/* Portfolio — Aakash Shukla */
:root {
  --bg: #0b0f14;
  --bg-elevated: #121820;
  --surface: #161d27;
  --border: rgba(255, 255, 255, 0.08);
  --text: #e8edf4;
  --muted: #8b9aaf;
  --accent: #38bdf8;
  --accent-dim: rgba(56, 189, 248, 0.15);
  --warm: #fbbf24;
  --radius: 12px;
  --font-sans: "DM Sans", system-ui, sans-serif;
  --font-mono: "JetBrains Mono", ui-monospace, monospace;
  --max: 1080px;
  --space: clamp(1rem, 4vw, 2rem);
}

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: var(--font-sans);
  font-size: 1.05rem;
  line-height: 1.65;
  color: var(--text);
  background: var(--bg);
  background-image:
    radial-gradient(ellipse 120% 80% at 50% -30%, rgba(56, 189, 248, 0.12), transparent),
    radial-gradient(ellipse 80% 50% at 100% 50%, rgba(251, 191, 36, 0.04), transparent);
  min-height: 100vh;
}

a {
  color: var(--accent);
  text-decoration: none;
}
a:hover {
  text-decoration: underline;
}

.skip-link {
  position: absolute;
  left: -9999px;
  z-index: 999;
  padding: 0.5rem 1rem;
  background: var(--accent);
  color: var(--bg);
}
.skip-link:focus {
  left: 1rem;
  top: 1rem;
}

/* Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  backdrop-filter: blur(12px);
  background: rgba(11, 15, 20, 0.85);
  border-bottom: 1px solid var(--border);
}

.header-inner {
  max-width: var(--max);
  margin: 0 auto;
  padding: 0.75rem var(--space);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.logo {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  font-weight: 600;
  letter-spacing: 0.02em;
  color: var(--text);
}
.logo span {
  color: var(--accent);
}

.nav-toggle {
  display: none;
}

.nav-links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem 1rem;
  list-style: none;
  margin: 0;
  padding: 0;
}

.nav-links a {
  font-size: 0.9rem;
  color: var(--muted);
}
.nav-links a:hover {
  color: var(--text);
  text-decoration: none;
}

@media (max-width: 768px) {
  .nav-toggle {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 44px;
    height: 44px;
    border: 1px solid var(--border);
    border-radius: 8px;
    background: var(--surface);
    cursor: pointer;
    color: var(--text);
    font-size: 1.25rem;
  }

  .nav-panel {
    display: none;
    width: 100%;
    flex-basis: 100%;
    flex-direction: column;
    gap: 0.5rem;
    padding: 0.75rem 0 0;
  }

  .site-header.is-open .nav-panel {
    display: flex;
  }

  .header-inner {
    flex-wrap: wrap;
  }

  .nav-links {
    flex-direction: column;
    gap: 0.5rem;
  }
}

@media (min-width: 769px) {
  .nav-panel {
    display: flex !important;
    align-items: center;
    width: auto;
    flex-basis: auto;
    padding: 0;
  }

  .nav-toggle {
    display: none !important;
  }
}

/* Sections */
main {
  max-width: var(--max);
  margin: 0 auto;
  padding: var(--space);
}

section {
  padding: clamp(2.5rem, 6vw, 4rem) 0;
  border-bottom: 1px solid var(--border);
}
section:last-of-type {
  border-bottom: none;
}

.section-label {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--accent);
  margin: 0 0 0.5rem;
}

h1,
h2,
h3 {
  font-weight: 700;
  line-height: 1.2;
  margin: 0 0 0.75rem;
}

h2 {
  font-size: clamp(1.5rem, 3vw, 2rem);
}

h3 {
  font-size: 1.15rem;
}

p {
  margin: 0 0 1rem;
  color: var(--muted);
}

/* Hero */
.hero {
  padding-top: clamp(2rem, 5vw, 3.5rem);
  padding-bottom: clamp(3rem, 8vw, 5rem);
}

.hero-badge {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.06em;
  padding: 0.35rem 0.65rem;
  border-radius: 999px;
  background: var(--accent-dim);
  color: var(--accent);
  border: 1px solid rgba(56, 189, 248, 0.25);
  margin-bottom: 1rem;
}

.hero h1 {
  font-size: clamp(2.25rem, 6vw, 3.35rem);
  letter-spacing: -0.02em;
  color: var(--text);
  max-width: 18ch;
}

.hero-tagline {
  font-size: clamp(1.05rem, 2.2vw, 1.25rem);
  color: var(--muted);
  max-width: 52ch;
  margin-bottom: 1.5rem;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-bottom: 2rem;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.65rem 1.15rem;
  border-radius: 10px;
  font-weight: 600;
  font-size: 0.95rem;
  border: 1px solid transparent;
  cursor: pointer;
  transition: transform 0.15s ease, background 0.15s ease;
}
.btn:hover {
  transform: translateY(-1px);
  text-decoration: none;
}

.btn-primary {
  background: linear-gradient(135deg, #0ea5e9, #0284c7);
  color: #fff;
  box-shadow: 0 4px 24px rgba(14, 165, 233, 0.35);
}

.btn-secondary {
  background: var(--surface);
  color: var(--text);
  border-color: var(--border);
}

.hero-meta {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 1rem;
  padding: 1.25rem;
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: var(--radius);
}

.hero-meta dt {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--muted);
  margin: 0 0 0.25rem;
}

.hero-meta dd {
  margin: 0;
  color: var(--text);
  font-size: 0.95rem;
}

/* Cards / timeline */
.timeline {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.35rem 1.5rem;
}

.card-header {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: 0.5rem;
  margin-bottom: 0.5rem;
}

.card-title {
  margin: 0;
  font-size: 1.12rem;
  color: var(--text);
}

.card-company {
  color: var(--accent);
  font-weight: 600;
  font-size: 0.95rem;
}

.card-meta {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--muted);
}

.card ul {
  margin: 0.75rem 0 0;
  padding-left: 1.15rem;
  color: var(--muted);
}

.card li {
  margin-bottom: 0.4rem;
}

.pill {
  display: inline-block;
  font-size: 0.65rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  padding: 0.2rem 0.45rem;
  border-radius: 4px;
  background: rgba(251, 191, 36, 0.12);
  color: var(--warm);
  border: 1px solid rgba(251, 191, 36, 0.25);
}

/* Skills */
.skill-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 1rem;
}

.skill-block h3 {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--muted);
  margin-bottom: 0.65rem;
}

.tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem;
}

.tag {
  font-size: 0.82rem;
  padding: 0.35rem 0.65rem;
  border-radius: 8px;
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  color: var(--text);
}

/* Projects */
.project-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.25rem;
}

.project-card {
  display: flex;
  flex-direction: column;
  height: 100%;
  padding: 1.35rem;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  transition: border-color 0.2s ease;
}

.project-card:hover {
  border-color: rgba(56, 189, 248, 0.35);
}

.project-card h3 {
  margin-bottom: 0.35rem;
  color: var(--text);
}

.project-stack {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--muted);
  margin-bottom: 0.75rem;
}

.project-card p {
  flex: 1;
  font-size: 0.92rem;
}

.project-links {
  margin-top: auto;
  padding-top: 1rem;
  display: flex;
  gap: 0.75rem;
}

/* Certs */
.cert-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  gap: 0.75rem;
}

.cert-list li {
  padding: 1rem 1.15rem;
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.cert-name {
  font-weight: 600;
  color: var(--text);
}

.cert-detail {
  font-size: 0.85rem;
  color: var(--muted);
}

/* Contact */
.contact-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 1rem;
}

.contact-card {
  padding: 1.25rem;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  background: var(--surface);
}

.contact-card strong {
  display: block;
  color: var(--text);
  margin-bottom: 0.35rem;
}

footer {
  padding: 2rem var(--space) 3rem;
  text-align: center;
  color: var(--muted);
  font-size: 0.85rem;
}