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rgba(0, 0, 0, .1), 0 2px 4px -1px rgba(0, 0, 0, .06);--shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, .1), 0 4px 6px -2px rgba(0, 0, 0, .05);--shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, .1), 0 10px 10px -5px rgba(0, 0, 0, .04);--shadow-inner: inset 0 2px 4px 0 rgba(0, 0, 0, .06);--shadow-outline: 0 0 0 3px rgba(66, 153, 225, .5);--transition-fast: .15s cubic-bezier(.4, 0, .2, 1);--transition-normal: .25s cubic-bezier(.4, 0, .2, 1);--transition-slow: .35s cubic-bezier(.4, 0, .2, 1);--sidebar-width-expanded: 250px;--sidebar-width-collapsed: 80px;--header-height: 70px;--footer-height: 50px;--z-dropdown: 1000;--z-sticky: 1020;--z-fixed: 1030;--z-modal-backdrop: 1040;--z-modal: 1050;--z-popover: 1060;--z-toast: 1070}:root{--primary-h: 217;--primary-s: 91%;--primary-l: 60%}[data-theme-preset=ocean-blue]{--primary-h: 217;--primary-s: 91%;--primary-l: 60%}[data-theme-preset=emerald]{--primary-h: 142;--primary-s: 72%;--primary-l: 35%}[data-theme-preset=violet]{--primary-h: 262;--primary-s: 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var(--spacing-12) var(--spacing-4);position:relative;flex-shrink:0}.onboarding-step-item{display:flex;flex-direction:column;align-items:center;gap:var(--spacing-3);z-index:5;position:relative}.onboarding-step-circle{width:38px;height:38px;border-radius:var(--radius-full);display:flex;align-items:center;justify-content:center;font-size:var(--font-xs);font-weight:var(--weight-bold);transition:all .4s cubic-bezier(.175,.885,.32,1.275);box-shadow:0 4px 10px #00000005}.onboarding-step-circle.active{background:linear-gradient(135deg,var(--primary) 0%,#4f46e5 100%);color:#fff;border:3px solid var(--bg-card);box-shadow:0 0 0 2.5px var(--primary),0 8px 16px #6366f140;transform:scale(1.1)}.onboarding-step-circle.completed{background-color:var(--status-success);color:#fff;border:none;box-shadow:0 4px 12px #10b98140}.onboarding-step-circle.pending{background-color:var(--bg-app);color:var(--text-muted);border:2px solid var(--border-color)}.onboarding-step-label{font-size:11px;font-weight:700;letter-spacing:.02em;transition:color var(--transition-fast)}.onboarding-step-label.active{color:var(--primary)}.onboarding-step-label.inactive{color:var(--text-muted)}.onboarding-stepper-line{position:absolute;top:19px;left:calc(var(--spacing-12) + 19px);right:calc(var(--spacing-12) + 19px);height:4px;background-color:var(--border-color);z-index:1;border-radius:var(--radius-full);overflow:hidden}.onboarding-stepper-progress{height:100%;background:linear-gradient(90deg,var(--primary) 0%,#4f46e5 100%);transition:width .4s ease}.onboarding-content-body{padding:var(--spacing-6) var(--spacing-12);flex:1;overflow-y:auto;display:flex;flex-direction:column;justify-content:flex-start;align-items:center}.onboarding-step-pane{display:flex;flex-direction:column;align-items:center;text-align:center;animation:fadeIn var(--transition-normal) forwards;width:100%;max-width:900px;margin:auto 0}.onboarding-icon-badge{width:60px;height:60px;border-radius:var(--radius-2xl);background:linear-gradient(135deg,#6366f11a,#10b98114);border:1px solid var(--primary-border);color:var(--primary);display:flex;align-items:center;justify-content:center;margin-bottom:var(--spacing-4);box-shadow:0 10px 25px #6366f114}.onboarding-pane-title{font-size:20px;font-weight:850;color:var(--text-main);margin:0 0 var(--spacing-2) 0;letter-spacing:-.02em}.onboarding-pane-subtitle{font-size:13.5px;color:var(--text-muted);margin-bottom:var(--spacing-8);line-height:1.5;max-width:580px;font-weight:550}.onboarding-options-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:var(--spacing-3);width:100%}.onboarding-options-grid.two-cols{grid-template-columns:repeat(2,1fr)}.premium-option-card{display:flex;flex-direction:column;align-items:center;justify-content:center;padding:var(--spacing-4) var(--spacing-3);background-color:var(--bg-card);border:1.5px solid var(--border-color);border-radius:var(--radius-xl);color:var(--text-main);font-weight:var(--weight-semibold);font-size:var(--font-sm);cursor:pointer;transition:all .25s cubic-bezier(.4,0,.2,1);position:relative;overflow:hidden;box-shadow:0 2px 4px #00000003;min-height:72px}.premium-option-card:hover{transform:translateY(-4px);border-color:var(--primary-border);background-color:var(--primary-light);box-shadow:0 12px 24px -8px #6366f126}.premium-option-card.selected{border-color:var(--primary);background:linear-gradient(135deg,#6366f10a,#6366f117);color:var(--primary);box-shadow:0 8px 24px -6px #6366f133;transform:translateY(-2px);font-weight:var(--weight-bold)}.language-name{font-size:15px;font-weight:700}.accent-card{padding:var(--spacing-6) var(--spacing-4);gap:var(--spacing-3);min-height:110px}.accent-code-badge{font-size:11px;font-weight:800;letter-spacing:.05em;padding:4px 10px;border-radius:var(--radius-full);background-color:var(--bg-app);border:1px solid var(--border-color);color:var(--text-muted);transition:all .2s ease}.accent-card.selected .accent-code-badge{background-color:var(--primary);border-color:var(--primary);color:#fff;box-shadow:0 2px 8px #6366f140}.accent-name-label{font-size:15px;font-weight:700;transition:color .2s ease}@keyframes pop-check{0%{transform:scale(0);opacity:0}to{transform:scale(1);opacity:1}}.premium-option-card.selected:after,.onboarding-practice-card.selected:after{content:"";position:absolute;top:12px;right:12px;width:18px;height:18px;border-radius:var(--radius-full);background-color:var(--primary);background-image:url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='white' stroke-width='4.5' stroke-linecap='round' stroke-linejoin='round'><polyline points='20 6 9 17 4 12'></polyline></svg>");background-repeat:no-repeat;background-position:center;background-size:10px;box-shadow:0 2px 6px #6366f14d;animation:pop-check .25s cubic-bezier(.175,.885,.32,1.275) forwards;z-index:5}.onboarding-practice-card{display:flex;flex-direction:column;align-items:center;justify-content:center;padding:var(--spacing-6) var(--spacing-5);background-color:var(--bg-card);border:1.5px solid var(--border-color);border-radius:var(--radius-xl);cursor:pointer;transition:all .25s cubic-bezier(.4,0,.2,1);box-shadow:0 2px 4px #00000003;position:relative;overflow:hidden}.onboarding-practice-card:hover{transform:translateY(-4px);border-color:var(--primary-border);background-color:var(--primary-light);box-shadow:0 12px 24px -8px #6366f126}.onboarding-practice-card.selected{border-color:var(--primary);background:linear-gradient(135deg,#6366f10a,#6366f117);box-shadow:0 10px 28px -8px #6366f138}.onboarding-practice-minutes{font-size:2.2rem;font-weight:800;line-height:1;letter-spacing:-.04em;margin-bottom:var(--spacing-2);color:var(--text-main);transition:color var(--transition-fast)}.onboarding-practice-minutes.selected{color:var(--primary)}.onboarding-practice-desc{font-size:12px;font-weight:600;color:var(--text-muted)}.diurnal-card{display:flex;flex-direction:column;align-items:center;justify-content:center;padding:var(--spacing-6) var(--spacing-5);background-color:var(--bg-card);border:1.5px solid var(--border-color);border-radius:var(--radius-xl);cursor:pointer;transition:all .3s cubic-bezier(.4,0,.2,1);position:relative;overflow:hidden;box-shadow:0 4px 6px -1px #00000003}.diurnal-card:hover{transform:translateY(-4px);box-shadow:0 12px 24px -10px #0000001a}.diurnal-icon{display:flex;align-items:center;justify-content:center;margin-bottom:var(--spacing-2);color:var(--text-muted);transition:color var(--transition-fast),transform var(--transition-fast)}.diurnal-card:hover .diurnal-icon{transform:translateY(-2px)}.diurnal-card.morning:hover,.diurnal-card.morning.selected{border-color:#f59e0b;background:linear-gradient(135deg,#f59e0b05,#fbbf2414)}.diurnal-card.morning.selected{box-shadow:0 8px 24px -8px #f59e0b40}.diurnal-card.morning:hover .diurnal-icon,.diurnal-card.morning.selected .diurnal-icon{color:#d97706}.diurnal-card.afternoon:hover,.diurnal-card.afternoon.selected{border-color:#3b82f6;background:linear-gradient(135deg,#3b82f605,#60a5fa14)}.diurnal-card.afternoon.selected{box-shadow:0 8px 24px -8px #3b82f640}.diurnal-card.afternoon:hover .diurnal-icon,.diurnal-card.afternoon.selected .diurnal-icon{color:#2563eb}.diurnal-card.evening:hover,.diurnal-card.evening.selected{border-color:#ec4899;background:linear-gradient(135deg,#ec489905,#f472b614)}.diurnal-card.evening.selected{box-shadow:0 8px 24px -8px #ec489940}.diurnal-card.evening:hover .diurnal-icon,.diurnal-card.evening.selected 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