*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}
:root {
  --blue-50: #eff6ff;
  --blue-100: #dbeafe;
  --blue-200: #bfdbfe;
  --blue-400: #60a5fa;
  --blue-500: #3b82f6;
  --blue-600: #2563eb;
  --blue-700: #1d4ed8;
  --blue-800: #1e40af;
  --blue-900: #1e3a8a;
  --white: #ffffff;
  --gray-50: #f8fafc;
  --gray-100: #f1f5f9;
  --gray-200: #e2e8f0;
  --gray-400: #94a3b8;
  --gray-600: #475569;
  --gray-900: #0f172a;
}
body {
  font-family: "Plus Jakarta Sans", sans-serif;
  background: var(--white);
  color: var(--gray-900);
  min-height: 100vh;
  line-height: 1.6;
}

/* NAV */
nav {
  background: var(--white);
  border-bottom: 1px solid var(--blue-100);
  padding: 0 2rem;
  height: 64px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  position: sticky;
  top: 0;
  z-index: 100;
  box-shadow: 0 1px 12px rgba(37, 99, 235, 0.06);
}
/* .nav-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--blue-700);
  text-decoration: none;
}
.nav-logo-icon {
  width: 36px;
  height: 36px;
  background: linear-gradient(135deg, var(--blue-500), var(--blue-700));
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-size: 16px;
} */

.nav-logo {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 1.2rem;
  font-weight: 600;
  color: var(--blue-600);
  text-decoration: none;
}
.nav-logo img,
.nav-logo svg {
  width: 36px;
  height: 36px;
  display: block;
  flex-shrink: 0;
}
.logo-muted {
  color: var(--gray-600);
}
.nav-links {
  display: flex;
  align-items: center;
  gap: 2rem;
  list-style: none;
}
.nav-links a {
  text-decoration: none;
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--gray-600);
  transition: color 0.2s;
}
.nav-links a:hover {
  color: var(--blue-600);
}
.btn-nav {
  background: var(--blue-600);
  color: white !important;
  padding: 8px 20px;
  border-radius: 8px;
  transition: background 0.2s !important;
}
.btn-nav:hover {
  background: var(--blue-700) !important;
  color: white !important;
}

/* HERO */
.hero {
  background: linear-gradient(160deg, var(--blue-50) 0%, var(--white) 60%);
  padding: 5rem 2rem 3rem;
  text-align: center;
}
.badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: var(--blue-100);
  color: var(--blue-700);
  font-size: 0.8rem;
  font-weight: 600;
  padding: 4px 14px;
  border-radius: 99px;
  margin-bottom: 1.5rem;
  letter-spacing: 0.02em;
}
.hero h1 {
  font-size: clamp(2rem, 5vw, 3.2rem);
  font-weight: 700;
  color: var(--gray-900);
  line-height: 1.2;
  margin-bottom: 1rem;
}
.hero h1 span {
  color: var(--blue-600);
}
.hero p {
  font-size: 1.05rem;
  color: var(--gray-600);
  max-width: 560px;
  margin: 0 auto 2.5rem;
}

/* UPLOAD CARD */
.main-card {
  max-width: 860px;
  margin: 0 auto;
  padding: 0 1.5rem 4rem;
}
.upload-card {
  background: var(--white);
  border: 2px dashed var(--blue-200);
  border-radius: 20px;
  padding: 3rem 2rem;
  text-align: center;
  cursor: pointer;
  transition:
    border-color 0.25s,
    background 0.25s;
  position: relative;
  overflow: hidden;
}
.upload-card:hover,
.upload-card.drag-over {
  border-color: var(--blue-500);
  background: var(--blue-50);
}
.upload-icon {
  width: 72px;
  height: 72px;
  background: var(--blue-100);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 1.25rem;
  font-size: 28px;
  color: var(--blue-600);
}
.upload-card h3 {
  font-size: 1.15rem;
  font-weight: 600;
  margin-bottom: 0.5rem;
}
.upload-card p {
  color: var(--gray-400);
  font-size: 0.9rem;
  margin-bottom: 1.25rem;
}
.btn-upload {
  display: inline-block;
  background: var(--blue-600);
  color: white;
  padding: 10px 28px;
  border-radius: 10px;
  font-size: 0.9rem;
  font-weight: 600;
  border: none;
  cursor: pointer;
  transition:
    background 0.2s,
    transform 0.1s;
}
.btn-upload:hover {
  background: var(--blue-700);
}
.btn-upload:active {
  transform: scale(0.98);
}
.upload-card input[type="file"] {
  display: none;
}
.supported {
  font-size: 0.8rem;
  color: var(--gray-400);
  margin-top: 1rem;
}

/* SETTINGS */
.settings-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 1rem;
  margin: 1.5rem 0;
}
.setting-box {
  background: var(--gray-50);
  border: 1px solid var(--blue-100);
  border-radius: 14px;
  padding: 1.1rem 1.25rem;
}
.setting-box label {
  display: block;
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--gray-600);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 0.75rem;
}
.radio-group {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}
.radio-pill {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: white;
  border: 1px solid var(--blue-200);
  border-radius: 99px;
  padding: 5px 14px;
  font-size: 0.82rem;
  font-weight: 500;
  color: var(--gray-600);
  cursor: pointer;
  transition: all 0.18s;
}
.radio-pill input {
  display: none;
}
.radio-pill:has(input:checked),
.radio-pill.active {
  background: var(--blue-600);
  border-color: var(--blue-600);
  color: white;
}

/* URL INPUT */
.url-row {
  display: flex;
  gap: 10px;
  margin-bottom: 1rem;
}
.url-input {
  flex: 1;
  border: 1.5px solid var(--blue-200);
  border-radius: 10px;
  padding: 10px 14px;
  font-size: 0.9rem;
  font-family: inherit;
  outline: none;
  color: var(--gray-900);
  background: var(--white);
  transition: border-color 0.2s;
}
.url-input:focus {
  border-color: var(--blue-500);
}
.btn-secondary {
  background: var(--blue-50);
  border: 1.5px solid var(--blue-200);
  color: var(--blue-700);
  padding: 10px 18px;
  border-radius: 10px;
  font-size: 0.88rem;
  font-weight: 600;
  cursor: pointer;
  white-space: nowrap;
  transition: background 0.2s;
  font-family: inherit;
}
.btn-secondary:hover {
  background: var(--blue-100);
}

/* DIVIDER */
.divider {
  display: flex;
  align-items: center;
  gap: 12px;
  margin: 1.25rem 0;
  color: var(--gray-400);
  font-size: 0.82rem;
}
.divider::before,
.divider::after {
  content: "";
  flex: 1;
  height: 1px;
  background: var(--blue-100);
}

/* ACTION BUTTON */
.btn-process {
  width: 100%;
  background: linear-gradient(90deg, var(--blue-600), var(--blue-500));
  color: white;
  border: none;
  border-radius: 12px;
  padding: 14px;
  font-size: 1rem;
  font-weight: 700;
  cursor: pointer;
  letter-spacing: 0.01em;
  transition:
    opacity 0.2s,
    transform 0.1s;
  margin-top: 1.25rem;
  font-family: inherit;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
}
.btn-process:hover {
  opacity: 0.92;
}
.btn-process:active {
  transform: scale(0.99);
}
.btn-process:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

/* PREVIEW AREA */
.preview-area {
  display: none;
  margin-top: 2rem;
  background: var(--gray-50);
  border: 1px solid var(--blue-100);
  border-radius: 16px;
  padding: 1.5rem;
}
.preview-area.visible {
  display: block;
}
.preview-label {
  font-size: 0.78rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--blue-600);
  margin-bottom: 0.75rem;
}
.preview-img-wrap {
  background: white;
  border: 1px solid var(--blue-100);
  border-radius: 12px;
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 160px;
}
.preview-img-wrap img {
  max-width: 100%;
  max-height: 320px;
  object-fit: contain;
  display: block;
}
.preview-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
  margin-top: 0;
}
@media (max-width: 540px) {
  .preview-row {
    grid-template-columns: 1fr;
  }
}

/* PROGRESS */
.progress-wrap {
  margin-top: 1.25rem;
  display: none;
}
.progress-wrap.visible {
  display: block;
}
.progress-bar-bg {
  height: 6px;
  background: var(--blue-100);
  border-radius: 99px;
  overflow: hidden;
  margin-bottom: 8px;
}
.progress-bar {
  height: 100%;
  background: linear-gradient(90deg, var(--blue-500), var(--blue-400));
  border-radius: 99px;
  width: 0%;
  transition: width 0.4s ease;
}
.progress-text {
  font-size: 0.82rem;
  color: var(--blue-600);
  font-weight: 500;
}

/* FEATURES */
.features {
  background: var(--blue-50);
  padding: 4rem 2rem;
  margin-top: 2rem;
}
.features-inner {
  max-width: 860px;
  margin: 0 auto;
}
.features h2 {
  text-align: center;
  font-size: 1.7rem;
  font-weight: 700;
  margin-bottom: 0.5rem;
  color: var(--gray-900);
}
.features-sub {
  text-align: center;
  color: var(--gray-600);
  margin-bottom: 2.5rem;
  font-size: 0.95rem;
}
.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 1.25rem;
}
.feat-card {
  background: white;
  border: 1px solid var(--blue-100);
  border-radius: 16px;
  padding: 1.5rem;
  transition:
    box-shadow 0.2s,
    transform 0.2s;
}
.feat-card:hover {
  box-shadow: 0 8px 32px rgba(37, 99, 235, 0.1);
  transform: translateY(-2px);
}
.feat-icon {
  width: 44px;
  height: 44px;
  background: var(--blue-100);
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  color: var(--blue-600);
  margin-bottom: 1rem;
}
.feat-card h4 {
  font-size: 0.95rem;
  font-weight: 700;
  margin-bottom: 0.4rem;
  color: var(--gray-900);
}
.feat-card p {
  font-size: 0.84rem;
  color: var(--gray-600);
  line-height: 1.55;
}

/* FOOTER */
footer {
  background: var(--gray-900);
  color: rgba(255, 255, 255, 0.7);
  text-align: center;
  padding: 2rem;
  font-size: 0.85rem;
}
footer span {
  color: var(--blue-400);
  font-weight: 600;
}
footer .heart {
  color: #dc2626;
}

/* TOAST */
.toast {
  position: fixed;
  bottom: 24px;
  right: 24px;
  background: var(--gray-900);
  color: white;
  padding: 12px 20px;
  border-radius: 10px;
  font-size: 0.88rem;
  font-weight: 500;
  opacity: 0;
  transform: translateY(12px);
  transition: all 0.3s;
  pointer-events: none;
  z-index: 999;
  border-left: 3px solid var(--blue-400);
}
.toast.show {
  opacity: 1;
  transform: translateY(0);
}

/* RESULT ACTIONS */
.result-actions {
  display: flex;
  gap: 10px;
  margin-top: 1rem;
}
.btn-dl {
  flex: 1;
  background: var(--blue-600);
  color: white;
  border: none;
  border-radius: 10px;
  padding: 10px;
  font-size: 0.88rem;
  font-weight: 600;
  cursor: pointer;
  font-family: inherit;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  transition: background 0.2s;
}
.btn-dl:hover {
  background: var(--blue-700);
}
.btn-dl-outline {
  flex: 1;
  background: transparent;
  color: var(--blue-600);
  border: 1.5px solid var(--blue-200);
  border-radius: 10px;
  padding: 10px;
  font-size: 0.88rem;
  font-weight: 600;
  cursor: pointer;
  font-family: inherit;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  transition: background 0.2s;
}
.btn-dl-outline:hover {
  background: var(--blue-50);
}

@media (max-width: 600px) {
  nav {
    padding: 0 1rem;
  }
  .nav-links {
    display: none;
  }
  .hero {
    padding: 3rem 1.25rem 2rem;
  }
  .main-card {
    padding: 0 1rem 3rem;
  }
  .upload-card {
    padding: 2rem 1.25rem;
  }
  .result-actions {
    flex-direction: column;
  }
}