/* ==========================================================================
   SAHAS NAGAR — DESIGN SYSTEM
   Editorial engineering portfolio. Light-first, restrained dark mode.
   ========================================================================== */

/* --------------------------------------------------------------------------
   1. TOKENS
   -------------------------------------------------------------------------- */
:root {
  /* Color — light (default) */
  --bg: #f7f6f3;
  --bg-sunken: #f1efe9;
  --surface: #ffffff;
  --card: #ffffff;
  --card-hover: #fdfcfb;
  --ink: #111a2c;
  --ink-2: #3c4761;
  --ink-3: #6d7791;
  --ink-4: #98a0b3;
  --line: #e4e1da;
  --line-2: #d3cfc5;
  --accent: #4f46e5;
  --accent-hover: #4338ca;
  --accent-contrast: #ffffff;
  --accent-soft: rgba(79, 70, 229, 0.07);
  --accent-soft-2: rgba(79, 70, 229, 0.13);
  --cyan: #0e7490;
  --cyan-soft: rgba(14, 116, 144, 0.08);
  --good: #0f766e;
  --good-soft: rgba(15, 118, 110, 0.1);
  --shadow-1: 0 1px 2px rgba(17, 26, 44, 0.05);
  --shadow-2: 0 6px 24px rgba(17, 26, 44, 0.07);
  --shadow-3: 0 20px 48px rgba(17, 26, 44, 0.1);

  /* Typography */
  --font: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  --mono: "JetBrains Mono", ui-monospace, "SF Mono", Menlo, Consolas, monospace;

  /* Metrics */
  --container: 1120px;
  --container-narrow: 760px;
  --nav-h: 60px;
  --r-sm: 8px;
  --r-md: 12px;
  --r-lg: 16px;
  --r-full: 999px;

  /* Motion */
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
  --dur-1: 160ms;
  --dur-2: 280ms;
  --dur-3: 520ms;

  color-scheme: light;
}

[data-theme="dark"] {
  --bg: #0e1116;
  --bg-sunken: #0a0d12;
  --surface: #151a22;
  --card: #161b24;
  --card-hover: #1a202a;
  --ink: #e9ebf1;
  --ink-2: #b4bacc;
  --ink-3: #8790a5;
  --ink-4: #626b80;
  --line: rgba(255, 255, 255, 0.09);
  --line-2: rgba(255, 255, 255, 0.16);
  --accent: #818cf8;
  --accent-hover: #a5b0ff;
  --accent-contrast: #10131c;
  --accent-soft: rgba(129, 140, 248, 0.1);
  --accent-soft-2: rgba(129, 140, 248, 0.18);
  --cyan: #5ecfe0;
  --cyan-soft: rgba(94, 207, 224, 0.1);
  --good: #5eead4;
  --good-soft: rgba(94, 234, 212, 0.1);
  --shadow-1: 0 1px 2px rgba(0, 0, 0, 0.4);
  --shadow-2: 0 6px 24px rgba(0, 0, 0, 0.45);
  --shadow-3: 0 20px 48px rgba(0, 0, 0, 0.55);

  color-scheme: dark;
}

/* --------------------------------------------------------------------------
   2. RESET & BASE
   -------------------------------------------------------------------------- */
*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--nav-h) + 16px);
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font);
  font-size: 15.5px;
  line-height: 1.65;
  color: var(--ink);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
  transition: background var(--dur-2) var(--ease), color var(--dur-2) var(--ease);
}

img,
svg {
  display: block;
  max-width: 100%;
}

a {
  color: inherit;
  text-decoration: none;
}

button {
  font: inherit;
  color: inherit;
  background: none;
  border: 0;
  cursor: pointer;
}

ul,
ol {
  list-style: none;
}

::selection {
  background: var(--accent-soft-2);
  color: var(--ink);
}

:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
  border-radius: 4px;
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}

/* --------------------------------------------------------------------------
   3. LAYOUT PRIMITIVES
   -------------------------------------------------------------------------- */
.container {
  width: 100%;
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 24px;
}

.section {
  padding: 88px 0;
  border-top: 1px solid var(--line);
  position: relative;
}

.section--tight {
  padding: 64px 0;
}

.section-head {
  max-width: 640px;
  margin-bottom: 44px;
}

.eyebrow {
  font-family: var(--mono);
  font-size: 11.5px;
  font-weight: 500;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--accent);
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 14px;
}

.eyebrow::before {
  content: "";
  width: 22px;
  height: 1px;
  background: var(--accent);
  opacity: 0.6;
}

.section-title {
  font-size: clamp(1.6rem, 1.2rem + 1.6vw, 2.1rem);
  font-weight: 650;
  letter-spacing: -0.02em;
  line-height: 1.2;
  color: var(--ink);
  margin-bottom: 12px;
}

.section-desc {
  color: var(--ink-2);
  font-size: 1rem;
  max-width: 56ch;
}

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

/* --------------------------------------------------------------------------
   4. NAVIGATION
   -------------------------------------------------------------------------- */
.skip-link {
  position: absolute;
  left: 16px;
  top: -60px;
  z-index: 200;
  background: var(--accent);
  color: var(--accent-contrast);
  padding: 10px 16px;
  border-radius: var(--r-sm);
  font-size: 13.5px;
  font-weight: 600;
  transition: top var(--dur-1) var(--ease);
}

.skip-link:focus {
  top: 12px;
}

.nav {
  position: sticky;
  top: 0;
  z-index: 100;
  height: var(--nav-h);
  background: color-mix(in srgb, var(--bg) 82%, transparent);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid transparent;
  transition: border-color var(--dur-2) var(--ease), background var(--dur-2) var(--ease);
}

.nav.is-scrolled {
  border-bottom-color: var(--line);
}

.nav-inner {
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.nav-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 650;
  letter-spacing: -0.01em;
  font-size: 15px;
  flex-shrink: 0;
}

.nav-mark {
  width: 30px;
  height: 30px;
  border-radius: 8px;
  background: var(--ink);
  color: var(--bg);
  display: grid;
  place-items: center;
  font-family: var(--mono);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 4px;
}

.nav-links a {
  position: relative;
  padding: 7px 11px;
  font-size: 13.5px;
  font-weight: 500;
  color: var(--ink-2);
  border-radius: var(--r-sm);
  transition: color var(--dur-1) var(--ease), background var(--dur-1) var(--ease);
}

.nav-links a:hover {
  color: var(--ink);
  background: var(--accent-soft);
}

.nav-links a.active {
  color: var(--accent);
}

.nav-links a.active::after {
  content: "";
  position: absolute;
  left: 11px;
  right: 11px;
  bottom: 2px;
  height: 1.5px;
  background: var(--accent);
  border-radius: 2px;
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-shrink: 0;
}

.icon-btn {
  width: 36px;
  height: 36px;
  display: grid;
  place-items: center;
  border-radius: var(--r-sm);
  color: var(--ink-2);
  border: 1px solid transparent;
  transition: color var(--dur-1) var(--ease), border-color var(--dur-1) var(--ease),
    background var(--dur-1) var(--ease);
}

.icon-btn:hover {
  color: var(--ink);
  background: var(--surface);
  border-color: var(--line);
}

.icon-btn svg {
  width: 17px;
  height: 17px;
}

.nav .icon-sun,
[data-theme="dark"] .nav .icon-moon {
  display: none;
}

[data-theme="dark"] .nav .icon-sun {
  display: block;
}

.nav-toggle {
  display: none;
}

.mobile-panel {
  display: none;
  position: fixed;
  inset: var(--nav-h) 0 auto 0;
  z-index: 99;
  background: var(--bg);
  border-bottom: 1px solid var(--line);
  padding: 14px 24px 22px;
  transform: translateY(-8px);
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--dur-2) var(--ease), transform var(--dur-2) var(--ease);
}

.mobile-panel.open {
  opacity: 1;
  transform: none;
  pointer-events: auto;
}

.mobile-panel a {
  display: block;
  padding: 12px 4px;
  font-size: 15px;
  font-weight: 500;
  color: var(--ink-2);
  border-bottom: 1px solid var(--line);
}

.mobile-panel a:hover,
.mobile-panel a:focus-visible {
  color: var(--accent);
}

.mobile-panel .btn {
  margin-top: 16px;
  width: 100%;
  justify-content: center;
}

/* --------------------------------------------------------------------------
   5. BUTTONS, CHIPS, TAGS, BADGES
   -------------------------------------------------------------------------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 18px;
  font-size: 13.5px;
  font-weight: 550;
  border-radius: var(--r-sm);
  border: 1px solid transparent;
  transition: background var(--dur-1) var(--ease), color var(--dur-1) var(--ease),
    border-color var(--dur-1) var(--ease), transform var(--dur-1) var(--ease);
  white-space: nowrap;
}

.btn svg {
  width: 15px;
  height: 15px;
  flex-shrink: 0;
}

.btn--primary {
  background: var(--accent);
  color: var(--accent-contrast);
}

.btn--primary:hover {
  background: var(--accent-hover);
}

.btn--secondary {
  background: var(--surface);
  color: var(--ink);
  border-color: var(--line-2);
  box-shadow: var(--shadow-1);
}

.btn--secondary:hover {
  border-color: var(--accent);
  color: var(--accent);
}

.btn--ghost {
  color: var(--ink-2);
  padding-left: 8px;
  padding-right: 8px;
}

.btn--ghost:hover {
  color: var(--accent);
}

.btn--sm {
  padding: 7px 13px;
  font-size: 12.5px;
}

.chip {
  padding: 7px 14px;
  font-size: 12.5px;
  font-weight: 500;
  color: var(--ink-2);
  border: 1px solid var(--line-2);
  border-radius: var(--r-full);
  background: var(--surface);
  transition: all var(--dur-1) var(--ease);
}

.chip:hover {
  color: var(--accent);
  border-color: var(--accent);
}

.chip.active {
  background: var(--ink);
  border-color: var(--ink);
  color: var(--bg);
}

.tag {
  display: inline-flex;
  align-items: center;
  padding: 3px 9px;
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.01em;
  color: var(--ink-2);
  background: var(--bg-sunken);
  border: 1px solid var(--line);
  border-radius: 6px;
}

.badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 3px 10px;
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  border-radius: var(--r-full);
  border: 1px solid var(--line-2);
  color: var(--ink-2);
  background: var(--surface);
  white-space: nowrap;
}

.badge--live {
  color: var(--good);
  border-color: color-mix(in srgb, var(--good) 35%, transparent);
  background: var(--good-soft);
}

.badge--current {
  color: var(--accent);
  border-color: color-mix(in srgb, var(--accent) 35%, transparent);
  background: var(--accent-soft);
}

/* --------------------------------------------------------------------------
   6. HERO
   -------------------------------------------------------------------------- */
.hero {
  position: relative;
  padding: 84px 0 72px;
  overflow: hidden;
}

.hero-grid {
  position: absolute;
  inset: 0;
  background-image: linear-gradient(var(--line) 1px, transparent 1px),
    linear-gradient(90deg, var(--line) 1px, transparent 1px);
  background-size: 56px 56px;
  mask-image: radial-gradient(ellipse 80% 70% at 50% 0%, #000 30%, transparent 78%);
  -webkit-mask-image: radial-gradient(ellipse 80% 70% at 50% 0%, #000 30%, transparent 78%);
  opacity: 0.55;
  pointer-events: none;
}

.hero-inner {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1.15fr) minmax(0, 0.85fr);
  gap: 56px;
  align-items: center;
}

.hero-kicker {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  font-family: var(--mono);
  font-size: 11.5px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--ink-2);
  margin-bottom: 22px;
}

.hero-kicker .pulse {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--good);
  box-shadow: 0 0 0 3px var(--good-soft);
}

.hero h1 {
  font-size: clamp(2.4rem, 1.5rem + 3.4vw, 3.6rem);
  font-weight: 700;
  letter-spacing: -0.03em;
  line-height: 1.06;
  margin-bottom: 18px;
}

.hero-role {
  font-size: clamp(1.05rem, 0.95rem + 0.5vw, 1.25rem);
  font-weight: 550;
  color: var(--accent);
  letter-spacing: -0.01em;
  margin-bottom: 16px;
}

.hero-lede {
  color: var(--ink-2);
  font-size: 1.02rem;
  max-width: 54ch;
  margin-bottom: 30px;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 34px;
}

.hero-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 22px;
  font-size: 13px;
  color: var(--ink-3);
}

.hero-meta a {
  color: var(--ink-2);
  font-weight: 500;
  border-bottom: 1px solid var(--line-2);
  transition: color var(--dur-1) var(--ease), border-color var(--dur-1) var(--ease);
}

.hero-meta a:hover {
  color: var(--accent);
  border-color: var(--accent);
}

/* Hero schematic */
.hero-figure {
  position: relative;
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  background: var(--surface);
  padding: 26px 24px 22px;
  box-shadow: var(--shadow-2);
}

.hero-figure figcaption {
  font-family: var(--mono);
  font-size: 10.5px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--ink-4);
  margin-top: 16px;
  display: flex;
  justify-content: space-between;
  gap: 12px;
}

.schematic {
  width: 100%;
  height: auto;
  color: var(--ink-2);
}

.schematic .node-box {
  fill: var(--bg-sunken);
  stroke: var(--line-2);
  stroke-width: 1;
}

.schematic .node-box.accent {
  fill: var(--accent-soft);
  stroke: color-mix(in srgb, var(--accent) 40%, transparent);
}

.schematic .node-label {
  font-family: var(--mono);
  font-size: 10.5px;
  fill: var(--ink);
}

.schematic .node-sub {
  font-family: var(--mono);
  font-size: 8.5px;
  fill: var(--ink-3);
}

.schematic .wire {
  stroke: var(--line-2);
  stroke-width: 1.2;
  fill: none;
}

.schematic .wire.accent {
  stroke: color-mix(in srgb, var(--accent) 55%, transparent);
  stroke-dasharray: 4 4;
}

/* Highlight strip */
.highlights {
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  background: var(--surface);
}

.highlights-inner {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
}

.highlight {
  padding: 22px 20px;
  border-right: 1px solid var(--line);
}

.highlight:last-child {
  border-right: 0;
}

.highlight .hl-value {
  font-size: 1.3rem;
  font-weight: 650;
  letter-spacing: -0.02em;
  color: var(--ink);
  margin-bottom: 2px;
}

.highlight .hl-label {
  font-size: 12.5px;
  color: var(--ink-3);
}

/* --------------------------------------------------------------------------
   7. ABOUT
   -------------------------------------------------------------------------- */
.about-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(0, 0.9fr);
  gap: 56px;
  align-items: start;
}

.about-lede {
  font-size: 1.25rem;
  font-weight: 550;
  letter-spacing: -0.015em;
  line-height: 1.45;
  color: var(--ink);
  margin-bottom: 20px;
}

.about-lede em {
  font-style: normal;
  color: var(--accent);
}

.about-body p {
  color: var(--ink-2);
  margin-bottom: 16px;
}

.about-body p:last-child {
  margin-bottom: 0;
}

.principles {
  display: grid;
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  overflow: hidden;
}

.principle {
  display: grid;
  grid-template-columns: 44px 1fr;
  gap: 14px;
  padding: 18px 20px;
  background: var(--surface);
  transition: background var(--dur-1) var(--ease);
}

.principle:hover {
  background: var(--card-hover);
}

.principle .pn {
  font-family: var(--mono);
  font-size: 11.5px;
  color: var(--accent);
  padding-top: 3px;
}

.principle h4 {
  font-size: 14.5px;
  font-weight: 620;
  margin-bottom: 4px;
  letter-spacing: -0.01em;
}

.principle p {
  font-size: 13.2px;
  color: var(--ink-2);
  line-height: 1.55;
}

/* --------------------------------------------------------------------------
   8. EXPERIENCE
   -------------------------------------------------------------------------- */
.timeline {
  position: relative;
  display: grid;
  gap: 20px;
}

.tl-item {
  position: relative;
  display: grid;
  grid-template-columns: 172px 1fr;
  gap: 28px;
  padding: 26px 28px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  transition: border-color var(--dur-2) var(--ease), box-shadow var(--dur-2) var(--ease),
    transform var(--dur-2) var(--ease);
}

.tl-item:hover {
  border-color: var(--line-2);
  box-shadow: var(--shadow-2);
  transform: translateY(-2px);
}

.tl-item--current {
  border-color: color-mix(in srgb, var(--accent) 30%, var(--line));
}

.tl-side {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.tl-period {
  font-family: var(--mono);
  font-size: 11.5px;
  color: var(--ink-3);
  letter-spacing: 0.02em;
}

.tl-location {
  font-size: 12.5px;
  color: var(--ink-3);
}

.tl-main h3 {
  font-size: 1.05rem;
  font-weight: 650;
  letter-spacing: -0.015em;
  margin-bottom: 2px;
}

.tl-org {
  font-size: 14px;
  font-weight: 550;
  color: var(--accent);
  margin-bottom: 12px;
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
}

.tl-main p {
  color: var(--ink-2);
  font-size: 14.2px;
  margin-bottom: 14px;
}

.tl-main p:last-of-type {
  margin-bottom: 0;
}

.tl-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-top: 14px;
}

/* --------------------------------------------------------------------------
   9. PROJECTS
   -------------------------------------------------------------------------- */
.toolbar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 14px;
  margin-bottom: 30px;
  padding-bottom: 22px;
  border-bottom: 1px solid var(--line);
}

.search {
  position: relative;
  flex: 1 1 240px;
  max-width: 320px;
}

.search svg {
  position: absolute;
  left: 12px;
  top: 50%;
  transform: translateY(-50%);
  width: 15px;
  height: 15px;
  color: var(--ink-4);
  pointer-events: none;
}

.search input {
  width: 100%;
  padding: 9px 12px 9px 36px;
  font: inherit;
  font-size: 13.5px;
  color: var(--ink);
  background: var(--surface);
  border: 1px solid var(--line-2);
  border-radius: var(--r-sm);
  transition: border-color var(--dur-1) var(--ease), box-shadow var(--dur-1) var(--ease);
}

.search input:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-soft);
}

.filters {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.result-meta {
  font-family: var(--mono);
  font-size: 11.5px;
  color: var(--ink-3);
  margin-left: auto;
}

/* Featured project cards */
.feature-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 20px;
}

.pcard {
  display: flex;
  flex-direction: column;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  padding: 24px 24px 20px;
  transition: border-color var(--dur-2) var(--ease), box-shadow var(--dur-2) var(--ease),
    transform var(--dur-2) var(--ease);
}

.pcard:hover {
  border-color: var(--line-2);
  box-shadow: var(--shadow-2);
  transform: translateY(-2px);
}

.pcard[hidden] {
  display: none;
}

.pcard-head {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 12px;
  margin-bottom: 12px;
}

.pcard-index {
  font-family: var(--mono);
  font-size: 11px;
  color: var(--ink-4);
  margin-bottom: 6px;
}

.pcard-name {
  font-size: 1.12rem;
  font-weight: 650;
  letter-spacing: -0.015em;
}

.pcard-cat {
  font-size: 12.5px;
  color: var(--ink-3);
  margin-top: 2px;
}

.pcard-desc {
  color: var(--ink-2);
  font-size: 13.8px;
  margin-bottom: 14px;
  flex-grow: 0;
}

.pcard-stack {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-bottom: 16px;
}

.pcard-links {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: auto;
  padding-top: 14px;
  border-top: 1px solid var(--line);
}

.plink {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 12.8px;
  font-weight: 550;
  color: var(--ink-2);
  transition: color var(--dur-1) var(--ease);
}

.plink svg {
  width: 13.5px;
  height: 13.5px;
}

.plink:hover {
  color: var(--accent);
}

.pcard--flagship {
  grid-column: span 2;
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  gap: 28px;
  padding: 30px;
}

.pcard--flagship .pcard-side {
  border-left: 1px solid var(--line);
  padding-left: 28px;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.case-block h5 {
  font-family: var(--mono);
  font-size: 10.5px;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 5px;
}

.case-block p {
  font-size: 13.4px;
  color: var(--ink-2);
  line-height: 1.55;
}

.no-results {
  display: none;
  text-align: center;
  padding: 56px 20px;
  color: var(--ink-3);
  border: 1px dashed var(--line-2);
  border-radius: var(--r-md);
  margin-top: 8px;
}

.no-results.show {
  display: block;
}

.no-results svg {
  width: 28px;
  height: 28px;
  margin: 0 auto 10px;
  opacity: 0.5;
}

/* Directory grid (projects.html) */
.dir-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
}

.dir-grid .pcard {
  padding: 22px 22px 18px;
}

/* --------------------------------------------------------------------------
   10. SKILLS
   -------------------------------------------------------------------------- */
.skill-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
}

.skill-group {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  padding: 22px 22px 20px;
  transition: border-color var(--dur-2) var(--ease), box-shadow var(--dur-2) var(--ease);
}

.skill-group:hover {
  border-color: var(--line-2);
  box-shadow: var(--shadow-2);
}

.skill-group h3 {
  font-size: 13px;
  font-weight: 650;
  letter-spacing: 0.02em;
  text-transform: uppercase;
  color: var(--ink);
  margin-bottom: 4px;
}

.skill-group .sg-note {
  font-size: 12.2px;
  color: var(--ink-3);
  margin-bottom: 14px;
}

.skill-list {
  display: flex;
  flex-wrap: wrap;
  gap: 7px;
}

.skill-list li {
  font-family: var(--mono);
  font-size: 11.5px;
  padding: 4px 10px;
  border: 1px solid var(--line);
  border-radius: 6px;
  color: var(--ink-2);
  background: var(--bg-sunken);
}

/* --------------------------------------------------------------------------
   11. ACHIEVEMENTS
   -------------------------------------------------------------------------- */
.ach-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
}

.ach-card {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  padding: 22px;
  transition: border-color var(--dur-2) var(--ease), box-shadow var(--dur-2) var(--ease),
    transform var(--dur-2) var(--ease);
}

.ach-card:hover {
  border-color: var(--line-2);
  box-shadow: var(--shadow-2);
  transform: translateY(-2px);
}

.ach-icon {
  width: 34px;
  height: 34px;
  border-radius: 9px;
  display: grid;
  place-items: center;
  background: var(--accent-soft);
  color: var(--accent);
  margin-bottom: 14px;
}

.ach-icon svg {
  width: 16px;
  height: 16px;
}

.ach-card h3 {
  font-size: 14.8px;
  font-weight: 640;
  letter-spacing: -0.01em;
  margin-bottom: 5px;
}

.ach-card p {
  font-size: 13.2px;
  color: var(--ink-2);
  line-height: 1.55;
}

.ach-card a {
  color: var(--accent);
  font-weight: 550;
  font-size: 12.8px;
  border-bottom: 1px solid transparent;
}

.ach-card a:hover {
  border-color: var(--accent);
}

/* --------------------------------------------------------------------------
   12. OPEN SOURCE / GITHUB
   -------------------------------------------------------------------------- */
.gh-panel {
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  background: var(--surface);
  overflow: hidden;
}

.gh-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  border-bottom: 1px solid var(--line);
}

.gh-stat {
  padding: 20px 22px;
  border-right: 1px solid var(--line);
}

.gh-stat:last-child {
  border-right: 0;
}

.gh-stat .num {
  font-size: 1.35rem;
  font-weight: 650;
  letter-spacing: -0.02em;
}

.gh-stat .label {
  font-size: 12.2px;
  color: var(--ink-3);
  margin-top: 1px;
}

.repo-list {
  display: grid;
}

.repo-item {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 6px 18px;
  align-items: center;
  padding: 15px 22px;
  border-bottom: 1px solid var(--line);
  transition: background var(--dur-1) var(--ease);
}

.repo-item:last-child {
  border-bottom: 0;
}

.repo-item:hover {
  background: var(--card-hover);
}

.repo-name {
  display: flex;
  align-items: center;
  gap: 9px;
  font-family: var(--mono);
  font-size: 13px;
  font-weight: 500;
  color: var(--ink);
}

.repo-name:hover {
  color: var(--accent);
}

.lang-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  flex-shrink: 0;
}

.repo-desc {
  grid-column: 1 / -1;
  font-size: 12.8px;
  color: var(--ink-2);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.repo-meta {
  display: flex;
  gap: 14px;
  font-family: var(--mono);
  font-size: 11px;
  color: var(--ink-3);
  white-space: nowrap;
}

.gh-status {
  padding: 26px 22px;
  font-size: 13.2px;
  color: var(--ink-3);
}

.gh-status a {
  color: var(--accent);
  font-weight: 550;
}

/* --------------------------------------------------------------------------
   13. CONTACT
   -------------------------------------------------------------------------- */
.contact-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.2fr) minmax(0, 0.8fr);
  gap: 48px;
  align-items: start;
}

.contact-big {
  font-size: clamp(1.7rem, 1.3rem + 1.6vw, 2.3rem);
  font-weight: 650;
  letter-spacing: -0.025em;
  line-height: 1.18;
  margin-bottom: 14px;
}

.contact-big em {
  font-style: normal;
  color: var(--accent);
}

.contact-sub {
  color: var(--ink-2);
  max-width: 52ch;
  margin-bottom: 28px;
}

.contact-links {
  display: grid;
  gap: 10px;
}

.contact-link {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 15px 18px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  transition: border-color var(--dur-1) var(--ease), transform var(--dur-1) var(--ease),
    box-shadow var(--dur-1) var(--ease);
}

.contact-link:hover {
  border-color: var(--accent);
  transform: translateX(3px);
  box-shadow: var(--shadow-2);
}

.contact-link .cl-label {
  display: block;
  font-family: var(--mono);
  font-size: 10.5px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--ink-4);
  margin-bottom: 2px;
}

.contact-link .cl-value {
  font-size: 14.5px;
  font-weight: 550;
  color: var(--ink);
  word-break: break-all;
}

.contact-link svg {
  width: 15px;
  height: 15px;
  color: var(--ink-4);
  flex-shrink: 0;
}

.contact-link:hover svg {
  color: var(--accent);
}

.avail-card {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  padding: 24px;
}

.avail-status {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 12.8px;
  font-weight: 600;
  color: var(--good);
  margin-bottom: 18px;
}

.avail-status .dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--good);
  box-shadow: 0 0 0 3px var(--good-soft);
}

.avail-row {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  padding: 10px 0;
  border-top: 1px solid var(--line);
  font-size: 13.2px;
}

.avail-row span:first-child {
  color: var(--ink-3);
}

.avail-row span:last-child {
  font-weight: 550;
  text-align: right;
}

/* --------------------------------------------------------------------------
   14. FOOTER
   -------------------------------------------------------------------------- */
.footer {
  border-top: 1px solid var(--line);
  padding: 30px 0;
  background: var(--surface);
}

.footer-inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
}

.footer-left {
  font-size: 13px;
  color: var(--ink-3);
}

.footer-left strong {
  color: var(--ink-2);
  font-weight: 600;
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: 18px;
}

.footer-links a {
  font-size: 13px;
  color: var(--ink-2);
  transition: color var(--dur-1) var(--ease);
}

.footer-links a:hover {
  color: var(--accent);
}

/* Back to top */
.to-top {
  position: fixed;
  right: 22px;
  bottom: 22px;
  z-index: 90;
  width: 40px;
  height: 40px;
  display: grid;
  place-items: center;
  border-radius: 50%;
  background: var(--ink);
  color: var(--bg);
  box-shadow: var(--shadow-3);
  opacity: 0;
  pointer-events: none;
  transform: translateY(8px);
  transition: opacity var(--dur-2) var(--ease), transform var(--dur-2) var(--ease);
}

.to-top.show {
  opacity: 1;
  pointer-events: auto;
  transform: none;
}

.to-top svg {
  width: 16px;
  height: 16px;
}

/* --------------------------------------------------------------------------
   15. PAGE HEADER (projects.html)
   -------------------------------------------------------------------------- */
.page-head {
  padding: 60px 0 44px;
  border-bottom: 1px solid var(--line);
  background: var(--surface);
  position: relative;
  overflow: hidden;
}

.page-head .hero-grid {
  opacity: 0.4;
}

.page-head-inner {
  position: relative;
  max-width: 680px;
}

.page-head h1 {
  font-size: clamp(1.9rem, 1.4rem + 2vw, 2.6rem);
  font-weight: 700;
  letter-spacing: -0.028em;
  line-height: 1.12;
  margin-bottom: 14px;
}

.page-head p {
  color: var(--ink-2);
  margin-bottom: 22px;
}

.breadcrumb {
  display: flex;
  align-items: center;
  gap: 8px;
  font-family: var(--mono);
  font-size: 11.5px;
  color: var(--ink-3);
  margin-bottom: 18px;
}

.breadcrumb a:hover {
  color: var(--accent);
}

/* --------------------------------------------------------------------------
   16. REVEAL ANIMATIONS
   -------------------------------------------------------------------------- */
/* Hidden state applies only when JS is running (html.js) — the page
   stays fully readable if scripts fail to load. */
.js .reveal {
  opacity: 0;
  transform: translateY(14px);
  transition: opacity var(--dur-3) var(--ease), transform var(--dur-3) var(--ease);
}

.js .reveal.in {
  opacity: 1;
  transform: none;
}

.js .reveal-stagger > * {
  opacity: 0;
  transform: translateY(14px);
  transition: opacity var(--dur-3) var(--ease), transform var(--dur-3) var(--ease);
}

.js .reveal-stagger.in > * {
  opacity: 1;
  transform: none;
}

.js .reveal-stagger.in > *:nth-child(2) {
  transition-delay: 60ms;
}
.js .reveal-stagger.in > *:nth-child(3) {
  transition-delay: 120ms;
}
.js .reveal-stagger.in > *:nth-child(4) {
  transition-delay: 180ms;
}
.js .reveal-stagger.in > *:nth-child(5) {
  transition-delay: 240ms;
}
.js .reveal-stagger.in > *:nth-child(6) {
  transition-delay: 300ms;
}
.js .reveal-stagger.in > *:nth-child(7) {
  transition-delay: 360ms;
}
.js .reveal-stagger.in > *:nth-child(8) {
  transition-delay: 420ms;
}

@media (prefers-reduced-motion: reduce) {
    .js .reveal,
    .js .reveal-stagger > * {
      opacity: 1 !important;
      transform: none !important;
      transition: none !important;
    }
  }

/* --------------------------------------------------------------------------
   17. RESPONSIVE
   -------------------------------------------------------------------------- */
@media (max-width: 1024px) {
  .hero-inner {
    grid-template-columns: 1fr;
    gap: 40px;
  }

  .hero-figure {
    max-width: 520px;
  }

  .about-grid,
  .contact-grid {
    grid-template-columns: 1fr;
    gap: 36px;
  }

  .dir-grid,
  .skill-grid,
  .ach-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .highlights-inner {
    grid-template-columns: repeat(2, 1fr);
  }

  .highlight:nth-child(2) {
    border-right: 0;
  }

  .highlight:nth-child(1),
  .highlight:nth-child(2) {
    border-bottom: 1px solid var(--line);
  }
}

@media (max-width: 860px) {
  .nav-links,
  .nav .btn--resume {
    display: none;
  }

  .nav-toggle {
    display: grid;
  }

  .mobile-panel {
    display: block;
  }

  .pcard--flagship {
    grid-column: span 1;
    grid-template-columns: 1fr;
    gap: 20px;
    padding: 24px;
  }

  .pcard--flagship .pcard-side {
    border-left: 0;
    border-top: 1px solid var(--line);
    padding-left: 0;
    padding-top: 18px;
  }

  .feature-grid {
    grid-template-columns: 1fr;
  }

  .tl-item {
    grid-template-columns: 1fr;
    gap: 10px;
    padding: 22px;
  }

  .tl-side {
    flex-direction: row;
    align-items: center;
    gap: 12px;
  }
}

@media (max-width: 640px) {
  body {
    font-size: 15px;
  }

  .section {
    padding: 64px 0;
  }

  .hero {
    padding: 52px 0 48px;
  }

  .dir-grid,
  .skill-grid,
  .ach-grid {
    grid-template-columns: 1fr;
  }

  .gh-stats {
    grid-template-columns: 1fr;
  }

  .gh-stat {
    border-right: 0;
    border-bottom: 1px solid var(--line);
  }

  .gh-stat:last-child {
    border-bottom: 0;
  }

  .repo-item {
    grid-template-columns: 1fr;
  }

  .repo-meta {
    justify-content: flex-start;
  }

  .toolbar {
    flex-direction: column;
    align-items: stretch;
  }

  .search {
    flex: 0 0 auto;
    max-width: none;
    width: 100%;
  }

  .result-meta {
    margin-left: 0;
  }

  .highlights-inner {
    grid-template-columns: 1fr;
  }

  .highlight {
    border-right: 0;
    border-bottom: 1px solid var(--line);
  }

  .highlight:last-child {
    border-bottom: 0;
  }

  .hero-actions .btn {
    flex: 1 1 auto;
    justify-content: center;
  }

  .footer-inner {
    flex-direction: column;
    align-items: flex-start;
  }

  .contact-link .cl-value {
    font-size: 13.5px;
  }
}

@media (max-width: 360px) {
  .container {
    padding: 0 16px;
  }

  .hero-actions {
    flex-direction: column;
    align-items: stretch;
  }
}