/* ===== Design tokens ===== */
:root {
    --color-bg: #f7f5fb;
    --color-surface: #ffffff;
    --color-primary: #7c3aed;
    --color-primary-dark: #6d28d9;
    --color-primary-soft: #f1e9fe;
    --color-accent: #ec4899;
    --color-text: #1f1b2e;
    --color-text-muted: #6b6478;
    --color-border: #e6e1f2;
    --color-danger: #dc2626;
    --color-danger-soft: #fde8e8;
    --color-success: #16a34a;
    --color-success-soft: #e7f8ee;
    --radius-sm: 8px;
    --radius-md: 14px;
    --radius-lg: 20px;
    --shadow-sm: 0 1px 2px rgba(31, 27, 46, 0.06), 0 1px 3px rgba(31, 27, 46, 0.08);
    --shadow-md: 0 8px 24px rgba(31, 27, 46, 0.10);
    --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
}

/* ===== Base ===== */
* {
    box-sizing: border-box;
}

html, body {
    margin: 0;
    padding: 0;
}

body {
    background: var(--color-bg);
    background-image: radial-gradient(circle at top right, rgba(124, 58, 237, 0.06), transparent 40%),
        radial-gradient(circle at bottom left, rgba(236, 72, 153, 0.05), transparent 40%);
    background-attachment: fixed;
    color: var(--color-text);
    font-family: var(--font-sans);
    line-height: 1.55;
    -webkit-font-smoothing: antialiased;
}

h1, h2, h3 {
    font-weight: 700;
    line-height: 1.25;
    margin: 0 0 0.6em;
}

h1 {
    font-size: 1.85rem;
    letter-spacing: -0.02em;
}

h1:focus {
    outline: none;
}

h2 {
    font-size: 1.3rem;
    margin-top: 2em;
}

p {
    color: var(--color-text-muted);
}

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

    a:hover {
        text-decoration: underline;
    }

/* ===== Page shell ===== */
.page {
    max-width: 960px;
    margin: 0 auto;
    padding: 2rem 1.25rem 4rem;
}

/* ===== Top navigation ===== */
.topbar {
    display: flex;
    align-items: center;
    gap: 1.25rem;
    padding: 0.85rem 1.5rem;
    background: var(--color-surface);
    border-bottom: 1px solid var(--color-border);
    box-shadow: var(--shadow-sm);
    position: sticky;
    top: 0;
    z-index: 10;
    flex-wrap: wrap;
}

.topbar-brand {
    font-weight: 800;
    font-size: 1.15rem;
    background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
    letter-spacing: -0.02em;
}

    .topbar-brand:hover {
        text-decoration: none;
        opacity: 0.85;
    }

.topbar-nav {
    display: flex;
    align-items: center;
    gap: 0.25rem;
    flex: 1;
}

    .topbar-nav a {
        color: var(--color-text-muted);
        font-weight: 600;
        font-size: 0.92rem;
        padding: 0.45rem 0.75rem;
        border-radius: var(--radius-sm);
    }

        .topbar-nav a:hover {
            background: var(--color-primary-soft);
            color: var(--color-primary-dark);
            text-decoration: none;
        }

.topbar-user {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-size: 0.88rem;
    color: var(--color-text-muted);
}

.logout-form {
    display: inline-flex;
    max-width: none;
    margin: 0;
}

    .logout-form button {
        padding: 0.4rem 0.85rem;
        font-size: 0.85rem;
    }

/* ===== Buttons ===== */
button, .btn {
    font-family: inherit;
    font-size: 0.92rem;
    font-weight: 600;
    padding: 0.55rem 1.1rem;
    border-radius: var(--radius-sm);
    border: 1px solid transparent;
    background: var(--color-primary);
    color: #fff;
    cursor: pointer;
    box-shadow: var(--shadow-sm);
    transition: transform 0.06s ease, box-shadow 0.15s ease, background 0.15s ease;
}

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

    button:active, .btn:active {
        transform: translateY(1px);
    }

    button:disabled {
        opacity: 0.55;
        cursor: not-allowed;
    }

.btn-secondary {
    background: var(--color-surface);
    color: var(--color-text);
    border-color: var(--color-border);
    box-shadow: none;
}

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

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

    .btn-danger:hover {
        background: #b91c1c;
    }

/* ===== Forms ===== */
form {
    display: flex;
    flex-direction: column;
    gap: 0.9rem;
    max-width: 480px;
}

form > div {
    display: flex;
    flex-direction: column;
    gap: 0.3rem;
}

/* label оборачивает и текст, и сам контрол (см. Upload.razor/Admins.razor) —
   блочная раскладка даёт предсказуемый порядок "текст сверху, контрол снизу"
   без конфликтов с flex-контекстом формы. */
label {
    display: block;
    font-weight: 600;
    font-size: 0.88rem;
    color: var(--color-text);
    margin-bottom: 0.3rem;
}

input, textarea, select {
    display: block;
    width: 100%;
    font-family: inherit;
    font-size: 0.95rem;
    padding: 0.6rem 0.75rem;
    border-radius: var(--radius-sm);
    border: 1px solid var(--color-border);
    background: var(--color-surface);
    color: var(--color-text);
    margin-top: 0.3rem;
}

    input:focus, textarea:focus, select:focus {
        outline: none;
        border-color: var(--color-primary);
        box-shadow: 0 0 0 3px var(--color-primary-soft);
    }

input[type="checkbox"] {
    display: inline-block;
    width: auto;
    margin: 0 0.4rem 0 0;
    vertical-align: middle;
}

textarea {
    resize: vertical;
    min-height: 4.5rem;
}

form button[type="submit"] {
    align-self: flex-start;
    margin-top: 0.3rem;
}

/* ===== Cards ===== */
.card {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    padding: 1.75rem;
    margin-bottom: 1.5rem;
}

/* ===== Tables ===== */
.table-scroll {
    overflow-x: auto;
    margin-bottom: 1.5rem;
}

    .table-scroll table {
        margin-bottom: 0;
    }

table {
    width: 100%;
    border-collapse: collapse;
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    margin-bottom: 1.5rem;
}

th, td {
    text-align: left;
    padding: 0.75rem 1rem;
    font-size: 0.9rem;
    white-space: nowrap;
}

th {
    background: var(--color-primary-soft);
    color: var(--color-primary-dark);
    font-weight: 700;
    font-size: 0.78rem;
    text-transform: uppercase;
    letter-spacing: 0.04em;
}

tbody tr {
    border-top: 1px solid var(--color-border);
}

    tbody tr:hover {
        background: rgba(124, 58, 237, 0.03);
    }

/* ===== Badges ===== */
.badge {
    display: inline-block;
    padding: 0.2rem 0.65rem;
    border-radius: 999px;
    font-size: 0.78rem;
    font-weight: 700;
}

.badge-success {
    background: var(--color-success-soft);
    color: var(--color-success);
}

.badge-muted {
    background: #f1eef7;
    color: var(--color-text-muted);
}

.badge-danger {
    background: var(--color-danger-soft);
    color: var(--color-danger);
}

.event-link img {
    display: block;
    margin: 0.75rem 0;
    border-radius: var(--radius-sm);
    border: 1px solid var(--color-border);
}

/* ===== Messages ===== */
.success {
    color: var(--color-success);
    font-weight: 600;
}

.error {
    color: var(--color-danger);
    font-weight: 600;
}

/* ===== Auth pages ===== */
.auth-card {
    max-width: 400px;
    margin: 3rem auto;
}

    .auth-card .card form {
        max-width: none;
    }

    .auth-card h1 {
        font-size: 1.5rem;
        text-align: center;
    }

    .auth-card > .card > p {
        text-align: center;
        margin-top: 0;
    }

/* ===== Guest-facing pages ===== */
.guest-page {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 1.5rem;
}

.guest-card {
    width: 100%;
    max-width: 420px;
    background: var(--color-surface);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    padding: 2rem 1.75rem;
    text-align: center;
}

    .guest-card h1 {
        font-size: 1.5rem;
    }

    .guest-card form {
        text-align: left;
        margin: 1.5rem auto 0;
    }

    .guest-card button[type="submit"] {
        align-self: stretch;
        padding: 0.75rem;
        font-size: 1rem;
    }

/* ===== Moderation queue ===== */
.moderation-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
    gap: 1rem;
    margin-top: 1rem;
}

.moderation-item img {
    width: 100%;
    aspect-ratio: 4 / 3;
    object-fit: cover;
    border-radius: var(--radius-sm);
    margin-bottom: 0.5rem;
}

.moderation-select {
    display: block;
    font-weight: 400;
    font-size: 0.8rem;
    color: var(--color-text-muted);
    margin-bottom: 0.5rem;
}

    .moderation-select input {
        display: inline-block;
        width: auto;
        margin: 0 0.35rem 0 0;
    }

.moderation-meta {
    font-size: 0.78rem;
    color: var(--color-text-muted);
}

.moderation-actions {
    display: flex;
    gap: 0.5rem;
    margin-top: 0.5rem;
}

.event-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 0.6rem;
    margin: 0.75rem 0 1.25rem;
}

    .event-actions .btn,
    .event-actions .btn:hover {
        text-decoration: none;
    }

/* ===== Background picker ===== */
.background-picker {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(48px, 1fr));
    gap: 0.5rem;
    max-width: 480px;
    margin-top: 0.3rem;
}

.background-swatch {
    width: 100%;
    aspect-ratio: 1;
    border-radius: var(--radius-sm);
    border: 2px solid transparent;
    box-shadow: var(--shadow-sm);
    padding: 0;
    cursor: pointer;
}

    .background-swatch:hover {
        transform: scale(1.06);
    }

.background-swatch-selected {
    border-color: var(--color-text);
    box-shadow: 0 0 0 2px var(--color-surface), 0 0 0 4px var(--color-primary);
}

/* ===== QR selection & print page ===== */
.qr-select-block {
    max-width: 480px;
    margin-top: 1.4rem;
    padding-top: 1.4rem;
    border-top: 1px solid var(--color-border);
}

.qr-select-toggle {
    display: flex;
    align-items: center;
    gap: 0.4rem;
    margin: 0.6rem 0 0;
    font-weight: 500;
    font-size: 0.85rem;
    cursor: pointer;
}

.qr-print-launch {
    margin-top: 1rem;
}

.qr-print-row {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: center;
    gap: 2rem;
    min-height: 100vh;
    padding: 2.5rem 1.5rem;
}

.qr-print-page {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 1.25rem;
    text-align: center;
}

.qr-print-title {
    font-size: clamp(1.1rem, 2.5vw, 2.5rem);
    margin: 0;
}

.qr-print-image {
    width: min(var(--qr-size, 60vw), 60vh);
    height: min(var(--qr-size, 60vw), 60vh);
    max-width: 100%;
    border-radius: var(--radius-md);
    image-rendering: pixelated;
}

@media print {
    .qr-print-row {
        display: block;
        min-height: 0;
        padding: 0;
    }

    .qr-print-page {
        min-height: 0;
        height: auto;
        padding: 0.5in 0;
        page-break-after: always;
        page-break-inside: avoid;
    }

    .qr-print-page:last-of-type {
        page-break-after: auto;
    }

    .qr-print-image {
        width: 6in;
        height: 6in;
        max-width: none;
    }
}

/* ===== Canvas editor ===== */
.layer-toolbar {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-top: 1rem;
}

.canvas-editor-wrap {
    max-width: 100%;
    overflow-x: auto;
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    padding: 1rem;
    margin-top: 1rem;
}

/* ===== Public collage page ===== */
.public-page {
    max-width: 1400px;
    margin: 0 auto;
    padding: 2rem 1.25rem 4rem;
}

.public-header {
    text-align: center;
    margin-bottom: 1.75rem;
}

    .public-header h1 {
        font-size: 1.9rem;
    }

.collage-canvas {
    position: relative;
    width: 100%;
    background: var(--color-surface);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    overflow: hidden;
}

/* Фото + подпись — один блок; transform (поворот) применяется здесь, ко всему блоку сразу,
   поэтому подпись всегда наклонена вместе со своим фото. */
.collage-tile {
    position: absolute;
    display: flex;
    flex-direction: column;
}

.collage-photo-frame {
    width: 100%;
    border-radius: 4px;
    overflow: hidden;
    box-shadow: 0 2px 8px rgba(31, 27, 46, 0.18);
    transition: box-shadow 0.15s ease, filter 0.15s ease;
}

    .collage-photo-frame:hover {
        box-shadow: 0 4px 16px rgba(31, 27, 46, 0.3);
        filter: brightness(1.03);
    }

.collage-photo {
    display: block;
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.collage-caption {
    margin-top: 3px;
    padding: 0.2rem 0.4rem;
    background: var(--color-surface);
    color: var(--color-text);
    border-radius: 4px;
    box-shadow: var(--shadow-sm);
    font-size: 0.72rem;
    line-height: 1.25;
    text-align: center;
    overflow: hidden;
    text-overflow: ellipsis;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    box-sizing: border-box;
}

/* ===== Framework plumbing (не трогать без необходимости) ===== */
.valid.modified:not([type=checkbox]) {
    outline: 1px solid #26b050;
}

.invalid {
    outline: 1px solid #e50000;
}

.validation-message {
    color: #e50000;
}

.blazor-error-boundary {
    background: url(data:image/svg+xml;base64,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) no-repeat 1rem/1.8rem, #b32121;
    padding: 1rem 1rem 1rem 3.7rem;
    color: white;
}

    .blazor-error-boundary::after {
        content: "An error has occurred."
    }

.darker-border-checkbox.form-check-input {
    border-color: #929292;
}

.form-floating > .form-control-plaintext::placeholder, .form-floating > .form-control::placeholder {
    color: var(--bs-secondary-color);
    text-align: end;
}

.form-floating > .form-control-plaintext:focus::placeholder, .form-floating > .form-control:focus::placeholder {
    text-align: start;
}

#blazor-error-ui {
    background: lightyellow;
    bottom: 0;
    box-shadow: 0 -1px 2px rgba(0, 0, 0, 0.2);
    display: none;
    left: 0;
    padding: 0.6rem 1.25rem 0.7rem 1.25rem;
    position: fixed;
    width: 100%;
    z-index: 1000;
}

    #blazor-error-ui .dismiss {
        cursor: pointer;
        position: absolute;
        right: 0.75rem;
        top: 0.5rem;
    }