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

:root {
    --primary: #2563eb;
    --primary-dark: #1d4ed8;
    --bg: #f5f7fb;
    --card: #ffffff;
    --text: #172033;
    --muted: #6b7280;
    --border: #e5e7eb;
    --success: #16a34a;
    --danger: #dc2626;
    --warning: #d97706;
}

body {
    font-family:
        Inter,
        system-ui,
        -apple-system,
        BlinkMacSystemFont,
        "Segoe UI",
        sans-serif;

    background: var(--bg);
    color: var(--text);
    min-height: 100vh;
}

.app-header {
    background: var(--card);
    padding: 16px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 12px;

    border-bottom: 1px solid var(--border);

    position: sticky;
    top: 0;
    z-index: 20;
}

.app-header h1 {
    font-size: 18px;
}

.app-header p {
    color: var(--muted);
    font-size: 12px;
    margin-top: 3px;
}

.status {
    padding: 7px 10px;
    border-radius: 999px;
    font-size: 12px;
    font-weight: 600;
    white-space: nowrap;
}

.status.online {
    background: #dcfce7;
    color: #166534;
}

.status.offline {
    background: #fee2e2;
    color: #991b1b;
}

main {
    width: 100%;
    max-width: 760px;
    margin: auto;
    padding: 16px;
}

.page {
    display: none;
}

.page.active {
    display: block;
}

.hero-card {
    background: var(--card);
    border-radius: 24px;
    padding: 30px 20px;
    text-align: center;
    margin-bottom: 16px;
    box-shadow: 0 10px 30px rgba(0,0,0,.05);
}

.hero-icon {
    font-size: 56px;
    display: block;
    margin-bottom: 12px;
}

.hero-card h2 {
    font-size: 24px;
    margin-bottom: 10px;
}

.hero-card p {
    color: var(--muted);
    line-height: 1.6;
    margin-bottom: 25px;
}

.primary-btn,
.secondary-btn,
.small-btn {
    border: none;
    cursor: pointer;
    font: inherit;
}

.primary-btn {
    width: 100%;
    background: var(--primary);
    color: white;
    padding: 15px;
    border-radius: 14px;
    font-weight: 700;
}

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

.secondary-btn {
    width: 100%;
    background: #eff6ff;
    color: var(--primary);
    padding: 14px;
    border-radius: 14px;
    font-weight: 700;
    margin-top: 10px;
}

.stats {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 10px;
}

.stat-card {
    background: white;
    padding: 15px 8px;
    border-radius: 16px;
    text-align: center;
}

.stat-card strong {
    display: block;
    font-size: 22px;
}

.stat-card span {
    font-size: 11px;
    color: var(--muted);
}

.page-title {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 16px;
}

.page-title h2 {
    font-size: 20px;
}

.page-title p {
    color: var(--muted);
    font-size: 12px;
    margin-top: 3px;
}

.backBtn {
    border: none;
    background: white;
    border-radius: 12px;
    width: 42px;
    height: 42px;
    font-size: 22px;
    cursor: pointer;
}

.card {
    background: white;
    padding: 18px;
    border-radius: 18px;
    margin-bottom: 14px;
    box-shadow: 0 5px 20px rgba(0,0,0,.03);
}

.card h3 {
    font-size: 16px;
    margin-bottom: 16px;
}

label {
    display: block;
    font-size: 14px;
    font-weight: 600;
    margin-bottom: 15px;
}

input[type="text"],
input[type="number"],
select,
textarea {
    width: 100%;
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 13px;
    margin-top: 7px;
    font: inherit;
    background: #fff;
    outline: none;
}

textarea {
    resize: vertical;
}

input:focus,
select:focus,
textarea:focus {
    border-color: var(--primary);
}

.section-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.small-btn {
    background: #eff6ff;
    color: var(--primary);
    padding: 9px 12px;
    border-radius: 10px;
    font-size: 12px;
    font-weight: 700;
}

.info-box {
    background: #f8fafc;
    border: 1px dashed var(--border);
    border-radius: 12px;
    padding: 12px;
    color: var(--muted);
    font-size: 13px;
}

.radio-option,
.check-option {
    display: flex;
    align-items: center;
    gap: 10px;

    background: #f8fafc;
    border: 1px solid var(--border);
    padding: 13px;
    border-radius: 12px;
    margin-bottom: 8px;
}

.radio-option input,
.check-option input {
    width: 18px;
    height: 18px;
}

.question {
    font-size: 14px;
    font-weight: 600;
    margin-bottom: 10px;
}

.helper {
    color: var(--muted);
    font-size: 12px;
    margin-bottom: 14px;
}

.rating-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 15px;
    padding: 10px 0;
    border-bottom: 1px solid #f1f5f9;
}

.rating-row input {
    width: 80px;
    margin: 0;
}

.big-rating {
    text-align: center;
    font-size: 30px;
    margin-top: 10px;
}

input[type="range"] {
    width: 100%;
    margin-top: 12px;
}

.photo-preview {
    width: 100%;
    max-height: 300px;
    object-fit: cover;
    border-radius: 14px;
    margin-top: 12px;
}

.camera-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-bottom: 12px;
}

.camera-preview {
    width: 100%;
    aspect-ratio: 4 / 3;
    object-fit: cover;
    border-radius: 14px;
    margin-bottom: 12px;
    background: #111827;
}

.submit-btn {
    margin-bottom: 30px;
}

.toast {
    position: fixed;
    bottom: 20px;
    left: 50%;
    transform: translateX(-50%) translateY(100px);

    background: #111827;
    color: white;

    padding: 13px 18px;
    border-radius: 14px;

    font-size: 13px;
    z-index: 100;

    transition: .3s;
    opacity: 0;

    max-width: calc(100% - 32px);
    text-align: center;
}

.toast.show {
    transform: translateX(-50%) translateY(0);
    opacity: 1;
}

.history-card {
    background: white;
    padding: 16px;
    border-radius: 16px;
    margin-bottom: 10px;
}

.history-top {
    display: flex;
    justify-content: space-between;
    gap: 10px;
}

.history-id {
    font-weight: 700;
}

.history-time {
    color: var(--muted);
    font-size: 12px;
    margin-top: 5px;
}

.sync-badge {
    padding: 5px 8px;
    border-radius: 999px;
    font-size: 11px;
    font-weight: 700;
}

.sync-badge.synced {
    background: #dcfce7;
    color: #166534;
}

.sync-badge.pending {
    background: #fef3c7;
    color: #92400e;
}

@media (min-width: 700px) {

    main {
        padding: 30px;
    }

    .hero-card {
        padding: 45px;
    }

    .card {
        padding: 24px;
    }

}