    display: grid; grid-template-columns: 1fr 1fr; gap: 80px; align-items: center;
}
.about-text p { color: var(--text2); font-size: 1rem; line-height: 1.8; margin-bottom: 20px; }
.about-stats { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; margin-top: 48px; }
.stat-card {
    background: var(--card); border: 1px solid var(--border); border-radius: var(--r);
    padding: 24px 20px; text-align: center; transition: var(--t);
}
.stat-card:hover { border-color: rgba(91, 124, 245, 0.3); background: var(--accent-soft); }
.stat-value {
    font-family: 'Space Grotesk', sans-serif; font-size: 2.2rem; font-weight: 700;
    color: var(--accent); line-height: 1; margin-bottom: 6px;
}
.stat-label { font-size: 0.82rem; color: var(--text2); }
.about-visual {
    position: relative; display: flex; align-items: center; justify-content: center;
}
.about-img-wrap {
    position: relative; width: 100%;
    border-radius: var(--rl); overflow: hidden;
    border: 1px solid var(--border);
    aspect-ratio: 4/5;
    background: linear-gradient(135deg, var(--bg2) 0%, var(--bg3) 50%, rgba(91,124,245,0.1) 100%);
    display: flex; align-items: center; justify-content: center;
}
.about-logo-big { width: 160px; opacity: 0.12; filter: brightness(0) invert(1); }
.about-tag {
    position: absolute; padding: 10px 18px; border-radius: 50px;
    backdrop-filter: blur(12px); -webkit-backdrop-filter: blur(12px);
    background: rgba(13, 22, 45, 0.9); border: 1px solid var(--border-h);
    font-size: 0.82rem; font-weight: 600; white-space: nowrap;
}
.about-tag--tl { top: -16px; left: -16px; color: var(--cyan); border-color: rgba(34,211,238,0.3); }
.about-tag--br { bottom: -16px; right: -16px; color: var(--gold); border-color: rgba(232,168,64,0.3); }

/* ─── Contact ────────────────────────────────────────── */
#contact { background: var(--bg2); }
.contact-grid {
    display: grid; grid-template-columns: 1fr 1.3fr; gap: 60px; align-items: start;
}
.contact-info { display: flex; flex-direction: column; gap: 20px; }
.contact-card {
    display: flex; align-items: center; gap: 16px;
    background: var(--card); border: 1px solid var(--border); border-radius: var(--r);
    padding: 20px 22px; transition: var(--t);
}
.contact-card:hover { border-color: rgba(91, 124, 245, 0.3); }
.contact-icon {
    width: 44px; height: 44px; border-radius: 11px; flex-shrink: 0;
    background: var(--accent-soft); border: 1px solid rgba(91, 124, 245, 0.2);
    display: flex; align-items: center; justify-content: center;
}
.contact-icon svg { width: 20px; height: 20px; stroke: var(--accent); }
.contact-card-label { font-size: 0.78rem; color: var(--text2); margin-bottom: 2px; }
.contact-card-value { font-size: 0.95rem; font-weight: 500; color: var(--text); }

/* ─── Form ───────────────────────────────────────────── */
.contact-form-wrap {
    background: var(--card); border: 1px solid var(--border);
    border-radius: var(--rl); padding: 40px; backdrop-filter: blur(12px);
}
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.form-group { display: flex; flex-direction: column; gap: 6px; margin-bottom: 16px; }
.form-group label { font-size: 0.82rem; font-weight: 500; color: var(--text2); }
.form-group input, .form-group textarea, .form-group select {
    background: rgba(255,255,255,0.04); border: 1px solid var(--border);
    border-radius: 10px; padding: 13px 16px; color: var(--text);
    font-size: 0.92rem; font-family: inherit; transition: var(--t); outline: none;
    width: 100%;
}
.form-group input:focus, .form-group textarea:focus, .form-group select:focus {
    border-color: var(--accent); background: rgba(91, 124, 245, 0.06);
    box-shadow: 0 0 0 3px rgba(91, 124, 245, 0.15);
}
.form-group input::placeholder, .form-group textarea::placeholder { color: var(--text3); }
.form-group textarea { resize: vertical; min-height: 130px; }
.btn-submit {
    width: 100%; padding: 15px; border-radius: 50px; font-size: 0.97rem;
    font-weight: 600; background: var(--accent); color: #fff;
    box-shadow: 0 0 28px var(--accent-glow); transition: var(--t);
    display: flex; align-items: center; justify-content: center; gap: 10px;
    margin-top: 8px;
}
.btn-submit:hover:not(:disabled) { background: var(--accent-d); transform: translateY(-2px); }
.btn-submit:disabled { opacity: 0.6; cursor: not-allowed; }
.spinner {
    width: 16px; height: 16px; border: 2px solid rgba(255,255,255,0.3);
    border-top-color: #fff; border-radius: 50%; animation: spin 0.7s linear infinite;
}
.form-msg {
    margin-top: 14px; padding: 12px 16px; border-radius: 9px; font-size: 0.9rem;
    opacity: 0; transform: translateY(6px); transition: var(--t);
}
.form-msg.show { opacity: 1; transform: translateY(0); }
.form-msg--success { background: rgba(34, 197, 94, 0.12); border: 1px solid rgba(34, 197, 94, 0.3); color: #4ade80; }
.form-msg--error   { background: rgba(239, 68, 68, 0.12);  border: 1px solid rgba(239, 68, 68, 0.3);  color: #f87171; }

/* ─── Footer ─────────────────────────────────────────── */
footer {
    background: #050810; border-top: 1px solid var(--border);
    padding: 48px 0 32px;
}
.footer-grid {
    display: grid; grid-template-columns: 1.5fr 1fr 1fr; gap: 48px;
    margin-bottom: 48px;
}
.footer-brand .logo { margin-bottom: 14px; }
.footer-brand p { color: var(--text2); font-size: 0.88rem; line-height: 1.7; max-width: 280px; }
.footer-col h4 { font-size: 0.85rem; font-weight: 600; color: var(--white); margin-bottom: 16px; letter-spacing: 0.05em; text-transform: uppercase; }
.footer-links { display: flex; flex-direction: column; gap: 10px; }
.footer-links a { font-size: 0.88rem; color: var(--text2); transition: color 0.2s; }
.footer-links a:hover { color: var(--accent); }
.footer-bottom {
    border-top: 1px solid var(--border); padding-top: 28px;
    display: flex; align-items: center; justify-content: space-between;
    flex-wrap: wrap; gap: 12px;
}
.footer-bottom p { font-size: 0.82rem; color: var(--text3); }
.footer-bottom a { color: var(--text2); font-size: 0.82rem; }
.footer-bottom a:hover { color: var(--accent); }

/* ─── Keyframes ──────────────────────────────────────── */
@keyframes fadeSlideDown {
    from { opacity: 0; transform: translateY(-16px); }
    to   { opacity: 1; transform: translateY(0); }
}
@keyframes fadeSlideUp {
    from { opacity: 0; transform: translateY(24px); }
    to   { opacity: 1; transform: translateY(0); }
}
@keyframes scrollBounce {
    0%, 100% { transform: translateY(0); opacity: 1; }
    60%       { transform: translateY(14px); opacity: 0.2; }
}
@keyframes spin {
    to { transform: rotate(360deg); }
}
@keyframes pulse {
    0%, 100% { opacity: 1; }
    50%       { opacity: 0.5; }
}

/* ─── Mobile responsive ──────────────────────────────── */
@media (max-width: 900px) {
    .nav-links {
        position: fixed; inset: 0; top: 68px;
        background: rgba(7, 11, 20, 0.97); backdrop-filter: blur(20px);
        flex-direction: column; gap: 0; padding: 20px;
        transform: translateX(100%); transition: transform 0.35s ease;
        height: calc(100vh - 68px); overflow-y: auto;
    }
    .nav-links.open { transform: translateX(0); }
    .nav-links a { display: block; padding: 16px 0; border-bottom: 1px solid var(--border); font-size: 1rem; }
    .nav-links a::after { display: none; }
    .nav-cta.btn { margin-top: 16px; }
    .hamburger { display: flex; }
    body.menu-open { overflow: hidden; }
}
@media (max-width: 800px) {
    section { padding: 80px 0; }
    .about-grid { grid-template-columns: 1fr; gap: 48px; }
    .about-visual { display: none; }
    .about-stats { grid-template-columns: repeat(3, 1fr); gap: 14px; }
    .contact-grid { grid-template-columns: 1fr; gap: 40px; }
    .process-grid { grid-template-columns: 1fr; gap: 36px; }
    .process-grid::before { display: none; }
    .process-step { padding: 0; display: flex; gap: 20px; align-items: flex-start; }
    .step-num { flex-shrink: 0; width: 56px; height: 56px; font-size: 0.95rem; margin-bottom: 0; }
    .footer-grid { grid-template-columns: 1fr; gap: 36px; }
    .form-row { grid-template-columns: 1fr; }
}
@media (max-width: 540px) {
    .about-stats { grid-template-columns: repeat(3, 1fr); }
    .stat-value { font-size: 1.7rem; }
    .hero-ctas { flex-direction: column; }
    .hero-ctas .btn { text-align: center; justify-content: center; }
    .contact-form-wrap { padding: 24px; }
}