*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
    --primary: #2563eb;
    --primary-dark: #1d4ed8;
    --success: #16a34a;
    --danger: #dc2626;
    --warning: #d97706;
    --bg: #f1f5f9;
    --card: #ffffff;
    --text: #1e293b;
    --muted: #64748b;
    --border: #e2e8f0;
    --radius: 8px;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background: var(--bg);
    color: var(--text);
    line-height: 1.6;
    min-height: 100vh;
}

a { color: var(--primary); text-decoration: none; }
a:hover { text-decoration: underline; }

.container { max-width: 1100px; margin: 0 auto; padding: 1.5rem; }

body.nav-open { overflow: hidden; }

/* Site header + logo */
.site-header {
    display: grid;
    grid-template-columns: 1fr auto 1fr;
    align-items: center;
    background: var(--primary);
    border-bottom: 1px solid var(--primary-dark);
    padding: 0.65rem 1.5rem;
    position: sticky;
    top: 0;
    z-index: 1001;
    min-height: 53px;
}

.site-logo {
    grid-column: 2;
    justify-self: center;
    display: inline-flex;
    align-items: center;
    text-decoration: none;
    line-height: 0;
}

.site-logo:hover { opacity: 0.92; text-decoration: none; }

.site-logo img {
    display: block;
    height: 38px;
    width: auto;
    max-width: min(220px, 70vw);
}

.site-header .nav-toggle {
    grid-column: 3;
    justify-self: end;
    background: transparent;
    border-color: rgba(255, 255, 255, 0.55);
}

.site-header .nav-toggle-bar {
    background: #fff;
}

/* Navbar */
.navbar {
    background: var(--primary);
    border-bottom: 1px solid var(--primary-dark);
    position: sticky;
    top: 53px;
    z-index: 1000;
}

.nav-top {
    display: none;
}

.nav-brand {
    font-weight: 700;
    font-size: 1.1rem;
    color: var(--primary);
    text-decoration: none;
    line-height: 1.2;
}

.nav-toggle {
    display: none;
    flex-direction: column;
    justify-content: center;
    gap: 5px;
    width: 44px;
    height: 44px;
    padding: 0;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    background: var(--card);
    cursor: pointer;
}

.nav-toggle-bar {
    display: block;
    width: 20px;
    height: 2px;
    margin: 0 auto;
    background: var(--text);
    border-radius: 2px;
    transition: transform 0.2s, opacity 0.2s;
}

.navbar.is-open .nav-toggle-bar:nth-child(1),
body.nav-open .nav-toggle-bar:nth-child(1) {
    transform: translateY(7px) rotate(45deg);
}
.navbar.is-open .nav-toggle-bar:nth-child(2),
body.nav-open .nav-toggle-bar:nth-child(2) {
    opacity: 0;
}
.navbar.is-open .nav-toggle-bar:nth-child(3),
body.nav-open .nav-toggle-bar:nth-child(3) {
    transform: translateY(-7px) rotate(-45deg);
}

.nav-links {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 0.25rem 1rem;
    padding: 0 1.5rem 0.75rem;
}

.nav-links a {
    color: rgba(255, 255, 255, 0.92);
    font-size: 0.9rem;
    padding: 0.35rem 0;
    text-decoration: none;
}

.nav-links a:hover { color: #fff; text-decoration: none; }

.nav-section {
    display: none;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.04em;
    color: rgba(255, 255, 255, 0.65);
}

.nav-footer {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    margin-left: auto;
}

.nav-footer .btn {
    padding-left: 1.25rem;
    padding-right: 1.25rem;
}

.nav-user {
    color: rgba(255, 255, 255, 0.85);
    font-size: 0.85rem;
    white-space: nowrap;
}

.nav-footer .btn-outline {
    border-color: rgba(255, 255, 255, 0.6);
    color: #fff;
}

.nav-footer .btn-outline:hover {
    background: rgba(255, 255, 255, 0.15);
    color: #fff;
    text-decoration: none;
}

.nav-overlay {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(15, 23, 42, 0.45);
    z-index: 999;
    border: none;
    padding: 0;
    margin: 0;
    cursor: pointer;
}

.navbar.is-open .nav-overlay,
body.nav-open .nav-overlay {
    display: block;
}

/* Desktop: inline menu */
@media (min-width: 769px) {
    .site-header .nav-toggle { display: none; }

    .navbar {
        display: flex;
        align-items: center;
        top: 53px;
    }

    .nav-links {
        flex: 1;
        display: flex;
        align-items: center;
        flex-wrap: wrap;
        gap: 0.25rem 1rem;
        padding: 0.6rem 1.5rem;
    }

    .nav-footer {
        margin-left: auto;
        padding-left: 1rem;
    }
}

/* Cards */
.card {
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 1.5rem;
    margin-bottom: 1.5rem;
}

.auth-card {
    max-width: 420px;
    margin: 4rem auto;
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 2rem;
}

.auth-card h1 { margin-bottom: 1.5rem; }
.auth-footer { margin-top: 1rem; text-align: center; color: var(--muted); font-size: 0.9rem; }

/* Forms */
.form-group { margin-bottom: 1rem; }
.form-group label { display: block; font-weight: 500; margin-bottom: 0.25rem; font-size: 0.9rem; }
.form-group input, .form-group textarea, .form-group select {
    width: 100%;
    padding: 0.5rem 0.75rem;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    font-size: 1rem;
}
.form-group input:focus, .form-group textarea:focus, .form-group select:focus { outline: 2px solid var(--primary); outline-offset: -1px; }
.form-group select { width: 100%; padding: 0.5rem 0.75rem; border: 1px solid var(--border); border-radius: var(--radius); font-size: 1rem; background: #fff; }
.checkbox-label { display: flex; align-items: center; gap: 0.5rem; margin-top: 1.75rem; font-weight: 500; }
.checkbox-label input { width: auto; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; }
.form-actions { display: flex; gap: 0.5rem; margin-top: 1rem; }
.code-input { font-size: 1.5rem; letter-spacing: 0.5rem; text-align: center; font-family: monospace; }

/* Buttons */
.btn {
    display: inline-block;
    padding: 0.5rem 1rem;
    border: none;
    border-radius: var(--radius);
    font-size: 0.9rem;
    cursor: pointer;
    text-decoration: none;
    text-align: center;
    transition: background 0.15s;
}
.btn-primary { background: var(--primary); color: #fff; }
.btn-primary:hover { background: var(--primary-dark); text-decoration: none; color: #fff; }
.btn-success { background: var(--success); color: #fff; }
.btn-danger { background: var(--danger); color: #fff; }
.btn-outline { background: transparent; border: 1px solid var(--border); color: var(--text); }
.btn-outline:hover { background: var(--bg); text-decoration: none; }
.btn-sm { padding: 0.25rem 0.75rem; font-size: 0.8rem; }
.btn-lg { padding: 0.75rem 1.5rem; font-size: 1rem; }
.btn-block { display: block; width: 100%; }

/* Alerts */
.alert { padding: 0.75rem 1rem; border-radius: var(--radius); margin-bottom: 1rem; }
.alert-success { background: #dcfce7; color: #166534; border: 1px solid #bbf7d0; }
.alert-error { background: #fee2e2; color: #991b1b; border: 1px solid #fecaca; }

/* Table */
.table { width: 100%; border-collapse: collapse; font-size: 0.9rem; }
.table th, .table td { padding: 0.75rem; text-align: left; border-bottom: 1px solid var(--border); }
.table th { font-weight: 600; color: var(--muted); font-size: 0.8rem; text-transform: uppercase; }

/* Badges */
.badge {
    display: inline-block;
    padding: 0.15rem 0.5rem;
    border-radius: 999px;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
}
.badge-pending { background: #fef3c7; color: #92400e; }
.badge-approved { background: #dcfce7; color: #166534; }
.badge-rejected { background: #fee2e2; color: #991b1b; }
.badge-success { background: #dcfce7; color: #166534; }

/* Layout helpers */
h1 { margin-bottom: 1rem; }
h2 { margin-bottom: 0.75rem; font-size: 1.1rem; }
.page-header { display: flex; justify-content: space-between; align-items: center; margin-bottom: 1.5rem; flex-wrap: wrap; gap: 0.5rem; }
.muted { color: var(--muted); }
.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 1.5rem; margin-bottom: 1.5rem; }
.action-links { display: flex; flex-direction: column; gap: 0.5rem; }
.status-active { color: var(--success); font-weight: 600; margin-bottom: 0.75rem; }
.inline-form { display: inline; }

.btn-center-wrap {
    display: flex;
    justify-content: center;
    margin-bottom: 40px;
}

/* Stats */
.stats-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1rem; margin-bottom: 1rem; }
.stat-card { background: var(--card); border: 1px solid var(--border); border-radius: var(--radius); padding: 1.25rem; text-align: center; }
.stat-number { display: block; font-size: 2rem; font-weight: 700; }
.stat-label { color: var(--muted); font-size: 0.85rem; }
.stat-pending .stat-number { color: var(--warning); }
.stat-approved .stat-number { color: var(--success); }
.stat-rejected .stat-number { color: var(--danger); }

/* Tabs */
.tabs { display: flex; gap: 0.25rem; margin-bottom: 1rem; border-bottom: 1px solid var(--border); }
.tab { padding: 0.5rem 1rem; color: var(--muted); border-bottom: 2px solid transparent; }
.tab.active { color: var(--primary); border-bottom-color: var(--primary); font-weight: 600; }
.tab:hover { text-decoration: none; color: var(--primary); }

/* Calendar */
.calendar-nav { display: flex; align-items: center; gap: 1rem; }
.calendar-month { font-weight: 600; min-width: 160px; text-align: center; text-transform: capitalize; }
.calendar-grid { display: grid; grid-template-columns: repeat(7, 1fr); gap: 2px; }
.calendar-header { text-align: center; font-weight: 600; font-size: 0.8rem; color: var(--muted); padding: 0.5rem; }
.calendar-day {
    min-height: 80px;
    border: 1px solid var(--border);
    border-radius: 4px;
    padding: 0.25rem;
    font-size: 0.8rem;
}
.calendar-day.empty { background: var(--bg); border-color: transparent; }
.calendar-day.today { border-color: var(--primary); background: #eff6ff; }
.calendar-day.has-events { background: #f0fdf4; }
.day-number { font-weight: 600; display: block; margin-bottom: 0.25rem; }
.event-chip {
    display: block;
    background: var(--success);
    color: #fff;
    padding: 0.1rem 0.3rem;
    border-radius: 3px;
    font-size: 0.7rem;
    margin-bottom: 1px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

/* 2FA */
.qr-section { text-align: center; margin: 1.5rem 0; }
.qr-code { max-width: 200px; border: 1px solid var(--border); border-radius: var(--radius); }
.secret-key { margin-top: 0.5rem; font-size: 0.85rem; color: var(--muted); }
.secret-key code { background: var(--bg); padding: 0.2rem 0.5rem; border-radius: 4px; font-size: 0.8rem; }
.steps { margin: 1rem 0 1rem 1.25rem; color: var(--muted); }
.steps li { margin-bottom: 0.25rem; }

/* Filter bar */
.filter-bar { display: flex; gap: 1rem; align-items: center; margin-bottom: 1rem; flex-wrap: wrap; }
.filter-bar label { font-size: 0.9rem; }
.filter-bar input { padding: 0.35rem 0.5rem; border: 1px solid var(--border); border-radius: var(--radius); }

.review-form textarea { width: 100%; margin-bottom: 0.5rem; padding: 0.35rem; border: 1px solid var(--border); border-radius: var(--radius); font-size: 0.85rem; }

.table-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 0.35rem;
    align-items: center;
}

.table-actions form { margin: 0; }

@media (max-width: 768px) {
    .site-header .nav-toggle { display: flex; }

    .navbar {
        top: 53px;
    }

    .navbar .nav-links {
        display: none;
        flex-direction: column;
        align-items: stretch;
        gap: 0;
        padding: 0;
        max-height: calc(100vh - 110px);
        overflow-y: auto;
        border-top: 1px solid rgba(255, 255, 255, 0.15);
        background: var(--primary);
    }

    .navbar.is-open .nav-links,
    body.nav-open .navbar .nav-links {
        display: flex;
    }

    .nav-links a {
        padding: 0.85rem 1.5rem;
        border-bottom: 1px solid rgba(255, 255, 255, 0.12);
    }

    .nav-links a:hover {
        background: rgba(255, 255, 255, 0.1);
    }

    .nav-section {
        display: block;
        padding: 1rem 1.5rem 0.35rem;
    }

    .nav-footer {
        flex-direction: column;
        align-items: stretch;
        gap: 0.75rem;
        margin-left: 0;
        padding: 1rem 1.5rem 1.25rem;
        border-top: 1px solid rgba(255, 255, 255, 0.15);
        background: var(--primary-dark);
    }

    .nav-footer .btn {
        width: 100%;
    }

    .grid-2, .stats-grid { grid-template-columns: 1fr; }
    .form-row { grid-template-columns: 1fr; }
    .calendar-day { min-height: 60px; }

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

    .tabs {
        flex-wrap: wrap;
        overflow-x: auto;
    }

    .table-responsive {
        overflow-x: auto;
        -webkit-overflow-scrolling: touch;
    }

    .container { padding: 1rem; }
}
.alert.ok { background: #dcfce7; color: #166534; border: 1px solid #bbf7d0; }
.alert.err { background: #fee2e2; color: #991b1b; border: 1px solid #fecaca; }

/* QR timbratura */
.qr-card { text-align: center; }
.qr-box { margin: 1rem auto; display: inline-block; padding: 1rem; background: #fff; border: 1px solid var(--border); border-radius: var(--radius); }
.qr-image { display: block; max-width: 100%; height: auto; }
.qr-url { word-break: break-all; margin: 0.75rem 0; color: var(--muted); }

.timbra-page { background: var(--bg); min-height: 100vh; display: flex; align-items: center; justify-content: center; padding: 1.5rem; }
.timbra-wrap { width: 100%; max-width: 420px; text-align: center; }
.timbra-logo { display: inline-block; margin-bottom: 1.5rem; padding: 0.5rem 1rem; background: var(--primary); border-radius: var(--radius); }
.timbra-logo img { height: 40px; width: auto; }
.timbra-card { background: var(--card); border-radius: 16px; padding: 2rem 1.5rem; border: 1px solid var(--border); box-shadow: 0 4px 24px rgba(0,0,0,0.06); }
.timbra-icon { font-size: 3rem; line-height: 1; margin-bottom: 1rem; }
.timbra-in .timbra-icon { color: var(--success); }
.timbra-out .timbra-icon { color: var(--primary); }
.timbra-error .timbra-icon { color: var(--danger); }
.timbra-card h1 { font-size: 1.35rem; margin-bottom: 0.5rem; }
.timbra-user { font-size: 1.1rem; font-weight: 600; margin: 0.5rem 0; }
.timbra-time { color: var(--muted); margin-bottom: 0.5rem; }
.timbra-hint { font-size: 0.85rem; margin-top: 1rem; }
.timbra-error .btn { margin-top: 1.25rem; }