* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
    font-family: Arial, sans-serif;
}

html, body { height: 100%; }

body {
    background: #f4f6f9;
    color: #333;
    line-height: 1.6;
    display: flex;
    flex-direction: column;
}

.container {
    width: min(1100px, 100% - 2rem);
    margin-inline: auto;
}

/* Header & Footer */
.main-header,
.main-footer {
    background: #1f3c88;
    color: #fff;
    padding: .75rem 0;
}

.main-header .container,
.inline-form,
.checkbox {
    display: flex;
    align-items: center;
}

.main-header .container {
    justify-content: space-between;
    gap: 1rem;
}

.main-header .logo {
    font-size: 1.4rem;
    font-weight: bold;
}

.main-header nav ul {
    list-style: none;
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
}

.main-header nav a {
    color: #fff;
    text-decoration: none;
    font-size: .9rem;
}

.main-header nav a:hover { text-decoration: underline; }

main.container {
    padding: 1.25rem 0 2rem;
    flex: 1;
}

.main-footer {
    text-align: center;
    margin-top: 2rem;
    width: 100%;
    flex-shrink: 0;
}

.main-footer .container { font-size: .8rem; }

/* Hero & Cards & Forms */
.hero,
.card,
.form-card {
    background: #fff;
    border-radius: .6rem;
    margin-top: 1rem;
    box-shadow: 0 1px 4px rgba(0,0,0,.06);
}

.hero {
    padding: 2rem 1.5rem;
    text-align: center;
}

.hero h2 {
    font-size: 1.6rem;
    margin-bottom: .75rem;
}

.hero p { margin-bottom: 1rem; }

/* Buttons */
.btn {
    display: inline-block;
    padding: .5rem 1rem;
    border-radius: .25rem;
    border: 1px solid transparent;
    cursor: pointer;
    font-size: .9rem;
    text-decoration: none;
    transition: .15s;
}

.btn.primary   { background: #1f3c88; color: #fff; }
.btn.secondary { background: #28a745; color: #fff; }
.btn.danger    { background: #dc3545; color: #fff; }
.btn.outline   { background: #fff; color: #1f3c88; border-color: #1f3c88; }
.btn.small     { padding: .25rem .5rem; font-size: .8rem; }

.btn:hover { box-shadow: 0 2px 4px rgba(0,0,0,.15); }

/* Form */
.form-card { padding: 1.25rem; }

.form-card label {
    display: block;
    margin-bottom: .5rem;
    font-size: .9rem;
}

.form-card input,
.form-card textarea,
.form-card select {
    width: 100%;
    padding: .4rem .5rem;
    margin-top: .25rem;
    border-radius: .25rem;
    border: 1px solid #ccc;
    font-size: .9rem;
}

.form-card textarea { resize: vertical; }

/* Alerts */
.alert {
    padding: .6rem .9rem;
    border-radius: .25rem;
    margin: .75rem 0 .25rem;
    font-size: .85rem;
}

.alert.error   { background: #f8d7da; color: #842029; }
.alert.success { background: #d1e7dd; color: #0f5132; }

/* Tables */
.data-table {
    width: 100%;
    border-collapse: collapse;
    margin-top: 1rem;
    background: #fff;
    font-size: .9rem;
}

.data-table th,
.data-table td {
    padding: .6rem;
    border: 1px solid #ddd;
    text-align: left;
}

.data-table th { background: #f1f1f1; }

/* Stats Grid */
.grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
    gap: .75rem;
    margin-top: 1rem;
}

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

.stat-number {
    font-size: 1.4rem;
    font-weight: bold;
    margin-top: .25rem;
}

/* Inline form & checkbox */
.inline-form {
    gap: .4rem;
    flex-wrap: wrap;
}

.inline-form select {
    padding: .25rem .4rem;
    font-size: .8rem;
}

.checkbox {
    gap: .4rem;
    font-size: .85rem;
}

/* Mobile tweaks */
@media (max-width: 600px) {
    .hero { padding: 1.25rem 1rem; }
    .main-header .container {
        flex-direction: column;
        align-items: flex-start;
    }
}