/* ============================================================
   MADI Consulting Ltd. — Design System
   Corporate minimal · steel-blue accent · OHTL engineering
   ============================================================ */

/* ---------- Tokens ---------- */
:root {
  /* Type scale (fluid) */
  --text-xs: clamp(0.75rem, 0.7rem + 0.25vw, 0.8125rem);
  --text-sm: clamp(0.875rem, 0.83rem + 0.2vw, 0.9375rem);
  --text-base: clamp(1rem, 0.96rem + 0.2vw, 1.0625rem);
  --text-lg: clamp(1.125rem, 1rem + 0.6vw, 1.375rem);
  --text-xl: clamp(1.5rem, 1.2rem + 1.2vw, 2.125rem);
  --text-2xl: clamp(2rem, 1.3rem + 2.6vw, 3.25rem);
  --text-3xl: clamp(2.5rem, 1.2rem + 4vw, 4.25rem);

  /* Spacing (4px base) */
  --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: 2rem;     --space-10: 2.5rem; --space-12: 3rem;
  --space-16: 4rem;    --space-20: 5rem;   --space-24: 6rem;
  --space-32: 8rem;

  /* Radii */
  --radius-sm: 0.25rem; --radius-md: 0.5rem; --radius-lg: 0.875rem;
  --radius-full: 9999px;

  /* Widths */
  --content-narrow: 680px;
  --content-default: 1040px;
  --content-wide: 1280px;

  --transition: 200ms cubic-bezier(0.16, 1, 0.3, 1);

  /* Fonts */
  --font-display: 'Clash Display', 'Helvetica Neue', sans-serif;
  --font-body: 'Switzer', 'Inter', system-ui, sans-serif;
}

/* ---------- Light theme (default — corporate minimal) ---------- */
:root, [data-theme="light"] {
  --color-bg: #ffffff;
  --color-surface: #f7f9fb;
  --color-surface-2: #eef2f6;
  --color-surface-offset: #e7edf3;
  --color-border: #dde4ec;
  --color-divider: #eaeef3;

  --color-text: #0f1b2d;
  --color-text-muted: #54657a;
  --color-text-faint: #97a6b8;
  --color-text-inverse: #f3f7fb;

  --color-primary: #d26200;        /* MADI brand orange */
  --color-primary-hover: #b85700;
  --color-primary-active: #9c4a00;
  --color-primary-soft: #fdf0e4;

  --color-ink: #0c1726;            /* deep navy for dark sections */
  --color-ink-2: #142436;

  --shadow-sm: 0 1px 2px rgba(15,27,45,0.06);
  --shadow-md: 0 6px 20px rgba(15,27,45,0.08);
  --shadow-lg: 0 18px 48px rgba(15,27,45,0.12);
}

/* ---------- Dark theme ---------- */
[data-theme="dark"] {
  --color-bg: #0c1726;
  --color-surface: #11202f;
  --color-surface-2: #16293b;
  --color-surface-offset: #1b3145;
  --color-border: #23394e;
  --color-divider: #1a2c3e;

  --color-text: #dde7f1;
  --color-text-muted: #93a6ba;
  --color-text-faint: #5f7287;
  --color-text-inverse: #0c1726;

  --color-primary: #f3852a;
  --color-primary-hover: #f79c4f;
  --color-primary-active: #f9ad6b;
  --color-primary-soft: #2a2118;

  --color-ink: #081120;
  --color-ink-2: #0f1d2e;

  --shadow-sm: 0 1px 2px rgba(0,0,0,0.4);
  --shadow-md: 0 6px 20px rgba(0,0,0,0.45);
  --shadow-lg: 0 18px 48px rgba(0,0,0,0.55);
}

/* ---------- Base 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: 6rem;
}

body {
  min-height: 100dvh; line-height: 1.62;
  font-family: var(--font-body);
  font-size: var(--text-base);
  color: var(--color-text);
  background: var(--color-bg);
  transition: background var(--transition), color var(--transition);
}

img, picture, video, svg { display: block; max-width: 100%; height: auto; }
ul[role="list"] { list-style: none; }
input, button, textarea, select { font: inherit; color: inherit; }

h1, h2, h3, h4 { line-height: 1.1; text-wrap: balance; font-family: var(--font-display); font-weight: 600; letter-spacing: -0.01em; }
p, li { text-wrap: pretty; }

a { color: inherit; text-decoration: none; }
button { cursor: pointer; background: none; border: none; }
table { border-collapse: collapse; width: 100%; }

::selection { background: var(--color-primary); color: #fff; }
:focus-visible { outline: 2px solid var(--color-primary); outline-offset: 3px; border-radius: var(--radius-sm); }

a, button, input, textarea, select {
  transition: color var(--transition), background var(--transition),
    border-color var(--transition), box-shadow var(--transition), transform var(--transition);
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: .01ms !important; transition-duration: .01ms !important; scroll-behavior: auto !important; }
}

.sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0,0,0,0); white-space: nowrap; border: 0; }

/* ---------- Layout primitives ---------- */
.wrap { width: 100%; max-width: var(--content-wide); margin-inline: auto; padding-inline: var(--space-6); }
.wrap--default { max-width: var(--content-default); }
.wrap--narrow { max-width: var(--content-narrow); }
.section { padding-block: clamp(var(--space-16), 8vw, var(--space-32)); }
.section--tight { padding-block: clamp(var(--space-12), 6vw, var(--space-20)); }

.eyebrow {
  display: inline-flex; align-items: center; gap: var(--space-2);
  font-family: var(--font-body); font-size: var(--text-xs);
  font-weight: 600; letter-spacing: 0.14em; text-transform: uppercase;
  color: var(--color-primary);
}
.eyebrow::before { content: ""; width: 28px; height: 1.5px; background: var(--color-primary); display: inline-block; }

.section-title { font-size: var(--text-2xl); margin-bottom: var(--space-4); }
.section-lead { font-size: var(--text-lg); color: var(--color-text-muted); max-width: 60ch; }

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex; align-items: center; gap: var(--space-2);
  font-family: var(--font-body); font-weight: 600; font-size: var(--text-sm);
  padding: 0.8em 1.5em; border-radius: var(--radius-md);
  border: 1.5px solid transparent; white-space: nowrap;
}
.btn svg { width: 16px; height: 16px; }
.btn--primary { background: var(--color-primary); color: #fff; }
.btn--primary:hover { background: var(--color-primary-hover); transform: translateY(-2px); box-shadow: var(--shadow-md); }
.btn--ghost { border-color: var(--color-border); color: var(--color-text); }
.btn--ghost:hover { border-color: var(--color-primary); color: var(--color-primary); }
.btn--light { background: #fff; color: var(--color-ink); }
.btn--light:hover { transform: translateY(-2px); box-shadow: var(--shadow-md); }
.btn--outline-light { border-color: rgba(255,255,255,0.4); color: #fff; }
.btn--outline-light:hover { border-color: #fff; background: rgba(255,255,255,0.08); }

/* ---------- Header / Nav ---------- */
.header {
  position: sticky; top: 0; z-index: 100;
  background: color-mix(in srgb, var(--color-bg) 88%, transparent);
  backdrop-filter: blur(14px); -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--color-divider);
  transition: box-shadow var(--transition), background var(--transition);
}
.header--scrolled { box-shadow: var(--shadow-sm); }
.nav { display: flex; align-items: center; justify-content: space-between; height: 72px; gap: var(--space-6); }
.brand { display: flex; align-items: center; gap: var(--space-3); color: var(--color-text); }
.brand__mark { width: 40px; height: 40px; flex-shrink: 0; display: block; }
.brand__name { font-family: var(--font-display); font-weight: 700; font-size: 1.4rem; letter-spacing: -0.01em; line-height: 1; color: var(--color-primary); }
.brand__name span { color: var(--color-primary); }
.brand__tag { display: block; font-size: 0.64rem; letter-spacing: 0.18em; text-transform: uppercase; color: var(--color-text-muted); font-family: var(--font-body); font-weight: 600; margin-top: 3px; }

.nav__links { display: flex; align-items: center; gap: var(--space-1); }
.nav__link { font-size: var(--text-sm); font-weight: 500; color: var(--color-text-muted); padding: 0.5em 0.85em; border-radius: var(--radius-sm); position: relative; }
.nav__link:hover, .nav__link[aria-current="page"] { color: var(--color-text); }
.nav__link[aria-current="page"]::after { content: ""; position: absolute; left: 0.85em; right: 0.85em; bottom: 0.1em; height: 2px; background: var(--color-primary); border-radius: 2px; }

.nav__actions { display: flex; align-items: center; gap: var(--space-3); }
.theme-toggle { width: 40px; height: 40px; display: grid; place-items: center; border-radius: var(--radius-md); color: var(--color-text-muted); border: 1px solid var(--color-border); }
.theme-toggle:hover { color: var(--color-primary); border-color: var(--color-primary); }

/* Mobile nav */
.nav__burger { display: none; width: 40px; height: 40px; place-items: center; border-radius: var(--radius-md); border: 1px solid var(--color-border); color: var(--color-text); }
.nav__burger svg { width: 22px; height: 22px; }

@media (max-width: 940px) {
  .nav__links { position: fixed; inset: 72px 0 auto 0; flex-direction: column; align-items: stretch; gap: 0; background: var(--color-bg); border-bottom: 1px solid var(--color-border); padding: var(--space-4); transform: translateY(-120%); transition: transform var(--transition); box-shadow: var(--shadow-lg); }
  .nav__links.open { transform: translateY(0); }
  .nav__link { padding: var(--space-4); font-size: var(--text-base); border-bottom: 1px solid var(--color-divider); }
  .nav__link[aria-current="page"]::after { display: none; }
  .nav__burger { display: grid; }
  .nav__cta-desktop { display: none; }
}

/* ---------- Hero ---------- */
.hero { position: relative; overflow: hidden; background: var(--color-ink); color: #fff; }
.hero__bg { position: absolute; inset: 0; }
.hero__bg img { width: 100%; height: 100%; object-fit: cover; opacity: 0.55; }
.hero__bg::after { content: ""; position: absolute; inset: 0; background: linear-gradient(90deg, rgba(8,17,32,0.92) 0%, rgba(8,17,32,0.72) 45%, rgba(8,17,32,0.35) 100%); }
.hero__inner { position: relative; z-index: 2; padding-block: clamp(var(--space-24), 14vw, 11rem); max-width: 720px; }
.hero__eyebrow { color: #8fc1ec; }
.hero__eyebrow::before { background: #8fc1ec; }
.hero h1 { font-size: var(--text-3xl); margin: var(--space-4) 0 var(--space-5); color: #fff; }
.hero__lead { font-size: var(--text-lg); color: #c3d2e2; max-width: 56ch; margin-bottom: var(--space-8); }
.hero__actions { display: flex; flex-wrap: wrap; gap: var(--space-4); }
.hero__stats { position: relative; z-index: 2; display: grid; grid-template-columns: repeat(4, 1fr); gap: var(--space-4); border-top: 1px solid rgba(255,255,255,0.14); padding: var(--space-8) 0; }
.hero__stat .num { font-family: var(--font-display); font-size: var(--text-xl); font-weight: 600; color: #fff; }
.hero__stat .lbl { font-size: var(--text-xs); color: #9fb3c8; letter-spacing: 0.04em; }
@media (max-width: 720px){ .hero__stats { grid-template-columns: repeat(2,1fr); gap: var(--space-6); } }

/* ---------- Trust bar ---------- */
.trust { border-bottom: 1px solid var(--color-divider); background: var(--color-surface); }
.trust__inner { display: flex; align-items: center; flex-wrap: wrap; gap: var(--space-6) var(--space-10); padding-block: var(--space-6); }
.trust__label { font-size: var(--text-xs); text-transform: uppercase; letter-spacing: 0.12em; color: var(--color-text-faint); font-weight: 600; }
.trust__logos { display: flex; flex-wrap: wrap; gap: var(--space-6) var(--space-8); align-items: center; }
.trust__logo { font-family: var(--font-display); font-weight: 600; font-size: var(--text-base); color: var(--color-text-muted); letter-spacing: -0.01em; }

/* ---------- Service cards ---------- */
.grid { display: grid; gap: var(--space-6); }
.grid--3 { grid-template-columns: repeat(3, 1fr); }
.grid--2 { grid-template-columns: repeat(2, 1fr); }
@media (max-width: 900px){ .grid--3 { grid-template-columns: repeat(2,1fr); } }
@media (max-width: 640px){ .grid--3, .grid--2 { grid-template-columns: 1fr; } }

.card {
  background: var(--color-surface); border: 1px solid var(--color-border);
  border-radius: var(--radius-lg); padding: var(--space-8);
  display: flex; flex-direction: column; gap: var(--space-3);
  transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
}
.card:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); border-color: var(--color-primary); }
.card__icon { width: 48px; height: 48px; border-radius: var(--radius-md); display: grid; place-items: center; background: var(--color-primary-soft); color: var(--color-primary); margin-bottom: var(--space-2); }
.card__icon svg { width: 24px; height: 24px; }
.card h3 { font-size: var(--text-lg); }
.card p { color: var(--color-text-muted); font-size: var(--text-sm); }
.card__link { margin-top: auto; font-size: var(--text-sm); font-weight: 600; color: var(--color-primary); display: inline-flex; align-items: center; gap: var(--space-2); }
.card__link svg { width: 15px; height: 15px; transition: transform var(--transition); }
.card:hover .card__link svg { transform: translateX(4px); }

/* ---------- Split / feature ---------- */
.split { display: grid; grid-template-columns: 1fr 1fr; gap: clamp(var(--space-8), 5vw, var(--space-20)); align-items: center; }
.split--reverse .split__media { order: -1; }
.split__media img { border-radius: var(--radius-lg); box-shadow: var(--shadow-md); width: 100%; }
@media (max-width: 860px){ .split { grid-template-columns: 1fr; } .split--reverse .split__media { order: 0; } }

.checklist { list-style: none; display: grid; gap: var(--space-3); margin-top: var(--space-6); }
.checklist li { display: flex; gap: var(--space-3); align-items: flex-start; font-size: var(--text-sm); color: var(--color-text-muted); }
.checklist svg { width: 20px; height: 20px; color: var(--color-primary); flex-shrink: 0; margin-top: 2px; }

/* ---------- Stats band ---------- */
.statsband { background: var(--color-ink); color: #fff; }
.statsband__grid { display: grid; grid-template-columns: repeat(4,1fr); gap: var(--space-8); }
.statsband .num { font-family: var(--font-display); font-size: var(--text-2xl); font-weight: 600; color: #fff; }
.statsband .lbl { color: #9fb3c8; font-size: var(--text-sm); }
@media (max-width: 720px){ .statsband__grid { grid-template-columns: repeat(2,1fr); gap: var(--space-10) var(--space-6);} }

/* ---------- Project cards ---------- */
.project { border: 1px solid var(--color-border); border-radius: var(--radius-lg); overflow: hidden; background: var(--color-surface); display: flex; flex-direction: column; transition: transform var(--transition), box-shadow var(--transition); }
.project:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); }
.project__img { aspect-ratio: 4/3; overflow: hidden; }
.project__img img { width: 100%; height: 100%; object-fit: cover; transition: transform 500ms ease; }
.project:hover .project__img img { transform: scale(1.05); }
.project__body { padding: var(--space-6); display: flex; flex-direction: column; gap: var(--space-3); }
.project__tags { display: flex; flex-wrap: wrap; gap: var(--space-2); }
.tag { font-size: var(--text-xs); font-weight: 600; padding: 0.3em 0.7em; border-radius: var(--radius-full); background: var(--color-primary-soft); color: var(--color-primary); letter-spacing: 0.02em; }
.project h3 { font-size: var(--text-lg); }
.project p { font-size: var(--text-sm); color: var(--color-text-muted); }
.project__meta { display: flex; flex-wrap: wrap; gap: var(--space-4); margin-top: var(--space-2); font-size: var(--text-xs); color: var(--color-text-faint); }
.project__meta b { color: var(--color-text); font-weight: 600; }

/* ---------- Data table ---------- */
.table-wrap { overflow-x: auto; border: 1px solid var(--color-border); border-radius: var(--radius-lg); }
table.data { font-size: var(--text-sm); min-width: 640px; }
table.data th, table.data td { text-align: left; padding: var(--space-4) var(--space-5); border-bottom: 1px solid var(--color-divider); vertical-align: top; }
table.data thead th { background: var(--color-surface-2); font-weight: 600; color: var(--color-text); font-size: var(--text-xs); text-transform: uppercase; letter-spacing: 0.06em; }
table.data tbody tr:hover { background: var(--color-surface); }
table.data td { color: var(--color-text-muted); }
table.data td b { color: var(--color-text); font-weight: 600; }

/* ---------- CTA band ---------- */
.cta { position: relative; overflow: hidden; background: var(--color-ink); color: #fff; }
.cta__bg { position: absolute; inset: 0; }
.cta__bg img { width: 100%; height: 100%; object-fit: cover; opacity: 0.4; }
.cta__bg::after { content:""; position:absolute; inset:0; background: linear-gradient(180deg, rgba(8,17,32,0.7), rgba(8,17,32,0.88)); }
.cta__inner { position: relative; z-index: 2; text-align: center; max-width: 720px; margin-inline: auto; }
.cta h2 { font-size: var(--text-2xl); color: #fff; margin-bottom: var(--space-4); }
.cta p { color: #c3d2e2; font-size: var(--text-lg); margin-bottom: var(--space-8); }
.cta__actions { display: flex; flex-wrap: wrap; gap: var(--space-4); justify-content: center; }

/* ---------- Page hero (interior) ---------- */
.pagehero { background: var(--color-surface); border-bottom: 1px solid var(--color-divider); }
.pagehero__inner { padding-block: clamp(var(--space-16), 8vw, var(--space-24)); max-width: 760px; }
.pagehero h1 { font-size: var(--text-2xl); margin: var(--space-4) 0 var(--space-4); }
.pagehero p { font-size: var(--text-lg); color: var(--color-text-muted); }
.crumbs { font-size: var(--text-xs); color: var(--color-text-faint); display: flex; gap: var(--space-2); align-items: center; }
.crumbs a:hover { color: var(--color-primary); }

/* ---------- Prose / service detail ---------- */
.prose h2 { font-size: var(--text-xl); margin: var(--space-12) 0 var(--space-4); }
.prose h3 { font-size: var(--text-lg); margin: var(--space-8) 0 var(--space-3); }
.prose p { margin-bottom: var(--space-4); color: var(--color-text-muted); }
.prose ul { list-style: none; display: grid; gap: var(--space-3); margin: var(--space-4) 0 var(--space-6); }
.prose ul li { display: flex; gap: var(--space-3); align-items: flex-start; color: var(--color-text-muted); font-size: var(--text-sm); }
.prose ul li::before { content: ""; width: 7px; height: 7px; border-radius: 2px; background: var(--color-primary); flex-shrink: 0; margin-top: 0.6em; transform: rotate(45deg); }

/* sidebar layout */
.docgrid { display: grid; grid-template-columns: 240px 1fr; gap: clamp(var(--space-8), 5vw, var(--space-20)); align-items: start; }
.docnav { position: sticky; top: 96px; display: flex; flex-direction: column; gap: var(--space-1); border-left: 2px solid var(--color-divider); padding-left: var(--space-4); }
.docnav a { font-size: var(--text-sm); color: var(--color-text-muted); padding: var(--space-2) 0; }
.docnav a:hover { color: var(--color-primary); }
@media (max-width: 860px){ .docgrid { grid-template-columns: 1fr; } .docnav { display: none; } }

/* ---------- Contact ---------- */
.contact-grid { display: grid; grid-template-columns: 1fr 1fr; gap: clamp(var(--space-8), 5vw, var(--space-16)); align-items: start; }
@media (max-width: 860px){ .contact-grid { grid-template-columns: 1fr; } }
.field { display: flex; flex-direction: column; gap: var(--space-2); margin-bottom: var(--space-5); }
.field label { font-size: var(--text-sm); font-weight: 600; }
.field input, .field textarea, .field select { padding: 0.75em 1em; border: 1.5px solid var(--color-border); border-radius: var(--radius-md); background: var(--color-bg); font-size: var(--text-sm); }
.field input:focus, .field textarea:focus, .field select:focus { border-color: var(--color-primary); outline: none; }
.info-block { display: flex; gap: var(--space-4); margin-bottom: var(--space-6); }
.info-block .ico { width: 44px; height: 44px; border-radius: var(--radius-md); background: var(--color-primary-soft); color: var(--color-primary); display: grid; place-items: center; flex-shrink: 0; }
.info-block .ico svg { width: 20px; height: 20px; }
.info-block h4 { font-family: var(--font-body); font-size: var(--text-sm); text-transform: uppercase; letter-spacing: 0.08em; color: var(--color-text-faint); margin-bottom: 2px; }
.info-block p, .info-block a { font-size: var(--text-base); color: var(--color-text); }
.info-block a:hover { color: var(--color-primary); }

/* ---------- Value props ---------- */
.value { display: flex; gap: var(--space-4); }
.value .vnum { font-family: var(--font-display); font-size: var(--text-xl); color: var(--color-primary); font-weight: 600; line-height: 1; flex-shrink: 0; }
.value h3 { font-size: var(--text-lg); margin-bottom: var(--space-2); }
.value p { font-size: var(--text-sm); color: var(--color-text-muted); }

/* ---------- Footer ---------- */
.footer { background: var(--color-ink); color: #c3d2e2; padding-block: var(--space-16) var(--space-8); }
.footer__grid { display: grid; grid-template-columns: 1.6fr 1fr 1fr 1fr; gap: var(--space-8); margin-bottom: var(--space-12); }
@media (max-width: 860px){ .footer__grid { grid-template-columns: 1fr 1fr; gap: var(--space-10) var(--space-6);} }
@media (max-width: 480px){ .footer__grid { grid-template-columns: 1fr; } }
.footer__brand .brand__name { color: var(--color-primary); }
.footer__brand .brand__tag { color: #9fb3c8; }
.footer__brand p { font-size: var(--text-sm); color: #9fb3c8; margin-top: var(--space-4); max-width: 32ch; }
.footer h4 { font-family: var(--font-body); font-size: var(--text-xs); text-transform: uppercase; letter-spacing: 0.12em; color: #6f8298; margin-bottom: var(--space-4); }
.footer__links { display: flex; flex-direction: column; gap: var(--space-2); }
.footer__links a { font-size: var(--text-sm); color: #c3d2e2; }
.footer__links a:hover { color: #fff; }
.footer__bottom { border-top: 1px solid rgba(255,255,255,0.1); padding-top: var(--space-6); display: flex; flex-wrap: wrap; justify-content: space-between; gap: var(--space-4); font-size: var(--text-xs); color: #6f8298; }

/* ---------- Reveal animation ---------- */
.reveal { opacity: 0; transform: translateY(24px); transition: opacity 600ms ease, transform 600ms cubic-bezier(0.16,1,0.3,1); }
.reveal.in { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce){ .reveal { opacity: 1; transform: none; } }