/* atifg.com landing page. No build step: plain CSS with design tokens, light/dark via
   prefers-color-scheme and an explicit [data-theme] override set by main.js. */

:root {
  --bg: #f7f8fb;
  --bg-elevated: #ffffff;
  --fg: #0f172a;
  --fg-muted: #4b5563;
  --fg-subtle: #6b7280;
  --border: #e5e7eb;
  --accent: #0f766e;
  --accent-strong: #115e59;
  --accent-soft: #ccfbf1;
  --accent-fg: #ffffff;
  --live: #15803d;
  --live-soft: #dcfce7;
  --shadow: 0 1px 2px rgb(15 23 42 / 0.05), 0 8px 24px -16px rgb(15 23 42 / 0.25);
  --radius: 14px;
  --font: ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --mono: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  --max: 1080px;
  --gutter: 16px;
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #0b1120;
    --bg-elevated: #111a2e;
    --fg: #e5e7eb;
    --fg-muted: #b4bccb;
    --fg-subtle: #8b94a7;
    --border: #1f2a44;
    --accent: #2dd4bf;
    --accent-strong: #5eead4;
    --accent-soft: #134e4a;
    --accent-fg: #042f2e;
    --live: #4ade80;
    --live-soft: #14532d;
    --shadow: 0 1px 2px rgb(0 0 0 / 0.4), 0 8px 24px -16px rgb(0 0 0 / 0.6);
  }
}
:root[data-theme="dark"] {
  --bg: #0b1120;
  --bg-elevated: #111a2e;
  --fg: #e5e7eb;
  --fg-muted: #b4bccb;
  --fg-subtle: #8b94a7;
  --border: #1f2a44;
  --accent: #2dd4bf;
  --accent-strong: #5eead4;
  --accent-soft: #134e4a;
  --accent-fg: #042f2e;
  --live: #4ade80;
  --live-soft: #14532d;
  --shadow: 0 1px 2px rgb(0 0 0 / 0.4), 0 8px 24px -16px rgb(0 0 0 / 0.6);
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  font-family: var(--font);
  font-size: 16px;
  line-height: 1.6;
  color: var(--fg);
  background: var(--bg);
  background-image:
    radial-gradient(900px 400px at 10% -10%, color-mix(in srgb, var(--accent) 14%, transparent), transparent 70%),
    radial-gradient(700px 300px at 110% 10%, color-mix(in srgb, var(--accent) 10%, transparent), transparent 70%);
  background-repeat: no-repeat;
}

a {
  color: var(--accent-strong);
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
}
a:hover {
  color: var(--accent);
}

code {
  font-family: var(--mono);
  font-size: 0.9em;
  padding: 0.05em 0.35em;
  border-radius: 6px;
  background: color-mix(in srgb, var(--fg) 7%, transparent);
}

.skip {
  position: absolute;
  left: -999px;
  top: 8px;
  background: var(--bg-elevated);
  padding: 8px 12px;
  border-radius: 8px;
  z-index: 100;
}
.skip:focus {
  left: 8px;
}

/* Top bar */
.topbar {
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  align-items: center;
  gap: 16px;
  max-width: var(--max);
  margin: 0 auto;
  padding: 12px var(--gutter);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  background: color-mix(in srgb, var(--bg) 80%, transparent);
}
.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  color: var(--fg);
  font-weight: 600;
}
.brand-mark {
  display: inline-grid;
  place-items: center;
  width: 34px;
  height: 34px;
  border-radius: 10px;
  background: var(--accent);
  color: var(--accent-fg);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.02em;
}
.nav {
  display: none;
  gap: 4px;
  margin-left: auto;
}
.nav a {
  color: var(--fg-muted);
  text-decoration: none;
  padding: 6px 10px;
  border-radius: 8px;
  font-size: 15px;
}
.nav a:hover {
  color: var(--fg);
  background: color-mix(in srgb, var(--fg) 6%, transparent);
}
@media (min-width: 640px) {
  .nav {
    display: flex;
  }
}
.theme-toggle {
  margin-left: auto;
  display: inline-grid;
  place-items: center;
  width: 36px;
  height: 36px;
  border-radius: 10px;
  border: 1px solid var(--border);
  background: var(--bg-elevated);
  color: var(--fg-muted);
  cursor: pointer;
}
@media (min-width: 640px) {
  .theme-toggle {
    margin-left: 0;
  }
}
.theme-toggle svg {
  width: 18px;
  height: 18px;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.8;
  stroke-linecap: round;
  stroke-linejoin: round;
}
.theme-toggle .icon-moon {
  display: none;
}
:root[data-theme="dark"] .theme-toggle .icon-sun {
  display: none;
}
:root[data-theme="dark"] .theme-toggle .icon-moon {
  display: block;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) .theme-toggle .icon-sun {
    display: none;
  }
  :root:not([data-theme="light"]) .theme-toggle .icon-moon {
    display: block;
  }
}

/* Layout */
main {
  max-width: var(--max);
  margin: 0 auto;
  padding: 0 var(--gutter) 48px;
}
.section {
  padding: 40px 0;
  border-top: 1px solid var(--border);
}
.section-head {
  margin-bottom: 20px;
}
.section-head h2 {
  margin: 0 0 4px;
  font-size: clamp(1.4rem, 2.5vw, 1.75rem);
  letter-spacing: -0.01em;
}
.section-head p {
  margin: 0;
  color: var(--fg-muted);
}

/* Hero */
.hero {
  padding: 48px 0 40px;
}
@media (min-width: 768px) {
  .hero {
    padding: 80px 0 56px;
  }
}
.eyebrow {
  margin: 0 0 8px;
  color: var(--accent-strong);
  font-weight: 600;
  font-size: 0.95rem;
  letter-spacing: 0.02em;
}
.hero h1 {
  margin: 0 0 16px;
  font-size: clamp(2.2rem, 6vw, 3.6rem);
  line-height: 1.05;
  letter-spacing: -0.03em;
}
.lead {
  margin: 0;
  max-width: 62ch;
  font-size: clamp(1.05rem, 1.6vw, 1.25rem);
  color: var(--fg-muted);
}
.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 24px;
}
.facts {
  list-style: none;
  margin: 32px 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  gap: 12px;
}
.facts li {
  padding: 14px 16px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--bg-elevated);
  box-shadow: var(--shadow);
}
.facts strong {
  display: block;
  font-size: 1.4rem;
  letter-spacing: -0.02em;
}
.facts span {
  color: var(--fg-subtle);
  font-size: 0.9rem;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 16px;
  border-radius: 10px;
  border: 1px solid var(--border);
  background: var(--bg-elevated);
  color: var(--fg);
  font-weight: 600;
  text-decoration: none;
  line-height: 1.2;
  transition: transform 0.12s ease, background-color 0.12s ease;
}
.btn:hover {
  transform: translateY(-1px);
  color: var(--fg);
}
.btn-primary {
  background: var(--accent);
  border-color: var(--accent);
  color: var(--accent-fg);
}
.btn-primary:hover {
  background: var(--accent-strong);
  border-color: var(--accent-strong);
  color: var(--accent-fg);
}

/* Cards and grids */
.grid {
  display: grid;
  gap: 16px;
}
.grid-skills {
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
}
.grid-apps {
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
}
.grid-credentials {
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
}
.card {
  padding: 20px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--bg-elevated);
  box-shadow: var(--shadow);
}
.card h3 {
  margin: 0 0 12px;
  font-size: 1.05rem;
}
.card h3 a {
  color: inherit;
  text-decoration: none;
}
.card h3 a:hover {
  color: var(--accent-strong);
}
.tags {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}
.tags li {
  padding: 4px 10px;
  border-radius: 999px;
  background: var(--accent-soft);
  color: var(--fg);
  font-size: 0.9rem;
  line-height: 1.4;
}
.tags-muted li {
  background: color-mix(in srgb, var(--fg) 7%, transparent);
  color: var(--fg-muted);
  font-size: 0.85rem;
}
.list {
  margin: 0;
  padding-left: 18px;
  color: var(--fg-muted);
}
.list li + li {
  margin-top: 6px;
}
.muted {
  color: var(--fg-subtle);
  white-space: nowrap;
}

/* App cards */
.app-card {
  display: flex;
  flex-direction: column;
  gap: 14px;
}
.app-card p {
  margin: 0;
  color: var(--fg-muted);
}
.app-head {
  display: flex;
  align-items: flex-start;
  gap: 12px;
}
.app-head h3 {
  margin: 0;
  font-size: 1.15rem;
}
.app-url {
  margin: 0 !important;
  font-family: var(--mono);
  font-size: 0.8rem;
  color: var(--fg-subtle) !important;
}
.app-icon {
  flex: none;
  display: inline-grid;
  place-items: center;
  width: 44px;
  height: 44px;
  border-radius: 12px;
  background: var(--accent-soft);
  color: var(--accent-strong);
}
.app-icon svg {
  width: 24px;
  height: 24px;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.8;
  stroke-linecap: round;
  stroke-linejoin: round;
}
.badge {
  margin-left: auto;
  flex: none;
  padding: 3px 9px;
  border-radius: 999px;
  border: 1px solid var(--border);
  color: var(--fg-subtle);
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.02em;
  text-transform: uppercase;
  white-space: nowrap;
}
.badge-live {
  border-color: transparent;
  background: var(--live-soft);
  color: var(--live);
}
.badge-live::before {
  content: "";
  display: inline-block;
  width: 7px;
  height: 7px;
  margin-right: 6px;
  border-radius: 50%;
  background: currentColor;
  vertical-align: 1px;
}
.app-links {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: auto;
}
.note {
  margin: 16px 0 0;
  color: var(--fg-subtle);
  font-size: 0.95rem;
}

/* Contact */
.links {
  display: grid;
  gap: 12px;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
}
.link-card {
  display: flex;
  flex-direction: column;
  gap: 2px;
  padding: 16px 18px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--bg-elevated);
  box-shadow: var(--shadow);
  text-decoration: none;
  color: var(--fg);
  transition: transform 0.12s ease, border-color 0.12s ease;
}
.link-card:hover {
  transform: translateY(-1px);
  border-color: var(--accent);
  color: var(--fg);
}
.link-title {
  font-weight: 600;
}
.link-sub {
  font-family: var(--mono);
  font-size: 0.8rem;
  color: var(--fg-subtle);
}

/* Footer */
.footer {
  max-width: var(--max);
  margin: 0 auto;
  padding: 24px var(--gutter) 40px;
  border-top: 1px solid var(--border);
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 8px;
  color: var(--fg-subtle);
  font-size: 0.9rem;
}
.footer p {
  margin: 0;
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
  .btn,
  .link-card {
    transition: none;
  }
}