/* ====== Global Reset & Base ====== */
* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html, body {
    height: 100%;
    font-family: Arial, Helvetica, sans-serif;
    background:#f5f7f9;
}

/* ====== Page Layout (sticky footer) ====== */
.page-wrapper {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

.container {
    flex: 1 0 auto;
    width: 100%;
    max-width: 1100px;
    margin: 0 auto;
    padding: 20px 15px;
}

footer {
    flex-shrink: 0;
}

/* ====== Navbar ====== */
.navbar {
    background:#0f9b0f;            /* solid green strip */
    color:#fff;
    padding:10px 20px;
    display:flex;
    align-items:center;
    justify-content:space-between;
    box-shadow:0 2px 8px rgba(0,0,0,0.15);
}

.nav-brand {
    font-weight:700;
    font-size:20px;
}

.nav-brand span {
    font-size:12px;
    display:block;
    opacity:0.9;
}

.nav-links a {
    color:#fff;
    margin-left:15px;
    text-decoration:none;
    font-size:14px;
    padding:6px 10px;
    border-radius:6px;
}

.nav-links a:hover {
    background:rgba(255,255,255,0.15);
}

/* ====== Forms (Login / Register / Sale etc.) ====== */
.form-container {
    background:#ffffff;
    border-radius:12px;
    padding:20px;
    box-shadow:0 2px 8px rgba(0,0,0,0.05);
    max-width:600px;
    margin:30px auto;
}

.form-container h2, .form-container h3 {
    margin-bottom:10px;
}

.form-container p {
    margin-bottom:10px;
    font-size:13px;
    color:#555;
}

.form-container input[type="text"],
.form-container input[type="email"],
.form-container input[type="password"],
.form-container input[type="number"],
.form-container input[type="file"],
.form-container select,
.form-container textarea {
    width:100%;
    padding:8px 10px;
    margin:4px 0 10px 0;
    border:1px solid #d0d7de;
    border-radius:6px;
    font-size:14px;
}

.form-container textarea {
    resize:vertical;
}

.btn,
button {
    cursor:pointer;
}

/* ====== Bootstrap-like helpers ====== */
.mb-2 { margin-bottom:8px; }
.mb-3 { margin-bottom:12px; }
.w-100 { width:100%; }

.btn-primary,
.btn-success {
    background:#0f9b0f;
    border:none;
    color:#fff;
    padding:8px 14px;
    border-radius:6px;
    font-size:14px;
}

.btn-secondary {
    background:#3498db;
    border:none;
    color:#fff;
    padding:8px 14px;
    border-radius:6px;
    font-size:14px;
}

.btn-primary:hover,
.btn-success:hover,
.btn-secondary:hover {
    opacity:0.9;
}

/* ====== Dashboard cards / reports basic ====== */
.dashboard {
    max-width:1000px;
    margin:25px auto;
}

.stats-grid {
    display:flex;
    flex-wrap:wrap;
    gap:15px;
    margin-bottom:20px;
}

.stat-card {
    flex:1 1 200px;
    background:#fff;
    border-radius:10px;
    padding:15px;
    box-shadow:0 1px 5px rgba(0,0,0,0.05);
}

.stat-card h3 {
    font-size:14px;
    margin-bottom:5px;
}

.stat-number {
    font-size:20px;
    font-weight:700;
    color:#0f9b0f;
}

/* ====== Tables (reports, invoice) ====== */
.report-table,
.invoice-table {
    width:100%;
    border-collapse:collapse;
}

.report-table th,
.report-table td,
.invoice-table th,
.invoice-table td {
    border:1px solid #ddd;
    padding:8px;
    font-size:13px;
}

.report-table th,
.invoice-table th {
    background:#3498db;
    color:#fff;
}

/* ====== Invoice basic ====== */
.invoice {
    max-width:800px;
    margin:20px auto;
    background:#fff;
    padding:20px;
    border:1px solid #ddd;
}

/* ====== Alerts ====== */
.alert-danger {
    background:#ffe6e6;
    border:1px solid #ffb3b3;
    color:#c0392b;
    border-radius:6px;
}

/* ====== Responsive ====== */
@media (max-width:768px) {
    .navbar {
        flex-direction:column;
        align-items:flex-start;
    }
    .nav-links {
        margin-top:8px;
    }
    .stats-grid {
        flex-direction:column;
    }
}