/* ===========================
   Google Fonts: Inter
   =========================== */

/* ===========================
   CSS Custom Properties
   =========================== */
:root {
  --color-bg: #f8f9fa;
  --color-text: #212529;
  --color-accent: #0d5c8a;
  --color-accent-hover: #094a72;
  --color-secondary-bg: #e9ecef;
  --color-border: #dee2e6;
  --font-family: 'Inter', sans-serif;
  --max-width: 800px;
  --section-padding: 60px 20px;
  --radius: 8px;
  --transition: 0.2s ease;
}

/* ===========================
   Reset & Base
   =========================== */
*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
}

body {
  background-color: var(--color-bg);
  color: var(--color-text);
  font-family: var(--font-family);
  font-size: 16px;
  line-height: 1.6;
}

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

ul {
  list-style: none;
}

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

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

/* ===========================
   Utility
   =========================== */
.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 20px;
}

/* ===========================
   Navigation
   =========================== */
.navbar {
  position: sticky;
  top: 0;
  z-index: 100;
  background-color: #ffffff;
  border-bottom: 1px solid var(--color-border);
}

.nav-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 20px;
  height: 60px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav-brand {
  font-weight: 700;
  font-size: 1rem;
  color: var(--color-text);
}

.nav-links {
  display: flex;
  gap: 24px;
}

.nav-links a {
  color: var(--color-text);
  font-size: 0.9rem;
  font-weight: 500;
  text-decoration: none;
  transition: color var(--transition);
}

.nav-links a:hover,
.nav-links a:focus {
  color: var(--color-accent);
  text-decoration: none;
}

/* ===========================
   Hero
   =========================== */
.hero {
  background-color: var(--color-secondary-bg);
  padding: var(--section-padding);
}

.hero-inner {
  display: flex;
  align-items: center;
  gap: 40px;
  flex-wrap: wrap;
}

.headshot {
  width: 160px;
  height: 160px;
  border-radius: 50%;
  object-fit: cover;
  flex-shrink: 0;
  border: 4px solid var(--color-accent);
  background-color: var(--color-border);
}

.hero-text {
  flex: 1;
  min-width: 200px;
}

.hero-text h1 {
  font-size: 2rem;
  font-weight: 700;
  line-height: 1.2;
  margin-bottom: 6px;
}

.tagline {
  font-size: 1.1rem;
  font-weight: 500;
  color: var(--color-accent);
  margin-bottom: 16px;
}

.hero-bio {
  font-size: 1rem;
  color: #495057;
  margin-bottom: 24px;
}

.btn-primary {
  display: inline-block;
  background-color: var(--color-accent);
  color: #ffffff;
  font-size: 0.95rem;
  font-weight: 600;
  padding: 10px 24px;
  border-radius: var(--radius);
  text-decoration: none;
  transition: background-color var(--transition);
}

.btn-primary:hover,
.btn-primary:focus {
  background-color: var(--color-accent-hover);
  color: #ffffff;
  text-decoration: none;
}

/* ===========================
   Sections — shared
   =========================== */
section {
  padding: var(--section-padding);
}

section h2 {
  font-size: 1.35rem;
  font-weight: 700;
  color: var(--color-accent);
  margin-bottom: 20px;
  padding-bottom: 8px;
  border-bottom: 2px solid var(--color-border);
}

section p {
  margin-bottom: 14px;
}

/* ===========================
   About
   =========================== */
.about {
  background-color: var(--color-bg);
}

/* ===========================
   Experience
   =========================== */
.experience {
  background-color: var(--color-secondary-bg);
}

.cards {
  display: grid;
  grid-template-columns: 1fr;
  gap: 20px;
}

.card {
  background-color: #ffffff;
  border-radius: var(--radius);
  padding: 24px;
  border: 1px solid var(--color-border);
}

.card h3 {
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: 10px;
  color: var(--color-text);
}

.card p {
  font-size: 0.95rem;
  color: #495057;
  margin-bottom: 0;
}

/* ===========================
   Skills
   =========================== */
.skills {
  background-color: var(--color-bg);
}

.skill-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.tag {
  background-color: var(--color-accent);
  color: #ffffff;
  font-size: 0.875rem;
  font-weight: 500;
  padding: 6px 16px;
  border-radius: 999px;
}

/* ===========================
   Contact
   =========================== */
.contact {
  background-color: var(--color-secondary-bg);
}

.contact-links {
  display: flex;
  flex-direction: column;
  gap: 14px;
  margin-top: 20px;
}

.contact-link {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--color-text);
  text-decoration: none;
  transition: color var(--transition);
}

.contact-link:hover,
.contact-link:focus {
  color: var(--color-accent);
  text-decoration: underline;
}

.contact-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background-color: var(--color-accent);
  color: #ffffff;
  font-size: 0.9rem;
  font-weight: 700;
  flex-shrink: 0;
}

/* ===========================
   Footer
   =========================== */
.site-footer {
  background-color: var(--color-text);
  color: #adb5bd;
  padding: 24px 20px;
  text-align: center;
  font-size: 0.85rem;
}

/* ===========================
   Responsive — Tablet & Up
   =========================== */
@media (min-width: 640px) {
  .cards {
    grid-template-columns: 1fr 1fr;
  }
}

@media (min-width: 768px) {
  .hero-text h1 {
    font-size: 2.4rem;
  }

  .cards {
    grid-template-columns: repeat(3, 1fr);
  }
}

/* ===========================
   Responsive — Mobile
   =========================== */
@media (max-width: 480px) {
  .nav-links {
    gap: 14px;
  }

  .hero-inner {
    flex-direction: column;
    text-align: center;
  }

  .headshot {
    margin: 0 auto;
  }

  .btn-primary {
    width: 100%;
    text-align: center;
  }
}