/* assets/css/style.css */
:root {
    /* Light Mode Variables */
    --bg-color: #f4f7fa;
    --card-bg: #ffffff;
    --text-color: #333333;
    --text-muted: #6c757d;
    --primary-color: #4a90e2;
    --secondary-color: #f39c12;
    --border-color: #e1e4e8;
    --sidebar-bg: #ffffff;
    --sidebar-text: #333333;
    --success-color: #2ecc71;
    --danger-color: #e74c3c;
    --shadow: 0 4px 6px rgba(0,0,0,0.1);
}

[data-theme="dark"] {
    /* Dark Mode Variables */
    --bg-color: #121212;
    --card-bg: #1e1e1e;
    --text-color: #e0e0e0;
    --text-muted: #a0a0a0;
    --primary-color: #bb86fc;
    --secondary-color: #03dac6;
    --border-color: #333333;
    --sidebar-bg: #1f1f1f;
    --sidebar-text: #e0e0e0;
    --success-color: #00e676;
    --danger-color: #ff5252;
    --shadow: 0 4px 6px rgba(255,255,255,0.05);
}

* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
    font-family: 'Inter', 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    transition: background-color 0.3s, color 0.3s;
}

body {
    background-color: var(--bg-color);
    color: var(--text-color);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

/* Layout */
.wrapper {
    display: flex;
    flex: 1;
}

/* Sidebar */
.sidebar {
    width: 250px;
    background-color: var(--sidebar-bg);
    border-right: 1px solid var(--border-color);
    padding: 20px 0;
    height: 100vh;
    position: sticky;
    top: 0;
}
.sidebar .logo {
    text-align: center;
    font-size: 24px;
    font-weight: bold;
    color: var(--primary-color);
    margin-bottom: 30px;
}
.sidebar ul {
    list-style: none;
}
.sidebar ul li a {
    display: block;
    padding: 15px 20px;
    color: var(--sidebar-text);
    text-decoration: none;
    font-weight: 500;
}
.sidebar ul li a:hover, .sidebar ul li a.active {
    background-color: rgba(0,0,0,0.05);
    color: var(--primary-color);
    border-left: 4px solid var(--primary-color);
}
[data-theme="dark"] .sidebar ul li a:hover {
    background-color: rgba(255,255,255,0.05);
}

/* Main Content */
.main-content {
    flex: 1;
    padding: 20px 40px;
}

/* Topbar */
.topbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-bottom: 20px;
    border-bottom: 1px solid var(--border-color);
    margin-bottom: 20px;
}
.topbar h2 {
    font-size: 24px;
    font-weight: 600;
}
.theme-toggle {
    background: none;
    border: none;
    cursor: pointer;
    font-size: 24px;
    color: var(--text-color);
    display: flex;
    align-items: center;
}

/* Cards */
.card {
    background-color: var(--card-bg);
    border-radius: 10px;
    box-shadow: var(--shadow);
    padding: 20px;
    margin-bottom: 20px;
    border: 1px solid var(--border-color);
}

/* Forms */
.form-group {
    margin-bottom: 15px;
}
.form-group label {
    display: block;
    margin-bottom: 5px;
    font-weight: 500;
}
.form-control {
    width: 100%;
    padding: 10px 15px;
    border: 1px solid var(--border-color);
    border-radius: 5px;
    background-color: transparent;
    color: var(--text-color);
    font-size: 16px;
}
.form-control:focus {
    outline: none;
    border-color: var(--primary-color);
}
.btn {
    padding: 10px 20px;
    border: none;
    border-radius: 5px;
    background-color: var(--primary-color);
    color: #fff;
    cursor: pointer;
    font-size: 16px;
    font-weight: 600;
    text-transform: uppercase;
    transition: opacity 0.3s;
}
.btn:hover {
    opacity: 0.9;
}
.btn-block {
    width: 100%;
    display: block;
}

/* Login Page Specific */
.login-container {
    max-width: 400px;
    margin: 100px auto;
    width: 100%;
    padding: 0 20px;
}
.login-card {
    background-color: var(--card-bg);
    padding: 40px 30px;
    border-radius: 12px;
    box-shadow: var(--shadow);
    text-align: center;
    border: 1px solid var(--border-color);
}
.login-card h1 {
    margin-bottom: 10px;
    color: var(--primary-color);
}
.login-card p {
    color: var(--text-muted);
    margin-bottom: 30px;
}
.alert {
    padding: 15px;
    border-radius: 5px;
    margin-bottom: 20px;
}
.alert-danger {
    background-color: rgba(231, 76, 60, 0.1);
    color: var(--danger-color);
    border: 1px solid var(--danger-color);
}
.alert-success {
    background-color: rgba(46, 204, 113, 0.1);
    color: var(--success-color);
    border: 1px solid var(--success-color);
}