/* Base Variables - Reused from your design */
:root {
    --bg: #f5f7fb;
    --card: #ffffff;
    --text: #2c3e50;
    --muted: #6b7280;
    --primary: #2563eb;
    --primary-dark: #1e40af;
    --success: #16a34a;
    --success-bg: #e7f7ec;
    --danger: #dc2626;
    --danger-bg: #fde8e8;
    --border: #e5e7eb;
    --shadow: 0 6px 20px rgba(0, 0, 0, .06);
    --radius: 14px;
}

* {
    box-sizing: border-box;
}

body {
    margin: 0;
    font-family: system-ui, -apple-system, Segoe UI, Roboto, sans-serif;
    background: var(--bg);
    color: var(--text);
    line-height: 1.5;
}

.container {
    max-width: 1000px;
    margin: 40px auto;
    padding: 0 16px;
}

/* Card Component */
.card {
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    padding: 24px;
    margin-bottom: 20px;
}

h1,
h2 {
    text-align: center;
    margin-top: 0;
}

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

.text-gray {
    color: var(--muted);
}

/* Flex Grid */
.row {
    display: flex;
    gap: 16px;
    flex-wrap: wrap;
    justify-content: center;
    margin-bottom: 16px;
}

.card-stat {
    flex: 1;
    min-width: 200px;
    text-align: center;
}

/* Forms & Inputs */
.file-input,
select,
textarea,
input[type="text"],
input[type="email"],
input[type="password"] {
    padding: 12px;
    border: 1px solid var(--border);
    border-radius: 10px;
    width: 100%;
    margin-top: 8px;
    font-size: 14px;
}

textarea {
    resize: vertical;
}

/* Buttons */
.btn {
    appearance: none;
    border: none;
    border-radius: 10px;
    padding: 12px 20px;
    background: var(--primary);
    color: #fff;
    cursor: pointer;
    font-weight: 600;
    transition: transform 0.15s ease, background 0.15s ease;
    text-decoration: none;
    display: inline-block;
}

.btn:hover {
    background: var(--primary-dark);
    transform: translateY(-1px);
}

.btn.secondary {
    background: #10b981;
}

.btn.secondary:hover {
    background: #059669;
}

/* Table Styling */
.table-wrap {
    overflow-x: auto;
    border-radius: 12px;
    border: 1px solid var(--border);
}

table {
    width: 100%;
    border-collapse: collapse;
}

thead th {
    background: #f3f4f6;
    text-align: left;
    padding: 12px 14px;
    font-size: 14px;
}

tbody td {
    padding: 12px 14px;
    border-bottom: 1px solid var(--border);
    font-size: 14px;
}

/* Badges & Alerts */
.badge {
    padding: 4px 12px;
    border-radius: 999px;
    font-size: 12px;
    font-weight: 700;
}

.badge.ok {
    background: var(--success-bg);
    color: var(--success);
}

.badge.no {
    background: var(--danger-bg);
    color: var(--danger);
}

.alert {
    padding: 14px;
    border-radius: 10px;
    margin-bottom: 20px;
    border: 1px solid;
    text-align: center;
}

.alert-success {
    background: var(--success-bg);
    color: var(--success);
    border-color: #bbf7d0;
}

.alert-error {
    background: var(--danger-bg);
    color: var(--danger);
    border-color: #fecaca;
}

.count {
    font-size: 2.5rem;
    font-weight: 700;
    margin-top: 10px;
}

.sent {
    color: var(--success);
}

.unsent {
    color: var(--danger);
}