:root {
  --primary-color: #ff0000;
  --secondary-color: #1a73e8;
  --background-color: #ffffff;
  --card-background: #ffffff;
  --text-color: #333333;
  --border-color: #e0e0e0;
  --shadow-color: rgba(0, 0, 0, 0.1);
}

[data-theme="dark"] {
  --background-color: #1a1a1a;
  --card-background: #2d2d2d;
  --text-color: #ffffff;
  --border-color: #404040;
  --shadow-color: rgba(0, 0, 0, 0.3);
}

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

body {
  font-family: "Segoe UI", Tahoma, Geneva, Verdana, sans-serif;
  background-color: var(--background-color);
  color: var(--text-color);
  transition: background-color 0.3s, color 0.3s;
}

.app-container {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

.navbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1rem 2rem;
  background-color: var(--card-background);
  box-shadow: 0 2px 10px var(--shadow-color);
}

.logo {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 1.5rem;
  font-weight: bold;
}

.logo i {
  color: var(--primary-color);
}

.theme-toggle {
  cursor: pointer;
  padding: 0.5rem;
}

.main-content {
  flex: 1;
  padding: 2rem;
  max-width: 1200px;
  margin: 0 auto;
  width: 100%;
}

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

.hero-section h1 {
  font-size: 2.5rem;
  margin-bottom: 1rem;
  background: linear-gradient(
    45deg,
    var(--primary-color),
    var(--secondary-color)
  );
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.download-card {
  background-color: var(--card-background);
  border-radius: 20px;
  padding: 2rem;
  box-shadow: 0 4px 20px var(--shadow-color);
  margin-bottom: 3rem;
}

.url-input-container {
  display: flex;
  align-items: center;
  gap: 1rem;
  background-color: var(--background-color);
  padding: 0.5rem 1rem;
  border-radius: 10px;
  border: 2px solid var(--border-color);
  margin-bottom: 1rem;
}

.url-input-container i {
  color: var(--secondary-color);
}

#url-input {
  flex: 1;
  border: none;
  background: none;
  padding: 0.5rem;
  font-size: 1rem;
  color: var(--text-color);
  outline: none;
}

.paste-btn {
  background: none;
  border: none;
  cursor: pointer;
  color: var(--secondary-color);
}

.video-preview {
  margin: 1rem 0;
  border-radius: 10px;
  overflow: hidden;
  display: none;
}

.download-btn {
  width: 100%;
  padding: 1rem;
  background-color: var(--secondary-color);
  color: white;
  border: none;
  border-radius: 10px;
  font-size: 1.1rem;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  transition: transform 0.2s;
}

.download-btn:hover {
  transform: translateY(-2px);
}

.download-progress {
  margin-top: 1rem;
}

.progress-bar {
  height: 6px;
  background-color: var(--border-color);
  border-radius: 3px;
  overflow: hidden;
  margin-bottom: 0.5rem;
}

.progress-fill {
  height: 100%;
  width: 0;
  background-color: var(--secondary-color);
  transition: width 0.3s;
}

.status-text {
  text-align: center;
  color: var(--text-color);
}

.features-section {
  text-align: center;
}

.features-section h2 {
  margin-bottom: 2rem;
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 2rem;
}

.feature-card {
  padding: 1.5rem;
  background-color: var(--card-background);
  border-radius: 15px;
  box-shadow: 0 4px 15px var(--shadow-color);
  transition: transform 0.3s;
}

.feature-card:hover {
  transform: translateY(-5px);
}

.feature-card i {
  font-size: 2rem;
  color: var(--secondary-color);
  margin-bottom: 1rem;
}

.footer {
  background: var(--card-background);
  padding: 2rem;
  margin-top: auto;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-content {
  max-width: 1200px;
  margin: 0 auto;
  text-align: center;
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.footer .fa-heart {
  color: var(--primary-color);
  animation: heartbeat 1.5s infinite;
}

.credits {
  font-size: 1.1rem;
  color: var(--text-color);
}

.developer-link {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  color: var(--secondary-color);
  text-decoration: none;
  padding: 0.3rem 0.8rem;
  border-radius: 20px;
  transition: all 0.3s ease;
  font-weight: 500;
}

.developer-link:hover {
  background: linear-gradient(
    45deg,
    var(--primary-color),
    var(--secondary-color)
  );
  color: white;
  transform: translateY(-2px);
  box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
}

.developer-link .fab {
  font-size: 1.2rem;
}

@keyframes heartbeat {
  0% {
    transform: scale(1);
  }
  50% {
    transform: scale(1.2);
  }
  100% {
    transform: scale(1);
  }
}

/* Dark Mode Adjustment */
[data-theme="dark"] .footer {
  background: rgba(45, 45, 45, 0.9);
  border-top: 1px solid rgba(255, 255, 255, 0.05);
}

[data-theme="dark"] .developer-link {
  color: #1a73e8;
}

[data-theme="dark"] .developer-link:hover {
  background: linear-gradient(45deg, #ff0000, #1a73e8);
}

@media (max-width: 768px) {
  .main-content {
    padding: 1rem;
  }

  .hero-section h1 {
    font-size: 2rem;
  }

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

/* Download Options Styling */
.download-options {
  background: var(--card-bg);
  padding: 1.5rem;
  border-radius: 10px;
  margin: 1rem 0;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

.format-selector,
.quality-selector,
.trim-option {
  margin-bottom: 1rem;
  display: flex;
  align-items: center;
  gap: 1rem;
}

.format-selector label,
.quality-selector label,
.trim-option label {
  min-width: 100px;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  color: var(--text-primary);
}

.format-selector select,
.quality-selector select {
  padding: 0.5rem;
  border-radius: 5px;
  border: 1px solid var(--border-color);
  background: var(--input-bg);
  color: var(--text-primary);
  width: 200px;
  cursor: pointer;
}

.trim-inputs {
  display: flex;
  gap: 1rem;
}

.trim-inputs input {
  width: 120px;
  padding: 0.5rem;
  border-radius: 5px;
  border: 1px solid var(--border-color);
  background: var(--input-bg);
  color: var(--text-primary);
}

/* Batch Processing Styling */
.batch-processing {
  background: var(--card-bg);
  padding: 2rem;
  border-radius: 15px;
  margin: 2rem 0;
}

.batch-options {
  display: grid;
  gap: 1.5rem;
  margin-top: 1rem;
}

.batch-input {
  position: relative;
  display: flex;
  align-items: center;
}

.batch-input input[type="file"] {
  display: none;
}

.batch-input label {
  padding: 0.8rem 1.5rem;
  background: var(--primary-color);
  color: white;
  border-radius: 8px;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  transition: background 0.3s;
}

.batch-input label:hover {
  background: var(--primary-color-dark);
}

.naming-template input,
.output-folder select {
  width: 100%;
  padding: 0.8rem;
  border-radius: 8px;
  border: 1px solid var(--border-color);
  background: var(--input-bg);
  color: var(--text-primary);
}

/* Premium Features Styling */
.premium-features {
  background: linear-gradient(145deg, var(--card-bg), var(--card-bg-dark));
  padding: 2rem;
  border-radius: 15px;
  margin: 2rem 0;
}

.feature-card.premium {
  position: relative;
  border: 2px solid #ffd700;
  overflow: hidden;
}

.premium-badge {
  position: absolute;
  top: 10px;
  right: 10px;
  background: #ffd700;
  color: #000;
  padding: 0.3rem 0.8rem;
  border-radius: 20px;
  font-size: 0.8rem;
  font-weight: bold;
}

/* Quick Tools Styling */
.quick-tools {
  padding: 2rem;
  background: var(--card-bg);
  border-radius: 15px;
  margin: 2rem 0;
}

.tools-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 1rem;
  margin-top: 1.5rem;
}

.tool-btn {
  display: flex;
  align-items: center;
  gap: 0.8rem;
  padding: 1rem;
  background: var(--input-bg);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  color: var(--text-primary);
  cursor: pointer;
  transition: all 0.3s;
}

.tool-btn:hover {
  background: var(--primary-color);
  color: white;
  transform: translateY(-2px);
}

/* Responsive Adjustments */
@media (max-width: 768px) {
  .download-options,
  .batch-options {
    grid-template-columns: 1fr;
  }

  .trim-inputs {
    flex-direction: column;
  }

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

/* Animation Effects */
.feature-card {
  transition: transform 0.3s, box-shadow 0.3s;
}

.feature-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 5px 15px rgba(0, 0, 0, 0.2);
}

.premium-badge {
  animation: shine 2s infinite;
}

@keyframes shine {
  0% {
    opacity: 1;
  }
  50% {
    opacity: 0.7;
  }
  100% {
    opacity: 1;
  }
}

/* Dark Mode Adjustments */
[data-theme="dark"] .premium-badge {
  background: #ffd700;
  color: #000;
}

[data-theme="dark"] .tool-btn {
  background: var(--card-bg-dark);
}

[data-theme="dark"] .tool-btn:hover {
  background: var(--primary-color);
  color: white;
}

/* Section Headers Styling */
.advanced-features h2,
.batch-processing h2,
.premium-features h2,
.quick-tools h2 {
  font-size: 2.2rem;
  margin-bottom: 2rem;
  text-align: center;
  position: relative;
  padding-bottom: 1rem;
  background: linear-gradient(
    45deg,
    var(--primary-color),
    var(--secondary-color)
  );
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.advanced-features h2::after,
.batch-processing h2::after,
.premium-features h2::after,
.quick-tools h2::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 100px;
  height: 4px;
  background: linear-gradient(
    45deg,
    var(--primary-color),
    var(--secondary-color)
  );
  border-radius: 2px;
}

/* Section Containers Enhancement */
.advanced-features,
.batch-processing,
.premium-features,
.quick-tools {
  background: var(--card-background);
  border-radius: 25px;
  padding: 3rem;
  margin: 3rem 0;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
  border: 1px solid rgba(255, 255, 255, 0.1);
  position: relative;
  overflow: hidden;
}

/* Add decorative elements */
.advanced-features::before,
.batch-processing::before,
.premium-features::before,
.quick-tools::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 5px;
  background: linear-gradient(
    90deg,
    var(--primary-color),
    var(--secondary-color)
  );
}

/* Feature Cards Enhancement */
.feature-card {
  background: var(--card-background);
  border-radius: 20px;
  padding: 2rem;
  text-align: center;
  position: relative;
  z-index: 1;
  border: 1px solid rgba(255, 255, 255, 0.1);
  backdrop-filter: blur(10px);
  transition: all 0.3s ease;
}

.feature-card:hover {
  transform: translateY(-10px);
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.15);
}

.feature-card i {
  font-size: 2.5rem;
  margin-bottom: 1.5rem;
  background: linear-gradient(
    45deg,
    var(--primary-color),
    var(--secondary-color)
  );
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.feature-card h3 {
  font-size: 1.4rem;
  margin-bottom: 1rem;
  color: var(--text-color);
}

/* Premium Features Enhancement */
.premium-features {
  background: linear-gradient(
    145deg,
    rgba(var(--card-background), 0.8),
    rgba(var(--card-background), 0.9)
  );
}

.feature-card.premium {
  border: 2px solid transparent;
  background: linear-gradient(var(--card-background), var(--card-background))
      padding-box,
    linear-gradient(45deg, #ffd700, #ff6b6b) border-box;
  position: relative;
}

.premium-badge {
  background: linear-gradient(45deg, #ffd700, #ff6b6b);
  padding: 0.5rem 1rem;
  border-radius: 25px;
  font-weight: bold;
  text-transform: uppercase;
  letter-spacing: 1px;
  box-shadow: 0 5px 15px rgba(255, 215, 0, 0.3);
}

/* Quick Tools Enhancement */
.tool-btn {
  background: var(--card-background);
  padding: 1.2rem;
  border-radius: 15px;
  font-size: 1.1rem;
  font-weight: 500;
  letter-spacing: 0.5px;
  border: 1px solid rgba(255, 255, 255, 0.1);
  box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
}

.tool-btn:hover {
  background: linear-gradient(
    45deg,
    var(--primary-color),
    var(--secondary-color)
  );
  color: white;
  transform: translateY(-5px);
  box-shadow: 0 10px 20px rgba(0, 0, 0, 0.1);
}

/* Batch Processing Enhancement */
.batch-options {
  background: var(--background-color);
  padding: 2rem;
  border-radius: 20px;
  box-shadow: inset 0 2px 10px rgba(0, 0, 0, 0.1);
}

/* Responsive Design Enhancement */
@media (max-width: 768px) {
  .advanced-features,
  .batch-processing,
  .premium-features,
  .quick-tools {
    padding: 2rem 1rem;
  }

  .feature-card {
    padding: 1.5rem;
  }

  .feature-card i {
    font-size: 2rem;
  }
}

/* Dark Mode Enhancements */
[data-theme="dark"] .advanced-features,
[data-theme="dark"] .batch-processing,
[data-theme="dark"] .premium-features,
[data-theme="dark"] .quick-tools {
  background: rgba(45, 45, 45, 0.9);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
}

[data-theme="dark"] .feature-card {
  background: rgba(35, 35, 35, 0.9);
  border: 1px solid rgba(255, 255, 255, 0.05);
}