@font-face {
  font-family: "Sora";
  src: url("./fonts/sora-latin.woff2") format("woff2");
  font-style: normal;
  font-weight: 400 700;
  font-display: swap;
}

@font-face {
  font-family: "DM Sans";
  src: url("./fonts/dm-sans-latin.woff2") format("woff2");
  font-style: normal;
  font-weight: 400 700;
  font-display: swap;
}

:root {
  --bg: #1A1A2E;
  --bg-elevated: #16213E;
  --bg-card: rgba(22, 33, 62, 0.9);
  --bg-card-strong: #0F1A33;
  --accent: #0F3460;
  --accent-bright: #3BA4F9;
  --text: #F8FAFC;
  --text-muted: #B5C2D6;
  --border: rgba(255, 255, 255, 0.08);
  --success: #28C76F;
  --danger: #FF6B6B;
  --warning: #FFD166;
  --shadow: 0 18px 40px rgba(0, 0, 0, 0.28);
  --radius-xl: 28px;
  --radius-lg: 20px;
  --radius-md: 16px;
  --radius-sm: 12px;
  --display-font: "Sora", "Avenir Next", "Segoe UI", sans-serif;
  --body-font: "DM Sans", "Avenir Next", "Segoe UI", sans-serif;
}

* {
  box-sizing: border-box;
}

html {
  background:
    radial-gradient(circle at top, rgba(59, 164, 249, 0.18), transparent 32%),
    linear-gradient(180deg, #10182e 0%, var(--bg) 48%, #0d1328 100%);
  min-height: 100%;
}

body {
  margin: 0;
  min-height: 100vh;
  color: var(--text);
  font-family: var(--body-font);
  background: transparent;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

button,
input,
select,
textarea {
  font: inherit;
}

button {
  border: 0;
  cursor: pointer;
}

a {
  color: inherit;
  text-decoration: none;
}

pre {
  white-space: pre-wrap;
  word-break: break-word;
}

.app-shell {
  min-height: 100vh;
}

.boot-screen {
  min-height: 100vh;
  display: grid;
  place-items: center;
  gap: 0.8rem;
  text-align: center;
  padding: 2rem;
}

.boot-screen h1,
.screen-title,
.module-card h2,
.question-stem,
.sheet-panel h3,
.summary-score,
.brand-lockup h1 {
  font-family: var(--display-font);
  letter-spacing: -0.03em;
}

.boot-mark,
.brand-mark {
  width: 72px;
  height: 72px;
  display: grid;
  place-items: center;
  border-radius: 24px;
  background:
    linear-gradient(145deg, rgba(59, 164, 249, 0.92), rgba(15, 52, 96, 0.94)),
    linear-gradient(180deg, rgba(255, 255, 255, 0.08), transparent);
  box-shadow: var(--shadow);
  font-family: var(--display-font);
  font-size: 1.45rem;
  font-weight: 700;
}

.app-frame {
  width: min(100%, 560px);
  min-height: 100vh;
  margin: 0 auto;
  padding:
    max(1.2rem, env(safe-area-inset-top)) 1rem
    calc(6.3rem + env(safe-area-inset-bottom));
  position: relative;
}

.app-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 1rem;
  margin-bottom: 1rem;
}

.brand-lockup {
  display: flex;
  align-items: center;
  gap: 0.85rem;
  padding: 0;
  border: 0;
  background: transparent;
  color: inherit;
  text-align: left;
}

.brand-lockup h1 {
  margin: 0;
  font-size: 1.35rem;
}

.brand-lockup p,
.muted-copy,
.empty-copy,
.status-note,
.support-copy {
  margin: 0.15rem 0 0;
  color: var(--text-muted);
  font-size: 0.94rem;
}

.header-actions {
  display: flex;
  gap: 0.6rem;
  align-items: center;
}

.icon-button,
.pill-button,
.nav-link {
  min-width: 44px;
  min-height: 44px;
  border-radius: 16px;
}

.icon-button {
  background: rgba(255, 255, 255, 0.06);
  color: var(--text);
  padding: 0 0.9rem;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--border);
}

.connection-pill {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  border-radius: 999px;
  padding: 0.5rem 0.8rem;
  background: rgba(15, 52, 96, 0.7);
  color: var(--text-muted);
  border: 1px solid var(--border);
  font-size: 0.8rem;
}

.connection-pill.is-online::before,
.connection-pill.is-offline::before {
  content: "";
  width: 8px;
  height: 8px;
  border-radius: 999px;
}

.connection-pill.is-online::before {
  background: var(--success);
}

.connection-pill.is-offline::before {
  background: var(--danger);
}

.screen {
  display: grid;
  gap: 1rem;
}

.hero-card,
.module-card,
.stat-card,
.question-card,
.sheet-panel,
.ai-panel,
.install-banner,
.settings-card,
.summary-card,
.admin-panel,
.session-review {
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.03), transparent), var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow);
}

.hero-card,
.module-card,
.stat-card,
.question-card,
.install-banner,
.settings-card,
.summary-card,
.admin-panel,
.session-review {
  padding: 1rem;
}

.hero-card {
  overflow: hidden;
  position: relative;
  background:
    radial-gradient(circle at top right, rgba(59, 164, 249, 0.22), transparent 42%),
    linear-gradient(180deg, rgba(59, 164, 249, 0.08), transparent),
    var(--bg-card-strong);
}

.hero-card::after {
  content: "";
  position: absolute;
  inset: auto -20% -35% auto;
  width: 220px;
  height: 220px;
  border-radius: 999px;
  background: radial-gradient(circle, rgba(59, 164, 249, 0.22), transparent 68%);
  pointer-events: none;
}

.hero-card h2,
.module-card h2,
.summary-score,
.question-stem {
  margin: 0;
  font-size: 1.22rem;
}

.hero-actions,
.module-actions,
.stack-row,
.filter-row,
.question-actions,
.banner-actions,
.settings-actions,
.summary-actions,
.review-actions {
  display: flex;
  gap: 0.75rem;
  flex-wrap: wrap;
}

.primary-button,
.secondary-button,
.ghost-button,
.option-button,
.action-chip {
  min-height: 48px;
  border-radius: 16px;
  padding: 0.85rem 1rem;
  font-weight: 700;
  transition: transform 0.18s ease, background 0.18s ease, border-color 0.18s ease;
}

.primary-button:active,
.secondary-button:active,
.ghost-button:active,
.option-button:active,
.action-chip:active {
  transform: scale(0.985);
}

.primary-button {
  color: var(--text);
  background: linear-gradient(135deg, var(--module-accent, var(--accent-bright)), var(--accent));
}

.secondary-button {
  color: var(--text);
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid var(--border);
}

.ghost-button,
.action-chip {
  color: var(--text-muted);
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--border);
}

.primary-button.is-block,
.secondary-button.is-block,
.ghost-button.is-block {
  width: 100%;
}

.primary-button[disabled],
.secondary-button[disabled],
.ghost-button[disabled] {
  opacity: 0.5;
  cursor: not-allowed;
}

.module-grid,
.stat-grid {
  display: grid;
  gap: 0.9rem;
}

.module-grid {
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
}

.stat-grid {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.stat-card.is-wide {
  grid-column: span 2;
}

.module-card {
  position: relative;
  overflow: hidden;
}

.module-card::before {
  content: "";
  position: absolute;
  inset: 0 auto 0 0;
  width: 5px;
  background: var(--module-accent, var(--accent-bright));
}

.module-meta,
.question-meta,
.summary-meta,
.review-meta {
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
  align-items: center;
}

.pill,
.filter-chip,
.tag {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  min-height: 36px;
  border-radius: 999px;
  padding: 0 0.85rem;
  font-size: 0.82rem;
}

.pill {
  background: rgba(59, 164, 249, 0.12);
  color: var(--text);
  border: 1px solid rgba(59, 164, 249, 0.18);
}

.pill.difficulty-easy { color: #9DE8BB; background: rgba(40, 199, 111, 0.12); border-color: rgba(40, 199, 111, 0.3); }
.pill.difficulty-medium { color: #A9D8FF; background: rgba(59, 164, 249, 0.12); border-color: rgba(59, 164, 249, 0.3); }
.pill.difficulty-hard { color: #FFD98A; background: rgba(255, 209, 102, 0.12); border-color: rgba(255, 209, 102, 0.3); }
.pill.difficulty-expert { color: #FFB0B0; background: rgba(255, 107, 107, 0.12); border-color: rgba(255, 107, 107, 0.3); }

.filter-chip {
  background: rgba(255, 255, 255, 0.04);
  color: var(--text-muted);
  border: 1px solid var(--border);
}

.filter-chip.is-active {
  background: rgba(59, 164, 249, 0.18);
  color: var(--text);
  border-color: rgba(59, 164, 249, 0.28);
}

.progress-bar {
  width: 100%;
  height: 10px;
  border-radius: 999px;
  overflow: hidden;
  background: rgba(255, 255, 255, 0.08);
}

.progress-bar > span {
  display: block;
  height: 100%;
  width: 0;
  border-radius: inherit;
  background: linear-gradient(90deg, var(--module-accent, var(--accent-bright)), var(--accent-bright));
}

.stat-value {
  font-family: var(--display-font);
  font-size: 1.5rem;
  margin: 0;
}

.stat-label {
  margin: 0.15rem 0 0;
  font-size: 0.84rem;
  color: var(--text-muted);
}

.performance-card {
  display: grid;
  gap: 1rem;
}

.performance-chart-shell {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  flex-wrap: wrap;
}

.performance-pie {
  --pie-angle: 0deg;
  width: 132px;
  height: 132px;
  border-radius: 50%;
  position: relative;
  flex: 0 0 auto;
  background:
    conic-gradient(var(--success) 0 var(--pie-angle), var(--danger) var(--pie-angle) 360deg);
  box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.04);
}

.performance-pie.is-empty {
  background: conic-gradient(rgba(255, 255, 255, 0.12) 0 360deg);
}

.performance-pie::after {
  content: "";
  position: absolute;
  inset: 16px;
  border-radius: 50%;
  background: var(--bg-card-strong);
  border: 1px solid rgba(255, 255, 255, 0.05);
}

.performance-pie-center {
  position: absolute;
  inset: 0;
  z-index: 1;
  display: grid;
  place-items: center;
  text-align: center;
}

.performance-pie-center strong {
  font-family: var(--display-font);
  font-size: 1.4rem;
}

.performance-pie-center span {
  color: var(--text-muted);
  font-size: 0.8rem;
}

.performance-legend {
  display: grid;
  gap: 0.7rem;
  min-width: 160px;
  flex: 1;
}

.performance-legend-row {
  display: grid;
  grid-template-columns: auto auto 1fr;
  align-items: center;
  gap: 0.55rem;
}

.performance-dot {
  width: 12px;
  height: 12px;
  border-radius: 999px;
}

.performance-dot.is-correct {
  background: var(--success);
}

.performance-dot.is-incorrect {
  background: var(--danger);
}

.question-card {
  display: grid;
  gap: 1rem;
}

.question-card.is-correct {
  animation: flash-success 0.75s ease;
}

.question-card.is-incorrect {
  animation: flash-danger 0.75s ease;
}

.question-stem {
  line-height: 1.35;
}

.option-list,
.summary-list,
.history-list,
.review-list {
  display: grid;
  gap: 0.75rem;
}

.option-button {
  width: 100%;
  text-align: left;
  color: var(--text);
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--border);
}

.option-button.is-selected {
  border-color: rgba(59, 164, 249, 0.36);
  background: rgba(59, 164, 249, 0.14);
}

.option-button.is-correct {
  border-color: rgba(40, 199, 111, 0.3);
  background: rgba(40, 199, 111, 0.16);
}

.option-button.is-wrong {
  border-color: rgba(255, 107, 107, 0.34);
  background: rgba(255, 107, 107, 0.12);
}

.numeric-form,
.settings-form {
  display: grid;
  gap: 0.8rem;
}

.text-input {
  width: 100%;
  min-height: 52px;
  border-radius: 16px;
  border: 1px solid var(--border);
  background: rgba(255, 255, 255, 0.05);
  color: var(--text);
  padding: 0.9rem 1rem;
}

.result-banner {
  border-radius: 16px;
  padding: 0.9rem 1rem;
  font-size: 0.95rem;
  border: 1px solid transparent;
}

.result-banner.is-correct {
  color: #DDF8E8;
  background: rgba(40, 199, 111, 0.18);
  border-color: rgba(40, 199, 111, 0.28);
}

.result-banner.is-incorrect {
  color: #FFE5E5;
  background: rgba(255, 107, 107, 0.18);
  border-color: rgba(255, 107, 107, 0.28);
}

.small-heading,
.section-heading {
  margin: 0 0 0.75rem;
  font-size: 0.88rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-muted);
}

.bottom-nav {
  position: fixed;
  left: 50%;
  bottom: 0;
  transform: translateX(-50%);
  width: min(100%, 560px);
  padding: 0.8rem 1rem calc(0.8rem + env(safe-area-inset-bottom));
  background: linear-gradient(180deg, rgba(11, 18, 36, 0), rgba(11, 18, 36, 0.94) 26%);
  backdrop-filter: blur(18px);
}

.bottom-nav__rail {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 0.55rem;
  padding: 0.45rem;
  border: 1px solid var(--border);
  border-radius: 24px;
  background: rgba(8, 14, 28, 0.88);
  box-shadow: var(--shadow);
}

.nav-link {
  display: grid;
  gap: 0.2rem;
  place-items: center;
  padding: 0.55rem 0.4rem;
  color: var(--text-muted);
  font-size: 0.73rem;
}

.nav-link.is-active {
  color: var(--text);
  background: rgba(59, 164, 249, 0.12);
}

.sheet,
.overlay {
  position: fixed;
  inset: 0;
  z-index: 40;
  pointer-events: none;
}

.overlay.is-visible,
.sheet.is-visible {
  pointer-events: auto;
}

.overlay-backdrop,
.sheet-backdrop {
  position: absolute;
  inset: 0;
  background: rgba(5, 7, 16, 0.55);
  opacity: 0;
  transition: opacity 0.2s ease;
}

.overlay.is-visible .overlay-backdrop,
.sheet.is-visible .sheet-backdrop {
  opacity: 1;
}

.sheet-panel {
  position: absolute;
  left: 0.75rem;
  right: 0.75rem;
  bottom: 0.75rem;
  padding: 1rem;
  max-height: min(82vh, 860px);
  overflow: hidden;
  transform: translateY(110%);
  opacity: 0;
  visibility: hidden;
  transition: transform 0.24s ease;
}

/* Edge extends the same mobile study shell. */
.course-unit { border-top: 1px solid var(--border); padding: 0.65rem 0; }
.course-unit summary { display: flex; align-items: center; gap: 0.7rem; cursor: pointer; min-height: 48px; }
.course-unit small { display: block; color: var(--text-muted); margin-top: 0.25rem; }
.course-lessons { display: grid; gap: 0.45rem; padding-top: 0.75rem; }
.lesson-link { display: flex; align-items: center; justify-content: space-between; gap: 0.8rem; min-height: 48px; padding: 0.75rem; border-radius: 12px; background: rgba(255,255,255,0.05); }
.lesson-link span:last-child { font-size: 0.75rem; color: var(--warning); flex-shrink: 0; }
.lesson-link.is-muted, .course-locked { opacity: 0.6; }
.mastery-ring { width: 40px; height: 40px; flex-shrink: 0; transform: rotate(-90deg); }
.mastery-ring circle { fill: none; stroke: var(--border); stroke-width: 4; }
.mastery-ring circle:last-child { stroke: var(--warning); }
.lesson-stages { display: flex; gap: 0.35rem; padding: 0; list-style: none; overflow-x: auto; }
.lesson-stages li { flex: 1; min-width: 58px; font-size: 0.7rem; text-transform: capitalize; color: var(--text-muted); padding: 0.5rem 0; }
.lesson-stages .is-active { color: var(--warning); }
.course-formula { padding: 0.8rem; border-radius: 12px; background: var(--bg-card-strong); color: var(--warning); }
.confidence-picker { border: 0; padding: 0; margin: 1rem 0; }
.confidence-options { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 0.5rem; padding-top: 0.65rem; }
.confidence-options button, .numeric-keys button { min-height: 44px; padding: 0.4rem; }
.numeric-keys { display: flex; gap: 0.45rem; flex-wrap: wrap; }
.numeric-keys button { flex: 1; }
.lightning-screen { min-height: 70vh; display: grid; align-content: center; gap: 1rem; }
.app-frame.is-lightning { padding-bottom: max(1rem, env(safe-area-inset-bottom)); }
.is-lightning .lightning-screen { min-height: calc(100svh - 3rem); }
.lightning-screen h2 { font-size: 1.6rem; line-height: 1.4; margin: 0; }
.countdown-ring { position: relative; width: 124px; height: 124px; margin: 0 auto; display: grid; place-items: center; }
.countdown-ring svg { position: absolute; inset: 0; transform: rotate(-90deg); }
.countdown-ring circle { fill: none; stroke: var(--border); stroke-width: 5; }
.countdown-ring circle:last-child { stroke: var(--warning); }
.countdown-ring strong { font-size: 1.8rem; }
.settings-toggle { display: flex; align-items: center; min-height: 44px; gap: 0.6rem; }
.settings-toggle input { width: 22px; height: 22px; }
.course-unit p, .question-card p { line-height: 1.65; }
.bottom-nav__rail { grid-template-columns: repeat(4, minmax(0, 1fr)); }
.bottom-nav .nav-link { min-width: 44px; }

.sheet.is-visible .sheet-panel {
  transform: translateY(0);
  opacity: 1;
  visibility: visible;
}

.sheet-copy {
  display: grid;
  gap: 0.9rem;
  max-height: calc(min(82vh, 860px) - 7rem);
  overflow: auto;
  padding-right: 0.15rem;
  margin: 0.4rem 0 1rem;
}

.sheet-copy p {
  margin: 0;
}

.mental-table-stack {
  display: grid;
  gap: 0.9rem;
}

.mental-table-card {
  display: grid;
  gap: 0.65rem;
  padding: 0.9rem;
  border-radius: 18px;
  border: 1px solid var(--border);
  background: rgba(255, 255, 255, 0.04);
}

.mental-table-card h4 {
  margin: 0;
  font-family: var(--display-font);
  font-size: 1rem;
}

.mental-table-wrap {
  overflow-x: auto;
  border-radius: 14px;
  border: 1px solid rgba(255, 255, 255, 0.06);
  background: rgba(9, 15, 30, 0.46);
}

.mental-table {
  width: 100%;
  min-width: 420px;
  border-collapse: collapse;
  font-size: 0.88rem;
}

.mental-table th,
.mental-table td {
  padding: 0.65rem 0.7rem;
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
  text-align: left;
  white-space: nowrap;
}

.mental-table th {
  position: sticky;
  top: 0;
  background: rgba(15, 26, 51, 0.96);
  color: var(--text);
  z-index: 1;
}

.mental-table tr:last-child td {
  border-bottom: 0;
}

.ai-panel {
  padding: 1rem;
}

.goal-form-grid,
.calendar-summary {
  display: grid;
  gap: 0.85rem;
}

.goal-form-card {
  padding: 0.9rem;
  border-radius: 18px;
  border: 1px solid var(--border);
  background: rgba(255, 255, 255, 0.03);
}

.chat-panel,
.chat-form,
.calendar-shell {
  display: grid;
  gap: 0.85rem;
}

.chat-toolbar,
.calendar-toolbar,
.calendar-nav {
  display: flex;
  gap: 0.75rem;
  flex-wrap: wrap;
}

.chat-toolbar,
.calendar-toolbar {
  align-items: flex-start;
  justify-content: space-between;
}

.chat-log {
  display: grid;
  gap: 0.75rem;
  max-height: 340px;
  overflow-y: auto;
  padding-right: 0.15rem;
}

.chat-bubble {
  max-width: 88%;
  padding: 0.85rem 0.95rem;
  border-radius: 18px;
  border: 1px solid var(--border);
  background: rgba(255, 255, 255, 0.04);
}

.chat-bubble strong {
  display: block;
  margin-bottom: 0.35rem;
  font-size: 0.76rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-muted);
}

.chat-bubble.is-user {
  margin-left: auto;
  background: rgba(59, 164, 249, 0.16);
  border-color: rgba(59, 164, 249, 0.26);
}

.chat-bubble.is-assistant {
  margin-right: auto;
}

.textarea-input {
  min-height: 118px;
  resize: vertical;
}

.calendar-weekdays,
.calendar-grid {
  display: grid;
  grid-template-columns: repeat(7, minmax(0, 1fr));
  gap: 0.45rem;
}

.calendar-weekdays span {
  text-align: center;
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-muted);
}

.calendar-cell {
  min-height: 92px;
  display: grid;
  align-content: start;
  gap: 0.35rem;
  padding: 0.5rem;
  border-radius: 16px;
  border: 1px solid var(--border);
  background: rgba(255, 255, 255, 0.03);
}

.calendar-cell.has-activity {
  background: rgba(59, 164, 249, 0.08);
}

.calendar-cell.is-goal-hit {
  border-color: rgba(40, 199, 111, 0.32);
  box-shadow: inset 0 0 0 1px rgba(40, 199, 111, 0.14);
}

.calendar-cell.is-goal-hit .calendar-note {
  color: #DDF8E8;
}

.calendar-cell.is-today {
  outline: 1px solid rgba(59, 164, 249, 0.38);
}

.calendar-cell.is-outside {
  opacity: 0.34;
}

.calendar-cell-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.4rem;
}

.calendar-day-number {
  font-weight: 700;
}

.calendar-pill {
  display: inline-flex;
  align-items: center;
  min-height: 22px;
  padding: 0 0.4rem;
  border-radius: 999px;
  background: rgba(59, 164, 249, 0.18);
  color: var(--text);
  font-size: 0.66rem;
}

.calendar-total {
  margin: 0;
  font-family: var(--display-font);
  font-size: 1.12rem;
}

.calendar-badges {
  display: flex;
  flex-wrap: wrap;
  gap: 0.3rem;
  font-size: 0.7rem;
  color: var(--text-muted);
}

.calendar-badges span {
  padding: 0.15rem 0.38rem;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.06);
}

.calendar-note {
  margin: 0;
  font-size: 0.74rem;
  color: var(--text-muted);
}

.install-banner {
  display: grid;
  gap: 0.8rem;
  border-color: rgba(59, 164, 249, 0.24);
}

.settings-card label {
  font-size: 0.9rem;
  color: var(--text-muted);
}

.toast {
  position: fixed;
  left: 50%;
  bottom: calc(6.8rem + env(safe-area-inset-bottom));
  transform: translateX(-50%) translateY(18px);
  padding: 0.85rem 1rem;
  border-radius: 999px;
  background: rgba(11, 18, 36, 0.94);
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.18s ease, transform 0.18s ease;
  z-index: 50;
}

.toast.is-visible {
  opacity: 1;
  transform: translateX(-50%) translateY(0);
}

.celebration {
  position: fixed;
  inset: 0;
  display: grid;
  place-items: center;
  padding: 2rem;
  background:
    radial-gradient(circle at center, rgba(59, 164, 249, 0.22), rgba(11, 18, 36, 0.95)),
    rgba(7, 11, 23, 0.9);
  z-index: 70;
}

.celebration-card {
  width: min(100%, 420px);
  text-align: center;
  padding: 1.25rem;
  border-radius: 28px;
  background: rgba(8, 14, 28, 0.96);
  border: 1px solid rgba(255, 255, 255, 0.1);
  box-shadow: var(--shadow);
  animation: celebrate-burst 0.45s ease;
}

.inline-list {
  display: flex;
  flex-wrap: wrap;
  gap: 0.55rem;
}

.history-item,
.review-item,
.weak-topic-item {
  border-radius: 16px;
  padding: 0.85rem 0.9rem;
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--border);
}

.history-item strong,
.review-item strong,
.weak-topic-item strong {
  display: block;
}

.accent-copy {
  color: var(--module-accent, var(--accent-bright));
}

.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;
}

@keyframes flash-success {
  0% {
    box-shadow: 0 0 0 rgba(40, 199, 111, 0);
  }

  35% {
    box-shadow: 0 0 0 999px rgba(40, 199, 111, 0.08) inset;
  }

  100% {
    box-shadow: 0 0 0 rgba(40, 199, 111, 0);
  }
}

@keyframes flash-danger {
  0% {
    box-shadow: 0 0 0 rgba(255, 107, 107, 0);
  }

  35% {
    box-shadow: 0 0 0 999px rgba(255, 107, 107, 0.08) inset;
  }

  100% {
    box-shadow: 0 0 0 rgba(255, 107, 107, 0);
  }
}

@keyframes celebrate-burst {
  0% {
    transform: scale(0.88);
    opacity: 0;
  }

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

@media (min-width: 640px) {
  .app-frame {
    padding-left: 1.2rem;
    padding-right: 1.2rem;
  }

  .goal-form-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .calendar-summary {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .stat-grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}