/* Modern Dark Theme Variables */
:root {
    --bg-dark: #0f172a;
    /* Deep slate/navy background */
    --bg-card: #1e293b;
    /* Lighter slate for cards */
    --text-primary: #f1f5f9;
    /* Off-white text */
    --text-secondary: #94a3b8;
    /* Muted text */
    --brand-blue: #3b82f6;
    /* Primary Action */
    --brand-blue-hover: #2563eb;
    --danger: #ef4444;
    /* Overdue/Delete */
    --warning: #f59e0b;
    /* Due Soon */
    --success: #10b981;
    /* Good status */
    --border-color: #334155;
    --radius: 12px;
    --shadow: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
}

* {
    box-sizing: border-box;
}

body {
    margin: 0;
    font-family: 'Inter', system-ui, sans-serif;
    background-color: var(--bg-dark);
    color: var(--text-primary);
    display: flex;
    min-height: 100vh;
}

/* Auth Layout */
body.auth-page {
    justify-content: center;
    align-items: center;
    flex-direction: column;
}

/* Sidebar */
.sidebar {
    width: 250px;
    background-color: var(--bg-card);
    border-right: 1px solid var(--border-color);
    padding: 20px;
    display: flex;
    flex-direction: column;
    position: fixed;
    height: 100%;
}

.logo {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--brand-blue);
    margin-bottom: 40px;
    display: flex;
    align-items: center;
    gap: 10px;
}

.nav-links {
    list-style: none;
    padding: 0;
    margin: 0;
    flex-grow: 1;
}

.nav-links li {
    margin-bottom: 10px;
}

.nav-links a {
    display: block;
    padding: 12px 16px;
    color: var(--text-secondary);
    text-decoration: none;
    border-radius: var(--radius);
    transition: all 0.2s;
}

.nav-links a:hover,
.nav-links a.active {
    background-color: rgb(59 130 246 / 0.1);
    color: var(--brand-blue);
}

.user-profile {
    margin-top: auto;
    padding-top: 20px;
    border-top: 1px solid var(--border-color);
}

/* Main Content */
.main-content {
    flex-grow: 1;
    margin-left: 250px;
    padding: 40px;
}

h1,
h2,
h3 {
    margin-top: 0;
}

.header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 30px;
}

/* Cards */
.card {
    background: var(--bg-card);
    border-radius: var(--radius);
    padding: 20px;
    box-shadow: var(--shadow);
    border: 1px solid var(--border-color);
}

.stat-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 20px;
    margin-bottom: 40px;
}

.stat-card h3 {
    font-size: 2rem;
    margin-bottom: 5px;
}

.stat-card p {
    color: var(--text-secondary);
    margin: 0;
}

/* Maintenance List */
.maintenance-list {
    display: grid;
    gap: 15px;
}

.m-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    background: rgb(15 23 42 / 0.5);
    /* Slightly darker inner card */
    padding: 15px;
    border-radius: 8px;
    border-left: 4px solid transparent;
}

.m-item.status-OVERDUE {
    border-left-color: var(--danger);
}

.m-item.status-DUE_SOON {
    border-left-color: var(--warning);
}

.m-info h4 {
    margin: 0 0 5px 0;
}

.m-info span {
    font-size: 0.85rem;
    color: var(--text-secondary);
}

/* Badges */
.badge {
    padding: 4px 8px;
    border-radius: 20px;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
}

.badge-overdue {
    background: rgb(239 68 68 / 0.2);
    color: var(--danger);
}

.badge-warning {
    background: rgb(245 158 11 / 0.2);
    color: var(--warning);
}

/* Forms */
.form-group {
    margin-bottom: 15px;
}

label {
    display: block;
    margin-bottom: 8px;
    color: var(--text-secondary);
}

input,
select,
textarea {
    width: 100%;
    padding: 12px;
    border-radius: var(--radius);
    border: 1px solid var(--border-color);
    background: var(--bg-dark);
    color: var(--text-primary);
    outline: none;
}

input:focus {
    border-color: var(--brand-blue);
}

.btn {
    padding: 12px 24px;
    border-radius: var(--radius);
    border: none;
    font-weight: 600;
    cursor: pointer;
    text-decoration: none;
    display: inline-block;
    transition: background 0.2s;
}

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

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

.btn-block {
    width: 100%;
    text-align: center;
}


.mobile-toggle {
    display: none;
    background: none;
    border: none;
    color: var(--text-primary);
    font-size: 1.5rem;
    cursor: pointer;
}

/* Responsive */
@media (max-width: 768px) {
    .sidebar {
        transform: translateX(-100%);
        z-index: 100;
        transition: transform 0.3s;
    }

    .sidebar.open {
        transform: translateX(0);
    }

    .main-content {
        margin-left: 0;
        padding: 20px;
    }

    .mobile-toggle {
        display: block !important;
    }
}

.schedule-select-card:hover {
    border-color: var(--brand-blue) !important;
}

.schedule-select-card:has(input:checked) {
    border-color: var(--brand-blue) !important;
    background: rgb(59 130 246 / 0.1) !important;
}