/* ===== Variables ===== */
:root {
  --color-primary: #2d6a4f;
  --color-primary-dark: #1b4332;
  --color-accent: #40916c;
  --color-dark: #ffffff;
  --color-dark-alt: #f8f8f8;
  --color-text: #1a1a1a;
  --color-text-muted: #5c5c5c;
  --color-border: #e5e5e5;
  --color-surface: #ffffff;
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  --radius: 12px;
  --radius-sm: 8px;
  --shadow: 0 4px 24px rgba(45, 106, 79, 0.15);
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-sans);
  background: var(--color-dark);
  color: var(--color-text);
  line-height: 1.6;
  overflow-x: hidden;
}

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

.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

@media (max-width: 480px) {
  .container {
    padding: 0 16px;
  }
}

/* ===== Typography ===== */
h1, h2, h3, h4 {
  font-weight: 700;
  line-height: 1.2;
}

a {
  color: inherit;
  text-decoration: none;
}

/* ===== Buttons ===== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 12px 24px;
  font-size: 0.95rem;
  font-weight: 600;
  border-radius: var(--radius-sm);
  transition: all 0.2s ease;
  cursor: pointer;
  min-height: 44px;
  -webkit-tap-highlight-color: transparent;
}

.btn-primary {
  background: var(--color-primary);
  color: #ffffff;
  border: none;
}

.btn-primary:hover {
  background: var(--color-primary-dark);
  transform: translateY(-1px);
}

.btn-outline {
  background: transparent;
  color: var(--color-primary);
  border: 2px solid var(--color-primary);
}

.btn-outline:hover {
  background: var(--color-primary);
  color: #ffffff;
  border-color: var(--color-primary);
}

.btn-nav {
  padding: 10px 20px;
  font-size: 0.9rem;
  border-radius: var(--radius-sm);
  box-shadow: 0 2px 8px rgba(45, 106, 79, 0.2);
}

.btn-nav:hover {
  box-shadow: 0 4px 12px rgba(45, 106, 79, 0.3);
}

.btn-full {
  width: 100%;
  padding: 14px;
}

/* ===== Navigation ===== */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: rgba(255, 255, 255, 0.97);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid rgba(45, 106, 79, 0.08);
  transition: all 0.3s ease;
}

.navbar.scrolled {
  box-shadow: 0 2px 20px rgba(45, 106, 79, 0.08);
  border-bottom-color: rgba(45, 106, 79, 0.12);
}

.nav-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
}

.logo {
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--color-text);
}

.logo span {
  color: var(--color-primary);
}

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 6px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 12px;
  min-width: 48px;
  min-height: 48px;
  align-items: center;
  justify-content: center;
  -webkit-tap-highlight-color: transparent;
}

.nav-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--color-primary);
  transition: transform 0.3s ease;
}

.nav-toggle.active span:nth-child(1) {
  transform: rotate(45deg) translate(6px, 6px);
}

.nav-toggle.active span:nth-child(2) {
  opacity: 0;
}

.nav-toggle.active span:nth-child(3) {
  transform: rotate(-45deg) translate(6px, -6px);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 8px;
  list-style: none;
}

.nav-links > li > a:not(.btn) {
  font-weight: 500;
  font-size: 0.95rem;
  color: var(--color-text);
  padding: 10px 16px;
  border-radius: var(--radius-sm);
  transition: color 0.2s, background 0.2s;
  position: relative;
}

.nav-links > li > a:not(.btn):hover {
  color: var(--color-primary);
  background: rgba(45, 106, 79, 0.06);
}

.nav-links > li > a:not(.btn)::after {
  content: '';
  position: absolute;
  bottom: 6px;
  left: 16px;
  right: 16px;
  height: 2px;
  background: var(--color-primary);
  transform: scaleX(0);
  border-radius: 2px;
  transition: transform 0.2s ease;
}

.nav-links > li > a:not(.btn):hover::after {
  transform: scaleX(1);
}

.nav-links .btn-nav {
  margin-left: 8px;
  font-weight: 600;
}

/* ===== Hero ===== */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding: 120px 0 80px;
  background: linear-gradient(180deg, #ffffff 0%, #fafafa 100%);
  position: relative;
}

.hero::before {
  content: '';
  position: absolute;
  top: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 800px;
  height: 600px;
  background: radial-gradient(ellipse, rgba(45, 106, 79, 0.12) 0%, transparent 70%);
  pointer-events: none;
}

.hero-content {
  position: relative;
  text-align: center;
}

.hero-badge {
  display: inline-block;
  padding: 6px 16px;
  background: rgba(45, 106, 79, 0.15);
  border: 1px solid rgba(45, 106, 79, 0.4);
  border-radius: 100px;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--color-primary);
  margin-bottom: 24px;
}

.hero h1 {
  font-size: clamp(2.5rem, 5vw, 3.75rem);
  margin-bottom: 20px;
  max-width: 800px;
  margin-left: auto;
  margin-right: auto;
}

.hero .highlight {
  color: var(--color-primary);
}

.hero-subtitle {
  font-size: 1.2rem;
  color: var(--color-text-muted);
  max-width: 600px;
  margin: 0 auto 32px;
}

.hero-subtitle .key-word {
  font-weight: 700;
  color: var(--color-text);
}

.hero-actions {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
  margin-bottom: 64px;
}

.hero-stats {
  display: flex;
  gap: 48px;
  justify-content: center;
  flex-wrap: wrap;
  padding-top: 48px;
  border-top: 1px solid var(--color-border);
}

.stat {
  text-align: center;
}

.stat-number {
  display: block;
  font-size: 2rem;
  font-weight: 800;
  color: var(--color-primary);
  margin-bottom: 4px;
}

.stat-label {
  font-size: 0.9rem;
  color: var(--color-text-muted);
}

/* ===== Section Common ===== */
section {
  padding: 100px 0;
}

.section-header {
  text-align: center;
  max-width: 600px;
  margin: 0 auto 48px;
}

.section-tag {
  display: inline-block;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--color-primary);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: 12px;
}

.section-header h2 {
  font-size: clamp(2rem, 4vw, 2.5rem);
  margin-bottom: 12px;
}

.section-header p {
  color: var(--color-text-muted);
  font-size: 1.05rem;
}

/* ===== Services ===== */
.services {
  background: #f8f8f8;
}

.services-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 320px), 1fr));
  gap: 24px;
}

.service-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 32px;
  transition: all 0.3s ease;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.04);
}

.service-card:hover {
  border-color: var(--color-primary);
  transform: translateY(-4px);
  box-shadow: 0 8px 24px rgba(45, 106, 79, 0.2);
}

.service-icon {
  width: 56px;
  height: 56px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(45, 106, 79, 0.15);
  border-radius: var(--radius-sm);
  color: var(--color-primary);
  margin-bottom: 20px;
}

.service-card h3 {
  font-size: 1.25rem;
  margin-bottom: 12px;
}

.service-card-featured {
  border-color: rgba(45, 106, 79, 0.4);
}

.service-card-featured h3 {
  color: var(--color-primary);
}

.service-card p {
  color: var(--color-text-muted);
  font-size: 0.95rem;
}

/* ===== About ===== */
.about {
  background: #ffffff;
}

.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: center;
}

.about-content .section-tag {
  margin-bottom: 12px;
}

.about-content h2 {
  font-size: clamp(1.75rem, 3vw, 2.25rem);
  margin-bottom: 24px;
}

.about-content p {
  color: var(--color-text-muted);
  margin-bottom: 16px;
}

.about-features {
  display: flex;
  flex-direction: column;
  gap: 16px;
  margin-top: 28px;
}

.about-feature {
  display: flex;
  align-items: center;
  gap: 12px;
  color: var(--color-text);
}

.about-feature svg {
  flex-shrink: 0;
  color: var(--color-primary);
}

.about-visual {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.about-card {
  background: #f8f8f8;
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 24px 28px;
  display: flex;
  align-items: center;
  gap: 20px;
  transition: all 0.2s ease;
}

.about-card:hover {
  border-color: var(--color-primary);
}

.about-card-icon {
  font-size: 2rem;
}

.about-card h4 {
  font-size: 1.1rem;
  margin-bottom: 4px;
}

.about-card p {
  font-size: 0.9rem;
  color: var(--color-text-muted);
  margin: 0;
}

/* ===== Why Us ===== */
.why-us {
  background: #f8f8f8;
}

.why-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 260px), 1fr));
  gap: 32px;
}

.why-item {
  padding: 28px;
  background: #ffffff;
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  transition: all 0.2s ease;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.04);
}

.why-item:hover {
  border-color: var(--color-primary);
}

.why-number {
  font-size: 2rem;
  font-weight: 800;
  color: var(--color-primary);
  opacity: 0.5;
  margin-bottom: 12px;
}

.why-item h3 {
  font-size: 1.15rem;
  margin-bottom: 8px;
}

.why-item p {
  color: var(--color-text-muted);
  font-size: 0.95rem;
}

/* ===== Contact ===== */
.contact {
  background: #fafafa;
}

.contact-header {
  margin-bottom: 40px;
}

.contact-form {
  max-width: 640px;
  margin: 0 auto;
  background: #ffffff;
  padding: 40px;
  border-radius: var(--radius);
  border: 1px solid var(--color-border);
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.06);
}

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

.form-group {
  margin-bottom: 20px;
}

.form-group:last-of-type {
  margin-bottom: 28px;
}

.form-group label {
  display: block;
  font-weight: 500;
  margin-bottom: 8px;
  font-size: 0.9rem;
  color: var(--color-text);
}

.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: 14px 18px;
  background: #f8f8f8;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  color: var(--color-text);
  font-family: inherit;
  font-size: 1rem;
  transition: border-color 0.2s, box-shadow 0.2s;
}

.form-group input:hover,
.form-group select:hover,
.form-group textarea:hover {
  border-color: #d4d4d4;
}

.form-group input::placeholder,
.form-group textarea::placeholder {
  color: var(--color-text-muted);
  opacity: 0.8;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(45, 106, 79, 0.2);
}

.form-group select {
  cursor: pointer;
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%235c5c5c' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 16px center;
  padding-right: 44px;
}

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

.contact-form .btn-primary {
  padding: 16px 32px;
  font-size: 1rem;
}

/* ===== Footer ===== */
.footer {
  background: #1b4332;
  padding: 64px 0 0;
}

.footer-content {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 48px;
  padding-bottom: 48px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-brand .logo {
  font-size: 1.35rem;
}

.footer-brand p {
  color: #9ca3af;
  font-size: 0.95rem;
  margin-top: 12px;
}

.footer-brand .logo {
  color: #ffffff;
}

.footer-brand .logo span {
  color: #74c69d;
}

.footer-links h4 {
  font-size: 0.9rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: #9ca3af;
  margin-bottom: 16px;
}

.footer-links a {
  display: block;
  color: #d1d5db;
  font-size: 0.95rem;
  margin-bottom: 10px;
  transition: color 0.2s;
}

.footer-links a:hover {
  color: #74c69d;
}

.footer-bottom {
  padding: 24px 0;
}

.footer-bottom p {
  font-size: 0.9rem;
  color: #9ca3af;
}

/* ===== Responsive - All Screens ===== */

/* Large tablets & small desktops */
@media (max-width: 1024px) {
  section {
    padding: 80px 0;
  }

  .about-grid {
    gap: 48px;
  }

  .hero-stats {
    gap: 40px;
  }
}

/* Tablets */
@media (max-width: 768px) {
  .nav-toggle {
    display: flex;
  }

  .nav-container {
    height: 64px;
  }

  .nav-links {
    position: fixed;
    top: 64px;
    left: 0;
    right: 0;
    background: #ffffff;
    border-bottom: 1px solid var(--color-border);
    flex-direction: column;
    padding: 24px;
    gap: 16px;
    transform: translateY(-100%);
    opacity: 0;
    pointer-events: none;
    transition: all 0.3s ease;
    max-height: calc(100vh - 64px);
    overflow-y: auto;
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.1);
  }

  .nav-links.active {
    transform: translateY(0);
    opacity: 1;
    pointer-events: auto;
  }

  .hero {
    min-height: auto;
    padding: 100px 0 60px;
  }

  .hero h1 {
    font-size: clamp(1.75rem, 6vw, 2.5rem);
  }

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

  .hero-actions {
    margin-bottom: 48px;
    gap: 12px;
  }

  .hero-actions .btn {
    padding: 14px 20px;
    min-height: 48px;
  }

  .hero-stats {
    gap: 32px;
    padding-top: 40px;
  }

  .stat-number {
    font-size: 1.5rem;
  }

  section {
    padding: 64px 0;
  }

  .section-header {
    margin-bottom: 36px;
  }

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

  .service-card {
    padding: 24px;
  }

  .about-grid {
    grid-template-columns: 1fr;
    gap: 40px;
  }

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

  .why-item {
    padding: 24px;
  }

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

  .contact-form {
    padding: 28px 24px;
  }

  .footer-content {
    grid-template-columns: 1fr;
    gap: 36px;
    padding-bottom: 36px;
  }

  .footer {
    padding: 48px 0 0;
  }
}

/* Mobile phones */
@media (max-width: 480px) {
  .nav-container {
    height: 60px;
  }

  .nav-links {
    top: 60px;
    max-height: calc(100vh - 60px);
    padding: 20px 16px;
  }

  .logo {
    font-size: 1.25rem;
  }

  .hero {
    padding: 88px 0 48px;
  }

  .hero-badge {
    font-size: 0.75rem;
    padding: 5px 12px;
  }

  .hero h1 {
    font-size: 1.5rem;
    margin-bottom: 16px;
  }

  .hero-subtitle {
    font-size: 0.95rem;
    margin-bottom: 24px;
  }

  .hero-actions {
    flex-direction: column;
    width: 100%;
    margin-bottom: 40px;
  }

  .hero-actions .btn {
    width: 100%;
    justify-content: center;
  }

  .hero-stats {
    flex-direction: column;
    gap: 24px;
    padding-top: 32px;
  }

  section {
    padding: 48px 0;
  }

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

  .section-header p {
    font-size: 0.95rem;
  }

  .services-grid {
    gap: 16px;
  }

  .service-card {
    padding: 20px;
  }

  .service-icon {
    width: 48px;
    height: 48px;
    margin-bottom: 16px;
  }

  .service-card h3 {
    font-size: 1.1rem;
  }

  .service-card p {
    font-size: 0.9rem;
  }

  .about-content h2 {
    font-size: 1.5rem;
  }

  .about-card {
    padding: 20px;
  }

  .why-item {
    padding: 20px;
  }

  .why-number {
    font-size: 1.5rem;
  }

  .contact-form {
    margin: 0;
    padding: 24px 16px;
  }

  .footer-content {
    gap: 32px;
  }
}

/* Very small phones */
@media (max-width: 360px) {
  .hero h1 {
    font-size: 1.35rem;
  }

  .stat-number {
    font-size: 1.35rem;
  }
}

/* Large screens - ensure content doesn't stretch too wide */
@media (min-width: 1400px) {
  .container {
    max-width: 1320px;
    padding: 0 32px;
  }
}