:root {
    --primary-color: #D2B48C; /* Coklat Muda */
    --primary-dark: #A0522D; /* Coklat Tua */
    --bg-color: #FAF0E6; /* Linen */
    --text-color: #333;
}

* { box-sizing: border-box; margin: 0; padding: 0; font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif; }
body { background-color: var(--bg-color); color: var(--text-color); display: flex; flex-direction: column; min-height: 100vh; }

/* Header & Footer */
header { background-color: var(--primary-color); color: white; padding: 15px; display: flex; justify-content: space-between; align-items: center; box-shadow: 0 2px 5px rgba(0,0,0,0.1); }
header h1 { font-size: 1.2rem; }
footer { background-color: var(--primary-dark); color: white; text-align: center; padding: 10px; margin-top: auto; font-size: 0.8rem; }

/* Container */
.container { padding: 15px; max-width: 1200px; margin: 0 auto; width: 100%; }

/* Card & Forms */
.card { background: white; padding: 20px; border-radius: 8px; box-shadow: 0 2px 10px rgba(0,0,0,0.05); margin-bottom: 20px; }
.form-group { margin-bottom: 15px; }
.form-group label { display: block; margin-bottom: 5px; font-weight: bold; font-size: 0.9rem; }
.form-control { width: 100%; padding: 10px; border: 1px solid #ccc; border-radius: 4px; font-size: 1rem; }
textarea.form-control { resize: vertical; min-height: 100px; }
.btn { padding: 10px 15px; border: none; border-radius: 4px; cursor: pointer; font-size: 1rem; color: white; background-color: var(--primary-dark); text-decoration: none; display: inline-block; }
.btn-primary { background-color: var(--primary-dark); width: 100%; }
.btn-sm { padding: 5px 10px; font-size: 0.8rem; }

/* Table Responsive (Untuk HP) */
.table-responsive { overflow-x: auto; }
table { width: 100%; border-collapse: collapse; margin-top: 10px; }
th, td { padding: 10px; border: 1px solid #ddd; text-align: left; font-size: 0.9rem; }
th { background-color: var(--primary-color); color: white; }

/* Login Page */
.login-container { max-width: 400px; margin: 50px auto; padding: 20px; }
.logo-sekolah { display: block; margin: 0 auto 20px; max-width: 100px; }

/* Responsive untuk PC */
@media (min-width: 768px) {
    .grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
    header h1 { font-size: 1.5rem; }
    .btn-primary { width: auto; }
}

header { position: sticky; top: 0; z-index: 100; }
footer { position: relative; bottom: 0; width: 100%; }
@media (max-width: 600px) {
    header { flex-direction: column; gap: 8px; text-align: center; }
    header h1 { font-size: 1rem; }
    .card { padding: 15px; }
}

/* Tombol Kembali */
.btn-back {
    display: inline-block;
    background: #A0522D;
    color: white;
    padding: 6px 14px;
    border-radius: 6px;
    text-decoration: none;
    font-size: 0.9rem;
    font-weight: 500;
    margin-bottom: 15px;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
    transition: background 0.2s;
}
.btn-back:hover { background: #8B4513; }
.btn-back:active { transform: scale(0.97); }

@media (max-width: 600px) {
    .btn-back { font-size: 0.85rem; padding: 8px 12px; }
}