@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&display=swap');

:root {
    --primary-color: #0d6efd;
    --primary-hover: #0b5ed7;
    --secondary-color: #f8f9fa;
    --text-main: #2b3440;
    --text-muted: #6c757d;
    --border-color: #e9ecef;
    --bg-main: #f4f6f9;
    --card-bg: #ffffff;
    --radius-sm: 6px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --shadow-sm: 0 2px 4px rgba(0,0,0,0.04);
    --shadow-md: 0 4px 12px rgba(0,0,0,0.08);
    --shadow-lg: 0 10px 30px rgba(0,0,0,0.1);
    --glass-bg: rgba(255, 255, 255, 0.85);
}

body {
    font-family: 'Inter', sans-serif;
    background-color: var(--bg-main);
    color: var(--text-main);
    -webkit-font-smoothing: antialiased;
    letter-spacing: -0.01em;
}

/* =========================================================================
   Navbar (Glassmorphism)
   ========================================================================= */
.navbar-custom {
    background: var(--glass-bg) !important;
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.3) !important;
    box-shadow: var(--shadow-sm);
    padding: 10px 0;
    transition: all 0.3s ease;
}

.navbar-custom:hover {
    background: var(--card-bg) !important;
}

.navbar-top-links > li > a {
    color: var(--text-main) !important;
    font-weight: 600;
    letter-spacing: -0.02em;
    display: flex;
    align-items: center;
    gap: 12px;
}

.navbar-top-links img {
    width: 100px;
    height: auto;
    object-fit: contain;
    transition: transform 0.2s ease;
}

.navbar-top-links img:hover {
    transform: scale(1.05);
}

/* =========================================================================
   Container & Calendar Wrapper
   ========================================================================= */
.container {
    max-width: 1400px;
}

#calendar {
    background: var(--card-bg);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    padding: 24px;
    margin-top: 80px; /* Space for the navbar */
    margin-bottom: 30px;
    border: 1px solid var(--border-color);
}

/* =========================================================================
   FullCalendar Overrides
   ========================================================================= */
.fc-toolbar h2 {
    font-family: 'Inter', sans-serif;
    font-weight: 700;
    font-size: 1.5rem;
    color: var(--text-main);
    text-transform: capitalize;
}

.fc-button {
    background: var(--secondary-color) !important;
    border: 1px solid var(--border-color) !important;
    color: var(--text-main) !important;
    font-family: 'Inter', sans-serif;
    font-weight: 500 !important;
    border-radius: var(--radius-sm) !important;
    text-shadow: none !important;
    box-shadow: none !important;
    transition: all 0.2s ease !important;
    padding: 6px 14px !important;
    height: auto !important;
}

.fc-button:hover {
    background: #e2e6ea !important;
    color: #000 !important;
}

.fc-state-active, .fc-state-down {
    background: var(--primary-color) !important;
    color: white !important;
    border-color: var(--primary-hover) !important;
    box-shadow: inset 0 2px 4px rgba(0,0,0,0.15) !important;
}

.fc th {
    padding: 12px 0 !important;
    background: #f8fafc;
    color: var(--text-muted);
    font-weight: 600;
    text-transform: uppercase;
    font-size: 0.8rem;
    letter-spacing: 0.05em;
    border-color: var(--border-color) !important;
}

.fc-day-grid-event {
    border-radius: 4px;
    padding: 3px 6px;
    margin: 2px 4px;
    border: none !important;
    box-shadow: 0 1px 3px rgba(0,0,0,0.1);
    font-weight: 500;
    font-size: 0.85rem;
    transition: transform 0.15s ease, box-shadow 0.15s ease;
}

.fc-day-grid-event:hover {
    transform: translateY(-1px);
    box-shadow: 0 4px 8px rgba(0,0,0,0.15);
    z-index: 10 !important;
}

.fc-event .fc-title {
    font-weight: 600;
}

.fc td, .fc th {
    border-color: var(--border-color) !important;
}

.fc-today {
    background: #eef2ff !important; /* Soft active day indicator */
}

/* =========================================================================
   Modals
   ========================================================================= */
.modal-content {
    border: none;
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-lg);
    overflow: hidden;
}

.modal-header {
    background: var(--card-bg);
    border-bottom: 1px solid var(--border-color);
    padding: 20px 24px;
}

.modal-title {
    font-weight: 700;
    font-size: 1.25rem;
    color: var(--text-main);
}

.modal-body {
    padding: 24px;
    background: #fcfcfd;
}

.modal-footer {
    border-top: 1px solid var(--border-color);
    padding: 16px 24px;
    background: var(--card-bg);
}

/* =========================================================================
   Forms & Inputs
   ========================================================================= */
.form-group {
    margin-bottom: 20px;
}

.control-label {
    font-weight: 600;
    font-size: 0.9rem;
    color: var(--text-muted);
    margin-bottom: 8px;
    text-align: left !important;
    padding-top: 0 !important;
}

.form-control {
    border-radius: var(--radius-sm);
    border: 1px solid var(--border-color);
    padding: 10px 14px;
    font-size: 0.95rem;
    color: var(--text-main);
    background-color: var(--card-bg);
    box-shadow: none !important;
    transition: border-color 0.2s ease, box-shadow 0.2s ease;
    height: auto;
}

.form-control:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(13, 110, 253, 0.15) !important;
}

.form-control[readonly] {
    background-color: #f1f3f5;
    color: var(--text-muted);
    cursor: not-allowed;
}

select.form-control {
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%236c757d' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 12px center;
    background-size: 16px;
    padding-right: 40px;
}

/* =========================================================================
   Buttons
   ========================================================================= */
.btn {
    font-weight: 500;
    border-radius: var(--radius-sm);
    padding: 8px 18px;
    transition: all 0.2s ease;
    border: none;
}

.btn-primary {
    background: var(--primary-color);
    color: white;
    box-shadow: 0 2px 4px rgba(13, 110, 253, 0.3);
}

.btn-primary:hover {
    background: var(--primary-hover);
    box-shadow: 0 4px 8px rgba(13, 110, 253, 0.4);
    transform: translateY(-1px);
}

.btn-default {
    background: #e9ecef;
    color: var(--text-main);
}

.btn-default:hover {
    background: #dee2e6;
    color: #000;
}

.btn-danger {
    background: #dc3545;
    box-shadow: 0 2px 4px rgba(220, 53, 69, 0.3);
}

.btn-danger:hover {
    background: #c82333;
    box-shadow: 0 4px 8px rgba(220, 53, 69, 0.4);
}

.checkbox label.text-danger {
    font-weight: 600;
    color: #dc3545;
    display: flex;
    align-items: center;
    gap: 8px;
    cursor: pointer;
}

.checkbox label.text-danger input {
    margin: 0;
    position: relative;
}