:root {
  --earth: #1a1a0e;
  --soil: #2d2a1e;
  --moss: #4a6741;
  --leaf: #7fb069;
  --sand: #e8dcc4;
  --cream: #f5f0e6;
  --bark: #8b7355;
  --smoke: rgba(255,255,255,0.06);
}

* { margin: 0; padding: 0; box-sizing: border-box; }

body {
  background: var(--earth);
  color: var(--cream);
  font-family: 'DM Sans', sans-serif;
  overflow-x: hidden;
  line-height: 1.6;
}

/* ---- HERO ---- */
.hero {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: flex-start;
  padding: 6rem 8vw;
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: -20%;
  right: -10%;
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(127,176,105,0.15) 0%, transparent 70%);
  border-radius: 50%;
  pointer-events: none;
}

.hero-label {
  font-family: 'Space Mono', monospace;
  font-size: 0.75rem;
  letter-spacing: 0.3em;
  text-transform: uppercase;
  color: var(--leaf);
  margin-bottom: 2rem;
  opacity: 0.8;
}

.hero h1 {
  font-family: 'Syne', sans-serif;
  font-size: clamp(3rem, 8vw, 7rem);
  font-weight: 800;
  line-height: 0.95;
  color: var(--cream);
  max-width: 800px;
  margin-bottom: 2rem;
}

.hero h1 span {
  color: var(--leaf);
}

.hero-sub {
  font-size: clamp(1.1rem, 2vw, 1.4rem);
  color: var(--bark);
  max-width: 520px;
  line-height: 1.7;
}

.hero-stat {
  display: flex;
  gap: 3rem;
  margin-top: 4rem;
  padding-top: 2rem;
  border-top: 1px solid rgba(127,176,105,0.2);
}

.hero-stat div {
  display: flex;
  flex-direction: column;
}

.hero-stat .number {
  font-family: 'Syne', sans-serif;
  font-size: 2rem;
  font-weight: 700;
  color: var(--leaf);
}

.hero-stat .label {
  font-size: 0.8rem;
  color: var(--bark);
  letter-spacing: 0.05em;
  margin-top: 0.25rem;
}

/* ---- PROBLEM ---- */
.problem {
  padding: 8rem 8vw;
  background: var(--soil);
  position: relative;
}

.problem::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--moss), transparent);
}

.problem-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  max-width: 1100px;
}

.problem-left h2 {
  font-family: 'Syne', sans-serif;
  font-size: clamp(2rem, 4vw, 3.2rem);
  font-weight: 700;
  line-height: 1.1;
  margin-bottom: 1.5rem;
}

.problem-left p {
  color: var(--bark);
  font-size: 1.05rem;
  line-height: 1.8;
}

.problem-right {
  display: flex;
  flex-direction: column;
  gap: 2rem;
}

.problem-card {
  background: var(--earth);
  border: 1px solid rgba(127,176,105,0.12);
  border-radius: 12px;
  padding: 1.8rem;
}

.problem-card .card-num {
  font-family: 'Space Mono', monospace;
  font-size: 0.7rem;
  color: var(--leaf);
  letter-spacing: 0.2em;
  margin-bottom: 0.75rem;
}

.problem-card h3 {
  font-family: 'Syne', sans-serif;
  font-size: 1.2rem;
  font-weight: 600;
  margin-bottom: 0.5rem;
}

.problem-card p {
  font-size: 0.9rem;
  color: var(--bark);
  line-height: 1.6;
}

/* ---- LIFECYCLE ---- */
.lifecycle {
  padding: 8rem 8vw;
  text-align: center;
}

.lifecycle h2 {
  font-family: 'Syne', sans-serif;
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 700;
  margin-bottom: 1rem;
}

.lifecycle .subtitle {
  color: var(--bark);
  font-size: 1.1rem;
  margin-bottom: 4rem;
}

.lifecycle-steps {
  display: flex;
  justify-content: center;
  gap: 1rem;
  flex-wrap: wrap;
  max-width: 1000px;
  margin: 0 auto;
}

.step {
  flex: 1;
  min-width: 200px;
  max-width: 240px;
  background: var(--soil);
  border-radius: 16px;
  padding: 2.5rem 1.5rem;
  position: relative;
  border: 1px solid rgba(127,176,105,0.08);
  transition: border-color 0.3s;
}

.step:hover {
  border-color: rgba(127,176,105,0.3);
}

.step-icon {
  font-size: 2rem;
  margin-bottom: 1rem;
  display: block;
}

.step h3 {
  font-family: 'Syne', sans-serif;
  font-size: 1.1rem;
  font-weight: 600;
  margin-bottom: 0.6rem;
}

.step p {
  font-size: 0.85rem;
  color: var(--bark);
  line-height: 1.6;
}

.step-num {
  position: absolute;
  top: 1rem;
  right: 1.2rem;
  font-family: 'Space Mono', monospace;
  font-size: 0.65rem;
  color: var(--moss);
  letter-spacing: 0.15em;
}

/* ---- MATERIALS ---- */
.materials {
  padding: 8rem 8vw;
  background: linear-gradient(180deg, var(--earth) 0%, var(--soil) 100%);
}

.materials-inner {
  max-width: 900px;
  margin: 0 auto;
}

.materials h2 {
  font-family: 'Syne', sans-serif;
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 700;
  margin-bottom: 3rem;
  text-align: center;
}

.material-list {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.5rem;
}

.material-item {
  padding: 2rem;
  border-left: 3px solid var(--moss);
  background: rgba(127,176,105,0.04);
  border-radius: 0 8px 8px 0;
}

.material-item h3 {
  font-family: 'Syne', sans-serif;
  font-size: 1.1rem;
  font-weight: 600;
  margin-bottom: 0.5rem;
  color: var(--leaf);
}

.material-item p {
  font-size: 0.9rem;
  color: var(--bark);
  line-height: 1.6;
}

/* ---- CLOSING ---- */
.closing {
  padding: 10rem 8vw;
  text-align: center;
  position: relative;
}

.closing::before {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 500px;
  height: 500px;
  background: radial-gradient(circle, rgba(127,176,105,0.08) 0%, transparent 70%);
  pointer-events: none;
}

.closing h2 {
  font-family: 'Syne', sans-serif;
  font-size: clamp(2.5rem, 5vw, 4rem);
  font-weight: 800;
  line-height: 1.05;
  max-width: 700px;
  margin: 0 auto 1.5rem;
  position: relative;
}

.closing p {
  font-size: 1.15rem;
  color: var(--bark);
  max-width: 500px;
  margin: 0 auto;
  line-height: 1.7;
  position: relative;
}

/* ---- FOOTER ---- */
.site-footer {
  padding: 3rem 8vw;
  border-top: 1px solid rgba(127,176,105,0.1);
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.8rem;
  color: var(--bark);
}

.site-footer .brand {
  font-family: 'Syne', sans-serif;
  font-weight: 700;
  font-size: 1rem;
  color: var(--cream);
}

.footer-tagline {
  font-family: 'Space Mono', monospace;
  font-size: 0.7rem;
  letter-spacing: 0.15em;
  opacity: 0.6;
}

/* ---- HERO PRICE ROW ---- */
.hero-price-row {
  display: none; /* price shown in stat bar below — row kept for potential future layout */
}

.hero-price {
  font-family: 'Syne', sans-serif;
  font-size: 1.6rem;
  font-weight: 700;
  color: var(--cream);
}

.hero-price .per-unit {
  font-family: 'DM Sans', sans-serif;
  font-size: 0.9rem;
  font-weight: 400;
  color: var(--bark);
}

/* ---- USE CASES ---- */
.usecases {
  padding: 8rem 8vw;
  background: var(--earth);
  position: relative;
}

.usecases-inner {
  max-width: 1100px;
}

.section-label {
  font-family: 'Space Mono', monospace;
  font-size: 0.7rem;
  letter-spacing: 0.3em;
  text-transform: uppercase;
  color: var(--leaf);
  opacity: 0.7;
  display: block;
  margin-bottom: 1rem;
}

.usecases h2 {
  font-family: 'Syne', sans-serif;
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 700;
  margin-bottom: 3rem;
  line-height: 1.1;
}

.usecases h2 span {
  color: var(--leaf);
}

.usecase-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.25rem;
}

.usecase-card {
  background: var(--soil);
  border: 1px solid rgba(127,176,105,0.1);
  border-radius: 16px;
  padding: 2rem 1.75rem;
  position: relative;
  overflow: hidden;
  transition: border-color 0.25s ease, transform 0.25s ease;
}

.usecase-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--moss), var(--leaf));
  opacity: 0;
  transition: opacity 0.25s ease;
}

.usecase-card:hover {
  border-color: rgba(127,176,105,0.28);
  transform: translateY(-3px);
}

.usecase-card:hover::before {
  opacity: 1;
}

.usecase-icon {
  font-size: 2rem;
  margin-bottom: 0.75rem;
  display: block;
  line-height: 1;
}

.usecase-tag {
  font-family: 'Space Mono', monospace;
  font-size: 0.65rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--leaf);
  margin-bottom: 0.75rem;
  opacity: 0.8;
}

.usecase-card h3 {
  font-family: 'Syne', sans-serif;
  font-size: 1.15rem;
  font-weight: 600;
  color: var(--cream);
  margin-bottom: 0.75rem;
}

.usecase-card p {
  font-size: 0.85rem;
  color: var(--bark);
  line-height: 1.65;
  margin-bottom: 1.25rem;
}

.usecase-bullets {
  list-style: none;
  padding: 0;
  margin: 0;
  border-top: 1px solid rgba(127,176,105,0.1);
  padding-top: 1rem;
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}

.usecase-bullets li {
  font-size: 0.8rem;
  color: var(--bark);
  padding-left: 1.1rem;
  position: relative;
}

.usecase-bullets li::before {
  content: '→';
  position: absolute;
  left: 0;
  color: var(--moss);
  font-size: 0.75rem;
}

/* ---- CLOSING CTA ---- */
.closing h2 span {
  color: var(--leaf);
}

.closing-actions {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1rem;
  margin-top: 3rem;
  position: relative;
}

.btn-primary {
  display: inline-block;
  padding: 1rem 2.5rem;
  background: var(--leaf);
  color: var(--earth);
  font-family: 'Syne', sans-serif;
  font-weight: 700;
  font-size: 0.95rem;
  letter-spacing: 0.05em;
  text-decoration: none;
  border-radius: 4px;
  transition: background 0.2s ease, transform 0.2s ease;
}

.btn-primary:hover {
  background: var(--sand);
  transform: translateY(-2px);
}

.closing-subtext {
  font-family: 'Space Mono', monospace;
  font-size: 0.7rem;
  letter-spacing: 0.15em;
  color: var(--bark);
  opacity: 0.6;
}

/* ---- WAITLIST FORM ---- */
.waitlist-form {
  width: 100%;
  max-width: 480px;
}

.waitlist-input-group {
  display: flex;
  gap: 0.75rem;
  align-items: center;
}

.waitlist-input-group input[type="email"] {
  flex: 1;
  padding: 0.9rem 1.25rem;
  background: rgba(255,255,255,0.06);
  border: 1px solid rgba(127,176,105,0.2);
  border-radius: 4px;
  color: var(--cream);
  font-family: 'DM Sans', sans-serif;
  font-size: 1rem;
  outline: none;
  transition: border-color 0.2s ease, background 0.2s ease;
  min-width: 0;
}

.waitlist-input-group input[type="email"]::placeholder {
  color: var(--bark);
  opacity: 0.6;
}

.waitlist-input-group input[type="email"]:focus {
  border-color: var(--leaf);
  background: rgba(255,255,255,0.09);
}

.waitlist-input-group .btn-primary {
  padding: 0.9rem 1.5rem;
  flex-shrink: 0;
  white-space: nowrap;
}

.waitlist-feedback {
  margin-top: 0.75rem;
  font-size: 0.85rem;
  font-family: 'DM Sans', sans-serif;
  min-height: 1.2em;
}

.waitlist-feedback.success {
  color: var(--leaf);
}

.waitlist-feedback.error {
  color: #e07070;
}

/* ---- RESPONSIVE ---- */
@media (max-width: 768px) {
  .hero { padding: 4rem 6vw; min-height: 90vh; }
  .hero-stat { gap: 2rem; flex-wrap: wrap; }
  .problem { padding: 5rem 6vw; }
  .problem-grid { grid-template-columns: 1fr; gap: 2.5rem; }
  .lifecycle { padding: 5rem 6vw; }
  .lifecycle-steps { flex-direction: column; align-items: center; }
  .step { max-width: 100%; }
  .materials { padding: 5rem 6vw; }
  .material-list { grid-template-columns: 1fr; }
  .closing { padding: 6rem 6vw; }
  .site-footer { flex-direction: column; gap: 1rem; text-align: center; }
  .usecases { padding: 5rem 6vw; }
  .usecase-grid { grid-template-columns: 1fr 1fr; gap: 1rem; }
  .closing { padding: 6rem 6vw; }
}

@media (max-width: 480px) {
  .usecase-grid { grid-template-columns: 1fr; }
  .waitlist-input-group { flex-direction: column; }
  .waitlist-input-group input[type="email"] { width: 100%; }
  .waitlist-input-group .btn-primary { width: 100%; }
}