@import url('https://fonts.googleapis.com/css2?family=Plus+Jakarta+Sans:wght@400;500;600;700;800&family=JetBrains+Mono:wght@400;500;600&family=Newsreader:ital,opsz,wght@1,6..72,400;1,6..72,500&display=swap');

:root {
  --bg-color: #0b0d13;
  --surface-color: #12151f;
  --surface-hover: #181d2a;
  --border-color: #212638;
  --text-primary: #f8fafc;
  --text-secondary: #94a3b8;
  --accent-color: #10b981;
  --accent-glow: rgba(16, 185, 129, 0.2);
  --card-light: #ffffff;
}

[data-theme="light"] {
  --bg-color: #f8fafc;
  --surface-color: #ffffff;
  --surface-hover: #f1f5f9;
  --border-color: #e2e8f0;
  --text-primary: #0f172a;
  --text-secondary: #475569;
  --accent-color: #059669;
  --accent-glow: rgba(5, 150, 105, 0.15);
}

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

body {
  background-color: var(--bg-color);
  color: var(--text-primary);
  font-family: 'Plus Jakarta Sans', -apple-system, sans-serif;
  line-height: 1.5;
  transition: background-color 0.2s ease, color 0.2s ease;
  min-height: 100vh;
}

.mono {
  font-family: 'JetBrains Mono', monospace;
}

.serif-italic {
  font-family: 'Newsreader', serif;
  font-style: italic;
  font-weight: 400;
}

.container {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 1.25rem;
}

/* Header & Navigation */
.header-nav {
  position: sticky;
  top: 0;
  z-index: 40;
  backdrop-filter: blur(12px);
  background-color: rgba(11, 13, 19, 0.85);
  border-bottom: 1px solid var(--border-color);
  padding: 0.85rem 0;
}

[data-theme="light"] .header-nav {
  background-color: rgba(248, 250, 252, 0.9);
}

.nav-wrapper {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.brand-badge {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  text-decoration: none;
  color: var(--text-primary);
  font-weight: 700;
  font-size: 1.15rem;
}

.brand-icon {
  width: 32px;
  height: 32px;
  border-radius: 8px;
  background: linear-gradient(135deg, #10b981, #047857);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-size: 0.8rem;
  font-weight: 800;
}

.brand-accent {
  color: var(--accent-color);
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.6rem 1.15rem;
  font-size: 0.875rem;
  font-weight: 600;
  border-radius: 10px;
  cursor: pointer;
  border: 1px solid transparent;
  text-decoration: none;
  transition: all 0.15s ease;
}

.btn-primary {
  background: var(--accent-color);
  color: #022c22;
}

.btn-primary:hover {
  filter: brightness(1.1);
  box-shadow: 0 0 15px var(--accent-glow);
}

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

.btn-outline:hover {
  background: var(--surface-hover);
}

.btn-icon {
  padding: 0.55rem;
  border-radius: 8px;
  background: var(--surface-color);
  border: 1px solid var(--border-color);
  color: var(--text-secondary);
  cursor: pointer;
}

.btn-icon:hover {
  color: var(--text-primary);
}

/* Inputs */
.input-field {
  width: 100%;
  padding: 0.75rem 1rem;
  background: var(--bg-color);
  border: 1px solid var(--border-color);
  color: var(--text-primary);
  border-radius: 8px;
  font-size: 0.95rem;
  outline: none;
  transition: border-color 0.15s ease;
}

.input-field:focus {
  border-color: var(--accent-color);
}

/* Hero Section */
.hero-section {
  text-align: center;
  padding: 4.5rem 1rem 3.5rem;
}

.pill-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.35rem 0.85rem;
  border-radius: 9999px;
  background: rgba(16, 185, 129, 0.1);
  border: 1px solid rgba(16, 185, 129, 0.3);
  color: var(--accent-color);
  font-size: 0.78rem;
  font-weight: 600;
  margin-bottom: 1.5rem;
}

.pulse-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--accent-color);
  animation: pulse-ring 1.8s infinite;
}

@keyframes pulse-ring {
  0% { transform: scale(0.9); opacity: 0.8; }
  50% { transform: scale(1.3); opacity: 1; }
  100% { transform: scale(0.9); opacity: 0.8; }
}

.hero-title {
  font-size: clamp(2.4rem, 6vw, 4.2rem);
  font-weight: 800;
  line-height: 1.1;
  letter-spacing: -0.03em;
  margin-bottom: 1.25rem;
}

.hero-subtitle {
  max-width: 620px;
  margin: 0 auto 2.25rem;
  color: var(--text-secondary);
  font-size: 1.15rem;
  line-height: 1.6;
}

/* Handle Claim Bar */
.claim-bar {
  display: inline-flex;
  align-items: center;
  background: var(--surface-color);
  border: 1px solid var(--border-color);
  border-radius: 14px;
  padding: 0.45rem 0.5rem 0.45rem 1.1rem;
  gap: 0.5rem;
  max-width: 460px;
  width: 100%;
  box-shadow: 0 10px 30px rgba(0,0,0,0.15);
}

.claim-prefix {
  font-size: 0.95rem;
  color: var(--text-secondary);
  font-weight: 600;
}

.claim-input {
  background: transparent;
  border: none;
  color: var(--text-primary);
  outline: none;
  width: 100%;
  font-size: 0.95rem;
  font-family: 'JetBrains Mono', monospace;
}

/* Cards & Containers */
.card {
  background: var(--surface-color);
  border: 1px solid var(--border-color);
  border-radius: 16px;
  padding: 1.75rem;
}

.grid-2 {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 1.5rem;
  margin-top: 3.5rem;
}

/* Comparison Cards */
.card-problem {
  background: rgba(239, 68, 68, 0.04);
  border: 1px solid rgba(239, 68, 68, 0.2);
  border-radius: 16px;
  padding: 1.75rem;
}

[data-theme="light"] .card-problem {
  background: #fff1f2;
  border-color: #fecdd3;
  color: #881337;
}

.card-solution {
  background: rgba(16, 185, 129, 0.05);
  border: 1px solid rgba(16, 185, 129, 0.3);
  border-radius: 16px;
  padding: 1.75rem;
}

[data-theme="light"] .card-solution {
  background: #f0fdf4;
  border-color: #bbf7d0;
  color: #064e3b;
}

/* Modals */
.modal-overlay {
  display: none;
  position: fixed;
  inset: 0;
  z-index: 100;
  background: rgba(0, 0, 0, 0.75);
  backdrop-filter: blur(6px);
  align-items: center;
  justify-content: center;
  padding: 1rem;
}

.modal-content {
  background: var(--surface-color);
  border: 1px solid var(--border-color);
  border-radius: 16px;
  max-width: 400px;
  width: 100%;
  padding: 2rem;
  box-shadow: 0 20px 40px rgba(0,0,0,0.5);
}