* {
    box-sizing: border-box;
}

:root {
    --bg: #f4f7fb;
    --panel: #ffffff;
    --text: #16202b;
    --muted: #5b6b7b;
    --line: #d7e0ea;
    --primary: #1f5fae;
    --primary-strong: #174a87;
    --danger: #b42318;
    --success: #0b7a38;
    --warn: #a15c00;
    --shadow: 0 10px 26px rgba(22, 32, 43, 0.08);
    --radius: 18px;
}

body {
    margin: 0;
    font-family: "Segoe UI", "Hiragino Sans", "Yu Gothic UI", sans-serif;
    background: var(--bg);
    color: var(--text);
}

a {
    color: inherit;
    text-decoration: none;
}

h1, h2, h3, p {
    margin-top: 0;
}

code {
    background: #edf3fb;
    padding: 0.1rem 0.35rem;
    border-radius: 6px;
}

.topbar {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    gap: 16px;
    padding: 24px;
    background: var(--panel);
    border-bottom: 1px solid var(--line);
    position: sticky;
    top: 0;
    z-index: 20;
}

.topbar-actions {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
}

.auth-layout {
    min-height: 100vh;
    display: grid;
    place-items: center;
    padding: 24px;
}

.auth-card {
    width: min(100%, 460px);
}

.page-grid {
    display: grid;
    grid-template-columns: 1.1fr 1fr;
    gap: 20px;
    padding: 24px;
}

.admin-grid {
    grid-template-columns: repeat(3, 1fr);
}

.kiosk-layout {
    padding: 24px;
    display: grid;
    grid-template-columns: 1.15fr 0.85fr;
    gap: 20px;
}

.card {
    background: var(--panel);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    padding: 22px;
    border: 1px solid rgba(215, 224, 234, 0.8);
}

.stack-form {
    display: grid;
    gap: 14px;
}

.stack-form label,
.block-margin {
    display: grid;
    gap: 6px;
}

input, textarea, select {
    width: 100%;
    padding: 12px 14px;
    border-radius: 12px;
    border: 1px solid var(--line);
    background: #fff;
    color: var(--text);
    font: inherit;
}

textarea {
    resize: vertical;
}

.two-col {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 12px;
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    min-height: 42px;
    padding: 10px 16px;
    border: 0;
    border-radius: 12px;
    background: #eaf0f7;
    color: var(--text);
    cursor: pointer;
    font: inherit;
    font-weight: 600;
}

.btn:hover {
    filter: brightness(0.98);
}

.btn.primary {
    background: var(--primary);
    color: #fff;
}

.btn.primary:hover {
    background: var(--primary-strong);
}

.btn.danger {
    background: #fbe7e5;
    color: var(--danger);
}

.btn.large {
    min-height: 72px;
    font-size: 1.15rem;
    padding: 16px 22px;
}

.alert {
    padding: 12px 14px;
    border-radius: 12px;
    border: 1px solid var(--line);
    background: #f8fbff;
    color: var(--text);
}

.alert.success {
    background: #edf9f1;
    color: var(--success);
    border-color: #b8e2c4;
}

.alert.error {
    background: #fff1f0;
    color: var(--danger);
    border-color: #f0c1bc;
}

.alert.info {
    background: #eef5fd;
    color: var(--primary);
    border-color: #bed4ef;
}

.alert.warn {
    background: #fff4e5;
    color: var(--warn);
    border-color: #f3d29c;
}

.hidden {
    display: none !important;
}

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

.small-note {
    font-size: 0.92rem;
    line-height: 1.65;
    margin-top: 12px;
}

.demo-box {
    margin-top: 16px;
    padding: 14px;
    border-radius: 14px;
    background: #f8fafc;
    border: 1px dashed var(--line);
}

.stack-list {
    display: grid;
    gap: 12px;
}

.list-item {
    border: 1px solid var(--line);
    border-radius: 14px;
    padding: 14px;
    background: #fcfdff;
}

.list-item-header {
    display: flex;
    justify-content: space-between;
    gap: 12px;
    align-items: start;
}

.badge {
    display: inline-block;
    padding: 6px 10px;
    border-radius: 999px;
    background: #edf3fb;
    color: var(--primary);
    font-size: 0.85rem;
    font-weight: 700;
}

.badge.pending { background: #fff4e5; color: var(--warn); }
.badge.approved { background: #edf9f1; color: var(--success); }
.badge.rejected, .badge.flagged { background: #fff1f0; color: var(--danger); }
.badge.checked_out { background: #eef5fd; color: var(--primary); }
.badge.return_declared { background: #f2ecff; color: #6a35c3; }
.badge.completed { background: #edf9f1; color: var(--success); }

.scanner-shell {
    margin-top: 12px;
    border: 1px dashed var(--line);
    border-radius: 16px;
    min-height: 320px;
    overflow: hidden;
    background: #f7fbff;
}

#reader {
    width: 100%;
}

.kiosk-action-row,
.inline-row {
    display: flex;
    gap: 12px;
    flex-wrap: wrap;
}

.list-item-actions {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
    margin-top: 12px;
}

.pill-line {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
    margin-top: 8px;
}

.pill {
    display: inline-block;
    padding: 4px 8px;
    border-radius: 999px;
    background: #eef3f8;
    color: var(--muted);
    font-size: 0.82rem;
}

.kiosk-topbar {
    background: linear-gradient(90deg, #f7fbff, #ffffff);
}

.auth-page {
    background: radial-gradient(circle at top, #eef5ff, #f4f7fb 50%);
}

@media (max-width: 980px) {
    .page-grid,
    .admin-grid,
    .kiosk-layout {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 640px) {
    .topbar {
        padding: 18px;
    }

    .page-grid,
    .kiosk-layout {
        padding: 18px;
    }

    .two-col {
        grid-template-columns: 1fr;
    }

    .btn.large {
        width: 100%;
    }
}