/* ═══════════════════════════════════════════
   DESIGN TOKENS
═══════════════════════════════════════════ */
:root {
  --bg:       #0f2f58;
  --ink:      #132239;
  --ink-mid:  #283d5e;
  --ink-soft: #4f6481;
  --panel:    #f1e7d4;
  --mint:     #c8d9ef;
  --sage:     #e6d5b2;
  --steel:    #c3d1e8;
  --rust:     #d2a46a;
  --bad:      #c0392b;
  --good:     #27ae60;
  --gap:      10px;
  --radius:   18px;
}

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

html, body {
  height: 100%;
  margin: 0;
}

body {
  background:
    linear-gradient(rgba(10, 24, 44, 0.42), rgba(10, 24, 44, 0.42)),
    url("bg_image/bg.png") center center / cover no-repeat fixed;
  font-family: "HK Grotesk Wide", "Funnel Sans", ui-sans-serif, system-ui, sans-serif;
  color: var(--ink);
}

a { color: var(--ink-mid); }

/* ═══════════════════════════════════════════
   ONBOARDING
═══════════════════════════════════════════ */

.onboard-overlay {
  position: fixed;
  inset: 0;
  background:
    linear-gradient(rgba(20, 26, 34, 0.38), rgba(20, 26, 34, 0.38)),
    url("bg_image/bg.png") center center / cover no-repeat;
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 100;
  padding: 20px;
  overflow-y: auto;
}

.onboard-card,
.newsletter-card {
  background: rgba(243, 235, 226, 0.74);
  border: 2px solid var(--ink);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
}

.onboard-card {
  border-radius: 28px;
  padding: 44px 40px;
  max-width: 520px;
  width: 100%;
  display: flex;
  flex-direction: column;
  gap: 28px;
  box-shadow: 6px 6px 0 var(--ink);
}

.onboard-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 22px;
  font-weight: 900;
  letter-spacing: -0.3px;
}

.onboard-brand svg {
  width: 28px; height: 28px;
  stroke: var(--ink);
}

.onboard-hero { display: flex; flex-direction: column; gap: 10px; }

.onboard-title {
  font-size: 36px;
  font-weight: 900;
  line-height: 1.1;
  margin: 0;
}

.onboard-sub {
  font-size: 15px;
  line-height: 1.65;
  color: var(--ink-mid);
  margin: 0;
}

/* Powers rows */
.onboard-powers {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.power-row {
  display: flex;
  gap: 14px;
  align-items: flex-start;
  background: var(--mint);
  border-radius: 14px;
  padding: 14px 16px;
}

.power-row svg {
  width: 20px; height: 20px;
  stroke: var(--ink);
  flex-shrink: 0;
  margin-top: 2px;
}

.power-row div { display: flex; flex-direction: column; gap: 3px; }
.power-row strong { font-size: 13px; font-weight: 700; }
.power-row span   { font-size: 12px; color: var(--ink-mid); line-height: 1.4; }

/* Pollen box */
.onboard-pollen-box {
  display: flex;
  gap: 14px;
  align-items: flex-start;
  background: var(--sage);
  border: 2px solid var(--ink);
  border-radius: 14px;
  padding: 16px;
}

.onboard-pollen-box svg {
  width: 20px; height: 20px;
  stroke: var(--ink);
  flex-shrink: 0;
  margin-top: 2px;
}

.onboard-pollen-box div   { display: flex; flex-direction: column; gap: 6px; }
.onboard-pollen-box strong { font-size: 13px; font-weight: 700; }
.onboard-pollen-box p {
  font-size: 13px;
  line-height: 1.55;
  color: var(--ink-mid);
  margin: 0;
}

/* Auth section */
.onboard-auth {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.auth-title {
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 0.3px;
}

.btn-primary {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  border: 2px solid var(--ink);
  border-radius: 999px;
  padding: 13px 24px;
  background: var(--ink);
  color: #fff;
  font-family: inherit;
  font-size: 14px;
  font-weight: 700;
  cursor: pointer;
  transition: transform 0.1s, box-shadow 0.1s;
}

.btn-primary svg { width: 18px; height: 18px; stroke: #fff; }

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 5px 0 rgba(26,26,26,.25);
}

.auth-note {
  display: flex;
  gap: 8px;
  align-items: flex-start;
  font-size: 12px;
  color: var(--ink-soft);
  line-height: 1.5;
  background: var(--steel);
  border-radius: 10px;
  padding: 10px 12px;
}

.auth-note svg { width: 14px; height: 14px; stroke: var(--ink-soft); flex-shrink: 0; margin-top: 1px; }
.auth-note a   { color: var(--ink-mid); }

.auth-divider {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--ink-soft);
  font-size: 12px;
}

.auth-divider::before,
.auth-divider::after {
  content: "";
  flex: 1;
  height: 1px;
  background: var(--ink-soft);
  opacity: .35;
}

.key-row {
  display: flex;
  gap: 8px;
}

.key-input {
  flex: 1;
  border: 2px solid var(--ink);
  border-radius: 12px;
  padding: 10px 14px;
  font-family: monospace;
  font-size: 13px;
  background: #fff;
  outline: none;
  color: var(--ink);
}

.key-input:focus { box-shadow: 0 0 0 3px rgba(26,26,26,.15); }

.btn-secondary {
  border: 2px solid var(--ink);
  border-radius: 999px;
  padding: 10px 16px;
  background: var(--sage);
  color: var(--ink);
  font-family: inherit;
  font-size: 13px;
  font-weight: 700;
  cursor: pointer;
  white-space: nowrap;
}

.btn-secondary:disabled { opacity: .55; cursor: not-allowed; }

.key-error {
  display: none;
  font-size: 12px;
  color: #7a1f1f;
  background: #ffe5e5;
  border-radius: 8px;
  padding: 8px 12px;
}

.key-hint {
  font-size: 12px;
  color: var(--ink-soft);
}

.onboard-footer {
  font-size: 12px;
  color: var(--ink-soft);
  text-align: center;
}

/* ═══════════════════════════════════════════
   APP SHELL
═══════════════════════════════════════════ */

.app {
  width: 100%;
  height: 100vh;
  padding: clamp(12px, 1.5vw, 18px);
  display: flex;
  flex-direction: column;
  gap: var(--gap);
  --sidebar: clamp(280px, 22vw, 380px);
}

/* ─── Header ─────────────────────────────── */

.header {
  background: var(--panel);
  border-radius: var(--radius);
  padding: 14px 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-shrink: 0;
}

.brand {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 22px;
  font-weight: 900;
  letter-spacing: -0.3px;
}

.brand svg { width: 22px; height: 22px; stroke: var(--ink); }

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

.powered-link {
  font-size: 12px;
  color: var(--ink-mid);
  text-decoration: none;
}

.powered-link:hover { text-decoration: underline; }

.pill {
  border-radius: 999px;
  padding: 7px 14px;
  font-size: 12px;
  font-weight: 600;
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.mode-pill { background: var(--sage); }

.key-pill {
  background: var(--mint);
  border: none;
  cursor: pointer;
  font-family: inherit;
  color: var(--ink);
}

.key-pill svg { width: 13px; height: 13px; stroke: var(--ink); }

/* ─── Main layout ────────────────────────── */

.main {
  display: flex;
  gap: var(--gap);
  flex: 1;
  min-height: 0;
}

.left {
  width: var(--sidebar);
  display: flex;
  flex-direction: column;
  gap: var(--gap);
  flex-shrink: 0;
}

.right {
  flex: 1;
  min-width: 0;
  display: flex;
  flex-direction: column;
  gap: var(--gap);
  opacity: 85%;
}

.card {
  background: var(--panel);
  border-radius: var(--radius);
}

.header,
.card,
.deck,
.player {
  border: 1px solid rgba(19, 34, 57, 0.16);
  box-shadow: 0 10px 26px rgba(8, 21, 40, 0.28);
}

/* ─── Drop card ──────────────────────────── */

.drop-card {
  padding: 22px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.drop-title { font-size: 22px; font-weight: 800; line-height: 1.1; }
.drop-desc  { font-size: 13px; color: var(--ink-mid); line-height: 1.5; }

.zone {
  height: 150px;
  background: var(--mint);
  border: 2px dashed var(--ink);
  border-radius: 14px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-size: 14px;
  font-weight: 500;
  cursor: pointer;
  position: relative;
  transition: background 0.15s, transform 0.12s;
  user-select: none;
}

.zone:hover     { background: var(--sage); }
.zone.is-dragging { transform: scale(1.01); background: var(--sage); border-style: solid; }

.upload-icon { width: 28px; height: 28px; stroke: var(--ink); pointer-events: none; }

.zone span { pointer-events: none; color: var(--ink-mid); font-size: 13px; }

.file-input {
  position: absolute;
  inset: 0;
  opacity: 0;
  cursor: pointer;
  /* prevent click passthrough causing double dialog */
  pointer-events: none;
}

/* ─── Chips card ─────────────────────────── */

.chips-card {
  padding: 18px;
  display: flex;
  flex-direction: column;
  gap: 10px;
  flex: 1;
  min-height: 0;
}

.chips-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
}

.chips-title {
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 1.2px;
  color: var(--ink-soft);
}

.chips-status {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 12px;
  color: var(--ink-soft);
}

.spinner {
  width: 11px; height: 11px;
  border-radius: 50%;
  border: 2px solid rgba(26,26,26,.2);
  border-top-color: var(--ink);
  animation: spin .8s linear infinite;
  opacity: 0;
  flex-shrink: 0;
}

.chips-status.is-active .spinner { opacity: 1; }

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

.parsed-list {
  display: flex;
  flex-direction: column;
  gap: 7px;
  overflow-y: auto;
  flex: 1;
  padding-right: 2px;
}

.chip-empty {
  font-size: 13px;
  color: var(--ink-soft);
  text-align: center;
  padding: 20px 0;
}

.doc-chip {
  background: var(--steel);
  border-radius: 12px;
  padding: 10px 12px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
}

.doc-meta { display: flex; flex-direction: column; gap: 3px; min-width: 0; flex: 1; }

.doc-name {
  font-size: 13px;
  font-weight: 600;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.doc-sub { font-size: 11px; color: var(--ink-soft); }

.doc-actions { display: flex; align-items: center; gap: 6px; flex-shrink: 0; }

.equip-btn {
  border: 2px solid var(--ink);
  border-radius: 999px;
  padding: 5px 10px;
  background: var(--panel);
  font-family: inherit;
  font-size: 11px;
  font-weight: 600;
  cursor: pointer;
}

.equip-btn.is-on { background: var(--sage); }

.del-btn {
  border: 2px solid transparent;
  border-radius: 999px;
  width: 28px; height: 28px;
  background: transparent;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 0;
  color: var(--ink-soft);
  transition: background .12s, color .12s;
}

.del-btn svg { width: 14px; height: 14px; stroke: currentColor; }

.del-btn:hover { background: #ffe5e5; color: var(--bad); border-color: var(--bad); }

/* ═══════════════════════════════════════════
   DECK
═══════════════════════════════════════════ */

.deck {
  flex: 1;
  background: var(--steel);
  border-radius: var(--radius);
  padding: 24px 28px;
  display: flex;
  flex-direction: column;
  gap: 16px;
  min-height: 0;
}

.deck-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  flex-shrink: 0;
}

.deck-title   { font-size: 24px; font-weight: 900; }
.deck-hint    { font-size: 13px; color: var(--ink-mid); margin-top: -8px; flex-shrink: 0; }
.deck-counter { font-size: 13px; font-weight: 600; color: var(--ink-soft); white-space: nowrap; }

/* ─── Card stack scene ───────────────────── */

.stack-scene {
  flex: 1;
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 0;
}

/* Stacked flash cards */
.flash-card {
  position: absolute;
  width: min(340px, 70%);
  aspect-ratio: 3 / 4;
  background: #fff5e3;
  border: 2px solid var(--ink);
  border-radius: 22px;
  padding: 28px 24px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  user-select: none;
  cursor: grab;
  transition: transform 0.35s cubic-bezier(.34,1.56,.64,1), opacity 0.2s;
  will-change: transform;
}

/* Depth transforms — each card behind is shifted outward */
.flash-card.is-top {
  transform: rotate(-2deg) translate(0px, 0px);
  z-index: 3;
  box-shadow: 0 16px 28px rgba(8, 21, 40, 0.32);
}

.flash-card.is-mid {
  transform: rotate(4deg) translate(22px, 14px);
  z-index: 2;
  opacity: 0.85;
}

.flash-card.is-bot {
  transform: rotate(-6deg) translate(-18px, 22px);
  z-index: 1;
  opacity: 0.65;
}

.flash-card.is-top:active { cursor: grabbing; }

.fc-statement {
  font-size: clamp(18px, 2.2vw, 26px);
  font-weight: 700;
  line-height: 1.25;
  color: var(--ink);
  overflow: hidden;
  display: -webkit-box;
  -webkit-line-clamp: 7;
  -webkit-box-orient: vertical;
}

.fc-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
}

.fc-source {
  font-size: 11px;
  color: var(--ink-soft);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  max-width: 60%;
}

.fc-badge {
  font-size: 11px;
  font-weight: 700;
  background: var(--sage);
  border-radius: 999px;
  padding: 4px 10px;
  white-space: nowrap;
}

/* Placeholder when no cards */
.card-placeholder {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 12px;
  color: var(--ink-soft);
  pointer-events: none;
}

.card-placeholder svg { width: 40px; height: 40px; stroke: currentColor; opacity: .5; }
.card-placeholder span { font-size: 14px; }

/* Swipe hint labels */
.swipe-label {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  font-size: 28px;
  font-weight: 900;
  letter-spacing: 2px;
  opacity: 0;
  pointer-events: none;
  z-index: 10;
  transition: opacity 0.08s;
  border: 3px solid currentColor;
  border-radius: 8px;
  padding: 6px 14px;
}

.label-true  { right: 12%; color: var(--good); }
.label-false { left: 12%;  color: var(--bad); }

/* ─── Feedback bar ───────────────────────── */

.feedback-bar {
  flex-shrink: 0;
  border-radius: 14px;
  padding: 14px 18px;
  display: flex;
  align-items: flex-start;
  gap: 12px;
  font-size: 14px;
  font-weight: 600;
  line-height: 1.45;
  transition: opacity 0.2s;
}

.feedback-bar.hidden { opacity: 0; pointer-events: none; background: transparent; }

.feedback-bar.fb-good {
  background: #d4edda;
  color: #1a5c2a;
}

.feedback-bar.fb-bad {
  background: #ffe0de;
  color: #7a1f1f;
}

.fb-icon { width: 20px; height: 20px; stroke: currentColor; flex-shrink: 0; margin-top: 1px; }

.fb-text { flex: 1; }

/* ═══════════════════════════════════════════
   AUDIO PLAYER FOOTER
═══════════════════════════════════════════ */

.player {
  background: white;
  border-radius: var(--radius);
  padding: 14px 20px;
  display: flex;
  align-items: center;
  gap: 14px;
  flex-shrink: 0;
}

.play-btn {
  width: 44px; height: 44px;
  border-radius: 999px;
  border: 2px solid var(--ink);
  background: var(--ink);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  flex-shrink: 0;
  transition: transform 0.1s;
}

.play-btn:hover { transform: scale(1.06); }
.play-btn.is-loading { opacity: .6; cursor: default; }
.play-btn svg { width: 18px; height: 18px; stroke: #fff; }

.player-body { flex: 1; display: flex; flex-direction: column; gap: 6px; min-width: 0; }

.player-label {
  font-size: 12px;
  color: var(--ink-soft);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.progress {
  height: 8px;
  background: var(--steel);
  border-radius: 999px;
  overflow: hidden;
  cursor: pointer;
}

.prog-fill {
  height: 100%;
  width: 0;
  background: var(--rust);
  border-radius: 999px;
  transition: width 0.1s linear;
}

.speed-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  background: var(--sage);
  border: 2px solid var(--ink);
  border-radius: 999px;
  padding: 7px 12px;
  font-family: inherit;
  font-size: 12px;
  font-weight: 700;
  cursor: pointer;
  flex-shrink: 0;
}

/* ═══════════════════════════════════════════
   RESPONSIVE
═══════════════════════════════════════════ */

@media (max-width: 1100px) {
  .main   { flex-direction: column; }
  .left   { width: 100%; flex-direction: row; flex-shrink: 0; }
  .drop-card { flex: 1; }
  .chips-card { flex: 1; }
}

@media (max-width: 700px) {
  .left { flex-direction: column; }
  .onboard-card { padding: 28px 22px; }
  .onboard-title { font-size: 28px; }
}

/* ═══════════════════════════════════════════
   NEWSLETTER STEP
═══════════════════════════════════════════ */

.newsletter-overlay {
  align-items: center;
  justify-content: center;
  padding: 24px;
}

.newsletter-card {
  border: 2px solid var(--ink);
  border-radius: 24px;
  box-shadow: 8px 8px 0 var(--ink);
  width: min(960px, calc(100vw - 48px));
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

.newsletter-header {
  padding: 24px 32px 20px;
  border-bottom: 2px solid rgba(26,26,26,.1);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.newsletter-tagline {
  font-size: 13px;
  color: var(--ink-soft);
  font-weight: 600;
}

.newsletter-body {
  display: flex;
  min-height: 0;
}

.newsletter-copy {
  width: 320px;
  flex-shrink: 0;
  padding: 32px;
  display: flex;
  flex-direction: column;
  gap: 16px;
  border-right: 2px solid rgba(26,26,26,.1);
}

.newsletter-title {
  font-size: 28px;
  font-weight: 900;
  line-height: 1.15;
  margin: 0;
}

.newsletter-sub {
  font-size: 14px;
  line-height: 1.65;
  color: var(--ink-mid);
  margin: 0;
}

.newsletter-perks {
  display: flex;
  flex-direction: column;
  gap: 9px;
}

.perk-row {
  display: flex;
  gap: 8px;
  align-items: center;
  font-size: 13px;
  color: var(--ink-mid);
}

.perk-row svg { width: 16px; height: 16px; stroke: var(--ink); }

.newsletter-form-wrap {
  flex: 1;
  min-width: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 34px;
}

.nl-form {
  width: min(480px, 100%);
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.nl-field { display: flex; flex-direction: column; gap: 8px; }

.nl-label {
  font-size: 13px;
  font-weight: 700;
  color: var(--ink-mid);
}

.nl-input {
  border: 2px solid var(--ink);
  border-radius: 14px;
  padding: 12px 14px;
  font-size: 14px;
  background: #fff;
  font-family: inherit;
  color: var(--ink);
  outline: none;
}

.nl-input:focus { box-shadow: 0 0 0 3px rgba(26,26,26,.15); }

.nl-submit { margin-top: 8px; }

.nl-submit:disabled {
  opacity: .65;
  cursor: not-allowed;
}

.nl-error {
  min-height: 18px;
  font-size: 12px;
  color: #7a1f1f;
}

.nl-success {
  width: min(480px, 100%);
  border: 2px solid var(--good);
  background: #eaf8f0;
  border-radius: 14px;
  padding: 14px 16px;
  display: flex;
  align-items: flex-start;
  gap: 10px;
}

.nl-success svg { width: 20px; height: 20px; stroke: var(--good); flex-shrink: 0; }

.nl-success strong {
  font-size: 14px;
  display: block;
  margin-bottom: 4px;
}

.nl-success p {
  margin: 0;
  font-size: 13px;
  color: var(--ink-mid);
}

.hidden { display: none !important; }

.newsletter-footer {
  padding: 15px 32px;
  border-top: 2px solid rgba(26,26,26,.1);
  font-size: 13px;
  color: var(--ink-soft);
  display: flex;
  align-items: center;
  gap: 8px;
}

.link-btn {
  background: none;
  border: none;
  color: var(--ink-mid);
  font-family: inherit;
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
  text-decoration: underline;
  padding: 0;
}

.link-btn:hover { color: var(--ink); }

@media (max-width: 900px) {
  .newsletter-body { flex-direction: column; }
  .newsletter-copy {
    width: 100%;
    border-right: none;
    border-bottom: 2px solid rgba(26,26,26,.1);
  }
  .newsletter-form-wrap { padding: 22px; }
}

@media (max-width: 700px) {
  .newsletter-header,
  .newsletter-copy,
  .newsletter-footer { padding-left: 20px; padding-right: 20px; }
}