/* --- Reset & Base -------------------------------- */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

:root {
  --green: #00ff88;
  --green-dim: #00cc6a;
  --green-glow: rgba(0, 255, 136, 0.18);
  --green-glow-strong: rgba(0, 255, 136, 0.35);
  --black: #050a08;
  --surface: rgba(10, 20, 14, 0.72);
  --surface-card: rgba(12, 24, 16, 0.80);
  --border: rgba(0, 255, 136, 0.18);
  --border-hover: rgba(0, 255, 136, 0.45);
  --text-primary: #e8fff4;
  --text-secondary: rgba(232, 255, 244, 0.55);
  --text-muted: rgba(232, 255, 244, 0.35);
  --font-display: 'Syne', sans-serif;
  --font-mono: 'Space Mono', monospace;
  --radius: 16px;
  --radius-sm: 10px;
  --transition: 0.22s cubic-bezier(0.4, 0, 0.2, 1);
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-display);
  background-color: var(--black);
  color: var(--text-primary);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  overflow-x: hidden;
  position: relative;
}

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

.hidden {
  display: none !important;
}

/* --- Background Canvas -------------------------- */
#bg-canvas {
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  opacity: 0.6;
}

/* --- Header ------------------------------------- */
.site-header {
  position: relative;
  z-index: 10;
  text-align: center;
  padding: 3rem 1rem 1.5rem;
}

.logo {
  font-family: var(--font-display);
  font-size: clamp(2.2rem, 5vw, 3.5rem);
  font-weight: 800;
  color: var(--text-primary);
  letter-spacing: -0.03em;
  line-height: 1;
}

.logo-w {
  color: var(--green);
  text-shadow:
    0 0 12px var(--green),
    0 0 40px rgba(0, 255, 136, 0.4);
}

.tagline {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--text-secondary);
  letter-spacing: 0.22em;
  text-transform: uppercase;
  margin-top: 0.5rem;
}

/* --- Main --------------------------------------- */
#main-content {
  position: relative;
  z-index: 10;
  flex: 1;
  width: 100%;
  max-width: 760px;
  margin: 0 auto;
  padding: 1.5rem 1.25rem 4rem;
}

/* --- Search Section ----------------------------- */
.search-section {
  margin-bottom: 2rem;
}

.search-bar-wrapper {
  display: flex;
  align-items: center;
  gap: 0;
  background: var(--surface);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 6px 6px 6px 22px;
  transition: border-color var(--transition), box-shadow var(--transition);
  box-shadow: 0 0 0 0 transparent;
}

.search-bar-wrapper:focus-within {
  border-color: var(--border-hover);
  box-shadow:
    0 0 0 1px var(--green-dim),
    0 0 24px var(--green-glow-strong),
    inset 0 0 12px rgba(0, 255, 136, 0.05);
}

.search-input {
  flex: 1;
  background: transparent;
  border: none;
  outline: none;
  font-family: var(--font-display);
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--text-primary);
  caret-color: var(--green);
  min-width: 0;
}

.search-input::placeholder {
  color: var(--text-muted);
  font-weight: 400;
}

.search-btn {
  flex-shrink: 0;
  background: var(--green);
  color: var(--black);
  border: none;
  border-radius: 999px;
  width: 44px;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: background var(--transition), box-shadow var(--transition), transform var(--transition);
  box-shadow: 0 0 16px var(--green-glow);
}

.search-btn:hover {
  background: #22ffaa;
  box-shadow: 0 0 28px var(--green-glow-strong);
  transform: scale(1.07);
}

.search-btn:active {
  transform: scale(0.96);
}

/* Hint words */
.search-hint {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--text-muted);
  margin-top: 0.85rem;
  text-align: center;
  letter-spacing: 0.02em;
}

.hint-word {
  background: none;
  border: none;
  color: var(--green-dim);
  font-family: var(--font-mono);
  font-size: inherit;
  cursor: pointer;
  padding: 0;
  text-decoration: underline;
  text-underline-offset: 2px;
  text-decoration-style: dotted;
  transition: color var(--transition);
}

.hint-word:hover {
  color: var(--green);
}

/* --- Error -------------------------------------- */
.error-message {
  background: rgba(255, 50, 80, 0.1);
  border: 1px solid rgba(255, 50, 80, 0.35);
  border-radius: var(--radius-sm);
  color: #ff8099;
  font-family: var(--font-mono);
  font-size: 0.85rem;
  padding: 1rem 1.25rem;
  text-align: center;
  margin-bottom: 1.5rem;
  animation: fadeIn 0.3s ease;
}

/* --- Loading ------------------------------------ */
.loading-state {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1rem;
  padding: 3rem 0;
  color: var(--text-secondary);
  font-family: var(--font-mono);
  font-size: 0.8rem;
  letter-spacing: 0.08em;
}

.spinner {
  width: 36px;
  height: 36px;
  border: 2px solid var(--border);
  border-top-color: var(--green);
  border-radius: 50%;
  animation: spin 0.75s linear infinite;
  box-shadow: 0 0 12px var(--green-glow);
}

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

/* --- Empty State -------------------------------- */
.empty-state {
  text-align: center;
  padding: 3.5rem 1rem;
  color: var(--text-muted);
  font-size: 0.9rem;
  line-height: 1.7;
}

.empty-icon {
  font-size: 2rem;
  color: var(--green);
  text-shadow: 0 0 20px var(--green-glow-strong);
  margin-bottom: 1rem;
  animation: pulse 2.5s ease-in-out infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 0.6; transform: scale(1); }
  50%       { opacity: 1;   transform: scale(1.12); }
}

/* --- Results Section ---------------------------- */
.results-section {
  animation: fadeIn 0.4s ease;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(8px); }
  to   { opacity: 1; transform: translateY(0); }
}

/* Word Header */
.word-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 1rem;
  margin-bottom: 2rem;
  padding-bottom: 1.5rem;
  border-bottom: 1px solid var(--border);
}

.word-meta {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}

.result-word {
  font-family: var(--font-display);
  font-size: clamp(2rem, 6vw, 3.2rem);
  font-weight: 800;
  color: var(--text-primary);
  letter-spacing: -0.03em;
  line-height: 1;
  text-shadow: 0 0 40px rgba(0, 255, 136, 0.1);
}

.result-phonetic {
  font-family: var(--font-mono);
  font-size: 0.95rem;
  color: var(--green-dim);
  letter-spacing: 0.04em;
}

/* Audio Button */
.audio-btn {
  display: flex;
  align-items: center;
  gap: 8px;
  background: var(--surface);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--border);
  border-radius: 999px;
  color: var(--green);
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.06em;
  padding: 0.55rem 1.1rem;
  cursor: pointer;
  transition: border-color var(--transition), box-shadow var(--transition), transform var(--transition);
}

.audio-btn:hover {
  border-color: var(--border-hover);
  box-shadow: 0 0 18px var(--green-glow);
  transform: scale(1.04);
}

.audio-btn.playing {
  color: var(--text-primary);
  background: var(--green-glow);
  box-shadow: 0 0 24px var(--green-glow-strong);
}

/* --- Meanings ----------------------------------- */
.meanings-container {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
  margin-bottom: 2rem;
}

.meaning-block {
  background: var(--surface-card);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.4rem 1.6rem;
  transition: border-color var(--transition);
}

.meaning-block:hover {
  border-color: rgba(0, 255, 136, 0.28);
}

.part-of-speech {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  font-style: italic;
  color: var(--black);
  background: var(--green-dim);
  padding: 3px 10px;
  border-radius: 999px;
  margin-bottom: 1rem;
  letter-spacing: 0.04em;
  font-weight: 700;
}

.definitions-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.definition-item {
  display: flex;
  gap: 0.85rem;
  align-items: flex-start;
}

.def-number {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--green);
  opacity: 0.6;
  min-width: 1.5rem;
  padding-top: 3px;
  font-weight: 700;
}

.def-content {
  flex: 1;
}

.definition-text {
  font-size: 0.97rem;
  color: var(--text-primary);
  line-height: 1.65;
}

.example-text {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--text-secondary);
  margin-top: 0.4rem;
  padding-left: 0.75rem;
  border-left: 2px solid var(--border);
  line-height: 1.55;
  font-style: italic;
}

/* --- Synonyms ----------------------------------- */
.synonyms-section {
  margin-bottom: 2rem;
}

.section-label {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: 0.85rem;
}

.synonyms-list {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.synonym-tag {
  background: none;
  border: 1px solid var(--border);
  border-radius: 999px;
  color: var(--green-dim);
  font-family: var(--font-mono);
  font-size: 0.78rem;
  padding: 0.3rem 0.85rem;
  cursor: pointer;
  transition: border-color var(--transition), color var(--transition), box-shadow var(--transition);
}

.synonym-tag:hover {
  border-color: var(--green);
  color: var(--green);
  box-shadow: 0 0 10px var(--green-glow);
}

/* --- Source ------------------------------------- */
.source-section {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--border);
  font-family: var(--font-mono);
  font-size: 0.72rem;
}

.source-label {
  color: var(--text-muted);
}

.source-link {
  color: var(--green-dim);
  text-decoration: none;
  word-break: break-all;
  transition: color var(--transition);
}

.source-link:hover {
  color: var(--green);
  text-decoration: underline;
}

/* --- Footer ------------------------------------- */
.site-footer {
  position: relative;
  z-index: 10;
  text-align: center;
  padding: 1.25rem 1rem;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--text-muted);
  border-top: 1px solid var(--border);
  letter-spacing: 0.03em;
}

.footer-author {
  color: var(--green-dim);
}

.site-footer a {
  color: var(--green-dim);
  text-decoration: none;
}

.site-footer a:hover {
  color: var(--green);
}

/* --- Responsive --------------------------------- */
@media (max-width: 560px) {
  .word-header {
    flex-direction: column;
    align-items: flex-start;
  }

  .meaning-block {
    padding: 1rem 1.1rem;
  }
}