:root{--color-bg-start: #0f2027;--color-bg-mid: #203a43;--color-bg-end: #2c5364;--color-glass-white: rgba(255, 255, 255, .08);--color-glass-border: rgba(255, 255, 255, .12);--color-glass-shadow: rgba(0, 0, 0, .3);--color-primary: #4ca1af;--color-accent: #ff9d00;--color-success: #27ae60;--color-danger: #e74c3c;--color-text: #ffffff;--color-muted: rgba(255, 255, 255, .6);--color-border: rgba(255, 255, 255, .1);--color-dropdown-bg: rgba(30, 45, 54, .95);--color-dropdown-shadow: rgba(0, 0, 0, .4);--color-dropdown-option-hover: rgba(255, 255, 255, .1);--color-dropdown-option-active: rgba(255, 255, 255, .2);--color-dropdown-scrollbar-track: rgba(255, 255, 255, .1);--color-dropdown-scrollbar-thumb: rgba(255, 255, 255, .3);--color-dropdown-scrollbar-thumb-hover: rgba(255, 255, 255, .5);--color-secondary: #3498db}html[data-theme=light]{--color-bg-start: #e0eafc;--color-bg-mid: #cfdef3;--color-bg-end: #f5f7fa;--color-glass-white: rgba(255, 255, 255, .4);--color-glass-border: rgba(255, 255, 255, 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rgba(255,200,0,.5)}.phase-retention{background:linear-gradient(135deg,var(--color-danger),#c0392b);cursor:pointer;box-shadow:0 0 30px #e74c3c66}.phase-recovery{background:linear-gradient(135deg,var(--color-success),#2ecc71);box-shadow:0 0 30px #27ae6066}.breath-counter{font-size:3rem;font-weight:700;color:#fff;text-shadow:0 .125rem .25rem rgba(0,0,0,.3)}.speed-selector{display:grid;grid-template-columns:repeat(2,1fr);gap:1rem;width:100%}.speed-btn{padding:.7rem;border:1px solid var(--color-glass-border);color:var(--color-text);border-radius:1rem;background:var(--color-glass-white);cursor:pointer;font-weight:600;transition:all .3s cubic-bezier(.4,0,.2,1)}.speed-btn.active{background:var(--color-primary);color:#fff;border-color:var(--color-primary);box-shadow:0 0 15px #4ca1af80}.speed-btn:hover:not(.active){background:#ffffff26}.slider-group{padding:0 1rem}.slider-group label{display:flex;justify-content:space-between;font-weight:600;margin-bottom:.5rem}.slider{-webkit-appearance:none;-moz-appearance:none;appearance:none;width:100%;height:.5rem;border-radius:1rem;background:#0003;border:1px solid rgba(255,255,255,.05);box-shadow:inset 0 2px 4px #0000004d;outline:none;display:block;margin:.8rem 0}.slider::-webkit-slider-thumb{-webkit-appearance:none;-moz-appearance:none;appearance:none;width:1.8rem;height:1.8rem;border-radius:50%;background:linear-gradient(135deg,var(--color-primary),#3b8d99);cursor:pointer;box-shadow:0 4px 12px #00000080,inset 0 0 8px #fff3;border:2px solid #fff;margin-top:-.65rem;transition:transform .2s ease}.slider::-webkit-slider-thumb:hover{transform:scale(1.1)}.slider::-moz-range-thumb{width:1.8rem;height:1.8rem;border-radius:50%;background:var(--color-primary);cursor:pointer;border:2px solid #fff;box-shadow:0 4px 12px #00000080}.estimated-time{padding:.5rem 1rem;font-weight:600;color:var(--color-muted)}.config-buttons{display:flex;gap:1rem;justify-content:space-between;width:100%}.reset-config-btn{background:#ffffff1a;color:var(--color-text);border:1px solid var(--color-glass-border);padding:1rem .5rem;flex:1;max-width:8rem;border-radius:1.5rem;font-size:.95rem;font-weight:600;cursor:pointer;transition:all .3s}.reset-config-btn:hover{background:#fff3;transform:translateY(-2px)}.start-button{background:linear-gradient(135deg,var(--color-primary),#3b8d99);color:#fff;border:none;padding:1rem;flex:1;border-radius:1.5rem;font-size:1.05rem;font-weight:600;cursor:pointer;transition:all .3s;box-shadow:0 4px 15px #4ca1af4d}.start-button:hover{transform:translateY(-2px);box-shadow:0 6px 20px #4ca1af66}#resultsScreen .start-button{flex:none;align-self:center;width:auto;padding:1rem 3.5rem}.round-info{font-size:1.1rem;color:var(--color-muted)}.instruction{font-size:1.3rem;font-weight:600}.retention-timer{font-size:5rem;font-weight:800;color:var(--color-text);text-shadow:0 0 20px rgba(76,161,175,.3);font-variant-numeric:tabular-nums;margin:1rem 0}.tap-instruction{color:var(--color-muted)}#resultsContent{max-height:300px;overflow-y:auto;padding-right:10px}.result-item{display:flex;justify-content:space-between;padding:1.2rem;margin:.75rem 0;background:var(--color-glass-white);border:1px solid var(--color-glass-border);border-radius:1rem;transition:transform .2s ease}.result-item:hover{transform:scale(1.02)}.result-item.highlight{background:#27ae6026;border:1px solid rgba(39,174,96,.4)}.results-title{font-size:1.5rem;font-weight:600;margin-bottom:1.5rem}.preview-label{font-size:.9rem;color:var(--color-muted);margin-top:.25rem}.recovery-subtitle{font-size:1.2rem;color:var(--color-primary);font-weight:600;margin-top:.5rem;margin-bottom:1.5rem}#exerciseScreen,#recoveryScreen{justify-content:flex-start;padding-bottom:calc(1.5rem + env(safe-area-inset-bottom))}#exerciseScreen .round-info,#recoveryScreen .round-info{margin-top:.5rem}#exerciseScreen .instruction,#recoveryScreen .instruction{margin-top:1rem;min-height:4rem;display:flex;align-items:center;justify-content:center}#exerciseScreen .hexagon-container,#recoveryScreen .hexagon-container{flex:1;display:flex;align-items:center;justify-content:center;margin:0 auto;min-height:13rem}.skip-button{background:linear-gradient(135deg,var(--color-primary),#3b8d99);color:#fff;border:none;padding:1rem 3rem;margin-top:0;border-radius:1.5rem;font-size:1.1rem;font-weight:600;cursor:pointer;transition:all .3s 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var(--color-glass-shadow);padding:1.25rem 1rem;border-radius:1.5rem;text-align:center;transition:transform .2s cubic-bezier(.4,0,.2,1),box-shadow .2s ease}.stats-card:hover{transform:translateY(-2px);box-shadow:0 12px 24px var(--color-glass-shadow);border-color:#fff3}.stats-value{font-size:2rem;font-weight:700;color:var(--color-text)}.stats-value.primary{color:var(--color-primary);text-shadow:0 0 10px rgba(76,161,175,.3)}.stats-value.small{font-size:1.6rem}.stats-label{font-size:.85rem;font-weight:500;color:var(--color-muted);margin-top:.25rem}.history-section{width:100%;max-width:400px;text-align:left;margin-bottom:2rem}.history-title{color:var(--color-text);margin-bottom:1rem;font-size:1.25rem;font-weight:600}.history-list{max-height:12rem;overflow-y:auto;background:var(--color-glass-white);backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);border:1px solid var(--color-glass-border);border-radius:1.5rem;padding:.5rem;box-shadow:inset 0 2px 8px #00000026}.history-item{display:flex;justify-content:space-between;align-items:center;padding:.75rem 1rem;border-radius:1rem;transition:background .2s ease}.history-item:hover{background:#ffffff0a}.history-item:not(:last-child){border-bottom:1px solid var(--color-border)}.history-item-left{display:flex;align-items:center;gap:.75rem}.history-status-dot{width:8px;height:8px;border-radius:50%;display:inline-block;box-shadow:0 0 8px currentColor}.history-icon{font-size:1.1rem;display:inline-flex;align-items:center}.history-date{color:var(--color-muted);font-size:.9rem;font-weight:500}.history-detail{color:var(--color-text);font-size:.95rem}.stats-screen .back-btn{max-width:8rem;width:auto;margin:1rem auto 0;display:block;padding:1rem 1.5rem;font-size:.95rem;border-radius:1.25rem}.soundscape-selector-group{padding:0 1rem;width:100%}.soundscape-details{width:100%;border:1px solid var(--color-glass-border);background:var(--color-glass-white);border-radius:1.25rem;overflow:hidden;transition:all .3s ease}.soundscape-details[open]{background:#14232d66}html[data-theme=light] .soundscape-details[open]{background:#ffffffa6}.soundscape-summary{display:flex;justify-content:space-between;align-items:center;padding:.9rem 1.2rem;cursor:pointer;list-style:none;-webkit-user-select:none;user-select:none}.soundscape-summary::-webkit-details-marker{display:none}.soundscape-summary-left{display:flex;align-items:center;gap:.75rem}.soundscape-summary-left .slider-label{margin:0;font-weight:600}.soundscape-current-value{font-size:.9rem;color:var(--color-primary);font-weight:600;background:#4ca1af26;padding:.2rem .6rem;border-radius:.75rem;text-shadow:none}.soundscape-summary-right{display:flex;align-items:center}.soundscape-arrow{font-size:.75rem;color:var(--color-muted);transition:transform .3s ease}.soundscape-details[open] .soundscape-arrow{transform:rotate(180deg)}.soundscape-expanded-content{padding:0 1.2rem 1.2rem;display:flex;flex-direction:column;align-items:stretch}.soundscape-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:.6rem;margin-top:.5rem;margin-bottom:.5rem;width:100%}.soundscape-btn{display:flex;flex-direction:column;align-items:center;gap:.3rem;padding:.8rem .4rem;border:1px solid var(--color-glass-border);color:var(--color-text);border-radius:1rem;background:var(--color-glass-white);cursor:pointer;transition:all .2s ease;font-weight:600}.soundscape-btn:hover{background:#ffffff26;transform:translateY(-2px)}.soundscape-btn.active{background:var(--color-primary);color:#fff;border-color:var(--color-primary);box-shadow:0 0 15px #4ca1af66}.soundscape-icon{font-size:1.4rem}.soundscape-name{font-size:.72rem;font-weight:600;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;max-width:100%}.soundscape-test-btn{margin-top:.75rem;align-self:center;padding:.5rem 1.5rem;font-size:.85rem;font-weight:600;display:flex;align-items:center;gap:.5rem;border:1px solid var(--color-glass-border);color:var(--color-text);border-radius:1rem;background:var(--color-glass-white);cursor:pointer;transition:all .2s ease}.soundscape-test-btn:hover{background:#ffffff26;transform:translateY(-1px)}.soundscape-test-btn.testing{background:#27ae6033;border-color:var(--color-success);color:var(--color-success);box-shadow:0 0 10px #27ae604d}@media (max-height: 700px){.hexagon-container{transform:scale(.8);margin-top:-1.5rem;margin-bottom:-1.5rem}.slider-group{padding:0 .5rem}.screen{padding:.5rem}}