/* ============================================
   elementarydearwatson.com — Stylesheet
   Color palette: Deep navy, warm gold accent,
   clean whites — subtle detective/scholarly feel
   ============================================ */

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

:root {
  --navy: #1a2332;
  --navy-light: #2a3a4e;
  --gold: #c8a45c;
  --gold-light: #e8d5a3;
  --cream: #faf8f4;
  --white: #ffffff;
  --text: #2c2c2c;
  --text-light: #5a5a5a;
  --border: #e0ddd6;
  --shadow: rgba(26, 35, 50, 0.08);
  --max-width: 1100px;
  --font-body: 'Georgia', 'Times New Roman', serif;
  --font-heading: 'Helvetica Neue', 'Arial', sans-serif;
}

html {
  font-size: 17px;
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-body);
  color: var(--text);
  background: var(--cream);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}

a {
  color: var(--navy);
  text-decoration: none;
  border-bottom: 1px solid var(--gold);
  transition: color 0.2s, border-color 0.2s;
}

a:hover {
  color: var(--gold);
  border-color: var(--navy);
}

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

/* --- Typography --- */
h1, h2, h3, h4 {
  font-family: var(--font-heading);
  font-weight: 600;
  color: var(--navy);
  line-height: 1.3;
}

h1 { font-size: 2.2rem; margin-bottom: 0.6em; }
h2 { font-size: 1.6rem; margin-bottom: 0.5em; }
h3 { font-size: 1.2rem; margin-bottom: 0.4em; }
h4 { font-size: 1rem; margin-bottom: 0.3em; font-weight: 700; }

p {
  margin-bottom: 1.2em;
}

/* --- Layout --- */
.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 1.5rem;
}

/* --- Header & Nav --- */
header {
  background: var(--navy);
  border-bottom: 3px solid var(--gold);
  position: sticky;
  top: 0;
  z-index: 100;
}

header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 0;
  padding-bottom: 0;
}

.site-brand {
  display: flex;
  flex-direction: column;
  padding: 0.8rem 0;
}

.site-brand a {
  border: none;
}

.site-title {
  font-family: var(--font-heading);
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--white);
  letter-spacing: 0.02em;
}

.site-tagline {
  font-family: var(--font-body);
  font-size: 0.72rem;
  color: var(--gold-light);
  font-style: italic;
  letter-spacing: 0.03em;
  margin-top: 1px;
}

nav {
  display: flex;
  gap: 0.2rem;
}

nav a {
  font-family: var(--font-heading);
  font-size: 0.85rem;
  color: var(--gold-light);
  border: none;
  padding: 1rem 0.75rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  transition: color 0.2s, background 0.2s;
}

nav a:hover,
nav a.active {
  color: var(--white);
  background: var(--navy-light);
}

/* Hamburger (mobile) */
.nav-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0.5rem;
}

.nav-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--gold-light);
  margin: 5px 0;
  transition: transform 0.3s, opacity 0.3s;
}

/* --- Hero Section (Home page) --- */
.hero {
  background: var(--navy);
  color: var(--white);
  padding: 4rem 0 3.5rem;
  text-align: center;
}

.hero h1 {
  color: var(--white);
  font-size: 2.6rem;
  margin-bottom: 0.3em;
}

.hero .subtitle {
  color: var(--gold-light);
  font-family: var(--font-body);
  font-size: 1.15rem;
  font-style: italic;
  margin-bottom: 1.5em;
}

.hero p {
  color: #c5cdd8;
  max-width: 680px;
  margin: 0 auto 1.5em;
  font-size: 1.05rem;
}

.hero .cta-row {
  display: flex;
  gap: 1rem;
  justify-content: center;
  flex-wrap: wrap;
}

/* --- Buttons --- */
.btn {
  display: inline-block;
  font-family: var(--font-heading);
  font-size: 0.9rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  padding: 0.7rem 1.6rem;
  border: 2px solid transparent;
  border-radius: 3px;
  cursor: pointer;
  transition: all 0.2s;
  text-decoration: none;
}

.btn-primary {
  background: var(--gold);
  color: var(--navy);
  border-color: var(--gold);
}

.btn-primary:hover {
  background: var(--gold-light);
  border-color: var(--gold-light);
  color: var(--navy);
}

.btn-outline {
  background: transparent;
  color: var(--gold-light);
  border-color: var(--gold-light);
}

.btn-outline:hover {
  background: var(--gold-light);
  color: var(--navy);
}

a.btn {
  border-bottom: none;
}

/* --- Page Header (non-home pages) --- */
.page-header {
  background: var(--navy);
  color: var(--white);
  padding: 2.5rem 0 2rem;
  text-align: center;
}

.page-header h1 {
  color: var(--white);
  margin-bottom: 0.2em;
}

.page-header .lead {
  color: var(--gold-light);
  font-style: italic;
  font-size: 1.05rem;
}

/* --- Content Sections --- */
.content {
  padding: 3rem 0;
}

.content section {
  margin-bottom: 2.5rem;
}

/* Card grid for research / highlights */
.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 1.5rem;
  margin-top: 1.5rem;
}

.card {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: 1.5rem;
  box-shadow: 0 2px 8px var(--shadow);
  transition: box-shadow 0.2s;
}

.card:hover {
  box-shadow: 0 4px 16px rgba(26, 35, 50, 0.12);
}

.card h3 {
  margin-bottom: 0.5em;
}

.card .tag {
  display: inline-block;
  font-family: var(--font-heading);
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  background: var(--gold-light);
  color: var(--navy);
  padding: 0.15rem 0.5rem;
  border-radius: 2px;
  margin-bottom: 0.75rem;
}

.card .methods, .card .data, .card .policy {
  font-size: 0.9rem;
  color: var(--text-light);
  margin-bottom: 0.3em;
}

.card .methods strong, .card .data strong, .card .policy strong {
  color: var(--navy);
}

/* Two-column layout (about page, etc.) */
.two-col {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2.5rem;
  align-items: start;
}

/* Photo placeholder */
.photo-placeholder {
  width: 200px;
  height: 200px;
  border-radius: 50%;
  background: var(--navy-light);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--gold-light);
  font-family: var(--font-heading);
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin: 0 auto 1.5rem;
  border: 3px solid var(--gold);
}

/* --- Timeline / Experience --- */
.timeline-item {
  position: relative;
  padding-left: 1.5rem;
  margin-bottom: 1.5rem;
  border-left: 2px solid var(--gold);
}

.timeline-item h3 {
  margin-bottom: 0.15em;
}

.timeline-item .dates {
  font-family: var(--font-heading);
  font-size: 0.8rem;
  color: var(--text-light);
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

/* --- Table (CV page) --- */
.cv-table {
  width: 100%;
  border-collapse: collapse;
  margin: 1rem 0;
}

.cv-table th {
  text-align: left;
  font-family: var(--font-heading);
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--text-light);
  padding: 0.5rem 0;
  border-bottom: 2px solid var(--navy);
}

.cv-table td {
  padding: 0.6rem 0;
  border-bottom: 1px solid var(--border);
  vertical-align: top;
}

/* --- Contact Form --- */
.contact-form {
  max-width: 550px;
}

.contact-form label {
  display: block;
  font-family: var(--font-heading);
  font-size: 0.85rem;
  font-weight: 600;
  margin-bottom: 0.3rem;
  color: var(--navy);
}

.contact-form input,
.contact-form textarea {
  width: 100%;
  font-family: var(--font-body);
  font-size: 0.95rem;
  padding: 0.6rem 0.8rem;
  border: 1px solid var(--border);
  border-radius: 3px;
  background: var(--white);
  margin-bottom: 1rem;
  transition: border-color 0.2s;
}

.contact-form input:focus,
.contact-form textarea:focus {
  outline: none;
  border-color: var(--gold);
}

.contact-form textarea {
  min-height: 140px;
  resize: vertical;
}

/* --- Footer --- */
footer {
  background: var(--navy);
  color: #8a96a8;
  border-top: 3px solid var(--gold);
  padding: 1.5rem 0;
  font-family: var(--font-heading);
  font-size: 0.78rem;
  text-align: center;
  letter-spacing: 0.03em;
}

footer a {
  color: var(--gold-light);
  border-bottom-color: transparent;
}

footer a:hover {
  color: var(--white);
}

/* --- Responsive --- */
@media (max-width: 768px) {
  html { font-size: 16px; }

  header .container {
    flex-wrap: wrap;
  }

  .nav-toggle {
    display: block;
  }

  nav {
    display: none;
    width: 100%;
    flex-direction: column;
    background: var(--navy-light);
  }

  nav.open {
    display: flex;
  }

  nav a {
    padding: 0.75rem 1rem;
    border-top: 1px solid rgba(255,255,255,0.05);
  }

  .hero h1 {
    font-size: 1.9rem;
  }

  .two-col {
    grid-template-columns: 1fr;
  }

  .card-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 480px) {
  .hero {
    padding: 2.5rem 0 2rem;
  }

  .hero h1 {
    font-size: 1.6rem;
  }
}