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

:root {
    --primary-color: #0057ff;
    --secondary-color: #f0f3f7;
    --accent-color: #003fcc;
    --background-color: #f5f7fa;
    --text-color: #333;
    --card-bg: #ffffff;
    --border-radius: 16px;
    --box-shadow: 0 4px 20px rgba(0, 0, 0, 0.06);
}

body {
    font-family: 'Montserrat', sans-serif;
    margin: 0;
    padding: 0;
    background: var(--background-color);
    color: var(--text-color);
    transition: background 0.3s, color 0.3s;
}

.container {
    max-width: 1200px;
    margin: 40px auto;
    padding: 20px;
    background: var(--card-bg);
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow);
}

h1, h2, h3, h4 {
    color: #222;
    font-weight: 600;
    margin-bottom: 20px;
}

input[type="text"],
input[type="email"],
input[type="password"],
input[type="date"],
select,
textarea {
    width: 100%;
    padding: 12px 16px;
    margin: 10px 0 20px;
    border: 1px solid #ccc;
    border-radius: 10px;
    font-size: 16px;
    transition: all 0.3s ease;
    background: #fff;
    color: var(--text-color);
}

input:focus,
select:focus,
textarea:focus {
    border-color: var(--primary-color);
    outline: none;
    box-shadow: 0 0 5px rgba(0, 87, 255, 0.2);
}

button,
input[type="submit"] {
    background: var(--primary-color);
    color: #fff;
    padding: 12px 24px;
    font-size: 16px;
    font-weight: 600;
    border: none;
    border-radius: 12px;
    cursor: pointer;
    transition: background 0.3s ease, transform 0.2s ease;
}

button:hover,
input[type="submit"]:hover {
    background: var(--accent-color);
    transform: translateY(-2px);
}

.navbar {
    background: #fff;
    padding: 20px 40px;
    box-shadow: 0 2px 12px rgba(0, 0, 0, 0.04);
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-bottom: 1px solid #eee;
}

.navbar a {
    color: var(--text-color);
    text-decoration: none;
    font-weight: 600;
    margin-left: 20px;
}

.navbar a:hover {
    color: var(--primary-color);
}

.card {
    background: var(--card-bg);
    border-radius: var(--border-radius);
    padding: 24px;
    margin-bottom: 24px;
    box-shadow: var(--box-shadow);
}

.card h3 {
    margin-top: 0;
}

table {
    width: 100%;
    border-collapse: collapse;
    margin-top: 20px;
    font-size: 15px;
}

table thead {
    background: var(--secondary-color);
}

table th,
table td {
    padding: 12px 16px;
    text-align: left;
    border-bottom: 1px solid #e5e5e5;
}

table tr:hover {
    background: #f9fbff;
}

.text-center {
    text-align: center;
}

.mt-20 { margin-top: 20px; }
.mb-20 { margin-bottom: 20px; }

.btn-secondary {
    background: #e2e6f3;
    color: #333;
}

.btn-secondary:hover {
    background: #d0d6e8;
}

/* Responsive Layout */
@media (max-width: 768px) {
    .container {
        margin: 20px;
        padding: 15px;
    }

    .navbar {
        flex-direction: column;
        align-items: flex-start;
    }

    .navbar a {
        margin: 10px 0;
    }
}

/* Dark Mode Toggle */
.dark-mode {
    --background-color: #121212;
    --card-bg: #1e1e1e;
    --text-color: #f0f0f0;
    --secondary-color: #2a2a2a;
    --box-shadow: 0 4px 20px rgba(255, 255, 255, 0.05);
}

.dark-mode body {
    background: var(--background-color);
    color: var(--text-color);
}

.dark-mode .container,
.dark-mode .card {
    background: var(--card-bg);
}

.dark-mode input,
.dark-mode select,
.dark-mode textarea {
    background: #2a2a2a;
    color: #f0f0f0;
    border: 1px solid #444;
}

.dark-mode .navbar {
    background: var(--card-bg);
    border-bottom: 1px solid #444;
}

.dark-mode table thead {
    background: #2a2a2a;
}



/* Modal Styles */
.modal-backdrop {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.5);
    display: none;
    align-items: center;
    justify-content: center;
    z-index: var(--z-modal);
    animation: fadeIn 0.3s ease-in-out;
}

.modal-backdrop.active {
    display: flex;
}

.modal {
    background: var(--card-bg);
    padding: var(--space-xl);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--box-shadow-lg);
    width: 100%;
    max-width: 480px;
    position: relative;
    animation: slideUp 0.3s ease-in-out;
}

.modal-close {
    position: absolute;
    top: var(--space-md);
    right: var(--space-md);
    background: none;
    border: none;
    font-size: 1.5rem;
    color: var(--text-tertiary);
    cursor: pointer;
    transition: color var(--transition-fast);
}

.modal-close:hover {
    color: var(--primary-color);
}