:root {
    --bg-app: #f4f6f8;
    --bg-panel: #FFFFFF;
    --border-light: #e0e4e8; /* Lighter, more modern border than BBBFBF */
    --border-main: #BBBFBF;
    --border-dark: #878787;
    
    --accent: #05AD98;
    --accent-hover: #048C7B;
    --accent-light: rgba(5, 173, 152, 0.12);
    
    --text-main: #1e293b; /* Modern slate text */
    --text-muted: #64748b; /* readable gray */
    --danger: #e74c3c;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Inter', system-ui, -apple-system, sans-serif;
}

body.light-theme {
    background-color: var(--bg-app);
    color: var(--text-main);
}

/* Utilities */
.panel {
    background: var(--bg-panel);
    border: 1px solid var(--border-light);
    border-radius: 16px; /* slightly rounder, modern feel */
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.02); /* very soft shadow */
}

.panel-inner {
    background: var(--bg-app);
    border: 1px solid var(--border-light);
    border-radius: 12px;
    padding: 20px;
}

.accent-text {
    color: var(--accent);
    font-weight: 600;
}

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

/* Sidebar */
.sidebar {
    width: 260px;
    flex-shrink: 0;
    display: flex;
    flex-direction: column;
    padding: 30px 0;
    border-radius: 0;
    border: none;
    border-right: 1px solid var(--border-light);
    background: var(--bg-panel);
    z-index: 10;
}

.sidebar-header {
    padding: 0 24px;
    margin-bottom: 40px;
}
.sidebar-header .logo {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 22px;
    font-weight: 800;
    letter-spacing: -0.5px;
    color: var(--text-main);
}
.sidebar-header .logo i {
    font-size: 28px;
    color: var(--accent);
}

.nav-links {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 4px;
    padding: 0 16px;
}

.nav-links li {
    padding: 12px 16px;
    border-radius: 10px;
    cursor: pointer;
    transition: all 0.2s ease;
    display: flex;
    align-items: center;
    gap: 12px;
    font-weight: 500;
    font-size: 15px;
    color: var(--text-muted);
}

.nav-links li i {
    font-size: 20px;
}

.nav-links li:hover {
    background: rgba(0,0,0,0.02);
    color: var(--text-main);
}

.nav-links li.active {
    background: var(--accent-light);
    color: var(--accent);
    font-weight: 600;
}

/* Main Content */
.main-content {
    flex-grow: 1;
    display: flex;
    flex-direction: column;
    min-width: 0;
    height: 100vh;
}

.topbar {
    height: 80px;
    flex-shrink: 0;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 32px;
    border-bottom: 1px solid var(--border-light);
    border-radius: 0;
    border-left: none;
    border-top: none;
    border-right: none;
    box-shadow: none;
}

/* Updated Search Bar to fix UI bugs */
.search-bar {
    display: flex;
    align-items: center;
    gap: 10px;
    background: var(--bg-app);
    padding: 12px 20px;
    border-radius: 30px; /* Pill shape */
    border: 1px solid transparent;
    transition: all 0.3s ease;
    min-width: 300px;
}
.search-bar:focus-within {
    background: var(--bg-panel);
    border-color: var(--accent);
    box-shadow: 0 0 0 4px var(--accent-light);
}
.search-bar input {
    background: transparent;
    border: none;
    outline: none;
    color: var(--text-main);
    width: 100%;
    font-size: 15px;
}
.search-bar input::placeholder {
    color: var(--text-muted);
}
.search-bar i {
    color: var(--text-muted);
    font-size: 20px;
    transition: color 0.3s;
}
.search-bar:focus-within i {
    color: var(--accent);
}

.user-info {
    display: flex;
    align-items: center;
    gap: 14px;
    font-weight: 600;
    font-size: 15px;
}
.status-indicator {
    width: 8px; height: 8px;
    border-radius: 50%;
    background: var(--accent);
}
.user-info img {
    width: 44px; height: 44px; border-radius: 50%;
    border: 2px solid var(--bg-app);
}

/* Sections */
.sections-wrapper {
    flex-grow: 1;
    overflow-y: auto;
    overflow-x: hidden;
    padding: 32px;
}
.section {
    display: none;
    animation: fadeUp 0.3s ease forwards;
}
@keyframes fadeUp {
    from { opacity: 0; transform: translateY(5px); }
    to { opacity: 1; transform: translateY(0); }
}

.section.active {
    display: block;
}

.section-title {
    font-size: 22px;
    font-weight: 700;
    margin-bottom: 24px;
    color: var(--text-main);
}

.section-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 24px;
}
.section-header .section-title {
    margin-bottom: 0;
}

/* Dashboard Stats */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 24px;
}

.stat-card {
    padding: 24px;
    display: flex;
    align-items: center;
    gap: 20px;
    border-left: 5px solid var(--accent); 
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}
.stat-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.04);
}
.stat-card i {
    font-size: 44px;
    color: var(--accent);
    padding: 10px;
    background: var(--accent-light);
    border-radius: 12px;
}
.stat-card h3 {
    font-size: 14px; color: var(--text-muted); margin-bottom: 8px; font-weight: 500;
}
.stat-card p {
    font-size: 26px; font-weight: 800; color: var(--text-main); letter-spacing: -0.5px;
}

/* Forms & Tables */
.table-container {
    padding: 0; /* Removing padding makes table flush edge to edge modern style */
    overflow-x: auto;
    border-radius: 12px;
    border: 1px solid var(--border-light);
}
table {
    width: 100%;
    border-collapse: collapse;
}
th, td {
    padding: 18px 24px;
    text-align: left;
    border-bottom: 1px solid var(--border-light);
    font-size: 14.5px;
}
th {
    color: var(--text-muted);
    font-weight: 600;
    text-transform: uppercase;
    font-size: 12px;
    letter-spacing: 0.5px;
    background: #fafbfc;
}
tbody tr {
    transition: background-color 0.15s;
}
tbody tr:hover {
    background: #fcfcfc;
}

.btn {
    padding: 10px 20px;
    border-radius: 8px;
    border: none;
    font-weight: 600;
    font-size: 14.5px;
    cursor: pointer;
    transition: all 0.2s;
    display: inline-flex;
    align-items: center;
    gap: 8px;
}
.btn-primary {
    background: var(--accent);
    color: #fff;
    box-shadow: 0 4px 10px rgba(5, 173, 152, 0.2);
}
.btn-primary:hover {
    background: var(--accent-hover);
    transform: translateY(-1px);
    box-shadow: 0 6px 15px rgba(5, 173, 152, 0.25);
}

.btn-secondary { background: #fff; color: var(--text-main); border: 1px solid var(--border-main); }
.btn-secondary:hover { background: #f8f9fa; border-color: var(--border-dark); }

.btn-danger { color: #fff; background: var(--danger); }

/* Modals */
.modal-backdrop {
    position: fixed; inset: 0;
    background: rgba(15, 23, 42, 0.4); 
    display: flex; align-items: center; justify-content: center;
    z-index: 1000;
    opacity: 0; pointer-events: none; transition: opacity 0.2s;
}
.modal-backdrop.show {
    opacity: 1; pointer-events: auto;
}
.modal {
    width: 480px;
    padding: 30px;
    max-height: 90vh;
    overflow-y: auto;
    border: none;
    box-shadow: 0 20px 50px rgba(0,0,0,0.1);
}
.modal.modal-lg { width: 750px; }

.modal-header {
    display: flex; justify-content: space-between; align-items: center; margin-bottom: 24px;
}
.modal-header h2 {
    font-size: 20px;
    font-weight: 700;
}
.close-modal { font-size: 28px; cursor: pointer; color: var(--text-muted); transition: color 0.2s; }
.close-modal:hover { color: var(--text-main); }

.form-group { margin-bottom: 18px; }
.form-row { display: flex; gap: 18px; margin-bottom: 18px; }
.form-row .col { flex: 1; }

label { display: block; margin-bottom: 8px; font-size: 14px; color: var(--text-main); font-weight: 600; }
input, select, textarea {
    width: 100%; padding: 14px 16px;
    background: #fff;
    border: 1px solid var(--border-main);
    border-radius: 10px; color: var(--text-main);
    outline: none; transition: all 0.2s;
    font-size: 15px;
}
input:focus, select:focus, textarea:focus {
    border-color: var(--accent);
    box-shadow: 0 0 0 4px var(--accent-light);
}

.settings-form {
    padding: 30px;
    max-width: 600px;
}

/* Custom Scrollbar - Modern Minimal */
::-webkit-scrollbar { width: 6px; height: 6px;}
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--border-main); border-radius: 10px; }
::-webkit-scrollbar-thumb:hover { background: var(--border-dark); }

.calc-row { display: flex; justify-content: space-between; margin-bottom: 10px; font-size: 15px;}
.calc-box hr { border: 0; border-top: 1px solid var(--border-light); margin: 16px 0; }
.calc-box h4 { margin-bottom: 16px; color: var(--text-main); font-size: 16px; }

.badge {
    padding: 6px 10px; border-radius: 6px; font-size: 13px; font-weight: 600; display: inline-block;
}
.badge-available { background: var(--accent-light); color: var(--accent); }
.badge-maintenance { background: #fdf2f2; color: var(--danger); box-shadow: inset 0 0 0 1px rgba(231,76,60,0.2); }

/* Calendar overrides */
.fc { background: var(--bg-panel); padding: 24px; border-radius: 16px; border: 1px solid var(--border-light); }
.fc-theme-standard td, .fc-theme-standard th { border-color: var(--border-light); }
.fc .fc-toolbar-title { font-size: 1.3em; color: var(--text-main); font-weight: 700;}
.fc .fc-button-primary { 
    background-color: var(--bg-app) !important; 
    border-color: var(--border-light) !important; 
    color: var(--text-main) !important;
    text-transform: capitalize;
    font-weight: 500;
}
.fc .fc-button-primary:hover { background-color: var(--border-light) !important; }
.fc .fc-button-primary.fc-button-active { background-color: var(--accent) !important; border-color: var(--accent) !important; color: #fff !important;}
.fc-event { border: none; padding: 4px 6px; border-radius: 4px; font-weight: 500; cursor: pointer; }
.fc-day-today { background: rgba(5, 173, 152, 0.05) !important; }