/* ===========================
   Sagar PG Management System
   style.css - Fully Responsive + Premium
   =========================== */

/* ---------- RESET ---------- */
* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}
body {
    font-family: 'Inter', Arial, sans-serif;
    background: #f7f7f7;
    color: #222;
    line-height: 1.5;
    font-size: 16px;
}
a {
    color: inherit;
    text-decoration: none;
}
.container {
    max-width: 1000px;
    margin: 20px auto;
    padding: 16px;
}

/* ---------- NAVBAR ---------- */
.nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 14px 20px;
    background: var(--primary, #0b5ed7);
    color: #fff;
    border-radius: 8px;
    flex-wrap: wrap;
}
.nav .brand {
    font-weight: 700;
    font-size: 1.4rem;
}
.nav .btn {
    margin-left: 10px;
}

/* ---------- BUTTONS ---------- */
.btn {
    display: inline-block;
    padding: 10px 16px;
    background: var(--primary, #0b5ed7);
    color: #fff;
    border-radius: 8px;
    border: none;
    cursor: pointer;
    font-weight: 600;
    transition: 0.3s;
}
.btn:hover {
    opacity: 0.9;
}
.btn.small {
    padding: 6px 10px;
    font-size: 0.9rem;
}
.btn.xsmall {
    padding: 4px 6px;
    font-size: 0.8rem;
}
.btn.danger {
    background: #d9534f;
}

/* ---------- ALERTS ---------- */
.alert {
    padding: 12px 16px;
    border-radius: 8px;
    margin-bottom: 14px;
}
.alert-error {
    background: #ffe7e7;
    color: #a40000;
}
.alert-success {
    background: #e6ffef;
    color: #007a3d;
}

/* ---------- CARDS ---------- */
.card {
    background: #fff;
    padding: 20px;
    border-radius: 12px;
    box-shadow: 0 6px 18px rgba(0, 0, 0, 0.06);
    margin-bottom: 20px;
}

/* ---------- FORMS ---------- */
form label {
    display: block;
    margin-bottom: 6px;
    font-weight: 500;
}
form input, form textarea, form select {
    width: 100%;
    padding: 10px;
    margin-top: 4px;
    border: 1px solid #ddd;
    border-radius: 8px;
    transition: 0.3s;
}
form input:focus, form textarea:focus, form select:focus {
    border-color: var(--primary, #0b5ed7);
    outline: none;
}
textarea { resize: vertical; }

/* ---------- TABLES ---------- */
.table {
    width: 100%;
    border-collapse: collapse;
    margin-top: 12px;
}
.table th, .table td {
    padding: 12px;
    border-bottom: 1px solid #eee;
    text-align: left;
}
.table th {
    background: #f1f1f1;
    font-weight: 600;
}
.thumb {
    height: 48px;
    width: 48px;
    object-fit: cover;
    border-radius: 6px;
}

/* ---------- GRID / STATS ---------- */
.grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 16px;
}
.stat .big {
    font-size: 1.6rem;
    font-weight: 700;
}

/* ---------- RESPONSIVE ---------- */
@media (max-width: 768px) {
    .nav {
        flex-direction: column;
        gap: 8px;
        text-align: center;
    }
    .container { padding: 12px; }
    .table th, .table td { font-size: 14px; }
}
@media (max-width: 480px) {
    .btn { padding: 8px 12px; font-size: 0.9rem; }
    .card { padding: 14px; }
}

/* ===========================
   PREMIUM THEME
   Add class "premium" to body
   =========================== */
body.premium {
    background: linear-gradient(180deg, #0f172a, #071126);
    color: #e6eef8;
    font-family: 'Poppins', Arial, sans-serif;
}
body.premium .card {
    background: linear-gradient(180deg, rgba(255,255,255,0.03), rgba(255,255,255,0.02));
    box-shadow: 0 10px 30px rgba(2,6,23,0.6);
    border: 1px solid rgba(255,255,255,0.03);
}
body.premium .nav {
    background: linear-gradient(90deg, #0ea5a4, #0369a1);
}
body.premium .btn {
    background: #06b6d4;
    color: #fff;
}
body.premium form input,
body.premium form textarea,
body.premium form select {
    background: transparent;
    border: 1px solid rgba(255,255,255,0.06);
    color: #dbeafe;
}
body.premium .table th,
body.premium .table td {
    border-color: rgba(255,255,255,0.03);
}
body.premium .table th {
    background: rgba(255,255,255,0.05);
}
body.premium .thumb {
    border: 1px solid rgba(255,255,255,0.04);
}