:root {
    --bg: #0a0a0f;
    --bg-elevated: #111118;
    --bg-card: rgba(255, 255, 255, 0.04);
    --bg-card-hover: rgba(255, 255, 255, 0.06);
    --border: rgba(255, 255, 255, 0.08);
    --border-strong: rgba(255, 255, 255, 0.12);
    --text-primary: #f0f0f5;
    --text-secondary: #8a8a9a;
    --text-muted: #5a5a6a;
    --accent: #6366f1;
    --accent-light: #818cf8;
    --accent-glow: rgba(99, 102, 241, 0.25);
    --success: #22c55e;
    --warning: #f59e0b;
    --danger: #ef4444;
    --info: #3b82f6;
    --glass: rgba(255, 255, 255, 0.03);
    --glass-border: rgba(255, 255, 255, 0.06);
    --shadow-sm: 0 1px 2px rgba(0,0,0,0.3);
    --shadow-md: 0 4px 12px rgba(0,0,0,0.4);
    --shadow-lg: 0 8px 32px rgba(0,0,0,0.5);
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 20px;
    --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --font-mono: 'JetBrains Mono', 'SF Mono', Monaco, monospace;
}

* { margin: 0; padding: 0; box-sizing: border-box; }

html, body {
    height: 100%;
    font-family: var(--font-sans);
    background: var(--bg);
    color: var(--text-primary);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    overflow: hidden;
}

.app {
    display: flex;
    flex-direction: column;
    height: 100vh;
    height: 100dvh;
    overflow: hidden;
}

/* Header */
.header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 12px 16px;
    background: var(--glass);
    backdrop-filter: blur(20px) saturate(1.4);
    -webkit-backdrop-filter: blur(20px) saturate(1.4);
    border-bottom: 1px solid var(--glass-border);
    flex-shrink: 0;
    gap: 12px;
}

.header-left, .header-right {
    display: flex;
    align-items: center;
    gap: 12px;
}

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
}

.logo-icon {
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--accent), var(--accent-light));
    border-radius: var(--radius-sm);
    color: #fff;
    box-shadow: 0 0 20px var(--accent-glow);
}

.logo-text {
    font-size: 18px;
    font-weight: 700;
    letter-spacing: -0.5px;
    background: linear-gradient(135deg, var(--text-primary), var(--accent-light));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.header-divider {
    width: 1px;
    height: 24px;
    background: var(--border);
}

.project-name {
    font-size: 13px;
    font-weight: 500;
    color: var(--text-secondary);
}

.connection-status {
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 4px 10px;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 100px;
    font-size: 12px;
    font-weight: 500;
    color: var(--text-secondary);
}

.status-dot {
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: var(--danger);
    transition: background 0.3s ease;
}

.status-dot.online { background: var(--success); box-shadow: 0 0 6px var(--success); }
.status-dot.connecting { background: var(--warning); animation: pulse 1s infinite; }

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.4; }
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 8px 14px;
    border: none;
    border-radius: var(--radius-sm);
    font-family: var(--font-sans);
    font-size: 13px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s ease;
    white-space: nowrap;
    -webkit-tap-highlight-color: transparent;
}

.btn-primary {
    background: linear-gradient(135deg, var(--accent), var(--accent-light));
    color: #fff;
    box-shadow: 0 0 16px var(--accent-glow);
}
.btn-primary:hover { transform: translateY(-1px); box-shadow: 0 0 24px var(--accent-glow); }
.btn-primary:active { transform: translateY(0); }

.btn-wake {
    background: linear-gradient(135deg, #8b5cf6, #a78bfa);
    color: #fff;
    box-shadow: 0 0 16px rgba(139, 92, 246, 0.25);
}
.btn-wake:hover { transform: translateY(-1px); box-shadow: 0 0 24px rgba(139, 92, 246, 0.35); }
.btn-wake:active { transform: translateY(0); }

.btn-secondary {
    background: var(--bg-card);
    color: var(--text-secondary);
    border: 1px solid var(--border);
}
.btn-secondary:hover { background: var(--bg-card-hover); color: var(--text-primary); }

.btn-danger {
    background: rgba(239, 68, 68, 0.15);
    color: var(--danger);
    border: 1px solid rgba(239, 68, 68, 0.2);
}
.btn-danger:hover { background: rgba(239, 68, 68, 0.25); }

/* Stats Bar */
.stats-bar {
    display: flex;
    gap: 8px;
    padding: 10px 16px;
    flex-shrink: 0;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none;
}
.stats-bar::-webkit-scrollbar { display: none; }

.stat-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    min-width: 64px;
    padding: 8px 12px;
    background: var(--glass);
    backdrop-filter: blur(12px);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-md);
    transition: all 0.2s ease;
}
.stat-item:hover { background: var(--bg-card-hover); border-color: var(--border-strong); }

.stat-value {
    font-size: 18px;
    font-weight: 700;
    color: var(--text-primary);
    line-height: 1.2;
}

.stat-label {
    font-size: 10px;
    font-weight: 500;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-top: 2px;
}

/* Board */
.board {
    display: flex;
    gap: 12px;
    padding: 0 16px 16px;
    overflow-x: auto;
    overflow-y: hidden;
    flex: 1;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: thin;
    scrollbar-color: var(--border) transparent;
}
.board::-webkit-scrollbar { height: 6px; }
.board::-webkit-scrollbar-track { background: transparent; }
.board::-webkit-scrollbar-thumb { background: var(--border); border-radius: 3px; }

/* Column */
.column {
    display: flex;
    flex-direction: column;
    min-width: 280px;
    max-width: 320px;
    width: 100%;
    background: var(--glass);
    backdrop-filter: blur(16px) saturate(1.2);
    -webkit-backdrop-filter: blur(16px) saturate(1.2);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-lg);
    overflow: hidden;
    transition: border-color 0.2s ease;
}

.column.drag-over {
    border-color: var(--accent-light);
    box-shadow: 0 0 20px var(--accent-glow);
}

.column-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 12px 14px;
    border-bottom: 1px solid var(--glass-border);
    flex-shrink: 0;
}

.column-title {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 13px;
    font-weight: 600;
    color: var(--text-primary);
}

.column-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
}
.column-dot.backlog { background: var(--text-muted); }
.column-dot.todo { background: var(--info); }
.column-dot.inprogress { background: var(--warning); }
.column-dot.review { background: var(--accent-light); }
.column-dot.done { background: var(--success); }

.column-count {
    font-size: 12px;
    font-weight: 600;
    color: var(--text-muted);
    background: var(--bg-card);
    padding: 2px 8px;
    border-radius: 100px;
}

.column-body {
    display: flex;
    flex-direction: column;
    gap: 8px;
    padding: 10px;
    overflow-y: auto;
    flex: 1;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: thin;
    scrollbar-color: var(--border) transparent;
}
.column-body::-webkit-scrollbar { width: 4px; }
.column-body::-webkit-scrollbar-track { background: transparent; }
.column-body::-webkit-scrollbar-thumb { background: var(--border); border-radius: 2px; }

/* Card */
.card {
    display: flex;
    flex-direction: column;
    gap: 8px;
    padding: 12px;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    cursor: grab;
    transition: all 0.2s ease;
    position: relative;
    -webkit-tap-highlight-color: transparent;
    touch-action: manipulation;
}
.card:hover {
    background: var(--bg-card-hover);
    border-color: var(--border-strong);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}
.card:active { cursor: grabbing; }
.card.dragging {
    opacity: 0.6;
    transform: rotate(2deg) scale(0.98);
    box-shadow: var(--shadow-lg);
}

.card-priority {
    position: absolute;
    top: 0;
    left: 12px;
    width: 28px;
    height: 3px;
    border-radius: 0 0 4px 4px;
}
.card-priority.low { background: var(--success); }
.card-priority.medium { background: var(--info); }
.card-priority.high { background: var(--warning); }
.card-priority.critical { background: var(--danger); }

.card-header {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: 8px;
    padding-top: 4px;
}

.card-title {
    font-size: 13px;
    font-weight: 600;
    color: var(--text-primary);
    line-height: 1.4;
    word-break: break-word;
}

.card-menu-btn {
    width: 24px;
    height: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: none;
    border: none;
    color: var(--text-muted);
    cursor: pointer;
    border-radius: 4px;
    flex-shrink: 0;
    transition: all 0.15s ease;
}
.card-menu-btn:hover { background: var(--bg-card-hover); color: var(--text-secondary); }

.card-desc {
    font-size: 12px;
    color: var(--text-secondary);
    line-height: 1.5;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.card-meta {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 8px;
    flex-wrap: wrap;
}

.card-agent {
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: 11px;
    font-weight: 500;
    color: var(--text-secondary);
}

.card-agent-avatar {
    width: 20px;
    height: 20px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--accent), var(--accent-light));
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 9px;
    font-weight: 700;
    color: #fff;
}

.card-time {
    display: flex;
    align-items: center;
    gap: 4px;
    font-size: 11px;
    font-weight: 500;
    color: var(--text-muted);
    font-family: var(--font-mono);
}

.card-time.overdue { color: var(--danger); }

.card-footer {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 8px;
    padding-top: 4px;
    border-top: 1px solid var(--border);
}

.card-status {
    display: flex;
    align-items: center;
    gap: 4px;
    font-size: 11px;
    font-weight: 500;
}
.card-status .status-dot { width: 5px; height: 5px; }
.card-status.online { color: var(--success); }
.card-status.offline { color: var(--text-muted); }
.card-status.busy { color: var(--warning); }

.card-actions {
    display: flex;
    gap: 4px;
}

.card-action-btn {
    width: 22px;
    height: 22px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: none;
    border: none;
    color: var(--text-muted);
    cursor: pointer;
    border-radius: 4px;
    transition: all 0.15s ease;
}
.card-action-btn:hover { background: var(--bg-card-hover); color: var(--text-secondary); }
.card-action-btn.delete:hover { color: var(--danger); }

/* Card Menu Dropdown */
.card-menu {
    position: absolute;
    top: 32px;
    right: 8px;
    background: var(--bg-elevated);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    box-shadow: var(--shadow-lg);
    z-index: 50;
    min-width: 160px;
    overflow: hidden;
    display: none;
}
.card-menu.open { display: block; }

.card-menu-item {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 8px 12px;
    font-size: 12px;
    font-weight: 500;
    color: var(--text-secondary);
    cursor: pointer;
    transition: all 0.15s ease;
    border: none;
    background: none;
    width: 100%;
    text-align: left;
    font-family: var(--font-sans);
}
.card-menu-item:hover { background: var(--bg-card); color: var(--text-primary); }
.card-menu-item.delete { color: var(--danger); }
.card-menu-item.delete:hover { background: rgba(239, 68, 68, 0.1); }

/* Modal */
.modal-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.7);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 16px;
    z-index: 100;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.25s ease;
}
.modal-overlay.open {
    opacity: 1;
    pointer-events: auto;
}

.modal {
    width: 100%;
    max-width: 480px;
    background: var(--bg-elevated);
    border: 1px solid var(--border);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-lg);
    transform: translateY(16px) scale(0.96);
    transition: transform 0.25s cubic-bezier(0.16, 1, 0.3, 1);
    overflow: hidden;
}
.modal-overlay.open .modal {
    transform: translateY(0) scale(1);
}

.modal-sm { max-width: 360px; }

.modal-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 16px 20px;
    border-bottom: 1px solid var(--border);
}
.modal-header h2 {
    font-size: 16px;
    font-weight: 600;
    color: var(--text-primary);
}

.modal-close {
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    color: var(--text-secondary);
    cursor: pointer;
    transition: all 0.15s ease;
}
.modal-close:hover { background: var(--bg-card-hover); color: var(--text-primary); }

.modal-body { padding: 16px 20px 20px; }

/* Form */
.form-group {
    display: flex;
    flex-direction: column;
    gap: 6px;
    margin-bottom: 14px;
}
.form-group label {
    font-size: 12px;
    font-weight: 600;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}
.form-group input,
.form-group textarea,
.form-group select {
    padding: 10px 12px;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    color: var(--text-primary);
    font-family: var(--font-sans);
    font-size: 14px;
    outline: none;
    transition: all 0.2s ease;
    -webkit-appearance: none;
    appearance: none;
}
.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
    border-color: var(--accent-light);
    box-shadow: 0 0 0 3px var(--accent-glow);
}
.form-group input::placeholder,
.form-group textarea::placeholder { color: var(--text-muted); }
.form-group select {
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%238a8a9a' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 12px center;
    padding-right: 32px;
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 12px;
}

.modal-actions {
    display: flex;
    justify-content: flex-end;
    gap: 10px;
    margin-top: 4px;
}

/* Toast */
.toast-container {
    position: fixed;
    bottom: 20px;
    right: 20px;
    display: flex;
    flex-direction: column;
    gap: 8px;
    z-index: 200;
    pointer-events: none;
}

.toast {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 12px 16px;
    background: var(--bg-elevated);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-lg);
    font-size: 13px;
    font-weight: 500;
    color: var(--text-primary);
    pointer-events: auto;
    animation: toastIn 0.3s cubic-bezier(0.16, 1, 0.3, 1);
    max-width: 320px;
}
.toast.success { border-color: var(--success); }
.toast.error { border-color: var(--danger); }
.toast.warning { border-color: var(--warning); }
.toast.info { border-color: var(--accent-light); }

.toast-exit {
    animation: toastOut 0.25s ease forwards;
}

@keyframes toastIn {
    from { opacity: 0; transform: translateY(12px) scale(0.95); }
    to { opacity: 1; transform: translateY(0) scale(1); }
}
@keyframes toastOut {
    from { opacity: 1; transform: translateY(0) scale(1); }
    to { opacity: 0; transform: translateY(8px) scale(0.95); }
}

/* Mobile */
@media (max-width: 768px) {
    .header {
        padding: 10px 12px;
    }
    .logo-text {
        display: none;
    }
    .project-name {
        display: none;
    }
    .header-divider {
        display: none;
    }
    .btn span {
        display: none;
    }
    .btn {
        padding: 8px;
    }
    .stats-bar {
        padding: 8px 12px;
    }
    .stat-item {
        min-width: 56px;
        padding: 6px 10px;
    }
    .board {
        padding: 0 12px 12px;
        gap: 10px;
    }
    .column {
        min-width: 260px;
        max-width: 280px;
    }
    .modal-overlay {
        padding: 12px;
        align-items: flex-end;
    }
    .modal {
        max-width: 100%;
        border-radius: var(--radius-lg) var(--radius-lg) 0 0;
    }
    .modal-overlay.open .modal {
        transform: translateY(0);
    }
    .modal {
        transform: translateY(100%);
    }
    .form-row {
        grid-template-columns: 1fr;
    }
    .toast-container {
        left: 12px;
        right: 12px;
        bottom: 12px;
    }
    .toast {
        max-width: 100%;
    }
}

/* Landscape phone */
@media (max-height: 500px) and (orientation: landscape) {
    .stats-bar {
        display: none;
    }
    .modal-overlay {
        align-items: center;
    }
    .modal {
        border-radius: var(--radius-lg);
        transform: translateY(16px) scale(0.96);
    }
    .modal-overlay.open .modal {
        transform: translateY(0) scale(1);
    }
}

/* Touch device optimizations */
@media (hover: none) {
    .card:hover {
        transform: none;
        box-shadow: none;
    }
    .card:active {
        background: var(--bg-card-hover);
    }
}

/* Reduced motion */
@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}