/* ===== PlanMint Design System ===== */
* { margin: 0; padding: 0; box-sizing: border-box; }

:root {
  --mint: #00D68F;
  --mint-light: #E6FFF5;
  --mint-dark: #00A76F;
  --ink: #0A1628;
  --ink-light: #3D4F6F;
  --ink-muted: #8899B0;
  --surface: #F7F9FC;
  --white: #FFFFFF;
  --radius: 12px;
  --radius-sm: 8px;
  --radius-lg: 20px;
  --shadow: 0 4px 24px rgba(10, 22, 40, 0.08);
  --shadow-lg: 0 8px 40px rgba(10, 22, 40, 0.12);
  --transition: 0.2s ease;
}

body {
  font-family: 'DM Sans', -apple-system, BlinkMacSystemFont, sans-serif;
  color: var(--ink);
  background: var(--white);
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  line-height: 1.6;
}

h1, h2, h3, h4 {
  font-family: 'Space Grotesk', sans-serif;
  line-height: 1.2;
}

a { color: inherit; text-decoration: none; }

.container {
  max-width: 1120px;
  margin: 0 auto;
  padding: 0 24px;
}

/* ===== NAV ===== */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  background: rgba(10, 22, 40, 0.95);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(255,255,255,0.06);
}

.nav-inner {
  max-width: 1120px;
  margin: 0 auto;
  padding: 0 24px;
  height: 64px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.logo {
  font-family: 'Space Grotesk', sans-serif;
  font-weight: 700;
  font-size: 1.25rem;
  color: var(--white);
  display: flex;
  align-items: center;
  gap: 8px;
}

.logo-icon {
  color: var(--mint);
  font-size: 1.1rem;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 32px;
}

.nav-links a {
  color: var(--ink-muted);
  font-size: 0.9rem;
  font-weight: 500;
  transition: color var(--transition);
}

.nav-links a:hover { color: var(--white); }

/* ===== BUTTONS ===== */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: 'DM Sans', sans-serif;
  font-weight: 600;
  border: none;
  cursor: pointer;
  transition: all var(--transition);
  border-radius: var(--radius-sm);
  text-decoration: none;
}

.btn-primary {
  background: var(--mint);
  color: var(--ink);
  padding: 12px 28px;
  font-size: 0.95rem;
}

.btn-primary:hover {
  background: var(--mint-dark);
  transform: translateY(-1px);
  box-shadow: 0 4px 16px rgba(0, 214, 143, 0.3);
}

.btn-sm { padding: 8px 20px; font-size: 0.85rem; }
.btn-lg { padding: 16px 36px; font-size: 1.05rem; border-radius: var(--radius); }

.btn-outline {
  background: transparent;
  color: var(--ink);
  border: 2px solid var(--ink);
  padding: 10px 24px;
  font-size: 0.95rem;
}

.btn-outline:hover {
  background: var(--ink);
  color: var(--white);
}

.btn-arrow {
  font-size: 1.1em;
  transition: transform var(--transition);
}

.btn:hover .btn-arrow { transform: translateX(3px); }

.btn:disabled {
  opacity: 0.6;
  cursor: not-allowed;
  transform: none !important;
}

/* ===== HERO ===== */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  position: relative;
  overflow: hidden;
  background: linear-gradient(160deg, var(--ink) 0%, #132040 50%, #0A1628 100%);
}

.hero-glow {
  position: absolute;
  border-radius: 50%;
  pointer-events: none;
}

.hero-glow-1 {
  top: -30%;
  right: -20%;
  width: 800px;
  height: 800px;
  background: radial-gradient(circle, rgba(0,214,143,0.15) 0%, transparent 70%);
}

.hero-glow-2 {
  bottom: -20%;
  left: -10%;
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(0,214,143,0.08) 0%, transparent 70%);
}

.hero-inner {
  max-width: 1120px;
  margin: 0 auto;
  padding: 120px 24px 80px;
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: center;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(0, 214, 143, 0.1);
  border: 1px solid rgba(0, 214, 143, 0.2);
  padding: 6px 16px;
  border-radius: 100px;
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--mint);
  margin-bottom: 24px;
}

.badge-dot {
  width: 6px;
  height: 6px;
  background: var(--mint);
  border-radius: 50%;
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.4; }
}

.hero h1 {
  font-size: 3.4rem;
  font-weight: 700;
  color: var(--white);
  margin-bottom: 20px;
  letter-spacing: -0.02em;
}

.text-mint { color: var(--mint); }

.hero-subtitle {
  font-size: 1.15rem;
  color: var(--ink-muted);
  line-height: 1.7;
  margin-bottom: 36px;
  max-width: 480px;
}

.hero-cta {
  display: flex;
  align-items: center;
  gap: 20px;
}

.hero-note {
  font-size: 0.85rem;
  color: var(--ink-muted);
}

/* Hero visual card */
.hero-card {
  background: rgba(255,255,255,0.04);
  border: 1px solid rgba(255,255,255,0.08);
  border-radius: var(--radius-lg);
  overflow: hidden;
  backdrop-filter: blur(8px);
}

.hero-card-header {
  padding: 14px 18px;
  display: flex;
  gap: 8px;
  border-bottom: 1px solid rgba(255,255,255,0.06);
}

.card-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: rgba(255,255,255,0.15);
}

.hero-card-body {
  padding: 28px;
}

.typing-line {
  margin-bottom: 24px;
}

.typing-label {
  font-size: 0.75rem;
  color: var(--ink-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  display: block;
  margin-bottom: 6px;
}

.typing-text {
  color: rgba(255,255,255,0.8);
  font-size: 0.95rem;
  font-style: italic;
}

.plan-preview {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: 12px;
}

.mini-tier {
  background: rgba(255,255,255,0.04);
  border: 1px solid rgba(255,255,255,0.08);
  border-radius: var(--radius-sm);
  padding: 16px 12px;
  text-align: center;
  transition: all var(--transition);
  position: relative;
}

.mini-tier-highlight {
  background: rgba(0, 214, 143, 0.08);
  border-color: rgba(0, 214, 143, 0.3);
}

.mini-badge {
  position: absolute;
  top: -8px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--mint);
  color: var(--ink);
  font-size: 0.6rem;
  font-weight: 700;
  padding: 2px 10px;
  border-radius: 100px;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.mini-tier-name {
  font-family: 'Space Grotesk', sans-serif;
  font-size: 0.8rem;
  color: var(--ink-muted);
  margin-bottom: 6px;
}

.mini-tier-price {
  font-family: 'Space Grotesk', sans-serif;
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--white);
}

.mini-tier-price span {
  font-size: 0.65rem;
  font-weight: 400;
  color: var(--ink-muted);
}

/* ===== SECTIONS ===== */
.section {
  padding: 96px 0;
}

.section-dark {
  background: var(--surface);
}

.section-cta {
  background: linear-gradient(160deg, var(--ink) 0%, #132040 100%);
  color: var(--white);
}

.section-header {
  text-align: center;
  margin-bottom: 56px;
}

.section-header h2 {
  font-size: 2.2rem;
  margin-bottom: 12px;
}

.section-header p {
  color: var(--ink-muted);
  font-size: 1.1rem;
}

/* ===== STEPS ===== */
.steps-grid {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0;
}

.step-card {
  background: var(--white);
  border: 1px solid rgba(10, 22, 40, 0.08);
  border-radius: var(--radius);
  padding: 36px 28px;
  max-width: 280px;
  text-align: center;
  box-shadow: var(--shadow);
  transition: all var(--transition);
}

.step-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}

.step-number {
  width: 44px;
  height: 44px;
  background: var(--mint-light);
  color: var(--mint-dark);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: 'Space Grotesk', sans-serif;
  font-weight: 700;
  font-size: 1.1rem;
  margin: 0 auto 16px;
}

.step-card h3 {
  font-size: 1.1rem;
  margin-bottom: 8px;
}

.step-card p {
  font-size: 0.9rem;
  color: var(--ink-light);
  line-height: 1.6;
}

.step-connector {
  display: flex;
  align-items: center;
  padding: 0 12px;
  color: var(--ink-muted);
  font-size: 1.2rem;
}

.connector-line {
  width: 24px;
  height: 2px;
  background: rgba(10, 22, 40, 0.1);
}

.connector-arrow {
  margin-left: 4px;
  color: var(--mint);
}

/* ===== FEATURES ===== */
.features-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}

.feature-card {
  background: var(--white);
  border: 1px solid rgba(10, 22, 40, 0.06);
  border-radius: var(--radius);
  padding: 32px;
  transition: all var(--transition);
}

.feature-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow);
}

.feature-icon {
  width: 48px;
  height: 48px;
  background: var(--mint-light);
  color: var(--mint-dark);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.3rem;
  margin-bottom: 16px;
}

.feature-card h3 {
  font-size: 1.05rem;
  margin-bottom: 8px;
}

.feature-card p {
  font-size: 0.9rem;
  color: var(--ink-light);
}

/* ===== FAQ ===== */
.faq-list {
  max-width: 680px;
  margin: 0 auto;
}

.faq-item {
  border-bottom: 1px solid rgba(10, 22, 40, 0.08);
}

.faq-question {
  width: 100%;
  background: none;
  border: none;
  padding: 20px 0;
  font-family: 'Space Grotesk', sans-serif;
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--ink);
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  text-align: left;
}

.faq-chevron {
  font-size: 1.4rem;
  color: var(--mint);
  transition: transform var(--transition);
  line-height: 1;
}

.faq-item.open .faq-chevron {
  transform: rotate(180deg);
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s ease;
}

.faq-item.open .faq-answer {
  max-height: 200px;
}

.faq-answer p {
  padding: 0 0 20px;
  color: var(--ink-light);
  font-size: 0.95rem;
  line-height: 1.7;
}

/* ===== FOOTER ===== */
.footer {
  padding: 40px 0;
  border-top: 1px solid rgba(10, 22, 40, 0.06);
}

.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.footer-brand {
  font-family: 'Space Grotesk', sans-serif;
  font-weight: 700;
  font-size: 1.1rem;
  display: flex;
  align-items: center;
  gap: 6px;
}

.footer-links {
  display: flex;
  gap: 24px;
}

.footer-links a {
  color: var(--ink-muted);
  font-size: 0.85rem;
  transition: color var(--transition);
}

.footer-links a:hover { color: var(--ink); }

.footer-copy {
  font-size: 0.8rem;
  color: var(--ink-muted);
}

/* ===== APP PAGE ===== */
.app-page {
  min-height: 100vh;
  background: var(--surface);
  padding-top: 64px;
}

.app-container {
  max-width: 1120px;
  margin: 0 auto;
  padding: 48px 24px;
}

.app-header {
  text-align: center;
  margin-bottom: 40px;
}

.app-header h1 {
  font-size: 2rem;
  margin-bottom: 8px;
}

.app-header p {
  color: var(--ink-muted);
  font-size: 1rem;
}

/* Input section */
.input-section {
  max-width: 680px;
  margin: 0 auto 48px;
}

.input-card {
  background: var(--white);
  border: 1px solid rgba(10, 22, 40, 0.08);
  border-radius: var(--radius-lg);
  padding: 32px;
  box-shadow: var(--shadow);
}

.input-label {
  font-family: 'Space Grotesk', sans-serif;
  font-weight: 600;
  font-size: 1rem;
  margin-bottom: 12px;
  display: block;
}

.input-textarea {
  width: 100%;
  min-height: 140px;
  padding: 16px;
  border: 2px solid rgba(10, 22, 40, 0.08);
  border-radius: var(--radius-sm);
  font-family: 'DM Sans', sans-serif;
  font-size: 0.95rem;
  color: var(--ink);
  resize: vertical;
  transition: border-color var(--transition);
  line-height: 1.6;
}

.input-textarea:focus {
  outline: none;
  border-color: var(--mint);
}

.input-textarea::placeholder {
  color: var(--ink-muted);
}

.input-footer {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-top: 16px;
}

.char-count {
  font-size: 0.8rem;
  color: var(--ink-muted);
}

.examples-section {
  margin-top: 20px;
}

.examples-label {
  font-size: 0.8rem;
  color: var(--ink-muted);
  margin-bottom: 8px;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  font-weight: 600;
}

.examples-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.example-chip {
  background: var(--mint-light);
  color: var(--mint-dark);
  border: none;
  padding: 6px 14px;
  border-radius: 100px;
  font-size: 0.8rem;
  font-weight: 500;
  cursor: pointer;
  font-family: 'DM Sans', sans-serif;
  transition: all var(--transition);
}

.example-chip:hover {
  background: var(--mint);
  color: var(--ink);
}

/* Results */
.results-section {
  display: none;
}

.results-section.visible {
  display: block;
  animation: fadeUp 0.5s ease;
}

@keyframes fadeUp {
  from { opacity: 0; transform: translateY(20px); }
  to { opacity: 1; transform: translateY(0); }
}

.tiers-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-bottom: 40px;
}

.tier-card {
  background: var(--white);
  border: 2px solid rgba(10, 22, 40, 0.06);
  border-radius: var(--radius-lg);
  padding: 36px 28px;
  position: relative;
  transition: all var(--transition);
}

.tier-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}

.tier-card.highlighted {
  border-color: var(--mint);
  box-shadow: 0 8px 40px rgba(0, 214, 143, 0.15);
}

.tier-badge {
  position: absolute;
  top: -12px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--mint);
  color: var(--ink);
  font-size: 0.7rem;
  font-weight: 700;
  padding: 4px 16px;
  border-radius: 100px;
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

.tier-name {
  font-family: 'Space Grotesk', sans-serif;
  font-size: 1.3rem;
  font-weight: 700;
  margin-bottom: 4px;
}

.tier-target {
  font-size: 0.85rem;
  color: var(--ink-muted);
  margin-bottom: 20px;
}

.tier-price {
  margin-bottom: 6px;
}

.tier-price-amount {
  font-family: 'Space Grotesk', sans-serif;
  font-size: 2.6rem;
  font-weight: 700;
  color: var(--ink);
}

.tier-price-period {
  font-size: 0.9rem;
  color: var(--ink-muted);
  margin-left: 2px;
}

.tier-annual {
  font-size: 0.8rem;
  color: var(--mint-dark);
  font-weight: 600;
  margin-bottom: 24px;
}

.tier-features {
  list-style: none;
  padding: 0;
  margin-bottom: 28px;
}

.tier-features li {
  padding: 8px 0;
  font-size: 0.9rem;
  color: var(--ink-light);
  display: flex;
  align-items: flex-start;
  gap: 10px;
  border-bottom: 1px solid rgba(10, 22, 40, 0.04);
}

.tier-features li:last-child { border-bottom: none; }

.tier-check {
  color: var(--mint);
  font-size: 1rem;
  flex-shrink: 0;
  margin-top: 1px;
}

.tier-cta {
  width: 100%;
  padding: 14px;
  border-radius: var(--radius-sm);
  font-family: 'DM Sans', sans-serif;
  font-weight: 600;
  font-size: 0.95rem;
  cursor: default;
  border: 2px solid rgba(10, 22, 40, 0.08);
  background: var(--white);
  color: var(--ink);
  text-align: center;
}

.tier-card.highlighted .tier-cta {
  background: var(--mint);
  color: var(--ink);
  border-color: var(--mint);
}

/* Recommendations & Strategy */
.recs-section {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
  margin-bottom: 40px;
}

.rec-card {
  background: var(--white);
  border: 1px solid rgba(10, 22, 40, 0.06);
  border-radius: var(--radius);
  padding: 28px;
}

.rec-card h3 {
  font-size: 1.1rem;
  margin-bottom: 16px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.rec-icon {
  color: var(--mint);
}

.rec-item {
  padding: 12px 0;
  border-bottom: 1px solid rgba(10, 22, 40, 0.04);
}

.rec-item:last-child { border-bottom: none; }

.rec-method {
  font-weight: 600;
  font-size: 0.95rem;
  margin-bottom: 4px;
}

.rec-reasoning {
  font-size: 0.85rem;
  color: var(--ink-light);
  line-height: 1.6;
}

.strategy-text {
  font-size: 0.95rem;
  color: var(--ink-light);
  line-height: 1.8;
}

/* Loading */
.loading-section {
  display: none;
  text-align: center;
  padding: 60px 0;
}

.loading-section.visible {
  display: block;
}

.spinner {
  width: 48px;
  height: 48px;
  border: 3px solid rgba(10, 22, 40, 0.08);
  border-top-color: var(--mint);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
  margin: 0 auto 20px;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

.loading-text {
  color: var(--ink-muted);
  font-size: 1rem;
}

.loading-subtext {
  color: var(--ink-muted);
  font-size: 0.85rem;
  margin-top: 8px;
  opacity: 0.7;
}

/* Error */
.error-banner {
  display: none;
  max-width: 680px;
  margin: 0 auto 24px;
  background: #FFF5F5;
  border: 1px solid #FED7D7;
  border-radius: var(--radius-sm);
  padding: 14px 20px;
  color: #C53030;
  font-size: 0.9rem;
}

.error-banner.visible {
  display: block;
  animation: fadeUp 0.3s ease;
}

/* Generate another */
.generate-again {
  text-align: center;
  margin-top: 20px;
}

/* ===== BILLING TOGGLE ===== */
.billing-toggle {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 12px;
  margin-bottom: 32px;
}

.billing-label {
  font-size: 0.9rem;
  color: var(--ink-muted);
  font-weight: 500;
  cursor: pointer;
}

.billing-label.active {
  color: var(--ink);
  font-weight: 600;
}

.toggle-switch {
  width: 44px;
  height: 24px;
  background: var(--ink-muted);
  border-radius: 12px;
  position: relative;
  cursor: pointer;
  transition: background var(--transition);
}

.toggle-switch.active {
  background: var(--mint);
}

.toggle-knob {
  width: 20px;
  height: 20px;
  background: var(--white);
  border-radius: 50%;
  position: absolute;
  top: 2px;
  left: 2px;
  transition: transform var(--transition);
  box-shadow: 0 1px 3px rgba(0,0,0,0.15);
}

.toggle-switch.active .toggle-knob {
  transform: translateX(20px);
}

/* ===== RESPONSIVE ===== */
@media (max-width: 768px) {
  .hero-inner {
    grid-template-columns: 1fr;
    gap: 48px;
    padding: 100px 24px 60px;
  }

  .hero h1 { font-size: 2.4rem; }

  .hero-visual { display: none; }

  .hero-cta {
    flex-direction: column;
    align-items: flex-start;
  }

  .steps-grid {
    flex-direction: column;
    gap: 16px;
  }

  .step-connector {
    transform: rotate(90deg);
    padding: 8px 0;
  }

  .features-grid {
    grid-template-columns: 1fr;
  }

  .tiers-grid {
    grid-template-columns: 1fr;
    max-width: 400px;
    margin-left: auto;
    margin-right: auto;
  }

  .recs-section {
    grid-template-columns: 1fr;
  }

  .footer-inner {
    flex-direction: column;
    gap: 16px;
    text-align: center;
  }

  .nav-links a:not(.btn) {
    display: none;
  }
}

@media (max-width: 480px) {
  .hero h1 { font-size: 1.9rem; }
  .section { padding: 64px 0; }
  .section-header h2 { font-size: 1.7rem; }
}