/* ==========================================================================
   Tom Nguyen Landscaping — "The Architectural Conservatory"
   Design tokens from Stitch: Forest greens + warm earth tones
   Fonts: Manrope (headings) + Public Sans (body)
   Rule: No 1px borders — depth via background color shifts only
   ========================================================================== */

/* ---------- Design Tokens ---------- */
:root {
  /* Primary — deep forest greens */
  --primary: #173124;
  --primary-container: #2d4739;
  --on-primary: #ffffff;

  /* Tertiary — warm earth accent */
  --tertiary: #3f2604;
  --tertiary-container: #583c18;
  --tertiary-fixed: #ffddb9;

  /* Surfaces — cream/warm whites */
  --surface: #fbf9f5;
  --surface-container-lowest: #ffffff;
  --surface-container-low: #f5f3ef;
  --surface-container: #efeeea;
  --surface-container-high: #eae8e4;
  --surface-container-highest: #e4e2de;
  --surface-dim: #dbdad6;

  /* Text */
  --on-surface: #1b1c1a;
  --on-surface-variant: #424844;
  --outline: #727973;
  --outline-variant: #c2c8c2;

  /* Secondary */
  --secondary-container: #e7e2d9;
  --on-secondary-container: #67645d;

  /* Functional */
  --error: #ba1a1a;

  /* Rounding */
  --radius-sm: 0.25rem;
  --radius-md: 0.5rem;
  --radius-lg: 1rem;
  --radius-xl: 1.5rem;
  --radius-full: 9999px;

  /* Spacing scale (scale 3 from Stitch) */
  --space-xs: 0.5rem;
  --space-sm: 0.75rem;
  --space-md: 1rem;
  --space-lg: 1.5rem;
  --space-xl: 2rem;
  --space-2xl: 3rem;
  --space-3xl: 4rem;
  --space-4xl: 6rem;
}

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

html {
  scroll-behavior: smooth;
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { transition: none !important; animation: none !important; }
}

body {
  font-family: 'Public Sans', system-ui, sans-serif;
  font-size: 1rem;
  line-height: 1.6;
  color: var(--on-surface);
  background-color: var(--surface);
  -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; height: auto; display: block; }
a { color: inherit; text-decoration: none; }
ul { list-style: none; }

/* ---------- Skip Link ---------- */
.skip-link {
  position: absolute;
  top: -100%;
  left: 1rem;
  background: var(--primary);
  color: var(--on-primary);
  padding: 0.5rem 1rem;
  border-radius: var(--radius-md);
  z-index: 1000;
  font-size: 0.875rem;
}
.skip-link:focus {
  top: 1rem;
}

/* ---------- Typography ---------- */
h1, h2, h3, h4 {
  font-family: 'Manrope', sans-serif;
  font-weight: 700;
  line-height: 1.15;
  letter-spacing: -0.02em;
  color: var(--on-surface);
}

h1 { font-size: clamp(2.5rem, 6vw, 4rem); font-weight: 800; }
h2 { font-size: clamp(1.75rem, 4vw, 2.75rem); }
h3 { font-size: clamp(1.25rem, 2.5vw, 1.5rem); }

.eyebrow {
  font-family: 'Public Sans', sans-serif;
  font-size: 0.8125rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--tertiary);
  margin-bottom: var(--space-sm);
}

/* ---------- Layout ---------- */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--space-lg);
}

.section {
  padding: var(--space-4xl) 0;
}

.section-header {
  margin-bottom: var(--space-3xl);
  text-align: center;
}

.section-sub {
  font-size: 1.0625rem;
  color: var(--on-surface-variant);
  max-width: 540px;
  margin: var(--space-md) auto 0;
}

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-family: 'Public Sans', sans-serif;
  font-size: 0.9375rem;
  font-weight: 600;
  padding: 0.875rem 2rem;
  border-radius: var(--radius-full);
  border: none;
  cursor: pointer;
  transition: opacity 0.2s, transform 0.2s;
}
.btn:hover { opacity: 0.9; transform: translateY(-1px); }
.btn:active { transform: translateY(0); }

.btn-primary {
  background: linear-gradient(135deg, var(--primary), var(--primary-container));
  color: var(--on-primary);
}

.btn-secondary {
  background: var(--secondary-container);
  color: var(--on-secondary-container);
  border-radius: var(--radius-md);
}

.btn-full { width: 100%; }

/* ---------- Navigation ---------- */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  background: rgba(251, 249, 245, 0.8);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  transition: background 0.3s;
}
.nav.scrolled {
  background: rgba(251, 249, 245, 0.95);
  box-shadow: 0 8px 24px rgba(27, 28, 26, 0.06);
}

.nav-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: var(--space-md) var(--space-lg);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav-logo {
  font-family: 'Manrope', sans-serif;
  font-weight: 800;
  font-size: 1.25rem;
  color: var(--primary);
  letter-spacing: -0.02em;
}
.nav-logo-full {
  font-weight: 500;
  margin-left: 0.25rem;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: var(--space-xl);
}
.nav-links a {
  font-family: 'Public Sans', sans-serif;
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--on-surface-variant);
  transition: color 0.2s;
}
.nav-links a:hover { color: var(--primary); }
.nav-cta {
  background: var(--primary);
  color: var(--on-primary) !important;
  padding: 0.625rem 1.25rem;
  border-radius: var(--radius-full);
}
.nav-cta:hover { opacity: 0.9; }

.nav-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  width: 28px;
  height: 20px;
  position: relative;
}
.nav-toggle span {
  display: block;
  width: 100%;
  height: 2px;
  background: var(--on-surface);
  position: absolute;
  left: 0;
  transition: transform 0.3s, opacity 0.3s;
}
.nav-toggle span:nth-child(1) { top: 0; }
.nav-toggle span:nth-child(2) { top: 9px; }
.nav-toggle span:nth-child(3) { top: 18px; }
.nav-toggle.active span:nth-child(1) { transform: translateY(9px) rotate(45deg); }
.nav-toggle.active span:nth-child(2) { opacity: 0; }
.nav-toggle.active span:nth-child(3) { transform: translateY(-9px) rotate(-45deg); }

/* ---------- Hero ---------- */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 8rem var(--space-lg) var(--space-4xl);
  background: linear-gradient(180deg, var(--surface) 0%, var(--surface-container-low) 100%);
  /* TODO: Replace with real hero background image */
  /* background-image: url('/images/hero-bg.jpg'); */
}

.hero-content {
  max-width: 720px;
  margin: 0 auto;
}

.hero-eyebrow {
  font-family: 'Public Sans', sans-serif;
  font-size: 0.8125rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--tertiary);
  margin-bottom: var(--space-lg);
}

.hero h1 {
  margin-bottom: var(--space-xl);
  color: var(--primary);
}

.hero-sub {
  font-size: 1.125rem;
  color: var(--on-surface-variant);
  max-width: 520px;
  margin: 0 auto var(--space-2xl);
  line-height: 1.7;
}

.hero-actions {
  display: flex;
  gap: var(--space-md);
  flex-wrap: wrap;
  justify-content: center;
}

/* ---------- Stats ---------- */
.section-stats {
  padding: var(--space-3xl) 0;
  background: var(--primary);
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-xl);
  text-align: center;
}

.stat-number {
  display: block;
  font-family: 'Manrope', sans-serif;
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 800;
  color: var(--on-primary);
  letter-spacing: -0.02em;
}

.stat-label {
  font-size: 0.875rem;
  color: rgba(255, 255, 255, 0.7);
  margin-top: var(--space-xs);
  display: block;
}

/* ---------- Services ---------- */
.section-services {
  background: var(--surface-container-low);
}

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

.service-card {
  background: var(--surface-container-lowest);
  border-radius: var(--radius-xl);
  padding: var(--space-2xl);
  transition: transform 0.2s;
}
.service-card:hover {
  transform: translateY(-4px);
}

.service-card-icon {
  width: 56px;
  height: 56px;
  background: var(--surface-container-low);
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--primary);
  margin-bottom: var(--space-lg);
}

.service-card h3 {
  margin-bottom: var(--space-sm);
}

.service-card > p {
  color: var(--on-surface-variant);
  font-size: 0.9375rem;
  margin-bottom: var(--space-lg);
}

.service-features li {
  font-size: 0.875rem;
  color: var(--on-surface-variant);
  padding: var(--space-xs) 0;
  padding-left: 1.25rem;
  position: relative;
}
.service-features li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 50%;
  width: 6px;
  height: 6px;
  background: var(--primary-container);
  border-radius: 50%;
  transform: translateY(-50%);
}

/* ---------- Portfolio ---------- */
.section-portfolio {
  background: var(--surface);
}

.portfolio-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-xl);
  margin-bottom: var(--space-3xl);
}

.portfolio-card {
  border-radius: var(--radius-xl);
  overflow: hidden;
  background: var(--surface-container-low);
}

.portfolio-card-featured {
  grid-column: 1 / -1;
}

.portfolio-img {
  height: 280px;
  background-color: var(--surface-container-high);
  background-size: cover;
  background-position: center;
}

.portfolio-card-featured .portfolio-img {
  height: 400px;
}

.portfolio-info {
  padding: var(--space-lg) var(--space-xl);
}

.portfolio-tag {
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--tertiary);
}

.portfolio-info h3 {
  margin-top: var(--space-xs);
  font-size: 1.25rem;
}

.portfolio-info p {
  color: var(--on-surface-variant);
  font-size: 0.9375rem;
  margin-top: var(--space-sm);
}

.section-cta {
  text-align: center;
}

.portfolio-callout {
  font-family: 'Manrope', sans-serif;
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--primary);
  margin-bottom: var(--space-lg);
}

/* ---------- About ---------- */
.section-about {
  background: var(--surface-container-low);
}

.section-about .section-header {
  text-align: left;
}

.about-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-3xl);
  align-items: center;
}

.about-text p {
  color: var(--on-surface-variant);
  font-size: 1.0625rem;
  line-height: 1.7;
}
.about-text p + p {
  margin-top: var(--space-lg);
}

.about-img {
  height: 400px;
  background-color: var(--surface-container-high);
  background-size: cover;
  background-position: center;
  border-radius: var(--radius-xl) var(--radius-sm) var(--radius-xl) var(--radius-sm);
}

/* ---------- Testimonials ---------- */
.section-testimonials {
  background: var(--surface);
}

.testimonials-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-xl);
}

.testimonial-card {
  background: var(--surface-container-low);
  border-radius: var(--radius-xl);
  padding: var(--space-2xl);
}

.testimonial-stars {
  color: var(--tertiary-fixed);
  font-size: 1.125rem;
  letter-spacing: 0.1em;
  margin-bottom: var(--space-lg);
}

.testimonial-card p {
  font-size: 1rem;
  line-height: 1.7;
  color: var(--on-surface);
  font-style: italic;
  margin-bottom: var(--space-xl);
}

.testimonial-card footer {
  display: flex;
  flex-direction: column;
}

.testimonial-name {
  font-family: 'Manrope', sans-serif;
  font-weight: 700;
  font-size: 0.9375rem;
  font-style: normal;
}

.testimonial-role {
  font-size: 0.8125rem;
  color: var(--on-surface-variant);
  margin-top: 2px;
}

/* ---------- FAQ ---------- */
.section-faq {
  background: var(--surface-container-low);
}

.faq-list {
  max-width: 720px;
  margin: 0 auto;
}

.faq-item {
  padding: var(--space-lg) 0;
}
.faq-item + .faq-item {
  /* Using background shift instead of border */
}

.faq-item summary {
  font-family: 'Manrope', sans-serif;
  font-weight: 600;
  font-size: 1.0625rem;
  cursor: pointer;
  list-style: none;
  display: flex;
  align-items: center;
  justify-content: space-between;
  color: var(--on-surface);
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::after {
  content: '+';
  font-size: 1.5rem;
  font-weight: 400;
  color: var(--outline);
  transition: transform 0.2s;
  flex-shrink: 0;
  margin-left: var(--space-md);
}
.faq-item[open] summary::after {
  transform: rotate(45deg);
}

.faq-item p {
  color: var(--on-surface-variant);
  font-size: 0.9375rem;
  line-height: 1.7;
  margin-top: var(--space-md);
  padding-right: var(--space-2xl);
}

/* ---------- Contact ---------- */
.section-contact {
  background: var(--surface);
}

.contact-details {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-xl);
  margin-bottom: var(--space-2xl);
  justify-content: center;
}

.contact-item {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  font-size: 0.9375rem;
  color: var(--on-surface-variant);
}
.contact-item svg { color: var(--primary); flex-shrink: 0; }
a.contact-item:hover { color: var(--primary); }

.contact-form {
  max-width: 720px;
  margin: 0 auto;
  position: relative;
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-lg);
  margin-bottom: var(--space-lg);
}

.form-group {
  display: flex;
  flex-direction: column;
  margin-bottom: var(--space-lg);
}
.form-row .form-group { margin-bottom: 0; }

.form-group label {
  font-family: 'Public Sans', sans-serif;
  font-size: 0.8125rem;
  font-weight: 500;
  color: var(--on-surface-variant);
  margin-bottom: var(--space-xs);
}

.required { color: var(--error); }

.form-group input,
.form-group select,
.form-group textarea {
  font-family: 'Public Sans', sans-serif;
  font-size: 1rem;
  padding: 0.875rem 1rem;
  background: var(--surface-container-highest);
  color: var(--on-surface);
  border: none;
  border-radius: var(--radius-md);
  outline: none;
  transition: box-shadow 0.2s;
}
.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  box-shadow: 0 0 0 2px rgba(23, 49, 36, 0.2);
}

.form-group textarea { resize: vertical; min-height: 120px; }
.form-group select { cursor: pointer; }

.thank-you-message {
  text-align: center;
  padding: var(--space-3xl) 0;
}
.thank-you-message h3 {
  color: var(--primary);
  margin-bottom: var(--space-md);
}

/* ---------- Footer ---------- */
.footer {
  background: var(--primary);
  color: rgba(255, 255, 255, 0.8);
  padding: var(--space-4xl) 0 var(--space-xl);
}

.footer-inner {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: var(--space-3xl);
  margin-bottom: var(--space-3xl);
}

.footer-logo {
  font-family: 'Manrope', sans-serif;
  font-weight: 800;
  font-size: 1.25rem;
  color: var(--on-primary);
  margin-bottom: var(--space-md);
}

.footer-tagline {
  font-size: 0.9375rem;
  line-height: 1.6;
  max-width: 360px;
}

.footer-links h4 {
  font-family: 'Public Sans', sans-serif;
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: rgba(255, 255, 255, 0.5);
  margin-bottom: var(--space-lg);
}

.footer-links a {
  display: block;
  font-size: 0.875rem;
  color: rgba(255, 255, 255, 0.7);
  padding: var(--space-xs) 0;
  transition: color 0.2s;
}
.footer-links a:hover { color: var(--on-primary); }

.footer-bottom {
  padding-top: var(--space-xl);
  font-size: 0.8125rem;
  color: rgba(255, 255, 255, 0.4);
}

/* ==========================================================================
   Responsive
   ========================================================================== */

@media (max-width: 1024px) {
  .services-grid { grid-template-columns: 1fr 1fr; }
  .testimonials-grid { grid-template-columns: 1fr 1fr; }
  .footer-inner { grid-template-columns: 1fr 1fr; gap: var(--space-2xl); }
}

@media (max-width: 768px) {
  /* Nav */
  .nav-links {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(251, 249, 245, 0.98);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: var(--space-2xl);
    z-index: 99;
  }
  .nav-links.open { display: flex; }
  .nav-links a { font-size: 1.25rem; }
  .nav-toggle { display: block; z-index: 101; }

  /* Hero */
  .hero { padding: 7rem var(--space-lg) var(--space-3xl); min-height: auto; }
  .hero-actions { flex-direction: column; }
  .hero-actions .btn { text-align: center; }

  /* Stats */
  .stats-grid { grid-template-columns: 1fr; gap: var(--space-lg); }

  /* Services */
  .services-grid { grid-template-columns: 1fr; }

  /* Portfolio */
  .portfolio-grid { grid-template-columns: 1fr; }
  .portfolio-card-featured .portfolio-img { height: 280px; }

  /* About */
  .about-content { grid-template-columns: 1fr; gap: var(--space-xl); }
  .about-img { height: 300px; order: -1; }

  /* Testimonials */
  .testimonials-grid { grid-template-columns: 1fr; }

  /* Contact */
  .form-row { grid-template-columns: 1fr; }

  /* Footer */
  .footer-inner { grid-template-columns: 1fr; gap: var(--space-xl); }
}

@media (max-width: 480px) {
  .section { padding: var(--space-3xl) 0; }
  .section-header { margin-bottom: var(--space-2xl); }
  .service-card { padding: var(--space-xl); }
  .testimonial-card { padding: var(--space-xl); }
}