/* ============================================================
   Reset & Base
   ============================================================ */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Inter', sans-serif;
  background: #f5f7fa;
  color: #1a1a2e;
  min-height: 100vh;
}

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

/* ============================================================
   Main App Layout
   ============================================================ */
.container {
  max-width: 900px;
  margin: 0 auto;
  padding: 0 20px 60px;
}

/* ============================================================
   Header
   ============================================================ */
header {
  padding: 24px 0 32px;
}

.header-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
  margin-bottom: 36px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 8px;
  text-decoration: none;
}

.brand-icon { font-size: 1.6rem; }

.brand-name {
  font-size: 1.25rem;
  font-weight: 800;
  color: #1a1a2e;
  letter-spacing: -0.02em;
}

.header-nav {
  display: flex;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
}

.nav-link {
  font-size: 0.9rem;
  font-weight: 600;
  color: #4f6ef7;
}

.nav-link:hover { text-decoration: underline; }

/* User bar */
.user-bar {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
}

.user-avatar {
  width: 34px;
  height: 34px;
  border-radius: 50%;
  object-fit: cover;
  border: 2px solid #4f6ef7;
}

.user-name {
  font-size: 0.9rem;
  font-weight: 600;
  color: #333;
}

.credits-badge {
  background: #eef1ff;
  color: #4f6ef7;
  border: 1px solid #c8d0f8;
  border-radius: 20px;
  padding: 3px 12px;
  font-size: 0.82rem;
  font-weight: 700;
  white-space: nowrap;
}

.credits-badge.credits-low {
  background: #fff3e0;
  color: #e65100;
  border-color: #ffcc80;
}

.btn-upgrade {
  background: linear-gradient(135deg, #4f6ef7, #7c3aed);
  color: #fff;
  border: none;
  padding: 6px 14px;
  border-radius: 20px;
  font-size: 0.82rem;
  font-weight: 700;
  cursor: pointer;
  transition: opacity 0.2s;
}

.btn-upgrade:hover { opacity: 0.9; }

.btn-logout {
  background: transparent;
  border: 1px solid #c0c8d8;
  color: #888;
  padding: 5px 12px;
  border-radius: 6px;
  font-size: 0.82rem;
  cursor: pointer;
  transition: all 0.2s;
}

.btn-logout:hover {
  background: #f0f3ff;
  color: #4f6ef7;
  border-color: #4f6ef7;
}

/* Guest bar */
#guestBar {
  align-items: center;
  gap: 10px;
}

.guest-hint {
  font-size: 0.85rem;
  color: #888;
}

.btn-signin-cta {
  background: #4f6ef7;
  color: #fff;
  border: none;
  padding: 7px 16px;
  border-radius: 8px;
  font-size: 0.85rem;
  font-weight: 600;
  cursor: pointer;
  transition: background 0.2s;
}

.btn-signin-cta:hover { background: #3a57e8; }

/* Hero */
.hero {
  text-align: center;
}

.hero h1 {
  font-size: clamp(1.8rem, 4vw, 2.6rem);
  font-weight: 800;
  letter-spacing: -0.03em;
  line-height: 1.2;
  margin-bottom: 12px;
}

.hero-highlight {
  background: linear-gradient(135deg, #4f6ef7, #7c3aed);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.subtitle {
  color: #666;
  font-size: 1.05rem;
}

/* ============================================================
   Upload Area
   ============================================================ */
.upload-area {
  border: 2px dashed #c0c8d8;
  border-radius: 16px;
  background: #fff;
  padding: 64px 20px;
  text-align: center;
  cursor: pointer;
  transition: border-color 0.2s, background 0.2s;
}

.upload-area:hover,
.upload-area.dragover {
  border-color: #4f6ef7;
  background: #f0f3ff;
}

.upload-icon { font-size: 3rem; margin-bottom: 16px; }

.upload-area p {
  color: #555;
  font-size: 1rem;
  margin-bottom: 6px;
}

.upload-area .link {
  color: #4f6ef7;
  font-weight: 600;
}

.upload-area .hint {
  font-size: 0.85rem;
  color: #999;
}

/* ============================================================
   Result Area
   ============================================================ */
.result-area {
  background: #fff;
  border-radius: 16px;
  padding: 32px;
  box-shadow: 0 2px 16px rgba(0,0,0,0.07);
}

.compare {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
  margin-bottom: 28px;
}

@media (max-width: 600px) {
  .compare { grid-template-columns: 1fr; }
}

.compare-item { text-align: center; }

.compare-item .label {
  font-size: 0.85rem;
  font-weight: 700;
  color: #888;
  margin-bottom: 10px;
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

.compare-item img {
  width: 100%;
  max-height: 360px;
  object-fit: contain;
  border-radius: 10px;
  border: 1px solid #eee;
}

.checker-bg {
  background-image:
    linear-gradient(45deg, #d0d0d0 25%, transparent 25%),
    linear-gradient(-45deg, #d0d0d0 25%, transparent 25%),
    linear-gradient(45deg, transparent 75%, #d0d0d0 75%),
    linear-gradient(-45deg, transparent 75%, #d0d0d0 75%);
  background-size: 20px 20px;
  background-position: 0 0, 0 10px, 10px -10px, -10px 0;
  background-color: #f8f8f8;
  border-radius: 10px;
  border: 1px solid #eee;
}

.checker-bg img { border: none; }

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

/* ============================================================
   Buttons (shared)
   ============================================================ */
.btn-primary {
  background: #4f6ef7;
  color: #fff;
  border: none;
  padding: 12px 28px;
  border-radius: 8px;
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  transition: background 0.2s;
  text-decoration: none;
  display: inline-block;
}

.btn-primary:hover { background: #3a57e8; }

.btn-secondary {
  background: #f0f3ff;
  color: #4f6ef7;
  border: 1px solid #c0c8d8;
  padding: 12px 28px;
  border-radius: 8px;
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  transition: background 0.2s;
}

.btn-secondary:hover { background: #e0e6ff; }

/* ============================================================
   Loading & Error
   ============================================================ */
.loading {
  text-align: center;
  padding: 60px 20px;
  background: #fff;
  border-radius: 16px;
}

.spinner {
  width: 48px;
  height: 48px;
  border: 4px solid #e0e6ff;
  border-top-color: #4f6ef7;
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
  margin: 0 auto 16px;
}

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

.loading p { color: #666; font-size: 1rem; }

.error {
  background: #fff0f0;
  border: 1px solid #ffcccc;
  color: #cc0000;
  border-radius: 10px;
  padding: 16px 20px;
  margin-top: 16px;
  text-align: center;
  font-size: 0.95rem;
}

/* ============================================================
   Quota Banner
   ============================================================ */
.quota-banner {
  margin-top: 28px;
}

.quota-banner-inner {
  background: linear-gradient(135deg, #fff8e1, #fff3e0);
  border: 1px solid #ffcc80;
  border-radius: 14px;
  padding: 20px 24px;
  display: flex;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
}

.quota-icon { font-size: 2rem; flex-shrink: 0; }

.quota-banner-inner > div { flex: 1; }

.quota-banner-inner strong { display: block; font-size: 1rem; margin-bottom: 4px; }

.quota-banner-inner p { font-size: 0.9rem; color: #555; }

/* ============================================================
   Login Overlay
   ============================================================ */
.login-overlay {
  position: fixed;
  inset: 0;
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 9999;
}

.login-box {
  background: #fff;
  border-radius: 20px;
  padding: 48px 40px;
  text-align: center;
  box-shadow: 0 20px 60px rgba(0,0,0,0.25);
  max-width: 380px;
  width: calc(100% - 40px);
}

.login-logo { font-size: 3rem; margin-bottom: 16px; }

.login-box h2 {
  font-size: 1.6rem;
  font-weight: 800;
  color: #1a1a2e;
  margin-bottom: 8px;
}

.login-box p {
  color: #666;
  font-size: 0.95rem;
  margin-bottom: 28px;
  line-height: 1.5;
}

.g_id_signin { display: flex; justify-content: center; margin-bottom: 16px; }

.login-guest-hint {
  font-size: 0.85rem !important;
  color: #aaa !important;
  margin-bottom: 0 !important;
}

.login-guest-hint a { color: #4f6ef7; }

/* ============================================================
   Modal (shared)
   ============================================================ */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.45);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 9998;
  padding: 20px;
}

.modal-box {
  background: #fff;
  border-radius: 20px;
  padding: 44px 36px;
  text-align: center;
  box-shadow: 0 24px 80px rgba(0,0,0,0.2);
  max-width: 420px;
  width: 100%;
}

.modal-icon { font-size: 2.8rem; margin-bottom: 16px; }

.modal-box h2 {
  font-size: 1.5rem;
  font-weight: 800;
  margin-bottom: 10px;
}

.modal-box p {
  color: #555;
  font-size: 0.95rem;
  margin-bottom: 12px;
  line-height: 1.55;
}

/* ============================================================
   FAQ
   ============================================================ */
.faq {
  margin-top: 64px;
}

.faq h2 {
  font-size: 1.5rem;
  font-weight: 800;
  margin-bottom: 24px;
  text-align: center;
}

.faq-list {
  max-width: 680px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.faq-item {
  background: #fff;
  border: 1px solid #e8ecf4;
  border-radius: 12px;
  overflow: hidden;
}

.faq-item summary {
  padding: 16px 20px;
  font-size: 0.95rem;
  font-weight: 600;
  cursor: pointer;
  list-style: none;
  display: flex;
  justify-content: space-between;
  align-items: center;
  user-select: none;
}

.faq-item summary::after {
  content: '+';
  font-size: 1.2rem;
  color: #4f6ef7;
  transition: transform 0.2s;
}

.faq-item[open] summary::after {
  content: '−';
}

.faq-item p {
  padding: 0 20px 18px;
  font-size: 0.9rem;
  color: #555;
  line-height: 1.6;
}

/* ============================================================
   Footer
   ============================================================ */
.footer {
  margin-top: 60px;
  text-align: center;
  font-size: 0.85rem;
  color: #aaa;
  padding-bottom: 24px;
}

.footer a { color: #4f6ef7; }

/* ============================================================
   ===== PRICING PAGE =====
   ============================================================ */
body.pricing-page {
  background: #f5f7fa;
  padding: 0;
}

.pricing-nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 20px 40px;
  background: #fff;
  border-bottom: 1px solid #e8ecf4;
}

.pricing-hero {
  text-align: center;
  padding: 64px 20px 40px;
}

.pricing-hero h1 {
  font-size: clamp(1.8rem, 4vw, 2.8rem);
  font-weight: 800;
  letter-spacing: -0.03em;
  margin-bottom: 12px;
}

.pricing-subtitle {
  color: #666;
  font-size: 1.05rem;
  margin-bottom: 32px;
}

/* Toggle */
.pricing-toggle {
  display: inline-flex;
  background: #f0f0f0;
  border-radius: 30px;
  padding: 4px;
  gap: 4px;
}

.toggle-btn {
  padding: 8px 20px;
  border-radius: 26px;
  border: none;
  background: transparent;
  font-size: 0.9rem;
  font-weight: 600;
  color: #666;
  cursor: pointer;
  transition: all 0.2s;
  position: relative;
  white-space: nowrap;
}

.toggle-btn.active {
  background: #fff;
  color: #1a1a2e;
  box-shadow: 0 2px 8px rgba(0,0,0,0.1);
}

.save-tag {
  background: #4caf50;
  color: #fff;
  font-size: 0.68rem;
  font-weight: 700;
  padding: 2px 7px;
  border-radius: 10px;
  margin-left: 6px;
  vertical-align: middle;
}

/* Pricing Cards */
.pricing-cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  max-width: 1000px;
  margin: 0 auto;
  padding: 0 24px 40px;
}

@media (max-width: 780px) {
  .pricing-cards { grid-template-columns: 1fr; max-width: 420px; }
}

.pricing-card {
  background: #fff;
  border: 2px solid #e8ecf4;
  border-radius: 20px;
  padding: 32px 28px;
  position: relative;
  transition: box-shadow 0.2s, border-color 0.2s;
}

.pricing-card:hover {
  box-shadow: 0 8px 32px rgba(79,110,247,0.12);
  border-color: #b0c0fa;
}

.pricing-card.popular {
  border-color: #4f6ef7;
  box-shadow: 0 8px 32px rgba(79,110,247,0.15);
}

.popular-badge,
.best-value-badge {
  position: absolute;
  top: -14px;
  left: 50%;
  transform: translateX(-50%);
  padding: 4px 16px;
  border-radius: 20px;
  font-size: 0.75rem;
  font-weight: 800;
  letter-spacing: 0.03em;
  white-space: nowrap;
}

.popular-badge {
  background: #4f6ef7;
  color: #fff;
}

.best-value-badge {
  background: #ff6b35;
  color: #fff;
}

.plan-name {
  font-size: 1rem;
  font-weight: 700;
  color: #888;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin-bottom: 12px;
}

.plan-price {
  font-size: 2.6rem;
  font-weight: 900;
  color: #1a1a2e;
  letter-spacing: -0.04em;
  line-height: 1;
  margin-bottom: 6px;
}

.plan-mo {
  font-size: 1rem;
  font-weight: 600;
  color: #888;
}

.plan-per {
  font-size: 0.85rem;
  color: #888;
  margin-bottom: 24px;
}

.plan-features {
  list-style: none;
  margin-bottom: 28px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.plan-features li {
  font-size: 0.9rem;
  color: #444;
  line-height: 1.4;
}

.plan-features li.feature-dim {
  color: #bbb;
}

.btn-plan {
  width: 100%;
  padding: 13px;
  border-radius: 10px;
  border: 2px solid #4f6ef7;
  background: #fff;
  color: #4f6ef7;
  font-size: 0.95rem;
  font-weight: 700;
  cursor: pointer;
  transition: all 0.2s;
}

.btn-plan:hover {
  background: #f0f3ff;
}

.btn-plan-popular {
  background: #4f6ef7;
  color: #fff;
}

.btn-plan-popular:hover {
  background: #3a57e8;
  border-color: #3a57e8;
}

/* Trust strip */
.trust-strip {
  display: flex;
  justify-content: center;
  gap: 32px;
  flex-wrap: wrap;
  padding: 20px 24px;
  font-size: 0.85rem;
  color: #888;
}

/* Pricing FAQ */
.pricing-faq {
  padding: 0 24px;
  max-width: 780px;
  margin: 32px auto 0;
}

/* Payment modal specifics */
.payment-modal .payment-desc {
  color: #666;
  margin-bottom: 16px;
}

.payment-perks {
  list-style: none;
  text-align: left;
  background: #f8faff;
  border-radius: 10px;
  padding: 16px 20px;
  margin-bottom: 24px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.payment-perks li {
  font-size: 0.9rem;
  color: #444;
}

.notify-form {
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin-bottom: 12px;
}

.notify-form input {
  width: 100%;
  padding: 12px 16px;
  border: 1px solid #c0c8d8;
  border-radius: 8px;
  font-size: 0.95rem;
  outline: none;
  transition: border-color 0.2s;
}

.notify-form input:focus {
  border-color: #4f6ef7;
}

.notify-form .btn-primary {
  width: 100%;
  text-align: center;
}

.btn-close-modal {
  background: none;
  border: none;
  color: #aaa;
  font-size: 0.9rem;
  cursor: pointer;
  padding: 4px;
}

.btn-close-modal:hover { color: #555; }