* {
    box-sizing: border-box;
}

:root {
    --bg: #f4f6f8;
    --card: #ffffff;
    --text: #111827;
    --muted: #6b7280;
    --border: #e5e7eb;
    --primary: #111827;
    --primary-hover: #1f2937;
    --success-bg: #dcfce7;
    --success-text: #166534;
    --danger-bg: #fee2e2;
    --danger-text: #991b1b;
    --warning-bg: #fff7ed;
    --warning-text: #9a3412;
}

html {
    -webkit-text-size-adjust: 100%;
}

body {
    margin: 0;
    background: var(--bg);
    color: var(--text);
    font-family:
        -apple-system,
        BlinkMacSystemFont,
        "Segoe UI",
        Roboto,
        Helvetica,
        Arial,
        sans-serif;
}

a {
    color: inherit;
}

.container {
    width: 100%;
    max-width: 1100px;
    margin: 0 auto;
    padding: 24px;
}

.login-container {
    width: 100%;
    max-width: 460px;
    margin: 70px auto;
    padding: 20px;
}

.card {
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: 18px;
    padding: 26px;
    box-shadow: 0 5px 22px rgba(0, 0, 0, 0.06);
}

.logo {
    font-size: 27px;
    font-weight: 800;
    letter-spacing: -0.5px;
}

.logo span {
    color: var(--muted);
    font-weight: 400;
}

h1 {
    margin: 24px 0 8px;
    font-size: 27px;
}

h2 {
    margin: 0 0 18px;
    font-size: 21px;
}

h3 {
    margin-top: 0;
}

.subtitle,
.muted {
    color: var(--muted);
}

label {
    display: block;
    margin-bottom: 18px;
    font-size: 14px;
    font-weight: 600;
}

input,
textarea,
select {
    display: block;
    width: 100%;
    margin-top: 7px;
    padding: 13px 14px;
    border: 1px solid #d1d5db;
    border-radius: 10px;
    background: #fff;
    color: var(--text);
    font: inherit;
}

textarea {
    min-height: 120px;
    resize: vertical;
}

input:focus,
textarea:focus,
select:focus {
    outline: none;
    border-color: #6b7280;
    box-shadow: 0 0 0 3px rgba(17, 24, 39, 0.07);
}

button,
.button {
    display: inline-block;
    border: 0;
    border-radius: 10px;
    padding: 12px 18px;
    background: var(--primary);
    color: #fff;
    font: inherit;
    font-weight: 700;
    text-decoration: none;
    cursor: pointer;
}

button:hover,
.button:hover {
    background: var(--primary-hover);
}

.button-full {
    width: 100%;
    text-align: center;
}

.button-secondary {
    background: #e5e7eb;
    color: #111827;
}

.button-secondary:hover {
    background: #d1d5db;
}

.button-danger {
    background: #b91c1c;
}

.button-danger:hover {
    background: #991b1b;
}

.alert {
    margin: 18px 0;
    padding: 14px 16px;
    border-radius: 10px;
    line-height: 1.45;
}

.alert-success {
    background: var(--success-bg);
    color: var(--success-text);
}

.alert-danger {
    background: var(--danger-bg);
    color: var(--danger-text);
}

.alert-warning {
    background: var(--warning-bg);
    color: var(--warning-text);
}

.navbar {
    background: #fff;
    border-bottom: 1px solid var(--border);
}

.navbar-inner {
    max-width: 1100px;
    margin: 0 auto;
    padding: 14px 24px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 20px;
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 10px;
    flex-wrap: wrap;
}

.nav-links a {
    padding: 9px 12px;
    border-radius: 8px;
    text-decoration: none;
    font-weight: 600;
    font-size: 14px;
}

.nav-links a:hover {
    background: #f3f4f6;
}

.grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 20px;
}

.grid-3 {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 18px;
}

.stat {
    background: #fff;
    border: 1px solid var(--border);
    border-radius: 16px;
    padding: 20px;
}

.stat-number {
    font-size: 30px;
    font-weight: 800;
}

.stat-label {
    margin-top: 5px;
    color: var(--muted);
}

.table-wrap {
    overflow-x: auto;
    background: #fff;
    border: 1px solid var(--border);
    border-radius: 14px;
}

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

th,
td {
    padding: 13px 14px;
    text-align: left;
    border-bottom: 1px solid var(--border);
    vertical-align: top;
}

th {
    background: #f9fafb;
    font-size: 13px;
    color: #4b5563;
}

tr:last-child td {
    border-bottom: 0;
}

.actions {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
}

.page-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 15px;
    margin-bottom: 22px;
}

.page-header h1 {
    margin: 0;
}

.checkbox-row {
    display: flex;
    align-items: center;
    gap: 10px;
    margin: 15px 0;
}

.checkbox-row input {
    width: auto;
    margin: 0;
}

.visit-item {
    padding: 16px 0;
    border-bottom: 1px solid var(--border);
}

.visit-item:last-child {
    border-bottom: 0;
}

.visit-title {
    font-weight: 700;
    margin-bottom: 5px;
}

.visit-meta {
    color: var(--muted);
    font-size: 14px;
    margin-bottom: 7px;
}

.empty {
    padding: 25px;
    text-align: center;
    color: var(--muted);
}

@media (max-width: 760px) {

    .container {
        padding: 16px;
    }

    .login-container {
        margin: 30px auto;
        padding: 16px;
    }

    .card {
        padding: 20px;
    }

    .grid,
    .grid-3 {
        grid-template-columns: 1fr;
    }

    .navbar-inner {
        padding: 12px 16px;
        align-items: flex-start;
        flex-direction: column;
    }

    .page-header {
        align-items: flex-start;
        flex-direction: column;
    }

    button,
    .button {
        min-height: 44px;
    }

    input,
    textarea,
    select {
        font-size: 16px;
    }
}