/* ===================================================
   Terra Valuations - Styles
   =================================================== */

:root {
  /* Brand Colors */
  --green-900: #0E3B2E; /* Primary deep forest green */
  --green-700: #1E5747;
  --sage-400: #8FB89B;
  --mint-200: #D7E8DB;
  --bone-50: #F4F6F5;
  --ink-900: #0B1A15; /* Text */

  /* Spacing Scale */
  --space-4: 0.25rem;
  --space-8: 0.5rem;
  --space-12: 0.75rem;
  --space-16: 1rem;
  --space-24: 1.5rem;
  --space-32: 2rem;
  --space-48: 3rem;
  --space-64: 4rem;

  /* Typography */
  --font-heading: 'Manrope', sans-serif;
  --font-body: 'Inter', sans-serif;

  /* Transitions */
  --transition-fast: 0.2s ease;
  --transition-normal: 0.3s ease;
}

/* ===================================================
   Base Resets & Typography
   =================================================== */

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.6;
  color: var(--ink-900);
  background-color: var(--bone-50);
}

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  font-weight: 600;
  line-height: 1.2;
  margin: 0 0 var(--space-16) 0;
  letter-spacing: -0.02em;
}

h1 { font-size: 2.5rem; }
h2 { font-size: 2rem; }
h3 { font-size: 1.5rem; }
h4 { font-size: 1.25rem; }

p {
  margin: 0 0 var(--space-16) 0;
}

a {
  color: var(--green-900);
  text-decoration: none;
  transition: color var(--transition-fast);
}

a:hover,
a:focus {
  color: var(--sage-400);
}

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

/* ===================================================
   Utility Classes
   =================================================== */

.container {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 var(--space-24);
}

.btn {
  display: inline-block;
  padding: var(--space-16) var(--space-32);
  background-color: var(--green-900);
  color: var(--bone-50);
  font-family: var(--font-heading);
  font-weight: 600;
  font-size: 1rem;
  border: none;
  border-radius: 0.375rem;
  cursor: pointer;
  transition: all var(--transition-normal);
  text-decoration: none;
  text-align: center;
  min-height: 48px;
  line-height: 1;
}

.btn:hover,
.btn:focus {
  background-color: var(--green-700);
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(14, 59, 46, 0.3);
}

.btn:focus {
  outline: 2px solid var(--sage-400);
  outline-offset: 2px;
}

.btn-secondary {
  background-color: transparent;
  color: var(--green-900);
  border: 2px solid var(--green-900);
}

.btn-secondary:hover,
.btn-secondary:focus {
  background-color: var(--green-900);
  color: var(--bone-50);
}

.hidden {
  display: none !important;
}

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

/* ===================================================
   Skip Link
   =================================================== */

.skip-link {
  position: absolute;
  top: -40px;
  left: 6px;
  background: var(--green-900);
  color: var(--bone-50);
  padding: 8px;
  text-decoration: none;
  z-index: 1000;
  border-radius: 0 0 4px 4px;
}

.skip-link:focus {
  top: 0;
}

/* ===================================================
   Header & Navigation
   =================================================== */

.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: transparent;
  transition: background-color var(--transition-normal);
  padding: var(--space-16) 0;
}

.header.solid {
  background-color: var(--green-900);
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}

.header-container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 var(--space-24);
}

.logo {
  height: 75px;
  width: auto;
}

.nav {
  display: flex;
  align-items: center;
  gap: var(--space-32);
}

.nav-list {
  display: flex;
  list-style: none;
  margin: 0;
  padding: 0;
  gap: var(--space-24);
}

.nav-link {
  color: var(--bone-50);
  font-weight: 500;
  padding: var(--space-8) 0;
  position: relative;
  transition: color var(--transition-fast);
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background-color: var(--sage-400);
  transition: width var(--transition-fast);
}

.nav-link:hover::after,
.nav-link:focus::after,
.nav-link.active::after {
  width: 100%;
}

.menu-toggle {
  display: none;
  background: none;
  border: none;
  color: var(--bone-50);
  font-size: 1.5rem;
  cursor: pointer;
  padding: var(--space-8);
}

.menu-toggle:focus {
  outline: 2px solid var(--sage-400);
  outline-offset: 2px;
}

/* ===================================================
   Hero Section
   =================================================== */

.hero {
  position: relative;
  min-height: 70vh;
  display: flex;
  align-items: center;
  background-image: url('../img/hero.jpg');
  background-size: cover;
  background-position: center;
  background-attachment: fixed;
}

.hero::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(14, 59, 46, 0.7);
  z-index: 1;
}

.hero-content {
  position: relative;
  z-index: 2;
  max-width: 600px;
  color: var(--bone-50);
  padding: 0 var(--space-24);
}

.hero h1 {
  font-size: 3rem;
  margin-bottom: var(--space-16);
  line-height: 1.1;
}

.hero p {
  font-size: 1.25rem;
  margin-bottom: var(--space-32);
  line-height: 1.4;
}

.hero-actions {
  display: flex;
  gap: var(--space-16);
  flex-wrap: wrap;
}

/* ===================================================
   Sections
   =================================================== */

.section {
  padding: var(--space-64) 0;
}

.section-alt {
  background-color: var(--mint-200);
}

.section-header {
  text-align: center;
  margin-bottom: var(--space-48);
}

.section-header h2 {
  margin-bottom: var(--space-16);
}

.section-header p {
  max-width: 600px;
  margin: 0 auto;
  font-size: 1.125rem;
  color: var(--ink-900);
  opacity: 0.8;
}

/* ===================================================
   Cards & Grids
   =================================================== */

.cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: var(--space-32);
  margin: var(--space-48) 0;
}

.card {
  background: var(--bone-50);
  padding: var(--space-32);
  border-radius: 8px;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
  transition: transform var(--transition-normal), box-shadow var(--transition-normal);
}

.card:hover {
  transform: translateY(-4px);
  box-shadow: 0 8px 25px rgba(0, 0, 0, 0.15);
}

.card-icon {
  width: 48px;
  height: 48px;
  background-color: var(--sage-400);
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: var(--space-16);
  font-size: 1.5rem;
}

.card h3 {
  margin-bottom: var(--space-12);
}

.card p {
  margin-bottom: var(--space-24);
  color: var(--ink-900);
  opacity: 0.8;
}

/* ===================================================
   Accordions
   =================================================== */

.accordion {
  border: 1px solid var(--sage-400);
  border-radius: 8px;
  margin: var(--space-24) 0;
}

.accordion-item {
  border-bottom: 1px solid var(--sage-400);
}

.accordion-item:last-child {
  border-bottom: none;
}

.accordion-header {
  padding: var(--space-24);
  background: none;
  border: none;
  width: 100%;
  text-align: left;
  cursor: pointer;
  font-family: var(--font-heading);
  font-size: 1.125rem;
  font-weight: 600;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.accordion-header:focus {
  outline: 2px solid var(--sage-400);
  outline-offset: -2px;
}

.accordion-header::after {
  content: '+';
  font-size: 1.25rem;
  transition: transform var(--transition-fast);
}

.accordion-item.open .accordion-header::after {
  transform: rotate(45deg);
}

.accordion-content {
  padding: 0 var(--space-24) var(--space-24);
  display: none;
}

.accordion-item.open .accordion-content {
  display: block;
}

/* ===================================================
   Forms
   =================================================== */

.form-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-24);
  max-width: 600px;
  margin: 0 auto;
}

.form-group {
  display: flex;
  flex-direction: column;
}

.form-group label {
  font-weight: 600;
  margin-bottom: var(--space-8);
}

.form-group input,
.form-group select,
.form-group textarea {
  padding: var(--space-16);
  border: 1px solid var(--sage-400);
  border-radius: 4px;
  font-family: var(--font-body);
  font-size: 1rem;
  transition: border-color var(--transition-fast);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--green-700);
  box-shadow: 0 0 0 3px rgba(30, 87, 71, 0.1);
}

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

/* ===================================================
   Footer
   =================================================== */

.footer {
  background-color: var(--green-900);
  color: var(--bone-50);
  padding: var(--space-64) 0 var(--space-32);
}

.footer-cta {
  background-color: var(--green-700);
  padding: var(--space-48) 0;
  text-align: center;
  margin-bottom: var(--space-64);
}

.footer-content {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: var(--space-48);
  margin-bottom: var(--space-48);
}

.footer-section h4 {
  margin-bottom: var(--space-16);
  color: var(--sage-400);
}

.footer-links {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-16);
}

.footer-links li {
  margin-bottom: 0;
}

.footer-links a {
  color: var(--bone-50);
  transition: color var(--transition-fast);
}

.footer-links a:hover,
.footer-links a:focus {
  color: var(--sage-400);
}

.footer-bottom {
  border-top: 1px solid var(--sage-400);
  padding-top: var(--space-24);
  text-align: center;
  font-size: 0.875rem;
  opacity: 0.8;
}

/* ===================================================
   Mobile Navigation
   =================================================== */

@media (max-width: 768px) {
  .nav {
    position: fixed;
    top: 0;
    right: -100%;
    width: 280px;
    height: 100vh;
    background-color: var(--green-900);
    flex-direction: column;
    justify-content: flex-start;
    padding: var(--space-64) var(--space-24);
    transition: right var(--transition-normal);
    z-index: 999;
  }

  .nav.open {
    right: 0;
  }

  .nav-list {
    flex-direction: column;
    gap: var(--space-16);
  }

  .nav-link {
    font-size: 1.125rem;
    padding: var(--space-16) 0;
  }

  .menu-toggle {
    display: block;
  }

  .overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.5);
    z-index: 998;
    opacity: 0;
    visibility: hidden;
    transition: opacity var(--transition-normal), visibility var(--transition-normal);
  }

  .overlay.active {
    opacity: 1;
    visibility: visible;
  }

  /* Hero responsive */
  .hero h1 {
    font-size: 2.25rem;
  }

  .hero p {
    font-size: 1.125rem;
  }

  .hero-actions {
    flex-direction: column;
    align-items: flex-start;
  }

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

  /* Footer responsive */
  .footer-content {
    grid-template-columns: 1fr;
    gap: var(--space-32);
  }

  /* Additional mobile optimizations */
  .logo {
    height: 50px;
  }

  .header-container {
    padding: 0 var(--space-16);
  }

  .section {
    padding: var(--space-48) 0;
  }

  .section-header h2 {
    font-size: 1.75rem;
  }

  .section-header p {
    font-size: 1rem;
  }

  .cards {
    grid-template-columns: 1fr;
    gap: var(--space-24);
  }

  .card {
    padding: var(--space-24);
  }

  .card-icon {
    width: 40px;
    height: 40px;
    font-size: 1.25rem;
  }

  .btn {
    font-size: 0.95rem;
    padding: var(--space-12) var(--space-24);
  }

  .form-grid {
    grid-template-columns: 1fr;
    gap: var(--space-16);
  }

  .accordion-header {
    padding: var(--space-16);
    font-size: 1rem;
  }

  .accordion-content {
    padding: 0 var(--space-16) var(--space-16);
  }

  .footer {
    padding: var(--space-48) 0 var(--space-24);
  }

  .footer-cta {
    padding: var(--space-32) 0;
  }

  .footer-section h4 {
    margin-bottom: var(--space-12);
  }
}

/* Tablet specific optimizations */
@media (max-width: 1024px) {
  .container {
    padding: 0 var(--space-20);
  }

  .cards {
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  }
}

/* Small tablet and large phone optimizations */
@media (max-width: 480px) {
  .container {
    padding: 0 var(--space-12);
  }

  .hero h1 {
    font-size: 2rem;
  }

  .hero p {
    font-size: 1rem;
  }

  .section {
    padding: var(--space-32) 0;
  }

  .section-header {
    margin-bottom: var(--space-32);
  }

  .section-header h2 {
    font-size: 1.5rem;
  }

  .card {
    padding: var(--space-20);
  }

  .btn {
    font-size: 0.9rem;
    padding: var(--space-12) var(--space-20);
  }

  .footer-links {
    gap: var(--space-12);
  }

  .footer-links li {
    font-size: 0.9rem;
  }

  /* Touch targets for mobile */
  .menu-toggle {
    padding: var(--space-12);
    min-width: 44px;
    min-height: 44px;
  }

  .btn {
    min-height: 44px;
  }

  /* Better mobile spacing for interactive elements */
  .accordion-header {
    min-height: 44px;
  }

  /* Ensure proper line heights on small screens */
  body {
    line-height: 1.5;
  }

  p, li {
    line-height: 1.5;
  }
}

/* ===================================================
   Print Styles
   =================================================== */

@media print {
  .header,
  .footer-cta,
  .btn,
  .menu-toggle,
  .skip-link {
    display: none !important;
  }

  .hero {
    background: none !important;
    height: auto;
    padding: var(--space-48) 0;
  }

  .hero::before {
    display: none;
  }

  .hero-content {
    color: var(--ink-900);
  }

  body {
    font-size: 12px;
  }

  .section {
    padding: var(--space-24) 0;
  }

  a {
    color: var(--ink-900);
    text-decoration: underline;
  }

  .card {
    box-shadow: none;
    border: 1px solid #ccc;
  }
}