/* assets/css/style.css */

/* --- Import Font --- */
@import url('https://fonts.googleapis.com/css2?family=Kanit:wght@300;400;500;700&display=swap');

/* --- Global Variables --- */
:root {
    --primary-color: #005A9C; /* Deep Blue */
    --secondary-color: #007BFF; /* Bright Blue */
    --light-color: #f8f9fa;
    --dark-color: #343a40;
    --success-color: #28a745;
    --error-color: #dc3545;
    --grey-color: #6c757d;
    --background-color: #eef2f5;
    --card-background: #ffffff;
    --shadow: 0 4px 8px rgba(0,0,0,0.05);
    --border-radius: 8px;
}

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

body {
    font-family: 'Kanit', sans-serif;
    background-color: var(--background-color);
    color: var(--dark-color);
    line-height: 1.6;
}

.container {
    max-width: 1200px;
    margin: 20px auto;
    padding: 0 20px;
}

/* --- Navbar --- */
.navbar {
    background-color: var(--primary-color);
    color: var(--light-color);
    padding: 1rem 0;
    box-shadow: 0 2px 5px rgba(0,0,0,0.1);
}

.navbar .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-top: 0;
}

.navbar-brand {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--light-color);
    text-decoration: none;
}

.navbar-nav {
    list-style: none;
    display: flex;
    align-items: center;
}

.navbar-nav li a {
    color: var(--light-color);
    text-decoration: none;
    padding: 0.5rem 1rem;
    transition: background-color 0.3s;
    border-radius: var(--border-radius);
    display: flex;
    align-items: center;
}

.navbar-nav li a:hover, .navbar-nav li a.dropbtn:hover {
    background-color: var(--secondary-color);
}


/* --- REVISED: Dropdown Menu in Navbar --- */
.navbar-nav li.dropdown {
    position: relative;
}

.arrow {
    border: solid white;
    border-width: 0 2px 2px 0;
    display: inline-block;
    padding: 3px;
    margin-left: 8px;
    transition: transform 0.2s;
}

.down {
    transform: rotate(45deg);
}

.dropdown-content {
    display: none;
    position: absolute;
    background-color: #ffffff;
    min-width: 280px;
    box-shadow: 0px 8px 16px 0px rgba(0,0,0,0.2);
    z-index: 100;
    border-radius: var(--border-radius);
    border: 1px solid #ddd;
    /* --- FIX: Position dropdown directly below the parent --- */
    top: 100%;
    left: 0;
    padding-top: 5px; /* Add a little space at the top */
    padding-bottom: 5px;
}

.dropdown-content a {
    color: var(--dark-color);
    padding: 10px 16px;
    text-decoration: none;
    display: block;
    text-align: left;
    border-radius: 0;
    font-weight: 400;
}

.dropdown-content a:hover {
    background-color: #f1f1f1;
    color: var(--primary-color);
}

.dropdown:hover .dropdown-content {
    display: block;
}
.dropdown:hover .arrow {
    transform: rotate(-135deg);
}


/* --- Login Page --- */
.login-container {
    max-width: 400px;
    margin: 100px auto;
    padding: 2rem;
    background: var(--card-background);
    border-radius: var(--border-radius);
    box-shadow: var(--shadow);
    text-align: center;
}
.login-container h2 {
    margin-bottom: 1.5rem;
    color: var(--primary-color);
}

/* --- Forms --- */
.form-container, .login-container {
    background: var(--card-background);
    padding: 2rem;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow);
    margin-bottom: 2rem;
}

.form-group {
    margin-bottom: 1rem;
}

label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 500;
}

input[type="text"],
input[type="password"],
input[type="number"],
input[type="month"],
input[type="file"],
select {
    width: 100%;
    padding: 0.75rem;
    border: 1px solid #ccc;
    border-radius: var(--border-radius);
    font-family: 'Kanit', sans-serif;
    font-size: 1rem;
    transition: border-color 0.3s;
}

input:focus, select:focus {
    outline: none;
    border-color: var(--secondary-color);
}

button {
    display: inline-block;
    background: var(--secondary-color);
    color: #fff;
    padding: 0.75rem 1.5rem;
    border: none;
    border-radius: var(--border-radius);
    cursor: pointer;
    font-size: 1rem;
    font-family: 'Kanit', sans-serif;
    font-weight: 500;
    transition: background-color 0.3s;
}

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

/* --- Main Header --- */
.main-header {
    background: var(--card-background);
    padding: 2rem;
    margin-bottom: 2rem;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow);
}

.main-header h1 {
    color: var(--primary-color);
    margin-bottom: 0.5rem;
}

/* --- Dashboard --- */
.dashboard-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1.5rem;
}

.card {
    background: var(--card-background);
    padding: 1.5rem;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow);
    text-align: center;
    transition: transform 0.3s, box-shadow 0.3s;
}

.card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 15px rgba(0,0,0,0.1);
}

.card h3 {
    color: var(--grey-color);
    font-weight: 500;
    margin-bottom: 1rem;
}

.stat-number {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--primary-color);
}

.card-link {
    display: inline-block;
    margin-top: 1rem;
    color: var(--secondary-color);
    text-decoration: none;
    font-weight: 500;
}

/* --- Tables --- */
.table-container {
    background: var(--card-background);
    padding: 2rem;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow);
    overflow-x: auto; /* For responsive tables */
}

table {
    width: 100%;
    border-collapse: collapse;
    margin-top: 1rem;
}

th, td {
    padding: 1rem;
    text-align: left;
    border-bottom: 1px solid #eee;
}

thead th {
    background-color: var(--light-color);
    font-weight: 700;
    color: var(--primary-color);
}

tbody tr:hover {
    background-color: #f5f5f5;
}

.btn-delete {
    color: var(--error-color);
    text-decoration: none;
    font-weight: 500;
}

/* --- Alerts --- */
.alert {
    padding: 1rem;
    margin-bottom: 1rem;
    border-radius: var(--border-radius);
    color: #fff;
}
.alert.success {
    background-color: var(--success-color);
}
.alert.error {
    background-color: var(--error-color);
}
.error { /* For login page error */
    color: var(--error-color);
    margin-top: 1rem;
}

.alert-container {
    padding: 2rem;
    text-align: center;
    background-color: var(--card-background);
    border-radius: var(--border-radius);
    box-shadow: var(--shadow);
}
.alert-info {
    font-size: 1.2rem;
    color: var(--grey-color);
}