/* =============================================================================
   AttendanceTracker — Main Stylesheet
   繁體中文 | Responsive | Print-ready
   ============================================================================= */

/* ── Variables ────────────────────────────────────────────────────────────── */
:root {
    --clr-primary:      #1a3a5c;
    --clr-primary-lt:   #2a5f8a;
    --clr-accent:       #e8a838;
    --clr-accent-dk:    #c48a1f;
    --clr-success:      #27ae60;
    --clr-danger:       #e74c3c;
    --clr-warning:      #f39c12;
    --clr-info:         #3498db;
    --clr-bg:           #f4f6f9;
    --clr-card:         #ffffff;
    --clr-text:         #2c3e50;
    --clr-text-light:   #7f8c8d;
    --clr-border:       #dee2e6;
    --clr-rest:         #ecf0f1;
    --clr-normal:       #d5f5e3;
    --clr-abnormal:     #fadbd8;

    --font-main:        'Segoe UI', 'Noto Sans TC', '微軟正黑體', 'Microsoft JhengHei', sans-serif;
    --font-mono:        'Consolas', 'Courier New', monospace;

    --shadow-sm:        0 2px 6px rgba(0,0,0,.08);
    --shadow-md:        0 4px 12px rgba(0,0,0,.12);
    --shadow-lg:        0 6px 24px rgba(0,0,0,.16);

    --radius:           8px;
    --radius-lg:        12px;
    --transition:       .2s ease;
}

/* ── Reset & Base ────────────────────────────────────────────────────────── */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    font-size: 16px;
    -webkit-text-size-adjust: 100%;
}

body {
    font-family: var(--font-main);
    color: var(--clr-text);
    background: var(--clr-bg);
    line-height: 1.6;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

a {
    color: var(--clr-primary-lt);
    text-decoration: none;
    transition: color var(--transition);
}
a:hover { color: var(--clr-accent-dk); }

img { max-width: 100%; }

/* ── Layout: Sidebar + Main ──────────────────────────────────────────────── */
.layout {
    display: flex;
    min-height: 100vh;
}

/* ── Sidebar ──────────────────────────────────────────────────────────────  */
.sidebar {
    width: 240px;
    background: var(--clr-primary);
    color: #fff;
    flex-shrink: 0;
    display: flex;
    flex-direction: column;
    position: fixed;
    top: 0;
    left: 0;
    height: 100vh;
    z-index: 100;
    overflow-y: auto;
    transition: transform .3s ease;
}

.sidebar__logo {
    padding: 28px 20px;
    background: rgba(0,0,0,.15);
    text-align: center;
}
.sidebar__logo h1 {
    font-size: 1.25rem;
    font-weight: 700;
    letter-spacing: .5px;
    line-height: 1.3;
}
.sidebar__logo .logo-sub {
    font-size: .75rem;
    opacity: .6;
    margin-top: 4px;
}

.sidebar__nav {
    flex: 1;
    padding: 12px 0;
    list-style: none;
}
.sidebar__nav li { margin: 2px 12px; }
.sidebar__nav a {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 10px 14px;
    color: rgba(255,255,255,.78);
    border-radius: var(--radius);
    font-size: .9rem;
    transition: background .2s, color .2s;
}
.sidebar__nav a:hover,
.sidebar__nav a.active {
    background: rgba(255,255,255,.12);
    color: #fff;
}
.sidebar__nav a.active {
    background: var(--clr-accent);
    color: #1a3a5c;
    font-weight: 600;
}
.sidebar__nav .nav-icon {
    width: 20px;
    text-align: center;
    font-size: 1rem;
}

.sidebar__footer {
    padding: 16px 20px;
    background: rgba(0,0,0,.2);
    font-size: .78rem;
    text-align: center;
    opacity: .55;
}

/* ── Main Content Area ────────────────────────────────────────────────────  */
.main-wrap {
    margin-left: 240px;
    flex: 1;
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

/* ── Top Bar ──────────────────────────────────────────────────────────────  */
.topbar {
    background: var(--clr-card);
    box-shadow: var(--shadow-sm);
    padding: 12px 28px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    position: sticky;
    top: 0;
    z-index: 50;
}
.topbar__left h2 {
    font-size: 1.2rem;
    font-weight: 600;
    color: var(--clr-primary);
}
.topbar__left .breadcrumb {
    font-size: .78rem;
    color: var(--clr-text-light);
    margin-top: 2px;
}
.topbar__right {
    display: flex;
    align-items: center;
    gap: 18px;
}
.topbar__user {
    font-size: .85rem;
    color: var(--clr-text-light);
}
.topbar__user strong { color: var(--clr-text); }

/* Hamburger (mobile) */
.hamburger {
    display: none;
    flex-direction: column;
    gap: 5px;
    cursor: pointer;
    padding: 6px;
}
.hamburger span {
    width: 24px; height: 2px;
    background: var(--clr-primary);
    border-radius: 2px;
    transition: .3s;
}

/* ── Page Content ─────────────────────────────────────────────────────────  */
.content {
    flex: 1;
    padding: 28px;
}

/* ── Cards ────────────────────────────────────────────────────────────────  */
.card {
    background: var(--clr-card);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    padding: 24px;
    margin-bottom: 20px;
}
.card__header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 18px;
    padding-bottom: 14px;
    border-bottom: 1px solid var(--clr-border);
}
.card__header h3 {
    font-size: 1.05rem;
    font-weight: 600;
    color: var(--clr-primary);
}

/* ── Buttons ──────────────────────────────────────────────────────────────  */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 8px 18px;
    border: none;
    border-radius: var(--radius);
    font-family: var(--font-main);
    font-size: .85rem;
    font-weight: 600;
    cursor: pointer;
    transition: background var(--transition), transform .1s, box-shadow .15s;
    white-space: nowrap;
}
.btn:active { transform: translateY(1px); }

.btn-primary   { background: var(--clr-primary);   color: #fff; }
.btn-primary:hover { background: var(--clr-primary-lt); }
.btn-accent    { background: var(--clr-accent);    color: #1a3a5c; }
.btn-accent:hover  { background: var(--clr-accent-dk); color: #fff; }
.btn-success   { background: var(--clr-success);   color: #fff; }
.btn-success:hover { background: #219a52; }
.btn-danger    { background: var(--clr-danger);    color: #fff; }
.btn-danger:hover  { background: #c0392b; }
.btn-outline   { background: transparent; border: 1.5px solid var(--clr-border); color: var(--clr-text); }
.btn-outline:hover { border-color: var(--clr-primary-lt); color: var(--clr-primary-lt); }
.btn-sm { padding: 5px 12px; font-size: .78rem; }
.btn-lg { padding: 11px 26px; font-size: .95rem; }

/* ── Tables ───────────────────────────────────────────────────────────────  */
.table-wrap {
    overflow-x: auto;
    border-radius: var(--radius);
    border: 1px solid var(--clr-border);
}
table {
    width: 100%;
    border-collapse: collapse;
    font-size: .85rem;
    min-width: 560px;
}
table th {
    background: var(--clr-primary);
    color: #fff;
    padding: 11px 14px;
    text-align: left;
    font-weight: 600;
    white-space: nowrap;
    position: sticky;
    top: 0;
}
table td {
    padding: 10px 14px;
    border-bottom: 1px solid var(--clr-border);
}
table tr:last-child td { border-bottom: none; }
table tbody tr:hover { background: #f0f4f8; }

/* Status badges */
.badge {
    display: inline-block;
    padding: 3px 10px;
    border-radius: 20px;
    font-size: .75rem;
    font-weight: 600;
    white-space: nowrap;
}
.badge-normal    { background: var(--clr-normal);    color: #1e8449; }
.badge-rest      { background: var(--clr-rest);      color: var(--clr-text-light); }
.badge-abnormal  { background: var(--clr-abnormal);  color: #c0392b; }
.badge-half      { background: #fef5e7;              color: #d68910; }

/* ── Forms ────────────────────────────────────────────────────────────────  */
.form-group {
    margin-bottom: 18px;
}
.form-group label {
    display: block;
    font-size: .85rem;
    font-weight: 600;
    margin-bottom: 6px;
    color: var(--clr-text);
}
.form-group label .req {
    color: var(--clr-danger);
    margin-left: 2px;
}
.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 9px 12px;
    border: 1.5px solid var(--clr-border);
    border-radius: var(--radius);
    font-family: var(--font-main);
    font-size: .85rem;
    color: var(--clr-text);
    background: #fff;
    transition: border-color var(--transition), box-shadow var(--transition);
}
.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--clr-primary-lt);
    box-shadow: 0 0 0 3px rgba(42, 95, 138, .18);
}

.form-row {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 16px;
}

/* Errors & Flash */
.alert {
    padding: 12px 18px;
    border-radius: var(--radius);
    font-size: .85rem;
    margin-bottom: 18px;
    border-left: 4px solid transparent;
}
.alert-success { background: #eafaf1; border-color: var(--clr-success); color: #1e8449; }
.alert-danger  { background: #fdedec; border-color: var(--clr-danger);  color: #c0392b; }
.alert-info    { background: #eaf2f8; border-color: var(--clr-info);    color: #2471a3; }

/* ── Checkbox list ────────────────────────────────────────────────────────  */
.checkbox-list {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
}
.checkbox-list label {
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: .82rem;
    cursor: pointer;
    padding: 5px 10px;
    border: 1px solid var(--clr-border);
    border-radius: var(--radius);
    user-select: none;
    transition: background .15s;
}
.checkbox-list label:hover { background: #eef2f7; }
.checkbox-list input[type="checkbox"] { accent-color: var(--clr-primary); width: 15px; height: 15px; }

/* ── Stat Cards (Dashboard) ──────────────────────────────────────────────  */
.stats-row {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: 16px;
    margin-bottom: 24px;
}
.stat-card {
    background: var(--clr-card);
    border-radius: var(--radius-lg);
    padding: 20px;
    box-shadow: var(--shadow-sm);
    border-left: 4px solid var(--clr-primary-lt);
}
.stat-card__value {
    font-size: 1.8rem;
    font-weight: 700;
    color: var(--clr-primary);
}
.stat-card__label {
    font-size: .78rem;
    color: var(--clr-text-light);
    margin-top: 4px;
}
.stat-card.accent   { border-left-color: var(--clr-accent); }
.stat-card.success  { border-left-color: var(--clr-success); }
.stat-card.danger   { border-left-color: var(--clr-danger); }

/* ── Login Page ───────────────────────────────────────────────────────────  */
.login-page {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--clr-primary) 0%, #2c6fad 100%);
    padding: 24px;
}
.login-box {
    background: #fff;
    border-radius: 16px;
    box-shadow: var(--shadow-lg);
    padding: 40px 36px;
    width: 100%;
    max-width: 400px;
}
.login-box__title {
    text-align: center;
    margin-bottom: 30px;
}
.login-box__title h1 {
    font-size: 1.55rem;
    color: var(--clr-primary);
    font-weight: 700;
}
.login-box__title p {
    font-size: .8rem;
    color: var(--clr-text-light);
    margin-top: 6px;
}
.login-box .btn-primary {
    width: 100%;
    justify-content: center;
    padding: 11px;
    font-size: .92rem;
    margin-top: 8px;
}

/* ── Payslip Print ────────────────────────────────────────────────────────  */
.payslip-sheet {
    background: #fff;
    max-width: 700px;
    margin: 0 auto;
    padding: 40px;
    box-shadow: var(--shadow-md);
    border-radius: var(--radius-lg);
}
.payslip-sheet__header {
    text-align: center;
    margin-bottom: 24px;
    padding-bottom: 18px;
    border-bottom: 2px solid var(--clr-primary);
}
.payslip-sheet__header h1 {
    font-size: 1.6rem;
    color: var(--clr-primary);
}
.payslip-sheet__header .subtitle {
    font-size: .85rem;
    color: var(--clr-text-light);
    margin-top: 4px;
}
.payslip-info {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 8px 24px;
    font-size: .83rem;
    margin-bottom: 20px;
}
.payslip-info .label { color: var(--clr-text-light); font-weight: 600; }
.payslip-info .value { color: var(--clr-text); }

.payslip-total {
    background: var(--clr-primary);
    color: #fff;
    border-radius: var(--radius);
    padding: 14px 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-top: 16px;
}
.payslip-total .label { font-size: .85rem; opacity: .8; }
.payslip-total .value { font-size: 1.5rem; font-weight: 700; }

/* ── QR Print Styles ──────────────────────────────────────────────────────  */
.qr-print-page {
    background: #fff;
    padding: 20px;
}
.qr-block {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    padding: 20px;
    break-inside: avoid;
    page-break-inside: avoid;
    min-height: 260px;
}
.qr-block img {
    width: 200px;
    height: 200px;
    min-width: 200px;
}
.qr-block__info {
    margin-top: 12px;
    font-size: .82rem;
    color: var(--clr-text);
}
.qr-block__info .emp-name { font-weight: 700; font-size: .92rem; color: var(--clr-primary); }
.qr-block__info .emp-pos  { color: var(--clr-text-light); margin-top: 2px; }
.qr-block__info .emp-num  { color: var(--clr-text-light); font-size: .75rem; margin-top: 2px; font-family: var(--font-mono); }

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

/* ── Utility ──────────────────────────────────────────────────────────────  */
.mt-0 { margin-top: 0; }
.mt-1 { margin-top: 8px; }
.mt-2 { margin-top: 16px; }
.mt-3 { margin-top: 24px; }
.mb-2 { margin-bottom: 16px; }
.text-right { text-align: right; }
.text-center { text-align: center; }
.text-muted { color: var(--clr-text-light); font-size: .8rem; }
.text-sm { font-size: .78rem; }
.hidden { display: none !important; }

/* ── Responsive ───────────────────────────────────────────────────────────  */
@media (max-width: 900px) {
    .sidebar { transform: translateX(-240px); }
    .sidebar.open { transform: translateX(0); }
    .main-wrap { margin-left: 0; }
    .hamburger { display: flex; }
    .content { padding: 18px; }
    .form-row { grid-template-columns: 1fr; }
    .qr-grid { grid-template-columns: 1fr; }
}

@media (max-width: 600px) {
    .stats-row { grid-template-columns: repeat(2, 1fr); }
    .topbar { padding: 10px 16px; }
    .login-box { padding: 28px 22px; }
    table { font-size: .78rem; }
    table th, table td { padding: 8px 10px; }
}

/* ============================================================================
   PRINT STYLES
   ============================================================================ */
@media print {
    /* Hide all non-print UI */
    .sidebar,
    .topbar,
    .hamburger,
    .btn-no-print,
    .no-print,
    nav,
    .sidebar__footer {
        display: none !important;
    }

    body {
        background: #fff;
        color: #000;
        font-size: 12pt;
    }

    .main-wrap {
        margin-left: 0;
    }

    .content {
        padding: 0;
    }

    /* ── QR Bulk Print Layout ── */
    .qr-print-page {
        padding: 0;
        margin: 0;
    }

    .qr-grid {
        display: grid;
        grid-template-columns: repeat(2, 1fr);
        grid-auto-rows: ~"calc((100vh - 40px) / 2)"; /* Approx half-page */
    }

    .qr-block {
        border: 1px solid #eee;
        break-inside: avoid;
        page-break-inside: avoid;
        display: flex;
        flex-direction: column;
        align-items: center;
        justify-content: center;
        min-height: 260px;
        padding: 16px;
    }

    .qr-block img {
        width: 180px;
        height: 180px;
        min-width: 180px; /* Enforce minimum QR size */
    }

    /* ── Payslip Print ── */
    .payslip-sheet {
        box-shadow: none;
        max-width: 100%;
        padding: 0;
        margin: 0;
    }

    .payslip-sheet__header {
        border-bottom: 2px solid #1a3a5c;
    }

    /* ── Page Setup ── */
    @page {
        size: A4;
        margin: 20mm;
    }

    /* Prevent tables from splitting across pages */
    table {
        break-inside: avoid;
    }

    .card {
        box-shadow: none;
        border: 1px solid #ddd;
        break-inside: avoid;
    }

    a { color: inherit; }
}