:root {
    --bg: #f7faff;
    --card: #ffffff;
    --text: #172033;
    --muted: #64748b;
    --primary: #2563eb;
    --primary-dark: #1d4ed8;
    --primary-soft: #eef5ff;
    --accent: #0ea5e9;
    --border: #c7d8f6;
    --field-bg: #fbfdff;
    --success-bg: #ecfdf5;
    --success-border: #86efac;
    --success-text: #166534;
    --error-bg: #fff1f2;
    --error-border: #fda4af;
    --error-text: #9f1239;
}
* { box-sizing: border-box; }
body {
    margin: 0;
    font-family: Arial, Helvetica, sans-serif;
    color: var(--text);
    background:
        radial-gradient(circle at top left, rgba(37,99,235,.11), transparent 34%),
        radial-gradient(circle at bottom right, rgba(14,165,233,.10), transparent 30%),
        var(--bg);
}
.page {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 32px 16px;
}
.card {
    width: min(820px, 100%);
    background: var(--card);
    padding: 34px;
    border: 1px solid #e7eefb;
    border-top: 5px solid var(--primary);
    border-radius: 18px;
    box-shadow: 0 20px 45px rgba(15, 23, 42, .09);
}
h1 {
    margin: 0 0 26px;
    font-size: clamp(26px, 4vw, 38px);
    text-align: center;
    color: #1e3a8a;
}
.row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 18px;
}
label span {
    display: block;
    font-weight: 700;
    margin: 0 0 8px;
    margin-top: 30px;
    color: #334155;
}
input, textarea {
    width: 100%;
    border: 1px solid var(--border);
    border-left: 4px solid var(--accent);
    border-radius: 11px;
    padding: 13px 14px;
    font: inherit;
    color: var(--text);
    background: var(--field-bg);
    transition: border-color .15s ease, box-shadow .15s ease, background .15s ease;
}
input:focus, textarea:focus {
    outline: 0;
    border-color: var(--primary);
    border-left-color: var(--primary);
    background: #ffffff;
    box-shadow: 0 0 0 4px rgba(37, 99, 235, .14);
}
textarea {
    resize: vertical;
    margin-top: 18px;
    min-height: 190px;
}
.actions {
    display: flex;
    gap: 14px;
    align-items: center;
    margin-top: 20px;
}
button, .file-button {
    flex: 1;
    border-radius: 11px;
    padding: 14px 18px;
    font: inherit;
    font-weight: 700;
    text-align: center;
    cursor: pointer;
    transition: transform .12s ease, box-shadow .12s ease, background .12s ease;
}
button {
    border: 1px solid var(--primary);
    background: linear-gradient(180deg, #3b82f6, var(--primary));
    color: #fff;
    box-shadow: 0 8px 18px rgba(37, 99, 235, .22);
}
button:hover { background: var(--primary-dark); }
button:active, .file-button:active { transform: translateY(1px); }
.file-button {
    color: #1e40af;
    background: var(--primary-soft);
    border: 1px solid #bcd2ff;
}
.file-button:hover {
    background: #e2ecff;
    box-shadow: 0 6px 14px rgba(37, 99, 235, .10);
}
.file-button input {
    position: absolute;
    width: 1px;
    height: 1px;
    opacity: 0;
    pointer-events: none;
}
.hint {
    margin: 12px 0 0;
    color: var(--muted);
    font-size: 14px;
}
.alert {
    padding: 14px 16px;
    border-radius: 11px;
    margin-bottom: 18px;
    border: 1px solid transparent;
}
.alert ul { margin: 8px 0 0; padding-left: 20px; }
.success { background: var(--success-bg); border-color: var(--success-border); color: var(--success-text); }
.error { background: var(--error-bg); border-color: var(--error-border); color: var(--error-text); }
@media (max-width: 680px) {
    .page { padding: 18px 12px; }
    .card { padding: 24px; border-radius: 14px; }
    .row { grid-template-columns: 1fr; }
    .actions { flex-direction: column; }
    button, .file-button { width: 100%; }
}
.ticket-label {
    display: block;
    margin-top: 30px;
}