/* ---- Kid-friendly Python Workshop styling ---- */
/* (badges + confetti styles are appended near the end of this file) */

:root {
  --bg: #1b1e2b;
  --panel: #252a3d;
  --panel-2: #2e3450;
  --ink: #eef1ff;
  --muted: #9aa3c7;
  --accent: #57c785;      /* turtle green */
  --accent-2: #ffb454;    /* level-up gold */
  --blue: #4ea1ff;
  --pink: #ff7eb6;
  --radius: 14px;
  font-size: 18px;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: "Comic Sans MS", "Trebuchet MS", system-ui, sans-serif;
  background: var(--bg);
  color: var(--ink);
  height: 100vh;
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

/* ---- Boot / loading screen ---- */
#boot {
  position: fixed; inset: 0; z-index: 100;
  background: radial-gradient(circle at 50% 35%, #2a3050, #14161f);
  display: flex; align-items: center; justify-content: center;
  transition: opacity .4s ease;
}
#boot.hidden { opacity: 0; pointer-events: none; }
.boot-box { text-align: center; max-width: 460px; padding: 24px; }
.boot-turtle { font-size: 70px; animation: bob 1.4s ease-in-out infinite; }
@keyframes bob { 0%,100%{transform:translateY(0)} 50%{transform:translateY(-12px)} }
.boot-box h1 { margin: 8px 0; }
.boot-box p { color: var(--muted); }
.boot-bar { height: 12px; background: #1a1d2b; border-radius: 99px; overflow: hidden; margin-top: 18px; }
#boot-fill { height: 100%; width: 10%; background: linear-gradient(90deg, var(--accent), var(--blue)); transition: width .3s; }

/* ---- Profile picker ---- */
#picker {
  position: fixed; inset: 0; z-index: 90;
  background: radial-gradient(circle at 50% 35%, #2a3050, #14161f);
  display: flex; align-items: center; justify-content: center;
  transition: opacity .3s ease;
}
#picker.hidden { opacity: 0; pointer-events: none; }
.picker-box { text-align: center; }
.picker-box h1 { margin: 6px 0 22px; }
#picker-buttons { display: flex; gap: 22px; justify-content: center; flex-wrap: wrap; }
.kid-btn {
  font-family: inherit; cursor: pointer; border: none;
  width: 160px; padding: 26px 18px; border-radius: 20px;
  background: var(--panel-2); color: var(--ink); font-size: 22px; font-weight: bold;
  box-shadow: 0 6px 0 #0004; transition: transform .12s;
}
.kid-btn:hover { transform: translateY(-4px); filter: brightness(1.12); }
.kid-btn .avatar { font-size: 54px; display: block; margin-bottom: 8px; }
.kid-btn .sub { display: block; font-size: 13px; font-weight: normal; color: var(--muted); margin-top: 6px; }

.who-chip {
  font-family: inherit; cursor: pointer; border: 1px solid #ffffff22;
  background: var(--panel-2); color: var(--ink); border-radius: 99px;
  padding: 6px 12px; font-size: 14px; font-weight: bold; margin-left: 14px;
}
.who-chip:hover { filter: brightness(1.15); }
.who-swap { color: var(--muted); margin-left: 4px; }

/* ---- Header ---- */
header {
  display: flex; align-items: center; justify-content: space-between;
  padding: 10px 18px; background: var(--panel); border-bottom: 2px solid #00000033;
}
.brand { font-size: 22px; font-weight: bold; }
.progress-wrap { display: flex; align-items: center; gap: 10px; }
.progress-bar { width: 220px; height: 12px; background: #161927; border-radius: 99px; overflow: hidden; }
#progress-fill { height: 100%; width: 0%; background: linear-gradient(90deg, var(--accent), var(--accent-2)); transition: width .3s; }
#progress-text { color: var(--muted); font-size: 15px; min-width: 56px; }

/* ---- App grid ---- */
#app { flex: 1; display: grid; grid-template-columns: 250px 1fr; min-height: 0; }

#sidebar { background: var(--panel); overflow-y: auto; padding: 10px; border-right: 2px solid #00000033; }
#lesson-list { list-style: none; margin: 0; padding: 0; }
#lesson-list li {
  padding: 10px 12px; margin: 4px 0; border-radius: 10px; cursor: pointer;
  font-size: 15px; line-height: 1.25; display: flex; gap: 8px; align-items: flex-start;
}
#lesson-list li:hover { background: var(--panel-2); }
#lesson-list li.active { background: var(--blue); color: #fff; font-weight: bold; }
#lesson-list li.done .tick { color: var(--accent); }
#lesson-list li .tick { width: 18px; flex: none; }
#lesson-list .unit-divider {
  font-size: 12px; text-transform: uppercase; letter-spacing: .08em;
  color: var(--muted); padding: 14px 12px 4px; cursor: default;
}
#lesson-list .unit-divider:hover { background: none; }

/* ---- Stage ---- */
#stage { overflow-y: auto; padding: 18px 22px; display: flex; flex-direction: column; }
.lesson-head { display: flex; align-items: baseline; gap: 12px; flex-wrap: wrap; }
.unit-tag { background: var(--panel-2); color: var(--blue); padding: 3px 10px; border-radius: 99px; font-size: 13px; }
#lesson-title { margin: 6px 0 12px; font-size: 26px; }
#lesson-intro { line-height: 1.5; font-size: 17px; max-width: 70ch; }
#lesson-intro code, .task-box code, .levelup-box code {
  background: #11131d; padding: 1px 6px; border-radius: 6px; font-family: "SF Mono", Menlo, monospace; font-size: 15px; color: var(--accent-2);
}
#lesson-intro pre {
  background: #11131d; padding: 12px 14px; border-radius: 10px; overflow-x: auto;
  font-family: "SF Mono", Menlo, monospace; font-size: 14px; line-height: 1.4; border-left: 4px solid var(--blue);
}
.task-box {
  background: #1f2b22; border: 2px solid var(--accent); border-radius: var(--radius);
  padding: 12px 16px; margin: 16px 0 8px; max-width: 70ch;
}
.task-box::before { content: "🎯 Your turn"; display: block; font-weight: bold; color: var(--accent); margin-bottom: 6px; }
.levelup-box {
  background: #2e2614; border: 2px dashed var(--accent-2); border-radius: var(--radius);
  padding: 12px 16px; margin: 8px 0; max-width: 70ch;
}
.levelup-box:empty { display: none; }
.levelup-box::before { content: "⭐ Level up (extra challenge)"; display: block; font-weight: bold; color: var(--accent-2); margin-bottom: 6px; }

/* ---- Per-lesson checklist ---- */
.steps-box { margin: 12px 0 4px; max-width: 70ch; background: #1a2230; border: 2px solid #2e3a52; border-radius: var(--radius); padding: 10px 12px; }
.steps-box.hidden { display: none; }
.steps-head { font-weight: bold; color: var(--accent); margin-bottom: 6px; font-size: 14px; }
.step-row { display: flex; align-items: center; gap: 10px; padding: 7px 10px; border-radius: 10px; cursor: pointer; font-size: 15px; }
.step-row:hover { background: var(--panel-2); }
.step-row input { width: 20px; height: 20px; accent-color: var(--accent); cursor: pointer; flex: none; }
.step-row.done span { color: var(--muted); text-decoration: line-through; }

/* ---- Workspace ---- */
#workspace { display: grid; grid-template-columns: 1fr 580px; gap: 18px; margin-top: 18px; align-items: start; }
#editor-col { display: flex; flex-direction: column; min-width: 0; }
.toolbar { display: flex; align-items: center; gap: 8px; flex-wrap: wrap; margin-bottom: 8px; }
.speed { margin-left: auto; font-size: 13px; color: var(--muted); display: flex; align-items: center; gap: 6px; }
.speed input { width: 110px; }

.btn {
  border: none; border-radius: 10px; padding: 9px 14px; font-size: 15px; cursor: pointer;
  background: var(--panel-2); color: var(--ink); font-family: inherit; font-weight: bold;
}
.btn:hover { filter: brightness(1.15); }
.btn:active { transform: translateY(1px); }
.btn-run { background: var(--accent); color: #08210f; font-size: 16px; }
.btn-run.busy { opacity: .6; cursor: wait; }
.btn-done { background: var(--accent-2); color: #2a1d00; }
.btn-ghost { background: transparent; border: 1px solid #ffffff22; color: var(--muted); font-weight: normal; }

#editor { border-radius: 10px; overflow: hidden; border: 1px solid #ffffff14; }
.CodeMirror { height: auto; min-height: 240px; font-size: 15px; font-family: "SF Mono", Menlo, monospace; }
.CodeMirror-scroll { min-height: 240px; }

.console-head { display: flex; justify-content: space-between; align-items: center; margin: 12px 0 4px; color: var(--muted); font-size: 13px; }
.mini { background: none; border: none; color: var(--muted); cursor: pointer; font-size: 12px; text-decoration: underline; }
#console {
  background: #0d0f17; border-radius: 10px; padding: 12px; margin: 0; min-height: 90px; max-height: 220px; overflow-y: auto;
  font-family: "SF Mono", Menlo, monospace; font-size: 14px; line-height: 1.45; white-space: pre-wrap; word-break: break-word;
}
#console .err { color: #ff7b72; }
#console .ok { color: var(--accent); }
.err-help-wrap { margin-top: 8px; }
.err-help { font-size: 13px; padding: 7px 12px; background: var(--blue); color: #fff; }
.err-help:disabled { opacity: .5; cursor: default; }

/* ---- AI helper ---- */
#help { margin-top: 14px; border: 2px solid var(--blue); border-radius: var(--radius); padding: 12px; background: #1a2233; }
#help.hidden { display: none; }
.help-head { font-weight: bold; color: var(--blue); margin-bottom: 8px; display: flex; align-items: center; gap: 10px; flex-wrap: wrap; }
.help-actions { margin-left: auto; display: flex; gap: 8px; }
.help-actions .btn { font-size: 13px; padding: 5px 10px; }
#help-chat { max-height: 260px; overflow-y: auto; margin-bottom: 8px; display: flex; flex-direction: column; gap: 8px; }
#help-chat:empty { display: none; }
.bubble { padding: 8px 12px; border-radius: 12px; font-size: 15px; line-height: 1.45; max-width: 92%; white-space: pre-wrap; word-break: break-word; }
.bubble.me { align-self: flex-end; background: var(--blue); color: #fff; border-bottom-right-radius: 3px; }
.bubble.helper { align-self: flex-start; background: var(--panel-2); color: var(--ink); border-bottom-left-radius: 3px; }
.bubble.helper code { background: #11131d; padding: 1px 5px; border-radius: 5px; font-family: "SF Mono", Menlo, monospace; font-size: 13px; color: var(--accent-2); }
.bubble.helper pre { background: #0d0f17; padding: 10px; border-radius: 8px; overflow-x: auto; margin: 6px 0 0; }
.bubble.helper pre code { background: none; padding: 0; color: var(--accent); }
.bubble.thinking { color: var(--muted); font-style: italic; }
#help-form { display: flex; gap: 8px; }
#help-input { flex: 1; padding: 10px 12px; border-radius: 10px; border: 1px solid #ffffff22; background: #0d0f17; color: var(--ink); font-family: inherit; font-size: 15px; }
#help-input:focus { outline: none; border-color: var(--blue); }

/* ---- Canvas ---- */
#canvas-col { position: sticky; top: 0; }
#turtle-canvas {
  width: 100%; max-width: 580px; aspect-ratio: 1 / 1; height: auto;
  background: #fff; border-radius: var(--radius); box-shadow: 0 8px 28px #0006;
}
.canvas-hint { text-align: center; color: var(--muted); font-size: 13px; margin-top: 6px; }

/* ---- Lesson nav ---- */
.lesson-nav { display: flex; gap: 10px; align-items: center; margin: 22px 0 40px; }
.lesson-nav #next-btn { margin-left: auto; }

/* ---- Responsive: stack on narrow screens (iPad portrait, etc.) ---- */
@media (max-width: 1100px) {
  #workspace { grid-template-columns: 1fr; }
  #canvas-col { position: static; }
  #turtle-canvas { max-width: 480px; margin: 0 auto; display: block; }
}
@media (max-width: 760px) {
  #app { grid-template-columns: 1fr; }
  #sidebar { display: none; }
}

/* ---- Unit badges + celebration ---- */
.badges { display: flex; gap: 6px; flex-wrap: wrap; align-items: center; margin-left: 14px; }
.badge {
  display: inline-flex; align-items: center; gap: 4px;
  background: #2e2614; border: 1px solid var(--accent-2); color: var(--accent-2);
  border-radius: 99px; padding: 3px 9px; font-size: 12px; font-weight: bold;
  animation: badgePop .5s ease;
}
@keyframes badgePop { 0% { transform: scale(0); } 70% { transform: scale(1.2); } 100% { transform: scale(1); } }

#confetti { position: fixed; inset: 0; pointer-events: none; z-index: 200; overflow: hidden; }
.confetti-bit { position: absolute; top: -16px; width: 10px; height: 14px; border-radius: 2px; will-change: transform, opacity; }
@keyframes confettiFall {
  0% { transform: translateY(-20px) rotate(0deg); opacity: 1; }
  100% { transform: translateY(102vh) rotate(720deg); opacity: 1; }
}
.celebrate-toast {
  position: fixed; left: 50%; top: 28%; transform: translateX(-50%) scale(0.8);
  background: linear-gradient(135deg, var(--accent), var(--accent-2)); color: #08210f;
  padding: 18px 28px; border-radius: 18px; font-size: 22px; font-weight: bold;
  box-shadow: 0 12px 40px #0008; z-index: 201; text-align: center; opacity: 0;
  transition: opacity .3s ease, transform .3s ease;
}
.celebrate-toast.show { opacity: 1; transform: translateX(-50%) scale(1); }

/* ---- Save drawing + gallery ---- */
.canvas-actions { display: flex; gap: 8px; justify-content: center; margin-top: 8px; }
.canvas-actions .btn { font-size: 14px; }

.modal {
  position: fixed; inset: 0; z-index: 150; background: #0009;
  display: flex; align-items: center; justify-content: center; padding: 20px;
}
.modal.hidden { display: none; }
.modal-box {
  background: var(--panel); border-radius: var(--radius); width: min(900px, 100%);
  max-height: 86vh; overflow: hidden; display: flex; flex-direction: column;
  box-shadow: 0 20px 60px #000a;
}
.modal-head { display: flex; align-items: center; justify-content: space-between; padding: 14px 18px; border-bottom: 1px solid #ffffff1a; }
.modal-head h2 { margin: 0; font-size: 20px; }
#gallery-grid {
  padding: 16px; overflow-y: auto;
  display: grid; grid-template-columns: repeat(auto-fill, minmax(180px, 1fr)); gap: 14px;
}
#gallery-grid .empty { color: var(--muted); grid-column: 1 / -1; text-align: center; padding: 30px; }
.gal-card { background: var(--panel-2); border-radius: 12px; overflow: hidden; }
.gal-card img { width: 100%; display: block; background: #fff; aspect-ratio: 1/1; object-fit: contain; }
.gal-meta { padding: 8px 10px; display: flex; align-items: center; justify-content: space-between; gap: 8px; }
.gal-meta .gal-title { font-size: 14px; font-weight: bold; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.gal-del { background: none; border: none; color: var(--muted); cursor: pointer; font-size: 15px; }
.gal-del:hover { color: #ff7b72; }

/* ---- Login / signup (accounts mode) ---- */
.login-box { display: flex; flex-direction: column; gap: 12px; width: min(340px, 88vw); margin: 0 auto; }
.login-box input {
  padding: 14px 16px; border-radius: 12px; border: 2px solid #ffffff22;
  background: #0d0f17; color: var(--ink); font-family: inherit; font-size: 18px; text-align: center;
}
.login-box input:focus { outline: none; border-color: var(--blue); }
.login-actions { display: flex; gap: 10px; }
.login-actions .btn { flex: 1; padding: 12px; font-size: 16px; }
.login-msg { min-height: 20px; color: var(--accent-2); font-size: 14px; }
.login-hint { color: var(--muted); font-size: 13px; line-height: 1.4; }