.vpc-calculator {
    --vpc-blue: #0B3A8C;
    --vpc-blue-2: #1E4FB8;
    --vpc-blue-3: #2D6CDE;
    --vpc-glow: #6BD4FF;
    --vpc-ink: #0B1224;
    --vpc-ink-2: #1E2A44;
    --vpc-muted: #5A6783;
    --vpc-line: #E4E9F3;
    --vpc-cream: #F4F7FC;
    --vpc-err: #C62828;
    --vpc-radius: 12px;
    --vpc-radius-lg: 22px;

    font-family: "Inter", system-ui, -apple-system, sans-serif;
    color: var(--vpc-ink);
    width: 100%;
    max-width: 100%;
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

.vpc-calculator *, .vpc-calculator *::before, .vpc-calculator *::after {
    box-sizing: border-box;
}

.vpc-wrap {
    background: #fff;
    border: 1px solid var(--vpc-line);
    border-radius: var(--vpc-radius-lg);
    overflow: hidden;
    box-shadow: 0 24px 60px -20px rgba(11,20,55,.15);
}

/* Progress bar */
.vpc-progress {
    display: flex;
    background: var(--vpc-cream);
    border-bottom: 1px solid var(--vpc-line);
}

.vpc-step-tab {
    flex: 1;
    padding: 18px 16px;
    text-align: center;
    font-size: 12.5px;
    font-weight: 600;
    letter-spacing: .04em;
    color: var(--vpc-muted);
    background: transparent;
    border: none;
    border-right: 1px solid var(--vpc-line);
    cursor: pointer;
    position: relative;
    transition: color .2s, background .2s;
    font-family: inherit;
}

.vpc-step-tab:last-child { border-right: 0; }

.vpc-step-tab.active {
    color: var(--vpc-blue);
    background: #fff;
}

.vpc-step-tab.active::after {
    content: "";
    position: absolute;
    bottom: -1px; left: 0; right: 0; height: 3px;
    background: var(--vpc-blue-2);
}

.vpc-step-tab.done { color: var(--vpc-blue-2); }

.vpc-step-num {
    display: inline-block;
    width: 22px; height: 22px;
    border-radius: 50%;
    background: var(--vpc-line);
    color: var(--vpc-muted);
    font-family: "Manrope", system-ui, sans-serif;
    font-size: 12px; font-weight: 700;
    line-height: 22px;
    margin-right: 8px;
    transition: background .2s, color .2s;
}

.vpc-step-tab.active .vpc-step-num { background: var(--vpc-blue-2); color: #fff; }
.vpc-step-tab.done .vpc-step-num { background: var(--vpc-blue); color: #fff; }

@media (max-width: 760px) {
    .vpc-step-label { display: none; }
    .vpc-step-tab { padding: 14px 8px; }
}

/* Panel */
.vpc-panel {
    padding: 40px clamp(24px, 4vw, 56px);
}

.vpc-question {
    font-family: "Manrope", "Inter", system-ui, sans-serif;
    font-size: clamp(22px, 2.6vw, 30px);
    font-weight: 700;
    margin: 0 0 6px;
    letter-spacing: -.015em;
    color: var(--vpc-ink);
}

.vpc-sub {
    color: var(--vpc-muted);
    margin: 0 0 28px;
    font-size: 15px;
}

/* Options grid */
.vpc-options {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 12px;
}

@media (max-width: 600px) { .vpc-options { grid-template-columns: 1fr; } }

.vpc-opt {
    display: flex; align-items: center; gap: 14px;
    padding: 18px 20px;
    border: 1.5px solid var(--vpc-line);
    border-radius: var(--vpc-radius);
    background: #fff;
    text-align: left;
    font-family: inherit;
    font-size: 15.5px;
    font-weight: 500;
    color: var(--vpc-ink);
    cursor: pointer;
    transition: all .15s ease;
}

.vpc-opt:hover {
    border-color: var(--vpc-blue-2);
    background: rgba(45,108,222,.03);
}

.vpc-opt.selected {
    border-color: var(--vpc-blue);
    background: linear-gradient(135deg, rgba(45,108,222,.06), rgba(56,189,248,.04));
}

/* Radio */
.vpc-radio {
    width: 22px; height: 22px;
    border-radius: 50%;
    border: 2px solid var(--vpc-line);
    flex-shrink: 0;
    position: relative;
    transition: all .15s ease;
}

.vpc-opt.selected .vpc-radio { border-color: var(--vpc-blue); }

.vpc-opt.selected .vpc-radio::after {
    content: "";
    position: absolute;
    inset: 4px;
    border-radius: 50%;
    background: var(--vpc-blue);
}

/* Checkbox (multi select) */
.vpc-check {
    width: 22px; height: 22px;
    border: 2px solid var(--vpc-line);
    border-radius: 5px;
    display: inline-flex; align-items: center; justify-content: center;
    flex-shrink: 0;
    background: #fff;
    position: relative;
    transition: all .2s ease;
}

.vpc-multi .vpc-opt.selected .vpc-check {
    background: var(--vpc-blue);
    border-color: var(--vpc-blue);
}

.vpc-multi .vpc-opt.selected .vpc-check::after {
    content: '';
    width: 6px; height: 11px;
    border: solid #fff;
    border-width: 0 2.5px 2.5px 0;
    transform: rotate(45deg);
    margin-top: -2px;
}

/* Contact form */
.vpc-form-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
}

@media (max-width: 600px) { .vpc-form-grid { grid-template-columns: 1fr; } }

.vpc-field {
    display: flex; flex-direction: column; gap: 6px;
}

.vpc-span-2 { grid-column: 1 / -1; }

.vpc-field label {
    font-size: 13px;
    font-weight: 600;
    color: var(--vpc-ink-2);
    letter-spacing: .02em;
}

.vpc-req { color: var(--vpc-err); }

.vpc-field input[type="text"],
.vpc-field input[type="tel"],
.vpc-field input[type="email"] {
    font-family: inherit;
    padding: 14px 16px;
    border: 1.5px solid var(--vpc-line);
    border-radius: 10px;
    background: #fff;
    color: var(--vpc-ink);
    font-size: 15px;
    transition: border-color .15s ease, box-shadow .15s ease;
    width: 100%;
}

.vpc-field input:focus {
    outline: none;
    border-color: var(--vpc-blue-2);
    box-shadow: 0 0 0 4px rgba(45,108,222,.12);
}

.vpc-checkbox-label {
    display: flex; align-items: flex-start; gap: 10px;
    font-size: 13.5px;
    color: var(--vpc-ink-2);
    line-height: 1.5;
    cursor: pointer;
}

.vpc-checkbox-label input[type="checkbox"] { margin-top: 3px; }

.vpc-checkbox-label a {
    color: var(--vpc-blue-2);
    text-decoration: underline;
}

/* Nav */
.vpc-nav {
    display: flex; justify-content: space-between; align-items: center;
    margin-top: 32px;
    padding-top: 24px;
    border-top: 1px solid var(--vpc-line);
    gap: 16px;
}

.vpc-counter {
    color: var(--vpc-muted);
    font-size: 15px;
}

.vpc-btn {
    font-family: inherit;
    font-size: 15px;
    font-weight: 600;
    padding: 14px 28px;
    border-radius: var(--vpc-radius);
    cursor: pointer;
    transition: all .2s ease;
    border: none;
}

.vpc-btn-primary {
    background: linear-gradient(180deg, var(--vpc-blue-3), var(--vpc-blue));
    color: #fff;
    box-shadow: 0 6px 24px -6px rgba(11,58,140,.45);
}

.vpc-btn-primary:hover {
    transform: translateY(-1px);
    box-shadow: 0 8px 28px -6px rgba(11,58,140,.55);
}

.vpc-btn-ghost {
    background: transparent;
    color: var(--vpc-ink);
    border: 1px solid var(--vpc-line);
}

.vpc-btn-ghost:hover {
    background: var(--vpc-cream);
}

.vpc-btn:disabled {
    opacity: .4;
    cursor: not-allowed;
    transform: none;
}

/* Result */
.vpc-result {
    display: none;
    padding: 40px;
    text-align: center;
}

.vpc-result.show { display: block; }

.vpc-result-check {
    width: 72px; height: 72px;
    border-radius: 50%;
    background: linear-gradient(180deg, #34D399, #059669);
    display: inline-flex; align-items: center; justify-content: center;
    margin-bottom: 22px;
    box-shadow: 0 12px 30px -12px rgba(5,150,105,.6);
}

.vpc-result h3 {
    font-family: "Manrope", "Inter", system-ui, sans-serif;
    font-size: 28px;
    font-weight: 700;
    margin: 0 0 10px;
    color: var(--vpc-ink);
}

.vpc-result-sub {
    color: var(--vpc-ink-2);
    max-width: 48ch;
    margin: 0 auto;
}

.vpc-estimate {
    margin: 28px auto 0;
    max-width: 480px;
    padding: 24px;
    background: linear-gradient(135deg, #061436, #0B3A8C);
    color: #fff;
    border-radius: var(--vpc-radius);
}

.vpc-estimate-label {
    font-size: 12px;
    letter-spacing: .14em;
    text-transform: uppercase;
    color: var(--vpc-glow);
}

.vpc-estimate-value {
    font-family: "Manrope", "Inter", system-ui, sans-serif;
    font-weight: 800;
    font-size: 34px;
    margin: 6px 0;
}

.vpc-estimate small {
    color: rgba(229,237,255,.7);
    font-size: 13px;
}

/* Error */
.vpc-error {
    padding: 20px;
    text-align: center;
    color: var(--vpc-err);
}

/* Loading state */
.vpc-btn-primary.loading {
    pointer-events: none;
    opacity: .7;
}

.vpc-btn-primary.loading::after {
    content: '';
    display: inline-block;
    width: 16px; height: 16px;
    border: 2px solid rgba(255,255,255,.3);
    border-top-color: #fff;
    border-radius: 50%;
    margin-left: 8px;
    vertical-align: middle;
    animation: vpc-spin .6s linear infinite;
}

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