/* SmartCopy landing — Neo-brutalism. Brand: blue→green, accents purple + yellow. */
:root {
  --ink: #0f1117;
  --paper: #f5f3ea;
  --blue: #2b7fff;
  --green: #22d39a;
  --purple: #7c5cff;
  --yellow: #ffd23f;
  --shadow: 8px 8px 0 var(--ink);
  --shadow-sm: 4px 4px 0 var(--ink);
  --border: 3px solid var(--ink);
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: 'Space Grotesk', system-ui, sans-serif;
  background: var(--paper);
  color: var(--ink);
  /* subtle brutalist grid backdrop */
  background-image:
    linear-gradient(rgba(15, 17, 23, 0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(15, 17, 23, 0.04) 1px, transparent 1px);
  background-size: 28px 28px;
}

.tag,
.demo-head,
.card-num,
code {
  font-family: 'Space Mono', monospace;
}

/* ---------- buttons ---------- */
.btn {
  display: inline-block;
  font-family: 'Space Grotesk', sans-serif;
  font-weight: 700;
  text-decoration: none;
  color: var(--ink);
  background: #fff;
  border: var(--border);
  box-shadow: var(--shadow-sm);
  padding: 10px 18px;
  cursor: pointer;
  transition: transform 0.06s ease, box-shadow 0.06s ease;
  white-space: nowrap;
}
.btn:hover {
  transform: translate(-2px, -2px);
  box-shadow: 6px 6px 0 var(--ink);
}
.btn:active {
  transform: translate(2px, 2px);
  box-shadow: 1px 1px 0 var(--ink);
}
.btn-sm {
  font-size: 0.85rem;
  padding: 8px 14px;
}
.btn-lg {
  font-size: 1.05rem;
  padding: 14px 26px;
  background: var(--yellow);
}
.btn-ghost {
  background: #fff;
}

/* ---------- SECTION 1: HERO ---------- */
.hero {
  border-bottom: var(--border);
  padding: 0 0 70px;
}
.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 20px 6vw;
  border-bottom: var(--border);
  background: linear-gradient(90deg, var(--blue), var(--green));
}
.logo {
  font-weight: 700;
  font-size: 1.4rem;
  color: #fff;
  text-shadow: 2px 2px 0 var(--ink);
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 48px;
  align-items: center;
  max-width: 1200px;
  margin: 0 auto;
  padding: 60px 6vw 0;
}
.hero-left .tag {
  display: inline-block;
  background: var(--purple);
  color: #fff;
  border: var(--border);
  box-shadow: var(--shadow-sm);
  padding: 6px 12px;
  font-size: 0.75rem;
  letter-spacing: 1px;
  margin-bottom: 22px;
}
h1 {
  font-size: clamp(2.6rem, 6vw, 4.6rem);
  line-height: 0.95;
  letter-spacing: -1px;
  margin-bottom: 22px;
}
h1 .hl {
  background: var(--green);
  border: var(--border);
  box-shadow: var(--shadow-sm);
  padding: 0 8px;
  display: inline-block;
}
.lead {
  font-size: 1.15rem;
  line-height: 1.5;
  max-width: 30ch;
  margin-bottom: 30px;
}
.cta-row {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}
.sync-note {
  margin-top: 18px;
  font-family: 'Space Mono', monospace;
  font-size: 0.8rem;
  color: var(--ink);
  opacity: 0.75;
  max-width: 42ch;
}

/* live demo card */
.demo {
  background: #fff;
  border: var(--border);
  box-shadow: var(--shadow);
  padding: 22px;
}
.demo-head {
  font-size: 0.8rem;
  font-weight: 700;
  margin-bottom: 12px;
}
.demo-head code {
  background: var(--yellow);
  border: 2px solid var(--ink);
  padding: 1px 6px;
}
#demo-input {
  width: 100%;
  min-height: 130px;
  resize: none;
  border: var(--border);
  background: var(--paper);
  padding: 14px;
  font-family: 'Space Mono', monospace;
  font-size: 1rem;
  line-height: 1.5;
  color: var(--ink);
}
#demo-input:focus {
  outline: none;
  box-shadow: var(--shadow-sm);
}
.demo-chips {
  display: flex;
  gap: 10px;
  margin: 14px 0 8px;
  flex-wrap: wrap;
}
.chip {
  font-family: 'Space Mono', monospace;
  font-weight: 700;
  background: var(--blue);
  color: #fff;
  border: var(--border);
  box-shadow: var(--shadow-sm);
  padding: 6px 12px;
  cursor: pointer;
  transition: transform 0.06s;
}
.chip:hover {
  transform: translate(-2px, -2px);
}
.chip:active {
  transform: translate(2px, 2px);
  box-shadow: 1px 1px 0 var(--ink);
}
.demo-note {
  font-family: 'Space Mono', monospace;
  font-size: 0.78rem;
  color: #555;
}
.demo-note.flash {
  color: var(--ink);
  background: var(--green);
  display: inline-block;
  padding: 2px 6px;
  border: 2px solid var(--ink);
}

/* ---------- SECTION 2: FEATURES ---------- */
.features {
  max-width: 1200px;
  margin: 0 auto;
  padding: 70px 6vw 50px;
}
.features h2 {
  font-size: clamp(2rem, 5vw, 3.2rem);
  letter-spacing: -1px;
  margin-bottom: 40px;
  display: inline-block;
  background: var(--yellow);
  border: var(--border);
  box-shadow: var(--shadow);
  padding: 8px 18px;
  transform: rotate(-1.5deg);
}
.cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}
.card {
  border: var(--border);
  box-shadow: var(--shadow);
  padding: 26px 22px;
  min-height: 230px;
  transition: transform 0.08s ease, box-shadow 0.08s ease;
}
.card:hover {
  transform: translate(-3px, -3px);
  box-shadow: 11px 11px 0 var(--ink);
}
.card-num {
  font-size: 0.9rem;
  font-weight: 700;
  background: var(--ink);
  color: #fff;
  display: inline-block;
  padding: 3px 10px;
  margin-bottom: 16px;
}
.card h3 {
  font-size: 1.35rem;
  line-height: 1.05;
  margin-bottom: 12px;
}
.card p {
  font-size: 0.98rem;
  line-height: 1.45;
}
.card-blue { background: var(--blue); color: #fff; }
.card-green { background: var(--green); }
.card-purple { background: var(--purple); color: #fff; }
.card-blue .card-num,
.card-purple .card-num { background: #fff; color: var(--ink); }

.foot {
  margin-top: 48px;
  border: var(--border);
  box-shadow: var(--shadow-sm);
  background: #fff;
  padding: 18px 22px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
  font-family: 'Space Mono', monospace;
  font-size: 0.85rem;
}
.foot a {
  color: var(--ink);
  text-decoration: underline;
}
.foot a:hover {
  color: var(--blue);
}

/* ---------- responsive ---------- */
@media (max-width: 820px) {
  .hero-grid {
    grid-template-columns: 1fr;
    gap: 36px;
    padding-top: 44px;
  }
  .cards {
    grid-template-columns: 1fr;
  }
  .lead {
    max-width: none;
  }
}