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var(--text-login-title);--border-login-input: rgba(28, 28, 30, .08);--text-on-accent: #FFFFFF;--login-accent: #6E9FE8;--login-accent-hover: #5A8FD4;--login-accent-subtle: rgba(110, 159, 232, .12);--login-accent-hover-bg: rgba(110, 159, 232, .2);--login-bg-hover: rgba(28, 28, 30, .04);--login-text-muted: #6E6E73;--shadow-login-card: 0 8px 32px rgba(28, 28, 30, .08);--login-shadow-warm: 0 4px 24px rgba(45, 42, 38, .06);--bg-app-dark: #0D0D0F;--bg-card-dark: #1C1C1E;--bg-elevated-dark: #2C2C2E;--bg-hover-dark: rgba(255, 255, 255, .08);--border-dark: rgba(255, 255, 255, .1);--border-hover-dark: rgba(255, 255, 255, .16);--border-elevated-dark: rgba(255, 255, 255, .2);--text-primary-dark: #F2F2F7;--text-muted-dark: #8E8E93;--text-faint-dark: #636366;--text-placeholder-dark: #48484A}[data-theme=dark]{--bg-app: var(--bg-app-dark);--bg-header: var(--bg-card-dark);--bg-sidebar: var(--bg-card-dark);--bg-card: var(--bg-card-dark);--bg-input: var(--bg-elevated-dark);--bg-hover: var(--bg-hover-dark);--bg-elevated: var(--bg-elevated-dark);--text-primary: var(--text-primary-dark);--text-muted: var(--text-muted-dark);--text-faint: var(--text-faint-dark);--accent: #6E9FE8;--accent-hover: #8AB4EF;--accent-subtle: rgba(110, 159, 232, .18);--border: var(--border-dark);--border-subtle: rgba(255, 255, 255, .06);--color-error: #FF6B6B;--color-error-subtle: rgba(255, 107, 107, .18);--color-success: #7FD99C;--color-success-subtle-bg: rgba(127, 217, 156, .14);--color-success-subtle-border: rgba(127, 217, 156, .35);--color-error-subtle-bg: rgba(255, 107, 107, .14);--color-error-subtle-border: rgba(255, 107, 107, .35);--card-selected-bg: #1A2636;--card-correct-bg: #1E2B1F;--card-incorrect-bg: #2E1C1C;--color-new-today-bg: #2C2318;--color-new-today: #F6A86E;--color-to-review-bg: #241E33;--color-to-review: #A78BFA;--cefr-a1: #6E9FE8;--cefr-a1-bg: rgba(110, 159, 232, .18);--cefr-a2: #7BC453;--cefr-a2-bg: rgba(123, 196, 83, .18);--cefr-b1: #E6B55A;--cefr-b1-bg: rgba(230, 181, 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transparent;--border-login-card: var(--border-dark);--text-login-brand: var(--text-primary-dark);--text-login-title: var(--text-primary-dark);--text-login-input: var(--text-faint-dark);--text-login-value: var(--text-login-title);--border-login-input: rgba(255, 255, 255, .1);--text-on-accent: #FFFFFF;--login-accent: #6E9FE8;--login-accent-hover: #8AB4EF;--login-accent-subtle: rgba(110, 159, 232, .18);--login-accent-hover-bg: rgba(110, 159, 232, .24);--login-bg-hover: rgba(255, 255, 255, .06);--login-text-muted: var(--text-muted-dark);--shadow-login-card: 0 8px 32px rgba(0, 0, 0, .3);--login-shadow-warm: 0 4px 24px rgba(0, 0, 0, .2)}.btn-primary,.btn-secondary{display:inline-flex;align-items:center;justify-content:center;gap:var(--space-2);padding:var(--space-2) var(--space-4);border-radius:var(--radius-md);font-weight:500;font-size:.88rem;border:none;cursor:pointer;min-height:36px;transition:background var(--transition),border-color var(--transition),transform var(--transition)}.btn:has(>svg:first-child){padding-inline-start:calc(var(--space-4) - 2px)}.btn:has(>svg:last-child){padding-inline-end:calc(var(--space-4) - 2px)}.btn-primary{background:var(--accent);color:var(--text-on-accent)}.btn-primary:hover{background:var(--accent-hover)}.btn-primary:active{transform:scale(.96)}.btn-primary:disabled{opacity:.4;cursor:not-allowed}.btn-secondary{background:var(--bg-input);color:var(--text-primary);border:1px solid var(--border)}.btn-secondary:hover{background:var(--bg-hover);border-color:var(--accent)}.btn-secondary:active{transform:scale(.96)}.btn-ghost{display:inline-flex;align-items:center;justify-content:center;gap:var(--space-2);padding:var(--space-2) var(--space-4);border-radius:var(--radius-md);font-weight:500;font-size:.88rem;background:transparent;color:var(--text-primary);border:1px solid var(--border);cursor:pointer;min-height:36px;transition:background var(--transition),border-color var(--transition),transform 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var(--space-4);line-height:1.5}.modal-actions{display:flex;gap:var(--space-2);justify-content:flex-end;margin-top:var(--space-4)}.modal-content{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius-lg);width:480px;max-width:90vw;max-height:80vh;display:flex;flex-direction:column;box-shadow:var(--shadow-modal)}@media (max-width: 768px){.modal-content{max-width:92vw}}.modal-content--sm{width:420px}.modal-content--xs{width:400px}.modal-content--narrow{max-width:480px}.modal-header{display:flex;align-items:center;justify-content:space-between;padding:var(--space-8) var(--space-8) var(--space-3)}.modal-header h2{font-size:1.1rem;font-weight:600}.modal-close{background:none;border:none;font-size:1.3rem;color:var(--text-faint);cursor:pointer;padding:var(--space-1);border-radius:var(--radius-sm);transition:background var(--transition),transform 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