:root{--color-bg-primary: #0f0f1a;--color-bg-secondary: #1a1a2e;--color-bg-card: #252540;--color-bg-column: #1e1e35;--color-accent: #6366f1;--color-accent-hover: #818cf8;--color-text-primary: #f8fafc;--color-text-secondary: #94a3b8;--color-text-muted: #64748b;--color-border: #334155;--color-success: #22c55e;--color-warning: #f59e0b;--color-danger: #ef4444;--gradient-accent: linear-gradient(135deg, #6366f1 0%, #8b5cf6 100%);--gradient-glass: linear-gradient(135deg, rgba(255,255,255,.1) 0%, rgba(255,255,255,.05) 100%);--shadow-sm: 0 2px 4px rgba(0, 0, 0, .3);--shadow-md: 0 4px 12px rgba(0, 0, 0, .4);--shadow-lg: 0 8px 24px rgba(0, 0, 0, .5);--shadow-glow: 0 0 20px rgba(99, 102, 241, .3);--space-xs: .25rem;--space-sm: .5rem;--space-md: 1rem;--space-lg: 1.5rem;--space-xl: 2rem;--radius-sm: .375rem;--radius-md: .75rem;--radius-lg: 1rem;--radius-xl: 1.5rem;--transition-fast: .15s ease;--transition-normal: .25s ease;--transition-slow: .35s ease;font-family:Inter,system-ui,-apple-system,sans-serif;line-height:1.5;font-weight:400;color:var(--color-text-primary);background-color:var(--color-bg-primary);font-synthesis:none;text-rendering:optimizeLegibility;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}*{box-sizing:border-box;margin:0;padding:0}body{min-height:100vh;min-height:100dvh;overflow-x:hidden}#root{min-height:100vh;min-height:100dvh;display:flex;flex-direction:column}.visually-hidden{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}.header{padding:var(--space-md);background:var(--gradient-glass);-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);border-bottom:1px solid var(--color-border);position:sticky;top:0;z-index:100}.header__title{font-size:1.25rem;font-weight:700;background:var(--gradient-accent);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}.board{flex:1;display:flex;flex-direction:column;padding:var(--space-md);gap:var(--space-md)}.column-tabs{display:flex;gap:var(--space-sm);overflow-x:auto;padding-bottom:var(--space-sm);-webkit-overflow-scrolling:touch;scrollbar-width:none}.column-tabs::-webkit-scrollbar{display:none}.column-tab{flex-shrink:0;padding:var(--space-sm) var(--space-md);background:var(--color-bg-secondary);border:1px solid var(--color-border);border-radius:var(--radius-md);color:var(--color-text-secondary);font-size:.875rem;font-weight:500;cursor:pointer;transition:all var(--transition-fast);min-width:44px;min-height:44px;display:flex;align-items:center;justify-content:center}.column-tab--active{background:var(--gradient-accent);color:var(--color-text-primary);border-color:transparent;box-shadow:var(--shadow-glow)}.column-tab:not(.column-tab--active):hover{background:var(--color-bg-card);border-color:var(--color-accent)}.columns-container{flex:1;display:flex;flex-direction:column}.column{flex:1;display:none;flex-direction:column;gap:var(--space-md);animation:fadeIn var(--transition-normal)}.column--active{display:flex}@keyframes fadeIn{0%{opacity:0;transform:translateY(8px)}to{opacity:1;transform:translateY(0)}}.column__header{display:flex;align-items:center;justify-content:space-between;padding:var(--space-sm) 0}.column__title{font-size:.875rem;font-weight:600;color:var(--color-text-secondary);text-transform:uppercase;letter-spacing:.05em}.column__count{background:var(--color-bg-card);padding:var(--space-xs) var(--space-sm);border-radius:var(--radius-sm);font-size:.75rem;font-weight:600;color:var(--color-text-muted)}.column__cards{flex:1;display:flex;flex-direction:column;gap:var(--space-sm);min-height:200px;padding:var(--space-sm);background:var(--color-bg-column);border-radius:var(--radius-lg);border:2px dashed transparent;transition:all var(--transition-fast)}.column__cards--drop-target{border-color:var(--color-accent);background:#6366f11a}.card{background:var(--color-bg-card);border-radius:var(--radius-md);padding:var(--space-md);border:1px solid var(--color-border);cursor:grab;transition:all var(--transition-fast);touch-action:manipulation}.card:hover{border-color:var(--color-accent);box-shadow:var(--shadow-md);transform:translateY(-2px)}.card:active{cursor:grabbing}.card--dragging{opacity:.8;box-shadow:var(--shadow-lg);transform:rotate(2deg) scale(1.02)}.card__title{font-size:.9375rem;font-weight:500;color:var(--color-text-primary);margin-bottom:var(--space-xs)}.card__description{font-size:.8125rem;color:var(--color-text-muted);line-height:1.4}.add-card-btn{width:100%;padding:var(--space-md);background:transparent;border:2px dashed var(--color-border);border-radius:var(--radius-md);color:var(--color-text-muted);font-size:.875rem;font-weight:500;cursor:pointer;transition:all var(--transition-fast);min-height:44px}.add-card-btn:hover{border-color:var(--color-accent);color:var(--color-accent);background:#6366f10d}.board-list{flex:1;padding:var(--space-lg);display:flex;flex-direction:column;gap:var(--space-md)}.board-list__title{font-size:1.5rem;font-weight:700;margin-bottom:var(--space-md)}.board-card{background:var(--gradient-glass);-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);border:1px solid var(--color-border);border-radius:var(--radius-lg);padding:var(--space-lg);cursor:pointer;transition:all var(--transition-fast)}.board-card:hover{border-color:var(--color-accent);box-shadow:var(--shadow-glow);transform:translateY(-2px)}.board-card__name{font-size:1.125rem;font-weight:600;margin-bottom:var(--space-xs)}.board-card__meta{font-size:.8125rem;color:var(--color-text-muted)}.create-board-btn{background:var(--gradient-accent);border:none;border-radius:var(--radius-lg);padding:var(--space-lg);color:var(--color-text-primary);font-size:1rem;font-weight:600;cursor:pointer;transition:all var(--transition-fast);min-height:44px;box-shadow:var(--shadow-glow)}.create-board-btn:hover{transform:translateY(-2px);box-shadow:var(--shadow-lg),var(--shadow-glow)}.modal-overlay{position:fixed;inset:0;background:#000000b3;-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px);display:flex;align-items:flex-end;justify-content:center;padding:0;z-index:1000;animation:fadeIn var(--transition-fast)}.modal{width:100%;max-height:90vh;background:var(--color-bg-secondary);border-radius:var(--radius-xl) var(--radius-xl) 0 0;padding:var(--space-lg);animation:slideUp var(--transition-normal)}@keyframes slideUp{0%{transform:translateY(100%)}to{transform:translateY(0)}}.modal__header{display:flex;align-items:center;justify-content:space-between;margin-bottom:var(--space-lg)}.modal__title{font-size:1.125rem;font-weight:600}.modal__close{width:44px;height:44px;display:flex;align-items:center;justify-content:center;background:transparent;border:1px solid var(--color-border);border-radius:var(--radius-md);color:var(--color-text-secondary);cursor:pointer;transition:all var(--transition-fast)}.modal__close:hover{background:var(--color-bg-card);border-color:var(--color-danger);color:var(--color-danger)}.form-group{margin-bottom:var(--space-md)}.form-label{display:block;font-size:.875rem;font-weight:500;color:var(--color-text-secondary);margin-bottom:var(--space-xs)}.form-input{width:100%;padding:var(--space-md);background:var(--color-bg-card);border:1px solid var(--color-border);border-radius:var(--radius-md);color:var(--color-text-primary);font-size:1rem;font-family:inherit;transition:all var(--transition-fast);min-height:44px}.form-input:focus{outline:none;border-color:var(--color-accent);box-shadow:0 0 0 3px #6366f133}.form-textarea{resize:vertical;min-height:100px}.form-btn{width:100%;padding:var(--space-md);background:var(--gradient-accent);border:none;border-radius:var(--radius-md);color:var(--color-text-primary);font-size:1rem;font-weight:600;cursor:pointer;transition:all var(--transition-fast);min-height:44px}.form-btn:hover{box-shadow:var(--shadow-glow)}.form-btn:disabled{opacity:.5;cursor:not-allowed}.loading{display:flex;align-items:center;justify-content:center;min-height:200px;color:var(--color-text-muted)}.spinner{width:40px;height:40px;border:3px solid var(--color-border);border-top-color:var(--color-accent);border-radius:50%;animation:spin .8s linear infinite}@keyframes spin{to{transform:rotate(360deg)}}@media(min-width:768px){.column-tabs{display:none}.columns-container{flex-direction:row;gap:var(--space-lg);overflow-x:auto;padding-bottom:var(--space-md)}.column{display:flex!important;flex:0 0 320px;min-width:280px;max-width:400px}.modal-overlay{align-items:center;padding:var(--space-lg)}.modal{max-width:500px;border-radius:var(--radius-xl)}}@media(min-width:1200px){.header{padding:var(--space-lg) var(--space-xl)}.board{padding:var(--space-xl)}.columns-container{overflow-x:visible}.column{flex:1;max-width:none}}