/* ============================================================
   DESIGN TOKENS
============================================================ */
:root, [data-theme="light"] {
  /* Type scale — tighter, readable at all sizes */
  --text-xs:   clamp(0.7rem,  0.65rem + 0.2vw,  0.8rem);
  --text-sm:   clamp(0.8rem,  0.75rem + 0.25vw, 0.9rem);
  --text-base: clamp(0.9rem,  0.85rem + 0.22vw, 1rem);
  --text-lg:   clamp(1rem,    0.9rem  + 0.45vw, 1.2rem);
  --text-xl:   clamp(1.15rem, 0.95rem + 0.8vw,  1.6rem);
  --text-2xl:  clamp(1.4rem,  1rem    + 1.4vw,  2.1rem);
  --text-hero: clamp(1.8rem,  0.8rem  + 3.6vw,  3.6rem);

  /* Spacing — fluid scale */
  --space-1:  0.25rem;
  --space-2:  0.5rem;
  --space-3:  0.75rem;
  --space-4:  1rem;
  --space-5:  1.25rem;
  --space-6:  1.5rem;
  --space-8:  clamp(1.25rem, 1rem + 1vw, 2rem);
  --space-10: clamp(1.5rem,  1rem + 1.5vw, 2.5rem);
  --space-12: clamp(1.75rem, 1rem + 2vw,  3rem);
  --space-16: clamp(2rem,    1rem + 3vw,  4rem);
  --space-20: clamp(2.5rem,  1rem + 3.5vw, 5rem);
  --space-24: clamp(3rem,    1.5rem + 4vw, 6rem);
  --space-32: clamp(3.5rem,  1.5rem + 5vw, 8rem);

  /* Colours */
  --color-bg:               #f4f6f8;
  --color-surface:          #ffffff;
  --color-surface-2:        #f8fafc;
  --color-surface-offset:   #e9eef2;
  --color-surface-offset-2: #dbe4ea;
  --color-surface-dynamic:  #d0dae2;
  --color-divider:          #d8e0e6;
  --color-border:           rgba(15, 23, 32, 0.12);
  --color-text:             #12202b;
  --color-text-muted:       #516270;
  --color-text-faint:       #7f919e;
  --color-text-inverse:     #eff6f7;
  --color-primary:          #0b7a78;
  --color-primary-hover:    #086260;
  --color-primary-active:   #064b49;
  --color-primary-highlight:#cfe9e8;

  /* Shape */
  --radius-sm:   0.375rem;
  --radius-md:   0.625rem;
  --radius-lg:   0.875rem;
  --radius-xl:   1.25rem;
  --radius-full: 9999px;

  /* Motion */
  --transition-interactive: 180ms cubic-bezier(0.16, 1, 0.3, 1);

  /* Shadow */
  --shadow-sm: 0 1px 2px rgba(8, 18, 24, 0.06);
  --shadow-md: 0 8px 24px rgba(8, 18, 24, 0.10);
  --shadow-lg: 0 20px 52px rgba(8, 18, 24, 0.14);

  /* Layout */
  --content-default: 1120px;
}

[data-theme="dark"] {
  --color-bg:               #0d1419;
  --color-surface:          #111c23;
  --color-surface-2:        #15212a;
  --color-surface-offset:   #1a2832;
  --color-surface-offset-2: #223341;
  --color-surface-dynamic:  #2b4252;
  --color-divider:          #21303b;
  --color-border:           rgba(236, 245, 247, 0.12);
  --color-text:             #eaf3f5;
  --color-text-muted:       #a1b2bd;
  --color-text-faint:       #6d7f8b;
  --color-text-inverse:     #0d1419;
  --color-primary:          #49b8b2;
  --color-primary-hover:    #6ac9c3;
  --color-primary-active:   #89d8d2;
  --color-primary-highlight:#183436;
  --shadow-sm: 0 1px 2px rgba(0,0,0,0.25);
  --shadow-md: 0 8px 24px rgba(0,0,0,0.32);
  --shadow-lg: 0 20px 52px rgba(0,0,0,0.42);
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme]) {
    --color-bg: #0d1419; --color-surface: #111c23; --color-surface-2: #15212a;
    --color-surface-offset: #1a2832; --color-surface-offset-2: #223341;
    --color-surface-dynamic: #2b4252; --color-divider: #21303b;
    --color-border: rgba(236,245,247,0.12);
    --color-text: #eaf3f5; --color-text-muted: #a1b2bd; --color-text-faint: #6d7f8b;
    --color-text-inverse: #0d1419; --color-primary: #49b8b2;
    --color-primary-hover: #6ac9c3; --color-primary-active: #89d8d2;
    --color-primary-highlight: #183436;
  }
}

/* ============================================================
   RESET
============================================================ */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html {
  -webkit-text-size-adjust: none;
  text-size-adjust: none;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
  scroll-behavior: smooth;
  scroll-padding-top: 5rem;
}
body {
  min-height: 100dvh;
  line-height: 1.6;
  font-family: var(--font-body);
  font-size: var(--text-base);
  color: var(--color-text);
  background:
    radial-gradient(circle at top right, rgba(11,122,120,0.10), transparent 26%),
    radial-gradient(circle at bottom left, rgba(11,122,120,0.06), transparent 24%),
    var(--color-bg);
}
img, svg { display: block; max-width: 100%; height: auto; }
a { color: inherit; text-decoration: none; }
button { cursor: pointer; background: none; border: none; }
input, textarea { font: inherit; color: inherit; }
::selection { background: rgba(11,122,120,0.2); }
:focus-visible { outline: 2px solid var(--color-primary); outline-offset: 3px; }
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: .01ms !important;
    transition-duration: .01ms !important;
    scroll-behavior: auto !important;
  }
}

/* ============================================================
   FONTS
============================================================ */
:root {
  --font-display: 'Clash Display', 'Inter', sans-serif;
  --font-body:    'Satoshi', 'Inter', sans-serif;
}

/* ============================================================
   UTILITIES
============================================================ */
.skip-link {
  position: absolute; left: 1rem; top: -3rem;
  background: var(--color-primary); color: white;
  padding: .75rem 1rem; border-radius: var(--radius-md); z-index: 1000;
}
.skip-link:focus { top: 1rem; }

.container {
  width: min(calc(100% - 2rem), var(--content-default));
  margin-inline: auto;
}

h1, h2, h3, h4 {
  font-family: var(--font-display);
  line-height: 1.1;
  letter-spacing: -0.025em;
}
h1 { font-size: var(--text-hero); max-width: 16ch; }

/* ============================================================
   HEADER / NAV
============================================================ */
.site-header {
  position: sticky; top: 0; z-index: 50;
  backdrop-filter: blur(18px);
  background: color-mix(in oklab, var(--color-bg) 84%, transparent);
  border-bottom: 1px solid var(--color-border);
}
.nav {
  display: flex; align-items: center;
  justify-content: space-between;
  gap: var(--space-3);
  min-height: 4rem;
  flex-wrap: wrap;
}
.brand {
  display: inline-flex; align-items: center;
  gap: var(--space-3); min-height: 44px;
}
.brand-mark {
  width: 2.4rem; height: 2.4rem; padding: .4rem;
  border-radius: 0.75rem;
  background: linear-gradient(145deg,
    color-mix(in oklab, var(--color-primary) 16%, var(--color-surface)),
    var(--color-surface));
  border: 1px solid var(--color-border);
  box-shadow: var(--shadow-sm);
  flex-shrink: 0;
}
.brand-text strong { display: block; font-family: var(--font-display); font-size: .9rem; letter-spacing: .02em; }
.brand-text span   { display: block; font-size: var(--text-xs); color: var(--color-text-muted); text-transform: uppercase; letter-spacing: .12em; }

.nav-links {
  display: flex; align-items: center;
  gap: var(--space-1); flex-wrap: wrap;
}
.nav-links a,
.theme-toggle,
.menu-toggle {
  min-height: 40px; min-width: 40px;
  display: inline-flex; align-items: center; justify-content: center;
  padding: 0 .8rem; border-radius: var(--radius-full);
  font-size: var(--text-sm); color: var(--color-text-muted);
  transition: background var(--transition-interactive), color var(--transition-interactive), border-color var(--transition-interactive);
  border: 1px solid transparent;
}
.nav-links a:hover,
.theme-toggle:hover,
.menu-toggle:hover {
  background: var(--color-surface); color: var(--color-text);
  border-color: var(--color-border);
}
.menu-toggle { display: none; }

/* Lang switcher */
.lang-switcher {
  display: inline-flex; align-items: center;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-full);
  padding: .2rem; gap: .1rem;
}
.lang-btn {
  min-height: 32px; min-width: 32px;
  border-radius: var(--radius-full);
  font-size: var(--text-xs); font-family: var(--font-body);
  font-weight: 700; letter-spacing: .06em;
  color: var(--color-text-muted); border: 1px solid transparent;
  padding: 0 .5rem;
  transition: background var(--transition-interactive), color var(--transition-interactive);
}
.lang-btn:hover { background: var(--color-surface-offset); color: var(--color-text); }
.lang-btn.active { background: var(--color-primary); color: #fff; }

/* ============================================================
   HERO
============================================================ */
.hero { padding-block: clamp(var(--space-12), 10vw, var(--space-32)); }

.hero-grid {
  display: grid;
  gap: var(--space-8);
  align-items: start;
  grid-template-columns: 1.1fr .9fr;
}

.eyebrow {
  display: inline-flex; align-items: center; gap: .5rem;
  font-size: var(--text-xs); text-transform: uppercase; letter-spacing: .16em;
  color: var(--color-primary);
  background: color-mix(in oklab, var(--color-primary) 8%, var(--color-surface));
  border: 1px solid color-mix(in oklab, var(--color-primary) 18%, transparent);
  border-radius: var(--radius-full);
  padding: .5rem .9rem; margin-bottom: var(--space-4);
}
.eyebrow::before {
  content: ""; width: .5rem; height: .5rem; border-radius: 50%;
  background: currentColor;
  box-shadow: 0 0 0 .22rem color-mix(in oklab, currentColor 16%, transparent);
}

.hero-copy p {
  margin-top: var(--space-4);
  font-size: var(--text-base);
  max-width: 58ch;
  color: var(--color-text-muted);
}
.hero-actions {
  display: flex; flex-wrap: wrap; gap: var(--space-3);
  margin-top: var(--space-6);
}

.btn {
  display: inline-flex; align-items: center; justify-content: center;
  gap: .55rem; min-height: 44px;
  padding: .75rem 1.1rem; border-radius: var(--radius-full);
  font-size: var(--text-sm); font-weight: 700;
  border: 1px solid transparent;
  transition: transform var(--transition-interactive),
              background var(--transition-interactive),
              color var(--transition-interactive),
              border-color var(--transition-interactive),
              box-shadow var(--transition-interactive);
  white-space: nowrap;
}
.btn:hover { transform: translateY(-1px); }
.btn-primary {
  background: var(--color-primary); color: white; box-shadow: var(--shadow-md);
}
.btn-primary:hover { background: var(--color-primary-hover); }
.btn-secondary {
  background: var(--color-surface); color: var(--color-text);
  border-color: var(--color-border);
}

/* Hero side panel */
.hero-panel {
  position: relative; isolation: isolate;
  padding: var(--space-6);
  border-radius: var(--radius-xl);
  background: linear-gradient(180deg,
    color-mix(in oklab, var(--color-surface) 86%, var(--color-primary-highlight)),
    var(--color-surface));
  border: 1px solid var(--color-border);
  box-shadow: var(--shadow-lg);
}
.hero-panel::after {
  content: ""; position: absolute;
  inset: auto -8% -16% auto;
  width: 12rem; height: 12rem; border-radius: 50%;
  background: radial-gradient(circle, color-mix(in oklab, var(--color-primary) 28%, transparent), transparent 68%);
  z-index: -1; filter: blur(10px);
}
.panel-grid { display: grid; gap: var(--space-4); }

.mini-stat {
  display: grid; grid-template-columns: auto 1fr;
  gap: var(--space-3); align-items: start;
  padding: var(--space-4);
  border-radius: var(--radius-lg);
  background: color-mix(in oklab, var(--color-surface-2) 72%, transparent);
  border: 1px solid var(--color-border);
}
.mini-stat svg { width: 1.7rem; height: 1.7rem; color: var(--color-primary); flex-shrink: 0; margin-top: .1rem; }
.mini-stat strong { display: block; font-size: var(--text-sm); margin-bottom: .1rem; }
.mini-stat span   { color: var(--color-text-muted); font-size: var(--text-xs); line-height: 1.5; }

/* ============================================================
   SECTIONS
============================================================ */
.section { padding-block: clamp(var(--space-10), 8vw, var(--space-24)); }

.section-head { display: grid; gap: var(--space-3); margin-bottom: var(--space-8); max-width: 65ch; }
.section-head h2 { font-size: var(--text-2xl); }
.section-head p  { color: var(--color-text-muted); }

/* ============================================================
   SERVICES
============================================================ */
.services-layout {
  display: grid;
  gap: var(--space-6);
  grid-template-columns: 1fr 1fr;
  align-items: start;
}
.service-feature,
.card,
.contact-card,
.about-panel,
.cta-panel {
  background: color-mix(in oklab, var(--color-surface) 95%, transparent);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-sm);
}
.service-feature {
  padding: var(--space-6);
  display: grid; gap: var(--space-5); height: 100%;
}
.service-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-5);
}
.card {
  padding: var(--space-5);
  display: grid; gap: var(--space-3);
}
.card-icon {
  width: 2.75rem; height: 2.75rem;
  border-radius: 0.75rem;
  display: inline-grid; place-items: center;
  background: color-mix(in oklab, var(--color-primary) 10%, var(--color-surface));
  color: var(--color-primary);
  border: 1px solid color-mix(in oklab, var(--color-primary) 16%, transparent);
}
.card h3  { font-size: var(--text-lg); }
.card p,
.service-feature p,
.about-panel p,
.contact-card p,
.cta-panel p { color: var(--color-text-muted); font-size: var(--text-sm); }

.feature-points { display: grid; gap: var(--space-3); list-style: none; }
.feature-points li {
  display: grid; grid-template-columns: auto 1fr;
  gap: .75rem; align-items: start;
  color: var(--color-text-muted); font-size: var(--text-sm);
}
.feature-points li::before {
  content: ""; width: .6rem; height: .6rem; border-radius: 50%;
  margin-top: .35rem; background: var(--color-primary);
  box-shadow: 0 0 0 .2rem color-mix(in oklab, var(--color-primary) 14%, transparent);
}

/* ============================================================
   ABOUT / CONTACT
============================================================ */
.about-grid,
.contact-grid { display: grid; gap: var(--space-6); grid-template-columns: 1fr 1fr; }

.about-panel,
.contact-card,
.cta-panel { padding: var(--space-6); }

.info-list { display: grid; gap: var(--space-4); margin-top: var(--space-5); }
.info-list div { padding-bottom: var(--space-4); border-bottom: 1px solid var(--color-divider); }
.info-list div:last-child { border-bottom: 0; padding-bottom: 0; }
.label  { display: block; font-size: var(--text-xs); color: var(--color-text-faint); text-transform: uppercase; letter-spacing: .13em; margin-bottom: .3rem; }
.value  { font-size: var(--text-sm); font-weight: 700; }

.pill-list { display: flex; flex-wrap: wrap; gap: var(--space-2); margin-top: var(--space-5); }
.pill {
  padding: .55rem .85rem; border-radius: var(--radius-full);
  background: color-mix(in oklab, var(--color-primary) 8%, var(--color-surface));
  color: var(--color-text); font-size: var(--text-xs); font-weight: 600;
  border: 1px solid color-mix(in oklab, var(--color-primary) 14%, transparent);
}

.contact-form { display: grid; gap: var(--space-4); margin-top: var(--space-5); }
.field { display: grid; gap: .45rem; }
.field label { font-size: var(--text-sm); font-weight: 700; }
.field input,
.field textarea {
  min-height: 44px; padding: .75rem .9rem;
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border);
  background: var(--color-surface-2);
  font-size: var(--text-sm);
}
.field textarea { min-height: 120px; resize: vertical; }

.cta-panel {
  display: grid; gap: var(--space-4); align-items: start;
  background: linear-gradient(135deg,
    color-mix(in oklab, var(--color-primary) 12%, var(--color-surface)),
    var(--color-surface));
}

/* ============================================================
   FOOTER
============================================================ */
footer {
  padding-block: var(--space-8);
  border-top: 1px solid var(--color-divider);
  color: var(--color-text-muted);
  font-size: var(--text-sm);
}
.footer-grid {
  display: flex; flex-wrap: wrap;
  justify-content: space-between; gap: var(--space-4);
}

/* ============================================================
   SCROLL REVEAL
============================================================ */
.reveal { opacity: 1; }
@supports (animation-timeline: view()) {
  .reveal {
    opacity: 0;
    animation: reveal-fade linear both;
    animation-timeline: view();
    animation-range: entry 0% entry 45%;
  }
}
@keyframes reveal-fade { to { opacity: 1; } }

/* ============================================================
   RESPONSIVE — TABLET  ≤ 960px
============================================================ */
@media (max-width: 960px) {
  .hero-grid          { grid-template-columns: 1fr; }
  .services-layout    { grid-template-columns: 1fr; }
  .service-grid       { grid-template-columns: 1fr 1fr; }
  .about-grid         { grid-template-columns: 1fr; }
  .contact-grid       { grid-template-columns: 1fr; }
}

/* ============================================================
   RESPONSIVE — MOBILE  ≤ 640px
============================================================ */
@media (max-width: 640px) {
  .menu-toggle { display: inline-flex; }
  .nav-links {
    position: absolute;
    top: calc(100% + .5rem);
    left: 1rem; right: 1rem;
    display: none; flex-direction: column; align-items: stretch;
    padding: var(--space-4);
    background: color-mix(in oklab, var(--color-surface) 96%, transparent);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-lg);
  }
  .nav-links.open { display: flex; }
  .nav-links a,
  .theme-toggle { justify-content: flex-start; width: 100%; border-radius: var(--radius-lg); }
  .lang-switcher { width: 100%; justify-content: flex-start; border-radius: var(--radius-lg); }

  .service-grid { grid-template-columns: 1fr; }

  .service-feature,
  .card,
  .about-panel,
  .contact-card,
  .cta-panel { padding: var(--space-5); }

  .hero-actions { flex-direction: column; align-items: stretch; }
  .hero-actions .btn { justify-content: center; width: 100%; }

  .section-head { margin-bottom: var(--space-6); }
  .pill-list { gap: var(--space-2); }
  .footer-grid { flex-direction: column; gap: var(--space-3); }
}

/* ============================================================
   RESPONSIVE — TINY  ≤ 380px
============================================================ */
@media (max-width: 380px) {
  .brand-text span { display: none; }
  .nav { min-height: 3.75rem; }
}