/* ─── Scoped reset ─────────────────────────────────────────────── */
.svt, .svt *, .svt *::before, .svt *::after { box-sizing: border-box; }
.svt input, .svt button, .svt table { font: inherit; }

/* ─── Root variables ────────────────────────────────────────────── */
.svt {
  --svt-black:   #0a0a0a;
  --svt-white:   #ffffff;
  --svt-text:    #111111;
  --svt-muted:   #6b7280;
  --svt-border:  #e4e4e7;
  --svt-soft:    #f9f9fb;
  --svt-aroma:   #f59e0b;
  --svt-booster: #ef4444;
  --svt-base:    #3b82f6;
}

/* ─── Container ─────────────────────────────────────────────────── */
.svt {
  display: block;
  max-width: 960px;
  margin: 28px auto;
  font-family: Inter, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  color: var(--svt-text);
  background: var(--svt-white);
  border: 1px solid var(--svt-border);
  border-radius: 14px;
  overflow: hidden;
  box-shadow: 0 8px 32px -16px rgba(0,0,0,.14);
  isolation: isolate;
}

/* ─── Body grid ─────────────────────────────────────────────────── */
.svt__body {
  display: grid;
  grid-template-columns: 1.1fr 1fr;
  min-height: 480px;
}

@media (max-width: 780px) {
  .svt__body { grid-template-columns: 1fr; }
}

/* ─── Left: form panel ──────────────────────────────────────────── */
.svt__form-panel {
  background: var(--svt-white);
  border-right: 1px solid var(--svt-border);
  display: flex;
  flex-direction: column;
}

@media (max-width: 780px) {
  .svt__form-panel { border-right: 0; border-bottom: 1px solid var(--svt-border); }
}

/* tool title + description (rendered by JS inside form-panel header) */
.svt__tool-header {
  padding: 16px 18px 14px;
  border-bottom: 1px solid var(--svt-border);
  background: var(--svt-soft);
}
.svt__tool-title {
  margin: 0 0 4px;
  font-size: 13px;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: .05em;
  color: var(--svt-text) !important;
  line-height: 1.2;
}
.svt__tool-desc {
  margin: 0;
  font-size: 12px;
  color: var(--svt-muted);
  line-height: 1.45;
}

/* ─── Form sections ─────────────────────────────────────────────── */
.svt-section {
  padding: 13px 18px;
  border-bottom: 1px solid var(--svt-border);
}
.svt-section:last-child { border-bottom: 0; }

.svt-section__label {
  font-size: 10px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .07em;
  color: var(--svt-muted);
  margin: 0 0 9px;
  line-height: 1;
}

.svt-presets {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  align-items: center;
}

/* preset button */
.svt-preset {
  height: 32px;
  padding: 0 13px;
  border: 1px solid var(--svt-border);
  border-radius: 7px;
  background: var(--svt-white);
  color: var(--svt-text);
  font-size: 13px;
  font-weight: 500;
  cursor: pointer;
  transition: background .12s, border-color .12s, color .12s;
  line-height: 1;
}
.svt-preset:hover:not(.svt-preset--active) {
  border-color: #aaa;
}
.svt-preset--active {
  background: var(--svt-black) !important;
  color: var(--svt-white) !important;
  border-color: var(--svt-black) !important;
}

/* custom input inline */
.svt-custom-wrap {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  font-size: 12px;
  color: var(--svt-muted);
  margin-left: 2px;
}
.svt-custom-input {
  width: 62px !important;
  height: 32px !important;
  padding: 0 8px !important;
  border: 1px solid var(--svt-border) !important;
  border-radius: 7px !important;
  font-size: 13px !important;
  font-weight: 500 !important;
  color: var(--svt-text) !important;
  background: var(--svt-white) !important;
  text-align: center !important;
  appearance: none !important;
  -webkit-appearance: none !important;
  box-shadow: none !important;
  margin: 0 !important;
  outline: none;
  transition: border-color .15s;
}
.svt-custom-input:focus {
  border-color: var(--svt-black) !important;
  box-shadow: 0 0 0 3px rgba(0,0,0,.07) !important;
}

/* ─── Right: result panel ───────────────────────────────────────── */
.svt__result-panel {
  background: var(--svt-black);
  color: var(--svt-white);
  display: flex;
  flex-direction: column;
}

/* ─── Hero ──────────────────────────────────────────────────────── */
.svt__hero {
  padding: 22px 20px 18px;
  border-bottom: 1px solid rgba(255,255,255,.1);
  flex-shrink: 0;
}

.svt__hero-waiting {
  margin: 0;
  font-size: 13px;
  color: rgba(255,255,255,.32);
  padding: 18px 0;
  text-align: center;
}

.svt__hero-row {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 12px;
}
.svt__hero-text { flex: 1; min-width: 0; }

.svt__hero-label {
  font-size: 10px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .07em;
  color: rgba(255,255,255,.42);
  margin: 0 0 6px;
}
.svt__hero-number {
  display: flex;
  align-items: baseline;
  gap: 6px;
  flex-wrap: wrap;
  line-height: 1;
}
.svt__hero-value {
  font-size: 54px;
  font-weight: 800;
  color: var(--svt-white);
  letter-spacing: -.02em;
  line-height: 1;
}
.svt__hero-unit {
  font-size: 20px;
  font-weight: 400;
  color: rgba(255,255,255,.6);
}
.svt__hero-sub {
  margin: 8px 0 0;
  font-size: 12px;
  color: rgba(255,255,255,.48);
  line-height: 1.4;
}

/* bottle in hero */
.svt__bottle {
  width: 62px;
  flex-shrink: 0;
}
.svt__bottle svg {
  width: 100%;
  height: auto;
}

/* layer transition */
.svt-layer--base,
.svt-layer--booster,
.svt-layer--aroma,
.svt-meniscus {
  transition: y .3s ease, height .3s ease, opacity .25s ease;
}

/* ─── Ingredients ───────────────────────────────────────────────── */
.svt__ingredients {
  padding: 12px 20px;
  display: grid;
  gap: 7px;
  border-bottom: 1px solid rgba(255,255,255,.1);
}

.svt-ing {
  display: flex;
  align-items: center;
  gap: 10px;
}
.svt-ing__badge {
  width: 30px;
  height: 30px;
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 10px;
  font-weight: 800;
  color: var(--svt-white);
  letter-spacing: .02em;
  flex-shrink: 0;
}
.svt-ing__name {
  flex: 1;
  font-size: 13px;
  color: rgba(255,255,255,.82);
  min-width: 0;
}
.svt-ing__detail {
  font-size: 11px;
  color: rgba(255,255,255,.38);
  margin-right: 2px;
}
.svt-ing__value {
  font-size: 14px;
  font-weight: 700;
  color: var(--svt-white);
  white-space: nowrap;
}

/* ─── Guide ─────────────────────────────────────────────────────── */
.svt-guide {
  padding: 12px 20px 16px;
}
.svt-guide__title {
  font-size: 10px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .07em;
  color: rgba(255,255,255,.38);
  margin: 0 0 9px;
}
.svt-guide__row {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 12px;
  color: rgba(255,255,255,.6);
  margin-bottom: 5px;
  line-height: 1.35;
}
.svt-guide__row b { color: rgba(255,255,255,.88); font-weight: 600; }
.svt-guide__dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  flex-shrink: 0;
}

/* ─── Loading state ─────────────────────────────────────────────── */
.svt--loading .svt__result-panel {
  opacity: 0.45;
  pointer-events: none;
  transition: opacity 0.15s;
}
.svt--loading .svt__hero-waiting::after {
  content: '';
  display: inline-block;
  width: 14px;
  height: 14px;
  border: 2px solid rgba(255,255,255,.25);
  border-top-color: rgba(255,255,255,.75);
  border-radius: 50%;
  animation: svt-spin .7s linear infinite;
  margin-left: 10px;
  vertical-align: middle;
}
@keyframes svt-spin {
  to { transform: rotate(360deg); }
}

/* ─── Result fresh animation ─────────────────────────────────────── */
@keyframes svt-fade-up {
  from { opacity: 0.2; transform: translateY(8px); }
  to   { opacity: 1;   transform: translateY(0); }
}
.svt-result--fresh {
  animation: svt-fade-up 0.28s ease both;
}

/* ─── Tooltip ────────────────────────────────────────────────────── */
.svt-tip {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 15px;
  height: 15px;
  border-radius: 50%;
  background: #e5e7eb;
  color: #6b7280;
  font-size: 9px;
  font-weight: 800;
  cursor: help;
  border: none;
  position: relative;
  margin-left: 5px;
  vertical-align: middle;
  flex-shrink: 0;
  line-height: 1;
  padding: 0;
}
.svt-tip__text {
  display: none;
  position: absolute;
  bottom: calc(100% + 7px);
  left: 50%;
  transform: translateX(-50%);
  background: #111;
  color: #fff;
  font-size: 11px;
  font-weight: 400;
  padding: 8px 11px;
  border-radius: 8px;
  width: 210px;
  text-align: left;
  line-height: 1.5;
  z-index: 200;
  pointer-events: none;
  box-shadow: 0 4px 12px rgba(0,0,0,.22);
}
.svt-tip__text::after {
  content: '';
  position: absolute;
  top: 100%;
  left: 50%;
  transform: translateX(-50%);
  border: 5px solid transparent;
  border-top-color: #111;
}
.svt-tip:hover .svt-tip__text,
.svt-tip:focus .svt-tip__text,
.svt-tip.is-open .svt-tip__text {
  display: block;
}

/* ─── Error state ────────────────────────────────────────────────── */
.svt__hero-waiting--error {
  display: flex !important;
  align-items: flex-start;
  gap: 8px;
  color: #fca5a5 !important;
  background: rgba(239,68,68,.1);
  border-radius: 8px;
  padding: 10px 12px;
  font-size: 12px;
  line-height: 1.5;
  text-align: left;
}
.svt-error-icon {
  font-size: 14px;
  flex-shrink: 0;
  margin-top: 1px;
}

/* ─── Card presets (profile selector) ──────────────────────────── */
.svt-preset--card {
  height: auto !important;
  padding: 10px 16px !important;
  display: inline-flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
  min-width: 82px;
  text-align: center;
}
.svt-preset-card__icon {
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--svt-muted);
  margin-bottom: 2px;
}
.svt-preset--card.svt-preset--active .svt-preset-card__icon {
  color: rgba(255,255,255,.9);
}
.svt-preset-card__title {
  font-size: 13px;
  font-weight: 700;
  display: block;
}
.svt-preset-card__sub {
  font-size: 11px;
  color: var(--svt-muted);
  display: block;
}
.svt-preset--card.svt-preset--active .svt-preset-card__sub {
  color: rgba(255,255,255,.65);
}

/* ─── Solo (no-preset) input ────────────────────────────────────── */
.svt-solo-input {
  display: inline-flex;
  align-items: center;
  gap: 6px;
}
.svt-custom-input--solo {
  width: 90px !important;
}
.svt-solo-input__unit {
  font-size: 13px;
  color: var(--svt-muted);
}

/* ─── Section note ──────────────────────────────────────────────── */
.svt-section__note {
  margin-top: 7px;
  font-size: 11px;
  color: var(--svt-muted);
  line-height: 1.4;
}

/* ─── Reference table ───────────────────────────────────────────── */
.svt-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 11px;
  margin-top: 2px;
}
.svt-table th {
  color: rgba(255,255,255,.4);
  font-weight: 600;
  text-align: left;
  padding: 4px 8px 4px 0;
  border-bottom: 1px solid rgba(255,255,255,.12);
}
.svt-table td {
  color: rgba(255,255,255,.72);
  padding: 4px 8px 4px 0;
  border-bottom: 1px solid rgba(255,255,255,.06);
}

/* ═══════════════════════════════════════════════════════════════════
   ECONOMY CALCULATOR — overrides result panel to white
   ═══════════════════════════════════════════════════════════════════ */
.svt--economy .svt__result-panel {
  background: var(--svt-white);
  color: var(--svt-text);
}

.svt-eco {
  display: flex;
  flex-direction: column;
  height: 100%;
}

/* ─── Cost blocks ───────────────────────────────────────────────── */
.svt-cost-block {
  padding: 14px 18px;
  border-bottom: 1px solid var(--svt-border);
}
.svt-cost-block__title {
  font-size: 10px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .07em;
  color: var(--svt-muted);
  margin-bottom: 10px;
}
.svt-cost-block--vape {
  background: #f0fdf4;
}
.svt-cost-block__cols {
  display: flex;
  gap: 0;
}
.svt-cost-col {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 3px;
}
.svt-cost-col__label {
  font-size: 10px;
  color: var(--svt-muted);
}
.svt-cost-col__val {
  font-size: 15px;
  font-weight: 700;
  color: var(--svt-text);
}
.svt-cost-col--hi .svt-cost-col__val {
  font-size: 17px;
}
.svt-cost-block--vape .svt-cost-col__val {
  color: #16a34a;
}

/* ─── Savings hero block ────────────────────────────────────────── */
.svt-savings-block {
  background: var(--svt-black);
  color: var(--svt-white);
  padding: 18px 18px 16px;
  border-bottom: 1px solid var(--svt-border);
  text-align: center;
}
.svt-savings-block--negative {
  background: #7f1d1d;
}
.svt-savings-block__label {
  font-size: 10px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .07em;
  color: rgba(255,255,255,.5);
  margin-bottom: 6px;
}
.svt-savings-block__value {
  font-size: 46px;
  font-weight: 800;
  letter-spacing: -.02em;
  line-height: 1;
  margin-bottom: 5px;
}
.svt-savings-block__sub {
  font-size: 13px;
  color: rgba(255,255,255,.6);
}

/* ─── Monthly detail ────────────────────────────────────────────── */
.svt-eco-detail {
  padding: 12px 18px;
  border-bottom: 1px solid var(--svt-border);
  flex: 1;
}
.svt-eco-detail__title {
  font-size: 10px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .07em;
  color: var(--svt-muted);
  margin-bottom: 9px;
}
.svt-eco-detail__row {
  display: flex;
  justify-content: space-between;
  font-size: 12px;
  color: #374151;
  padding: 4px 0;
  border-bottom: 1px solid #f3f4f6;
}
.svt-eco-detail__total {
  display: flex;
  justify-content: space-between;
  font-size: 13px;
  font-weight: 700;
  color: var(--svt-text);
  padding-top: 8px;
  margin-top: 2px;
}

/* ─── Health note ───────────────────────────────────────────────── */
.svt-eco-health {
  display: flex;
  gap: 10px;
  align-items: flex-start;
  padding: 11px 18px 14px;
  font-size: 11px;
  color: #374151;
  line-height: 1.5;
  background: #fafafa;
}
.svt-eco-health__icon {
  font-size: 16px;
  flex-shrink: 0;
  color: #dc2626;
  margin-top: 1px;
}
.svt-eco-health b {
  color: var(--svt-text);
}

/* ─── SEO block under each tool ─────────────────────────────────── */
.svt-seo {
  margin: 20px auto 34px;
  max-width: 960px;
  padding: 18px 20px;
  border: 1px solid #e5e7eb;
  border-radius: 12px;
  background: #ffffff;
  color: #111827;
}

.svt-seo__title {
  margin: 0 0 10px;
  font-size: 22px;
  line-height: 1.3;
  font-weight: 800;
  color: #111111;
}

.svt-seo__subtitle {
  margin: 18px 0 10px;
  font-size: 16px;
  line-height: 1.35;
  font-weight: 700;
  color: #111827;
}

.svt-seo__text {
  margin: 0 0 10px;
  font-size: 15px;
  line-height: 1.75;
  color: #1f2937;
}

.svt-seo__terms {
  margin: 0;
  padding-left: 18px;
}

.svt-seo__term-item {
  margin: 0 0 8px;
  font-size: 14px;
  line-height: 1.65;
  color: #1f2937;
}

.svt-seo__faq {
  display: grid;
  gap: 8px;
}

.svt-seo__faq-item {
  border: 1px solid #e5e7eb;
  border-radius: 10px;
  background: #fafafa;
  padding: 10px 12px;
}

.svt-seo__faq-item summary {
  cursor: pointer;
  font-size: 14px;
  font-weight: 700;
  color: #111827;
  list-style: none;
}

.svt-seo__faq-item summary::-webkit-details-marker {
  display: none;
}

.svt-seo__faq-item p {
  margin: 8px 0 0;
  font-size: 14px;
  line-height: 1.65;
  color: #374151;
}