/* components.css — Reusable components: cards, buttons, badges, progress bars, hero, roadmap, eye diagram, concept cards, demos, charts, accordion, toast, headings, stat highlights, animations, scrollbar, selection and data tables.
   Extracted from the original single-file index.html (2026-08-29 split).
*/

/* ═══════════════════════════════════════════════ CARDS */
.card{background:var(--card);border:1px solid var(--border2);border-radius:var(--r2);padding:1.4rem;margin-bottom:1rem;transition:box-shadow var(--transition)}
.card:hover{box-shadow:var(--shadow2)}
.card-grid{display:grid;gap:1rem;margin-bottom:1rem}
.card-grid.cols-2{grid-template-columns:repeat(2,1fr)}
.card-grid.cols-3{grid-template-columns:repeat(3,1fr)}
.card-icon{font-size:1.8rem;margin-bottom:.7rem}
.card-title{font-size:1rem;font-weight:700;margin-bottom:.4rem}
.card-body{font-size:.88rem;color:var(--text2)}

/* Info boxes */
.info-box{border-radius:var(--r);padding:1rem 1.2rem;margin-bottom:1rem;display:flex;gap:.8rem;align-items:flex-start;font-size:.9rem}
.info-box.blue{background:rgba(99,102,241,.1);border-left:3px solid var(--accent)}
.info-box.green{background:rgba(16,185,129,.1);border-left:3px solid var(--green)}
.info-box.amber{background:rgba(245,158,11,.1);border-left:3px solid var(--amber)}
.info-box.rose{background:rgba(244,63,94,.1);border-left:3px solid var(--rose)}
.info-box .icon{font-size:1.1rem;flex-shrink:0;margin-top:.05rem}

/* ═══════════════════════════════════════════════ BUTTONS */
.btn{display:inline-flex;align-items:center;gap:.5rem;padding:.5rem 1.2rem;border-radius:var(--r);font-size:.875rem;font-weight:600;transition:all var(--transition);border:1px solid transparent}
.btn-primary{background:var(--accent);color:#fff;border-color:var(--accent)}
.btn-primary:hover{background:var(--accent2);transform:translateY(-1px)}
.btn-outline{background:transparent;color:var(--text);border-color:var(--border2)}
.btn-outline:hover{background:var(--bg3);border-color:var(--text3)}
.btn-sm{padding:.35rem .85rem;font-size:.78rem}
.btn-green{background:var(--green);color:#fff;border-color:var(--green)}
.btn-green:hover{filter:brightness(1.1)}

/* ═══════════════════════════════════════════════ BADGES */
.badge{display:inline-flex;align-items:center;gap:.3rem;padding:.2rem .65rem;border-radius:999px;font-size:.72rem;font-weight:700}
.badge-accent{background:rgba(99,102,241,.15);color:var(--accent2)}
.badge-green{background:rgba(16,185,129,.15);color:var(--green)}
.badge-amber{background:rgba(245,158,11,.15);color:var(--amber)}
.badge-rose{background:rgba(244,63,94,.15);color:var(--rose)}
.badge-cyan{background:rgba(6,182,212,.15);color:var(--cyan)}

/* ═══════════════════════════════════════════════ PROGRESS BARS */
.progress-wrap{margin-bottom:.5rem}
.progress-label{display:flex;justify-content:space-between;font-size:.78rem;color:var(--text2);margin-bottom:.35rem;font-weight:500}
.progress-bar{height:8px;background:var(--bg3);border-radius:999px;overflow:hidden}
.progress-fill{height:100%;border-radius:999px;background:linear-gradient(90deg,var(--accent),var(--cyan));transition:width .5s ease}

/* ═══════════════════════════════════════════════ HERO */
.hero{text-align:center;padding:3.5rem 1rem 3rem;margin-bottom:2rem}
.hero-badge{display:inline-flex;align-items:center;gap:.5rem;background:rgba(99,102,241,.12);border:1px solid rgba(99,102,241,.3);color:var(--accent3);padding:.4rem 1rem;border-radius:999px;font-size:.78rem;font-weight:700;margin-bottom:1.2rem;letter-spacing:.04em}
.hero-title{font-size:clamp(2rem,5vw,3.2rem);font-weight:900;line-height:1.15;background:linear-gradient(135deg,var(--text),var(--accent3),var(--cyan));-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text;margin-bottom:.8rem}
.hero-subtitle{font-size:1.1rem;color:var(--text2);max-width:520px;margin:0 auto 1.8rem}
.hero-stats{display:flex;justify-content:center;gap:2.5rem;margin-bottom:2rem;flex-wrap:wrap}
.hero-stat{text-align:center}
.hero-stat-num{font-size:1.6rem;font-weight:800;color:var(--accent2)}
.hero-stat-label{font-size:.75rem;color:var(--text3);font-weight:500}
.hero-cta{display:flex;gap:1rem;justify-content:center;flex-wrap:wrap}

/* ═══════════════════════════════════════════════ ROADMAP */
.roadmap{display:flex;gap:0;overflow-x:auto;padding:.5rem 0;margin-bottom:1.5rem}
.roadmap-step{display:flex;flex-direction:column;align-items:center;flex:1;min-width:100px;position:relative}
.roadmap-step:not(:last-child)::after{content:'';position:absolute;top:20px;left:50%;width:100%;height:2px;background:var(--border2);z-index:0}
.roadmap-dot{width:40px;height:40px;border-radius:50%;background:var(--bg3);border:2px solid var(--border2);display:flex;align-items:center;justify-content:center;font-size:1rem;position:relative;z-index:1;transition:all var(--transition)}
.roadmap-step.done .roadmap-dot{background:var(--green);border-color:var(--green);color:#fff}
.roadmap-step.active .roadmap-dot{background:var(--accent);border-color:var(--accent);color:#fff;box-shadow:0 0 0 4px rgba(99,102,241,.2)}
.roadmap-label{font-size:.65rem;color:var(--text3);margin-top:.4rem;text-align:center;max-width:80px;line-height:1.3}

/* ═══════════════════════════════════════════════ SVG EYE DIAGRAM */
.eye-diagram-wrap{background:var(--card);border:1px solid var(--border2);border-radius:var(--r2);padding:1.4rem;margin-bottom:1rem}
.eye-diagram-wrap svg{width:100%;max-height:180px}
.diagram-legend{display:flex;gap:1.2rem;flex-wrap:wrap;margin-top:.8rem}
.legend-item{display:flex;align-items:center;gap:.4rem;font-size:.78rem;color:var(--text2)}
.legend-dot{width:10px;height:10px;border-radius:50%;flex-shrink:0}

/* ═══════════════════════════════════════════════ CONCEPT CARDS */
.concept-card{background:var(--card);border:1px solid var(--border2);border-radius:var(--r2);padding:1.2rem;border-top:3px solid var(--accent)}
.concept-card.saccade{border-top-color:var(--green)}
.concept-card.regression{border-top-color:var(--rose)}
.concept-card.fixation{border-top-color:var(--cyan)}

/* ═══════════════════════════════════════════════ SUBVOCAL DEMO */
.subvocal-demo{background:var(--card);border:1px solid var(--border2);border-radius:var(--r2);padding:1.5rem;text-align:center;margin-bottom:1rem}
.subvocal-text{font-size:1.4rem;font-weight:700;letter-spacing:.06em;color:var(--text2)}
.subvocal-text span.word-highlight{color:var(--accent2);text-decoration:underline;animation:subvocal-pulse 0.6s ease-in-out infinite alternate}
@keyframes subvocal-pulse{from{color:var(--accent2)}to{color:var(--cyan)}}
.subvocal-audio{font-size:.75rem;color:var(--text3);margin-top:.6rem}
.sound-wave{display:flex;align-items:center;justify-content:center;gap:3px;height:28px;margin:.5rem auto;width:80px}
.sound-bar{width:4px;background:var(--accent);border-radius:2px;animation:wave 0.6s ease-in-out infinite alternate}
.sound-bar:nth-child(1){height:8px;animation-delay:.0s}
.sound-bar:nth-child(2){height:16px;animation-delay:.1s}
.sound-bar:nth-child(3){height:24px;animation-delay:.2s}
.sound-bar:nth-child(4){height:16px;animation-delay:.3s}
.sound-bar:nth-child(5){height:8px;animation-delay:.4s}
@keyframes wave{to{transform:scaleY(0.3)}}

/* ═══════════════════════════════════════════════ SPEED VS COMPREHENSION CHART */
.chart-wrap{background:var(--card);border:1px solid var(--border2);border-radius:var(--r2);padding:1.4rem;margin-bottom:1rem}
.chart-title{font-size:.9rem;font-weight:600;margin-bottom:1rem;color:var(--text2)}
.bar-chart{display:flex;align-items:flex-end;gap:.5rem;height:120px}
.bar-group{flex:1;display:flex;flex-direction:column;align-items:center;gap:.4rem}
.bar-pair{display:flex;gap:3px;align-items:flex-end;height:100px}
.bar{width:18px;border-radius:4px 4px 0 0;transition:height .6s ease}
.bar.speed-bar{background:linear-gradient(180deg,var(--cyan),rgba(6,182,212,.4))}
.bar.comp-bar{background:linear-gradient(180deg,var(--accent),rgba(99,102,241,.4))}
.bar-label{font-size:.62rem;color:var(--text3);text-align:center;line-height:1.2}

/* ═══════════════════════════════════════════════ ACCORDION */
.accordion{border:1px solid var(--border2);border-radius:var(--r2);overflow:hidden;margin-bottom:.75rem}
.accordion-header{background:var(--card);padding:1rem 1.2rem;cursor:pointer;display:flex;justify-content:space-between;align-items:center;transition:background var(--transition);user-select:none}
.accordion-header:hover{background:var(--card2)}
.accordion-arrow{transition:transform var(--transition);color:var(--text3);font-size:.8rem}
.accordion.open .accordion-arrow{transform:rotate(180deg)}
.accordion-body{display:none;padding:1rem 1.2rem;background:var(--bg2);border-top:1px solid var(--border2);font-size:.88rem;color:var(--text2)}
.accordion.open .accordion-body{display:block}

/* ═══════════════════════════════════════════════ TOAST */
#xp-toast{position:fixed;bottom:1.5rem;right:1.5rem;z-index:9999;background:linear-gradient(135deg,var(--accent),var(--cyan));color:#fff;padding:.75rem 1.3rem;border-radius:var(--r);font-weight:700;font-size:.9rem;box-shadow:var(--shadow);transform:translateY(80px);opacity:0;transition:all .35s cubic-bezier(.4,0,.2,1);pointer-events:none;display:flex;align-items:center;gap:.5rem}
#xp-toast.show{transform:translateY(0);opacity:1}

/* ═══════════════════════════════════════════════ SECTION HEADINGS */
.section-heading{font-size:1.1rem;font-weight:700;color:var(--text);margin:1.8rem 0 .8rem;display:flex;align-items:center;gap:.6rem}
.section-heading::after{content:'';flex:1;height:1px;background:var(--border2)}

/* ═══════════════════════════════════════════════ STAT HIGHLIGHT */
.stat-row{display:flex;gap:1rem;flex-wrap:wrap;margin-bottom:1.2rem}
.stat-box{background:var(--card);border:1px solid var(--border2);border-radius:var(--r);padding:.9rem 1.2rem;flex:1;min-width:120px;text-align:center}
.stat-box-num{font-size:1.5rem;font-weight:800;color:var(--accent2)}
.stat-box-label{font-size:.72rem;color:var(--text3);font-weight:500;margin-top:.1rem}

/* ═══════════════════════════════════════════════ OVERLAY SIDEBAR MOBILE */
.sidebar-overlay{display:none;position:fixed;inset:0;background:rgba(0,0,0,.5);z-index:190}

/* ═══════════════════════════════════════════════ ANIMATIONS */
@keyframes fadeInUp{from{opacity:0;transform:translateY(16px)}to{opacity:1;transform:translateY(0)}}
@keyframes pulse{0%,100%{opacity:1}50%{opacity:.6}}
@keyframes spin{to{transform:rotate(360deg)}}
.fade-in{animation:fadeInUp .4s ease forwards}

/* ═══════════════════════════════════════════════ SCROLLBAR */
::-webkit-scrollbar{width:6px;height:6px}
::-webkit-scrollbar-track{background:transparent}
::-webkit-scrollbar-thumb{background:var(--bg3);border-radius:3px}

/* ═══════════════════════════════════════════════ SELECTION */
::selection{background:rgba(99,102,241,.3);color:var(--text)}

/* ═══════════════════════════════════════════════ TABLE */
.data-table{width:100%;border-collapse:collapse;font-size:.86rem;margin-bottom:1rem}
.data-table th{background:var(--bg3);color:var(--text2);font-weight:600;padding:.6rem .8rem;text-align:left;font-size:.78rem;text-transform:uppercase;letter-spacing:.05em}
.data-table td{padding:.6rem .8rem;border-bottom:1px solid var(--border2);color:var(--text2)}
.data-table tr:hover td{background:var(--border2)}
.data-table td:first-child{color:var(--text);font-weight:600}