/*
  Monzo-inspired visual language: bold gradients, friendly type, glassy cards.
  Accessibility: high-contrast defaults, focus styles, reduced-motion support.
*/

:root {
  --bg: #0f1115;
  --bg-2: #0b0d10;
  --text: #e6e8ef;
  --muted: #a6abbd;
  --card: rgba(255, 255, 255, 0.06);
  --outline: rgba(255, 255, 255, 0.14);
  --brand-1: #ff6b6b; /* coral */
  --brand-2: #6c5ce7; /* indigo */
  --brand-3: #20c997; /* teal */
  --accent: #ffd166;
  --shadow: 0 10px 30px rgba(0,0,0,0.45);

  --radius: 16px;
  --radius-sm: 12px;
  --radius-lg: 22px;
  --container: 1120px;
  color-scheme: dark light;
}

[data-theme="light"] {
  --bg: #fcfcfe;
  --bg-2: #ffffff;
  --text: #121319;
  --muted: #525866;
  --card: rgba(10, 12, 16, 0.04);
  --outline: rgba(10, 12, 16, 0.14);
  --shadow: 0 10px 24px rgba(0,0,0,0.08);
}

* { box-sizing: border-box; }
html, body { height: 100%; }
html.no-js .theme-toggle { display: none; }
body {
  margin: 0;
  font-family: Inter, Manrope, ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, Helvetica, Arial, "Apple Color Emoji", "Segoe UI Emoji";
  color: var(--text);
  background: var(--bg);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}
html { scroll-behavior: smooth; }

/* Icon utilities */
.icon { width: 1.1em; height: 1.1em; display: inline-block; vertical-align: -0.15em; color: currentColor; }
.with-icon { display: inline-flex; align-items: center; gap: 8px; }
.muted { color: var(--muted); }

img, svg { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }

.container { max-width: var(--container); margin: 0 auto; padding: 0 20px; }

.skip-link { position: absolute; left: -9999px; top: auto; width: 1px; height: 1px; overflow: hidden; }
.skip-link:focus { left: 20px; top: 12px; width: auto; height: auto; background: var(--bg-2); color: var(--text); padding: 10px 14px; border-radius: 8px; box-shadow: var(--shadow); }

/* Header */
.site-header { position: sticky; top: 0; z-index: 50; backdrop-filter: saturate(140%) blur(10px); background: color-mix(in srgb, var(--bg) 86%, transparent); border-bottom: 1px solid var(--outline); transition: box-shadow 220ms ease, background 220ms ease; }
.site-header.scrolled { background: color-mix(in srgb, var(--bg) 92%, transparent); box-shadow: 0 6px 24px rgba(0,0,0,0.28); }
.nav { display: flex; align-items: center; justify-content: space-between; height: 64px; }
.brand { display: inline-flex; align-items: center; gap: 10px; font-weight: 700; letter-spacing: 0.2px; }
.links { display: none; gap: 22px; }
.links a { color: var(--muted); font-weight: 500; }
.links a:hover { color: var(--text); }
.actions { display: flex; align-items: center; gap: 12px; }
.menu-toggle { display: inline-flex; align-items: center; justify-content: center; width: 38px; height: 38px; border-radius: 10px; border: 1px solid var(--outline); background: var(--bg-2); color: var(--text); }
.theme-toggle { display: inline-flex; align-items: center; gap: 6px; border: 1px solid var(--outline); background: var(--bg-2); color: var(--text); padding: 8px 10px; border-radius: 999px; cursor: pointer; }
.theme-toggle .sun { display: none; }
[data-theme="light"] .theme-toggle .sun { display: inline; }
[data-theme="light"] .theme-toggle .moon { display: none; }

@media (min-width: 780px) {
  .links { display: flex; }
  .menu-toggle { display: none; }
}

/* Mobile menu */
.mobile-menu { position: fixed; inset: 0; z-index: 40; display: grid; grid-template-rows: 1fr; }
.mobile-menu[hidden] { display: none; }
.mobile-menu-inner { position: relative; z-index: 2; align-self: start; margin-top: 64px; background: var(--bg-2); border-bottom: 1px solid var(--outline); box-shadow: var(--shadow); }
.mobile-links { display: grid; padding: 10px 20px 18px; }
.mobile-links a { padding: 12px 8px; border-radius: 10px; color: var(--text); }
.mobile-links a:hover { background: var(--card); }
.mobile-backdrop { position: fixed; inset: 0; z-index: 1; background: rgba(0,0,0,0.3); backdrop-filter: blur(2px); border: 0; padding: 0; margin: 0; }
body.menu-open { overflow: hidden; }

/* Scroll progress */
.scroll-progress { position: fixed; top: 0; left: 0; height: 3px; width: 0; z-index: 60; background: linear-gradient(90deg, var(--brand-1), var(--brand-2)); box-shadow: 0 4px 12px rgba(108,92,231,0.45); transition: width 80ms linear; }

/* Hero */
.hero { position: relative; overflow: clip; border-bottom: 1px solid var(--outline); background: none; }
.hero-inner { display: grid; grid-template-columns: 1fr; gap: 40px; padding: 64px 20px 84px; align-items: center; }
.hero-copy h1 { font-size: clamp(32px, 4vw, 56px); line-height: 1.05; margin: 0 0 14px; font-weight: 800; letter-spacing: -0.02em; }
.hero-copy .accent { background: linear-gradient(90deg, var(--brand-1), var(--brand-2)); -webkit-background-clip: text; background-clip: text; color: transparent; }
.hero-copy p { color: var(--muted); max-width: 56ch; }

.cta-row { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 18px; }
.btn { display: inline-flex; align-items: center; justify-content: center; padding: 12px 18px; border-radius: 12px; border: 1px solid var(--outline); font-weight: 600; }
.btn-primary { background: linear-gradient(135deg, var(--brand-1), var(--brand-2)); border: none; color: white; box-shadow: var(--shadow); }
.btn-primary:hover { transform: translateY(-1px); box-shadow: 0 16px 40px rgba(108,92,231,0.35); }
.btn-ghost { background: var(--bg-2); color: var(--text); }
.btn-ghost:hover { border-color: color-mix(in srgb, var(--text) 18%, transparent); }

.trust { display: flex; align-items: center; gap: 10px; margin-top: 18px; color: var(--muted); font-size: 14px; }
.trust .dot { width: 8px; height: 8px; border-radius: 999px; background: linear-gradient(135deg, var(--brand-3), var(--brand-2)); box-shadow: 0 0 18px rgba(32,201,151,0.6); }

/* (removed hero credit card visual styles) */

@media (min-width: 900px) {
  .hero-inner { gap: 60px; padding: 86px 20px 120px; }
}

/* Background FX */
.fx { position: absolute; inset: 0; pointer-events: none; }
.fx-bg { background: radial-gradient(60% 50% at 70% -10%, rgba(108,92,231,0.25), transparent 60%), radial-gradient(45% 40% at 0% 10%, rgba(255,107,107,0.2), transparent 50%), radial-gradient(40% 35% at 90% 60%, rgba(32,201,151,0.18), transparent 60%); filter: blur(30px); opacity: 0.9; }
.fx-blob { width: 32vw; height: 32vw; max-width: 520px; max-height: 520px; border-radius: 50%; mix-blend-mode: screen; filter: blur(30px); opacity: 0.5; }
.fx-1 { left: -8vw; top: 8vh; background: radial-gradient(circle at 30% 30%, rgba(255,107,107,0.55), transparent 50%); }
.fx-2 { right: -10vw; top: -6vh; background: radial-gradient(circle at 60% 60%, rgba(108,92,231,0.6), transparent 55%); }

/* Sections */
.section { padding: 56px 0; scroll-margin-top: 84px; }
.section-title { font-size: clamp(22px, 3vw, 32px); margin: 0 0 16px; letter-spacing: -0.01em; }
@media (min-width: 900px) {
  .section { padding: 80px 0; }
}
.section-header { display: flex; align-items: center; justify-content: space-between; gap: 12px; margin-bottom: 12px; }
.section-header { display: flex; align-items: center; justify-content: space-between; gap: 12px; margin-bottom: 6px; }

.features .grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); gap: 20px; }
.tile { padding: 20px; border-radius: var(--radius); background: var(--card); border: 1px solid var(--outline); box-shadow: var(--shadow); transition: transform 220ms ease, box-shadow 220ms ease; }
.tile:hover { transform: translateY(-3px); box-shadow: 0 20px 48px rgba(0,0,0,0.35); }
.tile h3 { margin: 0 0 8px; font-size: 18px; }
.tile p { color: var(--muted); margin: 0 0 12px; }
.tile-link { color: color-mix(in srgb, var(--text) 86%, var(--brand-2) 14%); font-weight: 600; }

/* Active nav state (scrollspy) */
.links a.active, .mobile-links a.active { color: var(--text); position: relative; }
.links a.active::after { content: ""; position: absolute; left: 0; right: 0; bottom: -8px; height: 2px; background: linear-gradient(90deg, var(--brand-1), var(--brand-2)); border-radius: 2px; }

@media (min-width: 700px) {
  .features .grid { gap: 20px; }
}
@media (min-width: 1040px) {
  .features .grid { gap: 24px; }
}

.about-grid { display: grid; grid-template-columns: 1fr; gap: 16px; }
.about .stats { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 12px; margin-top: 14px; }
.about .stat { display: flex; align-items: center; gap: 10px; padding: 12px; border-radius: var(--radius); background: var(--card); border: 1px solid var(--outline); }
.about .stat .icon { width: 1.2em; height: 1.2em; }
.bullets { margin: 0; padding-left: 18px; color: var(--muted); }
/* Skill chips */
.chips { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 12px; }
.chip { display: inline-flex; align-items: center; padding: 6px 10px; border-radius: 999px; background: var(--bg-2); border: 1px solid var(--outline); color: var(--text); font-size: 13px; }
.chip .icon { width: 1em; height: 1em; }

@media (min-width: 820px) {
  .about-grid { grid-template-columns: 1.2fr 0.8fr; gap: 20px; }
}

/* Contact */
.contact .cta-panel { border-radius: var(--radius-lg); padding: 28px; background: linear-gradient(135deg, rgba(108,92,231,0.16), rgba(32,201,151,0.12)); border: 1px solid var(--outline); box-shadow: var(--shadow); }
.contact .cta-panel h2 { margin: 0 0 8px; font-size: clamp(22px, 3vw, 30px); }
.contact .cta-panel p { margin: 0 0 16px; color: var(--muted); }
.btn .icon { width: 1.1em; height: 1.1em; }

/* Experience timeline */
.timeline { display: grid; gap: 16px; position: relative; }
.xp-item { position: relative; padding: 20px 20px 20px 58px; border-radius: var(--radius); background: var(--card); border: 1px solid var(--outline); box-shadow: var(--shadow); }
.xp-item::before { content: ""; position: absolute; left: 22px; top: 18px; width: 10px; height: 10px; border-radius: 50%; background: linear-gradient(135deg, var(--brand-1), var(--brand-2)); box-shadow: 0 0 0 4px rgba(255,255,255,0.06); }
.xp-item::after { content: ""; position: absolute; left: 26px; top: 36px; bottom: -12px; width: 2px; background: var(--outline); }
.xp-head { display: grid; grid-template-columns: 1fr auto; align-items: baseline; gap: 8px; margin-bottom: 10px; }
.xp-head .muted { color: var(--muted); }
.xp-head .right { justify-self: end; }
.xp-meta { display: flex; gap: 12px; color: var(--muted); font-size: 14px; margin-bottom: 10px; }
.xp-meta .with-icon { gap: 6px; }
.xp-head .xp-logo { width: 20px; height: 20px; border-radius: 4px; border: 1px solid var(--outline); background: var(--bg-2); object-fit: contain; }
.tags { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 12px; }
.tag { font-size: 12px; padding: 6px 10px; border-radius: 999px; border: 1px solid var(--outline); background: var(--bg-2); color: var(--text); }

/* Subsections and dividers */
.subsection-title { display: inline-flex; align-items: center; gap: 10px; font-size: 14px; color: var(--muted); text-transform: uppercase; letter-spacing: 0.08em; margin: 8px 0 12px; }
.divider { height: 1px; background: var(--outline); margin: 16px 0 20px; border: 0; }

/* Flat timeline variant (no progress line/dot) */
.timeline--flat .xp-item { padding: 18px; }
.timeline--flat .xp-item::before,
.timeline--flat .xp-item::after { display: none; content: none; }

/* Footer */
.site-footer { border-top: 1px solid var(--outline); padding: 18px 0; color: var(--muted); }
.site-footer .container { display: flex; align-items: center; gap: 10px; flex-wrap: wrap; }
.tiny { font-size: 14px; color: var(--muted); }
.sep { opacity: 0.6; }

/* Reveal on scroll */
.reveal { opacity: 0; transform: translateY(10px); transition: opacity 400ms ease, transform 400ms ease; }
.reveal.in { opacity: 1; transform: translateY(0); }

/* Focus styles */
:focus-visible { outline: 2px solid color-mix(in srgb, var(--brand-2) 70%, var(--brand-1) 30%); outline-offset: 2px; border-radius: 8px; }

/* Reduced motion */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation: none !important; transition: none !important; }
}