/* Nash Deen · Data Analyst Portfolio · shared design system */
:root {
  --bg: #05050a;
  --bg-2: #0a0a12;
  --surface: #101016;
  --surface-2: #14141c;
  --ink: #f5f5f7;
  --ink-2: #a9a9b6;
  --ink-3: #6f6f7c;
  --hairline: rgba(255, 255, 255, 0.08);
  --hairline-2: rgba(255, 255, 255, 0.14);
  --grid: #26262e;
  --accent: #3987e5;
  --accent-2: #8b7cf6;
  --s1: #3987e5; --s2: #d95926; --s3: #199e70; --s4: #c98500; --s5: #d55181;
  --good: #0ca30c; --warning: #fab219; --serious: #ec835a; --critical: #d03b3b;
  --ease: cubic-bezier(0.32, 0.72, 0, 1);
  --font-display: 'Clash Display', 'Avenir Next', sans-serif;
  --font-body: 'Satoshi', -apple-system, 'Segoe UI', sans-serif;
}
* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  background: var(--bg);
  color: var(--ink);
  font-family: var(--font-body);
  font-size: 17px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
::selection { background: rgba(57, 135, 229, 0.35); }
img, svg, canvas, video { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }

/* film grain */
.grain {
  position: fixed; inset: 0; z-index: 60; pointer-events: none; opacity: 0.05;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='140' height='140'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='2'/%3E%3C/filter%3E%3Crect width='140' height='140' filter='url(%23n)' opacity='0.55'/%3E%3C/svg%3E");
}

/* ---------- island nav ---------- */
.nav {
  position: fixed; top: 0; left: 0; right: 0; z-index: 100;
  display: flex; justify-content: center; padding: 1.4rem 1rem 0;
  pointer-events: none;
}
.nav-pill {
  pointer-events: auto;
  display: flex; align-items: center; gap: 1.75rem;
  background: rgba(10, 10, 18, 0.55);
  backdrop-filter: blur(20px); -webkit-backdrop-filter: blur(20px);
  border: 1px solid var(--hairline);
  border-radius: 999px;
  padding: 0.55rem 0.65rem 0.55rem 1.35rem;
  box-shadow: 0 20px 50px -20px rgba(0, 0, 0, 0.8), inset 0 1px 0 rgba(255, 255, 255, 0.06);
  transition: transform 0.7s var(--ease), background 0.7s var(--ease);
}
.nav-brand { font-family: var(--font-display); font-weight: 600; font-size: 1.02rem; letter-spacing: 0.01em; white-space: nowrap; }
.nav-brand em { font-style: normal; color: var(--accent); }
.nav-links { display: flex; gap: 1.4rem; align-items: center; }
.nav-links a { font-size: 0.86rem; font-weight: 500; color: var(--ink-2); transition: color 0.4s var(--ease); white-space: nowrap; }
.nav-links a:hover { color: var(--ink); }
.nav-cta {
  display: inline-flex; align-items: center; gap: 0.5rem;
  background: var(--ink); color: #0b0b10 !important;
  border-radius: 999px; padding: 0.5rem 0.6rem 0.5rem 1.05rem;
  font-size: 0.85rem; font-weight: 600;
  transition: transform 0.5s var(--ease);
}
.nav-cta:active { transform: scale(0.97); }
.nav-cta .dot {
  width: 1.55rem; height: 1.55rem; border-radius: 999px;
  background: rgba(0, 0, 0, 0.1); display: inline-flex; align-items: center; justify-content: center;
  font-size: 0.8rem; transition: transform 0.5s var(--ease);
}
.nav-cta:hover .dot { transform: translate(2px, -1px) scale(1.06); }
.nav-burger { display: none; }

/* mobile menu overlay */
.menu-overlay {
  position: fixed; inset: 0; z-index: 90;
  background: rgba(5, 5, 10, 0.88);
  backdrop-filter: blur(28px); -webkit-backdrop-filter: blur(28px);
  display: flex; flex-direction: column; justify-content: center; padding: 2rem;
  opacity: 0; visibility: hidden; transition: opacity 0.6s var(--ease), visibility 0.6s;
}
.menu-overlay.open { opacity: 1; visibility: visible; }
.menu-overlay a {
  font-family: var(--font-display); font-weight: 600;
  font-size: clamp(2rem, 8vw, 3.2rem); padding: 0.55rem 0; color: var(--ink);
  transform: translateY(2.5rem); opacity: 0; transition: transform 0.8s var(--ease), opacity 0.8s var(--ease);
}
.menu-overlay.open a { transform: translateY(0); opacity: 1; }
.menu-overlay.open a:nth-child(2) { transition-delay: 0.06s; }
.menu-overlay.open a:nth-child(3) { transition-delay: 0.12s; }
.menu-overlay.open a:nth-child(4) { transition-delay: 0.18s; }
.menu-overlay.open a:nth-child(5) { transition-delay: 0.24s; }
.menu-overlay .menu-note { margin-top: 2.4rem; color: var(--ink-3); font-size: 0.9rem; transition-delay: 0.3s; }

/* ---------- layout primitives ---------- */
.wrap { width: min(1180px, 100% - 3rem); margin-inline: auto; }
section { padding: 7.5rem 0; position: relative; overflow-x: clip; scroll-margin-top: 5.5rem; }
.eyebrow {
  display: inline-flex; align-items: center; gap: 0.5rem;
  border: 1px solid var(--hairline-2); border-radius: 999px;
  padding: 0.32rem 0.85rem; font-size: 0.66rem; font-weight: 600;
  letter-spacing: 0.22em; text-transform: uppercase; color: var(--ink-2);
  margin-bottom: 1.5rem;
}
.eyebrow::before { content: ''; width: 6px; height: 6px; border-radius: 99px; background: var(--accent); box-shadow: 0 0 12px var(--accent); }
h1, h2, h3 { font-family: var(--font-display); font-weight: 600; line-height: 1.06; letter-spacing: -0.015em; }
h2 { font-size: clamp(2.1rem, 5vw, 3.4rem); margin-bottom: 1.1rem; }
h3 { font-size: 1.35rem; line-height: 1.25; }
.lede { color: var(--ink-2); font-size: 1.08rem; max-width: 58ch; }

/* double-bezel card */
.shell {
  background: rgba(255, 255, 255, 0.035);
  border: 1px solid var(--hairline);
  border-radius: 1.6rem;
  padding: 0.45rem;
}
.core {
  background: var(--surface);
  border: 1px solid rgba(255, 255, 255, 0.05);
  border-radius: 1.18rem;
  box-shadow: inset 0 1px 1px rgba(255, 255, 255, 0.05);
  padding: 1.8rem;
  height: 100%;
}

/* buttons */
.btn {
  display: inline-flex; align-items: center; gap: 0.7rem;
  border-radius: 999px; padding: 0.85rem 0.85rem 0.85rem 1.6rem;
  font-weight: 600; font-size: 0.97rem; cursor: pointer; border: 0;
  font-family: var(--font-body);
  transition: transform 0.5s var(--ease), box-shadow 0.5s var(--ease), background 0.5s var(--ease);
}
.btn:active { transform: scale(0.97); }
.btn .dot {
  width: 2rem; height: 2rem; border-radius: 999px;
  display: inline-flex; align-items: center; justify-content: center;
  transition: transform 0.5s var(--ease);
}
.btn:hover .dot { transform: translate(3px, -2px) scale(1.08); }
.btn-light { background: var(--ink); color: #0b0b10; }
.btn-light .dot { background: rgba(0, 0, 0, 0.1); }
.btn-light:hover { box-shadow: 0 18px 45px -18px rgba(245, 245, 247, 0.4); }
.btn-ghost { background: rgba(255, 255, 255, 0.05); color: var(--ink); border: 1px solid var(--hairline-2); }
.btn-ghost .dot { background: rgba(255, 255, 255, 0.08); }

/* reveal choreography */
.rv { opacity: 0; transform: translateY(3.2rem); filter: blur(10px); transition: opacity 0.9s var(--ease), transform 0.9s var(--ease), filter 0.9s var(--ease); }
.rv.in { opacity: 1; transform: translateY(0); filter: blur(0); }
.rv-d1 { transition-delay: 0.08s; } .rv-d2 { transition-delay: 0.16s; }
.rv-d3 { transition-delay: 0.24s; } .rv-d4 { transition-delay: 0.32s; }
@media (prefers-reduced-motion: reduce) {
  .rv { opacity: 1; transform: none; filter: none; transition: none; }
  html { scroll-behavior: auto; }
}

/* mesh glow orbs */
.orb { position: absolute; border-radius: 999px; filter: blur(90px); pointer-events: none; opacity: 0.5; }

/* ---------- chart chrome (dataviz spec, dark) ---------- */
.viz-root { color-scheme: dark; }
.chart-card .core { padding: 1.4rem 1.5rem 1.2rem; }
.chart-title { font-size: 0.95rem; font-weight: 700; color: var(--ink); letter-spacing: 0; font-family: var(--font-body); }
.chart-sub { font-size: 0.8rem; color: var(--ink-3); margin-top: 0.15rem; }
.chart-box { margin-top: 1rem; position: relative; }
.chart-box svg { width: 100%; height: auto; overflow: visible; }
.viz-tip {
  position: fixed; z-index: 120; pointer-events: none;
  background: #1b1b24; border: 1px solid var(--hairline-2); border-radius: 0.7rem;
  padding: 0.5rem 0.75rem; font-size: 0.8rem; line-height: 1.5; color: var(--ink);
  box-shadow: 0 16px 40px -12px rgba(0, 0, 0, 0.8);
  opacity: 0; transform: translateY(4px); transition: opacity 0.18s ease-out, transform 0.18s ease-out;
  max-width: 260px;
}
.viz-tip.show { opacity: 1; transform: translateY(0); }
.viz-tip .t-label { color: var(--ink-2); font-size: 0.72rem; }
.legend { display: flex; flex-wrap: wrap; gap: 0.9rem 1.3rem; margin-top: 0.9rem; }
.legend span { display: inline-flex; align-items: center; gap: 0.45rem; font-size: 0.78rem; color: var(--ink-2); }
.legend i { width: 10px; height: 10px; border-radius: 3px; display: inline-block; }

/* KPI tiles */
.kpis { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1rem; }
.kpi .core { padding: 1.3rem 1.5rem; }
.kpi-label { font-size: 0.72rem; letter-spacing: 0.14em; text-transform: uppercase; color: var(--ink-3); font-weight: 600; }
.kpi-value { font-family: var(--font-display); font-weight: 600; font-size: clamp(1.7rem, 3vw, 2.3rem); margin-top: 0.35rem; line-height: 1.1; }
.kpi-delta { font-size: 0.8rem; margin-top: 0.3rem; font-weight: 500; }
.kpi-delta.up { color: var(--good); } .kpi-delta.down { color: var(--critical); }
.kpi-delta.neutral { color: var(--ink-3); }

/* dashboard filters */
.filters { display: flex; flex-wrap: wrap; gap: 0.6rem; align-items: center; margin: 2rem 0 1.4rem; }
.filters .f-label { font-size: 0.78rem; color: var(--ink-3); font-weight: 600; margin-right: 0.2rem; }
.chip {
  border: 1px solid var(--hairline-2); background: rgba(255, 255, 255, 0.04);
  color: var(--ink-2); border-radius: 999px; padding: 0.42rem 1rem;
  font-size: 0.82rem; font-weight: 600; cursor: pointer; font-family: var(--font-body);
  transition: background 0.4s var(--ease), color 0.4s var(--ease), border-color 0.4s var(--ease);
  min-height: 34px;
}
.chip:hover { color: var(--ink); border-color: rgba(255, 255, 255, 0.3); }
.chip.on { background: var(--ink); color: #0b0b10; border-color: var(--ink); }

/* dashboard grid */
.dash-grid { display: grid; grid-template-columns: repeat(12, 1fr); gap: 1rem; margin-top: 1rem; }
.dash-grid > * { min-width: 0; }
.core { min-width: 0; }
.dg-6 { grid-column: span 6; } .dg-4 { grid-column: span 4; }
.dg-8 { grid-column: span 8; } .dg-12 { grid-column: span 12; }

/* data table */
.tbl { width: 100%; border-collapse: collapse; font-size: 0.85rem; }
.tbl th { text-align: left; color: var(--ink-3); font-weight: 600; font-size: 0.72rem; letter-spacing: 0.1em; text-transform: uppercase; padding: 0.6rem 0.8rem; border-bottom: 1px solid var(--hairline); white-space: nowrap; }
.tbl td { padding: 0.6rem 0.8rem; border-bottom: 1px solid rgba(255, 255, 255, 0.04); color: var(--ink-2); font-variant-numeric: tabular-nums; white-space: nowrap; }
.tbl td:first-child { color: var(--ink); }
.tbl-scroll { overflow-x: auto; -webkit-overflow-scrolling: touch; }
.pill-flag { display: inline-flex; align-items: center; gap: 0.35rem; border-radius: 999px; padding: 0.15rem 0.6rem; font-size: 0.72rem; font-weight: 600; }
.pill-flag.hot { background: rgba(208, 59, 59, 0.14); color: #ff8a8a; }
.pill-flag.warm { background: rgba(250, 178, 25, 0.12); color: #fcc95e; }

/* footer */
footer { border-top: 1px solid var(--hairline); padding: 3rem 0 3.5rem; color: var(--ink-3); font-size: 0.88rem; }
.foot-row { display: flex; justify-content: space-between; align-items: center; gap: 1rem; flex-wrap: wrap; }
footer a { color: var(--ink-2); transition: color 0.4s var(--ease); }
footer a:hover { color: var(--ink); }

/* ---------- responsive ---------- */
@media (max-width: 1024px) {
  .kpis { grid-template-columns: repeat(2, 1fr); }
  .dg-4, .dg-6, .dg-8 { grid-column: span 12; }
}
@media (max-width: 768px) {
  body { font-size: 16px; }
  section { padding: 4.8rem 0; }
  .wrap { width: min(1180px, 100% - 2.2rem); }
  .nav-links { display: none; }
  .nav-pill { gap: 0.9rem; padding: 0.5rem 0.55rem 0.5rem 1.15rem; }
  .nav-burger {
    display: inline-flex; flex-direction: column; justify-content: center; gap: 5px;
    width: 2.5rem; height: 2.5rem; border-radius: 999px; border: 1px solid var(--hairline-2);
    background: rgba(255, 255, 255, 0.05); cursor: pointer; align-items: center;
  }
  .nav-burger span { display: block; width: 16px; height: 1.6px; background: var(--ink); transition: transform 0.45s var(--ease), opacity 0.3s; }
  .nav-burger.open span:nth-child(1) { transform: translateY(3.3px) rotate(45deg); }
  .nav-burger.open span:nth-child(2) { transform: translateY(-3.3px) rotate(-45deg); }
  .kpis { grid-template-columns: repeat(2, 1fr); gap: 0.7rem; }
  .kpi .core { padding: 1rem 1.1rem; }
  .core { padding: 1.35rem; }
  .filters { gap: 0.45rem; }
  .chip { padding: 0.4rem 0.85rem; font-size: 0.78rem; }
}
@media (max-width: 420px) {
  .kpis { grid-template-columns: 1fr 1fr; }
}