/* ── Reset & Base ─────────────────────────────────── */
*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }

:root {
    --navy:       #0c2d3f;
    --deep-teal:  #0e4155;
    --teal:       #1a6b7a;
    --mid-teal:   #3a9aad;
    --light-teal: #6ec4d4;
    --cyan:       #a0dde8;
    --ice:        #d4f0f6;
    --ghost:      #eef7fa;
    --bg:         #f6fafb;
    --text:       #1c2e36;
    --text-mid:   #4a6670;
    --text-light: #7a959f;
    --white:      #ffffff;

    --font-display: 'Newsreader', Georgia, 'Times New Roman', serif;
    --font-body:    system-ui, -apple-system, 'Segoe UI', Helvetica, sans-serif;
    --font-mono:    'SF Mono', 'Cascadia Code', 'Fira Code', monospace;

    --nav-h:  4rem;
    --foot-h: 3.5rem;
}

html {
    font-size: 16px;
    scroll-behavior: smooth;
    -webkit-font-smoothing: antialiased;
}

body {
    font-family: var(--font-body);
    color: var(--text);
    background: var(--bg);
    line-height: 1.65;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

/* ── Sticky Nav ───────────────────────────────────── */
nav {
    position: sticky;
    top: 0;
    z-index: 100;
    height: var(--nav-h);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 clamp(1.5rem, 4vw, 3rem);
    background: rgba(246, 250, 251, 0.82);
    backdrop-filter: blur(14px) saturate(1.6);
    -webkit-backdrop-filter: blur(14px) saturate(1.6);
    border-bottom: 1px solid rgba(14, 65, 85, 0.07);
    transition: box-shadow 0.3s ease;
}

nav.scrolled {
    box-shadow: 0 1px 12px rgba(12, 45, 63, 0.08);
}

.nav-logo {
    height: 1.8rem;
    width: auto;
    display: block;
}

.nav-links {
    display: flex;
    gap: 2rem;
    list-style: none;
}

.nav-links a {
    text-decoration: none;
    font-size: 0.82rem;
    font-weight: 500;
    letter-spacing: 0.06em;
    text-transform: uppercase;
    color: var(--text-mid);
    transition: color 0.2s;
    position: relative;
}

.nav-links a::after {
    content: '';
    position: absolute;
    bottom: -3px;
    left: 0;
    width: 0;
    height: 1.5px;
    background: var(--teal);
    transition: width 0.25s ease;
}

.nav-links a:hover { color: var(--deep-teal); }
.nav-links a:hover::after { width: 100%; }

/* ── Main ──────────────────────────────────────────── */
main {
    flex: 1;
}

section {
    padding: clamp(4rem, 8vw, 7rem) clamp(1.5rem, 6vw, 5rem);
}

.container {
    max-width: 68rem;
    margin: 0 auto;
}

/* ── Hero ──────────────────────────────────────────── */
.hero {
    position: relative;
    overflow: hidden;
    min-height: calc(100vh - var(--nav-h));
    display: flex;
    align-items: center;
    background:
            radial-gradient(ellipse 70% 50% at 85% 20%, rgba(110, 196, 212, 0.12), transparent),
            radial-gradient(ellipse 50% 60% at 15% 80%, rgba(14, 65, 85, 0.06), transparent),
            var(--bg);
}

/* Decorative node constellation — pure CSS */
.hero::before {
    content: '';
    position: absolute;
    top: 8%;
    right: 6%;
    width: 340px;
    height: 340px;
    background:
            radial-gradient(circle 8px at 30% 15%,  var(--mid-teal) 60%, transparent 61%),
            radial-gradient(circle 5px at 78% 38%,  var(--light-teal) 60%, transparent 61%),
            radial-gradient(circle 6px at 55% 82%,  var(--mid-teal) 60%, transparent 61%),
            radial-gradient(circle 4px at 12% 60%,  var(--cyan) 60%, transparent 61%);
    opacity: 0.45;
    animation: drift 20s ease-in-out infinite alternate;
}

.hero::after {
    content: '';
    position: absolute;
    bottom: 12%;
    left: 4%;
    width: 200px;
    height: 200px;
    background:
            radial-gradient(circle 6px at 20% 25%, var(--light-teal) 60%, transparent 61%),
            radial-gradient(circle 4px at 80% 70%, var(--cyan) 60%, transparent 61%);
    opacity: 0.3;
    animation: drift 16s ease-in-out 2s infinite alternate-reverse;
}

@keyframes drift {
    0%   { transform: translate(0, 0) rotate(0deg); }
    100% { transform: translate(8px, -12px) rotate(3deg); }
}

.hero-content {
    position: relative;
    z-index: 1;
    max-width: 42rem;
}

.hero-label {
    display: inline-block;
    font-family: var(--font-mono);
    font-size: 0.72rem;
    letter-spacing: 0.14em;
    text-transform: uppercase;
    color: var(--teal);
    border: 1px solid var(--ice);
    background: var(--white);
    padding: 0.35em 0.9em;
    border-radius: 2px;
    margin-bottom: 1.8rem;
    animation: fadeUp 0.6s ease both;
}

.hero h1 {
    font-family: var(--font-display);
    font-size: clamp(2.4rem, 5.5vw, 4rem);
    font-weight: 400;
    line-height: 1.18;
    color: var(--navy);
    margin-bottom: 1.5rem;
    animation: fadeUp 0.6s 0.1s ease both;
}

.hero h1 em {
    font-style: italic;
    color: var(--deep-teal);
}

.hero p {
    font-size: 1.1rem;
    color: var(--text-mid);
    max-width: 34rem;
    margin-bottom: 2.4rem;
    animation: fadeUp 0.6s 0.2s ease both;
}

.hero-cta {
    display: inline-flex;
    align-items: center;
    gap: 0.6rem;
    text-decoration: none;
    font-size: 0.85rem;
    font-weight: 600;
    letter-spacing: 0.04em;
    color: var(--white);
    background: linear-gradient(135deg, var(--deep-teal), var(--teal));
    padding: 0.85em 2em;
    border-radius: 3px;
    transition: transform 0.2s, box-shadow 0.25s;
    animation: fadeUp 0.6s 0.3s ease both;
}

.hero-cta:hover {
    transform: translateY(-1px);
    box-shadow: 0 6px 24px rgba(14, 65, 85, 0.22);
}

.hero-cta svg {
    width: 14px;
    height: 14px;
    transition: transform 0.2s;
}

.hero-cta:hover svg {
    transform: translateX(3px);
}

@keyframes fadeUp {
    from { opacity: 0; transform: translateY(16px); }
    to   { opacity: 1; transform: translateY(0); }
}

/* ── Divider ───────────────────────────────────────── */
.divider {
    height: 1px;
    border: none;
    background: linear-gradient(90deg, transparent, var(--ice), var(--light-teal), var(--ice), transparent);
    margin: 0 clamp(1.5rem, 6vw, 5rem);
}

/* ── Services / Feature Cards ──────────────────────── */
.services { background: var(--white); }

.section-header {
    margin-bottom: 3.5rem;
}

.section-header .overline {
    font-family: var(--font-mono);
    font-size: 0.7rem;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    color: var(--teal);
    margin-bottom: 0.8rem;
}

.section-header h2 {
    font-family: var(--font-display);
    font-size: clamp(1.7rem, 3.5vw, 2.4rem);
    font-weight: 400;
    color: var(--navy);
}

.card-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(18rem, 1fr));
    gap: 1.5rem;
}

.card {
    padding: 2rem;
    border: 1px solid rgba(14, 65, 85, 0.07);
    border-radius: 4px;
    background: var(--bg);
    transition: border-color 0.25s, box-shadow 0.3s;
}

.card:hover {
    border-color: var(--light-teal);
    box-shadow: 0 4px 20px rgba(14, 65, 85, 0.06);
}

.card-icon {
    width: 2.4rem;
    height: 2.4rem;
    margin-bottom: 1.2rem;
    color: var(--teal);
}

.card h3 {
    font-family: var(--font-display);
    font-size: 1.2rem;
    font-weight: 400;
    color: var(--navy);
    margin-bottom: 0.6rem;
}

.card p {
    font-size: 0.92rem;
    color: var(--text-mid);
    line-height: 1.6;
}

/* ── About / Philosophy ────────────────────────────── */
.about {
    background: var(--bg);
}

.about-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: start;
}

.about-text h2 {
    font-family: var(--font-display);
    font-size: clamp(1.7rem, 3.5vw, 2.4rem);
    font-weight: 400;
    color: var(--navy);
    margin-bottom: 1.5rem;
}

.about-text p {
    color: var(--text-mid);
    margin-bottom: 1.2rem;
}

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

.about-aside {
    padding: 2.5rem;
    background: var(--white);
    border: 1px solid rgba(14, 65, 85, 0.07);
    border-radius: 4px;
    position: relative;
}

.about-aside::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 3px;
    height: 100%;
    background: linear-gradient(180deg, var(--mid-teal), var(--light-teal), var(--cyan));
    border-radius: 3px 0 0 3px;
}

.about-aside blockquote {
    font-family: var(--font-display);
    font-size: 1.15rem;
    font-style: italic;
    color: var(--deep-teal);
    line-height: 1.6;
    margin-bottom: 1rem;
}

.about-aside cite {
    font-family: var(--font-mono);
    font-style: normal;
    font-size: 0.72rem;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--text-light);
}

/* ── Contact Strip ─────────────────────────────────── */
.contact {
    background: linear-gradient(135deg, var(--navy), var(--deep-teal));
    color: var(--white);
    text-align: center;
}

.contact h2 {
    font-family: var(--font-display);
    font-size: clamp(1.6rem, 3vw, 2.2rem);
    font-weight: 400;
    margin-bottom: 0.8rem;
}

.contact p {
    color: var(--cyan);
    margin-bottom: 2rem;
    font-size: 1rem;
}

.contact-cta {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    text-decoration: none;
    font-size: 0.85rem;
    font-weight: 600;
    letter-spacing: 0.04em;
    color: var(--navy);
    background: var(--white);
    padding: 0.85em 2em;
    border-radius: 3px;
    transition: transform 0.2s, box-shadow 0.25s;
}

.contact-cta:hover {
    transform: translateY(-1px);
    box-shadow: 0 6px 24px rgba(0, 0, 0, 0.2);
}

/* ── Sticky Footer ─────────────────────────────────── */
footer {
    position: sticky;
    bottom: 0;
    z-index: 90;
    height: var(--foot-h);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 clamp(1.5rem, 4vw, 3rem);
    background: var(--navy);
    color: var(--text-light);
    font-size: 0.75rem;
    letter-spacing: 0.03em;
}

footer a {
    color: var(--light-teal);
    text-decoration: none;
    transition: color 0.2s;
}

footer a:hover {
    color: var(--cyan);
}

.footer-links {
    display: flex;
    gap: 1.5rem;
    list-style: none;
}

/* ── Responsive ────────────────────────────────────── */
@media (max-width: 48rem) {
    .about-grid {
        grid-template-columns: 1fr;
        gap: 2rem;
    }

    .nav-links {
        gap: 1.2rem;
    }

    .hero::before,
    .hero::after {
        display: none;
    }
}

@media (max-width: 32rem) {
    .nav-links { display: none; }
}

/* ── Language Toggle (inline in footer) ── */
.lang-toggle {
    display: inline-flex;
    align-items: center;
    gap: .15rem;
    margin-left: .5rem;
    padding-left: 1.5rem;
    border-left: 1px solid rgba(255,255,255,.12);
}

.lang-toggle button {
    all: unset;
    cursor: pointer;
    padding: .2rem .4rem;
    border-radius: 3px;
    color: var(--text-light);
    font-size: .75rem;
    font-weight: 500;
    letter-spacing: .04em;
    transition: color .2s ease, background .2s ease;
}

.lang-toggle button:hover {
    color: var(--cyan);
}

.lang-toggle button.active {
    color: var(--white);
}

.lang-sep {
    color: rgba(255,255,255,.2);
    font-size: .7rem;
    user-select: none;
}