/* Global reset and theme */
:root {
  color-scheme: light;
  --bg: #f8f6f1;
  --surface: #ffffff;
  --surface-alt: #f3efe8;
  --text: #1f2937;
  --muted: #475569;
  --accent: #183b72;
  --accent-2: #2b6cb0;
  --border: rgba(24, 59, 114, 0.14);
  --shadow: 0 14px 40px rgba(15, 23, 42, 0.08);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: Georgia, 'Times New Roman', Times, serif;
  background: var(--bg);
  color: var(--text);
}

body.dark-mode {
  --bg: #0b1220;
  --surface: #101a32;
  --surface-alt: #0c1a2d;
  --text: #eef4ff;
  --muted: #9bb6d6;
  --accent: #7dd3fc;
  --accent-2: #8b5cf6;
  --border: rgba(125, 211, 252, 0.16);
  --shadow: 0 18px 50px rgba(0, 0, 0, 0.24);
}

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

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

button,
input {
  font: inherit;
}

.page-shell {
  max-width: 1080px;
  margin: 0 auto;
  padding: 0 24px 44px;
}

header.hero {
  padding: 36px 0 52px;
}

.site-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  flex-wrap: wrap;
}

.brand {
  font-size: 1.05rem;
  letter-spacing: 0.25em;
  text-transform: uppercase;
  color: var(--accent);
  font-weight: 700;
}

.site-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  align-items: center;
}

.site-nav a,
.site-nav button {
  padding: 10px 16px;
  border-radius: 999px;
  transition: background 0.2s ease, color 0.2s ease, border-color 0.2s ease;
  color: var(--muted);
  border: 1px solid transparent;
}

.site-nav a:hover,
.site-nav button:hover,
.site-nav a.active {
  background: rgba(24, 59, 114, 0.08);
  color: var(--accent);
}

.hero-content {
  max-width: 700px;
  margin-top: 46px;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  color: var(--accent);
  font-size: 0.95rem;
  text-transform: uppercase;
  letter-spacing: 0.18em;
}

.hero-content h1,
.section-heading h2,
.project-card h3,
.feature-card h4 {
  font-family: Georgia, 'Times New Roman', Times, serif;
}

.hero-content h1 {
  margin: 18px 0 16px;
  font-size: clamp(3rem, 4vw, 4.4rem);
  line-height: 1.02;
}

.hero-content p {
  max-width: 620px;
  line-height: 1.9;
  color: var(--muted);
}

.hero-actions {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
  margin-top: 28px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 0 22px;
  border-radius: 999px;
  border: 1px solid transparent;
  cursor: pointer;
  text-decoration: none;
  font-weight: 600;
  transition: transform 0.2s ease, box-shadow 0.2s ease, background 0.2s ease;
}

.button:hover {
  transform: translateY(-1px);
}

.button.primary {
  color: #ffffff;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  box-shadow: 0 14px 30px rgba(43, 108, 176, 0.25);
}

.button.secondary {
  color: var(--accent);
  border-color: rgba(24, 59, 114, 0.15);
  background: var(--surface);
}

.section-heading {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.section-heading span {
  color: var(--accent);
  font-size: 0.95rem;
  text-transform: uppercase;
  letter-spacing: 0.18em;
}

.section-heading h2 {
  margin: 0;
  font-size: 2.15rem;
}

.panel {
  margin-top: 48px;
  padding: 36px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

.projects .project-list {
  display: grid;
  gap: 18px;
  margin-top: 24px;
}

.project-card {
  padding: 24px;
  border-radius: 22px;
  border: 1px solid rgba(24, 59, 114, 0.12);
  background: var(--surface-alt);
}

.project-card h3 {
  margin: 0 0 10px;
}

.project-card p {
  margin: 0 0 12px;
  color: var(--muted);
  line-height: 1.75;
}

.project-card a {
  color: var(--accent);
}

.feature-grid {
  display: grid;
  gap: 18px;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  margin-top: 24px;
}

.feature-card {
  background: var(--surface-alt);
  border: 1px solid rgba(24, 59, 114, 0.1);
  border-radius: 22px;
  padding: 24px;
}

.feature-card h4 {
  margin-top: 0;
}

.contact-footer {
  display: grid;
  gap: 16px;
  align-items: start;
}

.contact-footer p,
.contact-footer a {
  margin: 0;
  color: var(--muted);
}

footer {
  margin-top: 52px;
  padding: 28px 0 16px;
  border-top: 1px solid rgba(24, 59, 114, 0.12);
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 16px;
  color: var(--muted);
}

footer small {
  display: block;
}

.toast {
  position: fixed;
  left: 50%;
  bottom: 24px;
  transform: translateX(-50%) translateY(16px);
  background: rgba(24, 59, 114, 0.96);
  color: #ffffff;
  padding: 14px 18px;
  border-radius: 999px;
  border: 1px solid rgba(43, 108, 176, 0.18);
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.2s ease, transform 0.2s ease;
}

.toast.show {
  opacity: 1;
  transform: translateX(-50%) translateY(0);
}

@media (max-width: 820px) {
  .page-shell {
    padding: 0 18px 32px;
  }

  .hero-content h1 {
    font-size: clamp(2.6rem, 7vw, 3.4rem);
  }

  .site-nav {
    width: 100%;
    justify-content: center;
  }
}

@media (max-width: 560px) {
  .hero-actions {
    flex-direction: column;
    align-items: stretch;
  }

  .button {
    width: 100%;
  }
}