/* ===== Custom Properties ===== */
:root {
  --green:        #2d6a4f;
  --green-dark:   #1c3f2f;
  --green-light:  #52b788;
  --ink:          #1c2b22;
  --ink-muted:    #5c7268;
  --bg:           #f7f9f7;
  --bg-alt:       #eef2ee;
  --hero-bg:      #111a14;
  --border:       #d4e0d8;

  --font-serif: "Lora", Georgia, serif;
  --font-sans:  "Inter", system-ui, sans-serif;
  --font-mono:  "Space Mono", "Courier New", monospace;

  --radius: 4px;
  --max-width: 1040px;
  --ease: cubic-bezier(0.19, 1, 0.22, 1);
}

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

html { font-size: 16px; scroll-behavior: smooth; }

body {
  font-family: var(--font-sans);
  color: var(--ink);
  background: var(--bg);
  line-height: 1.6;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  -webkit-font-smoothing: antialiased;
}

main { flex: 1; }
img  { max-width: 100%; display: block; }
a    { color: inherit; text-decoration: none; }

/* ===== Scroll progress ===== */
.progress-bar {
  position: fixed;
  top: 0; left: 0;
  height: 2px;
  width: 0%;
  background: var(--green-light);
  z-index: 100;
  transition: width 0.1s linear;
}

/* ===== Nav ===== */
nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 50;
  transition: background 0.4s var(--ease), border-color 0.4s var(--ease), backdrop-filter 0.4s var(--ease);
  border-bottom: 1px solid transparent;
}

nav.scrolled {
  background: rgba(17, 26, 20, 0.85);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-color: rgba(82, 183, 136, 0.15);
}

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}

.nav-logo {
  font-family: var(--font-mono);
  font-size: 0.88rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: #fff;
}

.nav-cta {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.06em;
  color: var(--green-light);
  padding: 0.45rem 1rem;
  border: 1px solid rgba(82, 183, 136, 0.4);
  border-radius: var(--radius);
  transition: background 0.2s, color 0.2s;
}

.nav-cta:hover {
  background: var(--green-light);
  color: var(--hero-bg);
}

/* ===== Layout ===== */
.container {
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 2rem;
}

/* ===== Hero ===== */
.hero {
  min-height: 100vh;
  background: var(--hero-bg);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 8rem 2rem 6rem;
  position: relative;
}

.hero-content {
  max-width: 760px;
}

.kicker {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--green-light);
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  margin-bottom: 2rem;
}

.kicker-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--green-light);
  display: inline-block;
  animation: pulse 2.4s ease-in-out infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50%       { opacity: 0.4; transform: scale(0.7); }
}

.hero h1 {
  font-family: var(--font-serif);
  font-size: clamp(2.6rem, 6vw, 4.8rem);
  font-weight: 600;
  letter-spacing: -0.02em;
  line-height: 1.1;
  color: #fff;
  margin-bottom: 1.75rem;
}

.hero h1 em {
  font-style: italic;
  color: var(--green-light);
}

.hero-sub {
  font-size: clamp(1rem, 1.8vw, 1.15rem);
  color: #7a9e8a;
  max-width: 520px;
  margin: 0 auto 2.75rem;
  line-height: 1.75;
}

.hero-cta {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--font-mono);
  font-size: 0.82rem;
  letter-spacing: 0.06em;
  color: #fff;
  padding: 0.85rem 1.75rem;
  border: 1px solid rgba(255,255,255,0.25);
  border-radius: var(--radius);
  transition: background 0.25s var(--ease), border-color 0.25s var(--ease), color 0.25s var(--ease);
}

.hero-cta:hover {
  background: var(--green);
  border-color: var(--green);
  color: #fff;
}

.hero-cta .arrow {
  transition: transform 0.25s var(--ease);
}

.hero-cta:hover .arrow {
  transform: translateX(4px);
}

.scroll-cue {
  position: absolute;
  bottom: 2.5rem;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
}

.scroll-line {
  width: 1px;
  height: 48px;
  background: linear-gradient(to bottom, rgba(82,183,136,0.7), transparent);
  animation: scrollDrop 2s ease-in-out infinite;
}

@keyframes scrollDrop {
  0%   { transform: scaleY(0); transform-origin: top; opacity: 0; }
  40%  { transform: scaleY(1); transform-origin: top; opacity: 1; }
  60%  { transform: scaleY(1); transform-origin: bottom; }
  100% { transform: scaleY(0); transform-origin: bottom; opacity: 0; }
}

/* ===== Sections ===== */
.section {
  padding: 7rem 0;
}

.section-label {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--green);
  margin-bottom: 3rem;
}

/* ===== Pillars ===== */
.pillars {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
}

.pillar {
  padding: 2.5rem 2rem;
  background: #fff;
  border-top: 2px solid transparent;
  transition: border-color 0.3s var(--ease), background 0.3s var(--ease);
}

.pillar:hover {
  border-color: var(--green);
  background: var(--bg);
}

.pillar-num {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.1em;
  color: var(--green-light);
  display: block;
  margin-bottom: 1.25rem;
}

.pillar h3 {
  font-family: var(--font-serif);
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--ink);
  margin-bottom: 0.75rem;
  line-height: 1.3;
}

.pillar p {
  font-size: 0.95rem;
  color: var(--ink-muted);
  line-height: 1.7;
}

/* ===== Contact section ===== */
.contact-section {
  background: var(--bg-alt);
  border-top: 1px solid var(--border);
}

.contact-container {
  max-width: 720px;
}

.contact-header {
  margin-bottom: 3rem;
}

.contact-header h2 {
  font-family: var(--font-serif);
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 600;
  letter-spacing: -0.02em;
  color: var(--ink);
  margin-bottom: 0.75rem;
  line-height: 1.15;
}

.contact-sub {
  font-size: 1rem;
  color: var(--ink-muted);
  max-width: 480px;
  line-height: 1.7;
}

/* ===== Form ===== */
.contact-form-wrapper {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 2.5rem;
}

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

.form-group {
  margin-bottom: 1.25rem;
}

.form-group label {
  font-family: var(--font-sans);
  display: block;
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--ink-muted);
  margin-bottom: 0.4rem;
}

.form-group .optional {
  font-weight: 400;
  text-transform: none;
  letter-spacing: 0;
}

.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: 0.7rem 0.9rem;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  font-family: var(--font-sans);
  font-size: 0.95rem;
  color: var(--ink);
  background: var(--bg);
  outline: none;
  transition: border-color 0.2s, box-shadow 0.2s;
  appearance: none;
}

.form-group select {
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath fill='%235c7268' d='M6 8L0 0h12z'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 0.9rem center;
  padding-right: 2.5rem;
  cursor: pointer;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  border-color: var(--green);
  box-shadow: 0 0 0 3px rgba(45, 106, 79, 0.12);
}

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

.btn-submit {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  letter-spacing: 0.06em;
  color: #fff;
  background: var(--green);
  border: none;
  padding: 0.9rem 1.75rem;
  border-radius: var(--radius);
  cursor: pointer;
  transition: background 0.2s var(--ease);
  width: 100%;
  justify-content: center;
}

.btn-submit:hover {
  background: var(--green-dark);
}

.btn-submit .arrow {
  transition: transform 0.2s var(--ease);
}

.btn-submit:hover .arrow {
  transform: translateX(4px);
}

#form-status {
  margin-top: 1rem;
  padding: 0.75rem 1rem;
  border-radius: var(--radius);
  font-size: 0.88rem;
  display: none;
}

#form-status.success {
  background: #d8f3e3;
  color: var(--green);
  border: 1px solid #a8d5b8;
  display: block;
}

#form-status.error {
  background: #fce8e6;
  color: #c0392b;
  border: 1px solid #f5c6c2;
  display: block;
}

/* ===== Footer ===== */
footer {
  border-top: 1px solid var(--border);
  padding: 2rem 0;
}

.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 0.82rem;
  color: var(--ink-muted);
}

.footer-logo {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--ink);
}

/* ===== Scroll animations ===== */
.fade-up {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.7s var(--ease), transform 0.7s var(--ease);
}

.fade-up.visible {
  opacity: 1;
  transform: translateY(0);
}

.pillars .pillar:nth-child(2) { transition-delay: 0.1s; }
.pillars .pillar:nth-child(3) { transition-delay: 0.2s; }

/* ===== Responsive ===== */
@media (max-width: 720px) {
  .pillars {
    grid-template-columns: 1fr;
  }

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

  .section {
    padding: 4rem 0;
  }

  .footer-inner {
    flex-direction: column;
    gap: 0.5rem;
    text-align: center;
  }
}

/* ===== Reduced motion ===== */
@media (prefers-reduced-motion: reduce) {
  .fade-up {
    opacity: 1;
    transform: none;
    transition: none;
  }

  .kicker-dot,
  .scroll-line {
    animation: none;
  }
}