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

:root {
  --bg: #050816;
  --bg-elevated: #070a12;
  --card: #0b1020;
  --card-soft: #10172b;
  --border-subtle: rgba(148, 163, 184, 0.24);
  --accent: #38bdf8;
  --accent-soft: rgba(56, 189, 248, 0.16);
  --accent-strong: #0ea5e9;
  --text: #e5e7eb;
  --muted: #9ca3af;
  --danger: #f97373;

  --radius-sm: 0.5rem;
  --radius-md: 0.9rem;
  --radius-full: 999px;

  --shadow-soft: 0 18px 45px rgba(15, 23, 42, 0.75);
  --shadow-card: 0 14px 30px rgba(15, 23, 42, 0.7);

  --font-sans: system-ui, -apple-system, BlinkMacSystemFont, "SF Pro Text",
    "Inter", sans-serif;
}

body.dark {
  /* same palette; toggle exists mainly for future adjustments */
}

html,
body {
  margin: 0;
  padding: 0;
  font-family: var(--font-sans);
  color: var(--text);
  background: radial-gradient(circle at top left, #1e293b 0, #020617 48%, #000 100%);
  min-height: 100%;
}

body {
  display: flex;
  flex-direction: column;
}

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

a:hover {
  color: var(--accent-strong);
  text-decoration: underline;
}

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

main {
  flex: 1;
}

.container {
  width: 100%;
  max-width: 1040px;
  margin: 0 auto;
  padding: 0 1.25rem;
}

/* Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 40;
  backdrop-filter: blur(18px);
  background: linear-gradient(
    to bottom,
    rgba(15, 23, 42, 0.9),
    rgba(15, 23, 42, 0.75),
    transparent
  );
  border-bottom: 1px solid rgba(148, 163, 184, 0.3);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.75rem;
  text-decoration: none;
  color: inherit;
}

.brand-text {
  display: flex;
  flex-direction: column;
  gap: 0.1rem;
}

.brand-name {
  font-weight: 600;
  letter-spacing: 0.02em;
}

.brand-subtitle {
  font-size: 0.8rem;
  color: var(--muted);
}

.avatar {
  width: 32px;
  height: 32px;
  border-radius: var(--radius-full);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 0.8rem;
  color: #e0f2fe;
  background: radial-gradient(circle at 0 0, #38bdf8 0, #0f172a 55%, #0b1120 100%);
  box-shadow: 0 0 30px rgba(56, 189, 248, 0.6);
}

.avatar img {
  width: 100%;
  height: 100%;
  border-radius: inherit;
  object-fit: cover;
}

.avatar.large {
  width: 52px;
  height: 52px;
  font-size: 1rem;
}

.main-nav {
  display: flex;
  gap: 0.35rem;
  align-items: center;
}

.main-nav a {
  padding: 0.4rem 0.7rem;
  border-radius: 999px;
  font-size: 0.9rem;
  color: var(--muted);
  text-decoration: none;
  border: 1px solid transparent;
}

.main-nav a:hover {
  color: var(--accent-strong);
  border-color: rgba(148, 163, 184, 0.4);
  background: radial-gradient(circle at top left, rgba(56, 189, 248, 0.2), transparent);
}

@media (max-width: 720px) {
  .site-header {
    border-bottom-width: 0.5px;
  }

  .header-inner {
    gap: 0.5rem;
    height: auto;
    padding: 0.35rem 0;
    flex-wrap: wrap;
  }

  .brand {
    gap: 0.5rem;
  }

  .avatar {
    width: 28px;
    height: 28px;
  }

  .avatar.large {
    width: 44px;
    height: 44px;
  }

  .brand-name {
    font-size: 0.9rem;
  }

  .brand-subtitle {
    display: none;
  }

  .main-nav {
    font-size: 0.8rem;
    gap: 0.25rem;
    margin-left: auto;
    overflow-x: auto;
  }

  .main-nav a {
    padding: 0.3rem 0.55rem;
  }
}

/* Hero */
.hero {
  padding: 4.5rem 0 3rem;
}

.hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.6fr) minmax(0, 1.1fr);
  gap: 1.75rem;
  align-items: center;
}

.hero-text {
  max-width: 32rem;
}

.eyebrow {
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.25em;
  color: var(--muted);
  margin: 0 0 0.5rem;
}

.hero h1 {
  font-size: clamp(2.1rem, 4vw, 2.8rem);
  margin: 0 0 0.8rem;
}

.lead {
  margin: 0 0 1.3rem;
  color: var(--muted);
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-bottom: 1.25rem;
}

.hero-meta {
  margin: 0;
}

.kv {
  display: flex;
  gap: 0.5rem;
  font-size: 0.9rem;
  color: var(--muted);
}

.kv dt {
  min-width: 5rem;
  font-weight: 500;
  color: #e5e7eb;
}

.hero-card {
  background: radial-gradient(circle at top left, #1f2937 0, #020617 45%, #000 100%);
  border-radius: 1.25rem;
  padding: 1.3rem 1.25rem;
  border: 1px solid rgba(148, 163, 184, 0.35);
  box-shadow: var(--shadow-card);
}

.profile {
  display: flex;
  align-items: center;
  gap: 0.9rem;
  margin-bottom: 0.75rem;
}

.profile-name {
  margin: 0;
  font-weight: 600;
}

.profile-sub {
  margin: 0.2rem 0 0;
  font-size: 0.85rem;
  color: var(--muted);
}

.profile-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 0.55rem;
  font-size: 0.85rem;
}

.profile-list .label {
  color: var(--muted);
}

.profile-list .value {
  color: #e5e7eb;
}

@media (max-width: 860px) {
  .hero-grid {
    grid-template-columns: minmax(0, 1fr);
  }
}

/* Sections */
.section {
  padding: 2.75rem 0;
}

.section-alt {
  background: radial-gradient(circle at top, #020617 0, #020617 45%, #000 100%);
}

.section-inner {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.section-header {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 1rem;
  margin-bottom: 1.5rem;
}

.section h2 {
  margin: 0 0 0.5rem;
}

.section-lead {
  margin: 0;
  color: var(--muted);
}

.two-column {
  display: grid;
  grid-template-columns: minmax(0, 1.4fr) minmax(0, 1.1fr);
  gap: 1.75rem;
  align-items: flex-start;
}

@media (max-width: 860px) {
  .two-column {
    grid-template-columns: minmax(0, 1fr);
  }
}

/* Cards and layout helpers */
.card {
  background: radial-gradient(circle at top left, #020617 0, #020617 48%, #000 100%);
  border-radius: var(--radius-md);
  padding: 1.15rem 1.2rem;
  border: 1px solid var(--border-subtle);
  box-shadow: var(--shadow-soft);
}

.stack {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.grid.cards {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1.25rem;
}

@media (max-width: 900px) {
  .grid.cards {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 640px) {
  .grid.cards {
    grid-template-columns: minmax(0, 1fr);
  }
}

.project {
  display: flex;
  flex-direction: column;
}

.project h3 {
  margin-top: 0;
}

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

.project-actions {
  margin-top: 0.5rem;
}

.project-btn {
  align-self: flex-start;
}

@media (max-width: 640px) {
  .project {
    padding: 1rem;
  }

  .project-btn {
    width: 100%;
  }
}

.bullets {
  padding-left: 1.1rem;
  margin: 0.3rem 0 0;
  color: var(--muted);
  font-size: 0.95rem;
}

.bullets.tight {
  margin-top: 0.2rem;
}

.bullets li + li {
  margin-top: 0.25rem;
}

.tags {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  padding: 0;
  margin: 0;
}

.tags li {
  font-size: 0.75rem;
  padding: 0.18rem 0.55rem;
  border-radius: 999px;
  border: 1px solid rgba(148, 163, 184, 0.5);
  background: rgba(15, 23, 42, 0.9);
}

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

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.35rem;
  padding: 0.5rem 1rem;
  border-radius: 999px;
  border: 1px solid transparent;
  font-size: 0.9rem;
  font-weight: 500;
  cursor: pointer;
  text-decoration: none;
  background: transparent;
  color: var(--text);
}

.btn.primary {
  background: linear-gradient(135deg, #38bdf8, #0ea5e9);
  color: #0b1120;
  box-shadow: 0 18px 40px rgba(56, 189, 248, 0.7);
}

.btn.primary:hover {
  filter: brightness(1.05);
}

.btn.ghost {
  border-color: rgba(148, 163, 184, 0.6);
  background: radial-gradient(circle at top left, rgba(56, 189, 248, 0.2), transparent);
  color: #e5e7eb;
}

.btn.ghost:hover {
  border-color: rgba(148, 163, 184, 0.9);
}

.btn.tiny {
  padding: 0.25rem 0.7rem;
  font-size: 0.78rem;
}

button.btn {
  font-family: inherit;
}

/* Contact */
.contact-link {
  margin-top: 0.8rem;
}

/* Footer */
.site-footer {
  border-top: 1px solid rgba(148, 163, 184, 0.3);
  padding: 1.1rem 0 1.4rem;
  background: radial-gradient(circle at top, #020617 0, #020617 40%, #000 100%);
}

.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
  font-size: 0.85rem;
  color: var(--muted);
}

@media (max-width: 640px) {
  .footer-inner {
    flex-direction: column;
    align-items: flex-start;
  }
}

/* Accessibility focus states */
:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

button:focus-visible,
.btn:focus-visible,
.main-nav a:focus-visible {
  box-shadow: 0 0 0 2px rgba(56, 189, 248, 0.8);
}

@media print {
  .site-header,
  .site-footer,
  .btn,
  .main-nav {
    display: none !important;
  }
  body {
    background: #fff;
    color: #000;
  }
  .card,
  .hero-card {
    box-shadow: none;
    border-color: #e5e7eb;
  }
}