* {
    box-sizing: border-box;
}

:root {
    --sign-bg-a: #eef4ff;
    --sign-bg-b: #f7efff;
    --sign-primary: #2563eb;
    --sign-primary-dark: #1d4ed8;
    --sign-accent: #7c3aed;
    --sign-text: #0f172a;
    --sign-muted: #64748b;
    --sign-border: rgba(148, 163, 184, 0.28);
    --sign-card: rgba(255, 255, 255, 0.88);
}

body.sign-shell {
    min-height: 100vh;
    margin: 0;
    padding: 32px 16px;
    color: var(--sign-text);
    background:
        radial-gradient(circle at top left, rgba(37, 99, 235, 0.22), transparent 34rem),
        radial-gradient(circle at bottom right, rgba(124, 58, 237, 0.2), transparent 30rem),
        linear-gradient(135deg, var(--sign-bg-a), var(--sign-bg-b));
    display: flex;
    align-items: center;
    justify-content: center;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

.sign-card {
    width: min(100%, 560px);
    overflow: hidden;
    border: 1px solid var(--sign-border);
    border-radius: 28px;
    background: var(--sign-card);
    box-shadow: 0 24px 80px rgba(15, 23, 42, 0.16);
    backdrop-filter: blur(18px);
}

.sign-card-wide {
    width: min(100%, 680px);
}

.sign-hero {
    padding: 34px 34px 24px;
    color: #fff;
    background:
        linear-gradient(135deg, rgba(37, 99, 235, 0.96), rgba(124, 58, 237, 0.92)),
        radial-gradient(circle at 20% 20%, rgba(255, 255, 255, 0.32), transparent 12rem);
}

.sign-hero-warning {
    background: linear-gradient(135deg, #f97316, #d97706);
}

.sign-hero-success {
    background: linear-gradient(135deg, #10b981, #059669);
}

.sign-kicker {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 14px;
    padding: 6px 12px;
    border-radius: 999px;
    background: rgba(255, 255, 255, 0.18);
    font-size: 13px;
    font-weight: 700;
    letter-spacing: 0.04em;
}

.sign-hero h1 {
    margin: 0;
    font-size: clamp(26px, 7vw, 36px);
    font-weight: 800;
    letter-spacing: -0.04em;
}

.sign-hero p {
    margin: 10px 0 0;
    color: rgba(255, 255, 255, 0.86);
    font-size: 15px;
}

.sign-body {
    padding: 30px 34px 34px;
}

.form-label {
    color: #334155;
    font-weight: 700;
}

.form-control,
.form-select,
textarea.form-control {
    min-height: 48px;
    border: 1px solid #dbe3ef;
    border-radius: 14px;
    background: rgba(248, 250, 252, 0.78);
    color: var(--sign-text);
}

.form-control:focus,
.form-select:focus {
    border-color: rgba(37, 99, 235, 0.62);
    box-shadow: 0 0 0 4px rgba(37, 99, 235, 0.12);
}

.form-text,
.text-muted {
    color: var(--sign-muted) !important;
}

.btn {
    border-radius: 14px;
    font-weight: 800;
}

.btn-primary {
    border: 0;
    background: linear-gradient(135deg, var(--sign-primary), var(--sign-accent));
    box-shadow: 0 12px 28px rgba(37, 99, 235, 0.24);
}

.btn-primary:hover {
    background: linear-gradient(135deg, var(--sign-primary-dark), #6d28d9);
    transform: translateY(-1px);
}

.btn-warning {
    border: 0;
    color: #fff;
    background: linear-gradient(135deg, #f97316, #d97706);
    box-shadow: 0 12px 28px rgba(249, 115, 22, 0.22);
}

.btn-warning:hover {
    color: #fff;
    transform: translateY(-1px);
}

.alert,
.review-info,
.status-link {
    border: 1px solid var(--sign-border);
    border-radius: 18px;
}

.review-info,
.status-link {
    padding: 18px;
    background: rgba(248, 250, 252, 0.84);
}

.review-info p {
    margin: 8px 0;
    color: #475569;
    overflow-wrap: anywhere;
}

.status-link {
    background: #fff7ed;
    border-style: dashed;
    word-break: break-all;
    font-size: 13px;
}

.success-icon,
.status-icon {
    width: 64px;
    height: 64px;
    margin: 0 auto 20px;
    display: grid;
    place-items: center;
    border-radius: 22px;
    color: #fff;
    background: linear-gradient(135deg, #10b981, #059669);
    box-shadow: 0 16px 34px rgba(16, 185, 129, 0.24);
}

.success-icon svg,
.status-icon svg {
    width: 32px;
    height: 32px;
    fill: currentColor;
}

.status-badge {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 9px 18px;
    border-radius: 999px;
    font-weight: 800;
}

.status-0 { background: #fef3c7; color: #92400e; }
.status-1 { background: #dcfce7; color: #166534; }
.status-2 { background: #fee2e2; color: #991b1b; }

.sign-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    justify-content: center;
}

@media (max-width: 575.98px) {
    body.sign-shell {
        align-items: flex-start;
        padding: 12px;
    }

    .sign-card {
        border-radius: 22px;
    }

    .sign-hero,
    .sign-body {
        padding: 24px 20px;
    }

    .btn,
    .form-control,
    .form-select {
        min-height: 50px;
    }

    .sign-actions .btn {
        width: 100%;
    }
}