/* ==========================================================================
   TikTok Video Downloader Without Watermark - Official Brand Styling
   Clean, Minimal, Modern Layout with Authentic TikTok Black & Brand Accents
   ========================================================================== */

:root {
  /* Official TikTok Brand Colors */
  --tt-black: #010101;
  --tt-black-card: #121212;
  --tt-black-surface: #181818;
  --tt-border-dark: #262626;
  
  --tt-cyan: #00F2FE;
  --tt-cyan-subtle: rgba(0, 242, 254, 0.12);
  --tt-cyan-border: rgba(0, 242, 254, 0.28);
  
  --tt-pink: #FE2C55;
  --tt-pink-hover: #E0264A;
  --tt-pink-subtle: rgba(254, 44, 85, 0.12);
  --tt-pink-border: rgba(254, 44, 85, 0.28);

  /* Neutrals */
  --color-white: #FFFFFF;
  --color-black: #010101;
  --color-gray-dark: #161823;
  --color-gray-mid: #73747B;
  --color-gray-light: #F1F1F2;
  --color-border: #E3E5E8;
  --color-border-light: #EFEFEF;
  
  /* Status Colors */
  --color-error-bg: #FFEBE9;
  --color-error-border: #FA755A;
  --color-error-text: #C32A2A;

  --font-main: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
  
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 20px;
  --radius-pill: 9999px;
  
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.08);
  --shadow-md: 0 8px 24px rgba(0, 0, 0, 0.2);
  --shadow-lg: 0 16px 40px rgba(0, 0, 0, 0.35);
}

*, *::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-main);
  background-color: var(--color-white);
  color: var(--color-black);
  line-height: 1.5;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* ==========================================================================
   1. Minimal Header: ONLY the Official TikTok Logo
   ========================================================================== */
.header {
  background: var(--tt-black);
  width: 100%;
  padding: 24px 20px 14px 20px;
  display: flex;
  justify-content: center;
  align-items: center;
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}

.header-inner {
  display: flex;
  justify-content: center;
  align-items: center;
}

.logo-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  text-decoration: none;
  transition: transform 0.2s cubic-bezier(0.34, 1.56, 0.64, 1), filter 0.2s ease;
}

.logo-link:hover {
  transform: scale(1.05);
  filter: drop-shadow(0 2px 10px rgba(0, 242, 254, 0.35)) drop-shadow(0 2px 12px rgba(254, 44, 85, 0.35));
}

.tiktok-header-logo {
  width: 145px;
  height: 42px;
  display: block;
}

/* ==========================================================================
   2. Hero Section: TikTok Black Background
   ========================================================================== */
.hero-section {
  background: var(--tt-black);
  padding: 18px 20px 76px 20px;
  width: 100%;
  position: relative;
}

.hero-container {
  max-width: 680px;
  margin: 0 auto;
  text-align: center;
}

.hero-title {
  font-size: 2.35rem;
  font-weight: 800;
  line-height: 1.18;
  letter-spacing: -0.025em;
  color: #FFFFFF;
  margin-bottom: 12px;
}

.hero-subtitle {
  font-size: 1.125rem;
  font-weight: 500;
  color: rgba(255, 255, 255, 0.85);
  margin-bottom: 34px;
  letter-spacing: -0.01em;
}

/* URL Input & Download Form */
.downloader-form {
  display: flex;
  flex-direction: row;
  align-items: center;
  gap: 12px;
  background: #FFFFFF;
  padding: 8px 8px 8px 18px;
  border-radius: var(--radius-pill);
  box-shadow: 0 12px 36px rgba(0, 0, 0, 0.45);
  border: 2px solid transparent;
  transition: transform 0.2s ease, box-shadow 0.2s ease, border-color 0.2s ease;
}

.downloader-form:focus-within {
  transform: translateY(-2px);
  border-color: var(--tt-cyan);
  box-shadow: 0 0 0 3px rgba(0, 242, 254, 0.25), 0 16px 42px rgba(0, 0, 0, 0.5);
}

.input-wrapper {
  display: flex;
  align-items: center;
  flex: 1;
  gap: 10px;
  position: relative;
}

.paste-btn, .clear-btn {
  background: none;
  border: none;
  color: var(--color-gray-mid);
  cursor: pointer;
  padding: 6px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  transition: color 0.15s ease, background-color 0.15s ease;
}

.paste-btn:hover {
  color: var(--tt-pink);
  background-color: rgba(254, 44, 85, 0.08);
}

.clear-btn:hover {
  color: var(--color-black);
  background-color: var(--color-gray-light);
}

.url-input {
  flex: 1;
  border: none;
  outline: none;
  font-family: inherit;
  font-size: 1rem;
  font-weight: 500;
  color: var(--color-black);
  background: transparent;
  min-width: 0;
}

.url-input::placeholder {
  color: #8A8D91;
  font-weight: 400;
}

.download-btn {
  background: var(--tt-pink);
  color: #FFFFFF;
  border: none;
  outline: none;
  font-family: inherit;
  font-size: 1rem;
  font-weight: 700;
  padding: 14px 28px;
  border-radius: var(--radius-pill);
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  transition: all 0.2s ease;
  white-space: nowrap;
  box-shadow: 0 4px 14px rgba(254, 44, 85, 0.4);
}

.download-btn:hover:not(:disabled) {
  background: var(--tt-pink-hover);
  transform: translateY(-1px);
  box-shadow: 0 6px 18px rgba(254, 44, 85, 0.5);
}

.download-btn:active:not(:disabled) {
  transform: translateY(0);
}

.download-btn:disabled {
  opacity: 0.75;
  cursor: not-allowed;
}

/* Spinner */
.spinner {
  width: 20px;
  height: 20px;
  animation: spin 0.85s linear infinite;
}

.spinner-track {
  opacity: 0.25;
}

.spinner-head {
  stroke: #FFFFFF;
}

@keyframes spin {
  from { transform: rotate(0deg); }
  to { transform: rotate(360deg); }
}

/* Feedback: Status & Loading */
.status-container {
  margin-top: 24px;
}

.status-loading {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.14);
  padding: 10px 20px;
  border-radius: var(--radius-pill);
  color: #FFFFFF;
  font-size: 0.938rem;
  font-weight: 500;
  backdrop-filter: blur(8px);
}

.pulse-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background-color: var(--tt-cyan);
  box-shadow: 0 0 10px var(--tt-cyan);
  animation: pulseDot 1.4s infinite cubic-bezier(0.45, 0, 0.55, 1);
}

@keyframes pulseDot {
  0%, 100% {
    transform: scale(0.85);
    opacity: 0.6;
  }
  50% {
    transform: scale(1.3);
    opacity: 1;
  }
}

/* Error Alert */
.error-container {
  margin-top: 24px;
  background: var(--color-error-bg);
  border: 1px solid var(--color-error-border);
  border-radius: var(--radius-md);
  padding: 14px 18px;
  display: flex;
  align-items: flex-start;
  gap: 12px;
  text-align: left;
  animation: fadeIn 0.25s ease;
}

.error-icon {
  color: var(--color-error-text);
  flex-shrink: 0;
  margin-top: 2px;
}

.error-content strong {
  display: block;
  font-size: 0.938rem;
  color: var(--color-error-text);
  margin-bottom: 2px;
}

.error-content p {
  font-size: 0.875rem;
  color: #5A1E1E;
  line-height: 1.4;
}

/* ==========================================================================
   Result Card: Real Video Preview & Download Actions
   ========================================================================== */
.result-container {
  margin-top: 32px;
  animation: fadeIn 0.35s ease;
}

.result-card {
  background: var(--tt-black-card);
  border: 1px solid var(--tt-border-dark);
  border-radius: var(--radius-lg);
  padding: 24px;
  box-shadow: var(--shadow-lg);
  display: grid;
  grid-template-columns: 260px 1fr;
  gap: 24px;
  text-align: left;
  color: #FFFFFF;
}

.result-video-wrapper {
  background: #000000;
  border-radius: var(--radius-md);
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 1px solid rgba(255, 255, 255, 0.08);
  aspect-ratio: 9 / 16;
  max-height: 420px;
}

.video-preview {
  width: 100%;
  height: 100%;
  object-fit: contain;
  background: #000000;
}

.result-details {
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.result-meta-top {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 12px;
}

.badge {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  font-size: 0.75rem;
  font-weight: 700;
  padding: 5px 12px;
  border-radius: var(--radius-pill);
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.watermark-badge {
  background: var(--tt-cyan-subtle);
  color: var(--tt-cyan);
  border: 1px solid var(--tt-cyan-border);
}

.quality-badge {
  background: var(--tt-pink-subtle);
  color: var(--tt-pink);
  border: 1px solid var(--tt-pink-border);
}

.video-title {
  font-size: 1.18rem;
  font-weight: 700;
  line-height: 1.35;
  color: #FFFFFF;
  margin-bottom: 4px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.video-creator {
  font-size: 0.938rem;
  color: rgba(255, 255, 255, 0.65);
  margin-bottom: 16px;
}

/* Quality selector buttons */
.quality-selector-wrapper {
  margin-bottom: 18px;
  background: var(--tt-black-surface);
  border: 1px solid var(--tt-border-dark);
  padding: 12px 14px;
  border-radius: var(--radius-md);
}

.quality-select-label {
  display: block;
  font-size: 0.8125rem;
  font-weight: 600;
  color: rgba(255, 255, 255, 0.65);
  margin-bottom: 8px;
  text-transform: uppercase;
  letter-spacing: 0.03em;
}

.quality-buttons {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.quality-btn {
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.12);
  color: #FFFFFF;
  padding: 6px 14px;
  border-radius: var(--radius-pill);
  font-size: 0.8125rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.15s ease;
  font-family: inherit;
}

.quality-btn:hover {
  background: rgba(255, 255, 255, 0.12);
  border-color: rgba(255, 255, 255, 0.25);
}

.quality-btn.active {
  background: var(--tt-pink);
  border-color: var(--tt-pink);
  color: #FFFFFF;
  box-shadow: 0 2px 8px rgba(254, 44, 85, 0.4);
}

.meta-row {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
  padding: 12px 0;
  border-top: 1px solid var(--tt-border-dark);
  border-bottom: 1px solid var(--tt-border-dark);
  margin-bottom: 20px;
}

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

.meta-label {
  font-size: 0.75rem;
  color: rgba(255, 255, 255, 0.5);
  text-transform: uppercase;
  font-weight: 600;
  letter-spacing: 0.03em;
}

.meta-val {
  font-size: 0.938rem;
  font-weight: 700;
  color: #FFFFFF;
}

.result-actions {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.action-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 20px;
  border-radius: var(--radius-pill);
  font-family: inherit;
  font-size: 0.938rem;
  font-weight: 700;
  text-decoration: none;
  cursor: pointer;
  transition: all 0.2s ease;
  border: none;
}

.download-action-btn {
  background: var(--tt-pink);
  color: #FFFFFF;
  box-shadow: 0 4px 14px rgba(254, 44, 85, 0.45);
}

.download-action-btn:hover {
  background: var(--tt-pink-hover);
  transform: translateY(-1px);
  box-shadow: 0 6px 18px rgba(254, 44, 85, 0.55);
}

.secondary-action-btn {
  background: rgba(255, 255, 255, 0.08);
  color: #FFFFFF;
  border: 1px solid rgba(255, 255, 255, 0.16);
}

.secondary-action-btn:hover {
  background: rgba(255, 255, 255, 0.14);
  border-color: rgba(255, 255, 255, 0.3);
}

.text-action-btn {
  background: none;
  color: rgba(255, 255, 255, 0.65);
  font-size: 0.875rem;
  font-weight: 500;
  padding: 6px;
}

.text-action-btn:hover {
  color: #FFFFFF;
  text-decoration: underline;
}

/* ==========================================================================
   3. Content Section: Pure White Background (#FFFFFF)
   ========================================================================== */
.content-section {
  background: var(--color-white);
  padding: 80px 20px;
  flex: 1;
}

.content-container {
  max-width: 860px;
  margin: 0 auto;
}

.section-title {
  font-size: 1.85rem;
  font-weight: 800;
  text-align: center;
  color: var(--color-black);
  margin-bottom: 44px;
  letter-spacing: -0.02em;
}

.steps-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}

.step-card {
  background: #FAFAFA;
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-md);
  padding: 32px 24px;
  text-align: center;
  position: relative;
  transition: transform 0.2s ease, box-shadow 0.2s ease, border-color 0.2s ease;
}

.step-card:hover {
  transform: translateY(-3px);
  border-color: var(--tt-pink-border);
  box-shadow: var(--shadow-sm);
}

.step-badge {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: var(--tt-black);
  color: #FFFFFF;
  font-size: 1.15rem;
  font-weight: 800;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 20px auto;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
}

.step-title {
  font-size: 1.125rem;
  font-weight: 700;
  color: var(--color-black);
  margin-bottom: 10px;
}

.step-desc {
  font-size: 0.938rem;
  color: var(--color-gray-mid);
  line-height: 1.55;
}

.content-divider {
  height: 1px;
  background: var(--color-border-light);
  margin: 64px 0 48px 0;
}

/* Info & Limitations Block */
.info-block {
  max-width: 780px;
  margin: 0 auto;
}

.info-note {
  background: #F8F9FA;
  border: 1px solid var(--color-border);
  border-left: 4px solid var(--tt-cyan);
  border-radius: var(--radius-sm);
  padding: 20px 24px;
  display: flex;
  gap: 16px;
}

.info-icon {
  color: var(--color-black);
  flex-shrink: 0;
  margin-top: 2px;
}

.info-text strong {
  display: block;
  font-size: 0.938rem;
  color: var(--color-black);
  margin-bottom: 6px;
}

.info-text p {
  font-size: 0.875rem;
  color: #555555;
  line-height: 1.6;
}

/* ==========================================================================
   4. Minimal Footer
   ========================================================================== */
.footer {
  background: #080808;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  padding: 36px 20px;
  text-align: center;
  color: rgba(255, 255, 255, 0.55);
  font-size: 0.8125rem;
}

.footer-container {
  max-width: 760px;
  margin: 0 auto;
}

.footer-disclaimer {
  line-height: 1.5;
  margin-bottom: 10px;
}

.footer-copy {
  color: rgba(255, 255, 255, 0.35);
}

/* Helpers */
.hidden {
  display: none !important;
}

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

/* ==========================================================================
   Responsive Adaptations
   ========================================================================== */
@media (max-width: 768px) {
  .hero-title {
    font-size: 1.85rem;
  }
  
  .hero-subtitle {
    font-size: 1rem;
    margin-bottom: 24px;
  }

  .downloader-form {
    flex-direction: column;
    padding: 10px;
    border-radius: var(--radius-md);
  }

  .input-wrapper {
    width: 100%;
  }

  .download-btn {
    width: 100%;
    padding: 14px;
  }

  .result-card {
    grid-template-columns: 1fr;
  }

  .result-video-wrapper {
    max-height: 340px;
  }

  .steps-grid {
    grid-template-columns: 1fr;
    gap: 20px;
  }

  .content-section {
    padding: 50px 20px;
  }
}