/* ============================================================
   DEMO REQUEST FORM (server-side submission)
   ============================================================ */
.demo-layout {
    display: grid;
    grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr);
    gap: 4rem;
    align-items: start;
    max-width: 1080px;
    margin: 0 auto;
}

.demo-intro h2 {
    font-size: clamp(1.75rem, 3.2vw, 2.4rem);
    font-weight: 700;
    color: var(--white);
    letter-spacing: -0.025em;
    line-height: 1.15;
    margin-bottom: 1rem;
}

.demo-lede {
    color: var(--text-secondary);
    font-size: 1rem;
    line-height: 1.7;
    margin-bottom: 2rem;
}

.demo-steps {
    list-style: none;
    margin: 0 0 2rem;
    padding: 0;
    display: flex;
    flex-direction: column;
    gap: 1.25rem;
}

.demo-steps li {
    display: flex;
    gap: 0.9rem;
    align-items: flex-start;
}

.demo-step-num {
    flex: 0 0 auto;
    width: 1.75rem;
    height: 1.75rem;
    border-radius: 50%;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-family: var(--font-mono);
    font-size: 0.75rem;
    color: var(--blue-light);
    border: 1px solid rgba(59, 130, 246, 0.35);
    background: var(--blue-subtle);
}

.demo-steps strong {
    display: block;
    color: var(--text-primary);
    font-size: 0.95rem;
    font-weight: 600;
    margin-bottom: 0.2rem;
}

.demo-steps p {
    color: var(--text-secondary);
    font-size: 0.88rem;
    line-height: 1.6;
    margin: 0;
}

.demo-direct {
    font-size: 0.88rem;
    color: var(--text-muted);
}

.demo-direct a {
    color: var(--blue-light);
    font-weight: 500;
}

.demo-card {
    background: rgba(255, 255, 255, 0.025);
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: var(--radius-xl);
    padding: 2rem;
    box-shadow: 0 24px 60px rgba(0, 0, 0, 0.35);
}

.demo-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem 1rem;
}

.demo-span {
    grid-column: 1 / -1;
}

.demo-field label {
    display: flex;
    align-items: baseline;
    gap: 0.35rem;
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 0.4rem;
    letter-spacing: 0.01em;
}

.demo-field label span[aria-hidden] {
    color: var(--blue-light);
}

.demo-optional {
    font-weight: 400;
    color: var(--text-muted);
    font-size: 0.75rem;
}

.demo-form input[type="text"],
.demo-form input[type="email"],
.demo-form select,
.demo-form textarea {
    width: 100%;
    padding: 0.75rem 0.95rem;
    background: rgba(255, 255, 255, 0.035);
    border: 1px solid rgba(255, 255, 255, 0.12);
    border-radius: var(--radius-md);
    color: var(--text-primary);
    font: inherit;
    font-size: 0.92rem;
    line-height: 1.4;
    outline: none;
    transition: border-color 0.2s ease, box-shadow 0.2s ease, background 0.2s ease;
}

.demo-form select {
    appearance: none;
    -webkit-appearance: none;
    padding-right: 2.25rem;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath d='M1 1l5 5 5-5' fill='none' stroke='%2394a3b8' stroke-width='1.6' stroke-linecap='round'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 0.9rem center;
    cursor: pointer;
}

.demo-form select option {
    background: #111827;
    color: #f1f5f9;
}

.demo-form textarea {
    resize: vertical;
    min-height: 110px;
}

.demo-form textarea::placeholder {
    color: var(--text-muted);
}

.demo-form input:focus,
.demo-form select:focus,
.demo-form textarea:focus {
    border-color: rgba(59, 130, 246, 0.6);
    background-color: rgba(37, 99, 235, 0.05);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.15);
}

.demo-field.has-error input {
    border-color: rgba(239, 68, 68, 0.7);
}

.demo-err {
    min-height: 0;
    margin: 0.3rem 0 0;
    font-size: 0.78rem;
    color: #f87171;
}

.demo-err:empty {
    display: none;
}

.demo-hp {
    position: absolute !important;
    left: -10000px;
    width: 1px;
    height: 1px;
    overflow: hidden;
}

.demo-check {
    display: flex;
    gap: 0.6rem;
    align-items: flex-start;
    margin: 1.25rem 0 1.25rem;
    font-size: 0.82rem;
    line-height: 1.5;
    color: var(--text-secondary);
    cursor: pointer;
}

.demo-check input {
    margin-top: 0.2rem;
    width: 1rem;
    height: 1rem;
    accent-color: var(--blue);
    flex: 0 0 auto;
}

.demo-submit {
    width: 100%;
    gap: 0.6rem;
}

.demo-submit:disabled {
    opacity: 0.75;
    cursor: progress;
    transform: none !important;
}

.demo-spinner {
    display: none;
    width: 1rem;
    height: 1rem;
    border: 2px solid rgba(255, 255, 255, 0.4);
    border-top-color: #ffffff;
    border-radius: 50%;
    animation: demo-spin 0.7s linear infinite;
}

.demo-submit.is-busy .demo-spinner {
    display: inline-block;
}

@keyframes demo-spin {
    to { transform: rotate(360deg); }
}

.demo-status {
    margin: 0.85rem 0 0;
    font-size: 0.85rem;
    line-height: 1.5;
}

.demo-status:empty {
    display: none;
}

.demo-status.is-error {
    color: #fca5a5;
    background: rgba(239, 68, 68, 0.08);
    border: 1px solid rgba(239, 68, 68, 0.25);
    border-radius: var(--radius-sm);
    padding: 0.65rem 0.85rem;
}

.demo-status a,
.demo-legal a,
.demo-success a {
    color: var(--blue-light);
    text-decoration: underline;
    text-underline-offset: 2px;
}

.demo-legal {
    margin: 1rem 0 0;
    font-size: 0.75rem;
    line-height: 1.5;
    color: var(--text-muted);
    text-align: center;
}

.demo-success {
    text-align: center;
    padding: 2.5rem 0.5rem;
    outline: none;
}

.demo-success-icon {
    width: 3rem;
    height: 3rem;
    margin: 0 auto 1.25rem;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--green);
    background: rgba(34, 197, 94, 0.12);
    border: 1px solid rgba(34, 197, 94, 0.35);
}

.demo-success h3 {
    font-size: 1.35rem;
    color: var(--white);
    margin-bottom: 0.75rem;
}

.demo-success p {
    color: var(--text-secondary);
    font-size: 0.92rem;
    line-height: 1.65;
    margin: 0 auto 0.75rem;
    max-width: 26rem;
}

.demo-success strong {
    color: var(--text-primary);
    word-break: break-all;
}

.demo-ref code {
    font-family: var(--font-mono);
    font-size: 0.85rem;
    color: var(--text-primary);
    background: rgba(255, 255, 255, 0.06);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-sm);
    padding: 0.2rem 0.5rem;
}

.demo-success-note {
    font-size: 0.82rem !important;
    color: var(--text-muted) !important;
}

/* Light theme */
html.light .demo-card {
    background: #ffffff;
    border-color: rgba(15, 23, 42, 0.1);
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.05), 0 20px 50px rgba(15, 23, 42, 0.08);
}

html.light .demo-form input[type="text"],
html.light .demo-form input[type="email"],
html.light .demo-form select,
html.light .demo-form textarea {
    background-color: #ffffff;
    border-color: rgba(15, 23, 42, 0.18);
    color: #0f172a;
}

html.light .demo-form select option {
    background: #ffffff;
    color: #0f172a;
}

html.light .demo-form input:focus,
html.light .demo-form select:focus,
html.light .demo-form textarea:focus {
    border-color: var(--blue);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.14);
}

html.light .demo-err { color: #dc2626; }
html.light .demo-status.is-error { color: #b91c1c; background: #fef2f2; border-color: #fecaca; }
html.light .demo-ref code { background: #f1f5f9; border-color: rgba(15, 23, 42, 0.1); }
html.light .demo-step-num { color: var(--blue); }

@media (max-width: 900px) {
    .demo-layout {
        grid-template-columns: 1fr;
        gap: 2.5rem;
    }
}

@media (max-width: 560px) {
    .demo-card {
        padding: 1.35rem;
    }
    .demo-grid {
        grid-template-columns: 1fr;
    }
}