:root {
    --primary-color: #fa7921;
    --info-color: #0f82aa;
    --success-color: #10b981;
    --sidebar-width: 260px;
}

body {
    font-family: 'Sarabun', sans-serif;
    background-color: #f4f7f9;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

[data-bs-theme="dark"] body {
    background-color: #121212;
}

/* Custom Colors */
.text-primary-custom { color: var(--primary-color) !important; }
.bg-primary-custom {
    background-color: var(--primary-color) !important;
    color: #fff !important;
}
.text-info-custom { color: var(--info-color) !important; }
.bg-info-custom {
    background-color: var(--info-color) !important;
    color: #fff !important;
}
.text-info { color: var(--info-color) !important; }
.text-success-custom { color: var(--success-color) !important; }
.bg-success-custom {
    background-color: var(--success-color) !important;
    color: #fff !important;
}
.btn-primary-custom {
    background-color: var(--primary-color);
    border-color: var(--primary-color);
    color: #fff;
}
.btn-primary-custom:hover {
    background-color: rgba(250, 121, 33, 0.1);
    border-color: var(--primary-color);
    color: var(--primary-color);
}
.btn-info-custom {
    background-color: var(--info-color);
    border-color: var(--info-color);
    color: #fff;
}
.btn-info-custom:hover {
    background-color: rgba(33, 141, 250, 0.1);
    border-color: var(--info-color);
    color: var(--info-color);
}
.btn-success-custom {
    background-color: rgba(16, 185, 129, 0.1);
    border-color: var(--success-color);
    color: var(--success-color);
}
.btn-success-custom:hover {
    background-color: var(--success-color);
    border-color: var(--success-color);
}

/* Navbar Customization */
.navbar {
    background-color: #ffffff;
    border-bottom: 2px solid var(--primary-color);
}
[data-bs-theme="dark"] .navbar {
    background-color: #1e1e1e;
    border-bottom: 2px solid #333;
}

.logo-box {
/*    width: 35px;
    height: 35px;
    background: var(--primary-color);
    border-radius: 8px;
    font-weight: bold;
    font-size: 1.2rem;
    color: white;*/
    display: flex;
    align-items: center;
    justify-content: center;
}

/* Sidebar Nav Links */
.nav-link {
    font-weight: 400;
    color: #555;
    padding: 0.8rem 1rem;
    border-radius: 8px;
    transition: all 0.3s;
}
.nav-link:hover, .nav-link.active {
    background-color: rgba(250, 121, 33, 0.1);
    color: var(--primary-color);
}
[data-bs-theme="dark"] .nav-link { color: #ccc; }

/* Cards & Components */
.card {
    border: none;
    border-radius: 15px;
    transition: transform 0.2s;
}
.card-header {
    background: transparent;
    border-bottom: 1px solid rgba(0,0,0,0.05);
    font-weight: 600;
}

/* Theme Toggle Visibility */
[data-bs-theme="dark"] .d-none-dark { display: none !important; }
[data-bs-theme="light"] .d-none-light { display: none !important; }

/* Mobile Optimization */
@media (max-width: 768px) {
    .main-content { padding: 15px; }
    .nav-item { margin-bottom: 0.3rem; }
    .fc .fc-button { font-size: 0.7rem;  }
    .fc .fc-toolbar-title { font-size: 1rem !important;  }
}

/* ตกแต่ง Dropdown Menu */
.dropdown-menu {
    border-radius: 12px;
    padding: 0.5rem;
    animation: fadeIn 0.2s ease-out;
}

.dropdown-item {
    border-radius: 8px;
    padding: 0.6rem 1rem;
    transition: all 0.2s;
    font-size: 0.95rem;
    margin-bottom: 0.3rem;
}
.dropdown-item.active{
    background-color: rgba(250, 121, 33, 0.2); /* สีส้มเข้มขึ้นเล็กน้อยเมื่อคลิก */
    color: #555555;
}
.dropdown-item:hover {
    background-color: rgba(250, 121, 33, 0.1); /* สีส้มจางๆ */
    color: var(--primary-color);
}

.dropdown-item i {
    color: #6c757d;
}
.nav-item {
    margin-left: 0.3rem;
}

.dropdown-item:hover i {
    color: var(--primary-color);
}

.dropdown-header {
    text-transform: uppercase;
    font-size: 0.75rem;
    font-weight: 700;
    color: #adb5bd;
    letter-spacing: 0.5px;
    padding-top: 0.8rem;
}

/* Animation สำหรับ Dropdown */
@keyframes fadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

/* ปรับสี Dropdown Toggle เมื่อ Active */
.nav-link.active.dropdown-toggle {
    color: var(--primary-color) !important;
    font-weight: 600;
}

/* ปรับสไตล์ปฏิทินให้เข้ากับธีม */
.fc-event {
    cursor: pointer;
    border: none;
    padding: 2px 5px;
}

.fc-toolbar-title {
    font-size: 1.2rem !important;
    font-weight: bold;
}

.fc-button-primary {
    background-color: #fa7921 !important;
    border-color: #fa7921 !important;
}

.fc-button-active {
    background-color: #e0681a !important;
}

[data-bs-theme="dark"] .fc-theme-standard td,
[data-bs-theme="dark"] .fc-theme-standard th,
[data-bs-theme="dark"] .fc-theme-standard .fc-scrollgrid {
    border-color: #444;
}

/* ตกแต่งให้ Event ดูนุ่มนวลขึ้น */
.fc-v-event,
.fc-h-event {
    border-radius: 6px !important;
    border: none !important;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
    padding: 1px 4px;
}

/* ปรับสีตัวอักษรใน Event */
.fc-event-title {
    font-weight: 500;
    font-size: 0.85rem;
}

/* เมื่อเอาเมาส์ไปชี้ให้เข้มขึ้นเล็กน้อย */
.fc-event:hover {
    opacity: 0.9;
    filter: brightness(90%);
}

/* ตกแต่ง Background Event ให้ดูโปร่งแสง (Translucent) */
.fc-event-background {
    opacity: 0.3;
    /* ปรับค่าความจางของสีพื้นหลัง */
    filter: saturate(1.5);
}

/* หากเป็นโหมด Mobile ให้พื้นหลังมีลวดลายเล็กน้อยเพื่อให้แยกแยะได้ */
.fc-daygrid-bg-event {
    background-image: linear-gradient(45deg, rgba(255, 255, 255, .05) 25%, transparent 25%, transparent 50%, rgba(255, 255, 255, .05) 50%, rgba(255, 255, 255, .05) 75%, transparent 75%, transparent);
    background-size: 10px 10px;
}