/* ============================================================
   Green28 Flow - Main Stylesheet
   Brand: Green28 Flow - 鍔犳嬁澶?8/PC28棰勬祴鏁版嵁骞冲彴
   Theme: green-600 (#16a34a) + emerald-500 (#10b981)
   Fresh, modern, clean design with Tailwind CDN supplement
   ============================================================ */

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

:root {
  /* Primary palette */
  --green-50:  #f0fdf4;
  --green-100: #dcfce7;
  --green-200: #bbf7d0;
  --green-300: #86efac;
  --green-400: #4ade80;
  --green-500: #22c55e;
  --green-600: #16a34a;
  --green-700: #15803d;
  --green-800: #166534;
  --green-900: #14532d;
  --green-950: #052e16;

  /* Emerald accents */
  --emerald-400: #34d399;
  --emerald-500: #10b981;
  --emerald-600: #059669;

  /* Neutral */
  --white:    #ffffff;
  --gray-50:  #f9fafb;
  --gray-100: #f3f4f6;
  --gray-200: #e5e7eb;
  --gray-300: #d1d5db;
  --gray-400: #9ca3af;
  --gray-500: #6b7280;
  --gray-600: #4b5563;
  --gray-700: #374151;
  --gray-800: #1f2937;
  --gray-900: #111827;

  /* Semantic */
  --primary:      var(--green-600);
  --primary-dark: var(--green-700);
  --primary-light: var(--green-100);
  --accent:       var(--emerald-500);
  --accent-dark:  var(--emerald-600);
  --text:         var(--gray-800);
  --text-muted:   var(--gray-500);
  --bg:           var(--white);
  --bg-alt:       var(--gray-50);

  /* Typography */
  --font-sans: 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', system-ui, -apple-system, sans-serif;
  --font-mono: 'Cascadia Code', 'Fira Code', 'Consolas', monospace;

  /* Spacing scale */
  --space-xs: 0.25rem;
  --space-sm: 0.5rem;
  --space-md: 1rem;
  --space-lg: 1.5rem;
  --space-xl: 2rem;
  --space-2xl: 3rem;
  --space-3xl: 4rem;
  --space-4xl: 6rem;

  /* Shadows */
  --shadow-sm:  0 1px 2px rgba(0,0,0,0.05);
  --shadow-md:  0 4px 6px -1px rgba(0,0,0,0.07), 0 2px 4px -2px rgba(0,0,0,0.05);
  --shadow-lg:  0 10px 15px -3px rgba(0,0,0,0.08), 0 4px 6px -4px rgba(0,0,0,0.04);
  --shadow-xl:  0 20px 25px -5px rgba(0,0,0,0.10), 0 8px 10px -6px rgba(0,0,0,0.04);

  /* Borders */
  --radius-sm: 0.375rem;
  --radius-md: 0.5rem;
  --radius-lg: 0.75rem;
  --radius-xl: 1rem;
  --radius-2xl: 1.5rem;
  --radius-full: 9999px;

  /* Transitions */
  --transition-fast: 150ms ease;
  --transition-base: 250ms ease;
  --transition-slow: 350ms ease;

  /* Layout */
  --max-width: 1200px;
  --nav-height: 72px;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: var(--nav-height);
  font-size: 16px;
}

body {
  font-family: var(--font-sans);
  color: var(--text);
  background: var(--bg);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

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

a {
  color: var(--primary);
  text-decoration: none;
  transition: color var(--transition-fast);
}
a:hover { color: var(--primary-dark); }

ul, ol { list-style: none; }

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

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

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-sm);
  padding: 0.75rem 1.75rem;
  font-size: 1rem;
  font-weight: 600;
  font-family: inherit;
  border: 2px solid transparent;
  border-radius: var(--radius-lg);
  cursor: pointer;
  transition: all var(--transition-base);
  white-space: nowrap;
  line-height: 1.4;
}

.btn-primary {
  background: linear-gradient(135deg, var(--green-600), var(--green-700));
  color: var(--white);
  box-shadow: 0 2px 8px rgba(22, 163, 74, 0.25);
}
.btn-primary:hover {
  background: linear-gradient(135deg, var(--green-700), var(--green-800));
  box-shadow: 0 4px 16px rgba(22, 163, 74, 0.35);
  color: var(--white);
  transform: translateY(-1px);
}

.btn-outline {
  background: transparent;
  color: var(--green-600);
  border-color: var(--green-600);
}
.btn-outline:hover {
  background: var(--green-600);
  color: var(--white);
}

.btn-lg {
  padding: 1rem 2.25rem;
  font-size: 1.125rem;
  border-radius: var(--radius-xl);
}
.btn-sm {
  padding: 0.5rem 1.25rem;
  font-size: 0.875rem;
}

/* ---------- Navigation ---------- */
.nav {
  height: var(--nav-height);
  background: rgba(255, 255, 255, 0.85);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid rgba(22, 163, 74, 0.10);
  transition: all var(--transition-base);
}

.nav.scrolled {
  box-shadow: var(--shadow-md);
  background: rgba(255, 255, 255, 0.95);
}

.nav .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
}

.nav-brand {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  font-size: 1.35rem;
  font-weight: 700;
  color: var(--gray-900);
  letter-spacing: -0.02em;
}
.nav-brand .brand-icon {
  width: 38px;
  height: 38px;
  background: linear-gradient(135deg, var(--green-600), var(--emerald-500));
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--white);
  font-size: 0.85rem;
  font-weight: 800;
  flex-shrink: 0;
}
.nav-brand span {
  background: linear-gradient(135deg, var(--green-600), var(--emerald-500));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: var(--space-xl);
}
.nav-links a {
  color: var(--gray-600);
  font-weight: 500;
  font-size: 0.95rem;
  position: relative;
  padding: var(--space-xs) 0;
  transition: color var(--transition-fast);
}
.nav-links a::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--green-600);
  border-radius: 1px;
  transition: width var(--transition-base);
}
.nav-links a:hover,
.nav-links a.active {
  color: var(--green-600);
}
.nav-links a:hover::after,
.nav-links a.active::after {
  width: 100%;
}

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: var(--space-xs);
}
.nav-toggle span {
  display: block;
  width: 26px;
  height: 2.5px;
  background: var(--gray-700);
  border-radius: 2px;
  transition: all var(--transition-base);
}
.nav-toggle.active span:nth-child(1) { transform: translateY(7.5px) rotate(45deg); }
.nav-toggle.active span:nth-child(2) { opacity: 0; }
.nav-toggle.active span:nth-child(3) { transform: translateY(-7.5px) rotate(-45deg); }

/* ---------- Section Base ---------- */
.section {
  padding: var(--space-4xl) 0;
}

.section-header {
  text-align: center;
  max-width: 700px;
  margin: 0 auto var(--space-3xl);
}

.section-label {
  display: inline-flex;
  align-items: center;
  font-size: 0.85rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--green-600);
  background: var(--green-50);
  padding: 0.35rem 1.1rem;
  border-radius: var(--radius-full);
  margin-bottom: var(--space-md);
}

.section-title {
  font-size: 2.4rem;
  font-weight: 800;
  color: var(--gray-900);
  line-height: 1.25;
  margin-bottom: var(--space-md);
  letter-spacing: -0.02em;
}

.section-subtitle {
  font-size: 1.1rem;
  color: var(--text-muted);
  line-height: 1.7;
}

/* ---------- Hero Section ---------- */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding-top: var(--nav-height);
  background:
    radial-gradient(ellipse 80% 60% at 50% -10%, rgba(22,163,74,0.08), transparent),
    radial-gradient(ellipse 60% 50% at 80% 60%, rgba(16,185,129,0.06), transparent),
    var(--bg);
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: -300px; right: -300px;
  width: 700px; height: 700px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(22,163,74,0.03), transparent 70%);
  pointer-events: none;
}

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

.hero-content h1 {
  font-size: 3.2rem;
  font-weight: 800;
  line-height: 1.15;
  color: var(--gray-900);
  margin-bottom: var(--space-lg);
  letter-spacing: -0.03em;
}
.hero-content h1 .highlight {
  background: linear-gradient(135deg, var(--green-600), var(--emerald-500));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-content p {
  font-size: 1.15rem;
  color: var(--text-muted);
  margin-bottom: var(--space-xl);
  line-height: 1.75;
  max-width: 520px;
}

.hero-btns {
  display: flex;
  gap: var(--space-md);
  flex-wrap: wrap;
}

.hero-image {
  border-radius: var(--radius-2xl);
  overflow: hidden;
  box-shadow: var(--shadow-xl);
  aspect-ratio: 4 / 3;
  position: relative;
}
.hero-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.hero-stats {
  display: flex;
  gap: var(--space-xl);
  margin-top: var(--space-2xl);
  padding-top: var(--space-xl);
  border-top: 1px solid var(--gray-200);
}
.hero-stat h3 {
  font-size: 1.8rem;
  font-weight: 800;
  color: var(--green-600);
  line-height: 1.2;
}
.hero-stat p {
  font-size: 0.9rem;
  color: var(--text-muted);
  margin-bottom: 0;
}

/* ---------- Features Section ---------- */
.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-xl);
}

.feature-card {
  background: var(--white);
  border: 1px solid var(--gray-200);
  border-radius: var(--radius-xl);
  padding: var(--space-2xl);
  transition: all var(--transition-base);
  position: relative;
  overflow: hidden;
}
.feature-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--green-600), var(--emerald-500));
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--transition-slow);
}
.feature-card:hover {
  border-color: var(--green-300);
  box-shadow: var(--shadow-lg);
  transform: translateY(-4px);
}
.feature-card:hover::before { transform: scaleX(1); }

.feature-icon {
  width: 52px;
  height: 52px;
  border-radius: var(--radius-lg);
  background: var(--green-50);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.4rem;
  margin-bottom: var(--space-lg);
  color: var(--green-600);
}

.feature-card h3 {
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--gray-900);
  margin-bottom: var(--space-sm);
}
.feature-card p {
  color: var(--text-muted);
  font-size: 0.95rem;
  line-height: 1.7;
}

/* ---------- Stats Counter Section ---------- */
.stats-counter {
  background: linear-gradient(135deg, var(--green-600), var(--green-800));
  color: var(--white);
  padding: var(--space-4xl) 0;
}
.stats-counter .section-label {
  background: rgba(255,255,255,0.2);
  color: var(--white);
}
.stats-counter .section-title,
.stats-counter .section-subtitle { color: var(--white); }
.stats-counter .section-subtitle { opacity: 0.85; }

.stats-row {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-xl);
  text-align: center;
}
.stat-item .stat-number {
  font-size: 2.8rem;
  font-weight: 800;
  line-height: 1.1;
  margin-bottom: var(--space-xs);
}
.stat-item .stat-suffix { font-size: 1.8rem; font-weight: 400; }
.stat-item p { font-size: 0.95rem; opacity: 0.85; }

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

.testimonial-card {
  background: var(--white);
  border: 1px solid var(--gray-200);
  border-radius: var(--radius-xl);
  padding: var(--space-2xl);
  transition: all var(--transition-base);
}
.testimonial-card:hover {
  border-color: var(--green-200);
  box-shadow: var(--shadow-md);
}

.testimonial-stars {
  display: flex;
  gap: 2px;
  margin-bottom: var(--space-md);
  color: #f59e0b;
  font-size: 1.1rem;
}

.testimonial-text {
  font-size: 0.95rem;
  color: var(--gray-600);
  line-height: 1.75;
  margin-bottom: var(--space-lg);
  font-style: italic;
}

.testimonial-author {
  display: flex;
  align-items: center;
  gap: var(--space-md);
}
.testimonial-author img {
  width: 44px;
  height: 44px;
  border-radius: var(--radius-full);
  object-fit: cover;
  border: 2px solid var(--green-200);
}
.testimonial-author h4 {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--gray-900);
}
.testimonial-author p {
  font-size: 0.8rem;
  color: var(--text-muted);
}

/* ---------- FAQ ---------- */
.faq-list {
  max-width: 800px;
  margin: 0 auto;
}

.faq-item {
  border: 1px solid var(--gray-200);
  border-radius: var(--radius-lg);
  margin-bottom: var(--space-md);
  overflow: hidden;
  background: var(--white);
  transition: all var(--transition-base);
}
.faq-item:hover { border-color: var(--green-300); }

.faq-question {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-lg) var(--space-xl);
  background: none;
  border: none;
  font-family: inherit;
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--gray-900);
  cursor: pointer;
  text-align: left;
  line-height: 1.5;
  gap: var(--space-md);
}
.faq-question .faq-icon-left {
  color: var(--green-600);
  font-size: 1rem;
  flex-shrink: 0;
}
.faq-question .faq-icon {
  flex-shrink: 0;
  width: 28px;
  height: 28px;
  border-radius: var(--radius-full);
  background: var(--green-50);
  color: var(--green-600);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.8rem;
  font-weight: 700;
  transition: transform var(--transition-base);
  margin-left: auto;
}
.faq-item.active .faq-icon {
  transform: rotate(45deg);
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height var(--transition-slow), padding var(--transition-slow);
}
.faq-item.active .faq-answer { max-height: 500px; }
.faq-answer-inner {
  padding: 0 var(--space-xl) var(--space-xl);
  color: var(--text-muted);
  font-size: 0.95rem;
  line-height: 1.75;
}

/* ---------- CTA ---------- */
.cta {
  background: linear-gradient(135deg, var(--green-600), var(--emerald-600));
  color: var(--white);
  text-align: center;
  padding: var(--space-4xl) 0;
}
.cta .section-label {
  background: rgba(255,255,255,0.2);
  color: var(--white);
}
.cta .section-title {
  color: var(--white);
  font-size: 2.5rem;
}
.cta .section-subtitle {
  color: rgba(255,255,255,0.85);
  max-width: 600px;
  margin: 0 auto var(--space-xl);
}
.cta .btn {
  background: var(--white);
  color: var(--green-700);
  font-weight: 700;
  box-shadow: var(--shadow-lg);
}
.cta .btn:hover {
  background: var(--gray-50);
  color: var(--green-800);
  transform: translateY(-2px);
  box-shadow: var(--shadow-xl);
}

/* ---------- Footer ---------- */
.footer {
  background: var(--gray-900);
  color: var(--gray-400);
  padding: var(--space-3xl) 0 var(--space-xl);
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: var(--space-2xl);
  padding-bottom: var(--space-2xl);
  border-bottom: 1px solid var(--gray-800);
  margin-bottom: var(--space-xl);
}

.footer-brand .brand-row {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  margin-bottom: var(--space-md);
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--white);
}
.footer-brand .brand-icon {
  width: 34px;
  height: 34px;
  background: linear-gradient(135deg, var(--green-600), var(--emerald-500));
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--white);
  font-size: 0.75rem;
  font-weight: 800;
}
.footer-brand p {
  font-size: 0.9rem;
  line-height: 1.7;
  max-width: 320px;
}

.footer-social {
  display: flex;
  gap: var(--space-md);
}
.footer-social a {
  width: 36px;
  height: 36px;
  border-radius: var(--radius-full);
  background: var(--gray-800);
  color: var(--gray-400);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.95rem;
  transition: all var(--transition-fast);
}
.footer-social a:hover {
  background: var(--green-600);
  color: var(--white);
}

.footer-col h4 {
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--white);
  margin-bottom: var(--space-lg);
  text-transform: uppercase;
  letter-spacing: 0.04em;
}
.footer-col li { margin-bottom: var(--space-sm); }
.footer-col a {
  color: var(--gray-400);
  font-size: 0.9rem;
  transition: color var(--transition-fast);
}
.footer-col a:hover { color: var(--green-400); }

.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.85rem;
  flex-wrap: wrap;
  gap: var(--space-sm);
}

/* ============================================================
   ABOUT PAGE STYLES
   ============================================================ */
.about-hero {
  padding-top: calc(var(--nav-height) + var(--space-4xl));
  padding-bottom: var(--space-4xl);
  background:
    radial-gradient(ellipse 60% 50% at 30% 20%, rgba(22,163,74,0.06), transparent),
    var(--bg-alt);
  text-align: center;
}
.about-hero .section-title { font-size: 2.8rem; }

.about-mission { padding: var(--space-4xl) 0; }
.about-mission .container {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-3xl);
  align-items: center;
}
.about-mission-image {
  border-radius: var(--radius-2xl);
  overflow: hidden;
  box-shadow: var(--shadow-xl);
  aspect-ratio: 4 / 3;
}
.about-mission-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.about-mission-text h2 {
  font-size: 2rem;
  font-weight: 800;
  color: var(--gray-900);
  margin-bottom: var(--space-lg);
  letter-spacing: -0.02em;
}
.about-mission-text p {
  color: var(--text-muted);
  line-height: 1.8;
  margin-bottom: var(--space-md);
}

/* Values Grid */
.values-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-xl);
}

.value-card {
  text-align: center;
  padding: var(--space-2xl);
  border: 1px solid var(--gray-200);
  border-radius: var(--radius-xl);
  background: var(--white);
  transition: all var(--transition-base);
}
.value-card:hover {
  border-color: var(--green-300);
  box-shadow: var(--shadow-lg);
  transform: translateY(-3px);
}

.value-icon {
  width: 64px;
  height: 64px;
  border-radius: var(--radius-full);
  background: var(--green-50);
  color: var(--green-600);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.4rem;
  margin: 0 auto var(--space-lg);
}
.value-card h3 {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--gray-900);
  margin-bottom: var(--space-sm);
}
.value-card p {
  font-size: 0.9rem;
  color: var(--text-muted);
  line-height: 1.65;
}

/* Timeline */
.timeline {
  max-width: 800px;
  margin: 0 auto;
  position: relative;
}
.timeline::before {
  content: '';
  position: absolute;
  left: 32px;
  top: 0; bottom: 0;
  width: 2px;
  background: var(--green-200);
}
.timeline-item {
  display: flex;
  gap: var(--space-xl);
  margin-bottom: var(--space-2xl);
  position: relative;
}
.timeline-dot {
  width: 16px;
  height: 16px;
  border-radius: var(--radius-full);
  background: var(--green-600);
  border: 3px solid var(--green-100);
  flex-shrink: 0;
  margin-top: 4px;
  position: relative;
  z-index: 1;
  left: 26px;
}
.timeline-content { padding-left: var(--space-xl); }
.timeline-content h4 {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--gray-900);
  margin-bottom: var(--space-xs);
}
.timeline-content .year {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--green-600);
  margin-bottom: var(--space-sm);
}
.timeline-content p {
  font-size: 0.9rem;
  color: var(--text-muted);
  line-height: 1.7;
}

/* ============================================================
   CONTACT PAGE STYLES
   ============================================================ */
.contact-hero {
  padding-top: calc(var(--nav-height) + var(--space-4xl));
  padding-bottom: var(--space-3xl);
  text-align: center;
  background:
    radial-gradient(ellipse 60% 50% at 50% 30%, rgba(22,163,74,0.06), transparent),
    var(--bg-alt);
}

.contact-grid {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: var(--space-3xl);
  padding: var(--space-3xl) 0 var(--space-4xl);
}

.contact-form-wrapper {
  background: var(--white);
  border: 1px solid var(--gray-200);
  border-radius: var(--radius-2xl);
  padding: var(--space-2xl);
  box-shadow: var(--shadow-sm);
}
.contact-form-wrapper h2 {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--gray-900);
  margin-bottom: var(--space-lg);
}

.form-group { margin-bottom: var(--space-lg); }
.form-label {
  display: block;
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--gray-700);
  margin-bottom: var(--space-xs);
}
.form-input,
.form-textarea,
.form-select {
  width: 100%;
  padding: 0.75rem 1rem;
  font-size: 0.95rem;
  font-family: inherit;
  color: var(--gray-800);
  background: var(--white);
  border: 1.5px solid var(--gray-300);
  border-radius: var(--radius-lg);
  transition: all var(--transition-fast);
  outline: none;
}
.form-input:focus,
.form-textarea:focus,
.form-select:focus {
  border-color: var(--green-500);
  box-shadow: 0 0 0 3px rgba(34,197,94,0.15);
}

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

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

.form-checkbox {
  display: flex;
  align-items: flex-start;
  gap: var(--space-sm);
  font-size: 0.9rem;
  color: var(--text-muted);
  cursor: pointer;
}
.form-checkbox input {
  width: 18px; height: 18px;
  accent-color: var(--green-600);
  flex-shrink: 0;
  margin-top: 2px;
}

.form-submit { width: 100%; }

.form-error {
  font-size: 0.8rem;
  color: #dc2626;
  margin-top: var(--space-xs);
  display: none;
}
.form-group.error .form-error { display: block; }
.form-group.error .form-input,
.form-group.error .form-textarea { border-color: #dc2626; }

.form-success {
  display: none;
  text-align: center;
  padding: var(--space-2xl);
}
.form-success.active { display: block; }
.form-success .success-icon {
  width: 72px; height: 72px;
  border-radius: var(--radius-full);
  background: var(--green-100);
  color: var(--green-600);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2rem;
  margin: 0 auto var(--space-lg);
}
.form-success h3 {
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--gray-900);
  margin-bottom: var(--space-sm);
}
.form-success p {
  color: var(--text-muted);
  margin-bottom: var(--space-lg);
}

/* Contact Info Sidebar */
.contact-info { display: flex; flex-direction: column; gap: var(--space-xl); }
.contact-info-card {
  background: var(--white);
  border: 1px solid var(--gray-200);
  border-radius: var(--radius-xl);
  padding: var(--space-xl);
  transition: all var(--transition-base);
}
.contact-info-card:hover {
  border-color: var(--green-300);
  box-shadow: var(--shadow-md);
}
.contact-info-icon {
  width: 48px; height: 48px;
  border-radius: var(--radius-lg);
  background: var(--green-50);
  color: var(--green-600);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
  margin-bottom: var(--space-md);
}
.contact-info-card h4 {
  font-size: 1rem;
  font-weight: 700;
  color: var(--gray-900);
  margin-bottom: var(--space-xs);
}
.contact-info-card p {
  font-size: 0.9rem;
  color: var(--text-muted);
  line-height: 1.6;
}
.contact-info-card a { color: var(--green-600); font-weight: 500; }

.contact-map {
  border-radius: var(--radius-xl);
  overflow: hidden;
  border: 1px solid var(--gray-200);
  aspect-ratio: 16/10;
  background: var(--gray-100);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-muted);
  font-size: 0.9rem;
}

/* ============================================================
   SCROLL TO TOP
   ============================================================ */
.scroll-top {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  width: 46px;
  height: 46px;
  border-radius: var(--radius-full);
  background: var(--green-600);
  color: var(--white);
  border: none;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
  cursor: pointer;
  box-shadow: var(--shadow-lg);
  opacity: 0;
  visibility: hidden;
  transform: translateY(12px);
  transition: all var(--transition-base);
  z-index: 999;
}
.scroll-top.visible {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}
.scroll-top:hover {
  background: var(--green-700);
  transform: translateY(-2px);
}

/* ============================================================
   LOADING SPINNER
   ============================================================ */
.page-loader {
  position: fixed;
  inset: 0;
  background: var(--white);
  z-index: 9999;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: opacity 0.4s ease, visibility 0.4s ease;
}
.page-loader.hidden {
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
}
.spinner {
  width: 44px;
  height: 44px;
  border: 3px solid var(--green-200);
  border-top-color: var(--green-600);
  border-radius: var(--radius-full);
  animation: spin 0.7s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }

/* ============================================================
   ANIMATIONS
   ============================================================ */
@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(24px); }
  to   { opacity: 1; transform: translateY(0); }
}

.animate-in {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}
.animate-in.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ============================================================
   RESPONSIVE
   ============================================================ */
@media (max-width: 1024px) {
  .hero .container {
    grid-template-columns: 1fr;
    text-align: center;
  }
  .hero-content p { max-width: 100%; }
  .hero-btns { justify-content: center; }
  .hero-stats { justify-content: center; }
  .features-grid,
  .testimonials-grid,
  .values-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .stats-row { grid-template-columns: repeat(2, 1fr); }
  .about-mission .container { grid-template-columns: 1fr; }
  .contact-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
  :root { --nav-height: 64px; }

  .nav-links {
    position: fixed;
    top: var(--nav-height);
    left: 0; right: 0;
    background: rgba(255,255,255,0.98);
    backdrop-filter: blur(20px);
    flex-direction: column;
    gap: 0;
    padding: var(--space-md) 0;
    box-shadow: var(--shadow-lg);
    transform: translateY(-110%);
    opacity: 0;
    transition: all var(--transition-base);
  }
  .nav-links.open {
    transform: translateY(0);
    opacity: 1;
  }
  .nav-links a {
    padding: var(--space-md) var(--space-xl);
    display: block;
    width: 100%;
    border-bottom: 1px solid var(--gray-100);
  }
  .nav-toggle { display: flex; }

  .section-title { font-size: 1.8rem; }
  .hero-content h1 { font-size: 2.2rem; }
  .hero-stats { flex-wrap: wrap; }

  .features-grid,
  .testimonials-grid,
  .values-grid { grid-template-columns: 1fr; }
  .stats-row { grid-template-columns: 1fr 1fr; }
  .form-row { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; }
  .footer-bottom { flex-direction: column; gap: var(--space-sm); text-align: center; }
}

@media (max-width: 480px) {
  .hero-content h1 { font-size: 1.8rem; }
  .hero-btns { flex-direction: column; align-items: center; }
  .hero-stats { flex-direction: column; align-items: center; gap: var(--space-md); }
  .stats-row { grid-template-columns: 1fr; }
  .section { padding: var(--space-3xl) 0; }
}
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