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

/* ===== TOKENS ===== */
:root {
  --ink:        #2B2520;
  --ink-mid:    #574E45;
  --ink-soft:   #8A7B6F;
  --dust:       #d4924a;
  --ochre:      #c07830;
  --shadow:     #2d3a5c;
  --dark:       #161e36;
  --haze:       #8fa4b8;
  --teal:       #7ab8a0;
  --palm:       #3d6b52;
  --paper:      #f0f2f7;
  --chalk:      #e4e8f0;
  --fog:        #9aaabf;
  --craft:      #5a4a7a;
  --divider:    rgba(154,170,191,0.45);
  --warm-shadow: rgba(45,58,92,0.10);
}

/* ===== NOISE TEXTURE ===== */
body::after {
  content: '';
  position: fixed; inset: 0;
  pointer-events: none; z-index: 9999; opacity: 0.06;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='300' height='300'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.75' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='300' height='300' filter='url(%23n)' opacity='1'/%3E%3C/svg%3E");
  background-size: 200px 200px;
}

/* ===== BASE ===== */
html { font-size: 16px; }

body {
  font-family: 'Libre Baskerville', Georgia, serif;
  color: var(--ink);
  min-height: 100vh;
  background-color: var(--paper);
  background-image:
    linear-gradient(160deg, #5da0b8 0%, #6db4c8 40%, #7abbc0 100%),
    url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='300' height='300'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.75' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='300' height='300' filter='url(%23n)' opacity='0.045'/%3E%3C/svg%3E");
  background-blend-mode: normal, overlay;
  line-height: 1.65;
}

/* Vignette */
body::before {
  content: '';
  position: fixed; inset: 0;
  pointer-events: none; z-index: 0;
  background: radial-gradient(ellipse at 50% 50%, transparent 55%, rgba(30,55,70,0.28) 100%);
}

body.locked { overflow: hidden; }

/* ===== LOGIN ===== */
.login-screen {
  position: fixed; inset: 0;
  display: flex; justify-content: flex-start; align-items: center;
  padding-left: 8%;
  background:
    linear-gradient(to right, rgba(93,160,184,0.88) 0%, rgba(93,160,184,0.62) 40%, rgba(122,187,192,0.42) 100%),
    url('cover.jpg');
  background-size: cover; background-position: 75% center; background-repeat: no-repeat;
  z-index: 999;
}
@media (max-width: 768px) {
  .login-screen { justify-content: center; padding-left: 0; background-position: center; }
}
.login-box {
  text-align: center; padding: 1.8rem 2rem;
  background: rgba(255,255,255,0.22);
  backdrop-filter: blur(12px);
  border-radius: 12px; width: 90%; max-width: 320px;
  box-shadow: 0 10px 30px rgba(0,0,0,0.18), inset 0 0 0 1px rgba(0,0,0,0.05);
}
.login-title {
  font-family: 'Libre Baskerville', serif; font-style: italic;
  font-size: 1.9rem; color: white;
}
.entry-prompt { color: rgba(255,255,255,0.9); margin: 0.5rem 0 1rem; font-family: 'Patrick Hand', cursive; }
.login-box input {
  width: 100%; padding: 0.7rem; border: none; border-radius: 6px;
  background: rgba(255,255,255,0.3); color: white;
  font-family: 'Patrick Hand', cursive; font-size: 1rem; outline: none;
}
.login-box input::placeholder { color: rgba(255,255,255,0.7); }
.login-box button {
  margin-top: 1rem; padding: 0.6rem; width: 100%;
  border: none; border-radius: 20px; background: #D65A4A; color: white;
  cursor: pointer; font-family: 'Patrick Hand', cursive; font-size: 1rem;
  transition: background 150ms ease;
  box-shadow: 0 3px 8px rgba(0,0,0,0.12), inset 0 1px 0 rgba(255,255,255,0.6);
}
.login-box button:hover { background: #c04e3f; }

/* ===== MASTHEAD ===== */
.masthead {
  text-align: center; padding: 3rem 1rem 1.5rem;
  position: relative; z-index: 1; transition: opacity 200ms ease;
}
.masthead-label {
  color: rgba(255,255,255,0.72); font-size: 0.78rem;
  letter-spacing: 1.5px; text-transform: uppercase; font-family: 'Patrick Hand', cursive;
}
.masthead h1 {
  font-family: 'Libre Baskerville', serif; font-style: italic;
  color: white; font-size: clamp(1.8rem, 5vw, 2.8rem); margin-top: 0.5rem;
  text-shadow: 0 2px 8px rgba(0,0,0,0.22); letter-spacing: 0.2px;
}
.masthead-author { color: rgba(255,255,255,0.82); margin-top: 0.3rem; font-family: 'Patrick Hand', cursive; }

/* ===== NAV ===== */
.zone-nav-wrap {
  display: flex; justify-content: center;
  margin-top: 0.5rem; padding: 0 1rem;
  position: relative; z-index: 1; transition: opacity 200ms ease;
}
.zone-nav {
  display: flex; flex-wrap: wrap; justify-content: center; gap: 6px;
}
.zone-nav button {
  background: rgba(255,255,255,0.25); border: none;
  padding: 0.5rem 0.85rem; color: white; cursor: pointer;
  border-radius: 20px; font-family: 'Patrick Hand', cursive; font-size: 0.88rem;
  transition: background 150ms ease; display: flex; align-items: center; gap: 0.35rem;
}
.zone-nav button:hover { background: rgba(255,255,255,0.38); }
.zone-nav button.active {
  background: #D65A4A;
  box-shadow: 0 3px 8px rgba(0,0,0,0.18), inset 0 1px 0 rgba(255,255,255,0.25);
}
.nav-num {
  font-size: 0.68rem; background: rgba(255,255,255,0.2);
  border-radius: 50%; width: 16px; height: 16px;
  display: inline-flex; align-items: center; justify-content: center; flex-shrink: 0;
}
.zone-nav button.active .nav-num { background: rgba(255,255,255,0.3); }

/* ===== MAIN ===== */
main {
  max-width: 760px; margin: 1.5rem auto;
  padding: 2rem 1.8rem 5rem;
  position: relative; z-index: 1;
  background: rgba(255,255,255,0.88);
  border-radius: 16px;
  box-shadow: 0 10px 30px rgba(0,0,0,0.18), inset 0 0 0 1px rgba(0,0,0,0.05);
}
@media (max-width: 600px) { main { margin: 0.8rem; padding: 1.4rem 1.2rem 4rem; border-radius: 12px; } }

/* ===== ZONE BASE ===== */
.zone { display: none; opacity: 0; }
.zone.active { display: block; opacity: 1; transition: opacity 180ms ease; }

/* Zone header */
.zone-header { margin-bottom: 1.8rem; }
.zone-subtitle {
  font-family: 'Patrick Hand', cursive; font-size: 0.68rem;
  letter-spacing: 0.16em; text-transform: uppercase;
  color: var(--ink-soft); margin-bottom: 0.35rem; opacity: 0.7;
}
.zone h2 {
  font-family: 'Libre Baskerville', serif; font-style: italic;
  font-size: 1.85rem; color: var(--ink); letter-spacing: 0.1px;
  padding-bottom: 0.55rem; border-bottom: 1.5px solid var(--divider);
  margin-bottom: 0.7rem;
}
.zone-teacher-note {
  font-family: 'Patrick Hand', cursive; font-size: 0.78rem;
  color: var(--ink-soft); border-left: 2px solid var(--divider);
  padding-left: 0.8rem; line-height: 1.55; max-width: 560px; opacity: 0.65;
}

/* ===== SURFACE SYSTEM (ported from Charlotte's Web) ===== */
.surface-dense {
  background: rgba(240,242,247,0.7);
  border: 1px solid var(--divider);
  border-left: 3px solid var(--ochre);
  border-radius: 0 5px 5px 0;
  padding: 1.4rem 1.5rem;
  margin-bottom: 1.4rem;
}
.surface-light {
  background: rgba(255,255,255,0.55);
  border: 1px solid var(--divider);
  border-radius: 5px;
  padding: 1.6rem 1.8rem;
  margin-bottom: 1.4rem;
  box-shadow: 0 4px 16px var(--warm-shadow);
}

/* ===== SHARED WRITING SURFACE ===== */
.thinking-area {
  width: 100%; min-height: 110px;
  background: rgba(255,255,255,0.92);
  border: 1px solid var(--divider); border-radius: 5px;
  padding: 0.85rem 1rem;
  font-family: 'Patrick Hand', cursive; font-size: 1.05rem;
  color: var(--ink); line-height: 1.9; resize: vertical; outline: none;
  transition: border-color 0.18s, box-shadow 0.18s;
  background-image: repeating-linear-gradient(transparent, transparent 42px, rgba(154,170,191,0.2) 42px, rgba(154,170,191,0.2) 43px);
  background-attachment: local;
  box-shadow: 0 4px 12px rgba(0,0,0,0.08), inset 0 1px 0 rgba(255,255,255,0.6);
}
.thinking-area:focus {
  border-color: var(--ochre);
  box-shadow: 0 4px 16px rgba(0,0,0,0.12), inset 0 1px 0 rgba(255,255,255,0.6);
}
.thinking-area::placeholder { color: var(--ink-soft); font-style: italic; opacity: 0.6; }

.word-count {
  font-family: 'Patrick Hand', cursive; font-size: 0.72rem;
  color: var(--ink-soft); text-align: right; margin-top: 0.3rem; margin-bottom: 1rem;
}
.open-write-label {
  font-family: 'Patrick Hand', cursive; font-size: 0.78rem;
  color: var(--ink-soft); text-transform: uppercase; letter-spacing: 0.12em;
  margin-bottom: 0.65rem; margin-top: 1.8rem; opacity: 0.75;
}
.surface-divider { height: 1px; background: var(--divider); margin: 1.6rem 0; }

/* ===== VOCAB ===== */
.vocab-grid {
  display: grid; grid-template-columns: repeat(auto-fill, minmax(175px, 1fr)); gap: 0.85rem;
  margin-bottom: 0.5rem;
}
.vocab-card {
  background: var(--paper); border-radius: 5px;
  border-left: 4px solid var(--dust); border-top: 1px solid var(--divider);
  border-right: 1px solid var(--divider); border-bottom: 1px solid var(--divider);
  padding: 1.1rem; cursor: pointer; min-height: 100px;
  transition: transform 0.18s, border-color 0.18s, box-shadow 0.18s;
  box-shadow: 2px 3px 0 var(--warm-shadow);
  position: relative; overflow: hidden;
}
.vocab-card:hover { transform: translateY(-2px); border-left-color: var(--ochre); box-shadow: 0 6px 18px rgba(0,0,0,0.1); }
.vocab-card.revealed { border-left-color: var(--palm); }
.vocab-back { display: none; }
.vocab-card.revealed .vocab-front { display: none; }
.vocab-card.revealed .vocab-back { display: block; }
.vocab-word { font-family: 'Libre Baskerville', serif; font-style: italic; font-size: 1.15rem; color: var(--shadow); }
.vocab-hint { font-family: 'Patrick Hand', cursive; font-size: 0.75rem; color: var(--fog); margin-top: 0.3rem; }
.vocab-def  { font-family: 'Patrick Hand', cursive; font-size: 0.88rem; color: var(--ink); margin-top: 0.5rem; line-height: 1.55; }

/* ===== QUIZ ===== */
.quiz-q {
  background: var(--paper); border-radius: 5px; padding: 1.4rem;
  margin-bottom: 1.1rem; border: 1px solid var(--divider);
  box-shadow: 2px 3px 0 var(--warm-shadow);
}
.quiz-q p { font-size: 0.97rem; margin-bottom: 1rem; color: var(--ink); line-height: 1.65; }
.q-num { font-family: 'Libre Baskerville', serif; font-style: italic; color: var(--ochre); margin-right: 0.3rem; }
.options { display: grid; grid-template-columns: 1fr 1fr; gap: 0.5rem; }
@media (max-width: 500px) { .options { grid-template-columns: 1fr; } }
.opt-btn {
  background: rgba(240,242,247,0.6); border: 1px solid var(--divider);
  border-radius: 4px; padding: 0.6rem 0.85rem;
  font-family: 'Patrick Hand', cursive; font-size: 0.92rem;
  cursor: pointer; text-align: left; color: var(--ink-mid);
  transition: all 0.14s;
}
.opt-btn:not(:disabled):hover { border-color: var(--fog); background: rgba(240,242,247,0.9); color: var(--ink); }
.opt-btn.correct { background: #dff0e0; border-color: var(--palm); color: var(--palm); font-weight: 700; }
.opt-btn.wrong   { background: #f5e0dc; border-color: #9e3a2a; color: #9e3a2a; }
.opt-btn.spent   { opacity: 0.45; }
.feedback {
  margin-top: 0.85rem; font-family: 'Patrick Hand', cursive;
  font-size: 0.9rem; line-height: 1.55; min-height: 1rem;
}
.fb-correct { color: var(--palm); }
.fb-wrong   { color: #9e3a2a; }
.score-line {
  font-family: 'Patrick Hand', cursive; font-size: 1rem;
  color: var(--shadow); margin-top: 1rem; padding: 0.8rem 1rem;
  background: var(--chalk); border-radius: 5px; border-left: 3px solid var(--ochre);
}

/* ===== CHARACTER MAP ===== */
.char-grid {
  display: grid; grid-template-columns: repeat(auto-fill, minmax(140px, 1fr)); gap: 0.75rem;
  margin-bottom: 1rem;
}
.char-node {
  background: rgba(240,242,247,0.55); border-radius: 5px;
  border: 1px solid var(--divider);
  padding: 1rem 0.8rem; text-align: center;
  cursor: pointer; transition: border-color 0.16s, background 0.16s;
}
.char-node:hover { border-color: var(--fog); background: rgba(240,242,247,0.85); }
.char-node.selected { border-color: var(--ink-mid); background: rgba(240,242,247,0.9); }
.char-initial {
  font-family: 'Libre Baskerville', serif; font-style: italic;
  font-size: 1.4rem; color: var(--ink-mid);
  margin-bottom: 0.4rem; line-height: 1;
}
.char-name  { font-family: 'Libre Baskerville', serif; font-style: italic; font-size: 1rem; color: var(--shadow); }
.char-role  { font-family: 'Patrick Hand', cursive; font-size: 0.75rem; color: var(--ochre); margin-top: 0.2rem; }

.char-expand-panel {
  margin-bottom: 0.5rem;
}
.char-expand-inner {
  background: rgba(255,255,255,0.65); border: 1px solid var(--divider);
  border-left: 3px solid var(--shadow); border-radius: 0 5px 5px 0;
  padding: 1.2rem 1.4rem; animation: slideIn 0.22s ease;
}
@keyframes slideIn { from { opacity: 0; transform: translateY(-6px); } to { opacity: 1; transform: none; } }
.char-expand-name {
  font-family: 'Libre Baskerville', serif; font-style: italic;
  font-size: 1.1rem; color: var(--shadow); margin-bottom: 0.65rem;
}
.char-expand-role { font-family: 'Patrick Hand', cursive; font-size: 0.8rem; color: var(--ink-soft); font-style: normal; margin-left: 0.4rem; }
.trait-row { display: flex; flex-wrap: wrap; gap: 0.4rem; margin-bottom: 0.85rem; }
.trait-tag {
  font-family: 'Patrick Hand', cursive; font-size: 0.8rem;
  background: var(--chalk); border: 1px solid var(--fog);
  border-radius: 20px; padding: 0.2rem 0.7rem; color: var(--ink-mid);
}
.char-think {
  font-family: 'Libre Baskerville', serif; font-style: italic;
  font-size: 0.9rem; color: var(--ink-mid); line-height: 1.65;
  border-top: 1px solid var(--divider); padding-top: 0.7rem;
}

/* ===== CRAFT ===== */
.craft-block { border-left-color: var(--craft); }
.craft-quote {
  font-family: 'Libre Baskerville', serif; font-style: italic;
  font-size: 1.05rem; color: var(--ink); line-height: 1.8;
  margin-bottom: 1rem; padding: 0.8rem 1rem;
  background: rgba(255,255,255,0.45); border-radius: 4px;
  border-left: 2.5px solid var(--dust);
}
.craft-highlight { color: var(--craft); font-weight: 700; }
.craft-question {
  font-family: 'Patrick Hand', cursive; font-size: 0.9rem;
  color: var(--shadow); margin-bottom: 0.7rem; line-height: 1.5;
}
.craft-ta { min-height: 80px; margin-bottom: 0.7rem; }
.craft-answer {
  display: none; margin-top: 0.6rem;
  background: white; border-radius: 4px; padding: 0.85rem 1rem;
  font-family: 'Patrick Hand', cursive; font-size: 0.9rem; line-height: 1.65;
  color: var(--ink); border-left: 3px solid var(--craft);
}
.craft-answer.visible { display: block; }

/* ===== CREATIVE ===== */
.entry-prompt {
  font-family: 'Libre Baskerville', serif; font-style: italic;
  font-size: 1.1rem; color: var(--ink); line-height: 1.7; margin-bottom: 0.9rem;
}
.chip-row { display: flex; flex-wrap: wrap; gap: 0.45rem; margin-bottom: 1rem; }
.prompt-chip {
  background: rgba(240,242,247,0.6); border: 1px solid var(--divider);
  border-radius: 20px; padding: 0.28rem 0.9rem;
  font-family: 'Patrick Hand', cursive; font-size: 0.82rem;
  cursor: pointer; color: var(--ink-mid); transition: border-color 0.13s, color 0.13s;
}
.prompt-chip:hover { border-color: var(--fog); color: var(--ink); background: rgba(240,242,247,0.9); }
.creative-ta { min-height: 220px; }

/* ===== REWRITE ===== */
.rewrite-source {
  margin-bottom: 1.6rem;
}
.rewrite-source-line {
  font-family: 'Libre Baskerville', serif; font-style: italic;
  font-size: 1.1rem; color: var(--ink); line-height: 1.75; margin-bottom: 0.5rem;
}
.rewrite-source-note {
  font-family: 'Patrick Hand', cursive; font-size: 0.82rem;
  color: var(--ink-soft); line-height: 1.5;
}
.rewrite-block { border-left-color: var(--shadow); }
.rewrite-label {
  font-family: 'Libre Baskerville', serif; font-style: italic;
  font-size: 1rem; color: var(--shadow); margin-bottom: 0.4rem;
}
.rewrite-instruction {
  font-family: 'Patrick Hand', cursive; font-size: 0.88rem;
  color: var(--ink-mid); line-height: 1.6; margin-bottom: 0.8rem;
}
.rewrite-ta { min-height: 80px; margin-bottom: 0.7rem; }
.rewrite-example {
  display: none; margin-top: 0.5rem;
  font-family: 'Libre Baskerville', serif; font-style: italic;
  font-size: 0.92rem; color: var(--ink-mid); line-height: 1.7;
  padding: 0.75rem 1rem;
  background: white; border-left: 3px solid var(--fog); border-radius: 0 4px 4px 0;
}
.rewrite-example.visible { display: block; }

/* ===== EXTENSION ===== */
.ext-block { border-left-color: var(--haze); }
.ext-q-text {
  font-family: 'Libre Baskerville', serif; font-size: 1rem;
  color: var(--ink); line-height: 1.7; margin-bottom: 0.8rem;
}
.ext-ta { min-height: 90px; margin-bottom: 0.7rem; }
.ext-answer {
  display: none; margin-top: 0.5rem;
  background: white; border-radius: 4px; padding: 0.85rem 1rem;
  font-family: 'Patrick Hand', cursive; font-size: 0.9rem; line-height: 1.65;
  color: var(--ink); border-left: 3px solid var(--teal);
}
.ext-answer.visible { display: block; }

/* ===== REVEAL BUTTON ===== */
.reveal-btn {
  background: none; border: 1px solid var(--divider);
  border-radius: 4px; padding: 0.35rem 0.9rem;
  font-family: 'Patrick Hand', cursive; font-size: 0.82rem;
  cursor: pointer; color: var(--ink-soft); transition: border-color 0.14s, color 0.14s;
}
.reveal-btn:hover { border-color: var(--fog); color: var(--ink-mid); }

/* ===== TEACHER PANEL ===== */
#teacher-panel {
  display: none; position: fixed; bottom: 12px; left: 50%; transform: translateX(-50%);
  align-items: center; z-index: 1000;
  background: rgba(0,0,0,0.62); border-radius: 20px; padding: 0.4rem 1rem;
}
#teacher-panel.visible { display: flex; }
.teacher-label {
  font-family: 'Patrick Hand', cursive; font-size: 0.8rem; color: rgba(255,255,255,0.82);
}

/* ===== FOCUS MODE ===== */
body.focus-mode .masthead,
body.focus-mode .zone-nav-wrap { opacity: 0.2; }

/* ===== SCROLLBAR ===== */
::-webkit-scrollbar { width: 4px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--divider); border-radius: 2px; }

/* ===== ACT LOCKS ===== */
.zone-nav button.locked {
  opacity: .4;
  cursor: not-allowed;
}
.zone-nav button.locked::after {
  content: " 🔒";
}

/* ===== NAV ACT DIVIDERS ===== */
.nav-act-divider {
  font-family: 'Patrick Hand', cursive;
  font-size: 0.62rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: rgba(255,255,255,0.5);
  padding: 0.5rem 0.3rem 0.2rem;
  align-self: center;
  white-space: nowrap;
  pointer-events: none;
  border-left: 1px solid rgba(255,255,255,0.2);
  margin-left: 0.2rem;
  padding-left: 0.6rem;
}
.nav-act-divider:first-child {
  border-left: none;
  margin-left: 0;
  padding-left: 0.3rem;
}