:root {
  --bg: #0a0a0b;
  --bg-elevated: #141416;
  --bg-card: #1a1a1f;
  --fg: #e8e6e3;
  --fg-muted: #8a8884;
  --accent: #f59e0b;
  --accent-glow: rgba(245, 158, 11, 0.15);
  --gradient: linear-gradient(135deg, #f59e0b 0%, #ef4444 50%, #f59e0b 100%);
  --font-display: 'Space Grotesk', sans-serif;
  --font-body: 'DM Sans', sans-serif;
  --radius: 12px;
  --max-w: 1100px;
}

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

body {
  background: var(--bg);
  color: var(--fg);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3 {
  font-family: var(--font-display);
  font-weight: 700;
  line-height: 1.15;
}

.gradient-text {
  background: var(--gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* HERO */
.hero {
  min-height: 90vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 120px 24px 80px;
  background: var(--bg);
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: -40%;
  left: 50%;
  transform: translateX(-50%);
  width: 800px;
  height: 800px;
  background: radial-gradient(circle, var(--accent-glow) 0%, transparent 70%);
  pointer-events: none;
}

.hero-inner {
  max-width: var(--max-w);
  text-align: center;
  position: relative;
  z-index: 1;
}

.hero-badge {
  display: inline-block;
  padding: 8px 20px;
  border: 1px solid rgba(245, 158, 11, 0.3);
  border-radius: 100px;
  font-family: var(--font-display);
  font-size: 13px;
  font-weight: 500;
  color: var(--accent);
  letter-spacing: 0.5px;
  text-transform: uppercase;
  margin-bottom: 32px;
}

.hero h1 {
  font-size: clamp(2.5rem, 6vw, 4.5rem);
  margin-bottom: 24px;
  letter-spacing: -0.02em;
}

.hero-sub {
  font-size: 1.15rem;
  color: var(--fg-muted);
  max-width: 620px;
  margin: 0 auto 48px;
  line-height: 1.7;
}

.hero-stats {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 40px;
  flex-wrap: wrap;
}

.stat { text-align: center; }

.stat-number {
  display: block;
  font-family: var(--font-display);
  font-size: 2rem;
  font-weight: 700;
  color: var(--accent);
}

.stat-label {
  font-size: 0.85rem;
  color: var(--fg-muted);
}

.stat-divider {
  width: 1px;
  height: 40px;
  background: rgba(255,255,255,0.1);
}

/* PROBLEM */
.problem {
  padding: 100px 24px;
  background: var(--bg-elevated);
}

.problem-inner {
  max-width: var(--max-w);
  margin: 0 auto;
}

.problem h2 {
  font-size: clamp(2rem, 4vw, 3rem);
  margin-bottom: 60px;
  letter-spacing: -0.02em;
}

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

.problem-card {
  background: var(--bg-card);
  border: 1px solid rgba(255,255,255,0.06);
  border-radius: var(--radius);
  padding: 36px 28px;
}

.problem-icon {
  font-family: var(--font-display);
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--accent);
  margin-bottom: 20px;
  letter-spacing: 0.5px;
}

.problem-card h3 {
  font-size: 1.25rem;
  margin-bottom: 12px;
}

.problem-card p {
  color: var(--fg-muted);
  font-size: 0.95rem;
  line-height: 1.65;
}

/* FEATURES */
.features {
  padding: 100px 24px;
  background: var(--bg);
}

.features-inner {
  max-width: var(--max-w);
  margin: 0 auto;
}

.features-header {
  margin-bottom: 60px;
}

.features-header h2 {
  font-size: clamp(2rem, 4vw, 3rem);
  letter-spacing: -0.02em;
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.feature-card {
  background: var(--bg-card);
  border: 1px solid rgba(255,255,255,0.06);
  border-radius: var(--radius);
  padding: 32px 24px;
  transition: border-color 0.2s;
}

.feature-card:hover {
  border-color: rgba(245, 158, 11, 0.25);
}

.feature-large {
  grid-column: span 2;
}

.feature-tag {
  display: inline-block;
  padding: 4px 12px;
  background: var(--accent-glow);
  border-radius: 6px;
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--accent);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-bottom: 16px;
}

.feature-card h3 {
  font-size: 1.2rem;
  margin-bottom: 10px;
}

.feature-card p {
  color: var(--fg-muted);
  font-size: 0.92rem;
  line-height: 1.65;
}

/* HOW */
.how {
  padding: 100px 24px;
  background: var(--bg-elevated);
}

.how-inner {
  max-width: var(--max-w);
  margin: 0 auto;
}

.how h2 {
  font-size: clamp(2rem, 4vw, 3rem);
  margin-bottom: 60px;
  letter-spacing: -0.02em;
}

.how-grid {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  gap: 32px;
  align-items: center;
  margin-bottom: 60px;
}

.how-step {
  background: var(--bg-card);
  border: 1px solid rgba(255,255,255,0.06);
  border-radius: var(--radius);
  padding: 40px 32px;
}

.step-num {
  font-family: var(--font-display);
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--accent);
  text-transform: uppercase;
  letter-spacing: 1px;
  margin-bottom: 16px;
}

.how-step h3 {
  font-size: 1.35rem;
  margin-bottom: 12px;
}

.how-step p {
  color: var(--fg-muted);
  font-size: 0.95rem;
  line-height: 1.65;
}

.how-connector {
  width: 60px;
  height: 2px;
  background: linear-gradient(90deg, var(--accent), transparent);
}

.how-industries {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  justify-content: center;
}

.industry-tag {
  padding: 10px 20px;
  border: 1px solid rgba(255,255,255,0.1);
  border-radius: 100px;
  font-family: var(--font-display);
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--fg-muted);
  transition: all 0.2s;
}

.industry-tag:hover {
  border-color: var(--accent);
  color: var(--accent);
}

/* CLOSING */
.closing {
  padding: 120px 24px;
  background: var(--bg);
  text-align: center;
  position: relative;
}

.closing::before {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, var(--accent-glow) 0%, transparent 70%);
  pointer-events: none;
}

.closing-inner {
  max-width: 700px;
  margin: 0 auto;
  position: relative;
  z-index: 1;
}

.closing h2 {
  font-size: clamp(1.8rem, 3.5vw, 2.5rem);
  margin-bottom: 24px;
  letter-spacing: -0.02em;
}

.closing-text {
  color: var(--fg-muted);
  font-size: 1.1rem;
  line-height: 1.75;
}

/* FOOTER */
.footer {
  padding: 40px 24px;
  background: var(--bg);
  border-top: 1px solid rgba(255,255,255,0.06);
}

.footer-inner {
  max-width: var(--max-w);
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.footer-brand {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.1rem;
}

.footer-tagline {
  color: var(--fg-muted);
  font-size: 0.85rem;
}

/* RESPONSIVE */
@media (max-width: 768px) {
  .problem-grid {
    grid-template-columns: 1fr;
  }

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

  .feature-large {
    grid-column: span 1;
  }

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

  .how-connector {
    width: 2px;
    height: 40px;
    margin: 0 auto;
    background: linear-gradient(180deg, var(--accent), transparent);
  }

  .hero-stats {
    gap: 24px;
  }

  .stat-divider {
    display: none;
  }

  .footer-inner {
    flex-direction: column;
    gap: 8px;
    text-align: center;
  }
}

/* ===== APP PAGES ===== */
.app-nav {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--bg-elevated);
  border-bottom: 1px solid rgba(255,255,255,0.06);
  padding: 0 24px;
}

.app-nav-inner {
  max-width: var(--max-w);
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}

.app-nav-brand {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.1rem;
  color: var(--fg);
  text-decoration: none;
}

.app-nav-links {
  display: flex;
  gap: 8px;
}

.app-nav-link {
  padding: 8px 16px;
  border-radius: 8px;
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--fg-muted);
  text-decoration: none;
  transition: all 0.2s;
}

.app-nav-link:hover, .app-nav-link.active {
  color: var(--fg);
  background: var(--bg-card);
}

.app-nav-link.active {
  color: var(--accent);
}

/* APP PAGE LAYOUT */
.app-page {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 40px 24px 80px;
}

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

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

.app-header p {
  color: var(--fg-muted);
}

/* GENERATOR FORM */
.generator-form {
  background: var(--bg-card);
  border: 1px solid rgba(255,255,255,0.06);
  border-radius: var(--radius);
  padding: 32px;
  margin-bottom: 40px;
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
  margin-bottom: 20px;
}

.form-row-3 {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: 20px;
  margin-bottom: 24px;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.form-group label {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--fg-muted);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.form-group input,
.form-group select,
.form-group textarea {
  background: var(--bg-elevated);
  border: 1px solid rgba(255,255,255,0.1);
  border-radius: 8px;
  padding: 12px 16px;
  color: var(--fg);
  font-family: var(--font-body);
  font-size: 1rem;
  transition: border-color 0.2s;
  outline: none;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  border-color: var(--accent);
}

.form-group textarea {
  resize: vertical;
  min-height: 80px;
}

/* BUTTONS */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 24px;
  border-radius: 8px;
  font-family: var(--font-display);
  font-size: 0.95rem;
  font-weight: 600;
  border: none;
  cursor: pointer;
  transition: all 0.2s;
  text-decoration: none;
}

.btn-primary {
  background: var(--accent);
  color: #000;
}

.btn-primary:hover {
  background: #e08d0a;
  transform: translateY(-1px);
}

.btn-primary:disabled {
  opacity: 0.5;
  cursor: not-allowed;
  transform: none;
}

.btn-secondary {
  background: var(--bg-card);
  color: var(--fg);
  border: 1px solid rgba(255,255,255,0.1);
}

.btn-secondary:hover {
  border-color: rgba(255,255,255,0.2);
}

.btn-ghost {
  background: transparent;
  color: var(--fg-muted);
  padding: 8px 12px;
}

.btn-ghost:hover {
  color: var(--fg);
  background: var(--bg-elevated);
}

/* LOADING STATE */
.btn-loading {
  position: relative;
  color: transparent !important;
}

.btn-loading::after {
  content: '';
  position: absolute;
  width: 18px;
  height: 18px;
  border: 2px solid rgba(0,0,0,0.3);
  border-top-color: #000;
  border-radius: 50%;
  animation: spin 0.7s linear infinite;
}

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

/* CAPTION CARDS */
.captions-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 20px;
  margin-top: 32px;
}

.caption-card {
  background: var(--bg-card);
  border: 1px solid rgba(255,255,255,0.06);
  border-radius: var(--radius);
  padding: 24px;
  transition: border-color 0.2s;
}

.caption-card:hover {
  border-color: rgba(245, 158, 11, 0.2);
}

.caption-num {
  font-family: var(--font-display);
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--accent);
  text-transform: uppercase;
  letter-spacing: 1px;
  margin-bottom: 12px;
}

.caption-hook {
  font-family: var(--font-display);
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--fg);
  margin-bottom: 10px;
  line-height: 1.4;
}

.caption-text {
  color: var(--fg-muted);
  font-size: 0.92rem;
  line-height: 1.65;
  margin-bottom: 16px;
}

.caption-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-bottom: 16px;
}

.tag {
  padding: 4px 10px;
  background: var(--accent-glow);
  border-radius: 6px;
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--accent);
}

.caption-actions {
  display: flex;
  gap: 8px;
}

/* ERROR / EMPTY STATES */
.error-msg {
  background: rgba(239, 68, 68, 0.1);
  border: 1px solid rgba(239, 68, 68, 0.3);
  border-radius: 8px;
  padding: 16px;
  color: #f87171;
  margin-bottom: 20px;
}

.empty-state {
  text-align: center;
  padding: 60px 24px;
  color: var(--fg-muted);
}

.empty-state-icon {
  font-size: 3rem;
  margin-bottom: 16px;
  opacity: 0.4;
}

/* CALENDAR */
.calendar-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 24px;
}

.calendar-week {
  display: grid;
  grid-template-columns: repeat(7, 1fr);
  gap: 12px;
  margin-bottom: 40px;
}

.calendar-day {
  background: var(--bg-card);
  border: 1px solid rgba(255,255,255,0.06);
  border-radius: var(--radius);
  padding: 16px;
  min-height: 140px;
}

.calendar-day.today {
  border-color: rgba(245, 158, 11, 0.3);
  background: var(--bg-elevated);
}

.day-label {
  font-family: var(--font-display);
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--fg-muted);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-bottom: 12px;
}

.day-label span {
  display: block;
  font-size: 1.4rem;
  color: var(--fg);
}

.calendar-post {
  background: var(--bg-elevated);
  border: 1px solid rgba(255,255,255,0.08);
  border-radius: 8px;
  padding: 10px 12px;
  margin-bottom: 8px;
  font-size: 0.82rem;
  cursor: pointer;
  transition: border-color 0.2s;
}

.calendar-post:hover {
  border-color: var(--accent);
}

.calendar-post-topic {
  color: var(--fg);
  font-weight: 500;
  margin-bottom: 4px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.calendar-post-platform {
  color: var(--fg-muted);
  font-size: 0.75rem;
  text-transform: capitalize;
}

.no-posts {
  color: var(--fg-muted);
  font-size: 0.8rem;
  opacity: 0.5;
}

@media (max-width: 768px) {
  .form-row, .form-row-3 {
    grid-template-columns: 1fr;
  }

  .calendar-week {
    grid-template-columns: 1fr 1fr;
  }

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