/* ───────────── RESET & TOKENS ───────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --accent: #5865F2;
  --accent-rgb: 88, 101, 242;
  --accent-glow: rgba(88, 101, 242, .25);
  --accent-soft: rgba(88, 101, 242, .08);
  --bg: #0a0a0c;
  --bg-card: rgba(255,255,255,.03);
  --bg-card-hover: rgba(255,255,255,.06);
  --bg-input: rgba(255,255,255,.04);
  --border: rgba(255,255,255,.08);
  --border-focus: rgba(88,101,242,.5);
  --text-primary: #e8e8ed;
  --text-secondary: rgba(255,255,255,.45);
  --text-tertiary: rgba(255,255,255,.25);
  --dot-base: rgba(255,255,255,.08);
  --surface-pass: rgba(72, 199, 142, .1);
  --surface-fail: rgba(237, 66, 69, .1);
  --color-pass: #48c78e;
  --color-fail: #ed4245;
  --color-error: #ed4245;
  --grade-a: #48c78e;
  --grade-b: #5865F2;
  --grade-c: #fee75c;
  --grade-d: #faa61a;
  --grade-e: #f47b67;
  --grade-f: #ed4245;
  --shadow: 0 1px 2px rgba(0,0,0,.3), 0 4px 16px rgba(0,0,0,.25);
}

[data-theme="light"] {
  --bg: #f5f5f7;
  --bg-card: rgba(255,255,255,.7);
  --bg-card-hover: rgba(255,255,255,.9);
  --bg-input: rgba(0,0,0,.03);
  --border: rgba(0,0,0,.08);
  --border-focus: rgba(88,101,242,.5);
  --text-primary: #1d1d1f;
  --text-secondary: rgba(0,0,0,.45);
  --text-tertiary: rgba(0,0,0,.2);
  --dot-base: rgba(0,0,0,.08);
  --surface-pass: rgba(72, 199, 142, .08);
  --surface-fail: rgba(237, 66, 69, .08);
  --shadow: 0 1px 3px rgba(0,0,0,.06), 0 4px 16px rgba(0,0,0,.04);
}

/* ───────────── GLOBAL ───────────── */
html { font-size: 16px; scroll-behavior: smooth; }

body {
  font-family: 'Inter', 'Noto Sans Khmer', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  background: var(--bg);
  color: var(--text-primary);
  min-height: 100dvh;
  display: flex;
  flex-direction: column;
  align-items: center;
  transition: background .4s ease, color .4s ease;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

/* ───────────── NEON BACKGROUND ───────────── */
.neon-bg {
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  width: 100%;
  height: 100%;
  background: var(--bg);
  overflow: hidden;
  transition: background .4s ease;
}

.neon-bg::before,
.neon-bg::after {
  content: '';
  position: absolute;
  width: 80vw;
  height: 80vh;
  border-radius: 50%;
  filter: blur(100px);
  opacity: 0.15;
  animation: neonFloat 20s ease-in-out infinite alternate;
}

.neon-bg::before {
  top: -20%;
  left: -10%;
  background: radial-gradient(circle, var(--accent) 0%, transparent 70%);
}

.neon-bg::after {
  bottom: -20%;
  right: -10%;
  background: radial-gradient(circle, #f47b67 0%, transparent 70%);
  animation-delay: -10s;
}

[data-theme="light"] .neon-bg::before,
[data-theme="light"] .neon-bg::after {
  opacity: 0.25;
}

@keyframes neonFloat {
  0% { transform: translate(0, 0) scale(1); }
  50% { transform: translate(5%, 10%) scale(1.1); }
  100% { transform: translate(-5%, -5%) scale(0.9); }
}

.topbar {
  position: sticky;
  top: 0;
  z-index: 100;
  width: 100%;
  backdrop-filter: blur(20px) saturate(180%);
  -webkit-backdrop-filter: blur(20px) saturate(180%);
  border-bottom: 1px solid var(--border);
  padding: 16px 24px;
}

.topbar-container {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.topbar-brand {
  display: flex;
  align-items: center;
  gap: 8px;
}

.topbar-brand h1 {
  font-size: 1.1rem;
  font-weight: 700;
  letter-spacing: -.02em;
  color: var(--text-primary);
}

.topbar-brand h1 span {
  color: var(--accent);
}

.topbar-brand .tag {
  font-family: 'JetBrains Mono', monospace;
  font-size: .625rem;
  font-weight: 500;
  color: var(--accent);
  background: var(--accent-soft);
  padding: 2px 8px;
  border-radius: 100px;
  letter-spacing: .04em;
  text-transform: uppercase;
}

.topbar-controls {
  display: flex;
  align-items: center;
  gap: 6px;
}

.topbar-btn {
  background: var(--bg-input);
  border: 1px solid var(--border);
  color: var(--text-secondary);
  height: 36px;
  min-width: 44px;
  border-radius: 10px;
  cursor: pointer;
  display: flex; align-items: center; justify-content: center;
  transition: all .2s ease;
  font-size: 1rem;
  padding: 0 12px;
}

.topbar-btn:hover {
  background: var(--bg-card-hover);
  border-color: var(--border-focus);
  color: var(--text-primary);
}

#theme-toggle {
  width: 36px;
}

#lang-toggle {
  font-family: 'JetBrains Mono', monospace;
  font-size: .65rem;
  font-weight: 600;
  letter-spacing: .03em;
  padding: 0 12px;
  gap: 4px;
  color: var(--text-secondary);
  white-space: nowrap;
}

#lang-toggle .lang-active {
  color: var(--accent);
}

#lang-toggle .lang-sep {
  opacity: .3;
  margin: 0 2px;
}

/* ───────────── MAIN ───────────── */
main {
  position: relative;
  z-index: 1;
  width: 100%;
  max-width: 720px;
  padding: 32px 24px 80px;
  display: flex;
  flex-direction: column;
  gap: 24px;
}

/* ───────────── HERO ───────────── */
.hero {
  text-align: center;
  padding: 48px 0 24px;
}

.hero h2 {
  font-size: 2.8rem;
  font-weight: 800;
  letter-spacing: -.04em;
  line-height: 1;
  margin-bottom: 12px;
}

.hero h2 .accent { color: var(--accent); }

.hero p {
  color: var(--text-secondary);
  font-size: .95rem;
  line-height: 1.6;
  max-width: 460px;
  margin: 0 auto;
}

/* ───────────── CARD ───────────── */
.card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 28px;
  box-shadow: var(--shadow);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  transition: background .3s ease, border-color .3s ease;
}

.card:hover {
  background: var(--bg-card-hover);
}

.card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 24px;
  flex-wrap: wrap;
  gap: 12px;
}

.card-header h3 {
  font-size: 1rem;
  font-weight: 600;
  letter-spacing: -.01em;
  display: flex;
  align-items: center;
  gap: 8px;
}

.card-header h3 .icon {
  font-size: 1.1rem;
}

/* ───────────── TRACK TOGGLE ───────────── */
.track-toggle {
  display: flex;
  background: var(--bg-input);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 3px;
  gap: 2px;
}

.track-btn {
  font-family: 'Inter', 'Noto Sans Khmer', sans-serif;
  font-size: .75rem;
  font-weight: 500;
  padding: 6px 14px;
  border: none;
  border-radius: 8px;
  background: transparent;
  color: var(--text-secondary);
  cursor: pointer;
  transition: all .2s ease;
  white-space: nowrap;
}

.track-btn.active {
  background: var(--accent);
  color: #fff;
  box-shadow: 0 1px 4px var(--accent-glow);
}

.track-btn:not(.active):hover {
  color: var(--text-primary);
  background: var(--bg-card-hover);
}

/* ───────────── SUBJECT GRID ───────────── */
.subjects-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}

.subject-field {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.subject-field:last-child:nth-child(odd) {
  grid-column: 1 / -1;
  max-width: calc(50% - 6px);
}

.subject-field label {
  font-size: .75rem;
  font-weight: 500;
  color: var(--text-secondary);
  letter-spacing: .02em;
  transition: color .2s ease;
}

.subject-field:focus-within label {
  color: var(--accent);
}

.subject-field input {
  font-family: 'JetBrains Mono', monospace;
  font-size: .95rem;
  font-weight: 500;
  color: var(--text-primary);
  background: var(--bg-input);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 12px 14px;
  outline: none;
  transition: all .2s ease;
  width: 100%;
}

.subject-field input::placeholder {
  color: var(--text-tertiary);
  font-weight: 400;
}

.subject-field input:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-glow);
  background: var(--bg-card-hover);
}

.subject-field input:hover:not(:focus) {
  border-color: rgba(255,255,255,.15);
}

[data-theme="light"] .subject-field input:hover:not(:focus) {
  border-color: rgba(0,0,0,.15);
}

/* ── Input error state ── */
.subject-field.error label {
  color: var(--color-error) !important;
}

.subject-field.error input {
  border-color: var(--color-error) !important;
  box-shadow: 0 0 0 3px rgba(237, 66, 69, .15) !important;
}

.subject-field .error-msg {
  font-size: .65rem;
  color: var(--color-error);
  font-weight: 500;
  min-height: 14px;
  opacity: 0;
  transform: translateY(-4px);
  transition: all .2s ease;
}

.subject-field.error .error-msg {
  opacity: 1;
  transform: translateY(0);
}

@keyframes fieldShake {
  0%, 100% { transform: translateX(0); }
  15% { transform: translateX(-6px); }
  30% { transform: translateX(5px); }
  45% { transform: translateX(-4px); }
  60% { transform: translateX(3px); }
  75% { transform: translateX(-2px); }
  90% { transform: translateX(1px); }
}

.subject-field.shake {
  animation: fieldShake .5s ease;
}

/* ───────────── CALCULATE BTN ───────────── */
.calc-btn-wrap {
  margin-top: 8px;
}

#calculate-btn {
  width: 100%;
  font-family: 'Inter', 'Noto Sans Khmer', sans-serif;
  font-size: .9rem;
  font-weight: 600;
  letter-spacing: -.01em;
  color: #fff;
  background: var(--accent);
  border: none;
  border-radius: 12px;
  padding: 14px 24px;
  cursor: pointer;
  transition: all .2s ease;
  position: relative;
  overflow: hidden;
}

#calculate-btn::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(255,255,255,.15) 0%, transparent 50%);
  opacity: 0;
  transition: opacity .2s ease;
}

#calculate-btn:hover {
  transform: translateY(-1px);
  box-shadow: 0 4px 20px var(--accent-glow), 0 0 0 1px var(--accent);
}

#calculate-btn:hover::before {
  opacity: 1;
}

#calculate-btn:active {
  transform: translateY(0) scale(.99);
}

/* ───────────── RESULT CARD ───────────── */
.result-card {
  overflow: hidden;
  position: relative;
}

.result-card.hidden {
  display: none;
}

.result-card.show {
  animation: resultSlam .7s cubic-bezier(.16, 1, .3, 1) forwards;
}

@keyframes resultSlam {
  0% { opacity: 0; transform: translateY(60px) scale(.85); filter: blur(6px); }
  50% { transform: translateY(-8px) scale(1.02); filter: blur(0); }
  70% { transform: translateY(3px) scale(.995); }
  100% { opacity: 1; transform: translateY(0) scale(1); }
}

.result-card.show::before {
  content: '';
  position: absolute;
  inset: -2px;
  border-radius: 18px;
  z-index: -1;
  animation: borderGlow 2s ease-out forwards;
  pointer-events: none;
}

@keyframes borderGlow {
  0% { box-shadow: 0 0 30px 8px var(--accent-glow), inset 0 0 30px 4px var(--accent-glow); }
  100% { box-shadow: 0 0 0 0 transparent, inset 0 0 0 0 transparent; }
}

.result-inner {
  display: flex;
  align-items: flex-start;
  gap: 28px;
}

.grade-display {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: flex-start;
  flex-shrink: 0;
  position: relative;
}

.grade-letter {
  font-family: 'Inter', sans-serif;
  font-size: 5.5rem;
  font-weight: 900;
  letter-spacing: -.06em;
  line-height: 1;
  transition: color .3s ease;
  position: relative;
  z-index: 1;
}

.grade-letter.animate {
  animation: gradeRevealBig .6s cubic-bezier(.16, 1, .3, 1) forwards;
}

@keyframes gradeRevealBig {
  0% { opacity: 0; transform: scale(0); }
  40% { opacity: 1; transform: scale(1.1); }
  60% { transform: scale(0.95); }
  80% { transform: scale(1.02); }
  100% { opacity: 1; transform: scale(1); }
}

.grade-status {
  font-family: 'JetBrains Mono', 'Noto Sans Khmer', monospace;
  font-size: .7rem;
  font-weight: 600;
  letter-spacing: .1em;
  text-transform: uppercase;
  padding: 4px 12px;
  border-radius: 100px;
  margin-top: 8px;
  position: relative;
  z-index: 1;
}

.grade-status.pass {
  background: var(--surface-pass);
  color: var(--color-pass);
}

.grade-status.fail {
  background: var(--surface-fail);
  color: var(--color-fail);
}

.result-details {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.score-row {
  display: flex;
  align-items: baseline;
  gap: 8px;
}

.score-value {
  font-family: 'JetBrains Mono', monospace;
  font-size: 2rem;
  font-weight: 700;
  letter-spacing: -.02em;
}

.score-max {
  font-family: 'JetBrains Mono', monospace;
  font-size: 1rem;
  color: var(--text-secondary);
  font-weight: 400;
}

.progress-track {
  width: 100%;
  height: 6px;
  background: var(--bg-input);
  border-radius: 100px;
  overflow: hidden;
  border: 1px solid var(--border);
}

.progress-fill {
  height: 100%;
  border-radius: 100px;
  transition: width .8s cubic-bezier(.16, 1, .3, 1), background .3s ease;
  width: 0;
}

.percentage-text {
  font-family: 'JetBrains Mono', monospace;
  font-size: .75rem;
  color: var(--text-secondary);
}

.grade-range-text {
  font-size: .8rem;
  color: var(--text-secondary);
  line-height: 1.5;
}

.grade-range-text strong {
  color: var(--text-primary);
  font-weight: 600;
}

/* ───────────── SPARKLE PARTICLES ───────────── */
.sparkle-container {
  position: absolute;
  inset: 0;
  pointer-events: none;
  overflow: hidden;
  z-index: 10;
}

.sparkle {
  position: absolute;
  width: 4px;
  height: 4px;
  border-radius: 50%;
  animation: sparkleFly 1s ease-out forwards;
}

@keyframes sparkleFly {
  0% { opacity: 1; transform: translate(0, 0) scale(1); }
  100% { opacity: 0; transform: translate(var(--sx), var(--sy)) scale(0); }
}

/* ───────────── GRADE TABLE ───────────── */
.grade-table-card h3 {
  font-size: .85rem;
  font-weight: 600;
  margin-bottom: 16px;
  color: var(--text-secondary);
  display: flex;
  align-items: center;
  gap: 8px;
}

.grade-table {
  width: 100%;
  border-collapse: collapse;
}

.grade-table th,
.grade-table td {
  padding: 10px 14px;
  text-align: left;
  font-size: .8rem;
  border-bottom: 1px solid var(--border);
}

.grade-table th {
  color: var(--text-tertiary);
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: .06em;
  font-size: .65rem;
}

.grade-table tr:last-child td {
  border-bottom: none;
}

.grade-table td:first-child {
  font-family: 'JetBrains Mono', monospace;
  font-weight: 600;
}

.grade-table td:nth-child(2) {
  font-family: 'JetBrains Mono', monospace;
  color: var(--text-secondary);
  font-size: .75rem;
}

.grade-table .current-row {
  background: var(--accent-soft);
}

.grade-table .current-row td:first-child {
  color: var(--accent);
}

.badge-pass, .badge-fail {
  font-family: 'JetBrains Mono', 'Noto Sans Khmer', monospace;
  font-size: .6rem;
  font-weight: 600;
  letter-spacing: .05em;
  padding: 2px 8px;
  border-radius: 100px;
  text-transform: uppercase;
}

.badge-pass {
  background: var(--surface-pass);
  color: var(--color-pass);
}

.badge-fail {
  background: var(--surface-fail);
  color: var(--color-fail);
}

.badge-neutral {
  font-family: 'JetBrains Mono', 'Noto Sans Khmer', monospace;
  font-size: .6rem;
  font-weight: 600;
  letter-spacing: .05em;
  padding: 2px 8px;
  border-radius: 100px;
  text-transform: uppercase;
  background: var(--accent-soft);
  color: var(--accent);
}

/* ───────────── FOOTER ───────────── */
.footer {
  position: relative;
  z-index: 1;
  width: 100%;
  max-width: 720px;
  text-align: center;
  padding: 20px 24px 32px;
  color: var(--text-tertiary);
  font-size: .75rem;
}

.footer a {
  color: var(--accent);
  text-decoration: none;
}

@media (max-width: 600px) {
  .hero h2 { font-size: 2rem; }

  /* .subjects-grid { grid-template-columns: 1fr; } removed to keep 2 columns */

  .card { padding: 16px; }
  main { padding: 16px 12px 60px; }
  .topbar { padding: 12px 16px; }

  .modal-body {
    flex-direction: column;
    gap: 16px;
  }

  /* Fluid scaling to keep layout intact on small screens */
  .card-header {
    flex-wrap: nowrap;
    gap: clamp(4px, 2vw, 12px);
  }
  .card-header h3 {
    font-size: clamp(0.8rem, 3.5vw, 1rem);
  }
  .track-btn {
    padding: clamp(4px, 1.5vw, 6px) clamp(8px, 2.5vw, 14px);
    font-size: clamp(0.65rem, 2.5vw, 0.75rem);
  }
  
  .result-inner {
    gap: clamp(12px, 4vw, 28px);
    flex-direction: row;
    flex-wrap: nowrap;
    align-items: flex-start;
  }
  .grade-letter {
    font-size: clamp(2.5rem, 10vw, 5.5rem);
  }
  .score-value {
    font-size: clamp(1.4rem, 6vw, 2rem);
  }
  .percentage-text, .grade-range-text {
    font-size: clamp(0.7rem, 2.5vw, 0.95rem);
  }
  .share-container {
    gap: clamp(6px, 2vw, 12px) !important;
  }
  .share-btn {
    padding: clamp(8px, 2vw, 10px) clamp(12px, 3vw, 20px);
    font-size: clamp(0.75rem, 2.5vw, 0.85rem);
  }
  .grade-table th, .grade-table td {
    padding: 6px 4px;
    font-size: clamp(0.6rem, 2.5vw, 0.75rem);
  }
  .grade-badge {
    padding: 2px 4px;
    font-size: clamp(0.5rem, 2vw, 0.65rem);
    min-width: 16px;
    margin-left: 2px;
  }
  .badge-pass, .badge-fail, .badge-neutral {
    font-size: clamp(0.55rem, 2vw, 0.7rem);
    min-width: 35px !important;
    padding: 2px 4px;
  }
}

/* ───────────── MISC ───────────── */
::selection {
  background: var(--accent);
  color: #fff;
}

::-webkit-scrollbar {
  width: 6px;
}

::-webkit-scrollbar-track {
  background: transparent;
}

::-webkit-scrollbar-thumb {
  background: var(--border);
  border-radius: 100px;
}

/* ───────────── SHARE UI ───────────── */
.share-container {
  margin-top: 24px;
  position: relative;
  text-align: center;
}

.share-btn {
  font-family: 'Inter', 'Noto Sans Khmer', sans-serif;
  font-size: .85rem;
  font-weight: 600;
  color: var(--text-primary);
  background: var(--bg-input);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 10px 20px;
  cursor: pointer;
  transition: all .2s ease;
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

.share-btn:hover {
  background: var(--bg-card-hover);
  border-color: var(--border-focus);
}

/* ───────────── MODALS ───────────── */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.6);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
  opacity: 1;
  visibility: visible;
  transition: all 0.3s ease;
}

.modal-overlay.hidden {
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
}

.modal-content {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 20px;
  padding: 32px;
  width: 100%;
  max-width: 900px;
  position: relative;
  box-shadow: 0 10px 40px rgba(0,0,0,0.5);
  transform: scale(1);
  transition: transform 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

.modal-content.small {
  max-width: 480px;
}

.modal-overlay.hidden .modal-content {
  transform: scale(0.95);
}

.modal-close {
  position: absolute;
  top: 16px;
  right: 16px;
  background: var(--bg-input);
  border: none;
  color: var(--text-secondary);
  width: 32px;
  height: 32px;
  border-radius: 50%;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.2s ease;
  z-index: 10;
}

.modal-close:hover {
  background: var(--bg-card-hover);
  color: var(--text-primary);
}

.modal-header {
  margin-bottom: 24px;
}

.modal-header h3 {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--text-primary);
}

.modal-body {
  display: flex;
  gap: 32px;
  align-items: stretch;
}

.modal-preview {
  flex: 1.5;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 12px;
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 16px;
}

.modal-preview img {
  width: 100%;
  height: auto;
  border-radius: 8px;
  box-shadow: var(--shadow);
}

.modal-actions {
  flex: 1;
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 12px;
}

.share-btn.large {
  padding: 14px 24px;
  font-size: 1rem;
  justify-content: center;
}

/* ── Saved Scores Modal Additions ── */
.input-group {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin-bottom: 24px;
}
.input-group label {
  font-size: 0.85rem;
  color: var(--text-secondary);
  font-weight: 500;
}
.input-group input {
  background: var(--bg-input);
  border: 1px solid var(--border);
  color: var(--text-primary);
  padding: 12px 16px;
  border-radius: 12px;
  font-family: 'Inter', 'Noto Sans Khmer', sans-serif;
  font-size: 1rem;
  outline: none;
  transition: border-color 0.2s;
}
.input-group input:focus {
  border-color: var(--border-focus);
}

.saved-scores-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
  max-height: 400px;
  overflow-y: auto;
  padding-right: 8px;
}

.saved-score-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px;
  background: var(--bg-input);
  border: 1px solid var(--border);
  border-radius: 12px;
  transition: all 0.2s ease;
  cursor: pointer;
}

.saved-score-item:hover {
  background: var(--bg-card-hover);
  border-color: var(--border-focus);
}

.saved-score-info {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.saved-score-name {
  font-family: 'Inter', 'Noto Sans Khmer', sans-serif;
  font-weight: 600;
  font-size: 1rem;
  color: var(--text-primary);
}

.saved-score-details {
  font-size: 0.8rem;
  color: var(--text-tertiary);
}

.btn-delete {
  background: transparent;
  border: none;
  color: var(--text-secondary);
  cursor: pointer;
  padding: 8px;
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.2s;
}
.btn-delete:hover {
  background: rgba(255, 59, 48, 0.1);
  color: #ff3b30;
}

.empty-state {
  text-align: center;
  padding: 40px 20px;
  color: var(--text-tertiary);
  font-size: 0.9rem;
}

/* ───────────── COUNTDOWN TIMER ───────────── */
.countdown-card h3 {
  font-size: .85rem;
  font-weight: 600;
  margin-bottom: 20px;
  color: var(--text-secondary);
  display: flex;
  align-items: center;
  gap: 8px;
}

.countdown-container {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 20px;
  background: var(--bg-input);
  padding: 24px 16px;
  border-radius: 12px;
  border: 1px solid var(--border);
}
.time-box {
  display: flex;
  flex-direction: column;
  align-items: center;
  min-width: 60px;
}
.time-value {
  font-family: 'JetBrains Mono', monospace;
  font-size: 2rem;
  font-weight: 700;
  color: var(--accent);
  text-shadow: 0 0 10px var(--accent-glow);
}
.time-label {
  font-size: 0.75rem;
  text-transform: uppercase;
  color: var(--text-secondary);
  font-weight: 600;
  margin-top: 4px;
  letter-spacing: 0.5px;
}
.time-colon {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--text-secondary);
  margin-bottom: 20px;
  animation: blink 1s step-end infinite;
}
@keyframes blink {
  0%, 100% { opacity: 1; }
  50% { opacity: 0; }
}

@media (max-width: 480px) {
  .countdown-container {
    gap: 8px;
    padding: 16px 8px;
  }
  .time-value { font-size: 1.5rem; }
  .time-box { min-width: 50px; }
  .time-colon { font-size: 1.2rem; }
}

/* Global utility */
.hidden {
  display: none !important;
}

/* Grade Badge */
.grade-badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.7rem;
  font-weight: 700;
  padding: 2px 6px;
  border-radius: 6px;
  margin-left: 8px;
  min-width: 20px;
  line-height: 1;
  border: 1px solid rgba(255, 255, 255, 0.05);
}

/* ───────────── TOAST POPUP ───────────── */
.toast-popup {
  position: fixed;
  bottom: 24px;
  right: 24px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 16px 20px;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.4);
  display: flex;
  align-items: flex-start;
  gap: 16px;
  z-index: 9999;
  transform: translateY(0);
  opacity: 1;
  transition: all 0.4s cubic-bezier(0.16, 1, 0.3, 1);
  max-width: 340px;
}

.toast-popup.hidden {
  transform: translateY(20px);
  opacity: 0;
  pointer-events: none;
  display: flex !important; /* Keep display flex to allow transition, hidden handles opacity/transform */
}

.toast-content {
  display: flex;
  align-items: center;
  gap: 12px;
}

.toast-icon {
  font-size: 1.5rem;
  background: var(--accent-soft);
  color: var(--accent);
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 10px;
}

.toast-text {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.toast-text p {
  margin: 0;
  font-family: 'Inter', 'Noto Sans Khmer', sans-serif;
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--text-primary);
  line-height: 1.3;
}

.toast-link {
  font-family: 'Inter', 'Noto Sans Khmer', sans-serif;
  font-size: 0.8rem;
  color: var(--accent);
  text-decoration: none;
  font-weight: 500;
  transition: color 0.2s;
}

.toast-link:hover {
  color: #fff;
  text-decoration: underline;
}

.toast-close {
  background: transparent;
  border: none;
  color: var(--text-tertiary);
  cursor: pointer;
  padding: 4px;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: color 0.2s;
}

.toast-close:hover {
  color: var(--text-primary);
}

@media (max-width: 600px) {
  .toast-popup {
    bottom: 16px;
    right: 16px;
    left: 16px;
    max-width: none;
  }
}