/* ==========================================================================
   QuickReel — Modern, Clean & Professional Stylesheet
   ========================================================================== */

:root {
  /* Color Palette */
  --color-primary: #1f4fff;
  --color-primary-hover: #173ecc;
  --color-primary-light: #eef2ff;
  --color-primary-glow: rgba(31, 79, 255, 0.18);

  --color-bg: #ffffff;
  --color-bg-secondary: #f8fafc;
  --color-bg-tertiary: #f1f5f9;

  --color-text-main: #0a192f;
  --color-text-muted: #475569;
  --color-text-subtle: #64748b;
  --color-text-inverse: #ffffff;

  --color-border: #e2e8f0;
  --color-border-hover: #cbd5e1;

  --color-success: #10b981;
  --color-success-bg: #ecfdf5;

  /* Typography */
  --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;

  /* Radius & Shadows */
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  --radius-full: 9999px;

  --shadow-sm: 0 1px 2px 0 rgba(10, 25, 47, 0.05);
  --shadow-md: 0 4px 12px -2px rgba(10, 25, 47, 0.08), 0 2px 6px -1px rgba(10, 25, 47, 0.04);
  --shadow-lg: 0 12px 32px -4px rgba(10, 25, 47, 0.1), 0 4px 12px -2px rgba(10, 25, 47, 0.05);
  --shadow-primary: 0 8px 24px -4px rgba(31, 79, 255, 0.35);

  /* Transitions */
  --transition-fast: 0.15s ease;
  --transition-base: 0.25s cubic-bezier(0.16, 1, 0.3, 1);
}

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

html {
  font-size: 16px;
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-family);
  background-color: var(--color-bg);
  color: var(--color-text-main);
  line-height: 1.6;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

main {
  flex: 1;
}

/* Layout Container */
.container {
  width: 100%;
  max-width: 1140px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

.max-w-narrow {
  max-width: 760px;
}

/* ==========================================================================
   Header & Navigation
   ========================================================================== */

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background-color: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--color-border);
  transition: all var(--transition-fast);
}

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

.brand-logo {
  display: inline-flex;
  align-items: center;
  gap: 0.65rem;
  font-size: 1.35rem;
  font-weight: 800;
  color: var(--color-text-main);
  text-decoration: none;
  letter-spacing: -0.025em;
  transition: opacity var(--transition-fast);
}

.brand-logo:hover {
  opacity: 0.9;
}

.brand-icon,
.brand-mark {
  width: 36px;
  height: 36px;
  display: block;
  flex-shrink: 0;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 1.75rem;
}

.nav-link {
  color: var(--color-text-muted);
  font-size: 0.95rem;
  font-weight: 500;
  text-decoration: none;
  transition: color var(--transition-fast);
  position: relative;
  padding: 0.25rem 0;
}

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

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

/* ==========================================================================
   Hero Section & Paste Box
   ========================================================================== */

.hero-section {
  padding: 4.5rem 0 3.5rem;
  background: radial-gradient(circle at 50% 0%, #f4f7ff 0%, #ffffff 70%);
  text-align: center;
}

.hero-inner {
  display: flex;
  flex-direction: column;
  align-items: center;
}

.hero-title {
  font-size: 3rem;
  font-weight: 800;
  letter-spacing: -0.035em;
  line-height: 1.15;
  color: var(--color-text-main);
  margin-bottom: 1rem;
}

.hero-subtitle {
  font-size: 1.15rem;
  color: var(--color-text-muted);
  max-width: 640px;
  margin: 0 auto 2.25rem;
  line-height: 1.5;
}

/* Tab Switcher */
.tab-list {
  display: inline-flex;
  background-color: var(--color-bg-secondary);
  border: 1px solid var(--color-border);
  padding: 4px;
  border-radius: var(--radius-full);
  margin-bottom: 1.5rem;
}

.tab-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: transparent;
  border: none;
  outline: none;
  padding: 0.55rem 1.4rem;
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--color-text-muted);
  border-radius: var(--radius-full);
  cursor: pointer;
  text-decoration: none;
  transition: all var(--transition-fast);
  font-family: inherit;
  white-space: nowrap;
}

.tab-btn:hover {
  color: var(--color-text-main);
}

.tab-btn.active {
  background-color: #ffffff;
  color: var(--color-primary);
  box-shadow: 0 2px 6px rgba(0, 0, 0, 0.08);
}

/* Download Card & Paste Box */
.download-card {
  width: 100%;
  max-width: 720px;
}

.paste-box {
  background-color: #ffffff;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: 0.65rem 0.65rem 0.65rem 1.25rem;
  box-shadow: var(--shadow-lg);
  display: flex;
  align-items: center;
  gap: 0.75rem;
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.paste-box:focus-within {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 4px var(--color-primary-glow), var(--shadow-md);
}

.input-wrapper {
  display: flex;
  align-items: center;
  flex: 1;
  gap: 0.75rem;
  min-width: 0;
}

.link-icon {
  width: 20px;
  height: 20px;
  color: var(--color-text-subtle);
  flex-shrink: 0;
}

.media-input {
  flex: 1;
  border: none;
  outline: none;
  font-size: 1.05rem;
  color: var(--color-text-main);
  background: transparent;
  font-family: inherit;
  min-width: 0;
}

.media-input::placeholder {
  color: #94a3b8;
}

.btn-paste {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  background-color: var(--color-bg-secondary);
  border: 1px solid var(--color-border);
  color: var(--color-text-muted);
  padding: 0.5rem 0.9rem;
  border-radius: var(--radius-md);
  font-size: 0.875rem;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition-fast);
  white-space: nowrap;
  font-family: inherit;
}

.btn-paste:hover {
  background-color: var(--color-bg-tertiary);
  color: var(--color-text-main);
  border-color: var(--color-border-hover);
}

.btn-paste:active {
  transform: scale(0.97);
}

.btn-primary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  background-color: var(--color-primary);
  color: var(--color-text-inverse);
  border: none;
  padding: 0.85rem 1.6rem;
  border-radius: var(--radius-lg);
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  transition: background-color var(--transition-fast), transform var(--transition-fast), box-shadow var(--transition-fast);
  box-shadow: var(--shadow-primary);
  white-space: nowrap;
  font-family: inherit;
}

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

.btn-primary:active {
  transform: translateY(0);
}

/* ==========================================================================
   Media Resolution Results & Feedback
   ========================================================================== */

.result-container {
  width: 100%;
  margin-top: 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.status-msg {
  padding: 0.85rem 1.25rem;
  border-radius: var(--radius-md);
  font-size: 0.95rem;
  font-weight: 500;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.65rem;
  animation: fadeIn 0.25s ease forwards;
}

.status-msg-loading {
  background-color: #eff6ff;
  border: 1px solid #bfdbfe;
  color: #1e40af;
}

.status-msg-error {
  background-color: #fef2f2;
  border: 1px solid #fecaca;
  color: #dc2626;
  text-align: center;
}

.spinner {
  width: 18px;
  height: 18px;
  border: 2px solid #bfdbfe;
  border-top-color: #1f4fff;
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
  flex-shrink: 0;
}

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

.result-card {
  background-color: #ffffff;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 1.5rem;
  box-shadow: var(--shadow-md);
  text-align: left;
  display: flex;
  gap: 1.5rem;
  animation: fadeIn 0.3s ease forwards;
}

.result-thumb-wrapper {
  flex-shrink: 0;
  width: 130px;
  height: 170px;
  border-radius: var(--radius-md);
  overflow: hidden;
  background-color: var(--color-bg-secondary);
  border: 1px solid var(--color-border);
}

.result-thumb-wrapper img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.result-details {
  display: flex;
  flex-direction: column;
  flex: 1;
  min-width: 0;
}

.result-author {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  font-weight: 700;
  font-size: 1.05rem;
  color: var(--color-text-main);
  margin-bottom: 0.35rem;
}

.result-caption {
  font-size: 0.9rem;
  color: var(--color-text-muted);
  line-height: 1.45;
  margin-bottom: 1.25rem;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
  text-overflow: ellipsis;
}

.result-items-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: auto;
}

.btn-download {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background-color: var(--color-primary);
  color: #ffffff;
  text-decoration: none;
  font-size: 0.95rem;
  font-weight: 600;
  padding: 0.7rem 1.25rem;
  border-radius: var(--radius-md);
  box-shadow: 0 4px 12px rgba(31, 79, 255, 0.25);
  transition: all var(--transition-fast);
}

.btn-download:hover {
  background-color: var(--color-primary-hover);
  transform: translateY(-1px);
  box-shadow: 0 6px 16px rgba(31, 79, 255, 0.35);
}

.btn-download svg {
  width: 18px;
  height: 18px;
}

@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(-6px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* Pill Chips */
.pill-chips {
  display: flex;
  align-items: center;
  justify-content: center;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: 1.5rem;
}

.chip {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  background-color: var(--color-bg-secondary);
  border: 1px solid var(--color-border);
  color: var(--color-text-muted);
  font-size: 0.85rem;
  font-weight: 500;
  padding: 0.35rem 0.85rem;
  border-radius: var(--radius-full);
  user-select: none;
}

.chip svg {
  width: 14px;
  height: 14px;
  color: var(--color-primary);
}

/* ==========================================================================
   Shared Section Styling
   ========================================================================== */

.section {
  padding: 4.5rem 0;
}

.section-header {
  text-align: center;
  margin-bottom: 3rem;
}

.section-title {
  font-size: 2.15rem;
  font-weight: 700;
  letter-spacing: -0.025em;
  color: var(--color-text-main);
  margin-bottom: 0.5rem;
}

.section-subtitle {
  font-size: 1.05rem;
  color: var(--color-text-subtle);
  max-width: 580px;
  margin: 0 auto;
}

/* ==========================================================================
   "How to download" Section
   ========================================================================== */

.steps-section {
  background-color: var(--color-bg-secondary);
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
}

.steps-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
}

.step-card {
  background: #ffffff;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 2rem 1.75rem;
  display: flex;
  flex-direction: column;
  box-shadow: var(--shadow-sm);
  transition: transform var(--transition-base), box-shadow var(--transition-base);
}

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

.step-badge {
  width: 44px;
  height: 44px;
  border-radius: var(--radius-md);
  background-color: var(--color-primary);
  color: #ffffff;
  font-size: 1.25rem;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1.25rem;
  box-shadow: 0 4px 10px rgba(31, 79, 255, 0.25);
}

.step-title {
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--color-text-main);
  margin-bottom: 0.65rem;
}

.step-desc {
  font-size: 0.95rem;
  color: var(--color-text-muted);
  line-height: 1.55;
}

/* ==========================================================================
   Features Section
   ========================================================================== */

.features-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.5rem;
}

.feature-card {
  background-color: #ffffff;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 2rem 1.5rem;
  box-shadow: var(--shadow-sm);
  transition: transform var(--transition-base), box-shadow var(--transition-base);
}

.feature-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
  border-color: var(--color-border-hover);
}

.feature-icon-wrapper {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-md);
  background-color: var(--color-primary-light);
  color: var(--color-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1.25rem;
}

.feature-icon-wrapper svg {
  width: 24px;
  height: 24px;
}

.feature-title {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--color-text-main);
  margin-bottom: 0.5rem;
}

.feature-desc {
  font-size: 0.9rem;
  color: var(--color-text-muted);
  line-height: 1.5;
}

/* ==========================================================================
   Informational / SEO Content Sections
   ========================================================================== */

.info-section {
  padding: 4rem 0;
  background-color: #ffffff;
  border-top: 1px solid var(--color-border);
}

.info-card {
  background-color: var(--color-bg-secondary);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 2.25rem 2.25rem;
  margin-bottom: 2rem;
  box-shadow: var(--shadow-sm);
}

.info-card:last-child {
  margin-bottom: 0;
}

.info-title {
  font-size: 1.5rem;
  font-weight: 700;
  letter-spacing: -0.025em;
  color: var(--color-text-main);
  margin-bottom: 1rem;
}

.info-text {
  font-size: 1rem;
  color: var(--color-text-muted);
  line-height: 1.7;
  margin-bottom: 1rem;
}

.info-text:last-child {
  margin-bottom: 0;
}

/* ==========================================================================
   FAQ Section
   ========================================================================== */

.faq-section {
  background-color: var(--color-bg-secondary);
  border-top: 1px solid var(--color-border);
}

.faq-list {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.faq-item {
  background-color: #ffffff;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.faq-item[open] {
  border-color: #cbd5e1;
  box-shadow: var(--shadow-sm);
}

.faq-question {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1.25rem 1.5rem;
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--color-text-main);
  cursor: pointer;
  list-style: none;
  user-select: none;
  transition: background-color var(--transition-fast);
}

.faq-question::-webkit-details-marker {
  display: none;
}

.faq-question:hover {
  background-color: #fafbfd;
}

.chevron-icon {
  width: 20px;
  height: 20px;
  color: var(--color-text-subtle);
  transition: transform var(--transition-fast);
  flex-shrink: 0;
}

.faq-item[open] .chevron-icon {
  transform: rotate(180deg);
  color: var(--color-primary);
}

.faq-answer {
  padding: 0 1.5rem 1.25rem 1.5rem;
  color: var(--color-text-muted);
  font-size: 0.95rem;
  line-height: 1.6;
}

/* ==========================================================================
   Footer
   ========================================================================== */

.site-footer {
  background-color: #ffffff;
  border-top: 1px solid var(--color-border);
  padding: 3rem 0;
}

.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 2rem;
  flex-wrap: wrap;
}

.footer-brand {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.footer-logo {
  font-size: 1.2rem;
}

.copyright {
  font-size: 0.85rem;
  color: var(--color-text-subtle);
}

.footer-links {
  display: flex;
  align-items: center;
  gap: 1.75rem;
}

.footer-link {
  font-size: 0.9rem;
  color: var(--color-text-muted);
  text-decoration: none;
  font-weight: 500;
  transition: color var(--transition-fast);
}

.footer-link:hover {
  color: var(--color-primary);
}

/* ==========================================================================
   Responsive Design
   ========================================================================== */

@media (max-width: 992px) {
  .hero-title {
    font-size: 2.4rem;
  }

  .steps-grid {
    grid-template-columns: 1fr;
    gap: 1.25rem;
  }

  .features-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 1.25rem;
  }
}

@media (max-width: 640px) {
  .header-inner {
    height: 64px;
  }

  .nav-links {
    gap: 1rem;
  }

  .nav-link {
    font-size: 0.875rem;
  }

  .hero-section {
    padding: 3rem 0 2.5rem;
  }

  .hero-title {
    font-size: 2rem;
  }

  .hero-subtitle {
    font-size: 1rem;
    margin-bottom: 1.75rem;
  }

  .paste-box {
    flex-direction: column;
    padding: 0.75rem;
    border-radius: var(--radius-lg);
  }

  .input-wrapper {
    width: 100%;
    padding: 0.25rem 0.5rem;
  }

  .media-input {
    font-size: 0.95rem;
  }

  .btn-primary {
    width: 100%;
    padding: 0.8rem 1rem;
  }

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

  .info-card {
    padding: 1.75rem 1.25rem;
  }

  .info-title {
    font-size: 1.3rem;
  }

  .footer-inner {
    flex-direction: column;
    align-items: flex-start;
    gap: 1.5rem;
  }

  .footer-links {
    gap: 1.25rem;
    flex-wrap: wrap;
  }
}

/* ==========================================================================
   Content & Legal Pages (About, FAQ, Privacy, Terms, Takedown)
   ========================================================================== */

.content-section {
  padding: 4rem 0 5rem;
  background-color: var(--color-bg-secondary);
}

.content-card {
  background-color: #ffffff;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 3rem 2.5rem;
  box-shadow: var(--shadow-sm);
}

.content-card h1 {
  font-size: 2.25rem;
  font-weight: 800;
  letter-spacing: -0.03em;
  color: var(--color-text-main);
  margin-bottom: 0.75rem;
}

.content-card .page-lead {
  font-size: 1.15rem;
  color: var(--color-text-muted);
  margin-bottom: 2.25rem;
  padding-bottom: 1.5rem;
  border-bottom: 1px solid var(--color-border);
  line-height: 1.6;
}

.content-body h2 {
  font-size: 1.35rem;
  font-weight: 700;
  color: var(--color-text-main);
  margin-top: 2rem;
  margin-bottom: 0.75rem;
}

.content-body p {
  color: var(--color-text-muted);
  font-size: 1rem;
  line-height: 1.7;
  margin-bottom: 1.25rem;
}

.content-body ul {
  margin: 1rem 0 1.5rem 1.5rem;
  color: var(--color-text-muted);
}

.content-body li {
  margin-bottom: 0.5rem;
  line-height: 1.6;
}

.notice-box {
  background-color: #eff6ff;
  border-left: 4px solid var(--color-primary);
  padding: 1.25rem 1.5rem;
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
  margin: 1.75rem 0;
  color: #1e3a8a;
  font-size: 0.95rem;
  line-height: 1.6;
}

.contact-email-box {
  display: inline-flex;
  align-items: center;
  gap: 0.75rem;
  background-color: var(--color-bg-secondary);
  border: 1px solid var(--color-border);
  padding: 0.85rem 1.5rem;
  border-radius: var(--radius-md);
  margin: 1.25rem 0;
  font-weight: 600;
  color: var(--color-primary);
  text-decoration: none;
}

.contact-email-box:hover {
  background-color: var(--color-bg-tertiary);
  border-color: var(--color-border-hover);
}

@media (max-width: 640px) {
  .content-card {
    padding: 2rem 1.25rem;
  }

  .content-card h1 {
    font-size: 1.75rem;
  }
}