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

[hidden] {
  display: none;
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

:root {
  --bg: #0d0d0d;
  --surface: #1a1a1a;
  --border: #2e2e2e;
  --text: #f0f0f0;
  --muted: #808080;
  --accent: #6366f1;
  --accent-hover: #4f46e5;
  --error: #ef4444;
  --warning: #eab308;
}

[data-theme="light"] {
  --bg: #f5f5f5;
  --surface: #ffffff;
  --border: #d4d4d4;
  --text: #111111;
  --muted: #6e6e6e;
  --accent: #4f46e5;
  --accent-hover: #4338ca;
  --error: #dc2626;
  --warning: #a16207;
}

body {
  background: var(--bg);
  color: var(--text);
  font-family:
    system-ui,
    -apple-system,
    sans-serif;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 2.5rem;
  padding: 2rem;
}

h1 {
  font-size: clamp(3rem, 12vw, 8rem);
  font-weight: 900;
  letter-spacing: -0.04em;
  line-height: 1;

  span.title__word--secondary {
    opacity: 0.7;
  }
  span.title__word--tertiary {
    opacity: 0.3;
  }
  span.title__word--primary {
    opacity: 1;
    text-transform: uppercase;
  }
}

main {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1.25rem;
  width: 100%;
  max-width: 640px;
}

.input-row {
  width: 100%;
  display: flex;
  gap: 0.5rem;

  .url-input {
    flex: 1;
  }

  button {
    flex-shrink: 0;
    background: var(--surface);
    color: var(--text);
    border: 1.5px solid var(--border);
    border-radius: 0.5rem;
    padding: 0 0.75rem;
    cursor: pointer;
    display: flex;
    align-items: center;
    transition: border-color 0.15s;

    &:hover {
      border-color: var(--accent);
    }
  }

  #paste svg,
  #clear svg {
    width: 21px;
    height: 21px;
  }
}

.url-input {
  width: 100%;
  padding: 1rem 1.25rem;
  font-size: 1rem;
  font-family: inherit;
  background: var(--surface);
  color: var(--text);
  border: 1.5px solid var(--border);
  border-radius: 0.5rem;
  outline: none;
  transition: border-color 0.15s;

  &::placeholder {
    color: var(--muted);
  }

  &:focus {
    border-color: var(--accent);
  }
}

.url-output {
  width: 100%;
  min-height: 3.5rem;
  padding: 1rem 1.25rem;
  font-size: 1.1rem;
  font-weight: 500;
  color: var(--accent);
  word-break: break-all;
  text-align: center;
  border: 1.5px dashed var(--border);
  border-radius: 0.5rem;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: border-color 0.15s;

  &:not(:empty) {
    border-style: solid;
    border-color: var(--accent);
  }

  &:empty::before {
    content: '[stripped URL will appear here]';
    color: var(--muted);
    font-size: 0.9rem;
    font-weight: 400;
  }

}

.plus-page output:empty::before {
  content: '[URL with tracking removed]';
}

.plus-page {
  --bg: #0e0c1a;
  --surface: #16132b;
  --border: #3a3356;
}

[data-theme="light"] .plus-page {
  --bg: #f0eeff;
  --surface: #faf9ff;
  --border: #c4b8f0;
  --muted: #5f5f5f;
}

.plus-page .url-input,
.plus-page .url-output {
  border-width: 3px;
}

.plus-page .input-row button {
  border-width: 3px;
}

.plus-page .url-output {
  border-style: solid;
  border-color: var(--accent);
}

.plus-page .title__word--plus {
  color: var(--accent);
}

.plus-page .mode-nav__active {
  color: var(--accent);
}

.plus-page .copy-btn {
  font-weight: 800;
}

.url-status {
  font-size: 0.75rem;
  color: var(--muted);
  text-align: center;
  min-height: 1em;

  &[data-state='invalid'] {
    color: var(--error);
    font-size: 0.875rem;
    font-weight: 500;
  }

  &[data-state='warn'] {
    color: var(--warning);
    font-size: 0.875rem;
    font-weight: 500;
  }

  &[data-state='warn'] .warn-link {
    color: var(--accent);
  }
}

.site-header {
  display: flex;
  flex-direction: column;
  align-items: center;
}

.mode-nav {
  display: flex;
  gap: 0.5rem;
  align-items: center;
  font-size: 0.8125rem;
  color: var(--muted);
  margin-top: 0.25rem;
}

.mode-nav__active {
  color: var(--text);
  font-weight: 500;
}

.mode-nav__link {
  color: var(--muted);
  text-decoration: none;
  padding: 0.375rem 0.25rem;
  margin: -0.375rem -0.25rem;
}

.mode-nav__link:hover {
  color: var(--text);
}

#theme-toggle {
  position: fixed;
  top: 1.25rem;
  right: 1.25rem;
  background: var(--surface);
  color: var(--text);
  border: 1.5px solid var(--border);
  border-radius: 0.5rem;
  padding: 0.5rem;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: border-color 0.15s;

  &:hover {
    border-color: var(--accent);
  }
}

.action-row {
  width: 100%;
  display: flex;
  gap: 0.75rem;

  .copy-btn {
    flex: 1;
  }

  .open-btn {
    flex: 1;
  }
}

.copy-btn,
.open-btn {
  width: 100%;
  padding: 0.9rem 2.5rem;
  font-size: 1rem;
  font-family: inherit;
  font-weight: 600;
  border-radius: 999px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.6rem;
  transition:
    background 0.15s,
    color 0.15s,
    transform 0.1s;

  &:active {
    transform: scale(0.97);
  }
}

.copy-btn {
  background: var(--accent);
  color: #fff;
  border: none;

  &:hover {
    background: var(--accent-hover);
  }
}

.open-btn {
  background: transparent;
  color: var(--accent);
  border: 2px solid var(--accent);

  &:hover {
    background: var(--accent);
    color: #fff;
  }
}

.site-footer {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.25rem;
  font-size: 0.75rem;
  color: var(--muted);
  text-align: center;

  a {
    color: var(--muted);
    text-decoration: underline;

    &:hover {
      color: var(--text);
    }
  }
}