/* =============================
   RESET & GLOBAL
============================= */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: Arial, sans-serif;
    background: #f4f6f9;
    color: #333;
}

/* =============================
   CONTAINER
============================= */
.container {
    max-width: 1100px;
    margin: auto;
    padding: 20px;
}

/* =============================
   BUTTON
============================= */
.btn {
    display: inline-block;
    padding: 10px 16px;
    border-radius: 6px;
    text-decoration: none;
    color: white;
    border: none;
    cursor: pointer;
}

.btn-primary { background: #1e88e5; }
.btn-success { background: #28a745; }
.btn-warning { background: #ff9800; }
.btn-danger  { background: #e53935; }

/* =============================
   CARD
============================= */
.card {
    background: #fff;
    padding: 20px;
    border-radius: 10px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.05);
    margin-bottom: 20px;
}

/* =============================
   TABLE
============================= */
table {
    width: 100%;
    border-collapse: collapse;
    background: #fff;
}

table th, table td {
    padding: 12px;
    border: 1px solid #ddd;
}

table th {
    background: #1e88e5;
    color: white;
}

/* =============================
   ALERT
============================= */
.alert {
    padding: 12px;
    border-radius: 6px;
    margin-bottom: 15px;
}

.alert-success {
    background: #e8f5e9;
    color: #2e7d32;
}

.alert-error {
    background: #ffebee;
    color: #c62828;
}

/* =============================
   FORM
============================= */
input, select, button {
    width: 100%;
    padding: 12px;
    margin-top: 10px;
}

/* =============================
   SIDEBAR (ADMIN & USER)
============================= */
.sidebar {
    width: 240px;
    min-height: 100vh;
    background: #1e88e5;
    color: #fff;
    float: left;
    padding: 20px;
}

.sidebar a {
    display: block;
    color: white;
    text-decoration: none;
    margin: 12px 0;
}

/* =============================
   CONTENT AREA
============================= */
.content {
    margin-left: 240px;
    padding: 30px;
}

/* =============================
   HERO LANDING PAGE
============================= */
.hero {
    text-align: center;
    padding: 100px 20px;
    color: white;
}

.hero h1 {
    font-size: 42px;
    margin-bottom: 15px;
}

.hero p {
    max-width: 800px;
    margin: auto;
}

/* =============================
   GRID
============================= */
.grid {
    display: grid;
    gap: 20px;
}

.grid-2 {
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
}

.grid-3 {
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
}