:root {
    --bg-color: #0f1115;
    --glass-bg: rgba(255, 255, 255, 0.03);
    --glass-border: rgba(255, 255, 255, 0.05);
    --text-primary: #e2e8f0;
    --text-secondary: #94a3b8;
    --accent: #6366f1;
    --primary-color: #6366f1;
    --accent-hover: #4f46e5;
    --danger: #ef4444;
    --success: #22c55e;
    --warning: #f59e0b;
    --col-bg: rgba(0, 0, 0, 0.2);
    --card-bg: rgba(30, 33, 40, 0.8);
    --font-family: 'Inter', sans-serif;
    color-scheme: dark;
}

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

body.dark-mode {
    background-color: var(--bg-color);
    background-image: 
        radial-gradient(at 0% 0%, rgba(99, 102, 241, 0.15) 0px, transparent 50%),
        radial-gradient(at 100% 100%, rgba(239, 68, 68, 0.1) 0px, transparent 50%);
    background-attachment: fixed;
    color: var(--text-primary);
    font-family: var(--font-family);
    min-height: 100vh;
    overflow-x: hidden;
}

body.dark-mode.theme-ocean {
    --bg-color: #0b1120;
    --card-bg: rgba(15, 23, 42, 0.8);
    --glass-bg: rgba(14, 165, 233, 0.05);
    --glass-border: rgba(14, 165, 233, 0.1);
    --accent: #0ea5e9;
    --primary-color: #0ea5e9;
    --accent-hover: #0284c7;
    background-image: 
        radial-gradient(at 0% 0%, rgba(14, 165, 233, 0.15) 0px, transparent 50%),
        radial-gradient(at 100% 100%, rgba(16, 185, 129, 0.1) 0px, transparent 50%);
}

body.dark-mode.theme-forest {
    --bg-color: #0a1f16;
    --card-bg: rgba(10, 31, 22, 0.8);
    --glass-bg: rgba(16, 185, 129, 0.05);
    --glass-border: rgba(16, 185, 129, 0.1);
    --accent: #10b981;
    --primary-color: #10b981;
    --accent-hover: #059669;
    background-image: 
        radial-gradient(at 0% 0%, rgba(16, 185, 129, 0.2) 0px, transparent 50%),
        radial-gradient(at 100% 100%, rgba(14, 165, 233, 0.1) 0px, transparent 50%);
}

body.dark-mode.theme-sunset {
    --bg-color: #1a0f0f;
    --card-bg: rgba(30, 15, 15, 0.8);
    --glass-bg: rgba(249, 115, 22, 0.05);
    --glass-border: rgba(249, 115, 22, 0.1);
    --accent: #f97316;
    --primary-color: #f97316;
    --accent-hover: #ea580c;
    background-image: 
        radial-gradient(at 0% 0%, rgba(249, 115, 22, 0.15) 0px, transparent 50%),
        radial-gradient(at 100% 100%, rgba(225, 29, 72, 0.1) 0px, transparent 50%);
}

body.dark-mode.theme-mystic {
    --bg-color: #170c24;
    --card-bg: rgba(23, 12, 36, 0.8);
    --glass-bg: rgba(168, 85, 247, 0.05);
    --glass-border: rgba(168, 85, 247, 0.1);
    --accent: #a855f7;
    --primary-color: #a855f7;
    --accent-hover: #9333ea;
    background-image: 
        radial-gradient(at 0% 0%, rgba(168, 85, 247, 0.15) 0px, transparent 50%),
        radial-gradient(at 100% 100%, rgba(236, 72, 153, 0.1) 0px, transparent 50%);
}

body.dark-mode.theme-cyberpunk {
    --bg-color: #0d0e15;
    --card-bg: rgba(13, 14, 21, 0.8);
    --glass-bg: rgba(236, 72, 153, 0.05);
    --glass-border: rgba(236, 72, 153, 0.2);
    --accent: #ec4899;
    --primary-color: #ec4899;
    --accent-hover: #db2777;
    background-image: 
        radial-gradient(at 0% 0%, rgba(236, 72, 153, 0.2) 0px, transparent 50%),
        radial-gradient(at 100% 100%, rgba(6, 182, 212, 0.2) 0px, transparent 50%);
}

body.dark-mode.theme-aurora {
    --bg-color: #04151f;
    --card-bg: rgba(4, 21, 31, 0.8);
    --glass-bg: rgba(20, 184, 166, 0.05);
    --glass-border: rgba(20, 184, 166, 0.1);
    --accent: #14b8a6;
    --primary-color: #14b8a6;
    --accent-hover: #0d9488;
    background-image: 
        radial-gradient(at 0% 0%, rgba(20, 184, 166, 0.2) 0px, transparent 50%),
        radial-gradient(at 100% 100%, rgba(139, 92, 246, 0.1) 0px, transparent 50%);
}

body.dark-mode.theme-crimson {
    --bg-color: #1a0a0a;
    --card-bg: rgba(26, 10, 10, 0.8);
    --glass-bg: rgba(225, 29, 72, 0.05);
    --glass-border: rgba(225, 29, 72, 0.1);
    --accent: #e11d48;
    --primary-color: #e11d48;
    --accent-hover: #be123c;
    background-image: 
        radial-gradient(at 0% 0%, rgba(225, 29, 72, 0.2) 0px, transparent 50%),
        radial-gradient(at 100% 100%, rgba(0, 0, 0, 0.5) 0px, transparent 50%);
}

body.dark-mode.theme-oled {
    --bg-color: #000000;
    --card-bg: #000000;
    --glass-bg: rgba(255, 255, 255, 0.02);
    --glass-border: rgba(255, 255, 255, 0.1);
    --accent: #ffffff;
    --primary-color: #ffffff;
    --accent-hover: #cccccc;
    background-image: none;
    color: #ffffff;
}

.glass-container {
    max-width: 1600px;
    margin: 0 auto;
    padding: 20px;
    height: 100vh;
    display: flex;
    flex-direction: column;
}

/* Header */
.app-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 15px 30px;
    background: var(--glass-bg);
    backdrop-filter: blur(12px);
    border: 1px solid var(--glass-border);
    border-radius: 16px;
    margin-bottom: 20px;
    box-shadow: 0 4px 30px rgba(0, 0, 0, 0.1);
}

.logo h1 {
    font-size: 1.5rem;
    font-weight: 700;
    background: linear-gradient(to right, #6366f1, #a855f7);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.main-nav {
    display: flex;
    gap: 10px;
}

.nav-btn {
    background: transparent;
    border: none;
    color: var(--text-secondary);
    padding: 8px 16px;
    border-radius: 8px;
    cursor: pointer;
    font-family: var(--font-family);
    font-weight: 500;
    transition: all 0.3s ease;
}

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

.nav-btn.active {
    color: var(--text-primary);
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    box-shadow: 0 0 15px rgba(99, 102, 241, 0.2);
}

.btn-primary {
    background: var(--accent);
    color: var(--btn-text, white);
    border: none;
    padding: 10px 20px;
    border-radius: 8px;
    cursor: pointer;
    font-weight: 600;
    transition: all 0.2s ease;
    box-shadow: 0 4px 15px rgba(99, 102, 241, 0.3);
}

.btn-primary:hover {
    background: var(--accent-hover);
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(99, 102, 241, 0.4);
}

.hidden {
    display: none !important;
}

/* Kanban Board */
.kanban-board {
    display: flex;
    gap: 20px;
    height: calc(100vh - 180px);
    overflow-x: auto;
    padding-bottom: 20px;
}

.column {
    flex: 1;
    min-width: 320px;
    max-width: 400px;
    background: var(--col-bg);
    border-radius: 16px;
    display: flex;
    flex-direction: column;
    border: 1px solid var(--glass-border);
    backdrop-filter: blur(10px);
}

.column-header {
    padding: 15px 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-bottom: 1px solid var(--glass-border);
}

.column-header h3 {
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-primary);
}

.count {
    background: var(--glass-bg);
    padding: 2px 8px;
    border-radius: 12px;
    font-size: 0.8rem;
    color: var(--text-secondary);
}

.column-content {
    padding: 15px;
    flex: 1;
    overflow-y: auto;
    display: flex;
    flex-direction: column;
    gap: 15px;
}

/* Cards */
.task-card {
    background: var(--card-bg);
    border-radius: 12px;
    padding: 15px;
    cursor: grab;
    border: 1px solid var(--glass-border);
    transition: transform 0.2s, box-shadow 0.2s;
    position: relative;
    overflow: hidden;
}

.task-card:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 20px rgba(0,0,0,0.15);
    border-color: var(--accent);
}

.task-card.sortable-ghost {
    opacity: 0.4;
}

.task-card.blocked {
    border-color: var(--danger);
    background: linear-gradient(to right, rgba(239, 68, 68, 0.1), var(--card-bg));
}

.task-card.blocked::before {
    content: '';
    position: absolute;
    top: 0; left: 0; width: 4px; height: 100%;
    background: var(--danger);
    animation: pulse 1.5s infinite;
}

.task-title {
    font-size: 0.95rem;
    font-weight: 600;
    margin-bottom: 8px;
}

.task-meta {
    display: flex;
    justify-content: space-between;
    font-size: 0.8rem;
    color: var(--text-secondary);
    margin-top: 12px;
}

.story-points {
    background: rgba(99, 102, 241, 0.2);
    color: #a5b4fc;
    padding: 2px 6px;
    border-radius: 6px;
    font-weight: 600;
}

/* DHTMLX Gantt Premium Override */
.gantt_grid_scale, .gantt_task_scale {
    background-color: var(--glass-bg);
    color: var(--text-primary);
    border-bottom: 1px solid var(--glass-border);
}
.gantt_container {
    background-color: transparent !important;
}
.gantt_data_area, .gantt_grid_data, .gantt_task_bg, .gantt_layout_cell, .gantt_layout_root, .gantt_grid_resize_area {
    background-color: transparent !important;
}
.gantt_resizer {
    background-color: var(--glass-border) !important;
}
.gantt_task_row, .gantt_grid_row, .gantt_row {
    background-color: transparent !important;
    border-bottom: 1px solid var(--glass-border) !important;
    color: var(--text-primary) !important;
}
.gantt_grid_data .gantt_row.gantt_selected, .gantt_grid_data .gantt_row:hover {
    background-color: var(--glass-border) !important;
}
.gantt_task_line {
    background: linear-gradient(90deg, #6366f1 0%, #a855f7 100%) !important;
    border: none !important;
    border-radius: 4px;
    box-shadow: 0 2px 5px rgba(0,0,0,0.3);
}
.gantt_task_progress {
    background: rgba(255, 255, 255, 0.3) !important;
}
.gantt_cell {
    color: var(--text-primary) !important;
    border-right: 1px solid var(--glass-border) !important;
}
.gantt_task_cell {
    border-right: 1px solid var(--glass-border) !important;
}
.gantt_grid_head_cell {
    color: var(--text-primary) !important;
}
.gantt-container-wrapper {
    background: var(--card-bg);
    border-radius: 12px;
    padding: 0;
    border: 1px solid var(--glass-border);
    overflow: hidden;
}

@keyframes pulse {
    0% { opacity: 1; }
    50% { opacity: 0.5; }
    100% { opacity: 1; }
}

/* Scrollbar */
::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}
::-webkit-scrollbar-track {
    background: rgba(0,0,0,0.1);
    border-radius: 4px;
}
::-webkit-scrollbar-thumb {
    background: var(--scroll-thumb, rgba(255,255,255,0.2));
    border-radius: 4px;
}

/* Dashboard Styles */
.dashboard-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: 15px;
}
.tasks-grid {
    grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
}
.dash-card {
    background: var(--card-bg);
    border: 1px solid var(--glass-border);
    border-radius: 10px;
    padding: 12px 15px;
    cursor: pointer;
    transition: transform 0.2s, box-shadow 0.2s;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
}
.dash-card:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 15px rgba(0,0,0,0.3);
    border-color: rgba(255,255,255,0.2);
}

/* Gantt Today Marker */
.today-marker {
    background-color: var(--danger) !important;
    width: 2px !important;
    z-index: 9999 !important;
}
.today-marker .gantt_marker_content {
    background-color: var(--danger) !important;
    color: white !important;
    padding: 2px 5px !important;
    border-radius: 4px !important;
    font-size: 10px !important;
    margin-top: 0px !important;
    z-index: 10000 !important;
}
.dash-card h4 {
    margin: 0 0 6px 0;
    font-size: 0.95rem;
    color: var(--text-primary);
}
.dash-card p {
    margin: 0 0 10px 0;
    font-size: 0.8rem;
    color: var(--text-secondary);
    line-height: 1.3;
}
.dash-card .dash-meta {
    font-size: 0.75rem;
    color: var(--accent);
    font-weight: 600;
}
.task-delayed .gantt_task_content { background: #ef4444 !important; border: 1px solid #dc2626 !important; } .task-delayed .gantt_task_progress { background: #b91c1c !important; }