/* ── TOKENS ─────────────────────────────────────────────────────────────── */
:root {
  --ink:        #111827;
  --ink-mid:    #6B7280;
  --ink-light:  #9CA3AF;
  --paper:      #FFFFFF;
  --paper-soft: #F5F3FF;   /* slight lavender tint — avoids plain grey */
  --border:     #E5E7EB;

  /* Brand */
  --indigo-deep: #1E1B4B;  /* hero background */
  --indigo:      #4F46E5;  /* primary in-app accent */
  --indigo-light:#EEF2FF;
  --coral:       #F43F5E;  /* CTA, hero pop */
  --coral-dark:  #E11D48;
  --teal:        #0D9488;  /* testimonials band */
  --teal-dark:   #0F766E;
  --green:       #059669;
  --red:         #DC2626;
}

/* ── RESET ──────────────────────────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Helvetica, Arial, sans-serif;
  background: var(--paper);
  color: var(--ink);
  min-height: 100vh;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

.hidden { display: none !important; }

/* ── LANDING NAV ────────────────────────────────────────────────────────── */
.site-nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1.25rem 2rem;
  background: var(--indigo-deep);
}

.nav-logo {
  font-size: 1.4rem;
  font-weight: 800;
  color: white;
  letter-spacing: -0.5px;
  text-decoration: none;
}
.nav-logo span { color: var(--coral); }

.nav-actions { display: flex; gap: 0.75rem; align-items: center; }

/* ── BUTTONS ─────────────────────────────────────────────────────────────── */
.btn-coral {
  background: var(--coral);
  color: white;
  border: none;
  border-radius: 8px;
  padding: 0.6rem 1.25rem;
  font-size: 0.9rem;
  font-weight: 700;
  cursor: pointer;
  transition: background 0.15s, transform 0.1s;
  letter-spacing: 0.01em;
  line-height: 1;
  display: inline-block;
}
.btn-coral:hover { background: var(--coral-dark); transform: translateY(-1px); }
.btn-coral.btn-lg { padding: 0.9rem 1.75rem; font-size: 1rem; border-radius: 10px; }
.btn-coral.btn-full { width: 100%; padding: 0.9rem; font-size: 1rem; border-radius: 8px; margin-top: 1rem; }

.btn-ghost {
  background: transparent;
  color: rgba(255,255,255,0.75);
  border: 1.5px solid rgba(255,255,255,0.25);
  border-radius: 8px;
  padding: 0.55rem 1.1rem;
  font-size: 0.9rem;
  font-weight: 600;
  cursor: pointer;
  transition: color 0.15s, border-color 0.15s;
  line-height: 1;
}
.btn-ghost:hover { color: white; border-color: rgba(255,255,255,0.6); }

.btn-outline {
  background: transparent;
  color: var(--indigo);
  border: 2px solid var(--indigo);
  border-radius: 10px;
  padding: 0.9rem 1.75rem;
  font-size: 1rem;
  font-weight: 700;
  cursor: pointer;
  transition: background 0.15s;
  line-height: 1;
  display: inline-block;
}
.btn-outline:hover { background: var(--indigo-light); }
.btn-outline.btn-full {
  width: 100%;
  padding: 0.85rem;
  border-radius: 8px;
  margin-top: 1rem;
  color: var(--indigo);
  border: 2px solid var(--indigo);
  font-weight: 700;
  font-size: 0.95rem;
  cursor: pointer;
}
.btn-outline.btn-full:hover { background: var(--indigo-light); }

/* ── HERO ────────────────────────────────────────────────────────────────── */
.hero {
  background: var(--indigo-deep);
  color: white;
  padding: 5rem max(2rem, calc((100% - 1100px) / 2));
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: center;
}

@media (max-width: 860px) {
  .hero { grid-template-columns: 1fr; gap: 3rem; padding: 3.5rem 1.5rem; }
  .hero-preview { order: -1; }
}

.hero-eyebrow {
  font-size: 0.78rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--coral);
  margin-bottom: 1rem;
}

.hero-headline {
  font-size: clamp(2.4rem, 5vw, 3.6rem);
  font-weight: 800;
  line-height: 1.12;
  letter-spacing: -1.5px;
  margin-bottom: 1.4rem;
  text-wrap: balance;
}

.hero-headline em {
  font-style: normal;
  color: var(--coral);
  text-decoration: underline;
  text-decoration-color: rgba(244,63,94,0.4);
  text-underline-offset: 6px;
  text-decoration-thickness: 3px;
}

.hero-sub {
  font-size: 1.05rem;
  color: rgba(255,255,255,0.72);
  line-height: 1.7;
  max-width: 440px;
  margin-bottom: 2rem;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-bottom: 0.9rem;
}

.hero-note {
  font-size: 0.8rem;
  color: rgba(255,255,255,0.45);
}

/* ── HERO PREVIEW CARD ──────────────────────────────────────────────────── */
.preview-card {
  background: rgba(255,255,255,0.06);
  border: 1px solid rgba(255,255,255,0.12);
  border-radius: 14px;
  padding: 1.5rem;
  backdrop-filter: blur(4px);
}

.preview-label {
  font-size: 0.72rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--coral);
  margin-bottom: 0.9rem;
}

.preview-body {
  font-size: 0.88rem;
  color: rgba(255,255,255,0.82);
  line-height: 1.7;
}

.preview-tag {
  display: inline-block;
  margin-top: 1.1rem;
  font-size: 0.72rem;
  font-weight: 600;
  color: rgba(255,255,255,0.45);
  background: rgba(255,255,255,0.08);
  padding: 0.3rem 0.7rem;
  border-radius: 20px;
}

/* ── SECTIONS SHARED ─────────────────────────────────────────────────────── */
.section-inner {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 2rem;
}
.section-inner.center { text-align: center; }

.section-eyebrow {
  font-size: 0.76rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--coral);
  margin-bottom: 0.75rem;
}
.section-eyebrow.light { color: rgba(255,255,255,0.55); }

.section-headline {
  font-size: clamp(1.6rem, 3vw, 2.2rem);
  font-weight: 800;
  letter-spacing: -0.5px;
  line-height: 1.2;
  margin-bottom: 3rem;
  text-wrap: balance;
}
.section-headline.light { color: white; }

/* ── FEATURES ────────────────────────────────────────────────────────────── */
.features {
  padding: 5.5rem 0;
  background: var(--paper);
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.25rem;
}

@media (max-width: 860px) {
  .features-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 560px) {
  .features-grid { grid-template-columns: 1fr; }
}

.feature-card {
  padding: 1.75rem;
  border: 1.5px solid var(--border);
  border-radius: 12px;
}

.feature-icon {
  font-size: 1.1rem;
  color: var(--coral);
  margin-bottom: 0.75rem;
  font-weight: 900;
}

.feature-card h3 {
  font-size: 1rem;
  font-weight: 700;
  margin-bottom: 0.5rem;
  color: var(--ink);
}

.feature-card p {
  font-size: 0.88rem;
  color: var(--ink-mid);
  line-height: 1.65;
}

/* ── TESTIMONIALS ────────────────────────────────────────────────────────── */
.testimonials {
  background: var(--teal);
  padding: 5.5rem 0;
}

.testimonials-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
}

@media (max-width: 860px) {
  .testimonials-grid { grid-template-columns: 1fr; gap: 1.25rem; }
}

.testimonial-card {
  background: rgba(255,255,255,0.1);
  border: 1px solid rgba(255,255,255,0.15);
  border-radius: 14px;
  padding: 1.75rem;
}

.testimonial-quote {
  font-size: 0.95rem;
  color: rgba(255,255,255,0.92);
  line-height: 1.7;
  margin-bottom: 1.5rem;
  font-style: italic;
}

.testimonial-author { display: flex; align-items: center; gap: 0.75rem; }

.author-avatar {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: rgba(255,255,255,0.2);
  color: white;
  font-size: 0.8rem;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  letter-spacing: 0.02em;
}

.author-name {
  font-size: 0.9rem;
  font-weight: 700;
  color: white;
}

.author-role {
  font-size: 0.78rem;
  color: rgba(255,255,255,0.6);
  margin-top: 0.1rem;
}

/* ── BOTTOM CTA ──────────────────────────────────────────────────────────── */
.bottom-cta {
  padding: 5.5rem 0;
  background: var(--paper-soft);
}

.bottom-cta-sub {
  font-size: 1rem;
  color: var(--ink-mid);
  max-width: 440px;
  margin: 0 auto 2rem;
  line-height: 1.65;
}

/* ── FOOTER ──────────────────────────────────────────────────────────────── */
.site-footer {
  background: var(--indigo-deep);
  color: rgba(255,255,255,0.4);
  padding: 1.5rem 2rem;
  display: flex;
  gap: 1.5rem;
  font-size: 0.82rem;
}

/* ── AUTH MODAL ──────────────────────────────────────────────────────────── */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.55);
  backdrop-filter: blur(3px);
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1.5rem;
}

.modal-card {
  background: var(--paper);
  border-radius: 16px;
  padding: 2.25rem;
  width: 100%;
  max-width: 400px;
  position: relative;
  box-shadow: 0 25px 60px rgba(0,0,0,0.3);
}

.modal-close {
  position: absolute;
  top: 1rem;
  right: 1rem;
  background: transparent;
  border: none;
  color: var(--ink-mid);
  font-size: 1rem;
  cursor: pointer;
  width: auto;
  padding: 0.3rem 0.5rem;
  margin: 0;
  line-height: 1;
  border-radius: 6px;
  transition: background 0.15s;
}
.modal-close:hover { background: var(--border); color: var(--ink); }

.auth-tabs {
  display: flex;
  border-bottom: 2px solid var(--border);
  margin-bottom: 1.75rem;
}

.auth-tab {
  flex: 1;
  background: none;
  border: none;
  border-bottom: 3px solid transparent;
  margin-bottom: -2px;
  padding: 0.65rem 0.5rem;
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--ink-mid);
  cursor: pointer;
  width: auto;
  margin-top: 0;
  border-radius: 0;
  transition: color 0.15s, border-color 0.15s;
  letter-spacing: 0;
}
.auth-tab:hover { color: var(--indigo); background: none; }
.auth-tab.active { color: var(--indigo); border-bottom-color: var(--indigo); }

.auth-error {
  color: var(--red);
  font-size: 0.82rem;
  margin-top: -0.5rem;
  margin-bottom: 0.75rem;
  background: #FEF2F2;
  padding: 0.5rem 0.75rem;
  border-radius: 6px;
}

.auth-success {
  color: var(--green);
  font-size: 0.85rem;
  margin-top: -0.5rem;
  margin-bottom: 0.75rem;
  background: #F0FDF4;
  padding: 0.5rem 0.75rem;
  border-radius: 6px;
}

/* ── FORM ELEMENTS ───────────────────────────────────────────────────────── */
.form-group { margin-bottom: 1.1rem; }

label {
  display: block;
  font-size: 0.78rem;
  font-weight: 700;
  color: var(--ink-mid);
  margin-bottom: 0.35rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

input[type="email"],
input[type="password"],
select,
textarea {
  width: 100%;
  padding: 0.65rem 0.9rem;
  border: 1.5px solid var(--border);
  border-radius: 8px;
  font-size: 0.95rem;
  color: var(--ink);
  background: var(--paper);
  transition: border-color 0.15s, box-shadow 0.15s;
  appearance: none;
  font-family: inherit;
}

input:focus, select:focus, textarea:focus {
  outline: none;
  border-color: var(--indigo);
  box-shadow: 0 0 0 3px rgba(79,70,229,0.1);
}

textarea {
  min-height: 88px;
  resize: vertical;
  line-height: 1.55;
}

/* ── APP SHELL ───────────────────────────────────────────────────────────── */
#app { min-height: 100vh; background: var(--paper-soft); }

.app-header {
  background: var(--indigo-deep);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 2rem;
  height: 60px;
  position: sticky;
  top: 0;
  z-index: 10;
}

#app-nav {
  display: flex;
  gap: 0;
  height: 100%;
  align-items: stretch;
}

.nav-btn {
  background: transparent;
  color: rgba(255,255,255,0.65);
  border: none;
  border-bottom: 3px solid transparent;
  padding: 0 1.1rem;
  font-size: 0.88rem;
  font-weight: 600;
  cursor: pointer;
  width: auto;
  margin: 0;
  height: 100%;
  border-radius: 0;
  transition: color 0.15s, border-color 0.15s;
  display: flex;
  align-items: center;
  letter-spacing: 0;
}
.nav-btn:hover { color: white; background: transparent; }
.nav-btn.active { color: white; border-bottom-color: var(--coral); }
.nav-btn.signout {
  margin-left: auto;
  color: rgba(255,255,255,0.45);
  font-size: 0.82rem;
  border-bottom-color: transparent;
}
.nav-btn.signout:hover { color: rgba(255,255,255,0.8); background: transparent; }

.app-main {
  max-width: 720px;
  margin: 2.5rem auto;
  padding: 0 1.25rem;
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

/* ── CARDS ───────────────────────────────────────────────────────────────── */
.card {
  background: var(--paper);
  border-radius: 14px;
  padding: 2rem;
  border: 1.5px solid var(--border);
}

.card h2 {
  font-size: 1.15rem;
  font-weight: 700;
  margin-bottom: 1.5rem;
  color: var(--ink);
  letter-spacing: -0.2px;
}

.subtitle {
  font-size: 0.85rem;
  color: var(--ink-mid);
  margin-bottom: 1.25rem;
  margin-top: -1rem;
}

.field-group {
  border-top: 1.5px solid var(--border);
  padding-top: 1.25rem;
  margin-top: 0.25rem;
}

/* Default button reset for inside app */
button {
  font-family: inherit;
  cursor: pointer;
}

/* ── RESULTS ─────────────────────────────────────────────────────────────── */
#results {
  background: var(--paper);
  border-radius: 14px;
  padding: 2rem;
  border: 1.5px solid var(--border);
}

#results h2 {
  font-size: 1.15rem;
  font-weight: 700;
  margin-bottom: 0.3rem;
  letter-spacing: -0.2px;
}

.caption-card {
  border: 1.5px solid var(--border);
  border-radius: 10px;
  padding: 1.2rem;
  margin-bottom: 1rem;
  cursor: pointer;
  transition: border-color 0.15s, background 0.15s;
  position: relative;
}
.caption-card:hover { border-color: var(--indigo); background: var(--indigo-light); }
.caption-card.copied { border-color: var(--green); background: #F0FDF4; }

.caption-label {
  font-size: 0.72rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--indigo);
  margin-bottom: 0.6rem;
}

.caption-text {
  font-size: 0.92rem;
  line-height: 1.7;
  color: #374151;
  white-space: pre-wrap;
}

.caption-actions {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-top: 0.8rem;
}

.copy-hint {
  font-size: 0.75rem;
  color: var(--ink-light);
}
.caption-card.copied .copy-hint { color: var(--green); font-weight: 600; }

.save-btn {
  width: auto;
  padding: 0.3rem 0.85rem;
  font-size: 0.78rem;
  margin: 0;
  background: var(--border);
  color: var(--ink);
  border: none;
  border-radius: 6px;
  cursor: pointer;
  font-weight: 700;
  transition: background 0.15s;
}
.save-btn:hover { background: #D1D5DB; }
.save-btn.saved { background: #D1FAE5; color: #065F46; }

/* ── GENERATE BUTTON (in card) ───────────────────────────────────────────── */
#generate-btn {
  width: 100%;
  padding: 0.85rem;
  background: var(--coral);
  color: white;
  border: none;
  border-radius: 8px;
  font-size: 0.95rem;
  font-weight: 700;
  cursor: pointer;
  margin-top: 1rem;
  transition: background 0.15s;
  letter-spacing: 0.01em;
}
#generate-btn:hover { background: var(--coral-dark); }

/* ── LOADING ─────────────────────────────────────────────────────────────── */
#loading {
  text-align: center;
  padding: 3.5rem 1rem;
}

.spinner {
  width: 38px;
  height: 38px;
  border: 3.5px solid var(--border);
  border-top-color: var(--coral);
  border-radius: 50%;
  animation: spin 0.75s linear infinite;
  margin: 0 auto 1rem;
}

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

#loading p { color: var(--ink-mid); font-size: 0.92rem; }

/* ── VIDEO RESULTS ───────────────────────────────────────────────────────── */
.video-note {
  font-size: 0.82rem;
  color: var(--ink-mid);
  background: var(--indigo-light);
  border: 1px solid #C7D2FE;
  border-radius: 8px;
  padding: 0.65rem 1rem;
  margin-top: 0.5rem;
}

#video-results {
  background: var(--paper);
  border-radius: 14px;
  padding: 2rem;
  border: 1.5px solid var(--border);
}

#video-results h2 {
  font-size: 1.15rem;
  font-weight: 700;
  margin-bottom: 1.5rem;
  letter-spacing: -0.2px;
}

#video-results h3 {
  font-size: 0.78rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.07em;
  color: var(--ink-mid);
  margin-bottom: 0.6rem;
}

#video-status-box { text-align: center; padding: 2rem 0; }
#video-status-box p { color: var(--ink-mid); font-size: 0.92rem; margin-top: 1rem; }

#video-script-box {
  background: var(--paper-soft);
  border: 1.5px solid var(--border);
  border-radius: 10px;
  padding: 1.25rem;
  margin-bottom: 1.5rem;
}

#video-script-text {
  font-size: 0.9rem;
  line-height: 1.75;
  color: #374151;
}

.download-btn {
  display: block;
  text-align: center;
  margin-top: 1rem;
  padding: 0.75rem;
  background: var(--green);
  color: white;
  border-radius: 8px;
  text-decoration: none;
  font-weight: 700;
  font-size: 0.92rem;
  transition: background 0.15s;
}
.download-btn:hover { background: #047857; }

/* ── SAVED CONTENT ───────────────────────────────────────────────────────── */
.saved-card {
  border: 1.5px solid var(--border);
  border-radius: 10px;
  padding: 1.1rem 1.25rem;
  margin-bottom: 1rem;
}

.saved-meta {
  display: flex;
  gap: 0.6rem;
  align-items: center;
  margin-bottom: 0.7rem;
  flex-wrap: wrap;
}

.saved-type {
  background: var(--indigo-light);
  color: var(--indigo);
  font-size: 0.7rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.07em;
  padding: 0.2rem 0.55rem;
  border-radius: 4px;
}

.saved-topic {
  font-size: 0.85rem;
  color: #374151;
  font-weight: 600;
}

.saved-date {
  font-size: 0.76rem;
  color: var(--ink-light);
  margin-left: auto;
}

.saved-text {
  font-size: 0.88rem;
  line-height: 1.7;
  color: #374151;
  white-space: pre-wrap;
}

.saved-actions { display: flex; gap: 0.5rem; margin-top: 0.8rem; }

.copy-saved-btn, .delete-btn {
  width: auto;
  padding: 0.35rem 0.9rem;
  font-size: 0.78rem;
  margin: 0;
  border: none;
  border-radius: 6px;
  cursor: pointer;
  font-weight: 700;
}
.copy-saved-btn { background: var(--border); color: var(--ink); }
.copy-saved-btn:hover { background: #D1D5DB; }
.delete-btn { background: #FEF2F2; color: #B91C1C; }
.delete-btn:hover { background: #FEE2E2; }

/* ── RESPONSIVE ──────────────────────────────────────────────────────────── */
@media (max-width: 600px) {
  .site-nav { padding: 1rem 1.25rem; }
  .app-header { padding: 0 1rem; }
  .app-main { margin: 1.5rem auto; padding: 0 1rem; }
  .card, #results, #video-results { padding: 1.4rem; }
  .section-inner { padding: 0 1.25rem; }
  .features { padding: 3.5rem 0; }
  .testimonials { padding: 3.5rem 0; }
  .bottom-cta { padding: 3.5rem 0; }
  .hero-actions { flex-direction: column; }
  .hero-actions .btn-outline { text-align: center; }
}