/* ============================================
   GRACE FUTRAL PORTFOLIO — IMPROVED STYLES
   Preserves brand identity: navy + coral palette
   ============================================ */

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

:root {
  /* Brand Colors */
  --navy: #2B3A67;
  --navy-light: #3D4F7C;
  --coral: #E8A838;
  --coral-light: #F0C060;
  --cream: #FAF8F4;
  --cream-dark: #F0EDE6;
  --white: #FFFFFF;
  --text-dark: #1A1A2E;
  --text-body: #3A3A4A;
  --text-muted: #6B6B7B;
  --accent-blue: #6177B5;
  --accent-blue-light: rgba(97,119,181,0.12);
  --border: #E0DDD6;

  /* Typography Scale */
  --font-display: 'Playfair Display', Georgia, serif;
  --font-body: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', monospace;

  --text-xs: 0.75rem;
  --text-sm: 0.875rem;
  --text-base: 1rem;
  --text-lg: 1.125rem;
  --text-xl: 1.25rem;
  --text-2xl: 1.5rem;
  --text-3xl: 2rem;
  --text-4xl: 2.5rem;
  --text-5xl: 3.25rem;

  --leading-tight: 1.2;
  --leading-normal: 1.6;
  --leading-relaxed: 1.8;

  /* Spacing */
  --space-xs: 0.5rem;
  --space-sm: 1rem;
  --space-md: 1.5rem;
  --space-lg: 2.5rem;
  --space-xl: 4rem;
  --space-2xl: 6rem;

  /* Layout */
  --max-width: 1200px;
  --max-width-narrow: 800px;

  /* Transitions */
  --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* --- Base --- */
html {
  font-size: 16px;
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
}

body {
  font-family: var(--font-body);
  font-size: var(--text-base);
  line-height: var(--leading-normal);
  color: var(--text-body);
  background-color: var(--cream);
}

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

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

a:hover { color: var(--coral); }

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-display);
  color: var(--text-dark);
  line-height: var(--leading-tight);
}

h1 { font-size: var(--text-5xl); margin-bottom: var(--space-lg); }
h2 { font-size: var(--text-3xl); margin-bottom: var(--space-md); }
h3 { font-size: var(--text-2xl); margin-bottom: var(--space-sm); }
h4 { font-size: var(--text-xl); margin-bottom: var(--space-sm); }

p { margin-bottom: var(--space-sm); }

/* --- Utility Classes --- */
.container {
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--space-md);
}

.container--narrow {
  max-width: var(--max-width-narrow);
}

.sr-only {
  position: absolute;
  width: 1px; height: 1px;
  padding: 0; margin: -1px;
  overflow: hidden;
  clip: rect(0,0,0,0);
  border: 0;
}

/* --- Navigation (persistent on every page) --- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--cream);
  border-bottom: 1px solid var(--border);
  padding: var(--space-sm) 0;
}

.site-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.logo {
  display: flex;
  align-items: center;
  gap: var(--space-xs);
}

.logo-mark {
  width: 48px;
  height: 48px;
  background: var(--navy);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--white);
  font-family: var(--font-display);
  font-size: var(--text-xl);
  font-weight: 700;
  font-style: italic;
}

.logo-text {
  font-family: var(--font-display);
  font-size: var(--text-lg);
  font-weight: 700;
  color: var(--navy);
}

.main-nav {
  display: flex;
  gap: var(--space-lg);
}

.main-nav a {
  font-size: var(--text-sm);
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-body);
  position: relative;
  padding-bottom: 4px;
}

.main-nav a::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--coral);
  transition: width var(--transition);
}

.main-nav a:hover::after,
.main-nav a.active::after {
  width: 100%;
}

.main-nav a.active {
  color: var(--coral);
}

/* Mobile Nav Toggle */
.nav-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  width: 32px;
  height: 24px;
  position: relative;
}

.nav-toggle span {
  display: block;
  width: 100%;
  height: 2px;
  background: var(--navy);
  position: absolute;
  left: 0;
  transition: var(--transition);
}

.nav-toggle span:nth-child(1) { top: 0; }
.nav-toggle span:nth-child(2) { top: 50%; transform: translateY(-50%); }
.nav-toggle span:nth-child(3) { bottom: 0; }

/* --- Hero Section --- */
.hero {
  padding: var(--space-2xl) 0;
  text-align: center;
}

.hero h1 {
  font-size: clamp(2.5rem, 5vw, 4rem);
}

.hero .subtitle {
  font-size: var(--text-lg);
  color: var(--text-muted);
  max-width: 600px;
  margin: 0 auto;
}

/* --- Project Grid --- */
.project-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
  gap: var(--space-lg);
  padding: var(--space-xl) 0;
}

.project-card {
  position: relative;
  border-radius: 12px;
  overflow: hidden;
  background: var(--white);
  box-shadow: 0 2px 12px rgba(0,0,0,0.06);
  transition: transform var(--transition), box-shadow var(--transition);
}

.project-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 8px 30px rgba(0,0,0,0.12);
}

.project-card__image {
  width: 100%;
  aspect-ratio: 4/3;
  object-fit: cover;
}

.project-card__overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, transparent 40%, rgba(43,58,103,0.85) 100%);
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  padding: var(--space-md);
  opacity: 0;
  transition: opacity var(--transition);
}

.project-card:hover .project-card__overlay {
  opacity: 1;
}

.project-card__title {
  font-family: var(--font-display);
  font-size: var(--text-xl);
  color: var(--white);
  margin-bottom: 4px;
}

.project-card__subtitle {
  font-size: var(--text-sm);
  color: rgba(255,255,255,0.8);
}

.project-card__label {
  position: absolute;
  top: var(--space-sm);
  left: var(--space-sm);
  background: var(--coral);
  color: var(--white);
  font-size: var(--text-xs);
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  padding: 4px 12px;
  border-radius: 20px;
}

/* --- Case Study Summary Box --- */
.case-summary {
  background: var(--white);
  border: 1px solid var(--border);
  border-left: 4px solid var(--coral);
  border-radius: 8px;
  padding: var(--space-lg);
  margin: var(--space-lg) 0;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: var(--space-md);
}

.case-summary__item {
  display: flex;
  flex-direction: column;
}

.case-summary__label {
  font-size: var(--text-xs);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--coral);
  margin-bottom: 4px;
}

.case-summary__value {
  font-size: var(--text-sm);
  color: var(--text-dark);
  line-height: var(--leading-relaxed);
}

/* --- Case Study Sections --- */
.case-section {
  padding: var(--space-xl) 0;
  border-bottom: 1px solid var(--border);
}

.case-section:last-child {
  border-bottom: none;
}

.case-section__number {
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  color: var(--coral);
  font-weight: 700;
  margin-bottom: var(--space-xs);
  display: block;
}

.case-section h2 {
  font-size: var(--text-3xl);
}

/* Callout Box */
.callout {
  background: var(--accent-blue-light);
  border-radius: 8px;
  padding: var(--space-md);
  margin: var(--space-md) 0;
}

.callout--impact {
  background: linear-gradient(135deg, var(--navy) 0%, var(--navy-light) 100%);
  color: var(--white);
  border-radius: 12px;
  padding: var(--space-lg);
}

.callout--impact h4 {
  color: var(--coral-light);
  font-size: var(--text-sm);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: var(--space-sm);
}

.callout--impact .stat {
  font-family: var(--font-display);
  font-size: var(--text-3xl);
  font-weight: 700;
  color: var(--white);
  margin-bottom: 4px;
}

.callout--impact .stat-desc {
  font-size: var(--text-sm);
  color: rgba(255,255,255,0.8);
}

/* Impact Stats Grid */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: var(--space-md);
  margin: var(--space-md) 0;
}

.stat-card {
  text-align: center;
  padding: var(--space-md);
}

/* --- Image Grid --- */
.image-grid {
  display: grid;
  gap: var(--space-md);
  margin: var(--space-md) 0;
}

.image-grid--2 { grid-template-columns: 1fr 1fr; }
.image-grid--3 { grid-template-columns: repeat(3, 1fr); }

.image-grid img {
  border-radius: 8px;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

/* --- Prev/Next Navigation --- */
.project-nav {
  display: flex;
  justify-content: space-between;
  align-items: stretch;
  gap: var(--space-md);
  padding: var(--space-xl) 0;
  border-top: 1px solid var(--border);
}

.project-nav__link {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding: var(--space-md);
  border: 1px solid var(--border);
  border-radius: 8px;
  transition: background var(--transition), border-color var(--transition);
}

.project-nav__link:hover {
  background: var(--white);
  border-color: var(--coral);
}

.project-nav__link--next {
  text-align: right;
}

.project-nav__direction {
  font-size: var(--text-xs);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--text-muted);
}

.project-nav__title {
  font-family: var(--font-display);
  font-size: var(--text-lg);
  font-weight: 700;
  color: var(--navy);
}

.project-nav__home {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-sm) var(--space-md);
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--text-muted);
  border: 1px solid var(--border);
  border-radius: 8px;
  transition: all var(--transition);
}

.project-nav__home:hover {
  background: var(--navy);
  color: var(--white);
  border-color: var(--navy);
}

/* --- About Page --- */
.about-hero {
  display: grid;
  grid-template-columns: 1fr 1.5fr;
  gap: var(--space-xl);
  padding: var(--space-xl) 0;
  align-items: start;
}

.about-photo {
  border-radius: 12px;
  width: 100%;
  aspect-ratio: 3/4;
  object-fit: cover;
}

.about-intro .specialties {
  font-family: var(--font-display);
  font-size: var(--text-xl);
  font-weight: 700;
  color: var(--navy);
  margin-bottom: var(--space-sm);
}

.about-intro .tools {
  font-size: var(--text-sm);
  color: var(--text-muted);
  margin-bottom: var(--space-lg);
}

/* --- Resume Section --- */
.resume-section {
  padding: var(--space-2xl) 0;
  border-top: 1px solid var(--border);
}

.resume-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--space-xl);
}

.resume-grid {
  display: grid;
  grid-template-columns: 2fr 1fr;
  gap: var(--space-xl);
}

.resume-block {
  margin-bottom: var(--space-lg);
}

.resume-block h3 {
  font-size: var(--text-xl);
  color: var(--navy);
  padding-bottom: var(--space-xs);
  border-bottom: 2px solid var(--coral);
  margin-bottom: var(--space-md);
  display: inline-block;
}

.resume-entry {
  margin-bottom: var(--space-md);
}

.resume-entry__title {
  font-weight: 700;
  color: var(--text-dark);
}

.resume-entry__meta {
  font-size: var(--text-sm);
  color: var(--text-muted);
  font-style: italic;
  margin-bottom: 4px;
}

.resume-entry ul {
  padding-left: var(--space-md);
  font-size: var(--text-sm);
  color: var(--text-body);
}

.resume-entry li {
  margin-bottom: 4px;
  line-height: var(--leading-relaxed);
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 24px;
  border-radius: 8px;
  font-size: var(--text-sm);
  font-weight: 600;
  letter-spacing: 0.04em;
  transition: all var(--transition);
  border: 2px solid transparent;
  cursor: pointer;
}

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

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

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

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

/* --- Contact Form --- */
.connect-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-xl);
  padding: var(--space-xl) 0;
  align-items: start;
}

.form-group {
  margin-bottom: var(--space-md);
}

.form-group label {
  display: block;
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--text-dark);
  margin-bottom: 6px;
}

.form-group input,
.form-group textarea,
.form-group select {
  width: 100%;
  padding: 12px 16px;
  border: 1px solid var(--border);
  border-radius: 8px;
  font-family: var(--font-body);
  font-size: var(--text-base);
  color: var(--text-dark);
  background: var(--white);
  transition: border-color var(--transition), box-shadow var(--transition);
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
  outline: none;
  border-color: var(--navy);
  box-shadow: 0 0 0 3px rgba(43,58,103,0.12);
}

.form-group input::placeholder,
.form-group textarea::placeholder {
  color: var(--text-muted);
}

.form-group textarea {
  min-height: 160px;
  resize: vertical;
}

.form-success {
  display: none;
  background: #E8F5E9;
  color: #2E7D32;
  padding: var(--space-md);
  border-radius: 8px;
  text-align: center;
  font-weight: 600;
}

.contact-info {
  padding: var(--space-lg);
  background: var(--white);
  border-radius: 12px;
  border: 1px solid var(--border);
}

.contact-info h3 {
  margin-bottom: var(--space-md);
}

.contact-info__item {
  display: flex;
  align-items: flex-start;
  gap: var(--space-sm);
  margin-bottom: var(--space-md);
  font-size: var(--text-sm);
}

.contact-info__icon {
  width: 24px;
  height: 24px;
  flex-shrink: 0;
  color: var(--coral);
}

/* --- Footer --- */
.site-footer {
  background: var(--navy);
  color: rgba(255,255,255,0.8);
  padding: var(--space-lg) 0;
  text-align: center;
  font-size: var(--text-sm);
}

.site-footer a {
  color: var(--coral-light);
}

/* ============================================
   RESPONSIVE
   ============================================ */

@media (max-width: 768px) {
  :root {
    --text-5xl: 2.25rem;
    --text-4xl: 1.75rem;
    --text-3xl: 1.5rem;
  }

  .main-nav {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--cream);
    flex-direction: column;
    padding: var(--space-md);
    gap: var(--space-sm);
    border-bottom: 1px solid var(--border);
    box-shadow: 0 4px 12px rgba(0,0,0,0.08);
  }

  .main-nav.open { display: flex; }
  .nav-toggle { display: block; }

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

  .about-hero {
    grid-template-columns: 1fr;
  }

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

  .connect-layout {
    grid-template-columns: 1fr;
  }

  .case-summary {
    grid-template-columns: 1fr 1fr;
  }

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

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

  .image-grid--2,
  .image-grid--3 {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 480px) {
  .case-summary {
    grid-template-columns: 1fr;
  }

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

/* --- Focus Styles (Accessibility) --- */
a:focus-visible,
button:focus-visible,
input:focus-visible,
textarea:focus-visible,
select:focus-visible {
  outline: 3px solid var(--coral);
  outline-offset: 2px;
}

/* --- Skip Link (Accessibility) --- */
.skip-link {
  position: absolute;
  top: -100%;
  left: var(--space-sm);
  background: var(--navy);
  color: var(--white);
  padding: 8px 16px;
  border-radius: 4px;
  z-index: 1000;
  font-size: var(--text-sm);
}

.skip-link:focus {
  top: var(--space-sm);
}