/* lab-ai-safety.css — AI Safety Lab — purple/cyan dark theme */
:root {
  --ai-purple: #7c3aed;
  --ai-purple-light: #a855f7;
  --ai-cyan: #06b6d4;
  --ai-cyan-light: #67e8f9;
  --ai-dark: #0f0a1e;
  --ai-dark-2: #1a1030;
  --ai-dark-3: #261d42;
  --ai-dark-4: #332552;
  --ai-text: #e2d9f3;
  --ai-text-dim: #9b89c4;
  --ai-border: rgba(124,58,237,0.25);
  --ai-success: #10b981;
  --ai-danger: #ef4444;
  --ai-warning: #f59e0b;
}
* { box-sizing: border-box; margin: 0; padding: 0; }
body { background: var(--ai-dark); color: var(--ai-text); font-family: 'Satoshi', system-ui, sans-serif; min-height: 100vh; }
/* Nav */
.ai-nav { background: rgba(15,10,30,0.95); backdrop-filter: blur(12px); border-bottom: 1px solid var(--ai-border); position: sticky; top: 0; z-index: 50; padding: 0 1.5rem; }
.ai-nav-inner { max-width: 900px; margin: 0 auto; display: flex; align-items: center; justify-content: space-between; height: 56px; }
.ai-brand { display: flex; align-items: center; gap: .5rem; font-weight: 700; font-size: .95rem; color: var(--ai-text); text-decoration: none; }
.ai-brand-mark { font-size: 1.2rem; }
.ai-brand-tag { background: var(--ai-purple); color: #fff; font-size: .7rem; font-weight: 600; padding: .2rem .5rem; border-radius: 99px; letter-spacing: .05em; }
.ai-nav-back { color: var(--ai-text-dim); font-size: .9rem; text-decoration: none; display: flex; align-items: center; gap: .35rem; }
.ai-nav-back:hover { color: var(--ai-cyan); }
/* Hero */
.ai-hero { background: linear-gradient(135deg, var(--ai-dark) 0%, var(--ai-dark-2) 50%, #1e0a3c 100%); padding: 2.5rem 1.5rem 1.5rem; text-align: center; }
.ai-hero-badge { display: inline-flex; align-items: center; gap: .4rem; background: rgba(124,58,237,0.2); border: 1px solid rgba(124,58,237,0.4); color: var(--ai-purple-light); font-size: .75rem; font-weight: 700; letter-spacing: .1em; padding: .35rem .8rem; border-radius: 99px; margin-bottom: 1rem; }
.ai-hero h1 { font-size: clamp(1.6rem, 4vw, 2.4rem); font-weight: 800; color: #fff; margin-bottom: .6rem; }
.ai-hero p { color: var(--ai-text-dim); font-size: 1rem; max-width: 520px; margin: 0 auto 1.5rem; }
.ai-hero-meta { display: flex; gap: 1.5rem; justify-content: center; flex-wrap: wrap; }
.ai-meta-chip { display: flex; align-items: center; gap: .4rem; color: var(--ai-text-dim); font-size: .85rem; }
.ai-meta-chip strong { color: var(--ai-cyan); }
/* Progress */
.ai-progress-bar { background: var(--ai-dark-2); border-bottom: 1px solid var(--ai-border); padding: .75rem 1.5rem; }
.ai-progress-inner { max-width: 900px; margin: 0 auto; display: flex; align-items: center; gap: 1rem; }
.ai-progress-steps { display: flex; gap: .4rem; flex: 1; }
.ai-step-dot { flex: 1; height: 4px; border-radius: 2px; background: var(--ai-dark-4); transition: background .3s; cursor: default; position: relative; }
.ai-step-dot.done { background: var(--ai-purple); }
.ai-step-dot.active { background: var(--ai-cyan); }
.ai-progress-label { font-size: .8rem; color: var(--ai-text-dim); white-space: nowrap; }
/* Main layout */
.ai-lab-body { max-width: 900px; margin: 0 auto; padding: 2rem 1.5rem; }
/* Level card */
.ai-level-card { background: var(--ai-dark-2); border: 1px solid var(--ai-border); border-radius: 16px; padding: 2rem; margin-bottom: 1.5rem; }
.ai-level-header { display: flex; align-items: center; gap: .75rem; margin-bottom: 1.5rem; }
.ai-level-num { background: linear-gradient(135deg, var(--ai-purple), var(--ai-cyan)); color: #fff; font-weight: 700; font-size: .8rem; width: 2rem; height: 2rem; border-radius: 8px; display: flex; align-items: center; justify-content: center; flex-shrink: 0; }
.ai-level-title { font-size: 1.2rem; font-weight: 700; color: #fff; }
.ai-level-desc { font-size: .9rem; color: var(--ai-text-dim); margin-top: .2rem; }
/* System prompt toggle */
.ai-sys-toggle { background: none; border: 1px solid var(--ai-border); color: var(--ai-text-dim); font-size: .8rem; padding: .35rem .75rem; border-radius: 8px; cursor: pointer; margin-bottom: .75rem; transition: all .2s; }
.ai-sys-toggle:hover { border-color: var(--ai-purple); color: var(--ai-purple-light); }
.ai-sys-prompt-box { background: var(--ai-dark-4); border: 1px solid rgba(124,58,237,.4); border-radius: 10px; padding: .85rem 1rem; margin-bottom: 1rem; font-family: 'Courier New', monospace; font-size: .82rem; color: var(--ai-text); line-height: 1.6; }
.ai-sys-prompt-label { font-size: .7rem; font-weight: 700; color: var(--ai-warning); letter-spacing: .1em; margin-bottom: .35rem; }
/* Chat interface (Level 1) */
.ai-chat-wrap { background: var(--ai-dark-3); border: 1px solid var(--ai-border); border-radius: 12px; overflow: hidden; }
.ai-chat-header { background: linear-gradient(90deg, rgba(124,58,237,.3), rgba(6,182,212,.2)); padding: .75rem 1rem; border-bottom: 1px solid var(--ai-border); display: flex; align-items: center; gap: .5rem; }
.ai-chat-status { width: 8px; height: 8px; border-radius: 50%; background: var(--ai-success); box-shadow: 0 0 6px var(--ai-success); }
.ai-chat-name { font-size: .85rem; font-weight: 600; color: var(--ai-cyan); }
.ai-chat-tag { font-size: .7rem; color: var(--ai-text-dim); margin-left: auto; background: rgba(124,58,237,.2); padding: .15rem .5rem; border-radius: 99px; }
.ai-chat-log { height: 300px; overflow-y: auto; padding: 1rem; display: flex; flex-direction: column; gap: .75rem; }
.ai-msg { max-width: 78%; }
.ai-msg.ai { align-self: flex-start; }
.ai-msg.user { align-self: flex-end; }
.ai-msg-bubble { padding: .6rem 1rem; border-radius: 12px; font-size: .9rem; line-height: 1.5; }
.ai-msg.ai .ai-msg-bubble { background: var(--ai-dark-4); border: 1px solid var(--ai-border); color: var(--ai-text); border-bottom-left-radius: 2px; }
.ai-msg.user .ai-msg-bubble { background: linear-gradient(135deg, var(--ai-purple), #5b21b6); color: #fff; border-bottom-right-radius: 2px; }
.ai-msg-sender { font-size: .7rem; color: var(--ai-text-dim); margin-bottom: .2rem; }
.ai-msg.user .ai-msg-sender { text-align: right; }
.ai-chat-input-row { display: flex; gap: .5rem; padding: .75rem; border-top: 1px solid var(--ai-border); background: var(--ai-dark-4); }
.ai-chat-input { flex: 1; background: var(--ai-dark-3); border: 1px solid var(--ai-border); border-radius: 8px; padding: .5rem .75rem; color: var(--ai-text); font-size: .9rem; font-family: inherit; resize: none; min-height: 44px; }
.ai-chat-input:focus { outline: none; border-color: var(--ai-purple); }
.ai-chat-send { background: var(--ai-purple); color: #fff; border: none; border-radius: 8px; padding: .5rem 1rem; font-weight: 600; font-size: .85rem; cursor: pointer; min-height: 44px; transition: background .2s; white-space: nowrap; }
.ai-chat-send:hover { background: var(--ai-purple-light); }
.ai-chat-send:disabled { opacity: .5; cursor: default; }
/* Injection meter */
.ai-inject-meter { margin-top: 1rem; }
.ai-inject-label { display: flex; justify-content: space-between; font-size: .8rem; color: var(--ai-text-dim); margin-bottom: .3rem; }
.ai-inject-bar-bg { height: 6px; background: var(--ai-dark-4); border-radius: 3px; overflow: hidden; }
.ai-inject-bar { height: 100%; border-radius: 3px; background: linear-gradient(90deg, var(--ai-success), var(--ai-warning), var(--ai-danger)); width: 0; transition: width .5s ease; }
.ai-level-tip { background: rgba(6,182,212,.1); border: 1px solid rgba(6,182,212,.3); border-radius: 10px; padding: .75rem 1rem; margin-top: 1rem; font-size: .85rem; color: var(--ai-cyan-light); }
.ai-level-tip strong { display: block; margin-bottom: .25rem; color: var(--ai-cyan); }
.ai-rate-warn { background: rgba(245,158,11,.12); border: 1px solid rgba(245,158,11,.4); border-radius: 8px; padding: .5rem .85rem; font-size: .82rem; color: var(--ai-warning); margin-top: .5rem; }
/* Level 2: Jailbreak Detection */
.ai-prompt-list { display: flex; flex-direction: column; gap: .75rem; }
.ai-prompt-item { background: var(--ai-dark-3); border: 1px solid var(--ai-border); border-radius: 10px; padding: 1rem 1.25rem; cursor: pointer; transition: border-color .2s, background .2s; position: relative; }
.ai-prompt-item:hover { border-color: var(--ai-purple-light); background: var(--ai-dark-4); }
.ai-prompt-item.selected { border-color: var(--ai-purple); background: rgba(124,58,237,.15); }
.ai-prompt-item.correct { border-color: var(--ai-success); background: rgba(16,185,129,.1); }
.ai-prompt-item.incorrect { border-color: var(--ai-danger); background: rgba(239,68,68,.1); }
.ai-prompt-index { font-size: .72rem; font-weight: 700; color: var(--ai-text-dim); letter-spacing: .05em; margin-bottom: .35rem; }
.ai-prompt-text { font-family: 'Courier New', monospace; font-size: .85rem; color: var(--ai-text); line-height: 1.5; }
.ai-prompt-reveal { margin-top: .75rem; font-size: .82rem; color: var(--ai-text-dim); display: none; border-top: 1px solid var(--ai-border); padding-top: .6rem; }
.ai-prompt-item.revealed .ai-prompt-reveal { display: block; }
.ai-l2-instruction { font-size: .92rem; color: var(--ai-text-dim); margin-bottom: 1rem; }
/* Level 3: Deepfake tells */
.ai-deepfake-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 1rem; }
.ai-tell-card { background: var(--ai-dark-3); border: 1px solid var(--ai-border); border-radius: 12px; padding: 1.25rem; text-align: center; cursor: pointer; transition: all .2s; min-height: 120px; display: flex; flex-direction: column; align-items: center; justify-content: center; }
.ai-tell-card:hover { border-color: var(--ai-cyan); transform: translateY(-2px); }
.ai-tell-card.flipped { border-color: var(--ai-cyan); background: rgba(6,182,212,.1); transform: none; }
.ai-tell-icon { font-size: 2rem; margin-bottom: .5rem; }
.ai-tell-front { display: flex; flex-direction: column; align-items: center; }
.ai-tell-back { display: none; font-size: .82rem; color: var(--ai-text-dim); line-height: 1.5; text-align: left; }
.ai-tell-card.flipped .ai-tell-front { display: none; }
.ai-tell-card.flipped .ai-tell-back { display: block; }
.ai-tell-title { font-size: .9rem; font-weight: 700; color: var(--ai-text); }
.ai-tell-hint { font-size: .72rem; color: var(--ai-text-dim); margin-top: .3rem; }
.ai-tells-progress { font-size: .85rem; color: var(--ai-text-dim); margin-top: 1rem; text-align: center; }
.ai-l3-instruction { font-size: .88rem; color: var(--ai-text-dim); margin-bottom: 1rem; }
/* Level 4: AI Text Detector */
.ai-detector-wrap { display: flex; flex-direction: column; gap: 1rem; }
.ai-sample-buttons { display: flex; flex-wrap: wrap; gap: .5rem; margin-bottom: .25rem; }
.ai-sample-btn { background: var(--ai-dark-4); border: 1px solid var(--ai-border); color: var(--ai-text-dim); font-size: .8rem; padding: .4rem .85rem; border-radius: 8px; cursor: pointer; transition: all .2s; min-height: 36px; font-family: inherit; }
.ai-sample-btn:hover { border-color: var(--ai-purple); color: var(--ai-purple-light); }
.ai-text-area { background: var(--ai-dark-3); border: 1px solid var(--ai-border); border-radius: 10px; padding: .85rem 1rem; color: var(--ai-text); font-size: .9rem; font-family: inherit; resize: vertical; min-height: 120px; width: 100%; line-height: 1.6; }
.ai-text-area:focus { outline: none; border-color: var(--ai-cyan); }
.ai-detect-btn { background: linear-gradient(135deg, var(--ai-purple), var(--ai-cyan)); color: #fff; border: none; border-radius: 10px; padding: .75rem 2rem; font-size: .95rem; font-weight: 700; cursor: pointer; min-height: 48px; align-self: flex-start; transition: opacity .2s; font-family: inherit; }
.ai-detect-btn:hover { opacity: .88; }
.ai-detect-btn:disabled { opacity: .4; cursor: default; }
.ai-detector-result { background: var(--ai-dark-3); border: 1px solid var(--ai-border); border-radius: 12px; padding: 1.5rem; display: none; }
.ai-detector-result.visible { display: block; }
.ai-result-score-row { display: flex; align-items: center; gap: 1rem; margin-bottom: 1rem; }
.ai-score-circle { width: 72px; height: 72px; border-radius: 50%; display: flex; flex-direction: column; align-items: center; justify-content: center; font-weight: 800; font-size: 1.2rem; flex-shrink: 0; }
.ai-score-circle.low { background: rgba(16,185,129,.2); border: 3px solid var(--ai-success); color: var(--ai-success); }
.ai-score-circle.med { background: rgba(245,158,11,.2); border: 3px solid var(--ai-warning); color: var(--ai-warning); }
.ai-score-circle.high { background: rgba(239,68,68,.2); border: 3px solid var(--ai-danger); color: var(--ai-danger); }
.ai-score-label { font-size: .65rem; font-weight: 600; letter-spacing: .05em; }
.ai-result-verdict { font-size: 1rem; font-weight: 700; color: #fff; }
.ai-result-caveat { font-size: .85rem; color: var(--ai-text-dim); margin-top: .25rem; }
.ai-bias-cards { display: grid; grid-template-columns: repeat(auto-fit, minmax(180px, 1fr)); gap: .75rem; margin-top: 1rem; }
.ai-bias-card { background: var(--ai-dark-4); border: 1px solid var(--ai-border); border-radius: 10px; padding: 1rem; }
.ai-bias-card-title { font-size: .8rem; font-weight: 700; color: var(--ai-warning); margin-bottom: .35rem; }
.ai-bias-card-text { font-size: .8rem; color: var(--ai-text-dim); line-height: 1.5; }
.ai-quiz-section { background: var(--ai-dark-3); border: 1px solid var(--ai-border); border-radius: 12px; padding: 1.25rem; margin-top: 1rem; }
.ai-quiz-question { font-size: .95rem; font-weight: 700; color: var(--ai-text); margin-bottom: 1rem; }
.ai-quiz-options { display: flex; flex-direction: column; gap: .5rem; }
.l4-quiz-opt { background: var(--ai-dark-4); border: 1px solid var(--ai-border); border-radius: 8px; padding: .75rem 1rem; cursor: pointer; font-size: .9rem; color: var(--ai-text); transition: all .2s; min-height: 44px; text-align: left; width: 100%; font-family: inherit; }
.l4-quiz-opt:hover:not(:disabled) { border-color: var(--ai-cyan); background: rgba(6,182,212,.1); }
.l4-quiz-opt.chosen { border-color: var(--ai-purple); background: rgba(124,58,237,.15); color: #fff; }
.l4-quiz-opt:disabled { cursor: default; }
/* Level 5: Ethics */
.ai-scenario-stack { display: flex; flex-direction: column; gap: 1.5rem; }
.ai-scenario { background: var(--ai-dark-3); border: 1px solid var(--ai-border); border-radius: 12px; padding: 1.5rem; }
.ai-scenario-num { font-size: .7rem; font-weight: 700; color: var(--ai-purple-light); letter-spacing: .1em; margin-bottom: .5rem; text-transform: uppercase; }
.ai-scenario-text { font-size: .95rem; color: var(--ai-text); line-height: 1.6; margin-bottom: 1rem; }
.ai-ethics-options { display: flex; flex-direction: column; gap: .5rem; margin-bottom: 1rem; }
.ai-ethics-opt { background: var(--ai-dark-4); border: 1px solid var(--ai-border); border-radius: 8px; padding: .75rem 1rem; cursor: pointer; font-size: .9rem; color: var(--ai-text); transition: all .2s; min-height: 44px; text-align: left; width: 100%; font-family: inherit; }
.ai-ethics-opt:hover:not(:disabled) { border-color: var(--ai-cyan); background: rgba(6,182,212,.1); }
.ai-ethics-opt.chosen { border-color: var(--ai-purple); background: rgba(124,58,237,.15); color: #fff; }
.ai-ethics-opt:disabled { cursor: default; }
.ai-reflection-label { font-size: .82rem; color: var(--ai-text-dim); margin-bottom: .4rem; font-weight: 600; }
.ai-reflection { width: 100%; background: var(--ai-dark-4); border: 1px solid var(--ai-border); border-radius: 8px; color: var(--ai-text); font-family: inherit; font-size: .9rem; padding: .75rem 1rem; resize: vertical; min-height: 80px; }
.ai-reflection:focus { outline: none; border-color: var(--ai-cyan); }
.ai-reflection-hint { font-size: .78rem; color: var(--ai-text-dim); margin-top: .35rem; }
.ai-scenario-done-badge { display: none; align-items: center; gap: .35rem; background: rgba(16,185,129,.15); border: 1px solid rgba(16,185,129,.4); color: #34d399; font-size: .78rem; font-weight: 700; padding: .3rem .7rem; border-radius: 99px; margin-top: .75rem; }
/* Buttons */
.ai-btn { display: inline-flex; align-items: center; justify-content: center; gap: .4rem; border: none; border-radius: 10px; font-size: .95rem; font-weight: 700; cursor: pointer; min-height: 48px; padding: .75rem 1.75rem; transition: all .2s; text-decoration: none; font-family: inherit; }
.ai-btn-primary { background: linear-gradient(135deg, var(--ai-purple), var(--ai-cyan)); color: #fff; }
.ai-btn-primary:hover { opacity: .88; transform: translateY(-1px); }
.ai-btn-primary:disabled { opacity: .4; cursor: default; transform: none; }
.ai-btn-secondary { background: var(--ai-dark-3); border: 1px solid var(--ai-border); color: var(--ai-text); }
.ai-btn-secondary:hover { border-color: var(--ai-purple); background: rgba(124,58,237,.1); }
.ai-btn-row { display: flex; gap: .75rem; margin-top: 1.5rem; flex-wrap: wrap; }
/* Feedback banner */
.ai-feedback { border-radius: 10px; padding: .85rem 1.1rem; font-size: .9rem; margin-top: 1rem; display: none; }
.ai-feedback.success { background: rgba(16,185,129,.12); border: 1px solid rgba(16,185,129,.4); color: #34d399; display: block; }
.ai-feedback.error { background: rgba(239,68,68,.12); border: 1px solid rgba(239,68,68,.4); color: #f87171; display: block; }
.ai-feedback.info { background: rgba(6,182,212,.12); border: 1px solid rgba(6,182,212,.4); color: var(--ai-cyan-light); display: block; }
/* Completion */
.ai-complete-panel { background: linear-gradient(135deg, rgba(124,58,237,.25), rgba(6,182,212,.15)); border: 2px solid var(--ai-purple); border-radius: 20px; padding: 3rem 2rem; text-align: center; display: none; }
.ai-complete-panel.visible { display: block; }
.ai-complete-emoji { font-size: 4rem; margin-bottom: 1rem; }
.ai-complete-title { font-size: 1.8rem; font-weight: 800; color: #fff; margin-bottom: .5rem; }
.ai-complete-sub { color: var(--ai-text-dim); font-size: 1rem; margin-bottom: 1.5rem; }
.ai-xp-badge { display: inline-flex; align-items: center; gap: .5rem; background: rgba(124,58,237,.3); border: 1px solid var(--ai-purple); color: var(--ai-purple-light); font-size: 1rem; font-weight: 700; padding: .5rem 1.5rem; border-radius: 99px; margin-bottom: 1.5rem; }
.ai-earned-badge { display: inline-flex; align-items: center; gap: .5rem; background: rgba(6,182,212,.15); border: 1px solid rgba(6,182,212,.4); color: var(--ai-cyan-light); font-size: .9rem; font-weight: 600; padding: .45rem 1.25rem; border-radius: 99px; margin-bottom: 2rem; }
/* Mobile */
@media (max-width: 600px) {
  .ai-nav-links { display: none; }
  .ai-hero { padding: 1.5rem 1rem 1rem; }
  .ai-lab-body { padding: 1rem; }
  .ai-level-card { padding: 1.25rem; }
  .ai-chat-log { height: 220px; }
  .ai-deepfake-grid { grid-template-columns: 1fr 1fr; }
  .ai-bias-cards { grid-template-columns: 1fr; }
  .ai-btn-row { flex-direction: column; }
  .ai-detect-btn { align-self: stretch; }
}
@media (max-width: 380px) {
  .ai-deepfake-grid { grid-template-columns: 1fr; }
  .ai-hero-meta { gap: .75rem; }
}