:root {
  --bg: #080c10;            /* The original dark black-blue background */
  --surface: #0f1520;       /* Dark card surface */
  --surface2: #162033;      /* Dark slate-blue for options and inputs */
  --border: #1f2d42;        /* Dark slate-grey borders */
  --accent: #064EA6;        /* The original clinical blue as the buddy accent color */
  --accent2: #064EA6;       /* The clinical blue accent */
  --gold: #f4a261;
  --text: #e8edf4;          /* Standard light off-white text */
  --muted: #6b7f99;         /* Standard muted grey-blue */
  --success: #2ec4b6;       /* Standard teal success color */
  --radius: 16px;
  --radius-lg: 24px;
  --font-serif: 'DM Serif Display', Georgia, serif;
  --font-sans: 'DM Sans', system-ui, sans-serif;
  --font-mono: 'DM Mono', monospace;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-sans);
  background: var(--bg);
  color: var(--text);
  min-height: 100dvh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: flex-start;
  overflow-x: hidden;
  padding: 1.5rem 1.5rem 5rem;
  padding-top: calc(1.5rem + env(safe-area-inset-top, 0px));
}

body::before {
  content: '';
  position: fixed;
  inset: 0;
  background:
    radial-gradient(ellipse 60% 50% at 20% 80%, rgba(6, 78, 166, .1) 0%, transparent 70%),
    radial-gradient(ellipse 50% 40% at 80% 20%, rgba(15, 69, 120, .13) 0%, transparent 70%);
  pointer-events: none;
  z-index: 0;
}

body::after {
  content: '';
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  height: 70px;
  background: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 1200 80' preserveAspectRatio='none'%3E%3Cpolyline points='0,40 100,40 130,40 145,10 155,70 165,5 175,75 185,40 220,40 260,40 290,40 305,30 310,50 315,40 400,40 430,40 445,10 455,70 465,5 475,75 485,40 520,40 600,40 630,40 645,10 655,70 665,5 675,75 685,40 720,40 800,40 830,40 845,10 855,70 865,5 875,75 885,40 920,40 1000,40 1030,40 1045,10 1055,70 1065,5 1075,75 1085,40 1120,40 1200,40' fill='none' stroke='%23064EA6' stroke-width='1.5' stroke-opacity='0.15'/%3E%3C/svg%3E") repeat-x bottom;
  pointer-events: none;
  z-index: 0;
  opacity: .6;
}

#app {
  position: relative;
  z-index: 1;
  width: 100%;
  max-width: 620px;
  padding-top: 1.5rem;
}

/* ── SCREENS ── */
.screen {
  display: none;
}

.screen.active {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
  animation: fadeUp .4s ease both;
}

@keyframes fadeUp {
  from {
    opacity: 0;
    transform: translateY(16px)
  }

  to {
    opacity: 1;
    transform: translateY(0)
  }
}

/* ── TOPBAR ── */
#topbar {
  display: none;
  position: relative;
  z-index: 1;
  width: 100%;
  max-width: 620px;
  padding: 1rem 0 0;
  flex-direction: row;
  align-items: center;
  justify-content: space-between;
  margin-bottom: -.25rem;
}

#topbar.visible {
  display: flex;
}

.tb-user {
  display: flex;
  align-items: center;
  gap: .6rem;
}

.tb-avatar {
  width: 34px;
  height: 34px;
  border-radius: 50%;
  flex-shrink: 0;
  background: linear-gradient(135deg, var(--accent), var(--accent2));
  display: grid;
  place-items: center;
  font-family: var(--font-serif);
  font-size: .85rem;
  color: #fff;
}

.tb-name {
  font-size: .85rem;
  color: var(--text);
  font-weight: 500;
  line-height: 1.2;
}

.tb-college {
  font-size: .7rem;
  color: var(--muted);
}

.tb-signout {
  background: none;
  border: 1px solid var(--border);
  border-radius: 100px;
  padding: .32rem .8rem;
  font-size: .75rem;
  color: var(--muted);
  cursor: pointer;
  font-family: var(--font-sans);
  transition: all .15s;
}

.tb-signout:hover {
  border-color: var(--accent);
  color: var(--accent);
}

/* ── BRAND ── */
.brand {
  display: flex;
  align-items: center;
  gap: .65rem;
}

.brand-icon {
  width: 40px;
  height: 40px;
  background: linear-gradient(135deg, rgba(6, 78, 166, .18), rgba(6, 78, 166, .04));
  border: 1px solid rgba(6, 78, 166, .28);
  border-radius: 11px;
  display: grid;
  place-items: center;
  color: var(--accent2);
}

.brand-name {
  font-family: var(--font-serif);
  font-size: 1.35rem;
  color: var(--text);
  letter-spacing: -.02em;
}

.brand-name em {
  color: var(--accent);
  font-style: italic;
}

/* ── BADGE ── */
.badge {
  display: inline-flex;
  align-items: center;
  gap: .45rem;
  background: rgba(6, 78, 166, .1);
  border: 1px solid rgba(6, 78, 166, .22);
  border-radius: 100px;
  padding: .28rem .75rem;
  font-family: var(--font-mono);
  font-size: .66rem;
  letter-spacing: .08em;
  text-transform: uppercase;
  color: var(--accent2);
}

.badge .dot {
  width: 6px;
  height: 6px;
  background: var(--accent);
  border-radius: 50%;
  animation: pulsedot 1.4s ease-in-out infinite;
}

@keyframes pulsedot {

  0%,
  100% {
    transform: scale(1);
    opacity: 1
  }

  50% {
    transform: scale(1.6);
    opacity: .5
  }
}

/* ── CARD ── */
.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 1.6rem;
  position: relative;
  overflow: hidden;
}

.card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, .07), transparent);
}

.card-title {
  font-family: var(--font-serif);
  font-size: 1.25rem;
  color: var(--text);
  margin-bottom: .2rem;
  letter-spacing: -.01em;
}

.card-sub {
  font-size: .83rem;
  color: var(--muted);
  line-height: 1.55;
}

/* ── FORM ── */
.form-stack {
  display: flex;
  flex-direction: column;
  gap: .85rem;
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: .75rem;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: .35rem;
}

.form-label {
  font-family: var(--font-mono);
  font-size: .65rem;
  text-transform: uppercase;
  letter-spacing: .08em;
  color: var(--muted);
}

.form-input {
  background: var(--surface2);
  border: 1.5px solid var(--border);
  border-radius: 10px;
  padding: .72rem .95rem;
  font-family: var(--font-sans);
  font-size: .88rem;
  color: var(--text);
  outline: none;
  transition: border-color .15s, box-shadow .15s;
  width: 100%;
}

.form-input::placeholder {
  color: var(--muted);
  opacity: .55
}

.form-input:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(6, 78, 166, .1)
}

.form-input.error {
  border-color: var(--accent)
}

.field-error {
  font-size: .73rem;
  color: var(--accent2);
  display: none
}

.field-error.show {
  display: block
}

.pass-wrap {
  position: relative
}

.pass-wrap .form-input {
  padding-right: 2.6rem
}

.pass-toggle {
  position: absolute;
  right: .75rem;
  top: 50%;
  transform: translateY(-50%);
  background: none;
  border: none;
  cursor: pointer;
  color: var(--muted);
  padding: .2rem;
  transition: color .15s
}

.pass-toggle:hover {
  color: var(--text)
}

/* ── BUTTONS ── */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: .5rem;
  padding: .78rem 1.6rem;
  border-radius: 100px;
  font-family: var(--font-sans);
  font-size: .88rem;
  font-weight: 500;
  border: none;
  cursor: pointer;
  transition: all .18s;
  white-space: nowrap;
}

.btn:disabled {
  opacity: .45;
  cursor: not-allowed;
  transform: none !important
}

.btn-primary {
  background: var(--accent);
  color: #fff;
  box-shadow: 0 4px 18px rgba(6, 78, 166, .28);
  width: 100%
}

.btn-primary:hover:not(:disabled) {
  background: var(--accent2);
  transform: translateY(-1px);
  box-shadow: 0 8px 24px rgba(6, 78, 166, .38)
}

.btn-ghost {
  background: transparent;
  color: var(--muted);
  border: 1px solid var(--border)
}

.btn-ghost:hover {
  border-color: var(--accent);
  color: var(--accent)
}

.btn-outline {
  background: transparent;
  color: var(--text);
  border: 1.5px solid var(--border);
  width: 100%
}

.btn-outline:hover {
  border-color: var(--accent);
  color: var(--accent)
}

/* ── DIVIDER ── */
.divider {
  display: flex;
  align-items: center;
  gap: .85rem;
  font-family: var(--font-mono);
  font-size: .65rem;
  text-transform: uppercase;
  letter-spacing: .1em;
  color: var(--muted)
}

.divider::before,
.divider::after {
  content: '';
  flex: 1;
  height: 1px;
  background: var(--border)
}

/* ── AUTH TOGGLE ── */
.auth-toggle {
  text-align: center;
  font-size: .83rem;
  color: var(--muted)
}

.auth-toggle a {
  color: var(--accent2);
  text-decoration: none;
  font-weight: 500;
  cursor: pointer
}

.auth-toggle a:hover {
  text-decoration: underline
}

/* ── ALERT ── */
.alert {
  display: none;
  padding: .7rem .95rem;
  border-radius: 10px;
  font-size: .83rem;
  line-height: 1.5
}

.alert.show {
  display: block;
  animation: fadeUp .25s ease
}

.alert-error {
  background: rgba(6, 78, 166, .1);
  border: 1px solid rgba(6, 78, 166, .28);
  color: var(--accent2)
}

.alert-success {
  background: rgba(46, 196, 182, .1);
  border: 1px solid rgba(46, 196, 182, .28);
  color: var(--success)
}

.alert-warn {
  background: rgba(244, 162, 97, .1);
  border: 1px solid rgba(244, 162, 97, .28);
  color: var(--gold)
}

/* ── HOME ACTION CARDS ── */
.home-actions {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: .9rem
}

.action-card {
  background: var(--surface);
  border: 1.5px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 1.35rem;
  cursor: pointer;
  transition: all .18s;
  display: flex;
  flex-direction: column;
  gap: .85rem;
  text-align: left;
  position: relative;
  overflow: hidden;
  width: 100%;
}

.action-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, .07), transparent)
}

.action-card:hover {
  transform: translateY(-3px);
  border-color: var(--accent)
}

.action-card:disabled {
  opacity: .45;
  cursor: not-allowed;
  transform: none
}

.action-icon {
  width: 40px;
  height: 40px;
  border-radius: 11px;
  background: rgba(6, 78, 166, .1);
  color: var(--accent);
  display: grid;
  place-items: center;
  transition: all .18s;
  flex-shrink: 0
}

.action-icon.gold {
  background: rgba(244, 162, 97, .1);
  color: var(--gold);
  width: 48px;
  height: 48px;
}

.action-icon.gold svg {
  width: 24px;
  height: 24px;
}

.action-icon.blue {
  background: rgba(46, 196, 182, .1);
  color: var(--success)
}

.action-card:hover .action-icon {
  background: rgba(6, 78, 166, .2)
}

.action-card:hover .action-icon.gold {
  background: rgba(244, 162, 97, .2)
}

.action-title {
  font-weight: 500;
  font-size: .9rem;
  color: var(--text)
}

.action-desc {
  font-size: .75rem;
  color: var(--muted);
  line-height: 1.45;
  margin-top: .15rem
}

.action-arrow {
  color: var(--muted);
  transition: all .18s;
  align-self: flex-end;
  margin-top: auto
}

.action-card:hover .action-arrow {
  color: var(--accent);
  transform: translateX(3px)
}

/* ── STAT ROW ── */
.stat-row {
  display: flex;
  gap: .65rem;
  flex-wrap: wrap
}

.stat {
  flex: 1;
  min-width: 80px;
  background: var(--surface2);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: .8rem .95rem;
  display: flex;
  flex-direction: column;
  gap: .18rem
}

.stat-label {
  font-family: var(--font-mono);
  font-size: .6rem;
  text-transform: uppercase;
  letter-spacing: .1em;
  color: var(--muted)
}

.stat-value {
  font-family: var(--font-serif);
  font-size: 1.3rem;
  color: var(--text)
}

.stat-value.accent {
  color: var(--accent)
}

.stat-value.gold {
  color: var(--gold)
}

.stat-value.success {
  color: var(--success)
}

/* ── PROGRESS ── */
.progress-bar {
  height: 4px;
  background: var(--surface2);
  border-radius: 100px;
  overflow: hidden
}

.progress-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--accent), var(--accent2));
  border-radius: 100px;
  transition: width .4s cubic-bezier(.4, 0, .2, 1)
}

.progress-meta {
  display: flex;
  justify-content: space-between;
  font-family: var(--font-mono);
  font-size: .66rem;
  color: var(--muted);
  letter-spacing: .05em
}

/* ── QUIZ ── */
.question-tag {
  font-family: var(--font-mono);
  font-size: .65rem;
  text-transform: uppercase;
  letter-spacing: .1em;
  color: var(--accent)
}

.question-text {
  font-family: var(--font-serif);
  font-size: clamp(1.05rem, 2.6vw, 1.3rem);
  line-height: 1.45;
  color: var(--text)
}

.diff-badge {
  display: inline-flex;
  align-items: center;
  gap: .3rem;
  border-radius: 100px;
  padding: .18rem .55rem;
  font-family: var(--font-mono);
  font-size: .6rem;
  text-transform: uppercase;
  letter-spacing: .08em
}

.diff-easy {
  background: rgba(46, 196, 182, .12);
  color: var(--success);
  border: 1px solid rgba(46, 196, 182, .25)
}

.diff-medium {
  background: rgba(244, 162, 97, .12);
  color: var(--gold);
  border: 1px solid rgba(244, 162, 97, .25)
}

.diff-hard {
  background: rgba(6, 78, 166, .12);
  color: var(--accent2);
  border: 1px solid rgba(6, 78, 166, .25)
}

.options {
  display: flex;
  flex-direction: column;
  gap: .55rem
}

.option {
  background: var(--surface2);
  border: 1.5px solid var(--border);
  border-radius: var(--radius);
  padding: .85rem 1rem;
  cursor: pointer;
  transition: all .15s;
  display: flex;
  align-items: flex-start;
  gap: .8rem;
  font-family: var(--font-sans);
  color: var(--text);
  font-size: .86rem;
  line-height: 1.45;
  width: 100%;
  text-align: left;
}

.option:hover:not(:disabled) {
  border-color: var(--accent);
  transform: translateX(3px)
}

.option-key {
  flex-shrink: 0;
  width: 26px;
  height: 26px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 7px;
  display: grid;
  place-items: center;
  font-family: var(--font-mono);
  font-size: .65rem;
  color: var(--muted);
  transition: all .15s;
  margin-top: .05rem
}

.option:hover:not(:disabled) .option-key {
  border-color: var(--accent);
  color: var(--accent)
}

.option-text {
  flex: 1
}

.option-icon {
  margin-left: auto;
  opacity: 0;
  transition: opacity .18s;
  flex-shrink: 0;
  margin-top: .05rem
}

.option.correct {
  border-color: var(--success);
  background: rgba(46, 196, 182, .07);
  animation: correctpop .3s ease
}

.option.correct .option-key {
  background: var(--success);
  border-color: var(--success);
  color: #fff
}

.option.correct .option-icon {
  opacity: 1;
  color: var(--success)
}

.option.wrong {
  border-color: var(--accent);
  background: rgba(6, 78, 166, .07);
  animation: wrongshake .3s ease
}

.option.wrong .option-key {
  background: var(--accent);
  border-color: var(--accent);
  color: #fff
}

.option.wrong .option-icon {
  opacity: 1;
  color: var(--accent)
}

.option.reveal-correct {
  border-color: var(--success);
  opacity: .5
}

.option.reveal-correct .option-key {
  border-color: var(--success);
  color: var(--success)
}

.option:disabled {
  cursor: default
}

@keyframes correctpop {

  0%,
  100% {
    transform: scale(1)
  }

  50% {
    transform: scale(1.01)
  }
}

@keyframes wrongshake {

  0%,
  100% {
    transform: translateX(0)
  }

  25% {
    transform: translateX(-5px)
  }

  75% {
    transform: translateX(5px)
  }
}

.explanation {
  display: none;
  background: var(--surface2);
  border: 1px solid var(--border);
  border-left: 3px solid var(--success);
  border-radius: var(--radius);
  padding: .85rem 1rem;
  font-size: .83rem;
  color: var(--muted);
  line-height: 1.6
}

.explanation.show {
  display: block;
  animation: fadeUp .3s ease
}

.explanation strong {
  color: var(--text)
}

/* ── WAVEFORM ── */
.waveform {
  display: flex;
  align-items: center;
  gap: 3px;
  height: 40px;
  margin: .2rem 0
}

.waveform-bar {
  flex: 1;
  background: var(--accent);
  border-radius: 2px;
  opacity: .2
}

.waveform.playing .waveform-bar {
  animation: waveanim .6s ease-in-out infinite alternate;
  opacity: .65
}

@keyframes waveanim {
  from {
    transform: scaleY(.25)
  }

  to {
    transform: scaleY(1)
  }
}

.waveform.playing .waveform-bar:nth-child(2) {
  animation-delay: .08s
}

.waveform.playing .waveform-bar:nth-child(3) {
  animation-delay: .16s
}

.waveform.playing .waveform-bar:nth-child(4) {
  animation-delay: .24s
}

.waveform.playing .waveform-bar:nth-child(5) {
  animation-delay: .32s
}

.waveform.playing .waveform-bar:nth-child(6) {
  animation-delay: .4s
}

.waveform.playing .waveform-bar:nth-child(7) {
  animation-delay: .32s
}

.waveform.playing .waveform-bar:nth-child(8) {
  animation-delay: .24s
}

.waveform.playing .waveform-bar:nth-child(9) {
  animation-delay: .16s
}

.waveform.playing .waveform-bar:nth-child(10) {
  animation-delay: .08s
}

.audio-btn {
  display: inline-flex;
  align-items: center;
  gap: .45rem;
  background: var(--surface2);
  border: 1px solid var(--border);
  border-radius: 100px;
  padding: .42rem .95rem;
  color: var(--text);
  font-size: .8rem;
  cursor: pointer;
  transition: all .15s;
  font-family: var(--font-sans)
}

.audio-btn:hover {
  border-color: var(--accent);
  color: var(--accent)
}

/* ── LEADERBOARD ── */
.lb-table {
  display: flex;
  flex-direction: column;
  gap: .45rem
}

.lb-row {
  display: flex;
  align-items: center;
  gap: .85rem;
  background: var(--surface2);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: .8rem .95rem;
  transition: border-color .15s
}

.lb-row.me {
  border-color: rgba(6, 78, 166, .4);
  background: rgba(6, 78, 166, .04)
}

.lb-rank {
  font-family: var(--font-mono);
  font-size: .78rem;
  color: var(--muted);
  width: 26px;
  flex-shrink: 0;
  text-align: center
}

.lb-rank.top1 {
  color: #ffd700;
  font-size: .9rem
}

.lb-rank.top2 {
  color: #c0c0c0;
  font-size: .85rem
}

.lb-rank.top3 {
  color: #cd7f32;
  font-size: .85rem
}

.lb-avatar {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  flex-shrink: 0;
  background: linear-gradient(135deg, var(--accent), var(--accent2));
  display: grid;
  place-items: center;
  font-family: var(--font-serif);
  font-size: .78rem;
  color: #fff
}

.lb-info {
  flex: 1;
  min-width: 0
}

.lb-name {
  font-size: .85rem;
  color: var(--text);
  font-weight: 500;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis
}

.lb-meta {
  font-size: .7rem;
  color: var(--muted)
}

.lb-score {
  text-align: right;
  flex-shrink: 0
}

.lb-score-val {
  font-family: var(--font-mono);
  font-size: .95rem;
  color: var(--text)
}

.lb-score-denom {
  font-size: .68rem;
  color: var(--muted)
}

.lb-empty {
  text-align: center;
  padding: 2.5rem 1rem;
  font-size: .85rem;
  color: var(--muted);
  line-height: 1.6
}

.spinner {
  width: 16px;
  height: 16px;
  border: 2px solid var(--border);
  border-top-color: var(--accent);
  border-radius: 50%;
  animation: spin .7s linear infinite;
  display: inline-block
}

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

.lb-loading {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: .65rem;
  padding: 2rem;
  color: var(--muted);
  font-size: .83rem
}

/* ── SCORE RING ── */
.score-circle-wrap {
  display: flex;
  justify-content: center
}

.score-circle {
  position: relative;
  width: 148px;
  height: 148px
}

.score-circle svg {
  transform: rotate(-90deg);
  width: 100%;
  height: 100%
}

.score-circle-bg {
  fill: none;
  stroke: var(--surface2);
  stroke-width: 8
}

.score-circle-fg {
  fill: none;
  stroke: var(--accent);
  stroke-width: 8;
  stroke-linecap: round;
  stroke-dasharray: 408;
  stroke-dashoffset: 408;
  transition: stroke-dashoffset 1.2s cubic-bezier(.4, 0, .2, 1)
}

.score-circle-fg.perfect {
  stroke: var(--success)
}

.score-circle-fg.good {
  stroke: var(--gold)
}

.score-inner {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center
}

.score-number {
  font-family: var(--font-serif);
  font-size: 2.3rem;
  line-height: 1;
  color: var(--text)
}

.score-denom {
  font-family: var(--font-mono);
  font-size: .7rem;
  color: var(--muted)
}

.verdict {
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: .35rem
}

.verdict-title {
  font-family: var(--font-serif);
  font-size: 1.5rem;
  color: var(--text)
}

.verdict-sub {
  font-size: .83rem;
  color: var(--muted);
  line-height: 1.5;
  max-width: 32ch
}

/* ── REVIEW ── */
.review-list {
  display: flex;
  flex-direction: column;
  gap: .55rem
}

.review-item {
  display: flex;
  gap: .75rem;
  align-items: flex-start;
  background: var(--surface2);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: .8rem;
  font-size: .8rem
}

.review-icon {
  flex-shrink: 0;
  width: 20px;
  height: 20px;
  border-radius: 50%;
  display: grid;
  place-items: center
}

.review-icon.ok {
  background: rgba(46, 196, 182, .15);
  color: var(--success)
}

.review-icon.bad {
  background: rgba(6, 78, 166, .15);
  color: var(--accent)
}

.review-q {
  color: var(--muted);
  margin-bottom: .18rem;
  font-size: .75rem
}

.review-a {
  color: var(--text);
  font-weight: 500
}

/* ── COMPLETED BANNER ── */
.completed-banner {
  background: rgba(46, 196, 182, .08);
  border: 1px solid rgba(46, 196, 182, .25);
  border-radius: var(--radius);
  padding: 1rem 1.1rem;
  display: flex;
  align-items: flex-start;
  gap: .75rem;
  font-size: .83rem;
  color: var(--muted);
  line-height: 1.55
}

.completed-banner strong {
  color: var(--text)
}

/* ── INSTALL BANNER ── */
#install-banner {
  display: none;
  position: relative;
  z-index: 10;
  background: linear-gradient(135deg, rgba(6, 78, 166, .1), rgba(21, 32, 51, .97));
  border: 1px solid rgba(6, 78, 166, .25);
  border-radius: var(--radius);
  padding: .9rem 1rem;
  gap: .85rem;
  align-items: flex-start
}

#install-banner.visible {
  display: flex;
  animation: fadeUp .4s ease both
}

.install-icon {
  flex-shrink: 0;
  width: 36px;
  height: 36px;
  background: rgba(6, 78, 166, .12);
  border-radius: 9px;
  display: grid;
  place-items: center;
  color: var(--accent2)
}

.install-body {
  flex: 1
}

.install-title {
  font-weight: 500;
  font-size: .86rem;
  color: var(--text);
  margin-bottom: .28rem
}

.install-steps {
  font-size: .76rem;
  color: var(--muted);
  line-height: 1.7
}

.install-steps strong {
  color: var(--text)
}

.install-close {
  flex-shrink: 0;
  background: none;
  border: none;
  cursor: pointer;
  color: var(--muted);
  padding: .2rem;
  border-radius: 5px;
  transition: color .15s
}

.install-close:hover {
  color: var(--text)
}

#btn-install-native {
  margin-top: .5rem;
  display: inline-flex;
  align-items: center;
  gap: .4rem;
  background: var(--accent);
  color: #fff;
  border: none;
  border-radius: 100px;
  padding: .38rem .85rem;
  font-size: .76rem;
  font-family: var(--font-sans);
  cursor: pointer;
  font-weight: 500;
  transition: all .18s
}

#btn-install-native:hover {
  background: var(--accent2);
  transform: translateY(-1px)
}

#btn-install-native.hidden {
  display: none
}

/* ── TOAST ── */
.toast {
  position: fixed;
  bottom: 1.2rem;
  left: 50%;
  transform: translateX(-50%) translateY(80px);
  background: var(--surface2);
  border: 1px solid var(--border);
  border-radius: 100px;
  padding: .5rem 1rem;
  font-size: .76rem;
  color: var(--muted);
  display: flex;
  align-items: center;
  gap: .45rem;
  transition: transform .3s cubic-bezier(.4, 0, .2, 1);
  z-index: 100;
  white-space: nowrap
}

.toast.show {
  transform: translateX(-50%) translateY(0)
}

/* ── LOADING OVERLAY ── */
#loading-overlay {
  position: fixed;
  inset: 0;
  background: var(--bg);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 1rem;
  z-index: 200
}

#loading-overlay.hidden {
  display: none
}

.loading-logo {
  font-family: var(--font-serif);
  font-size: 1.8rem;
  color: var(--text)
}

.loading-logo em {
  color: var(--accent);
  font-style: italic
}

.loading-sub {
  font-size: .8rem;
  color: var(--muted);
  display: flex;
  align-items: center;
  gap: .5rem
}

/* ── LIBRARY ── */
.library-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
}

.folder-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.25rem;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  cursor: pointer;
  transition: all 0.2s;
  text-align: left;
}

.folder-card:hover {
  border-color: var(--accent);
  transform: translateY(-2px);
  background: var(--surface2);
}

.folder-icon {
  width: 36px;
  height: 36px;
  border-radius: 8px;
  background: rgba(6, 78, 166, 0.1);
  color: var(--accent);
  display: grid;
  place-items: center;
}

.folder-name {
  font-weight: 500;
  font-size: 0.88rem;
  color: var(--text);
  line-height: 1.3;
}

.folder-meta {
  font-size: 0.7rem;
  color: var(--muted);
  margin-top: auto;
}

@media(max-width:480px) {
  .card {
    padding: 1.2rem
  }

  .home-actions {
    grid-template-columns: 1fr
  }

  .form-row {
    grid-template-columns: 1fr
  }

  body {
    padding: 1rem 1rem 5rem
  }
  
  .library-grid {
    grid-template-columns: 1fr;
  }
}

/* ── LEADERBOARD ELEVATION STYLES ── */
.lb-podium {
  display: flex;
  align-items: flex-end;
  justify-content: center;
  gap: 0.8rem;
  margin: 1.5rem 0 2rem 0;
  width: 100%;
}

.podium-col {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  background: linear-gradient(180deg, rgba(22, 32, 51, 0.4), rgba(15, 21, 32, 0.6));
  border: 1px solid var(--border);
  border-radius: 20px;
  padding: 1.25rem 0.5rem 1rem;
  text-align: center;
  position: relative;
  transition: all .25s cubic-bezier(.4, 0, .2, 1);
  max-width: 120px;
  min-width: 80px;
  backdrop-filter: blur(12px);
}

.podium-col:hover {
  transform: translateY(-5px);
  border-color: var(--accent);
  box-shadow: 0 12px 30px rgba(0, 0, 0, .4);
}

.podium-col.first {
  order: 2;
  min-height: 195px;
  border-color: rgba(244, 162, 97, 0.4);
  background: linear-gradient(180deg, rgba(244, 162, 97, 0.08), rgba(15, 21, 32, 0.7));
  box-shadow: 0 0 25px rgba(244, 162, 97, 0.15);
}

.podium-col.first:hover {
  border-color: rgba(244, 162, 97, 0.8);
  box-shadow: 0 12px 35px rgba(244, 162, 97, 0.25);
}

.podium-col.second {
  order: 1;
  min-height: 165px;
  border-color: rgba(192, 192, 192, 0.3);
  background: linear-gradient(180deg, rgba(192, 192, 192, 0.04), rgba(15, 21, 32, 0.7));
}

.podium-col.second:hover {
  border-color: rgba(192, 192, 192, 0.7);
}

.podium-col.third {
  order: 3;
  min-height: 150px;
  border-color: rgba(205, 127, 50, 0.3);
  background: linear-gradient(180deg, rgba(205, 127, 50, 0.04), rgba(15, 21, 32, 0.7));
}

.podium-col.third:hover {
  border-color: rgba(205, 127, 50, 0.7);
}

.podium-crown {
  position: absolute;
  top: -18px;
  left: 50%;
  transform: translateX(-50%);
  filter: drop-shadow(0 2px 5px rgba(244, 162, 97, 0.4));
  animation: crownfloat 2s ease-in-out infinite alternate;
}

@keyframes crownfloat {
  from { transform: translateX(-50%) translateY(0); }
  to { transform: translateX(-50%) translateY(-3px); }
}

.podium-badge {
  position: absolute;
  top: -12px;
  font-size: 1.1rem;
}

.podium-avatar {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  display: grid;
  place-items: center;
  font-family: var(--font-serif);
  font-size: 0.95rem;
  font-weight: 500;
  color: #fff;
  margin-bottom: .6rem;
  border: 2px solid transparent;
}

.podium-col.first .podium-avatar {
  background: linear-gradient(135deg, #ffd700, #ffa500);
  border-color: #ffd700;
  box-shadow: 0 0 10px rgba(255, 215, 0, 0.3);
}

.podium-col.second .podium-avatar {
  background: linear-gradient(135deg, #e6e6e6, #a6a6a6);
  border-color: #e6e6e6;
  box-shadow: 0 0 10px rgba(230, 230, 230, 0.2);
}

.podium-col.third .podium-avatar {
  background: linear-gradient(135deg, #d3a27f, #8c5a3c);
  border-color: #d3a27f;
  box-shadow: 0 0 10px rgba(211, 162, 127, 0.2);
}

.podium-name {
  font-size: .75rem;
  font-weight: 600;
  color: var(--text);
  margin-bottom: .4rem;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  max-width: 100%;
  padding: 0 0.2rem;
}

.podium-score {
  background: var(--surface2);
  border: 1px solid var(--border);
  border-radius: 100px;
  padding: .2rem .5rem;
  font-size: 0.72rem;
  font-family: var(--font-mono);
  color: var(--text);
  display: inline-flex;
  align-items: baseline;
  gap: 1px;
}

.podium-score-val {
  font-weight: 600;
}

.podium-score-denom {
  font-size: .56rem;
  color: var(--muted);
}

.lb-divider-title {
  font-family: var(--font-mono);
  font-size: .68rem;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: .08em;
  margin: 1.8rem 0 .8rem;
  display: flex;
  align-items: center;
  gap: .5rem;
}

.lb-divider-title::after {
  content: '';
  flex: 1;
  height: 1px;
  background: var(--border);
}

/* Row Hover Upgrades */
.lb-row {
  transition: all .2s cubic-bezier(.4, 0, .2, 1) !important;
}

.lb-row:hover {
  border-color: var(--accent) !important;
  transform: translateX(4px);
  background: linear-gradient(90deg, rgba(22, 32, 51, 0.8), rgba(22, 32, 51, 0.4)) !important;
}

@media(max-width: 360px) {
  .lb-podium {
    gap: 0.4rem;
  }
  .podium-col {
    padding: 1rem 0.25rem 0.8rem;
  }
  .podium-avatar {
    width: 36px;
    height: 36px;
    font-size: 0.85rem;
  }
}