:root {
    --bg-color: #0f111a;
    --sidebar-bg: rgba(23, 25, 35, 0.6);
    --glass-bg: rgba(255, 255, 255, 0.05);
    --glass-border: rgba(255, 255, 255, 0.1);
    --text-primary: #ffffff;
    --text-secondary: #94a3b8;
    --accent-color: #6366f1;
    --accent-hover: #4f46e5;
    --danger-color: #ef4444;
    --success-color: #22c55e;
    --card-bg: rgba(30, 41, 59, 0.7);
    --column-bg: rgba(15, 23, 42, 0.3);

    --font-main: 'Outfit', sans-serif;

    --transition-speed: 0.3s;
}

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

body {
    font-family: var(--font-main);
    background-color: var(--bg-color);
    color: var(--text-primary);
    height: 100vh;
    overflow: hidden;
    background-image:
        radial-gradient(circle at 10% 20%, rgba(99, 102, 241, 0.15) 0%, transparent 20%),
        radial-gradient(circle at 90% 80%, rgba(236, 72, 153, 0.15) 0%, transparent 20%);
}

/* Glassmorphism Utility */
.glass {
    background: var(--glass-bg);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid var(--glass-border);
}

.app-container {
    display: flex;
    height: 100vh;
}

/* Sidebar */
.sidebar {
    width: 80px;
    height: 100%;
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 2rem 0;
    border-right: 1px solid var(--glass-border);
    z-index: 10;
}

.logo {
    font-size: 2rem;
    color: var(--accent-color);
    margin-bottom: 3rem;
}

.nav-menu {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
    width: 100%;
    align-items: center;
}

.nav-item {
    color: var(--text-secondary);
    font-size: 1.5rem;
    padding: 10px;
    border-radius: 12px;
    transition: var(--transition-speed);
    text-decoration: none;
    display: flex;
    justify-content: center;
    align-items: center;
    width: 50px;
    height: 50px;
}

.nav-item:hover,
.nav-item.active {
    color: var(--accent-color);
    background: rgba(99, 102, 241, 0.1);
}

.user-profile img {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    border: 2px solid var(--glass-border);
}

/* Main Content */
.main-content {
    flex: 1;
    display: flex;
    flex-direction: column;
    position: relative;
    overflow: hidden;
}

.top-bar {
    height: 80px;
    padding: 0 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-bottom: 1px solid var(--glass-border);
}

.header-left h1 {
    font-size: 1.5rem;
    font-weight: 600;
}

.date-display {
    color: var(--text-secondary);
    font-size: 0.9rem;
    margin-top: 4px;
}

.header-right {
    display: flex;
    gap: 1.5rem;
    align-items: center;
}

.search-bar {
    position: relative;
    background: rgba(255, 255, 255, 0.05);
    border-radius: 10px;
    padding: 8px 16px;
    display: flex;
    align-items: center;
    width: 300px;
    border: 1px solid var(--glass-border);
}

.search-bar i {
    color: var(--text-secondary);
    margin-right: 10px;
}

.search-bar input {
    background: transparent;
    border: none;
    color: var(--text-primary);
    width: 100%;
    outline: none;
    font-family: var(--font-main);
}

.btn-primary {
    background: var(--accent-color);
    color: white;
    border: none;
    padding: 10px 20px;
    border-radius: 10px;
    cursor: pointer;
    font-family: var(--font-main);
    font-weight: 500;
    display: flex;
    align-items: center;
    gap: 8px;
    transition: var(--transition-speed);
}

.btn-primary:hover {
    background: var(--accent-hover);
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(99, 102, 241, 0.3);
}

/* Kanban Board */
.board-container {
    flex: 1;
    padding: 2rem;
    overflow-x: auto;
    overflow-y: hidden;
}

.kanban-board {
    display: flex;
    gap: 2rem;
    height: 100%;
    min-width: fit-content;
}

.column {
    width: 350px;
    height: 100%;
    background: var(--column-bg);
    border-radius: 16px;
    display: flex;
    flex-direction: column;
    border: 1px solid var(--glass-border);
}

.column-header {
    padding: 1.5rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-bottom: 1px solid var(--glass-border);
}

.column-header h2 {
    font-size: 1.1rem;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 10px;
}

.column-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--accent-color);
}

.task-count {
    background: rgba(255, 255, 255, 0.1);
    padding: 4px 10px;
    border-radius: 20px;
    font-size: 0.85rem;
    color: var(--text-secondary);
}

.task-list {
    flex: 1;
    padding: 1.5rem;
    overflow-y: auto;
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

/* Scrollbar styling */
.task-list::-webkit-scrollbar {
    width: 6px;
}

.task-list::-webkit-scrollbar-thumb {
    background: rgba(255, 255, 255, 0.1);
    border-radius: 3px;
}

/* Task Card */
.task-card {
    background: var(--card-bg);
    padding: 1.25rem;
    border-radius: 12px;
    border: 1px solid var(--glass-border);
    cursor: grab;
    transition: var(--transition-speed);
    position: relative;
    user-select: none;
}

.task-card:hover {
    transform: translateY(-2px);
    background: rgba(40, 50, 75, 0.8);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.2);
    border-color: rgba(99, 102, 241, 0.3);
}

.task-card.dragging {
    opacity: 0.5;
    transform: scale(0.95);
    cursor: grabbing;
    background: var(--accent-color);
}

.task-tag {
    display: inline-block;
    padding: 4px 10px;
    border-radius: 6px;
    font-size: 0.75rem;
    font-weight: 500;
    margin-bottom: 10px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.tag-design {
    background: rgba(236, 72, 153, 0.2);
    color: #f472b6;
}

.tag-dev {
    background: rgba(99, 102, 241, 0.2);
    color: #818cf8;
}

.tag-research {
    background: rgba(245, 158, 11, 0.2);
    color: #fbbf24;
}

.tag-marketing {
    background: rgba(16, 185, 129, 0.2);
    color: #34d399;
}

.task-title {
    font-size: 1rem;
    font-weight: 500;
    margin-bottom: 8px;
    line-height: 1.4;
}

.task-desc {
    font-size: 0.85rem;
    color: var(--text-secondary);
    margin-bottom: 1rem;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.task-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-top: 1px solid rgba(255, 255, 255, 0.05);
    padding-top: 12px;
    font-size: 0.8rem;
    color: var(--text-secondary);
}

.task-members {
    display: flex;
    padding-left: 8px;
}

.member-avatar {
    width: 24px;
    height: 24px;
    border-radius: 50%;
    border: 2px solid var(--bg-color);
    margin-left: -8px;
}

/* Modal */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.6);
    backdrop-filter: blur(4px);
    display: flex;
    justify-content: center;
    align-items: center;
    opacity: 0;
    pointer-events: none;
    transition: var(--transition-speed);
    z-index: 100;
}

.modal-overlay.active {
    opacity: 1;
    pointer-events: all;
}

.modal {
    width: 100%;
    max-width: 500px;
    background: #1e293b;
    border-radius: 16px;
    padding: 24px;
    transform: translateY(20px);
    transition: var(--transition-speed);
}

.modal-overlay.active .modal {
    transform: translateY(0);
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 24px;
}

.modal-header h2 {
    font-size: 1.25rem;
}

.close-modal {
    background: transparent;
    border: none;
    color: var(--text-secondary);
    cursor: pointer;
    font-size: 1.5rem;
    transition: 0.2s;
}

.close-modal:hover {
    color: var(--text-primary);
}

.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.form-group input,
.form-group textarea,
.form-group select {
    width: 100%;
    padding: 12px;
    background: rgba(0, 0, 0, 0.2);
    border: 1px solid var(--glass-border);
    border-radius: 8px;
    color: var(--text-primary);
    font-family: var(--font-main);
    outline: none;
    transition: 0.2s;
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
    border-color: var(--accent-color);
}

.modal-actions {
    display: flex;
    justify-content: flex-end;
    gap: 12px;
    margin-top: 32px;
}

.btn-secondary {
    background: transparent;
    border: 1px solid var(--glass-border);
    color: var(--text-secondary);
    padding: 10px 20px;
    border-radius: 10px;
    cursor: pointer;
    font-family: var(--font-main);
    transition: 0.2s;
}

.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.05);
    color: var(--text-primary);
}