:root{--font-burmese:"Padauk", "Noto Sans Myanmar", sans-serif;--font-thai:"Sarabun", -apple-system, BlinkMacSystemFont, sans-serif;--font-sans:"Sarabun", "Outfit", -apple-system, BlinkMacSystemFont, sans-serif;--bg-primary:#f8fafc;--bg-surface:#fff;--bg-surface-elevated:#f1f5f9;--bg-glass:#ffffffd9;--border-color:#e2e8f0;--border-subtle:#edf2f7;--text-main:#0f172a;--text-muted:#64748b;--text-subtle:#94a3b8;--brand-gold:#f59e0b;--brand-gold-hover:#d97706;--brand-gold-glow:#f59e0b40;--brand-indigo:#6366f1;--brand-emerald:#10b981;--brand-rose:#f43f5e;--shadow-sm:0 1px 2px 0 #0000000d;--shadow-md:0 4px 6px -1px #00000014, 0 2px 4px -1px #0000000a;--shadow-lg:0 10px 15px -3px #00000014, 0 4px 6px -2px #0000000a;--shadow-glow:0 0 20px var(--brand-gold-glow);--sat:env(safe-area-inset-top,0px);--sab:env(safe-area-inset-bottom,0px);--bottom-nav-height:3.85rem}[data-theme=dark]{--bg-primary:#0b0f19;--bg-surface:#111827;--bg-surface-elevated:#1e293b;--bg-glass:#111827d9;--border-color:#334155;--border-subtle:#1e293b;--text-main:#f8fafc;--text-muted:#94a3b8;--text-subtle:#64748b;--brand-gold-glow:#f59e0b59;--shadow-sm:0 1px 3px 0 #0000004d;--shadow-md:0 4px 8px -1px #0006;--shadow-lg:0 12px 20px -4px #00000080}*,:before,:after{box-sizing:border-box;margin:0;padding:0}html,body{font-family:var(--font-sans);background-color:var(--bg-primary);color:var(--text-main);-webkit-font-smoothing:antialiased;-webkit-tap-highlight-color:transparent;max-width:100vw;min-height:100vh;line-height:1.5;transition:background-color .25s,color .25s;overflow-x:hidden}#root{flex-direction:column;max-width:100vw;min-height:100vh;display:flex;overflow-x:hidden}.burmese-font{font-family:var(--font-burmese);line-height:1.6}.thai-font{font-family:var(--font-thai)}.glass-panel{background:var(--bg-glass);-webkit-backdrop-filter:blur(12px);border:1px solid var(--border-color);border-radius:1rem}.app-container{max-width:1280px;margin:0 auto;padding:0 1rem 4rem}::-webkit-scrollbar{width:8px;height:8px}::-webkit-scrollbar-track{background:var(--bg-primary)}::-webkit-scrollbar-thumb{background:var(--border-color);border-radius:4px}::-webkit-scrollbar-thumb:hover{background:var(--text-muted)}.perspective-1000{perspective:1000px}.transform-style-3d{transform-style:preserve-3d}.backface-hidden{backface-visibility:hidden}.rotate-y-180{transform:rotateY(180deg)}.btn-gold{color:#fff;cursor:pointer;background:linear-gradient(135deg,#f59e0b,#d97706);border:none;border-radius:.75rem;justify-content:center;align-items:center;gap:.5rem;padding:.625rem 1.25rem;font-weight:600;transition:all .2s cubic-bezier(.4,0,.2,1);display:inline-flex;box-shadow:0 4px 12px #f59e0b40}.btn-gold:hover{transform:translateY(-1px);box-shadow:0 6px 16px #f59e0b59}.btn-gold:active{transform:translateY(0)}.btn-secondary{background:var(--bg-surface-elevated);color:var(--text-main);border:1px solid var(--border-color);cursor:pointer;border-radius:.75rem;justify-content:center;align-items:center;gap:.5rem;padding:.625rem 1.25rem;font-weight:500;transition:all .2s;display:inline-flex}.btn-secondary:hover{background:var(--border-color);color:var(--text-main)}.card-hover{border:1px solid var(--border-color);transition:all .25s cubic-bezier(.4,0,.2,1)}.card-hover:hover{border-color:var(--brand-gold);box-shadow:0 8px 24px -4px #0000001f, 0 0 12px var(--brand-gold-glow);transform:translateY(-3px)}@keyframes goldPulse{0%,to{box-shadow:0 0 #f59e0b66}50%{box-shadow:0 0 0 8px #f59e0b00}}.gold-pulse{animation:2s infinite goldPulse}.modal-overlay{-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px);z-index:50;background-color:#000000a6;justify-content:center;align-items:center;padding:1rem;display:flex;position:fixed;inset:0}.matrix-tile{background:var(--bg-surface);border:1.5px solid var(--border-color);cursor:pointer;-webkit-user-select:none;user-select:none;border-radius:.85rem;flex-direction:column;justify-content:center;align-items:center;padding:.75rem .5rem;transition:all .2s cubic-bezier(.4,0,.2,1);display:flex;position:relative;overflow:hidden}.matrix-tile:before{content:"";background:0 0;height:3px;transition:background .2s;position:absolute;top:0;left:0;right:0}.matrix-tile:hover{border-color:var(--brand-gold);background:var(--bg-surface-elevated);box-shadow:0 10px 20px -5px #f59e0b26, 0 0 12px var(--brand-gold-glow);z-index:2;transform:translateY(-3px)scale(1.02)}.matrix-tile:hover:before{background:var(--brand-gold)}.matrix-tile.is-playing{border-color:var(--brand-gold);z-index:3;background:#f59e0b14;transform:scale(1.03);box-shadow:0 0 0 3px #f59e0b59,0 0 20px #f59e0b4d}.matrix-tile.is-playing:before{background:var(--brand-gold)}@keyframes soundBars{0%,to{height:4px}50%{height:12px}}.sound-bar{background:var(--brand-gold);border-radius:2px;width:2.5px;animation:.6s ease-in-out infinite soundBars;display:inline-block}.sound-bar:nth-child(2){animation-delay:.2s}.sound-bar:nth-child(3){animation-delay:.4s}.speed-match-card{box-sizing:border-box;border:1.5px solid var(--border-color);background:var(--bg-surface-elevated);cursor:pointer;-webkit-user-select:none;user-select:none;height:72px;min-height:72px;max-height:72px;box-shadow:var(--shadow-sm);border-radius:.875rem;justify-content:space-between;align-items:center;padding:0 1rem;transition:all .2s cubic-bezier(.4,0,.2,1);display:flex;position:relative;overflow:hidden}.speed-match-card:hover:not(.is-matched){border-color:var(--card-hover-border,var(--brand-gold));background:var(--bg-surface);transform:translateY(-2px);box-shadow:0 8px 18px -3px #00000017}.speed-match-card.is-selected-char{transform:scale(1.015);border-color:var(--brand-gold)!important;background:#f59e0b1f!important;box-shadow:0 0 0 3px #f59e0b40,0 8px 20px -4px #f59e0b4d!important}.speed-match-card.is-selected-pron{transform:scale(1.015);border-color:var(--brand-indigo)!important;background:#6366f11f!important;box-shadow:0 0 0 3px #6366f140,0 8px 20px -4px #6366f14d!important}.speed-match-card.is-matched{opacity:.7;cursor:default;background:#10b98114!important;border-color:#10b98199!important}.three-tones-list{flex-direction:column;gap:1.25rem;display:flex}.tone-row-card{grid-template-columns:240px 1fr 200px;align-items:center;gap:1.5rem;display:grid}@media (width<=920px){.tone-row-card{grid-template-columns:1fr;gap:1.15rem}}@keyframes slideUp{0%{opacity:0;transform:translate(-50%,20px)}to{opacity:1;transform:translate(-50%)}}@keyframes fadeIn{0%{opacity:0}to{opacity:1}}.mobile-bottom-nav{z-index:95;background:var(--bg-glass);-webkit-backdrop-filter:blur(16px);border-top:1px solid var(--border-color);padding-bottom:var(--sab);transition:transform .25s,background .25s;display:none;position:fixed;bottom:0;left:0;right:0;box-shadow:0 -4px 20px #00000014}[data-theme=dark] .mobile-bottom-nav{box-shadow:0 -4px 25px #00000073}.mobile-bottom-nav-inner{height:var(--bottom-nav-height);justify-content:space-around;align-items:center;max-width:640px;margin:0 auto;padding:0 .35rem;display:flex}.bottom-nav-item{color:var(--text-muted);cursor:pointer;-webkit-tap-highlight-color:transparent;-webkit-user-select:none;user-select:none;background:0 0;border:none;border-radius:.75rem;flex-direction:column;flex:1;justify-content:center;align-items:center;gap:2px;min-width:0;padding:.35rem .15rem;transition:all .2s cubic-bezier(.4,0,.2,1);display:flex}.bottom-nav-item:active{transform:scale(.92)}.bottom-nav-icon-wrap{border-radius:9999px;justify-content:center;align-items:center;width:34px;height:28px;transition:all .2s;display:flex;position:relative}.bottom-nav-item.is-active .bottom-nav-icon-wrap{color:var(--brand-gold-hover);box-shadow:0 0 10px var(--brand-gold-glow);background:#f59e0b26}.bottom-nav-icon{transition:transform .2s,color .2s}.bottom-nav-item.is-active .bottom-nav-icon{color:var(--brand-gold);transform:scale(1.12)}.bottom-nav-label{white-space:nowrap;letter-spacing:-.01em;font-size:.68rem;font-weight:500;line-height:1;transition:color .2s}.bottom-nav-item.is-active .bottom-nav-label{color:var(--brand-gold-hover);font-weight:700}.bottom-nav-badge{background:var(--bg-surface-elevated);border:1px solid var(--border-color);min-width:14px;height:14px;color:var(--text-subtle);text-align:center;border-radius:9999px;padding:0 .3rem;font-size:.55rem;font-weight:700;line-height:14px;position:absolute;top:-2px;right:-6px}.table-scroll-container{-webkit-overflow-scrolling:touch;border:1px solid var(--border-color);border-radius:.85rem;width:100%;margin:1rem 0;overflow-x:auto}.lessons-layout{box-sizing:border-box;grid-template-columns:minmax(280px,340px) 1fr;align-items:start;gap:1.5rem;width:100%;min-width:0;max-width:100%;display:grid}.lessons-sidebar-desktop{display:block}.lessons-mobile-nav-bar{display:none}.lesson-reader-panel{background:var(--bg-surface);box-sizing:border-box;border-radius:1.25rem;width:100%;min-width:0;max-width:100%;min-height:600px;padding:2.25rem;overflow-x:hidden}.lesson-reader-panel article{box-sizing:border-box;width:100%;min-width:0;max-width:100%;overflow-x:hidden}.lesson-section-box{box-sizing:border-box;word-break:break-word;width:100%;min-width:0;max-width:100%;padding:1.75rem;overflow-x:hidden}@media (width<=768px){.mobile-bottom-nav{display:block!important}.nav-tabs-desktop,.nav-subtitle{display:none!important}.nav-top-bar{height:3.5rem!important}.nav-logo-img{width:2.35rem!important;height:2.35rem!important}.nav-theme-toggle{width:2.35rem!important;height:2.35rem!important;padding:0!important}.app-container{padding-left:.85rem!important;padding-right:.85rem!important;padding-bottom:calc(var(--bottom-nav-height) + var(--sab) + 1.25rem)!important;box-sizing:border-box!important;width:100%!important;min-width:0!important;max-width:100%!important}.app-footer{padding-bottom:calc(var(--bottom-nav-height) + var(--sab) + 1.5rem)!important;margin-top:2rem!important}.scroll-to-top-btn{bottom:calc(var(--bottom-nav-height) + var(--sab) + .85rem)!important;right:1rem!important}.pwa-install-banner{bottom:calc(var(--bottom-nav-height) + var(--sab) + .65rem)!important;width:calc(100% - 1.5rem)!important;padding:.85rem 1rem!important}.lessons-layout{box-sizing:border-box!important;flex-direction:column!important;gap:1rem!important;width:100%!important;min-width:0!important;max-width:100%!important;display:flex!important}.lessons-sidebar-desktop{display:none!important}.lessons-mobile-nav-bar{box-sizing:border-box!important;width:100%!important;min-width:0!important;max-width:100%!important;display:flex!important}.lesson-reader-panel{box-sizing:border-box!important;border-radius:1rem!important;width:100%!important;min-width:0!important;max-width:100%!important;padding:.85rem!important;overflow-x:hidden!important}.lesson-hero-card{box-sizing:border-box!important;width:100%!important;min-width:0!important;max-width:100%!important;margin-bottom:1rem!important;padding:1rem 1.15rem!important}.lesson-hero-title{font-size:1.35rem!important}.lesson-main-title{word-break:break-word!important;font-size:1.45rem!important}.lesson-section-box{box-sizing:border-box!important;width:100%!important;min-width:0!important;max-width:100%!important;padding:1rem!important;overflow-x:hidden!important}}@media (width<=520px){.nav-version-badge,.nav-btn-text{display:none!important}.app-container{padding-left:.65rem!important;padding-right:.65rem!important}.modal-overlay{align-items:flex-end!important;padding:.5rem!important}.modal-overlay>div{border-bottom-right-radius:.5rem!important;border-bottom-left-radius:.5rem!important;max-height:88vh!important;padding:1.25rem!important}.speed-match-card{height:64px!important;min-height:64px!important;padding:0 .65rem!important}.lesson-reader-panel{box-sizing:border-box!important;min-width:0!important;max-width:100%!important;padding:.85rem!important;overflow-x:hidden!important}.lesson-section-box{box-sizing:border-box!important;word-break:break-word!important;min-width:0!important;max-width:100%!important;padding:1rem!important;overflow-x:hidden!important}.lesson-main-title{word-break:break-word!important;font-size:1.25rem!important}}@media (width<=380px){.bottom-nav-label{font-size:.62rem!important}.bottom-nav-icon-wrap{width:28px!important;height:24px!important}.bottom-nav-badge{display:none!important}.lesson-reader-panel{padding:.65rem!important}.lesson-section-box{padding:.75rem!important}}