/* Brand Colors */
:root {
    --color-royal-blue: #334EAC;
    --color-midnight-blue: #081F5C;
    --color-porcelain: #EDF1F6;
    --color-sky-blue: #BAD6EB;
}

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

html, body {
    height: 100%;
    width: 100%;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Oxygen', 'Ubuntu', 'Cantarell', 'Fira Sans', 'Droid Sans', 'Helvetica Neue', sans-serif;
    background-color: var(--color-porcelain);
    color: var(--color-midnight-blue);
    line-height: 1.5;
}

/* Login Page Styles */
.login-container {
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    background: linear-gradient(135deg, var(--color-midnight-blue) 0%, var(--color-royal-blue) 100%);
}

.login-box {
    background-color: white;
    padding: 40px;
    border-radius: 8px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
    width: 100%;
    max-width: 400px;
}

.login-title {
    text-align: center;
    color: var(--color-midnight-blue);
    font-size: 28px;
    font-weight: 700;
    margin-bottom: 30px;
}

.login-form input {
    width: 100%;
    padding: 12px;
    margin-bottom: 20px;
    border: 2px solid var(--color-sky-blue);
    border-radius: 4px;
    font-size: 14px;
    color: var(--color-midnight-blue);
    background-color: var(--color-porcelain);
    transition: border-color 0.3s;
    font-family: inherit;
}

.login-form input:focus {
    outline: none;
    border-color: var(--color-royal-blue);
    background-color: white;
}

.login-btn {
    width: 100%;
    padding: 12px;
    background: linear-gradient(135deg, var(--color-royal-blue) 0%, var(--color-midnight-blue) 100%);
    color: white;
    border: none;
    border-radius: 4px;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: opacity 0.3s;
}

.login-btn:hover {
    opacity: 0.9;
}

/* Error Messages */
.alert-error {
    background-color: #fee;
    color: #c33;
    padding: 12px;
    border-radius: 4px;
    margin-bottom: 20px;
    border-left: 4px solid #c33;
}

/* Success Messages */
.alert-success {
    background-color: #efe;
    color: #3c3;
    padding: 12px;
    border-radius: 4px;
    margin-bottom: 20px;
    border-left: 4px solid #3c3;
}

/* Dashboard Styles */
.dashboard-container {
    display: flex;
    min-height: 100vh;
    background-color: var(--color-porcelain);
}

.sidebar {
    width: 250px;
    background: linear-gradient(180deg, var(--color-midnight-blue) 0%, var(--color-royal-blue) 100%);
    padding: 20px;
    color: white;
    overflow-y: auto;
    position: fixed;
    left: 0;
    top: 0;
    height: 100vh;
    z-index: 1000;
}

.sidebar-header {
    font-size: 24px;
    font-weight: 700;
    margin-bottom: 30px;
    color: var(--color-sky-blue);
}

.sidebar-menu {
    list-style: none;
}

.sidebar-menu li {
    margin-bottom: 10px;
}

.sidebar-menu a {
    display: block;
    color: white;
    text-decoration: none;
    padding: 12px 15px;
    border-radius: 4px;
    transition: background-color 0.3s;
    font-size: 14px;
    font-weight: 500;
}

.sidebar-menu a:hover {
    background-color: var(--color-royal-blue);
    color: var(--color-sky-blue);
}

.sidebar-menu a.active {
    background-color: var(--color-sky-blue);
    color: var(--color-midnight-blue);
    font-weight: 600;
}

/* Main Content */
.main-content {
    margin-left: 250px;
    flex: 1;
    padding: 20px;
}

.top-bar {
    background-color: white;
    padding: 15px 20px;
    border-radius: 4px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
}

.top-bar-title {
    font-size: 24px;
    font-weight: 600;
    color: var(--color-midnight-blue);
}

.logout-btn {
    background-color: var(--color-royal-blue);
    color: white;
    border: none;
    padding: 10px 20px;
    border-radius: 4px;
    cursor: pointer;
    font-size: 14px;
    transition: background-color 0.3s;
    text-decoration: none;
}

.logout-btn:hover {
    background-color: var(--color-midnight-blue);
}

/* Dashboard Cards */
.dashboard-content {
    background-color: white;
    padding: 30px;
    border-radius: 8px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
}

.card {
    background-color: white;
    border: 2px solid var(--color-sky-blue);
    border-radius: 8px;
    padding: 20px;
    margin-bottom: 20px;
    transition: border-color 0.3s, box-shadow 0.3s;
}

.card:hover {
    border-color: var(--color-royal-blue);
    box-shadow: 0 4px 12px rgba(51, 78, 172, 0.1);
}

.card-title {
    color: var(--color-midnight-blue);
    font-size: 18px;
    font-weight: 600;
    margin-bottom: 10px;
}

.btn {
    padding: 10px 20px;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    font-size: 14px;
    transition: all 0.3s;
    text-decoration: none;
    display: inline-block;
}

.btn-primary {
    background-color: var(--color-royal-blue);
    color: white;
}

.btn-primary:hover {
    background-color: var(--color-midnight-blue);
}

.btn-secondary {
    background-color: var(--color-sky-blue);
    color: var(--color-midnight-blue);
}

.btn-secondary:hover {
    background-color: #A8D4E8;
}

/* Table Styles */
table {
    width: 100%;
    border-collapse: collapse;
}

table thead tr {
    background-color: var(--color-porcelain);
    border-bottom: 2px solid var(--color-sky-blue);
}

table th {
    padding: 12px;
    text-align: left;
    color: var(--color-midnight-blue);
    font-weight: 600;
}

table tbody tr {
    border-bottom: 1px solid var(--color-sky-blue);
}

table td {
    padding: 12px;
}

table tbody tr:hover {
    background-color: var(--color-porcelain);
}

/* Responsive */
@media (max-width: 768px) {
    .sidebar {
        width: 100%;
        position: relative;
        height: auto;
        padding: 15px;
    }

    .main-content {
        margin-left: 0;
        padding: 15px;
    }

    .dashboard-container {
        flex-direction: column;
    }

    .top-bar {
        flex-direction: column;
        gap: 15px;
    }

    .login-box {
        margin: 20px;
    }
}