/* ==========================================================================
   LearnSpeak English - Modern Web Stylesheet
   Designed for LearnSpeak English / Accenox
   ========================================================================== */

:root {
  --primary: #1b5e20;
  --primary-light: #2e7d32;
  --primary-dark: #0f3d13;
  --primary-soft: #edfce5;
  --primary-hover: #15803d;
  --accent: #f59e0b;
  --accent-light: #fef3c7;
  --accent-dark: #b45309;
  --secondary: #0284c7;

  --text-main: #0f172a;
  --text-muted: #475569;
  --text-light: #94a3b8;
  
  --bg-page: #f8fafc;
  --bg-surface: #ffffff;
  --bg-subtle: #f1f5f9;
  
  --border-subtle: #e2e8f0;
  --border-strong: #cbd5e1;
  
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.07), 0 2px 4px -2px rgba(0, 0, 0, 0.05);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.08), 0 4px 6px -4px rgba(0, 0, 0, 0.04);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 8px 10px -6px rgba(0, 0, 0, 0.04);

  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  --radius-full: 9999px;

  --transition-fast: 150ms ease;
  --transition-base: 250ms ease;
  --font-sans: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
}

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

html {
  font-family: var(--font-sans);
  color: var(--text-main);
  background-color: var(--bg-page);
  line-height: 1.6;
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
}

body {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

main {
  flex: 1;
}

a {
  color: var(--primary-light);
  text-decoration: none;
  transition: color var(--transition-fast);
}

a:hover {
  color: var(--primary-dark);
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

.container {
  width: 100%;
  max-width: 1160px;
  margin-left: auto;
  margin-right: auto;
  padding-left: 20px;
  padding-right: 20px;
}

.container-narrow {
  max-width: 820px;
}

/* ==========================================================================
   Navigation Bar
   ========================================================================== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background-color: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border-subtle);
  transition: all var(--transition-base);
}

.nav-wrapper {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
}

.brand-link {
  display: flex;
  align-items: center;
  gap: 12px;
  color: var(--text-main);
  text-decoration: none;
}

.brand-logo {
  width: 44px;
  height: 44px;
  border-radius: 10px;
  object-fit: cover;
  box-shadow: 0 2px 5px rgba(0, 0, 0, 0.1);
}

.brand-text {
  display: flex;
  flex-direction: column;
}

.brand-name {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--primary);
  line-height: 1.2;
}

.brand-tag {
  font-size: 0.72rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.nav-menu {
  display: flex;
  align-items: center;
  gap: 24px;
  list-style: none;
}

.nav-link {
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--text-muted);
  padding: 6px 10px;
  border-radius: var(--radius-sm);
  transition: all var(--transition-fast);
}

.nav-link:hover {
  color: var(--primary);
  background-color: var(--primary-soft);
}

.nav-link.active {
  color: var(--primary);
  font-weight: 600;
  background-color: var(--primary-soft);
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: 12px;
}

.mobile-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
  color: var(--text-main);
}

/* ==========================================================================
   Buttons & Badges
   ========================================================================== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 10px 20px;
  font-size: 0.95rem;
  font-weight: 600;
  border-radius: var(--radius-full);
  border: 1px solid transparent;
  cursor: pointer;
  text-decoration: none;
  transition: all var(--transition-fast);
}

.btn-primary {
  background-color: var(--primary);
  color: #ffffff;
  box-shadow: 0 4px 10px rgba(27, 94, 32, 0.25);
}

.btn-primary:hover {
  background-color: var(--primary-hover);
  color: #ffffff;
  transform: translateY(-1px);
  box-shadow: 0 6px 14px rgba(27, 94, 32, 0.35);
}

.btn-secondary {
  background-color: var(--bg-surface);
  color: var(--text-main);
  border: 1px solid var(--border-strong);
}

.btn-secondary:hover {
  background-color: var(--bg-subtle);
  color: var(--primary);
  border-color: var(--primary);
}

.btn-danger {
  background-color: #dc2626;
  color: #ffffff;
  box-shadow: 0 4px 10px rgba(220, 38, 38, 0.25);
}

.btn-danger:hover {
  background-color: #b91c1c;
  color: #ffffff;
  transform: translateY(-1px);
  box-shadow: 0 6px 14px rgba(220, 38, 38, 0.35);
}

.btn-lg {
  padding: 13px 26px;
  font-size: 1.05rem;
}

.badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 12px;
  font-size: 0.8rem;
  font-weight: 600;
  border-radius: var(--radius-full);
}

.badge-green {
  background-color: var(--primary-soft);
  color: #166534;
  border: 1px solid #bbf7d0;
}

.badge-amber {
  background-color: var(--accent-light);
  color: var(--accent-dark);
  border: 1px solid #fde68a;
}

.badge-danger {
  background-color: #fee2e2;
  color: #991b1b;
  border: 1px solid #fecaca;
}

/* ==========================================================================
   Hero Section
   ========================================================================== */
.hero-section {
  padding: 60px 0 70px;
  background: linear-gradient(180deg, #f0fdf4 0%, #f8fafc 100%);
  border-bottom: 1px solid var(--border-subtle);
  overflow: hidden;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  align-items: center;
  gap: 48px;
}

.hero-content h1 {
  font-size: 2.85rem;
  font-weight: 800;
  color: #0d3810;
  line-height: 1.15;
  margin: 16px 0 18px;
}

.hero-content h1 span {
  color: var(--primary-light);
}

.hero-lead {
  font-size: 1.15rem;
  color: var(--text-muted);
  line-height: 1.6;
  margin-bottom: 30px;
}

.hero-buttons {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-bottom: 36px;
}

.play-badge-btn {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  background-color: #000000;
  color: #ffffff;
  padding: 10px 22px;
  border-radius: var(--radius-md);
  text-decoration: none;
  box-shadow: 0 4px 12px rgba(0,0,0,0.15);
  transition: transform var(--transition-fast);
}

.play-badge-btn:hover {
  transform: translateY(-2px);
  color: #ffffff;
}

.play-badge-btn svg {
  width: 26px;
  height: 26px;
  flex-shrink: 0;
}

.play-btn-text {
  display: flex;
  flex-direction: column;
  text-align: left;
}

.play-btn-small {
  font-size: 0.68rem;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  opacity: 0.85;
}

.play-btn-large {
  font-size: 1.05rem;
  font-weight: 700;
  line-height: 1.1;
}

.hero-stats {
  display: flex;
  flex-wrap: wrap;
  gap: 32px;
  padding-top: 24px;
  border-top: 1px solid var(--border-subtle);
}

.stat-item {
  display: flex;
  flex-direction: column;
}

.stat-number {
  font-size: 1.6rem;
  font-weight: 800;
  color: var(--primary);
  line-height: 1.1;
}

.stat-label {
  font-size: 0.82rem;
  color: var(--text-muted);
  margin-top: 2px;
}

.hero-preview {
  position: relative;
  text-align: center;
}

.hero-preview-card {
  background: var(--bg-surface);
  padding: 16px;
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-xl);
  border: 1px solid var(--border-subtle);
  display: inline-block;
  max-width: 380px;
}

.hero-preview-img {
  border-radius: var(--radius-lg);
  width: 100%;
  height: auto;
  box-shadow: var(--shadow-md);
}

/* ==========================================================================
   Features Section
   ========================================================================== */
.section {
  padding: 70px 0;
}

.section-header {
  text-align: center;
  max-width: 680px;
  margin: 0 auto 48px;
}

.section-tag {
  font-size: 0.82rem;
  font-weight: 700;
  text-transform: uppercase;
  color: var(--primary-light);
  letter-spacing: 1px;
  margin-bottom: 8px;
}

.section-title {
  font-size: 2.2rem;
  font-weight: 800;
  color: var(--text-main);
  line-height: 1.25;
  margin-bottom: 14px;
}

.section-subtitle {
  font-size: 1.05rem;
  color: var(--text-muted);
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 28px;
}

.feature-card {
  background-color: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 30px;
  box-shadow: var(--shadow-sm);
  transition: transform var(--transition-fast), box-shadow var(--transition-fast);
}

.feature-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-lg);
  border-color: #bbf7d0;
}

.feature-icon-wrapper {
  width: 52px;
  height: 52px;
  border-radius: var(--radius-md);
  background-color: var(--primary-soft);
  color: var(--primary);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 20px;
  font-size: 1.5rem;
}

.feature-title {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: 10px;
}

.feature-description {
  color: var(--text-muted);
  font-size: 0.95rem;
  line-height: 1.6;
}

/* ==========================================================================
   Step-by-step / How it works
   ========================================================================== */
.steps-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 24px;
  margin-top: 36px;
}

.step-card {
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 28px 24px;
  position: relative;
}

.step-badge {
  display: inline-block;
  background-color: var(--primary);
  color: white;
  width: 32px;
  height: 32px;
  border-radius: 50%;
  font-weight: 700;
  text-align: center;
  line-height: 32px;
  margin-bottom: 16px;
  font-size: 0.95rem;
}

/* ==========================================================================
   App CTA Banner
   ========================================================================== */
.cta-banner {
  background: linear-gradient(135deg, #1b5e20 0%, #2e7d32 60%, #15803d 100%);
  color: #ffffff;
  border-radius: var(--radius-xl);
  padding: 56px 40px;
  text-align: center;
  margin: 50px 0;
  box-shadow: var(--shadow-xl);
}

.cta-banner h2 {
  font-size: 2.2rem;
  font-weight: 800;
  margin-bottom: 14px;
  line-height: 1.2;
}

.cta-banner p {
  font-size: 1.1rem;
  max-width: 600px;
  margin: 0 auto 30px;
  opacity: 0.92;
}

.cta-actions {
  display: flex;
  align-items: center;
  justify-content: center;
  flex-wrap: wrap;
  gap: 16px;
}

/* ==========================================================================
   Card, Form, & Content Pages (Delete Account, Privacy, Terms)
   ========================================================================== */
.page-header {
  padding: 48px 0 32px;
  background-color: #f1f8e9;
  border-bottom: 1px solid var(--border-subtle);
  margin-bottom: 40px;
}

.page-title {
  font-size: 2.3rem;
  font-weight: 800;
  color: var(--primary-dark);
  line-height: 1.2;
  margin-bottom: 8px;
}

.page-subtitle {
  font-size: 1.05rem;
  color: var(--text-muted);
}

.content-card {
  background-color: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 40px;
  box-shadow: var(--shadow-sm);
  margin-bottom: 50px;
}

/* Forms */
.form-group {
  margin-bottom: 22px;
}

.form-label {
  display: block;
  font-size: 0.92rem;
  font-weight: 600;
  color: var(--text-main);
  margin-bottom: 6px;
}

.form-label .required {
  color: #dc2626;
  margin-left: 3px;
}

.form-hint {
  font-size: 0.8rem;
  color: var(--text-muted);
  margin-top: 5px;
}

.form-control {
  width: 100%;
  padding: 12px 14px;
  font-size: 0.95rem;
  font-family: inherit;
  color: var(--text-main);
  background-color: #ffffff;
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-md);
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.form-control:focus {
  outline: none;
  border-color: var(--primary-light);
  box-shadow: 0 0 0 3px rgba(46, 125, 50, 0.18);
}

textarea.form-control {
  resize: vertical;
  min-height: 100px;
}

.checkbox-group {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  margin: 26px 0;
  padding: 16px;
  background-color: #fef2f2;
  border-radius: var(--radius-md);
  border: 1px solid #fecaca;
}

.checkbox-group input[type="checkbox"] {
  width: 18px;
  height: 18px;
  margin-top: 3px;
  accent-color: #dc2626;
  flex-shrink: 0;
  cursor: pointer;
}

.checkbox-label {
  font-size: 0.88rem;
  color: #991b1b;
  line-height: 1.5;
  cursor: pointer;
}

/* Alert Boxes */
.alert {
  padding: 16px 20px;
  border-radius: var(--radius-md);
  margin-bottom: 24px;
  display: flex;
  align-items: flex-start;
  gap: 12px;
  font-size: 0.95rem;
}

.alert-danger {
  background-color: #fef2f2;
  color: #991b1b;
  border: 1px solid #fecaca;
}

.alert-success {
  background-color: #f0fdf4;
  color: #166534;
  border: 1px solid #bbf7d0;
}

.alert-info {
  background-color: #eff6ff;
  color: #1e40af;
  border: 1px solid #bfdbfe;
}

.alert-warning {
  background-color: #fffbeb;
  color: #92400e;
  border: 1px solid #fde68a;
}

/* Notice Card */
.notice-card {
  background-color: #fffbeb;
  border-left: 4px solid var(--accent);
  border-radius: var(--radius-md);
  padding: 20px;
  margin-bottom: 28px;
}

.notice-title {
  font-size: 1rem;
  font-weight: 700;
  color: var(--accent-dark);
  margin-bottom: 6px;
}

.notice-body {
  font-size: 0.9rem;
  color: #78350f;
  line-height: 1.5;
}

.notice-card ul {
  padding-left: 20px;
  margin-top: 8px;
}

.notice-card li {
  margin-bottom: 4px;
}

/* Legal text styling */
.legal-content h2 {
  font-size: 1.45rem;
  color: var(--primary-dark);
  margin: 32px 0 12px;
  border-bottom: 2px solid var(--primary-soft);
  padding-bottom: 6px;
}

.legal-content h3 {
  font-size: 1.15rem;
  color: var(--text-main);
  margin: 22px 0 10px;
}

.legal-content p, .legal-content ul, .legal-content ol {
  font-size: 0.97rem;
  color: var(--text-muted);
  line-height: 1.7;
  margin-bottom: 16px;
}

.legal-content ul, .legal-content ol {
  padding-left: 26px;
}

.legal-content li {
  margin-bottom: 8px;
}

.meta-box {
  background-color: var(--primary-soft);
  border: 1px solid #bbf7d0;
  border-radius: var(--radius-md);
  padding: 16px 20px;
  margin-bottom: 28px;
  font-size: 0.92rem;
}

.meta-box p {
  margin-bottom: 6px;
  color: #14532d;
}

.meta-box strong {
  color: #0f3d13;
}

/* Deletion Status Card */
.status-card {
  text-align: center;
  padding: 40px 24px;
}

.status-icon {
  width: 72px;
  height: 72px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 20px;
  font-size: 2rem;
}

.status-icon.success {
  background-color: #dcfce7;
  color: #166534;
}

.status-icon.pending {
  background-color: #fef3c7;
  color: #b45309;
}

.status-icon.info {
  background-color: #e0f2fe;
  color: #0369a1;
}

.status-pill {
  display: inline-block;
  padding: 6px 16px;
  font-size: 0.85rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  border-radius: var(--radius-full);
  margin: 12px 0 20px;
}

.status-pill.completed {
  background-color: #dcfce7;
  color: #15803d;
}

.status-pill.pending {
  background-color: #fef3c7;
  color: #b45309;
}

.details-table {
  width: 100%;
  max-width: 540px;
  margin: 24px auto;
  border-collapse: collapse;
  text-align: left;
}

.details-table th, .details-table td {
  padding: 12px 16px;
  border-bottom: 1px solid var(--border-subtle);
  font-size: 0.92rem;
}

.details-table th {
  color: var(--text-muted);
  width: 40%;
  font-weight: 500;
}

.details-table td {
  color: var(--text-main);
  font-weight: 600;
}

/* FAQ Accordion */
.faq-list {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.faq-item {
  background-color: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: border-color var(--transition-fast);
}

.faq-item:hover {
  border-color: #bbf7d0;
}

.faq-question {
  width: 100%;
  text-align: left;
  padding: 18px 20px;
  background: none;
  border: none;
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--text-main);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.faq-question svg {
  width: 20px;
  height: 20px;
  transition: transform var(--transition-fast);
}

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

.faq-answer {
  display: none;
  padding: 0 20px 20px;
  color: var(--text-muted);
  font-size: 0.95rem;
  line-height: 1.6;
}

.faq-item.open .faq-answer {
  display: block;
}

/* ==========================================================================
   Footer
   ========================================================================== */
.site-footer {
  background-color: #0d1e11;
  color: #cbd5e1;
  padding: 60px 0 30px;
  margin-top: auto;
  border-top: 1px solid #1c3d23;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1.2fr;
  gap: 40px;
  margin-bottom: 40px;
}

.footer-brand .brand-name {
  color: #ffffff;
}

.footer-brand .brand-tag {
  color: #86efac;
}

.footer-desc {
  font-size: 0.88rem;
  color: #94a3b8;
  margin: 16px 0 20px;
  line-height: 1.6;
}

.footer-heading {
  font-size: 0.95rem;
  font-weight: 700;
  color: #ffffff;
  margin-bottom: 16px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.footer-links {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.footer-links a {
  font-size: 0.9rem;
  color: #94a3b8;
  transition: color var(--transition-fast);
}

.footer-links a:hover {
  color: #ffffff;
  padding-left: 2px;
}

.footer-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 24px;
  border-top: 1px solid #1c3d23;
  font-size: 0.82rem;
  color: #64748b;
  flex-wrap: wrap;
  gap: 12px;
}

.footer-bottom a {
  color: #94a3b8;
}

.footer-bottom a:hover {
  color: #ffffff;
}

/* ==========================================================================
   Responsive Media Queries
   ========================================================================== */
@media (max-width: 900px) {
  .hero-grid {
    grid-template-columns: 1fr;
    text-align: center;
  }

  .hero-buttons {
    justify-content: center;
  }

  .hero-stats {
    justify-content: center;
  }

  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: 30px;
  }
}

@media (max-width: 768px) {
  .nav-menu {
    display: none;
    position: absolute;
    top: 72px;
    left: 0;
    right: 0;
    background-color: var(--bg-surface);
    flex-direction: column;
    padding: 20px;
    box-shadow: var(--shadow-lg);
    border-bottom: 1px solid var(--border-subtle);
    gap: 12px;
  }

  .nav-menu.open {
    display: flex;
  }

  .mobile-toggle {
    display: block;
  }

  .hero-content h1 {
    font-size: 2.2rem;
  }

  .section-title {
    font-size: 1.8rem;
  }

  .content-card {
    padding: 24px;
  }

  .footer-grid {
    grid-template-columns: 1fr;
    gap: 26px;
  }

  .footer-bottom {
    flex-direction: column;
    text-align: center;
  }
}