/*
  Portfolio Stylesheet
  - Mobile-first, responsive
  - Accessible focus states
  - Dark mode via prefers-color-scheme
*/

/* Design tokens */
:root {
  --bg: #0a0a0a;
  --surface: #0f0f0f;
  --card: #141414;
  --text: #f5f5f5;
  --muted: #c2c2c2;
  --primary: #ffd60a;
  --primary-600: #f4c10d;
  --accent: #ffb703;
  --border: #252525;

  --radius: 12px;
  --radius-sm: 8px;
  --shadow-1: 0 1px 2px rgba(0,0,0,0.1), 0 4px 12px rgba(0,0,0,0.2);
  --shadow-2: 0 2px 6px rgba(0,0,0,0.15), 0 10px 24px rgba(0,0,0,0.25);

  --container: 1120px;
  --space-1: 4px;
  --space-2: 8px;
  --space-3: 12px;
  --space-4: 16px;
  --space-5: 20px;
  --space-6: 24px;
  --space-8: 32px;
  --space-10: 40px;
  --space-12: 48px;
  --space-16: 64px;
  --space-20: 80px;
}

@media (prefers-color-scheme: light) {
  :root {
    /* Cream light theme with same yellow accents */
    --bg: #faf7ef;         /* cream */
    --surface: #f6f2e8;    /* soft cream surface */
    --card: #ffffff;       /* white cards */
    --text: #1a1a1a;       /* near-black text */
    --muted: #5c5f6a;      /* muted text */
    --primary: #ffd60a;    /* yellow */
    --primary-600: #f4c10d;/* deeper yellow */
    --accent: #ffb703;     /* orange accent */
    --border: #ebe4d7;     /* soft border */
  }

  /* Softer ambient glow on light background */
  body {
    background: radial-gradient(1200px 600px at 10% -10%, rgba(255,214,10,0.08), transparent 55%),
                radial-gradient(1000px 600px at 100% 10%, rgba(255,183,3,0.05), transparent 55%),
                var(--bg);
  }

  .avatar {
    background:
      radial-gradient(60% 60% at 70% 30%, rgba(255,214,10,0.35), transparent 60%),
      radial-gradient(50% 50% at 20% 80%, rgba(255,183,3,0.25), transparent 60%),
      linear-gradient(135deg, color-mix(in srgb, var(--card), transparent 0%), color-mix(in srgb, var(--surface), transparent 0%));
  }

  .about-media {
    background:
      radial-gradient(40% 40% at 80% 10%, rgba(255,214,10,0.18), transparent 60%),
      radial-gradient(40% 40% at 10% 90%, rgba(255,183,3,0.14), transparent 60%),
      linear-gradient(180deg, color-mix(in srgb, var(--card), transparent 0%), color-mix(in srgb, var(--surface), transparent 0%));
  }

  .card-thumb {
    background:
      radial-gradient(50% 50% at 20% 20%, rgba(255,214,10,0.16), transparent 60%),
      radial-gradient(50% 50% at 80% 80%, rgba(255,183,3,0.12), transparent 60%),
      linear-gradient(180deg, color-mix(in srgb, var(--surface), transparent 0%), color-mix(in srgb, var(--card), transparent 0%));
  }
}

/* Reset */
* { box-sizing: border-box; }
html, body { height: 100%; }
body {
  margin: 0;
  font-family: 'Inter', system-ui, -apple-system, Segoe UI, Roboto, Arial, "Apple Color Emoji", "Segoe UI Emoji";
  color: var(--text);
  background: radial-gradient(1200px 600px at 10% -10%, rgba(255,214,10,0.18), transparent 50%),
              radial-gradient(1000px 600px at 100% 10%, rgba(255,183,3,0.12), transparent 50%),
              var(--bg);
  line-height: 1.6;
}

img, svg, video { display: block; max-width: 100%; }
button, input, textarea, select { font: inherit; color: inherit; }
a { color: inherit; text-decoration: none; }

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

.section { padding: var(--space-20) 0; }
.section.alt { background: linear-gradient(180deg, rgba(255,255,255,0.02), rgba(255,255,255,0)); }

h1, h2, h3 { line-height: 1.2; margin: 0 0 var(--space-4); }
h1 { font-size: clamp(2rem, 6vw, 3rem); font-weight: 800; }
h2 { font-size: clamp(1.5rem, 3.5vw, 2rem); font-weight: 700; }
h3 { font-size: clamp(1.125rem, 2.5vw, 1.25rem); font-weight: 700; }
p { margin: 0 0 var(--space-4); color: var(--muted); }

/* Accessibility helpers */
.sr-only {
  position: absolute;
  width: 1px; height: 1px;
  padding: 0; margin: -1px;
  overflow: hidden; clip: rect(0,0,0,0);
  border: 0;
}
.skip-link {
  position: absolute; left: 1rem; top: -40px; z-index: 1000;
  padding: 8px 12px; background: var(--card); color: var(--text);
  border: 1px solid var(--border); border-radius: 6px; box-shadow: var(--shadow-1);
}
.skip-link:focus { top: 1rem; }

/* Header */
.site-header {
  position: sticky; top: 0; z-index: 50;
  backdrop-filter: saturate(150%) blur(10px);
  background: color-mix(in srgb, var(--bg), transparent 30%);
  border-bottom: 1px solid var(--border);
}
.header-inner { display: flex; align-items: center; justify-content: space-between; padding: 0.75rem 0; }
.brand { display: inline-flex; align-items: center; gap: 10px; font-weight: 700; }
.brand-mark { color: var(--accent); }
.brand-text { letter-spacing: 0.2px; }

.site-nav { position: relative; }
.nav-toggle { display: none; background: transparent; border: 1px solid var(--border); padding: 6px 10px; border-radius: 8px; }
.nav-list { display: flex; gap: 1rem; list-style: none; margin: 0; padding: 0; }
.nav-list a { display: block; padding: 8px 12px; border-radius: 8px; color: var(--muted); }
.nav-list a:hover, .nav-list a:focus { color: var(--text); background: color-mix(in srgb, var(--card), transparent 60%); }

@media (max-width: 820px) {
  .nav-toggle { display: inline-flex; align-items: center; }
  .nav-list { position: absolute; right: 0; top: calc(100% + 10px); background: var(--card); border: 1px solid var(--border); border-radius: var(--radius); box-shadow: var(--shadow-2); padding: 8px; display: none; flex-direction: column; min-width: 200px; }
  .nav-list.open { display: flex; }
}

/* Hero */
.hero { padding-top: var(--space-20); padding-bottom: var(--space-20); }
.hero-grid { display: grid; grid-template-columns: 1.2fr 0.8fr; gap: var(--space-12); align-items: center; }
.eyebrow { color: var(--primary); font-weight: 600; letter-spacing: 0.08em; text-transform: uppercase; margin-bottom: var(--space-2); }
.headline { margin-bottom: var(--space-2); }
.subhead { color: var(--text); font-weight: 600; margin-bottom: var(--space-3); }
.lede { max-width: 60ch; }
.cta-row { display: flex; gap: 10px; flex-wrap: wrap; margin-top: var(--space-6); }
.socials { display: flex; gap: 14px; list-style: none; padding: 0; margin: var(--space-6) 0 0; }
.socials a { color: var(--muted); border-bottom: 1px dashed transparent; }
.socials a:hover { color: var(--text); border-bottom-color: var(--muted); }

.hero-media { display: grid; place-items: center; }
.avatar {
  width: clamp(180px, 30vw, 280px);
  aspect-ratio: 1;
  border-radius: 24px;
  background:
    radial-gradient(60% 60% at 70% 30%, rgba(255,214,10,0.55), transparent 60%),
    radial-gradient(50% 50% at 20% 80%, rgba(255,183,3,0.45), transparent 60%),
    linear-gradient(135deg, color-mix(in srgb, var(--card), transparent 0%), color-mix(in srgb, var(--surface), transparent 0%));
  box-shadow: inset 0 0 0 1px var(--border), var(--shadow-2);
}

@media (max-width: 900px) {
  .hero-grid { grid-template-columns: 1fr; }
}

/* About */
.cols-2 { display: grid; grid-template-columns: 1.1fr 0.9fr; gap: var(--space-12); align-items: start; }
@media (max-width: 900px) { .cols-2 { grid-template-columns: 1fr; } }
.key-points { margin: var(--space-6) 0 0; padding: 0 0 0 1rem; color: var(--muted); }
.about-card { position: relative; }
.about-media { height: 280px; border-radius: var(--radius); background:
  radial-gradient(40% 40% at 80% 10%, rgba(255,214,10,0.35), transparent 60%),
  radial-gradient(40% 40% at 10% 90%, rgba(255,183,3,0.35), transparent 60%),
  linear-gradient(180deg, color-mix(in srgb, var(--card), transparent 0%), color-mix(in srgb, var(--surface), transparent 0%));
  box-shadow: inset 0 0 0 1px var(--border), var(--shadow-2);
}

/* Chips */
.chip-list { display: flex; flex-wrap: wrap; gap: 10px; list-style: none; padding: 0; margin: var(--space-6) 0 0; }
.chip {
  --chip-bg: color-mix(in srgb, var(--card), transparent 30%);
  --chip-brd: var(--border);
  display: inline-flex; align-items: center; gap: 8px;
  padding: 8px 12px; border-radius: 999px; background: var(--chip-bg); border: 1px solid var(--chip-brd);
}

/* Buttons */
.btn { display: inline-flex; align-items: center; justify-content: center; gap: 8px; padding: 10px 14px; border-radius: 10px; border: 1px solid var(--border); background: var(--card); color: var(--text); text-decoration: none; box-shadow: var(--shadow-1); transition: transform 0.06s ease, box-shadow 0.2s ease, background 0.2s ease, border-color 0.2s ease; }
.btn:hover { transform: translateY(-1px); box-shadow: var(--shadow-2); }
.btn:active { transform: translateY(0); }
.btn-ghost { background: transparent; }
.btn-primary { background: linear-gradient(180deg, var(--primary) 0%, var(--primary-600) 100%); border-color: color-mix(in srgb, var(--primary), black 20%); color: #000; }
.btn-sm { padding: 8px 10px; border-radius: 8px; }

/* Cards */
.projects-grid { display: grid; grid-template-columns: repeat(12, 1fr); gap: var(--space-6); margin-top: var(--space-6); }
.projects-grid .card { grid-column: span 12; }
@media (min-width: 700px) { .projects-grid .card { grid-column: span 6; } }
@media (min-width: 1024px) { .projects-grid .card { grid-column: span 4; } }

.card { background: var(--card); border: 1px solid var(--border); border-radius: var(--radius); overflow: clip; box-shadow: var(--shadow-1); display: grid; grid-template-rows: auto 1fr; }
.card-thumb { height: 140px; background:
  radial-gradient(50% 50% at 20% 20%, rgba(255,214,10,0.35), transparent 60%),
  radial-gradient(50% 50% at 80% 80%, rgba(255,183,3,0.35), transparent 60%),
  linear-gradient(180deg, color-mix(in srgb, var(--surface), transparent 0%), color-mix(in srgb, var(--card), transparent 0%));
  border-bottom: 1px solid var(--border);
}
.card-body { padding: var(--space-5); }
.card-title { margin-bottom: var(--space-2); }
.card-text { margin-bottom: var(--space-4); }
.tag-list { display: flex; flex-wrap: wrap; gap: 8px; list-style: none; padding: 0; margin: 0 0 var(--space-4); }
.tag-list li { font-size: 12px; color: var(--muted); border: 1px dashed var(--border); padding: 6px 8px; border-radius: 999px; }
.card-actions { display: flex; gap: 8px; }

/* Contact */
.contact-list { list-style: none; padding: 0; margin: var(--space-6) 0 0; display: grid; gap: 10px; }
.contact-label { display: block; font-size: 12px; text-transform: uppercase; letter-spacing: .08em; color: var(--muted); }
.contact-form { background: var(--card); border: 1px solid var(--border); border-radius: var(--radius); padding: var(--space-6); box-shadow: var(--shadow-1); }
.form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: var(--space-4); }
.field { display: grid; gap: 8px; }
.field-full { grid-column: 1 / -1; }
.field input, .field textarea {
  width: 100%;
  padding: 12px 14px;
  border-radius: 10px;
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--text);
  outline: none;
}
.field input:focus, .field textarea:focus { border-color: color-mix(in srgb, var(--primary), white 20%); box-shadow: 0 0 0 3px color-mix(in srgb, var(--primary), transparent 80%); }
@media (max-width: 720px) { .form-grid { grid-template-columns: 1fr; } }

/* Footer */
.site-footer { border-top: 1px solid var(--border); margin-top: var(--space-20); padding: var(--space-10) 0; }
.footer-inner { display: flex; align-items: center; justify-content: space-between; gap: 1rem; }
.top-link { color: var(--muted); }
.top-link:hover { color: var(--text); }

/* Smooth scroll */
html { scroll-behavior: smooth; }

/* Selection */
::selection { background: color-mix(in srgb, var(--primary), transparent 60%); color: #000; }