/* ===========================================================
   GANESH KUMAR KOIRI — PORTFOLIO
   Design tokens: Royal Blue #2563EB / Sky Blue #3B82F6 /
   Ink Navy #0F172A / Paper White #FFFFFF / Cyan #06B6D4
   Type: Poppins (display+body) / JetBrains Mono (labels/data)
   =========================================================== */

/* ---------- 1. RESET ---------- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
img, svg { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
button { font: inherit; color: inherit; background: none; border: none; cursor: pointer; }
input, textarea { font: inherit; color: inherit; }
ul { list-style: none; }
::selection { background: #2563EB; color: #fff; }

/* ---------- 2. DESIGN TOKENS ---------- */
:root{
  --blue: #2563EB;
  --blue-light: #3B82F6;
  --ink: #0F172A;
  --paper: #FFFFFF;
  --cyan: #06B6D4;

  --gradient-brand: linear-gradient(135deg, var(--blue) 0%, var(--cyan) 100%);
  --gradient-brand-soft: linear-gradient(135deg, rgba(37,99,235,.16), rgba(6,182,212,.16));

  --font-display: 'Poppins', 'Segoe UI', sans-serif;
  --font-mono: 'JetBrains Mono', 'Courier New', monospace;

  --radius-sm: 10px;
  --radius-md: 18px;
  --radius-lg: 28px;
  --radius-pill: 100px;

  --ease: cubic-bezier(.22,1,.36,1);
  --ease-soft: cubic-bezier(.4,0,.2,1);
  --dur-fast: .25s;
  --dur-mid: .5s;
  --dur-slow: .9s;

  --container: 1220px;
  --nav-h: 84px;

  /* dark theme (default) */
  --bg: #0A0F1D;
  --bg-1: #0F172A;
  --bg-2: #131C31;
  --surface: rgba(255,255,255,.045);
  --surface-strong: rgba(255,255,255,.07);
  --border: rgba(255,255,255,.09);
  --text: #E7ECF6;
  --text-dim: #94A3B8;
  --text-faint: #5B6B85;
  --shadow: 0 30px 60px -20px rgba(0,0,0,.55);
}

html[data-theme="light"]{
  --bg: #FBFCFE;
  --bg-1: #FFFFFF;
  --bg-2: #F1F5F9;
  --surface: rgba(15,23,42,.035);
  --surface-strong: rgba(15,23,42,.055);
  --border: rgba(15,23,42,.09);
  --text: #0F172A;
  --text-dim: #4A5772;
  --text-faint: #93A0B8;
  --shadow: 0 30px 60px -25px rgba(15,23,42,.18);
}

body{
  font-family: var(--font-display);
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
  transition: background var(--dur-mid) var(--ease-soft), color var(--dur-mid) var(--ease-soft);
}

/* Live animated network background — sits behind everything.
   Plain .section blocks stay transparent so it reads through as you
   scroll; muted/dark sections keep a solid surface for dense content. */
.bg-canvas{
  position: fixed; inset: 0; width: 100vw; height: 100vh; z-index: -1; pointer-events: none; display: block;
}
.page{ position: static; }

.container{ max-width: var(--container); margin: 0 auto; padding: 0 32px; }

@media (prefers-reduced-motion: reduce){
  *, *::before, *::after{ animation-duration: .001ms !important; animation-iteration-count: 1 !important; transition-duration: .001ms !important; scroll-behavior: auto !important; }
}

/* ---------- 3. UTILITIES ---------- */
.text-gradient{
  background: var(--gradient-brand);
  -webkit-background-clip: text; background-clip: text; color: transparent;
}
.skip-link{
  position: fixed; top: -60px; left: 16px; z-index: 9999;
  background: var(--blue); color: #fff; padding: 10px 18px; border-radius: var(--radius-sm);
  transition: top var(--dur-fast) var(--ease);
}
.skip-link:focus{ top: 16px; }
:focus-visible{ outline: 2px solid var(--cyan); outline-offset: 3px; border-radius: 4px; }

.section{ padding: 140px 0; position: relative; }
.section--muted{ background: var(--bg-1); }
.section--dark{ background: var(--ink); color: #E7ECF6; }
html[data-theme="light"] .section--dark{ --text-dim: #94A3B8; }

.section-tag{
  font-family: var(--font-mono);
  font-size: 13px; letter-spacing: .12em; text-transform: uppercase;
  color: var(--blue-light); font-weight: 500; margin-bottom: 18px;
  display: flex; align-items: center; gap: 10px;
}
.section-tag::before{ content:''; width: 26px; height: 1px; background: var(--blue-light); }
.section-title{
  font-size: clamp(2rem, 4vw, 2.85rem); font-weight: 700; letter-spacing: -.02em;
  line-height: 1.15; max-width: 20ch; margin-bottom: 20px;
}
.section-lede{ color: var(--text-dim); max-width: 56ch; font-size: 1.08rem; margin-bottom: 60px; }

/* scroll reveal */
[data-reveal]{ opacity: 0; transform: translateY(28px); transition: opacity .8s var(--ease), transform .8s var(--ease); transition-delay: var(--reveal-delay, 0ms); }
[data-reveal].is-visible{ opacity: 1; transform: translateY(0); }

/* tag chips */
.tag-list{ display: flex; flex-wrap: wrap; gap: 8px; margin-top: 18px; }
.tag-list li{
  font-family: var(--font-mono); font-size: 12px; padding: 6px 12px;
  background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius-pill);
  color: var(--text-dim);
}

.link-arrow{
  display: inline-flex; align-items: center; gap: 8px; font-weight: 600; color: var(--blue-light);
}
.link-arrow--cert{ margin-top: 18px; font-size: 13.5px; }
.link-arrow svg{ transition: transform var(--dur-fast) var(--ease); }
.link-arrow:hover svg{ transform: translateX(5px); }

/* ---------- 4. LOADER ---------- */
.loader{
  position: fixed; inset: 0; z-index: 10000; background: var(--ink);
  display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 18px;
  transition: opacity .6s var(--ease), visibility .6s var(--ease);
}
.loader.is-hidden{ opacity: 0; visibility: hidden; pointer-events: none; }
.loader__ring{ fill: none; stroke: var(--border); stroke-width: 2; }
.loader__mark{ overflow: visible; }
.loader__mark::after{ content:''; }
.loader__glyph{ fill: #fff; font-family: var(--font-display); font-weight: 700; font-size: 26px; }
.loader__mark circle{
  stroke-dasharray: 314; stroke-dashoffset: 314;
  animation: loaderDraw 1.1s var(--ease) forwards .1s;
  transform-origin: center; stroke: var(--cyan);
}
@keyframes loaderDraw{ to{ stroke-dashoffset: 0; } }
.loader__label{ font-family: var(--font-mono); font-size: 12px; letter-spacing: .15em; text-transform: uppercase; color: var(--text-dim); animation: loaderPulse 1.4s ease-in-out infinite; }
@keyframes loaderPulse{ 0%,100%{ opacity: .4; } 50%{ opacity: 1; } }

/* ---------- 5. CURSOR FOLLOWER ---------- */
.cursor{ position: fixed; top:0; left:0; pointer-events:none; z-index: 9998; display: none; }
@media (hover:hover) and (pointer:fine){ .cursor{ display: block; } body{ cursor: none; } a, button, [data-tilt]{ cursor: none; } }
.cursor__dot{ position: fixed; width: 6px; height: 6px; background: var(--cyan); border-radius: 50%; transform: translate(-50%,-50%); transition: opacity .2s; }
.cursor__ring{ position: fixed; width: 34px; height: 34px; border: 1.5px solid rgba(37,99,235,.55); border-radius: 50%; transform: translate(-50%,-50%); transition: width .25s var(--ease), height .25s var(--ease), border-color .25s; }
.cursor.is-active .cursor__ring{ width: 54px; height: 54px; border-color: var(--cyan); background: rgba(6,182,212,.08); }

/* ---------- 6. GRAIN ---------- */
.grain{
  position: fixed; inset: 0; z-index: 1; pointer-events: none; opacity: .025; mix-blend-mode: overlay;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='120' height='120'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='2' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
}

/* ---------- 7. NAVBAR ---------- */
.nav{
  position: fixed; top: 0; left: 0; right: 0; z-index: 900; height: var(--nav-h);
  display: flex; align-items: center; transition: background var(--dur-fast) var(--ease-soft), border-color var(--dur-fast), backdrop-filter var(--dur-fast);
  border-bottom: 1px solid transparent;
}
.nav.is-scrolled{
  background: color-mix(in srgb, var(--bg) 78%, transparent);
  backdrop-filter: blur(16px) saturate(140%);
  border-bottom-color: var(--border);
}
.nav__inner{ width: 100%; display: flex; align-items: center; justify-content: space-between; }
.nav__logo{ display: flex; align-items: center; gap: 6px; font-family: var(--font-mono); font-weight: 600; font-size: 18px; }
.nav__logo-mark{ letter-spacing: -.02em; }
.nav__logo-dot{ width: 6px; height: 6px; border-radius: 50%; background: var(--cyan); }
.nav__links{ display: flex; gap: 8px; }
.nav__link{
  font-size: 14px; font-weight: 500; color: var(--text-dim); padding: 10px 14px; border-radius: var(--radius-pill);
  display: flex; align-items: center; gap: 7px; transition: color var(--dur-fast), background var(--dur-fast);
}
.nav__link span{ font-family: var(--font-mono); font-size: 10px; color: var(--text-faint); }
.nav__link:hover{ color: var(--text); background: var(--surface); }
.nav__actions{ display: flex; align-items: center; gap: 14px; }
.theme-toggle{
  width: 38px; height: 38px; border-radius: 50%; display: flex; align-items: center; justify-content: center;
  background: var(--surface); border: 1px solid var(--border); position: relative;
}
.theme-toggle svg{ position: absolute; transition: opacity .3s var(--ease), transform .4s var(--ease); }
.theme-toggle__moon{ opacity: 1; transform: rotate(0deg); }
.theme-toggle__sun{ opacity: 0; transform: rotate(-90deg); }
html[data-theme="light"] .theme-toggle__moon{ opacity: 0; transform: rotate(90deg); }
html[data-theme="light"] .theme-toggle__sun{ opacity: 1; transform: rotate(0deg); }
.nav__burger{ display: none; flex-direction: column; gap: 5px; width: 30px; }
.nav__burger span{ height: 2px; background: var(--text); border-radius: 2px; transition: transform .3s var(--ease), opacity .3s var(--ease); }

.mobile-menu{
  position: fixed; inset: 0; z-index: 890; background: var(--bg-1);
  display: flex; flex-direction: column; justify-content: center; padding: 32px;
  transform: translateY(-100%); transition: transform .5s var(--ease);
}
.mobile-menu.is-open{ transform: translateY(0); }
.mobile-menu__links{ display: flex; flex-direction: column; gap: 8px; }
.mobile-menu__links a{ font-size: clamp(1.6rem,7vw,2.4rem); font-weight: 600; padding: 10px 0; border-bottom: 1px solid var(--border); }
.mobile-menu__footer{ display: flex; gap: 24px; margin-top: 40px; color: var(--text-dim); font-family: var(--font-mono); font-size: 13px; }

/* ---------- 8. BUTTONS ---------- */
.btn{
  display: inline-flex; align-items: center; gap: 10px; padding: 15px 26px; border-radius: var(--radius-pill);
  font-weight: 600; font-size: 14.5px; position: relative; overflow: hidden; isolation: isolate;
  transition: transform var(--dur-fast) var(--ease), box-shadow var(--dur-fast) var(--ease), border-color var(--dur-fast);
}
.btn--sm{ padding: 10px 18px; font-size: 13.5px; }
.btn--primary{ background: var(--gradient-brand); color: #fff; box-shadow: 0 12px 30px -10px rgba(37,99,235,.55); }
.btn--primary:hover{ transform: translateY(-2px); box-shadow: 0 18px 36px -10px rgba(37,99,235,.65); }
.btn--ghost{ border: 1.5px solid var(--border); color: var(--text); }
.btn--ghost:hover{ border-color: var(--blue-light); background: var(--surface); }
.btn--magnetic{ will-change: transform; }
.btn--ripple{ isolation: isolate; }
.ripple{
  position: absolute; border-radius: 50%; background: rgba(255,255,255,.55); transform: scale(0);
  animation: rippleAnim .6s var(--ease-soft); pointer-events: none;
}
@keyframes rippleAnim{ to{ transform: scale(2.6); opacity: 0; } }

/* ---------- 9. HERO ---------- */
.hero{ position: relative; min-height: 100vh; display: flex; align-items: center; padding-top: var(--nav-h); overflow: hidden; }

.hero__inner{ position: relative; z-index: 2; display: grid; grid-template-columns: 1.05fr .95fr; gap: 60px; align-items: center; width: 100%; }

.eyebrow{
  font-family: var(--font-mono); font-size: 13px; letter-spacing: .1em; text-transform: uppercase;
  color: var(--blue-light); display: flex; align-items: center; gap: 10px; margin-bottom: 22px; font-weight: 500;
}
.eyebrow__dot{ width: 7px; height: 7px; border-radius: 50%; background: var(--cyan); box-shadow: 0 0 0 4px rgba(6,182,212,.18); animation: pulseDot 2s ease-in-out infinite; }
@keyframes pulseDot{ 0%,100%{ opacity:1; } 50%{ opacity:.4; } }

.hero__title{ font-size: clamp(2.4rem, 5vw, 3.6rem); font-weight: 700; letter-spacing: -.03em; line-height: 1.1; margin-bottom: 18px; }
.hero__type-line{ font-size: clamp(1.2rem, 2.4vw, 1.6rem); font-weight: 500; color: var(--text-dim); margin-bottom: 26px; height: 1.4em; }
.typewriter{ color: var(--text); font-weight: 600; }
.typewriter-cursor{ color: var(--cyan); animation: blinkCursor 1s step-end infinite; font-weight: 300; }
@keyframes blinkCursor{ 50%{ opacity: 0; } }

.hero__intro{ font-size: 1.08rem; color: var(--text-dim); max-width: 52ch; margin-bottom: 38px; }
.hero__actions{ display: flex; flex-wrap: wrap; gap: 16px; margin-bottom: 48px; }

.hero__meta{ display: flex; gap: 34px; flex-wrap: wrap; }
.hero__meta-item{ display: flex; flex-direction: column; gap: 3px; }
.hero__meta-item strong{ font-size: 14.5px; }
.hero__meta-item span{ font-family: var(--font-mono); font-size: 11px; color: var(--text-faint); text-transform: uppercase; letter-spacing: .06em; }

/* hero canvas - signature element */
.hero__visual{ position: relative; height: 520px; }
.canvas{
  position: relative; height: 100%; border-radius: var(--radius-lg); border: 1px solid var(--border);
  background: var(--surface); backdrop-filter: blur(6px);
  overflow: hidden; perspective: 1000px;
}
.canvas__dots{
  position: absolute; inset: 0;
  background-image: radial-gradient(var(--text-faint) 1px, transparent 1px);
  background-size: 26px 26px; opacity: .25;
}
.canvas__coord{
  position: absolute; top: 16px; left: 16px; z-index: 5; font-family: var(--font-mono); font-size: 11px;
  color: var(--cyan); background: var(--surface-strong); border: 1px solid var(--border); padding: 5px 10px; border-radius: var(--radius-pill);
  backdrop-filter: blur(8px);
}
.canvas__frame--main{
  position: absolute; top: 50%; left: 50%; transform: translate(-50%,-50%);
  width: 230px; background: var(--bg-1); border: 1px solid var(--border); border-radius: var(--radius-md);
  box-shadow: var(--shadow); overflow: hidden; z-index: 3;
  animation: floatFrame 7s ease-in-out infinite;
}
@keyframes floatFrame{ 0%,100%{ transform: translate(-50%,-50%) translateY(0); } 50%{ transform: translate(-50%,-50%) translateY(-14px); } }
.canvas__frame-bar{ display: flex; align-items: center; gap: 5px; padding: 10px 12px; border-bottom: 1px solid var(--border); }
.canvas__frame-bar span{ width: 7px; height: 7px; border-radius: 50%; background: var(--text-faint); }
.canvas__frame-bar em{ font-style: normal; font-family: var(--font-mono); font-size: 10px; color: var(--text-faint); margin-left: 6px; }
.canvas__photo{ padding: 22px; display: flex; justify-content: center; }
.canvas__photo img{
  width: 150px; height: 150px; object-fit: cover; border-radius: 50%;
  border: 3px solid var(--bg-1); outline: 2px solid var(--blue-light); outline-offset: 4px;
}
.canvas__ring{
  position: absolute; inset: -22px; border-radius: var(--radius-lg); border: 1px dashed var(--border); z-index: -1;
}

.canvas__chip{
  position: absolute; display: flex; align-items: center; gap: 6px; font-family: var(--font-mono); font-size: 11.5px;
  padding: 8px 13px; border-radius: var(--radius-pill); background: var(--surface-strong); border: 1px solid var(--border);
  backdrop-filter: blur(8px); z-index: 4; color: var(--text);
}
.canvas__chip--1{ top: 14%; right: 10%; animation: floatChip 6s ease-in-out infinite; }
.canvas__chip--2{ bottom: 20%; left: 6%; animation: floatChip 7.5s ease-in-out infinite 1s; }
.canvas__chip--3{ bottom: 10%; right: 8%; animation: floatChip 8.5s ease-in-out infinite .5s; }
@keyframes floatChip{ 0%,100%{ transform: translateY(0); } 50%{ transform: translateY(-10px); } }
.canvas__label{
  position: absolute; font-family: var(--font-mono); font-size: 10.5px; color: var(--text-faint);
  border: 1px dashed var(--border); padding: 4px 9px; border-radius: 6px; z-index: 2;
}
.canvas__label--1{ top: 30%; left: 8%; }
.canvas__label--2{ top: 12%; left: 32%; }

.scroll-indicator{
  position: absolute; bottom: 34px; left: 50%; transform: translateX(-50%); z-index: 2;
  display: flex; flex-direction: column; align-items: center; gap: 10px; color: var(--text-faint);
}
.scroll-indicator__mouse{ width: 24px; height: 38px; border: 2px solid var(--text-faint); border-radius: 14px; display: flex; justify-content: center; padding-top: 6px; }
.scroll-indicator__mouse span{ width: 3px; height: 7px; border-radius: 2px; background: var(--cyan); animation: scrollDown 1.6s ease-in-out infinite; }
@keyframes scrollDown{ 0%{ opacity: 1; transform: translateY(0); } 70%{ opacity: 0; transform: translateY(10px); } 100%{ opacity: 0; } }
.scroll-indicator__label{ font-family: var(--font-mono); font-size: 10px; letter-spacing: .12em; text-transform: uppercase; }

/* ---------- 10. ABOUT ---------- */
.about__grid{ display: grid; grid-template-columns: 1.3fr .9fr; gap: 60px; }
.about__text p{ color: var(--text-dim); margin-bottom: 18px; max-width: 60ch; }
.about__cards{ display: grid; grid-template-columns: repeat(2, minmax(0,1fr)); gap: 14px; margin-top: 30px; }
.info-card{
  min-width: 0;
  background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius-md); padding: 18px 20px;
  transition: transform var(--dur-fast) var(--ease), border-color var(--dur-fast), background var(--dur-fast);
}
.info-card:hover{ transform: translateY(-4px); border-color: var(--blue-light); background: var(--surface-strong); }
.info-card--wide{ grid-column: 1 / -1; }
.info-card__label{ display: block; font-family: var(--font-mono); font-size: 11px; text-transform: uppercase; letter-spacing: .06em; color: var(--text-faint); margin-bottom: 8px; }
.info-card__value{ font-weight: 600; font-size: 15px; }
.info-card__value small{ color: var(--text-faint); font-weight: 400; }
.tag-list--tight{ margin-top: 4px; }

.about__stats{ display: grid; grid-template-columns: repeat(2, minmax(0,1fr)); gap: 16px; align-content: start; }
.stat-card{
  min-width: 0;
  background: var(--gradient-brand-soft); border: 1px solid var(--border); border-radius: var(--radius-lg);
  padding: 26px 22px; display: flex; flex-direction: column; gap: 6px;
}
.stat-card__num{ font-size: 2.6rem; font-weight: 800; font-family: var(--font-mono); background: var(--gradient-brand); -webkit-background-clip: text; background-clip: text; color: transparent; }
.stat-card__plus{ font-size: 1.4rem; font-weight: 700; color: var(--cyan); margin-left: -2px; }
.stat-card__label{ color: var(--text-dim); font-size: 13.5px; }

/* ---------- 11. SKILLS ---------- */
.skills-tabs{ display: inline-flex; gap: 6px; background: var(--surface); border: 1px solid var(--border); padding: 6px; border-radius: var(--radius-pill); margin-bottom: 44px; }
.skills-tab{ padding: 10px 22px; border-radius: var(--radius-pill); font-weight: 600; font-size: 14px; color: var(--text-dim); transition: color var(--dur-fast), background var(--dur-fast); }
.skills-tab.is-active{ background: var(--gradient-brand); color: #fff; }
.skills-grid{ display: grid; grid-template-columns: repeat(3, minmax(0,1fr)); gap: 16px; }
.skill-card{
  min-width: 0;
  background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius-md); padding: 20px 22px;
  transition: transform var(--dur-fast) var(--ease), border-color var(--dur-fast), box-shadow var(--dur-fast);
  display: none;
}
.skill-card.is-shown{ display: block; }
.skill-card:hover{ transform: translateY(-5px); border-color: var(--blue-light); box-shadow: 0 20px 40px -20px rgba(37,99,235,.4); }
.skill-card__top{ display: flex; align-items: center; gap: 10px; margin-bottom: 14px; }
.skill-card__icon{ font-size: 18px; }
.skill-card__name{ font-weight: 600; font-size: 14.5px; flex: 1; }
.skill-card__pct{ font-family: var(--font-mono); font-size: 12px; color: var(--text-faint); }
.skill-card__bar{ height: 6px; border-radius: 4px; background: var(--surface-strong); overflow: hidden; }
.skill-card__bar i{ display: block; height: 100%; width: 0; background: var(--gradient-brand); border-radius: 4px; transition: width 1.2s var(--ease); }
.skill-card.is-animated .skill-card__bar i{ width: var(--level); }

/* ---------- 12. PROJECTS ---------- */
.projects-grid{ display: grid; grid-template-columns: repeat(2, minmax(0,1fr)); gap: 26px; }
.project-card{
  min-width: 0;
  position: relative; border-radius: var(--radius-lg); border: 1px solid var(--border); background: var(--surface);
  overflow: hidden; transition: transform .1s var(--ease-soft), box-shadow var(--dur-fast) var(--ease); transform-style: preserve-3d;
}
.project-card:hover{ box-shadow: 0 30px 60px -25px rgba(37,99,235,.45); }
.project-card__glow{
  position: absolute; inset: -1px; border-radius: inherit; padding: 1px; opacity: 0; transition: opacity var(--dur-fast);
  background: var(--gradient-brand); -webkit-mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0);
  -webkit-mask-composite: xor; mask-composite: exclude; pointer-events: none; z-index: 2;
}
.project-card:hover .project-card__glow{ opacity: .9; }
.project-card__media{
  height: 190px; position: relative; overflow: hidden; display: flex; align-items: center; justify-content: center;
  background: var(--gradient-brand-soft); border-bottom: 1px solid var(--border);
}
.project-card__body{ padding: 26px 26px 28px; }
.project-card__head{ display: flex; align-items: baseline; justify-content: space-between; gap: 10px; margin-bottom: 10px; }
.project-card__head h3{ font-size: 1.25rem; font-weight: 700; }
.project-card__team{ font-family: var(--font-mono); font-size: 11px; color: var(--text-faint); white-space: nowrap; }
.project-card__body p{ color: var(--text-dim); font-size: 14.5px; margin-bottom: 16px; }
.project-card__stack{ display: flex; flex-wrap: wrap; gap: 7px; margin-bottom: 20px; }
.project-card__stack li{ font-family: var(--font-mono); font-size: 11px; padding: 5px 10px; border-radius: var(--radius-pill); background: var(--surface-strong); color: var(--text-dim); }
.project-card__links{ display: flex; gap: 14px; }
.project-card__links a{ display: flex; align-items: center; gap: 7px; font-weight: 600; font-size: 13.5px; color: var(--blue-light); transition: gap var(--dur-fast); }
.project-card__links a:hover{ gap: 10px; }

/* project mock visuals (css-only illustrations) */
.mock{ width: 84%; }
.mock--chat{ display: flex; flex-direction: column; gap: 8px; }
.mock__bubble{ font-family: var(--font-mono); font-size: 10.5px; padding: 10px 12px; border-radius: 12px; max-width: 88%; line-height: 1.5; }
.mock__bubble--q{ align-self: flex-end; background: var(--blue); color: #fff; border-bottom-right-radius: 3px; }
.mock__bubble--a{ align-self: flex-start; background: var(--bg-1); border: 1px solid var(--border); border-bottom-left-radius: 3px; }
.mock__bubble--a cite{ display: block; font-style: normal; color: var(--cyan); margin-top: 4px; font-size: 9px; }
.mock--scan{ background: var(--bg-1); border: 1px solid var(--border); border-radius: 10px; padding: 12px 14px; font-family: var(--font-mono); font-size: 11px; width: 90%; }
.mock__row{ display: flex; align-items: center; gap: 8px; padding: 6px 0; border-bottom: 1px solid var(--border); }
.mock__row:last-child{ border: none; }
.mock__dot{ width: 7px; height: 7px; border-radius: 50%; flex-shrink: 0; }
.mock__dot--ok{ background: #10B981; }
.mock__dot--warn{ background: #F59E0B; }
.mock--card{ background: var(--bg-1); border: 1px solid var(--border); border-radius: 14px; padding: 20px; width: 78%; }
.mock__card-top{ display: flex; flex-direction: column; gap: 4px; margin-bottom: 16px; }
.mock__card-top span{ font-family: var(--font-mono); font-size: 10px; color: var(--text-faint); }
.mock__card-top strong{ font-size: 20px; }
.mock__card-chip{ width: 42px; height: 30px; border-radius: 6px; background: var(--gradient-brand); }
.mock--list{ width: 80%; display: flex; flex-direction: column; gap: 10px; }
.mock__list-row{ height: 34px; border-radius: 8px; background: var(--bg-1); border: 1px solid var(--border); }
.mock--player{ width: 80%; }
.mock__wave{ display: flex; align-items: flex-end; gap: 5px; height: 60px; }
.mock__wave span{ flex: 1; background: var(--gradient-brand); border-radius: 3px; animation: waveMove 1.4s ease-in-out infinite; }
.mock__wave span:nth-child(1){ height: 30%; animation-delay: 0s; }
.mock__wave span:nth-child(2){ height: 60%; animation-delay: .1s; }
.mock__wave span:nth-child(3){ height: 90%; animation-delay: .2s; }
.mock__wave span:nth-child(4){ height: 45%; animation-delay: .3s; }
.mock__wave span:nth-child(5){ height: 75%; animation-delay: .4s; }
.mock__wave span:nth-child(6){ height: 55%; animation-delay: .5s; }
.mock__wave span:nth-child(7){ height: 35%; animation-delay: .6s; }
@keyframes waveMove{ 0%,100%{ transform: scaleY(.6); } 50%{ transform: scaleY(1); } }

/* ---------- 13. PROCESS ---------- */
.section--dark .section-lede{ color: #94A3B8; }
.process{ position: relative; display: grid; grid-template-columns: repeat(7, minmax(0,1fr)); gap: 14px; margin-top: 30px; }
.process__line{ position: absolute; top: 22px; left: 0; right: 0; height: 2px; background: rgba(255,255,255,.08); }
.process__line-fill{ display: block; height: 100%; width: 0; background: var(--gradient-brand); transition: width 1.6s var(--ease); }
.process__step{ min-width: 0; position: relative; padding-top: 50px; }
.process__num{ position: absolute; top: 0; left: 0; width: 44px; height: 44px; border-radius: 50%; background: var(--ink); border: 2px solid var(--blue-light); display: flex; align-items: center; justify-content: center; font-family: var(--font-mono); font-size: 12px; color: var(--cyan); }
.process__icon{ display: block; font-size: 22px; margin-bottom: 10px; }
.process__step h3{ font-size: 15px; margin-bottom: 8px; }
.process__step p{ font-size: 13px; color: #94A3B8; line-height: 1.5; }

/* ---------- 14. CASE STUDIES ---------- */
.case-study{ display: grid; grid-template-columns: .85fr 1.15fr; gap: 50px; align-items: center; margin-bottom: 70px; }
.case-study:last-child{ margin-bottom: 0; }
.case-study--reverse{ direction: rtl; }
.case-study--reverse > *{ direction: ltr; }
.case-study__visual{
  height: 320px; border-radius: var(--radius-lg); border: 1px solid var(--border); position: relative; overflow: hidden;
  background: var(--gradient-brand-soft); display: flex; align-items: flex-end; padding: 22px;
}
.case-study__visual--money{ background: linear-gradient(135deg, rgba(37,99,235,.25), rgba(6,182,212,.1)); }
.case-study__visual--food{ background: linear-gradient(135deg, rgba(6,182,212,.22), rgba(37,99,235,.08)); }
.case-study__badge{ font-family: var(--font-mono); font-size: 12px; padding: 8px 16px; border-radius: var(--radius-pill); background: var(--surface-strong); border: 1px solid var(--border); backdrop-filter: blur(8px); }
.case-study__content h3{ font-size: 1.5rem; font-weight: 700; margin-bottom: 14px; max-width: 22ch; }
.case-study__content p{ color: var(--text-dim); margin-bottom: 20px; max-width: 50ch; }
.case-study__phases{ display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 24px; }
.case-study__phases li{ font-family: var(--font-mono); font-size: 11.5px; padding: 6px 12px; border-radius: var(--radius-pill); border: 1px solid var(--border); color: var(--text-dim); }

/* ---------- 15. TIMELINE (experience + education) ---------- */
.timeline{ position: relative; max-width: 760px; }
.timeline::before{ content:''; position: absolute; left: 9px; top: 8px; bottom: 8px; width: 2px; background: var(--border); }
.timeline__item{ position: relative; padding-left: 44px; margin-bottom: 30px; }
.timeline__item:last-child{ margin-bottom: 0; }
.timeline__dot{ position: absolute; left: 0; top: 8px; width: 20px; height: 20px; border-radius: 50%; background: var(--bg-1); border: 2px solid var(--border); }
.timeline__dot--active{ border-color: var(--cyan); box-shadow: 0 0 0 4px rgba(6,182,212,.15); }
.timeline__dot--active::after{ content:''; position: absolute; inset: 4px; border-radius: 50%; background: var(--cyan); }
.timeline__card{ background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius-md); padding: 24px 26px; transition: transform var(--dur-fast) var(--ease), border-color var(--dur-fast); }
.timeline__card:hover{ transform: translateX(6px); border-color: var(--blue-light); }
.timeline__date{ font-family: var(--font-mono); font-size: 11.5px; color: var(--cyan); text-transform: uppercase; letter-spacing: .05em; }
.timeline__card h3{ font-size: 1.15rem; margin: 8px 0 4px; }
.timeline__org{ display: block; color: var(--text-dim); font-size: 13.5px; margin-bottom: 12px; }
.timeline__card p{ color: var(--text-dim); font-size: 14.5px; }

/* ---------- 16. CERTIFICATES ---------- */
.cert-grid{ display: grid; grid-template-columns: repeat(2, minmax(0,1fr)); gap: 22px; }
.cert-card{ min-width: 0; background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius-lg); padding: 30px; transition: transform var(--dur-fast) var(--ease), border-color var(--dur-fast); }
.cert-card:hover{ transform: translateY(-6px); border-color: var(--blue-light); }
.cert-card__icon{ font-size: 30px; margin-bottom: 16px; }
.cert-card h3{ font-size: 1.05rem; line-height: 1.4; margin-bottom: 10px; }
.cert-card__provider{ display: block; font-family: var(--font-mono); font-size: 11.5px; color: var(--text-faint); margin-bottom: 12px; }
.cert-card p{ color: var(--text-dim); font-size: 14px; }

/* ---------- 17. CONTACT ---------- */
.contact__grid{ display: grid; grid-template-columns: 1.2fr .8fr; gap: 40px; }
.contact-form{
  background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius-lg); padding: 40px;
  backdrop-filter: blur(10px); display: flex; flex-direction: column; gap: 22px;
}
.field{ position: relative; }
.field input, .field textarea{
  width: 100%; background: var(--bg-1); border: 1px solid var(--border); border-radius: var(--radius-sm);
  padding: 18px 16px 8px; transition: border-color var(--dur-fast);
  resize: vertical;
}
.field input:focus, .field textarea:focus{ border-color: var(--blue-light); }
.field label{
  position: absolute; left: 16px; top: 18px; color: var(--text-faint); pointer-events: none;
  transition: transform var(--dur-fast) var(--ease), font-size var(--dur-fast) var(--ease), color var(--dur-fast);
}
.field input:focus + label, .field input:not(:placeholder-shown) + label,
.field textarea:focus + label, .field textarea:not(:placeholder-shown) + label{
  transform: translateY(-10px); font-size: 11px; color: var(--blue-light);
}
.contact-form .btn{ align-self: flex-start; }
.contact-form__note{ font-size: 13px; color: var(--cyan); min-height: 18px; }

.contact-side{ display: flex; flex-direction: column; gap: 16px; }
.contact-side__item{
  display: flex; flex-direction: column; gap: 4px; padding: 20px 22px; border: 1px solid var(--border);
  border-radius: var(--radius-md); background: var(--surface); transition: border-color var(--dur-fast), transform var(--dur-fast);
}
.contact-side__item:hover{ border-color: var(--blue-light); transform: translateY(-3px); }
.contact-side__label{ font-family: var(--font-mono); font-size: 11px; text-transform: uppercase; letter-spacing: .06em; color: var(--text-faint); }
.contact-side__value{ font-weight: 600; }
.social-row{ display: flex; gap: 12px; margin-top: 6px; }
.social-icon{
  width: 46px; height: 46px; border-radius: 50%; display: flex; align-items: center; justify-content: center;
  border: 1px solid var(--border); background: var(--surface); transition: transform var(--dur-fast) var(--ease), border-color var(--dur-fast), color var(--dur-fast);
}
.social-icon:hover{ transform: translateY(-4px); border-color: var(--cyan); color: var(--cyan); }
.contact-side__note{ font-size: 12.5px; color: var(--text-faint); margin-top: 6px; line-height: 1.6; }

/* ---------- 18. FOOTER ---------- */
.footer{ padding: 34px 0; border-top: 1px solid var(--border); }
.footer__inner{ display: flex; align-items: center; justify-content: space-between; }
.footer p{ font-size: 13.5px; color: var(--text-dim); }
.footer__heart{ color: var(--cyan); display: inline-block; animation: heartBeat 1.6s ease-in-out infinite; }
@keyframes heartBeat{ 0%,100%{ transform: scale(1); } 50%{ transform: scale(1.25); } }
.back-to-top{
  width: 42px; height: 42px; border-radius: 50%; border: 1px solid var(--border); display: flex; align-items: center; justify-content: center;
  transition: transform var(--dur-fast) var(--ease), border-color var(--dur-fast), background var(--dur-fast);
}
.back-to-top:hover{ transform: translateY(-4px); border-color: var(--blue-light); background: var(--surface); }

/* ---------- 19. RESPONSIVE ---------- */
@media (max-width: 1080px){
  .hero__inner{ grid-template-columns: 1fr; }
  .hero__visual{ height: 400px; order: -1; }
  .about__grid, .contact__grid{ grid-template-columns: 1fr; }
  .projects-grid{ grid-template-columns: 1fr; }
  .process{ grid-template-columns: repeat(4, minmax(0,1fr)); row-gap: 40px; }
  .process__line{ display: none; }
  .case-study, .case-study--reverse{ grid-template-columns: 1fr; direction: ltr; }
  .case-study__visual{ height: 220px; }
}

@media (max-width: 860px){
  .nav__links{ display: none; }
  .nav__burger{ display: flex; }
  .skills-grid{ grid-template-columns: repeat(2, minmax(0,1fr)); }
  .cert-grid{ grid-template-columns: 1fr; }
  .about__cards{ grid-template-columns: repeat(2, minmax(0,1fr)); }
  .section{ padding: 100px 0; }
}

@media (max-width: 560px){
  .container{ padding: 0 20px; }
  .hero__actions{ flex-direction: column; align-items: stretch; }
  .hero__actions .btn{ justify-content: center; }
  .hero__meta{ gap: 20px; }
  .process{ grid-template-columns: repeat(2, minmax(0,1fr)); }
  .skills-grid{ grid-template-columns: repeat(2, minmax(0,1fr)); }
  .about__cards{ grid-template-columns: 1fr; }
  .footer__inner{ flex-direction: column; gap: 14px; text-align: center; }
  .canvas__frame--main{ width: 180px; }
  .contact-form{ padding: 26px; }
}

@media (max-width: 420px){
  .skills-grid{ grid-template-columns: minmax(0,1fr); }
  .process{ grid-template-columns: minmax(0,1fr); }
}

.nav__burger.is-open span:nth-child(1){ transform: translateY(7px) rotate(45deg); }
.nav__burger.is-open span:nth-child(2){ opacity: 0; }
.nav__burger.is-open span:nth-child(3){ transform: translateY(-7px) rotate(-45deg); }