@import url("https://fonts.googleapis.com/css2?family=Space+Grotesk:wght@300;400;500;600;700&display=swap");
*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

:root {
  --bg: #151515;
  --surface: #1c1c1c;
  --surface2: #242424;
  --border: rgba(255, 255, 255, 0.09);
  --text: #fafafa;
  --muted: #6b6b6b;
  --p1: #818cf8;
  --p2: #f472b6;
  --p3: #34d399;
  --p4: #fb923c;
  --p5: #a78bfa;
  --p6: #22d3ee;
  --accent: #e30046;
  --success: #22c55e;
  --error: #f87171;
}

body {
  background: var(--bg);
  color: var(--text);
  font-family: "Space Grotesk", sans-serif;
  min-height: 100vh;
  padding: 0 1.5rem 4rem;
  line-height: 1.5;
}

.container {
  max-width: 1440px;
  margin: 0 auto;
}

/* ── Navbar ── */
.navbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.85rem 0;
  margin-bottom: 2rem;
  border-bottom: 1px solid var(--border);
}
.nav-brand {
  font-weight: 700;
  font-size: 1.1rem;
  letter-spacing: -0.01em;
  color: var(--accent);
}
.nav-links {
  display: flex;
  gap: 0.25rem;
}
.nav-link {
  color: var(--muted);
  text-decoration: none;
  font-size: 0.875rem;
  font-weight: 700;
  padding: 0.4rem 0.9rem;
  border-radius: 7px;
  transition: all 0.15s;
}
.nav-link:hover {
  background: var(--surface2);
  color: var(--text);
}
.nav-link.active {
  background: var(--surface2);
  color: var(--text);
}

#main-panel {
  display: flex;
  gap: 1.25rem;
  align-items: flex-start;
}
.panel-col {
  flex: 1;
  min-width: 0;
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}
@media (max-width: 600px) {
  #main-panel {
    flex-direction: column;
  }
}

header {
  margin-bottom: 2.5rem;
}
h1 {
  font-size: 2.25rem;
  font-weight: 700;
  letter-spacing: -0.03em;
  color: var(--text);
  margin-bottom: 0.25rem;
}
.subtitle {
  color: var(--muted);
  font-size: 0.95rem;
}

.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 1.5rem;
}
.card-title {
  font-size: 0.78rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--accent);
  margin-bottom: 1rem;
}
.card-body {
  overflow: hidden;
  transition:
    max-height 0.3s ease,
    opacity 0.25s ease;
  max-height: 2000px;
  opacity: 1;
}
.card-body.collapsed {
  max-height: 0 !important;
  opacity: 0;
  pointer-events: none;
  margin-top: -1rem;
}
.form-group {
  margin-bottom: 1rem;
}
.form-group:last-child {
  margin-bottom: 0;
}

label {
  display: block;
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--muted);
  margin-bottom: 0.35rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}
input[type="text"],
input[type="number"],
textarea {
  width: 100%;
  background: var(--surface2);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 0.6rem 0.875rem;
  color: var(--text);
  font-family: inherit;
  font-size: 0.9375rem;
  outline: none;
  transition:
    border-color 0.15s,
    box-shadow 0.15s;
}
input[type="text"]:focus,
input[type="number"]:focus,
textarea:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(227, 0, 70, 0.12);
}
textarea {
  resize: vertical;
  min-height: 160px;
  font-family: "Courier New", monospace;
  font-size: 0.85rem;
  line-height: 1.8;
}

.hint {
  font-size: 0.78rem;
  color: var(--muted);
  margin-top: 0.4rem;
}
.hint code {
  background: var(--surface2);
  padding: 0.1em 0.35em;
  border-radius: 4px;
  font-size: 0.85em;
  color: var(--accent);
}

.row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
}
@media (max-width: 480px) {
  .row {
    grid-template-columns: 1fr;
  }
}

button {
  cursor: pointer;
  border: none;
  border-radius: 8px;
  font-family: inherit;
  font-size: 0.9rem;
  font-weight: 700;
  padding: 0.6rem 1.25rem;
  transition: all 0.15s;
}
.btn-primary {
  background: var(--accent);
  color: #fff;
  padding: 0.7rem 1.75rem;
  font-size: 0.95rem;
}
.btn-primary:hover {
  opacity: 0.88;
  transform: translateY(-1px);
}
.btn-primary:disabled {
  opacity: 0.4;
  cursor: not-allowed;
  transform: none;
}

.btn-start {
  background: var(--success);
  color: #052e16;
  padding: 0.8rem 2.25rem;
  font-size: 1.05rem;
  letter-spacing: 0.02em;
}
.btn-start:hover {
  opacity: 0.88;
  transform: translateY(-1px);
}
.btn-start:disabled {
  opacity: 0.4;
  cursor: not-allowed;
  transform: none;
}

.btn-ghost {
  background: var(--surface2);
  color: var(--muted);
  border: 1px solid var(--border);
  padding: 0.5rem 1rem;
  font-size: 0.85rem;
}
.btn-ghost:hover {
  color: var(--text);
  border-color: var(--accent);
}

.btn-skip {
  background: rgba(251, 191, 36, 0.12);
  color: #fbbf24;
  border: 1px solid rgba(251, 191, 36, 0.35);
  padding: 0.65rem 1.2rem;
  font-size: 0.9rem;
}
.btn-skip:hover {
  background: rgba(251, 191, 36, 0.22);
}
.btn-skip:disabled {
  opacity: 0.35;
  cursor: not-allowed;
}

.btn-danger {
  background: rgba(248, 113, 113, 0.12);
  color: var(--error);
  border: 1px solid rgba(248, 113, 113, 0.35);
  padding: 0.65rem 1.2rem;
  font-size: 0.9rem;
}
.btn-danger:hover {
  background: rgba(248, 113, 113, 0.22);
}
.btn-danger:disabled {
  opacity: 0.35;
  cursor: not-allowed;
}

.error-msg {
  color: var(--error);
  font-size: 0.85rem;
  margin-top: 0.75rem;
  min-height: 1.25rem;
}

.badge {
  display: inline-flex;
  align-items: center;
  background: rgba(227, 0, 70, 0.12);
  color: var(--accent);
  border-radius: 999px;
  padding: 0.15rem 0.6rem;
  font-size: 0.75rem;
  font-weight: 700;
}
.preview-meta {
  font-size: 0.82rem;
  color: var(--muted);
  margin: 0.6rem 0 0.5rem;
  display: none;
  align-items: center;
  gap: 0.5rem;
}
#preview-list {
  list-style: none;
  max-height: 180px;
  overflow-y: auto;
  border: 1px solid var(--border);
  border-radius: 8px;
  display: none;
}
#preview-list li {
  display: flex;
  gap: 0.5rem;
  padding: 0.4rem 0.75rem;
  font-size: 0.82rem;
  border-bottom: 1px solid var(--border);
  align-items: baseline;
}
#preview-list li:last-child {
  border-bottom: none;
}
.q-num {
  color: var(--muted);
  min-width: 1.8rem;
  flex-shrink: 0;
}
.q-ans {
  color: var(--success);
}

.player-q-block {
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 0.75rem;
  margin-bottom: 0.5rem;
}
.player-q-label {
  font-size: 0.72rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.07em;
  color: var(--muted);
  margin-bottom: 0.5rem;
}
.question-block {
  background: var(--surface2);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 1rem;
  margin-bottom: 0.75rem;
}
.question-block-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 0.75rem;
}
.question-block-label {
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.07em;
  color: var(--accent);
}
.btn-remove-q {
  background: none;
  border: none;
  color: var(--muted);
  font-size: 1rem;
  cursor: pointer;
  padding: 0 0.25rem;
  line-height: 1;
}
.btn-remove-q:hover {
  color: var(--error);
}
.btn-add-q {
  background: var(--surface2);
  border: 1px dashed var(--border);
  color: var(--accent);
  border-radius: 8px;
  padding: 0.55rem 1rem;
  font-size: 0.88rem;
  font-weight: 700;
  cursor: pointer;
  width: 100%;
  margin-bottom: 0.25rem;
  transition: all 0.15s;
}
.btn-add-q:hover {
  border-color: var(--accent);
  background: rgba(227, 0, 70, 0.06);
}

#result-section {
  display: none;
}

.link-row {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  margin-bottom: 0.6rem;
}
.link-row:last-of-type {
  margin-bottom: 0;
}
.link-tag {
  font-size: 0.78rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  min-width: 70px;
  flex-shrink: 0;
}
.tag-p1 {
  color: var(--p1);
}
.tag-p2 {
  color: var(--p2);
}
.tag-p3 {
  color: var(--p3);
}
.tag-p4 {
  color: var(--p4);
}
.tag-p5 {
  color: var(--p5);
}
.tag-p6 {
  color: var(--p6);
}
.tag-prog {
  color: var(--accent);
}
.link-row input[type="text"] {
  flex: 1;
  font-family: "Courier New", monospace;
  font-size: 0.78rem;
  padding: 0.45rem 0.75rem;
  cursor: text;
}
.copy-btn {
  background: var(--surface2);
  border: 1px solid var(--border);
  border-radius: 7px;
  color: var(--muted);
  font-family: inherit;
  font-size: 0.78rem;
  font-weight: 600;
  padding: 0.4rem 0.75rem;
  cursor: pointer;
  transition: all 0.15s;
  white-space: nowrap;
}
.copy-btn:hover {
  color: var(--text);
  border-color: var(--accent);
}
.copy-btn.copied {
  color: var(--success);
  border-color: var(--success);
}
.divider {
  border: none;
  border-top: 1px solid var(--border);
  margin: 1.25rem 0;
}
.start-row {
  display: flex;
  align-items: center;
  gap: 1rem;
  flex-wrap: wrap;
}
#start-status {
  font-size: 0.875rem;
  color: var(--muted);
}
#start-status.ok {
  color: var(--success);
}
#start-status.err {
  color: var(--error);
}
.mode-section {
  display: none;
}
.mode-section.active {
  display: block;
}
.bank-mode-badge {
  font-size: 0.68rem;
  font-weight: 800;
  padding: 0.18rem 0.5rem;
  border-radius: 5px;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  flex-shrink: 0;
}
.bank-mode-abcd {
  background: rgba(227, 0, 70, 0.14);
  color: var(--accent);
}
.bank-mode-freetext {
  background: rgba(251, 191, 36, 0.14);
  color: #fbbf24;
}
.bank-mode-freetext-sim {
  background: rgba(52, 211, 153, 0.14);
  color: #34d399;
}
.bank-pick-row {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  padding: 0.55rem 0.75rem;
  border: 1px solid var(--border);
  border-radius: 8px;
  margin-bottom: 0.4rem;
  cursor: default;
}
.bank-pick-row:hover {
  border-color: rgba(227, 0, 70, 0.35);
  background: var(--surface2);
}
.bank-pick-row-name {
  flex: 1;
  font-size: 0.88rem;
  font-weight: 700;
}
.bank-pick-row-meta {
  font-size: 0.75rem;
  color: var(--muted);
}

.abcd-q-block {
  background: var(--surface2);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 1rem;
  margin-bottom: 0.75rem;
}
.abcd-q-block-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 0.75rem;
}
.abcd-q-block-label {
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.07em;
  color: var(--accent);
}
.abcd-options-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.5rem;
  margin-bottom: 0.75rem;
}
.abcd-opt-row {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}
.abcd-opt-letter {
  font-size: 0.78rem;
  font-weight: 800;
  width: 18px;
  flex-shrink: 0;
}
.abcd-opt-a {
  color: #e11d48;
}
.abcd-opt-b {
  color: #3b82f6;
}
.abcd-opt-c {
  color: #f59e0b;
}
.abcd-opt-d {
  color: #22c55e;
}
.abcd-opt-row input {
  flex: 1;
}
.correct-radio-row {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin-top: 0.25rem;
}
.correct-radio-label {
  font-size: 0.72rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--muted);
}
.correct-radio-options {
  display: flex;
  gap: 0.6rem;
}
.correct-radio-opt {
  display: flex;
  align-items: center;
  gap: 0.3rem;
  cursor: pointer;
  font-size: 0.85rem;
  font-weight: 700;
}
.correct-radio-opt input[type="radio"] {
  accent-color: var(--accent);
  width: 14px;
  height: 14px;
}

/* Auth modal */
#auth-overlay {
  position: fixed;
  inset: 0;
  z-index: 9999;
  background: rgba(15, 15, 15, 0.93);
  backdrop-filter: blur(6px);
  display: flex;
  align-items: center;
  justify-content: center;
}
#auth-overlay.hidden {
  display: none;
}
.auth-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 2.25rem 2rem;
  width: 100%;
  max-width: 360px;
  box-shadow: 0 24px 48px rgba(0, 0, 0, 0.5);
}
.auth-title {
  font-size: 1.5rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--text);
  margin-bottom: 0.35rem;
}
.auth-sub {
  color: var(--muted);
  font-size: 0.875rem;
  margin-bottom: 1.5rem;
}
.auth-input-wrap {
  position: relative;
  margin-bottom: 1rem;
}
#auth-password {
  width: 100%;
  background: var(--surface2);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 0.65rem 2.75rem 0.65rem 0.875rem;
  color: var(--text);
  font-family: inherit;
  font-size: 1rem;
  outline: none;
  transition:
    border-color 0.15s,
    box-shadow 0.15s;
  letter-spacing: 0.1em;
}
#auth-password:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(227, 0, 70, 0.12);
}
#auth-toggle {
  position: absolute;
  right: 0.75rem;
  top: 50%;
  transform: translateY(-50%);
  background: none;
  border: none;
  color: var(--muted);
  cursor: pointer;
  font-size: 1.1rem;
  padding: 0;
}
#auth-toggle:hover {
  color: var(--text);
}
#auth-btn {
  width: 100%;
  background: var(--accent);
  color: #fff;
  border: none;
  border-radius: 8px;
  padding: 0.75rem;
  font-family: inherit;
  font-size: 1rem;
  font-weight: 700;
  cursor: pointer;
  transition: opacity 0.15s;
  margin-bottom: 0.75rem;
}
#auth-btn:hover {
  opacity: 0.88;
}
#auth-btn:disabled {
  opacity: 0.45;
  cursor: not-allowed;
}
#auth-error {
  color: var(--error);
  font-size: 0.82rem;
  min-height: 1.1rem;
  text-align: center;
}