/* Ahsan Lodhi — Professional Portfolio */
:root {
  --bg: #070b14;
  --bg-elevated: #0f1629;
  --bg-soft: #151e36;
  --line: rgba(238, 242, 255, 0.1);
  --line-strong: rgba(238, 242, 255, 0.18);
  --text: #eef2ff;
  --muted: #9aa6c4;
  --accent: #5b8cff;
  --accent-2: #8eb4ff;
  --warm: #f0a36b;
  --warm-2: #ffc08a;
  --success: #3ecf8e;
  --shadow: 0 24px 80px rgba(0, 0, 0, 0.45);
  --radius: 18px;
  --radius-sm: 12px;
  --font-display: "Bricolage Grotesque", system-ui, sans-serif;
  --font-body: "Plus Jakarta Sans", system-ui, sans-serif;
  --max: 1160px;
  --header-h: 78px;
}

*,
*::before,
*::after { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: var(--font-body);
  font-size: 1.02rem;
  line-height: 1.7;
  color: var(--text);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
}

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

.container {
  width: min(100% - 2.75rem, var(--max));
  margin-inline: auto;
}

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

/* Background system */
.bg-atmosphere {
  position: fixed;
  inset: 0;
  z-index: -2;
  background:
    radial-gradient(1000px 560px at 8% -8%, rgba(91, 140, 255, 0.28), transparent 58%),
    radial-gradient(820px 520px at 100% 0%, rgba(240, 163, 107, 0.16), transparent 52%),
    radial-gradient(900px 700px at 70% 100%, rgba(62, 207, 142, 0.08), transparent 55%),
    linear-gradient(180deg, #070b14 0%, #0a1020 48%, #070b14 100%);
}

.bg-grid {
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  opacity: 0.22;
  background-image:
    linear-gradient(rgba(238, 242, 255, 0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(238, 242, 255, 0.04) 1px, transparent 1px);
  background-size: 72px 72px;
  mask-image: radial-gradient(ellipse at center, #000 25%, transparent 78%);
}

/* Header */
.site-header {
  position: fixed;
  inset: 0 0 auto;
  z-index: 60;
  height: var(--header-h);
  display: flex;
  align-items: center;
  transition: background 0.3s ease, border-color 0.3s ease, backdrop-filter 0.3s ease;
  border-bottom: 1px solid transparent;
}

.site-header.is-scrolled {
  background: rgba(7, 11, 20, 0.78);
  backdrop-filter: blur(16px) saturate(1.2);
  border-bottom-color: var(--line);
}

.header-inner {
  width: min(100% - 2.75rem, var(--max));
  margin-inline: auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.brand {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.2rem;
  letter-spacing: -0.04em;
  display: inline-flex;
  align-items: baseline;
  gap: 0.35rem;
}

.brand span { color: var(--warm); }

.nav {
  display: flex;
  align-items: center;
  gap: 1.35rem;
}

.nav a {
  font-size: 0.92rem;
  color: var(--muted);
  transition: color 0.2s ease;
}

.nav a:hover,
.nav a:focus-visible { color: var(--text); }

.nav-cta {
  padding: 0.55rem 1rem !important;
  border-radius: 999px;
  background: linear-gradient(135deg, var(--accent), #3d6ef5);
  color: white !important;
  font-weight: 600;
  box-shadow: 0 10px 30px rgba(91, 140, 255, 0.28);
}

.nav-toggle {
  display: none;
  width: 44px;
  height: 44px;
  border-radius: 12px;
  border: 1px solid var(--line);
  background: rgba(255,255,255,0.03);
  color: var(--text);
  cursor: pointer;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.95rem 1.4rem;
  border-radius: 999px;
  border: 1px solid transparent;
  font-weight: 650;
  font-size: 0.95rem;
  cursor: pointer;
  transition: transform 0.2s ease, box-shadow 0.2s ease, background 0.2s ease, border-color 0.2s ease;
}

.btn:hover { transform: translateY(-2px); }

.btn-primary {
  background: linear-gradient(135deg, var(--warm) 0%, #e08a4a 100%);
  color: #1a1008;
  box-shadow: 0 14px 36px rgba(240, 163, 107, 0.28);
}

.btn-secondary {
  background: linear-gradient(135deg, var(--accent), #3d6ef5);
  color: #fff;
  box-shadow: 0 14px 36px rgba(91, 140, 255, 0.25);
}

.btn-ghost {
  border-color: var(--line-strong);
  color: var(--text);
  background: rgba(255,255,255,0.03);
}

.btn-ghost:hover {
  border-color: var(--accent-2);
  color: var(--accent-2);
}

/* Hero */
.hero {
  min-height: 100svh;
  display: grid;
  align-items: end;
  padding: calc(var(--header-h) + 2.5rem) 0 4.5rem;
  position: relative;
  overflow: hidden;
}

.hero-visual {
  position: absolute;
  inset: 0;
  z-index: 0;
  background:
    linear-gradient(105deg, rgba(7,11,20,0.94) 0%, rgba(7,11,20,0.72) 42%, rgba(7,11,20,0.35) 100%),
    radial-gradient(circle at 78% 42%, rgba(91,140,255,0.35), transparent 28%),
    radial-gradient(circle at 62% 68%, rgba(240,163,107,0.22), transparent 26%),
    linear-gradient(160deg, #101933, #070b14 55%, #132038);
  animation: heroPulse 14s ease-in-out infinite alternate;
}

.hero-visual::after {
  content: "";
  position: absolute;
  inset: 12% 8% 18% 48%;
  border: 1px solid rgba(238,242,255,0.08);
  border-radius: 32px;
  background:
    linear-gradient(145deg, rgba(91,140,255,0.12), transparent 40%),
    linear-gradient(320deg, rgba(240,163,107,0.1), transparent 45%);
  box-shadow: inset 0 0 80px rgba(91,140,255,0.08), var(--shadow);
  transform: rotate(-2deg);
}

@keyframes heroPulse {
  from { filter: saturate(1) brightness(1); }
  to { filter: saturate(1.08) brightness(1.05); }
}

.hero-content {
  position: relative;
  z-index: 1;
  max-width: 42rem;
}

.hero-kicker {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  margin: 0 0 1.25rem;
  padding: 0.4rem 0.85rem;
  border-radius: 999px;
  border: 1px solid rgba(91,140,255,0.35);
  background: rgba(91,140,255,0.08);
  color: var(--accent-2);
  font-size: 0.82rem;
  font-weight: 600;
  letter-spacing: 0.02em;
  opacity: 0;
  animation: riseIn 0.8s ease 0.05s forwards;
}

.hero-kicker i {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--success);
  box-shadow: 0 0 0 4px rgba(62,207,142,0.15);
}

.hero-brand {
  font-family: var(--font-display);
  font-size: clamp(3rem, 9vw, 5.6rem);
  font-weight: 760;
  letter-spacing: -0.055em;
  line-height: 0.92;
  margin: 0 0 1.2rem;
  opacity: 0;
  animation: riseIn 0.85s ease 0.15s forwards;
}

.hero-brand em {
  font-style: normal;
  background: linear-gradient(120deg, var(--warm-2), var(--warm) 45%, var(--accent-2));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.hero-headline {
  font-family: var(--font-display);
  font-size: clamp(1.25rem, 2.8vw, 1.7rem);
  font-weight: 600;
  letter-spacing: -0.025em;
  line-height: 1.3;
  margin: 0 0 0.9rem;
  color: #d9e2ff;
  max-width: 34rem;
  opacity: 0;
  animation: riseIn 0.85s ease 0.28s forwards;
}

.hero-support {
  margin: 0 0 1.6rem;
  color: var(--muted);
  max-width: 34rem;
  opacity: 0;
  animation: riseIn 0.85s ease 0.4s forwards;
}

.hero-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin: 0 0 1.75rem;
  opacity: 0;
  animation: riseIn 0.85s ease 0.5s forwards;
}

.hero-tags span {
  padding: 0.4rem 0.75rem;
  border-radius: 999px;
  background: rgba(255,255,255,0.04);
  border: 1px solid var(--line);
  color: #c8d2ef;
  font-size: 0.82rem;
  font-weight: 550;
}

.hero-cta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  opacity: 0;
  animation: riseIn 0.85s ease 0.6s forwards;
}

@keyframes riseIn {
  from { opacity: 0; transform: translateY(20px); }
  to { opacity: 1; transform: translateY(0); }
}

/* Sections */
section { padding: 6rem 0; }

.section-label {
  margin: 0 0 0.75rem;
  font-size: 0.78rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--warm);
  font-weight: 700;
}

.section-title {
  margin: 0 0 0.85rem;
  font-family: var(--font-display);
  font-size: clamp(1.9rem, 4.2vw, 2.85rem);
  font-weight: 720;
  letter-spacing: -0.035em;
  line-height: 1.12;
}

.section-lead {
  margin: 0;
  color: var(--muted);
  max-width: 40rem;
}

.section-head { margin-bottom: 2.75rem; }

.reveal {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 0.75s ease, transform 0.75s ease;
}

.reveal.is-visible {
  opacity: 1;
  transform: none;
}

/* About */
.about-shell {
  display: grid;
  grid-template-columns: 1.25fr 0.9fr;
  gap: 2rem;
}

.panel {
  background: linear-gradient(180deg, rgba(255,255,255,0.03), rgba(255,255,255,0.015));
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 1.75rem;
  box-shadow: var(--shadow);
}

.about-copy p + p { margin-top: 1rem; color: var(--muted); }
.about-copy p:first-child { margin-top: 0; }

.skill-cloud {
  display: flex;
  flex-wrap: wrap;
  gap: 0.55rem;
  margin-top: 1.5rem;
}

.skill-cloud span {
  padding: 0.45rem 0.8rem;
  border-radius: 999px;
  background: rgba(91,140,255,0.08);
  border: 1px solid rgba(91,140,255,0.22);
  color: var(--accent-2);
  font-size: 0.84rem;
  font-weight: 600;
}

.metric-grid {
  display: grid;
  gap: 1rem;
}

.metric {
  padding: 1.1rem 1.15rem;
  border-radius: var(--radius-sm);
  background: rgba(255,255,255,0.025);
  border: 1px solid var(--line);
}

.metric strong {
  display: block;
  font-family: var(--font-display);
  font-size: 1.85rem;
  letter-spacing: -0.04em;
  line-height: 1;
  margin-bottom: 0.35rem;
  color: var(--warm-2);
}

.metric span { color: var(--muted); font-size: 0.92rem; }

/* AI */
.ai-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1rem;
}

.ai-card {
  padding: 1.5rem;
  border-radius: var(--radius);
  border: 1px solid var(--line);
  background:
    linear-gradient(165deg, rgba(91,140,255,0.08), transparent 55%),
    rgba(15, 22, 41, 0.85);
  min-height: 100%;
  transition: border-color 0.25s ease, transform 0.25s ease;
}

.ai-card:hover {
  border-color: rgba(91,140,255,0.4);
  transform: translateY(-3px);
}

.ai-card .icon {
  width: 42px;
  height: 42px;
  border-radius: 12px;
  display: grid;
  place-items: center;
  margin-bottom: 1rem;
  background: rgba(91,140,255,0.12);
  color: var(--accent-2);
  font-size: 1.15rem;
}

.ai-card h3 {
  margin: 0 0 0.55rem;
  font-family: var(--font-display);
  font-size: 1.2rem;
  letter-spacing: -0.02em;
}

.ai-card p {
  margin: 0;
  color: var(--muted);
  font-size: 0.95rem;
}

.ai-list {
  margin: 2rem 0 0;
  padding: 1.5rem;
  border-radius: var(--radius);
  border: 1px solid var(--line);
  background: rgba(255,255,255,0.02);
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.85rem 1.5rem;
}

.ai-list li {
  list-style: none;
  position: relative;
  padding-left: 1.2rem;
  color: #c9d4f0;
}

.ai-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.55rem;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--success);
}

/* Featured Cyrix */
.featured-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1rem;
}

.featured-card {
  position: relative;
  overflow: hidden;
  border-radius: var(--radius);
  border: 1px solid var(--line);
  background: var(--bg-elevated);
  padding: 1.6rem;
  min-height: 280px;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  transition: transform 0.25s ease, border-color 0.25s ease;
}

.featured-card::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(500px 240px at 100% 0%, rgba(91,140,255,0.22), transparent 55%),
    radial-gradient(420px 220px at 0% 100%, rgba(240,163,107,0.14), transparent 50%);
  pointer-events: none;
}

.featured-card > * { position: relative; z-index: 1; }

.featured-card:hover {
  transform: translateY(-4px);
  border-color: rgba(240,163,107,0.35);
}

.featured-card .eyebrow {
  font-size: 0.78rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--warm);
  font-weight: 700;
  margin-bottom: 0.6rem;
}

.featured-card h3 {
  margin: 0 0 0.55rem;
  font-family: var(--font-display);
  font-size: 1.45rem;
  letter-spacing: -0.03em;
}

.featured-card p {
  margin: 0 0 1.1rem;
  color: var(--muted);
  font-size: 0.95rem;
}

.featured-card .links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.55rem;
}

.chip-link {
  padding: 0.45rem 0.8rem;
  border-radius: 999px;
  border: 1px solid var(--line-strong);
  font-size: 0.84rem;
  font-weight: 600;
  color: var(--accent-2);
}

.chip-link:hover {
  background: rgba(91,140,255,0.12);
}

/* Experience */
.timeline {
  display: grid;
  gap: 1rem;
}

.exp-item {
  display: grid;
  grid-template-columns: 220px 1fr;
  gap: 1.25rem;
  padding: 1.5rem;
  border-radius: var(--radius);
  border: 1px solid var(--line);
  background: linear-gradient(180deg, rgba(255,255,255,0.03), rgba(255,255,255,0.01));
}

.exp-meta {
  color: var(--muted);
  font-size: 0.9rem;
}

.exp-meta strong {
  display: block;
  color: var(--warm-2);
  font-size: 0.95rem;
  margin-bottom: 0.35rem;
}

.exp-item h3 {
  margin: 0 0 0.25rem;
  font-family: var(--font-display);
  font-size: 1.25rem;
  letter-spacing: -0.02em;
}

.exp-item .company {
  color: var(--accent-2);
  font-weight: 650;
  margin-bottom: 0.55rem;
}

.exp-item p {
  margin: 0 0 0.85rem;
  color: var(--muted);
}

.exp-skills {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
}

.exp-skills span {
  font-size: 0.78rem;
  padding: 0.3rem 0.65rem;
  border-radius: 999px;
  background: rgba(255,255,255,0.04);
  border: 1px solid var(--line);
  color: #c7d2ef;
}

.linkedin-row {
  margin-top: 1.5rem;
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  align-items: center;
}

/* Portfolio */
.filters {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: 1.25rem;
}

.filter-btn {
  background: transparent;
  border: 1px solid var(--line);
  color: var(--muted);
  padding: 0.5rem 0.95rem;
  border-radius: 999px;
  cursor: pointer;
  transition: all 0.2s ease;
}

.filter-btn:hover,
.filter-btn.is-active {
  color: #081018;
  background: var(--text);
  border-color: var(--text);
}

.portfolio-toolbar {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 1rem;
}

.search-wrap { flex: 1 1 220px; max-width: 340px; }

.search-wrap input {
  width: 100%;
  background: rgba(255,255,255,0.03);
  border: 1px solid var(--line);
  color: var(--text);
  padding: 0.75rem 1rem;
  border-radius: 999px;
  outline: none;
}

.search-wrap input:focus { border-color: rgba(91,140,255,0.55); }
.search-wrap input::placeholder { color: var(--muted); }

.result-count { color: var(--muted); font-size: 0.9rem; }

.product-list {
  border-top: 1px solid var(--line);
}

.product-item {
  display: grid;
  grid-template-columns: 1.15fr 1.55fr auto;
  gap: 1.25rem;
  align-items: center;
  padding: 1.3rem 0.35rem;
  border-bottom: 1px solid var(--line);
  transition: background 0.2s ease, padding 0.2s ease;
}

.product-item:hover {
  background: rgba(255,255,255,0.02);
  padding-left: 0.65rem;
  padding-right: 0.65rem;
  border-radius: 12px;
}

.product-item h3 {
  margin: 0 0 0.2rem;
  font-family: var(--font-display);
  font-size: 1.15rem;
  letter-spacing: -0.02em;
}

.product-meta {
  font-size: 0.8rem;
  color: var(--warm);
  letter-spacing: 0.04em;
  font-weight: 650;
}

.product-item p {
  margin: 0;
  color: var(--muted);
  font-size: 0.94rem;
}

.product-link {
  color: var(--accent-2);
  font-weight: 700;
  font-size: 0.92rem;
  white-space: nowrap;
}

.product-link:hover { color: var(--warm-2); }

.empty-state {
  display: none;
  padding: 2rem 0;
  color: var(--muted);
}

.empty-state.is-visible { display: block; }

/* Contact */
.contact-panel {
  display: grid;
  grid-template-columns: 1.05fr 1fr;
  gap: 1.25rem;
}

.contact-list {
  list-style: none;
  padding: 0;
  margin: 0 0 1.25rem;
  display: grid;
  gap: 1rem;
}

.contact-list li { display: grid; gap: 0.2rem; }

.contact-list span {
  font-size: 0.76rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--muted);
  font-weight: 700;
}

.contact-list a,
.contact-list strong {
  font-size: 1.1rem;
  color: var(--text);
  font-weight: 650;
}

.contact-list a:hover { color: var(--warm-2); }

.contact-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.65rem;
}

.contact-form {
  display: grid;
  gap: 0.85rem;
}

.contact-form label {
  display: grid;
  gap: 0.35rem;
  font-size: 0.88rem;
  color: var(--muted);
}

.contact-form input,
.contact-form textarea {
  background: rgba(255,255,255,0.03);
  border: 1px solid var(--line);
  color: var(--text);
  padding: 0.85rem 0.95rem;
  border-radius: var(--radius-sm);
  outline: none;
}

.contact-form input:focus,
.contact-form textarea:focus {
  border-color: rgba(91,140,255,0.55);
}

.form-note {
  margin: 0;
  font-size: 0.85rem;
  color: var(--muted);
}

/* Footer */
.site-footer {
  border-top: 1px solid var(--line);
  padding: 1.75rem 0 2.4rem;
}

.footer-inner {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  justify-content: space-between;
  color: var(--muted);
  font-size: 0.9rem;
}

.footer-inner strong { color: #d5def7; }

/* Mobile */
@media (max-width: 920px) {
  .nav {
    position: fixed;
    top: var(--header-h);
    left: 0;
    right: 0;
    width: 100%;
    max-width: none;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: 0.75rem 1.25rem 1.35rem;
    background: #070b14;
    border-bottom: 1px solid var(--line);
    box-shadow: 0 24px 48px rgba(0, 0, 0, 0.55);
    z-index: 70;
    transform: translateY(-120%);
    opacity: 0;
    pointer-events: none;
    transition: transform 0.3s ease, opacity 0.3s ease;
  }

  .nav.is-open {
    transform: none;
    opacity: 1;
    pointer-events: auto;
  }

  .nav a {
    padding: 0.95rem 0;
    border-bottom: 1px solid var(--line);
    color: #d7e0f8;
    font-weight: 600;
  }

  .nav-cta {
    margin-top: 0.85rem;
    text-align: center;
    justify-content: center;
    color: #fff !important;
  }

  .nav-toggle { display: inline-grid; place-items: center; }

  .about-shell,
  .ai-grid,
  .featured-grid,
  .ai-list,
  .contact-panel,
  .exp-item,
  .product-item {
    grid-template-columns: 1fr;
  }

  .hero-visual::after { display: none; }
}

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