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

:root {
  --bg: #F4EFFE;
  --surface: #FFFFFF;
  --surface2: #EDE6FF;
  --border: #DDD4F8;
  --mint: #6DD4A0;
  --mint-hover: #58C48E;
  --lavender: #A882E0;
  --lavender-light: #C8ADFF;
  --text: #3D3460;
  --text-muted: #6155A0;
  --error: #F47C9C;
  --radius: 20px;
  --radius-sm: 14px;
  --radius-pill: 999px;
  --shadow: 0 6px 24px rgba(168, 130, 224, 0.18);
  --shadow-sm: 0 3px 12px rgba(168, 130, 224, 0.12);
}

body {
  background: var(--bg);
  color: var(--text);
  font-family: 'Nunito', -apple-system, BlinkMacSystemFont, sans-serif;
  font-size: 16px;
  line-height: 1.6;
  min-height: 100dvh;
  padding: 32px 16px 56px;
}

.container {
  max-width: 600px;
  margin: 0 auto;
}

/* --- Header --- */
header {
  text-align: center;
  margin-bottom: 36px;
}

.logo {
  width: 110px;
  height: auto;
  display: block;
  margin: 0 auto 8px;
  filter: drop-shadow(0 4px 12px rgba(168, 130, 224, 0.25));
}

h1 {
  font-size: clamp(1.9rem, 5vw, 2.6rem);
  font-weight: 800;
  letter-spacing: -0.5px;
  background: linear-gradient(135deg, var(--mint) 0%, var(--lavender) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  line-height: 1.2;
}

.subtitle {
  color: var(--text-muted);
  margin-top: 6px;
  font-size: 0.95rem;
  font-weight: 500;
}

/* --- Search card --- */
.search-card {
  background: var(--surface);
  border: 2px solid var(--border);
  border-radius: var(--radius);
  padding: 20px;
  display: flex;
  flex-direction: column;
  gap: 14px;
  box-shadow: var(--shadow);
}

/* Type toggle */
.type-toggle {
  display: flex;
  gap: 8px;
  background: var(--surface2);
  border-radius: var(--radius-pill);
  padding: 5px;
}

.type-btn {
  flex: 1;
  padding: 9px 0;
  border: none;
  border-radius: var(--radius-pill);
  background: transparent;
  color: var(--text-muted);
  font-family: inherit;
  font-size: 0.9rem;
  font-weight: 700;
  cursor: pointer;
  touch-action: manipulation;
  transition: background 0.2s, color 0.2s, box-shadow 0.2s, transform 0.15s;
  min-height: 44px;
}

.type-btn:focus-visible {
  outline: 3px solid var(--lavender);
  outline-offset: 2px;
}

.type-btn.active {
  background: linear-gradient(135deg, var(--mint) 0%, var(--lavender) 100%);
  color: #fff;
  box-shadow: 0 3px 10px rgba(168, 130, 224, 0.35);
}

.type-btn:not(.active):hover {
  color: var(--lavender);
  background: rgba(168, 130, 224, 0.1);
}

.type-btn:active {
  transform: scale(0.97);
}

/* Search row */
.search-row {
  display: flex;
  gap: 10px;
}

#search-input {
  flex: 1;
  min-width: 0;
  padding: 12px 16px;
  background: var(--surface2);
  border: 2px solid transparent;
  border-radius: var(--radius-sm);
  color: var(--text);
  font-family: inherit;
  font-size: 1rem;
  font-weight: 500;
  outline: none;
  transition: border-color 0.2s, box-shadow 0.2s;
  min-height: 48px;
}

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

#search-input:focus {
  border-color: var(--lavender-light);
  box-shadow: 0 0 0 3px rgba(168, 130, 224, 0.15);
}

#submit-btn {
  padding: 12px 22px;
  background: linear-gradient(135deg, var(--mint) 0%, var(--lavender) 100%);
  border: none;
  border-radius: var(--radius-sm);
  color: #fff;
  font-family: inherit;
  font-size: 0.95rem;
  font-weight: 800;
  cursor: pointer;
  touch-action: manipulation;
  display: flex;
  align-items: center;
  gap: 8px;
  transition: opacity 0.2s, transform 0.15s, box-shadow 0.2s;
  min-height: 48px;
  white-space: nowrap;
  box-shadow: 0 4px 14px rgba(109, 212, 160, 0.4);
}

#submit-btn:focus-visible {
  outline: 3px solid var(--lavender);
  outline-offset: 3px;
}

#submit-btn:hover:not(:disabled) {
  opacity: 0.92;
  transform: translateY(-1px);
  box-shadow: 0 6px 18px rgba(109, 212, 160, 0.45);
}

#submit-btn:active:not(:disabled) {
  transform: scale(0.97) translateY(0);
}

#submit-btn:disabled {
  opacity: 0.65;
  cursor: not-allowed;
}

/* Spinner */
.spinner {
  display: none;
  width: 16px;
  height: 16px;
  border: 2.5px solid rgba(255,255,255,0.35);
  border-top-color: #fff;
  border-radius: 50%;
  animation: spin 0.7s linear infinite;
  flex-shrink: 0;
}

body.loading .spinner  { display: block; }
body.loading .btn-text { display: none; }
body.loading #submit-btn { pointer-events: none; }

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

/* --- Error --- */
.error-msg {
  margin-top: 16px;
  padding: 14px 18px;
  background: color-mix(in srgb, var(--error) 10%, white);
  border: 2px solid color-mix(in srgb, var(--error) 25%, transparent);
  border-radius: var(--radius-sm);
  color: #c0405a;
  font-size: 0.92rem;
  font-weight: 600;
}

/* --- Result card --- */
.result-card {
  margin-top: 20px;
  background: var(--surface);
  border: 2px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
  animation: popIn 0.25s cubic-bezier(0.34, 1.56, 0.64, 1);
}

@keyframes popIn {
  from { opacity: 0; transform: scale(0.96) translateY(8px); }
  to   { opacity: 1; transform: scale(1) translateY(0); }
}

.result-header {
  padding: 16px 20px 14px;
  border-bottom: 2px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  flex-wrap: wrap;
  background: linear-gradient(135deg, rgba(109,212,160,0.06) 0%, rgba(168,130,224,0.06) 100%);
}

.result-meta {
  display: flex;
  align-items: baseline;
  gap: 8px;
  flex-wrap: wrap;
}

.result-title {
  font-size: 1.05rem;
  font-weight: 800;
  color: var(--text);
}

.result-year {
  color: var(--text-muted);
  font-size: 0.88rem;
  font-weight: 600;
}

.level-label {
  font-size: 0.72rem;
  font-weight: 800;
  color: #fff;
  text-transform: uppercase;
  letter-spacing: 0.07em;
  background: linear-gradient(135deg, var(--mint) 0%, var(--lavender) 100%);
  padding: 4px 12px;
  border-radius: var(--radius-pill);
  white-space: nowrap;
  box-shadow: 0 2px 8px rgba(168, 130, 224, 0.3);
}

/* Summary panels */
.result-body {
  padding: 22px 22px 16px;
}

.summary-panel {
  font-size: 0.97rem;
  line-height: 1.8;
  color: var(--text);
  font-weight: 500;
  animation: fadeSlideIn 0.2s ease;
}

.summary-panel[hidden] {
  display: none;
}

.summary-panel.one-line {
  font-size: 1.35rem;
  font-weight: 800;
  line-height: 1.5;
  color: var(--text);
  letter-spacing: -0.01em;
  text-align: center;
  padding: 8px 0;
}

/* Full summary paragraphs */
#panel-full p + p {
  margin-top: 14px;
}

@keyframes fadeSlideIn {
  from { opacity: 0; transform: translateY(5px); }
  to   { opacity: 1; transform: translateY(0); }
}

/* Footer nav buttons */
.result-footer {
  padding: 12px 20px 18px;
  display: flex;
}

.nav-btn {
  padding: 8px 18px;
  background: var(--surface2);
  border: 2px solid var(--border);
  border-radius: var(--radius-pill);
  color: var(--text-muted);
  font-family: inherit;
  font-size: 0.88rem;
  font-weight: 700;
  cursor: pointer;
  touch-action: manipulation;
  transition: border-color 0.2s, color 0.2s, background 0.2s, transform 0.15s;
  min-height: 44px;
}

.nav-btn:focus-visible {
  outline: 3px solid var(--lavender);
  outline-offset: 2px;
}

.nav-btn:hover {
  border-color: var(--lavender);
  color: var(--lavender);
  background: rgba(168, 130, 224, 0.08);
}

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

#shorter-btn {
  margin-left: auto;
}

/* Visually hidden (screen-reader only) */
.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;
}

/* Reduced motion */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
  }
}

/* --- Desktop --- */
@media (min-width: 640px) {
  body {
    padding: 52px 24px 80px;
  }

  header {
    margin-bottom: 44px;
  }

  .logo {
    width: 130px;
  }
}