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

html, body {
  height: 100%;
  overflow: hidden;
  overscroll-behavior: none;
}

body {
  background-color: #0d0d0d;
  color: rgba(255, 255, 255, 0.75);
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', system-ui, sans-serif;
  font-weight: 300;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* --- Fixed page header --- */

.page-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 1rem 1rem 0;
  z-index: 10;
  pointer-events: none;
}

.page-header .label {
  margin-bottom: 0.5rem;
}

.page-header-dots {
  display: flex;
  gap: 8px;
  align-items: center;
  pointer-events: auto;
  padding-bottom: 0.5rem;
}

/* --- Carousel layout --- */

.carousel {
  display: flex;
  overflow-x: auto;
  scroll-snap-type: x mandatory;
  overscroll-behavior-x: none;
  height: 100dvh;
  scrollbar-width: none;
}

.carousel::-webkit-scrollbar {
  display: none;
}

.page {
  flex: 0 0 100%;
  scroll-snap-align: center;
  min-height: 100dvh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: flex-start;
  padding: 0 1.5rem 4rem;
  overflow-y: auto;
}

.page-content {
  display: flex;
  flex-direction: column;
  align-items: center;
  width: 100%;
  max-width: 480px;
  margin: auto 0;
  padding: 5rem 0 2rem; /* top pad clears the fixed header */
}

/* --- Typography --- */

.label {
  font-size: 0.8rem;
  font-weight: 400;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: rgba(255, 255, 255, 0.3);
  margin-bottom: 1.6rem;
}

nav {
  display: flex;
  flex-direction: column;
  align-items: center;
  width: 100%;
  max-width: 480px;
}

/* --- Link wrapper (for delete support) --- */

.link-wrapper {
  position: relative;
  width: 100%;
  overflow: hidden;
}

.link-content {
  display: block;
  position: relative;
  z-index: 1;
  font-size: clamp(1.5rem, 6vw, 1.9rem);
  font-weight: 300;
  line-height: 2.2;
  color: #1DB954;
  text-decoration: none;
  text-align: center;
  -webkit-tap-highlight-color: transparent;
  transition: color 0.15s ease;
  background-color: #0d0d0d;
}

.link-content:hover,
.link-content:focus-visible {
  color: #1ed760;
}

.link-content:active {
  color: rgba(29, 185, 84, 0.55);
}

/* --- Delete button --- */

.delete-btn {
  position: absolute;
  right: 0;
  top: 0;
  height: 100%;
  background: #e74c3c;
  color: white;
  border: none;
  cursor: pointer;
  font-size: 0.85rem;
  font-weight: 400;
  display: flex;
  align-items: center;
  justify-content: center;
}

/* Touch devices: red "Delete" behind swipe */
@media (hover: none) {
  .delete-btn {
    width: 80px;
    padding: 0 1rem;
  }
}

/* Desktop: small X on hover */
@media (hover: hover) {
  .delete-btn {
    width: 2rem;
    background: transparent;
    color: rgba(255, 255, 255, 0.2);
    font-size: 1.1rem;
    opacity: 0;
    transition: opacity 0.15s ease, color 0.15s ease;
    z-index: 2;
  }

  .link-wrapper:hover .delete-btn {
    opacity: 1;
  }

  .delete-btn:hover {
    color: #e74c3c;
  }
}

/* --- Indicators --- */

.indicators {
  position: fixed;
  inset: 0;
  z-index: 10;
  pointer-events: none;
}

.dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.25);
  border: none;
  padding: 0;
  cursor: pointer;
  transition: background 0.2s ease;
}

.dot.active {
  background: #1DB954;
}

.arrow {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  background: none;
  border: none;
  color: rgba(255, 255, 255, 0.3);
  font-size: 2rem;
  cursor: pointer;
  padding: 0.75rem 0.5rem;
  line-height: 1;
  display: none;
  pointer-events: auto;
}

.arrow-left {
  left: 0.25rem;
}

.arrow-right {
  right: 0.25rem;
}

@media (hover: hover) {
  .arrow {
    display: block;
  }

  .arrow:hover {
    color: rgba(255, 255, 255, 0.6);
  }
}

/* --- Floating add button --- */

.fab {
  position: fixed;
  bottom: 1.5rem;
  right: 1.5rem;
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: #1DB954;
  color: white;
  border: none;
  font-size: 1.5rem;
  line-height: 1;
  cursor: pointer;
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background 0.15s ease;
  -webkit-tap-highlight-color: transparent;
}

.fab:hover {
  background: #1ed760;
}

/* --- Dialog --- */

.dialog-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.7);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 30;
  padding: 1rem;
}

.dialog-backdrop.hidden {
  display: none;
}

.dialog {
  background: #1a1a1a;
  border-radius: 12px;
  padding: 1.5rem;
  width: 90%;
  max-width: 360px;
}

.dialog-title {
  color: white;
  font-size: 1.1rem;
  font-weight: 400;
  margin-bottom: 1.2rem;
}

.form-group {
  margin-bottom: 0.8rem;
}

.form-group input {
  width: 100%;
  padding: 0.7rem 0.8rem;
  background: #2a2a2a;
  border: 1px solid #3a3a3a;
  border-radius: 8px;
  color: rgba(255, 255, 255, 0.85);
  font-size: 0.95rem;
  font-family: inherit;
  outline: none;
  transition: border-color 0.15s ease;
}

.form-group input::placeholder {
  color: rgba(255, 255, 255, 0.25);
}

.form-group input:focus {
  border-color: #1DB954;
}

.dialog-buttons {
  display: flex;
  justify-content: flex-end;
  gap: 0.8rem;
  margin-top: 1.2rem;
}

.btn-cancel {
  background: none;
  border: none;
  color: rgba(255, 255, 255, 0.4);
  font-size: 0.95rem;
  cursor: pointer;
  padding: 0.5rem 1rem;
  font-family: inherit;
}

.btn-cancel:hover {
  color: rgba(255, 255, 255, 0.6);
}

.btn-add {
  background: #1DB954;
  color: white;
  border: none;
  border-radius: 8px;
  font-size: 0.95rem;
  cursor: pointer;
  padding: 0.5rem 1.2rem;
  font-family: inherit;
  transition: background 0.15s ease;
}

.btn-add:hover {
  background: #1ed760;
}

/* --- Empty state --- */

.empty-message {
  font-size: 0.9rem;
  color: rgba(255, 255, 255, 0.3);
  letter-spacing: 0.05em;
  margin-bottom: 1.5rem;
}

.empty-add-btn {
  background: none;
  border: 1px solid #1DB954;
  color: #1DB954;
  border-radius: 8px;
  font-size: 0.95rem;
  cursor: pointer;
  padding: 0.6rem 1.4rem;
  font-family: inherit;
  transition: background 0.15s ease, color 0.15s ease;
}

.empty-add-btn:hover {
  background: #1DB954;
  color: white;
}

/* --- Utility --- */

.hidden {
  display: none !important;
}