/* Base Variables & Theme */
:root {
    --bg-main: #0F172A;
    /* Slate 900 */
    --bg-sidebar: #1E293B;
    /* Slate 800 */
    --bg-card: #1E293B;
    --bg-elevated: #334155;
    /* Slate 700 */

    --text-primary: #F8FAFC;
    /* Slate 50 */
    --text-secondary: #94A3B8;
    /* Slate 400 */

    --border: #334155;
    --border-light: #475569;

    --primary: #3B82F6;
    /* Blue 500 */
    --primary-hover: #2563EB;

    --danger: #EF4444;
    --warning: #F59E0B;
    --success: #10B981;
    --info: #0EA5E9;

    /* Severity Colors */
    --sev-1: #10B981;
    /* Green */
    --sev-2: #84CC16;
    /* Lime */
    --sev-3: #F59E0B;
    /* Amber */
    --sev-4: #F97316;
    /* Orange */
    --sev-5: #EF4444;
    /* Red */

    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;

    --font-ui: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    --font-mono: 'JetBrains Mono', ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
}

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

body {
    background-color: var(--bg-main);
    color: var(--text-primary);
    font-family: var(--font-ui);
    line-height: 1.5;
    -webkit-font-smoothing: antialiased;
}

/* Typography */
h1,
h2,
h3,
h4 {
    font-weight: 600;
    color: var(--text-primary);
}

.text-muted {
    color: var(--text-secondary);
}

.text-sm {
    font-size: 0.875rem;
}

.text-danger {
    color: var(--danger);
}

.mb-2 {
    margin-bottom: 0.5rem;
}

.mb-4 {
    margin-bottom: 1rem;
}

.mt-2 {
    margin-top: 0.5rem;
}

.mt-4 {
    margin-top: 1rem;
}

.pt-4 {
    padding-top: 1rem;
}

.border-top {
    border-top: 1px solid var(--border);
}

.w-full {
    width: 100%;
}

.flex-1 {
    flex: 1;
}

.text-center {
    text-align: center;
}

.hidden {
    display: none !important;
}

/* App Layout */
.app-container {
    display: flex;
    height: 100vh;
    overflow: hidden;
}

/* Sidebar */
.sidebar {
    width: 260px;
    background-color: var(--bg-sidebar);
    border-right: 1px solid var(--border);
    display: flex;
    flex-direction: column;
    flex-shrink: 0;
}

.brand {
    padding: 1.5rem;
    display: flex;
    align-items: center;
    gap: 0.75rem;
    border-bottom: 1px solid var(--border);
}

.brand-icon {
    width: 32px;
    height: 32px;
    background: var(--primary);
    color: white;
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: bold;
    font-size: 1.2rem;
    font-family: var(--font-mono);
}

.brand h1 {
    font-size: 1.1rem;
    letter-spacing: -0.01em;
}

.nav-menu {
    flex: 1;
    padding: 1.5rem 0.75rem;
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
}

.nav-item {
    padding: 0.75rem 1rem;
    color: var(--text-secondary);
    text-decoration: none;
    border-radius: var(--radius-md);
    font-weight: 500;
    transition: all 0.2s;
}

.nav-item:hover {
    background-color: var(--bg-elevated);
    color: var(--text-primary);
}

.nav-item.active {
    background-color: rgba(59, 130, 246, 0.1);
    color: var(--primary);
}

.sidebar-bottom {
    padding: 1.5rem;
    border-top: 1px solid var(--border);
}

/* Main Content */
.content-area {
    flex: 1;
    overflow-y: auto;
    padding: 2rem;
    background-color: var(--bg-main);
}

.view-section {
    display: none;
    animation: fadeIn 0.3s ease;
}

.view-section.active {
    display: block;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(5px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.page-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 2rem;
    flex-wrap: wrap;
    gap: 1rem;
}

.header-actions {
    display: flex;
    gap: 1rem;
    align-items: center;
}

/* Cards & Stats */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 1.5rem;
    margin-bottom: 2rem;
}

.card,
.stat-card {
    background-color: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 1.5rem;
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
}

.stat-card h3 {
    font-size: 0.875rem;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: 0.5rem;
}

.stat-value {
    font-size: 2.5rem;
    font-weight: 700;
    font-family: var(--font-mono);
    color: var(--text-primary);
    line-height: 1;
    margin-bottom: 0.5rem;
}

.stat-desc {
    font-size: 0.875rem;
    color: var(--text-secondary);
}

/* Progress Ring */
.progress-ring-container {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 0.5rem;
}

.progress-text {
    font-size: 1.5rem;
    font-weight: 700;
    font-family: var(--font-mono);
}

.progress-ring__circle {
    transition: stroke-dashoffset 0.5s ease-in-out;
    transform: rotate(-90deg);
    transform-origin: 50% 50%;
}

/* Buttons & Inputs */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.5rem 1rem;
    border-radius: var(--radius-sm);
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s;
    border: 1px solid transparent;
    font-family: var(--font-ui);
    font-size: 0.875rem;
}

.btn-primary {
    background-color: var(--primary);
    color: white;
    border-color: var(--primary);
}

.btn-primary:hover {
    background-color: var(--primary-hover);
}

.btn-secondary {
    background-color: transparent;
    border-color: var(--border-light);
    color: var(--text-primary);
}

.btn-secondary:hover {
    background-color: var(--bg-elevated);
}

.btn-danger {
    background-color: rgba(239, 68, 68, 0.1);
    border-color: var(--danger);
    color: var(--danger);
}

.btn-danger:hover {
    background-color: var(--danger);
    color: white;
}

.btn-icon {
    background: none;
    border: none;
    color: var(--text-secondary);
    cursor: pointer;
    padding: 0.25rem;
    font-size: 1rem;
    transition: color 0.2s;
}

.btn-icon:hover {
    color: var(--text-primary);
}

.input-text,
.input-select,
.input-textarea {
    width: 100%;
    padding: 0.5rem 0.75rem;
    background-color: var(--bg-main);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-sm);
    color: var(--text-primary);
    font-family: var(--font-ui);
    font-size: 0.875rem;
    transition: border-color 0.2s;
}

.input-text:focus,
.input-select:focus,
.input-textarea:focus {
    outline: none;
    border-color: var(--primary);
}

.input-textarea {
    resize: vertical;
    min-height: 80px;
}

/* Form Groups */
.form-group {
    margin-bottom: 1.25rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 500;
    font-size: 0.875rem;
    color: var(--text-secondary);
}

.required {
    color: var(--danger);
}

.form-row {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
}

/* Range Slider */
.range-slider {
    width: 100%;
}

.input-range {
    width: 100%;
    margin: 0.5rem 0;
    cursor: pointer;
    accent-color: var(--primary);
}

.range-labels {
    display: flex;
    justify-content: space-between;
    font-size: 0.75rem;
    color: var(--text-secondary);
}

/* Toggle Checkbox */
.toggle-label {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    cursor: pointer;
    color: var(--text-primary);
    user-select: none;
}

.input-checkbox {
    width: 16px;
    height: 16px;
    cursor: pointer;
    accent-color: var(--primary);
}

/* Tables */
.table-responsive {
    overflow-x: auto;
}

.data-table {
    width: 100%;
    border-collapse: collapse;
    text-align: left;
}

.data-table th,
.data-table td {
    padding: 1rem;
    border-bottom: 1px solid var(--border);
}

.data-table th {
    font-weight: 500;
    color: var(--text-secondary);
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.data-table tbody tr {
    transition: background-color 0.2s;
}

.data-table tbody tr:hover {
    background-color: var(--bg-elevated);
}

.data-table td {
    font-size: 0.875rem;
}

.data-table .font-mono {
    font-family: var(--font-mono);
}

/* Badges */
.badge {
    display: inline-flex;
    align-items: center;
    padding: 0.125rem 0.5rem;
    border-radius: 9999px;
    font-size: 0.75rem;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.badge-outline {
    border: 1px solid currentColor;
    background: transparent;
}

.sev-1 {
    color: var(--sev-1);
    border-color: var(--sev-1);
}

.sev-2 {
    color: var(--sev-2);
    border-color: var(--sev-2);
}

.sev-3 {
    color: var(--sev-3);
    border-color: var(--sev-3);
}

.sev-4 {
    color: var(--sev-4);
    border-color: var(--sev-4);
}

.sev-5 {
    color: var(--sev-5);
    border-color: var(--sev-5);
    background-color: rgba(239, 68, 68, 0.1);
}

/* Modals */
.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: rgba(15, 23, 42, 0.8);
    backdrop-filter: blur(4px);
    z-index: 50;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: opacity 0.2s;
}

.modal.active {
    display: flex;
    opacity: 1;
}

.modal-content {
    background-color: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    width: 100%;
    max-width: 600px;
    max-height: 90vh;
    display: flex;
    flex-direction: column;
    box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.5);
    transform: scale(0.95);
    transition: transform 0.2s;
}

.modal.active .modal-content {
    transform: scale(1);
}

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

.modal-body {
    padding: 1.5rem;
    overflow-y: auto;
}

.modal-footer {
    padding: 1.5rem;
    border-top: 1px solid var(--border);
    display: flex;
    justify-content: flex-end;
    gap: 1rem;
}

/* Matrix Chart */
.matrix-container {
    height: 600px;
    position: relative;
    padding: 2rem;
    display: flex;
    flex-direction: column;
}

.matrix-grid {
    flex: 1;
    position: relative;
    border: 2px solid var(--border-light);
    background:
        linear-gradient(to right, transparent 49.8%, var(--border-light) 49.8%, var(--border-light) 50.2%, transparent 50.2%),
        linear-gradient(to bottom, transparent 49.8%, var(--border-light) 49.8%, var(--border-light) 50.2%, transparent 50.2%);
    border-radius: var(--radius-md);
    overflow: hidden;
}

.quadrant {
    position: absolute;
    width: 50%;
    height: 50%;
    padding: 1rem;
    color: var(--text-secondary);
    display: flex;
    opacity: 0.5;
    pointer-events: none;
}

.q-top-left {
    top: 0;
    left: 0;
    background-color: rgba(16, 185, 129, 0.05);
    align-items: flex-start;
    justify-content: flex-start;
    border-right: 1px dashed var(--border);
    border-bottom: 1px dashed var(--border);
}

.q-top-right {
    top: 0;
    right: 0;
    background-color: rgba(245, 158, 11, 0.05);
    align-items: flex-start;
    justify-content: flex-end;
    text-align: right;
    border-bottom: 1px dashed var(--border);
}

.q-bottom-left {
    bottom: 0;
    left: 0;
    background-color: rgba(59, 130, 246, 0.05);
    align-items: flex-end;
    justify-content: flex-start;
    border-right: 1px dashed var(--border);
}

.q-bottom-right {
    bottom: 0;
    right: 0;
    background-color: rgba(239, 68, 68, 0.05);
    align-items: flex-end;
    justify-content: flex-end;
    text-align: right;
}

.q-label {
    font-size: 1rem;
    font-weight: 600;
    line-height: 1.2;
}

.q-label small {
    font-weight: 400;
    font-size: 0.75rem;
}

.axis-y-label {
    position: absolute;
    left: -2rem;
    top: 50%;
    transform: translateY(-50%) rotate(-90deg);
    color: var(--text-secondary);
    font-size: 0.875rem;
    letter-spacing: 0.1em;
    text-transform: uppercase;
}

.axis-x-label {
    position: absolute;
    bottom: -2rem;
    left: 50%;
    transform: translateX(-50%);
    color: var(--text-secondary);
    font-size: 0.875rem;
    letter-spacing: 0.1em;
    text-transform: uppercase;
}

.matrix-dots {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
}

.matrix-dot {
    position: absolute;
    width: 16px;
    height: 16px;
    background-color: var(--primary);
    border-radius: 50%;
    transform: translate(-50%, -50%);
    cursor: pointer;
    pointer-events: auto;
    border: 2px solid var(--bg-card);
    transition: transform 0.2s, box-shadow 0.2s;
    box-shadow: 0 0 10px rgba(0, 0, 0, 0.5);
}

.matrix-dot:hover {
    transform: translate(-50%, -50%) scale(1.5);
    z-index: 10;
}

.matrix-dot .dot-tooltip {
    position: absolute;
    bottom: 100%;
    left: 50%;
    transform: translateX(-50%);
    background: var(--bg-elevated);
    padding: 0.5rem;
    border-radius: var(--radius-sm);
    font-size: 0.75rem;
    white-space: nowrap;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.2s;
    margin-bottom: 5px;
    color: var(--text-primary);
    z-index: 20;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.3);
}

.matrix-dot:hover .dot-tooltip {
    opacity: 1;
    pointer-events: auto;
}

/* Sprint Planning Layout */
.planning-layout {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.5rem;
}

.list-container {
    margin-top: 1rem;
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.list-item {
    background: var(--bg-main);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    padding: 1rem;
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
}

.list-item-content {
    flex: 1;
}

.list-item-title {
    font-weight: 600;
    margin-bottom: 0.25rem;
    font-size: 0.95rem;
}

.list-item-meta {
    font-size: 0.75rem;
    color: var(--text-secondary);
    display: flex;
    gap: 0.5rem;
    align-items: center;
}

/* Settings Grid */
.settings-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 1.5rem;
}

.btn-group-vertical {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.border-danger {
    border-color: rgba(239, 68, 68, 0.3);
}

/* Print Styles */
@media print {

    .hide-print,
    .sidebar {
        display: none !important;
    }

    .app-container {
        height: auto;
        display: block;
    }

    .content-area {
        padding: 0;
        background: white;
        color: black;
        overflow: visible;
    }

    .card,
    .matrix-grid {
        border: 1px solid #ccc;
        box-shadow: none;
        background: white;
        color: black;
    }

    body {
        background: white;
        color: black;
    }

    * {
        color: black !important;
    }

    .matrix-dot {
        border-color: black;
    }
}