/* ============================================================
   KoFi Tech – style.css
   Palette: dark navy base + gold accent + white
   Font: Inter (Google Fonts)
   Breakpoints: 375 / 768 / 1024 / 1440
   ============================================================ */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700;800&display=swap');

/* ── Tokens ──────────────────────────────────────────────── */
:root {
  --color-bg:        #0D1117;
  --color-surface:   #161B22;
  --color-border:    #21262D;
  --color-text:      #E6EDF3;
  --color-muted:     #8B949E;
  --color-accent:    #C9A84C;
  --color-accent-dk: #A8882F;
  --color-white:     #FFFFFF;
  --color-error:     #F85149;
  --color-success:   #3FB950;

  --font-sans: 'Inter', system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;

  --radius-sm:  4px;
  --radius-md:  8px;
  --radius-lg:  12px;

  --shadow-sm: 0 1px 3px rgba(0,0,0,.4);
  --shadow-md: 0 4px 16px rgba(0,0,0,.5);

  --transition: 180ms ease;

  --max-w: 1100px;
  --gutter: 1.25rem;
}

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

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

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

body {
  font-family: var(--font-sans);
  background: var(--color-bg);
  color: var(--color-text);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

img, svg { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
ul { list-style: none; }
button { font-family: inherit; cursor: pointer; border: none; background: none; }

/* ── Utility ─────────────────────────────────────────────── */
.container {
  width: 100%;
  max-width: var(--max-w);
  margin-inline: auto;
  padding-inline: var(--gutter);
}

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

/* ── Typography ──────────────────────────────────────────── */
h1, h2, h3, h4 {
  font-weight: 700;
  line-height: 1.2;
  letter-spacing: -0.02em;
  color: var(--color-white);
}

h1 { font-size: clamp(2rem, 5vw, 3.25rem); }
h2 { font-size: clamp(1.5rem, 3.5vw, 2.25rem); }
h3 { font-size: 1.125rem; font-weight: 600; }

p { color: var(--color-muted); line-height: 1.75; }
p + p { margin-top: .875rem; }

/* ── Buttons ─────────────────────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: .5rem;
  padding: .75rem 1.75rem;
  border-radius: var(--radius-md);
  font-size: .9375rem;
  font-weight: 600;
  transition: background var(--transition), color var(--transition), box-shadow var(--transition);
  cursor: pointer;
}

.btn:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 3px;
}

.btn-primary {
  background: var(--color-accent);
  color: #0D1117;
}
.btn-primary:hover {
  background: var(--color-accent-dk);
  box-shadow: 0 0 0 4px rgba(201,168,76,.18);
}

.btn-outline {
  border: 1.5px solid var(--color-border);
  color: var(--color-text);
  background: transparent;
}
.btn-outline:hover {
  border-color: var(--color-accent);
  color: var(--color-accent);
}

/* ── Divider ─────────────────────────────────────────────── */
.section-divider {
  height: 1px;
  background: var(--color-border);
  margin: 0 var(--gutter);
}

/* ── Section spacing ─────────────────────────────────────── */
.section { padding-block: 5rem; }
.section-sm { padding-block: 3.5rem; }

.section-label {
  display: inline-block;
  font-size: .75rem;
  font-weight: 600;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--color-accent);
  margin-bottom: 1rem;
}

/* ── HEADER ──────────────────────────────────────────────── */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(13,17,23,.85);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--color-border);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-block: 1rem;
}

.site-logo {
  font-size: 1.125rem;
  font-weight: 800;
  letter-spacing: -0.03em;
  color: var(--color-white);
}

.site-logo span {
  color: var(--color-accent);
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 2rem;
}

.site-nav a {
  font-size: .9rem;
  font-weight: 500;
  color: var(--color-muted);
  transition: color var(--transition);
}

.site-nav a:hover,
.site-nav a:focus-visible {
  color: var(--color-text);
  outline: none;
}

.site-nav a:focus-visible {
  outline: 2px solid var(--color-accent);
  border-radius: var(--radius-sm);
}

/* Mobile nav toggle */
.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: .5rem;
  border-radius: var(--radius-sm);
  transition: opacity var(--transition);
}
.nav-toggle:hover { opacity: .7; }
.nav-toggle span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--color-text);
  border-radius: 2px;
  transition: transform var(--transition), opacity var(--transition);
}
.nav-toggle[aria-expanded="true"] span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}
.nav-toggle[aria-expanded="true"] span:nth-child(2) {
  opacity: 0;
}
.nav-toggle[aria-expanded="true"] span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

@media (max-width: 640px) {
  .nav-toggle { display: flex; }

  .site-nav {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    flex-direction: column;
    align-items: flex-start;
    gap: 0;
    background: var(--color-surface);
    border-bottom: 1px solid var(--color-border);
    padding: 1rem var(--gutter);
    display: none;
  }
  .site-nav.is-open { display: flex; }
  .site-nav a { padding-block: .75rem; width: 100%; }
}

/* ── HERO ────────────────────────────────────────────────── */
.hero {
  padding-block: 6rem 5rem;
  position: relative;
  overflow: hidden;
}

/* Subtle grid background */
.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(201,168,76,.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(201,168,76,.04) 1px, transparent 1px);
  background-size: 60px 60px;
  pointer-events: none;
}

.hero-inner {
  position: relative;
  max-width: 780px;
}

.hero-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: .5rem;
  font-size: .8125rem;
  font-weight: 600;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: var(--color-accent);
  background: rgba(201,168,76,.1);
  border: 1px solid rgba(201,168,76,.2);
  border-radius: 100px;
  padding: .3rem .875rem;
  margin-bottom: 1.5rem;
}

.hero h1 { margin-bottom: 1.25rem; }

.hero-sub {
  font-size: 1.0625rem;
  color: var(--color-muted);
  max-width: 580px;
  margin-bottom: 2.25rem;
}

/* ── SERVICES ────────────────────────────────────────────── */
.services-grid {
  display: grid;
  gap: 1.25rem;
  grid-template-columns: 1fr;
  margin-top: 2.5rem;
}

@media (min-width: 640px) {
  .services-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (min-width: 900px) {
  .services-grid { grid-template-columns: repeat(3, 1fr); }
}

.service-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 1.75rem;
  transition: border-color var(--transition), box-shadow var(--transition);
}

.service-card:hover {
  border-color: rgba(201,168,76,.35);
  box-shadow: var(--shadow-md);
}

.service-icon {
  width: 40px;
  height: 40px;
  border-radius: var(--radius-md);
  background: rgba(201,168,76,.1);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1.125rem;
}

.service-icon svg {
  width: 20px;
  height: 20px;
  stroke: var(--color-accent);
  fill: none;
  stroke-width: 1.75;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.service-card h3 {
  margin-bottom: .625rem;
  color: var(--color-white);
}

.service-card p {
  font-size: .9rem;
}

/* ── WHY STRIP ───────────────────────────────────────────── */
.why-section { background: var(--color-surface); }

.why-grid {
  display: grid;
  gap: 1.5rem;
  grid-template-columns: 1fr;
  margin-top: 2.5rem;
}

@media (min-width: 640px) {
  .why-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (min-width: 900px) {
  .why-grid { grid-template-columns: repeat(3, 1fr); }
}

.why-item {
  display: flex;
  gap: 1rem;
  align-items: flex-start;
}

.why-dot {
  flex-shrink: 0;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--color-accent);
  margin-top: .45rem;
}

.why-item h3 {
  font-size: 1rem;
  margin-bottom: .375rem;
}

.why-item p {
  font-size: .875rem;
}

/* ── ABOUT ───────────────────────────────────────────────── */
.about-inner {
  max-width: 680px;
}

.about-inner p {
  font-size: 1.0625rem;
  color: var(--color-muted);
}

/* ── CONTACT ─────────────────────────────────────────────── */
.contact-grid {
  display: grid;
  gap: 3rem;
  grid-template-columns: 1fr;
  margin-top: 2.5rem;
}

@media (min-width: 768px) {
  .contact-grid { grid-template-columns: 1fr 1.5fr; }
}

.contact-meta { display: flex; flex-direction: column; gap: 1.25rem; }

.contact-meta-item {
  display: flex;
  gap: .75rem;
  align-items: flex-start;
}

.contact-meta-item svg {
  flex-shrink: 0;
  width: 18px;
  height: 18px;
  stroke: var(--color-accent);
  fill: none;
  stroke-width: 1.75;
  stroke-linecap: round;
  stroke-linejoin: round;
  margin-top: .2rem;
}

.contact-meta-item span {
  font-size: .9rem;
  color: var(--color-muted);
}

.contact-meta-item a {
  color: var(--color-muted);
  transition: color var(--transition);
}
.contact-meta-item a:hover { color: var(--color-accent); }

/* Form */
.contact-form { display: flex; flex-direction: column; gap: 1rem; }

.form-row {
  display: grid;
  gap: 1rem;
  grid-template-columns: 1fr;
}

@media (min-width: 480px) {
  .form-row { grid-template-columns: 1fr 1fr; }
}

.form-group { display: flex; flex-direction: column; gap: .375rem; }

.form-group label {
  font-size: .8125rem;
  font-weight: 500;
  color: var(--color-text);
}

.form-group .required-mark { color: var(--color-accent); margin-left: 2px; }

.form-group input,
.form-group textarea,
.form-group select {
  width: 100%;
  padding: .6875rem .875rem;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  color: var(--color-text);
  font-family: var(--font-sans);
  font-size: .9375rem;
  line-height: 1.5;
  transition: border-color var(--transition), box-shadow var(--transition);
  -webkit-appearance: none;
}

.form-group input::placeholder,
.form-group textarea::placeholder {
  color: var(--color-muted);
  opacity: .7;
}

.form-group input:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--color-accent);
  box-shadow: 0 0 0 3px rgba(201,168,76,.15);
}

.form-group input.is-error,
.form-group textarea.is-error {
  border-color: var(--color-error);
}

.form-group textarea {
  resize: vertical;
  min-height: 130px;
}

.field-error {
  font-size: .8125rem;
  color: var(--color-error);
  display: none;
}
.is-error + .field-error { display: block; }

/* Honeypot: visually hidden */
.hp-field { position: absolute; left: -9999px; opacity: 0; height: 0; overflow: hidden; }

.form-notice {
  padding: .875rem 1.125rem;
  border-radius: var(--radius-md);
  font-size: .9rem;
  font-weight: 500;
  display: flex;
  align-items: flex-start;
  gap: .625rem;
}
.form-notice svg {
  flex-shrink: 0;
  width: 18px; height: 18px;
  stroke-width: 2;
  stroke-linecap: round;
  stroke-linejoin: round;
  fill: none;
  margin-top: .1rem;
}
.form-notice.success {
  background: rgba(63,185,80,.1);
  border: 1px solid rgba(63,185,80,.25);
  color: var(--color-success);
}
.form-notice.error {
  background: rgba(248,81,73,.1);
  border: 1px solid rgba(248,81,73,.25);
  color: var(--color-error);
}
.form-notice.success svg { stroke: var(--color-success); }
.form-notice.error svg { stroke: var(--color-error); }

.form-submit {
  display: flex;
  align-items: center;
  gap: 1rem;
  flex-wrap: wrap;
}

.form-submit .btn { min-width: 160px; justify-content: center; }

/* ── FOOTER ──────────────────────────────────────────────── */
.site-footer {
  background: var(--color-surface);
  border-top: 1px solid var(--color-border);
  padding-block: 2.25rem;
}

.footer-inner {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  align-items: flex-start;
}

.footer-logo {
  font-size: 1rem;
  font-weight: 700;
  color: var(--color-white);
  letter-spacing: -0.02em;
}

.footer-logo span { color: var(--color-accent); }

.footer-details {
  font-size: .8125rem;
  color: var(--color-muted);
  line-height: 1.9;
}

.footer-details a {
  color: var(--color-muted);
  transition: color var(--transition);
}
.footer-details a:hover { color: var(--color-accent); }

.footer-copy {
  margin-top: .5rem;
  font-size: .75rem;
  color: rgba(139,148,158,.5);
}

@media (min-width: 768px) {
  .footer-inner {
    flex-direction: row;
    align-items: flex-end;
    justify-content: space-between;
  }
}