/* Калькулятор селлера (205). Визуал — точный перенос прототипа
   handoff/seller_calculator/prototype/Калькулятор Селлера.dc.html.
   Токены — литералы из дизайн-системы FFLite (colors_and_type.css прототипа);
   шрифт — системный стек биржи (осознанное отличие от прототипа, plan 205 §5.2). */

.calc-page {
  --c-primary: #2563eb;
  --c-primary-hover: #1d4ed8;
  --c-orange: #E67E22;
  --c-border: rgba(15, 23, 42, 0.08);
  --c-slate-50: #f8fafc;
  --c-slate-100: #f1f5f9;
  --c-slate-300: #cbd5e1;
  --c-slate-400: #94a3b8;
  --c-slate-500: #64748b;
  --c-slate-600: #475569;
  --c-slate-800: #1e293b;
  --c-slate-900: #0f172a;
  --c-gray-medium: #e0e0e0;
  --c-teal-bg: #e7f6f8;
  --c-teal-border: #9ad3dc;
  --c-teal-fg: #134e4a;
  --c-warn-bg: rgba(243, 156, 18, 0.18);
  --c-warn-fg: #b9770e;
  --c-shadow-sm: 0 1px 4px rgba(0, 0, 0, 0.04);
  --c-shadow-card: 0 4px 12px rgba(15, 23, 42, 0.08);
  max-width: none;
  padding: 0;
  margin: 0;
  color: var(--c-slate-900);
}

.calc-wrap { max-width: 880px; margin: 0 auto; }

/* HOTFIX 205: атрибут hidden обязан побеждать любые display-правила ниже
   (.calc-form { display: flex } перебивал его — обе формы были видны разом). */
.calc-page [hidden] { display: none !important; }

/* ---------- Кнопки ---------- */
.calc-btn {
  display: inline-flex; align-items: center; justify-content: center;
  padding: 12px 32px; border: none; border-radius: 8px;
  font-size: 15px; font-weight: 600; cursor: pointer;
  transition: all 0.2s ease; text-decoration: none;
}
.calc-btn--primary { background: var(--c-primary); color: #ffffff; }
.calc-btn--primary:hover {
  background: var(--c-primary-hover);
  transform: translateY(-1px);
  box-shadow: 0 5px 15px rgba(37, 99, 235, 0.3);
}
.calc-btn--lg { padding: 14px 32px; font-size: 16px; margin-top: 8px; /* прототип:58 */ }
.calc-btn--lg:hover { transform: translateY(-2px); }
.calc-btn--dark-ghost {
  background: transparent; color: #ffffff;
  border: 1px solid var(--c-slate-600); padding: 13px 28px;
}
.calc-btn--dark-ghost:hover:not(:disabled) {
  border-color: var(--c-slate-400);
  background: rgba(255, 255, 255, 0.06);
}
.calc-btn--dark-ghost:disabled { opacity: 0.55; cursor: not-allowed; }

/* ---------- Первый экран ---------- */
.calc-hero {
  padding: clamp(48px, 8vw, 88px) 24px clamp(40px, 6vw, 64px);
  max-width: 820px; margin: 0 auto;
  display: flex; flex-direction: column; align-items: center;
  text-align: center; gap: 20px;
}
.calc-hero h1 {
  margin: 0; font-size: clamp(30px, 4.5vw, 46px); line-height: 1.15;
  font-weight: 800; color: var(--c-slate-900); letter-spacing: -0.02em;
  text-wrap: balance;
}
.calc-hero__sub {
  margin: 0; max-width: 640px;
  font-size: clamp(16px, 2vw, 18px); line-height: 1.6;
  color: var(--c-slate-600); text-wrap: pretty;
}
.calc-example {
  display: flex; flex-wrap: wrap; justify-content: center; gap: 0;
  background: #ffffff; border: 1px solid var(--c-border);
  border-radius: 12px; box-shadow: var(--c-shadow-sm); margin-top: 8px;
}
.calc-example__cell {
  padding: 16px 28px; display: flex; flex-direction: column;
  gap: 4px; min-width: 140px;
}
.calc-example__label {
  font-size: 10px; text-transform: uppercase; letter-spacing: 0.04em;
  font-weight: 600; color: var(--c-slate-500);
}
.calc-example__value { font-size: 20px; font-weight: 700; color: var(--c-slate-900); }
.calc-example__value--accent { color: var(--c-primary); }
.calc-example__sep { width: 1px; background: var(--c-slate-100); margin: 12px 0; }

/* ---------- Калькулятор ---------- */
.calc-section { padding: 8px 24px 24px; }
.calc-card {
  background: #ffffff; border: 1px solid var(--c-border);
  border-radius: 16px; box-shadow: var(--c-shadow-card);
  padding: clamp(20px, 4vw, 32px);
  display: flex; flex-direction: column; gap: 18px;
}
.calc-card--main { gap: 24px; }

.calc-tabs {
  display: flex; gap: 4px; background: var(--c-slate-100);
  border-radius: 10px; padding: 4px;
}
.calc-tab {
  flex: 1; padding: 11px 16px; border-radius: 8px;
  font-size: 15px; font-weight: 600; cursor: pointer;
  transition: all 0.2s ease;
  /* Бирюзовый = неактивная вкладка (можно переключиться) */
  background: var(--c-teal-bg); color: var(--c-teal-fg);
  border: 1px solid var(--c-teal-border); box-shadow: none;
}
.calc-tab:hover { filter: brightness(0.96); }
.calc-tab.is-active {
  /* Синий = активная вкладка (сейчас открыто) */
  background: var(--c-primary); color: #ffffff;
  border-color: var(--c-primary);
  box-shadow: 0 2px 8px rgba(37, 99, 235, 0.3);
}

.calc-form { display: flex; flex-direction: column; gap: 20px; }
.calc-field { display: flex; flex-direction: column; gap: 6px; }
.calc-field label { font-size: 13px; font-weight: 500; color: var(--c-slate-900); }
.calc-input {
  width: 100%; box-sizing: border-box; padding: 10px 12px;
  border: 1px solid var(--c-gray-medium); border-radius: 6px;
  font-size: 0.95rem; font-family: inherit; background: #ffffff;
  outline: none; transition: all 0.2s ease;
}
.calc-input:focus {
  border-color: var(--c-primary);
  box-shadow: 0 0 0 2px rgba(37, 99, 235, 0.2);
}
.calc-input::placeholder { color: var(--c-slate-400); opacity: 1; }
textarea.calc-input { resize: vertical; }
.calc-hint { font-size: 12px; color: var(--c-slate-500); line-height: 1.4; }

.calc-grid {
  display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 16px 20px;
}
.calc-grid--top { grid-template-columns: repeat(auto-fit, minmax(180px, 1fr)); }

.calc-actions { display: flex; align-items: center; gap: 16px; flex-wrap: wrap; }
.calc-error {
  font-size: 13px; color: var(--c-warn-fg); background: var(--c-warn-bg);
  padding: 8px 12px; border-radius: 6px;
}
.calc-note { margin: 0; font-size: 13px; color: var(--c-slate-500); line-height: 1.5; }
.calc-privacy {
  margin: 10px 4px 0; text-align: center;
  font-size: 12.5px; color: var(--c-slate-500);
}

/* ---------- Результат ---------- */
.calc-result-section { padding: 16px 24px 24px; }
.calc-result__stack { display: flex; flex-direction: column; gap: 16px; }
/* Карточка результата в прототипе плотнее обычной: gap 20px (прототип:150). */
.calc-result__stack > .calc-card:first-child { gap: 20px; }
.calc-result__head {
  display: flex; align-items: baseline; justify-content: space-between;
  gap: 12px; flex-wrap: wrap;
}
.calc-kicker {
  font-size: 11px; text-transform: uppercase; letter-spacing: 0.04em;
  font-weight: 600; color: var(--c-slate-500);
}
.calc-caption { font-size: 13px; color: var(--c-slate-500); }

.calc-stats {
  display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 16px;
}
.calc-stat {
  background: var(--c-slate-50); border: 1px solid var(--c-slate-100);
  border-radius: 12px; padding: 20px;
  display: flex; flex-direction: column; gap: 6px;
}
.calc-stat--accent {
  background: rgba(37, 99, 235, 0.06);
  border-color: rgba(37, 99, 235, 0.14);
}
.calc-stat__label { font-size: 13px; font-weight: 500; color: var(--c-slate-600); }
.calc-stat__num {
  font-size: clamp(26px, 3vw, 32px); font-weight: 700;
  color: var(--c-slate-900); letter-spacing: -0.01em;
}
.calc-stat__num--accent { color: var(--c-primary); }
.calc-stat__top-name {
  font-size: clamp(20px, 2.4vw, 24px); font-weight: 700;
  color: var(--c-slate-900); letter-spacing: -0.01em;
}
.calc-stat__top-amount { font-size: 15px; font-weight: 600; color: var(--c-orange); }

.calc-callout {
  background: var(--c-teal-bg); border: 1px solid var(--c-teal-border);
  border-radius: 10px; padding: 14px 18px;
  font-size: 14px; line-height: 1.55; color: var(--c-teal-fg);
}

.calc-rows { display: flex; flex-direction: column; gap: 14px; }
.calc-row { display: flex; flex-direction: column; gap: 6px; }
.calc-row__head {
  display: flex; align-items: baseline; justify-content: space-between; gap: 12px;
}
.calc-row__name { font-size: 14px; color: var(--c-slate-800); font-weight: 500; }
.calc-row__name--top { font-weight: 600; }
.calc-row__amount {
  font-size: 14px; color: var(--c-slate-900); font-weight: 600; white-space: nowrap;
}
.calc-row__pct { color: var(--c-slate-400); font-weight: 500; }
.calc-row__track {
  height: 6px; border-radius: 999px; background: var(--c-slate-100); overflow: hidden;
}
.calc-row__bar {
  height: 100%; border-radius: 999px; background: var(--c-primary);
  transition: width 0.4s ease;
}
.calc-row__bar--top { background: var(--c-orange); }

/* ---------- Что часто забывают учесть ---------- */
.calc-forget { padding: clamp(32px, 5vw, 56px) 24px; }
.calc-forget h2,
.calc-faq h2 {
  margin: 0 0 20px; font-size: clamp(22px, 3vw, 28px); font-weight: 700;
  color: var(--c-slate-900); letter-spacing: -0.01em;
}
.calc-forget__grid {
  display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 16px;
}
.calc-forget__card {
  background: #ffffff; border: 1px solid var(--c-border);
  border-radius: 12px; box-shadow: var(--c-shadow-sm); padding: 20px;
  display: flex; flex-direction: column; gap: 10px;
}
.calc-forget__num {
  width: 28px; height: 28px; border-radius: 999px;
  background: var(--c-warn-bg); color: var(--c-warn-fg);
  font-size: 13px; font-weight: 700;
  display: inline-flex; align-items: center; justify-content: center;
}
.calc-forget__title { font-size: 15px; font-weight: 600; color: var(--c-slate-900); }
.calc-forget__text {
  font-size: 13.5px; line-height: 1.55; color: var(--c-slate-600); text-wrap: pretty;
}

/* ---------- CTA ---------- */
.calc-cta-section { padding: 0 24px clamp(32px, 5vw, 56px); }
.calc-cta {
  background: var(--c-slate-900); border-radius: 16px;
  padding: clamp(28px, 5vw, 48px);
  display: flex; flex-direction: column; align-items: center;
  text-align: center; gap: 14px;
}
.calc-cta h2 {
  margin: 0; font-size: clamp(20px, 3vw, 26px); font-weight: 700;
  color: #ffffff; letter-spacing: -0.01em; text-wrap: balance;
}
.calc-cta p {
  margin: 0; max-width: 560px; font-size: 15px; line-height: 1.6;
  color: var(--c-slate-300); text-wrap: pretty;
}
.calc-cta__btns {
  display: flex; gap: 12px; flex-wrap: wrap; justify-content: center; margin-top: 8px;
}
.calc-cta .calc-btn--primary { padding: 13px 28px; }
.calc-cta .calc-btn--primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 5px 15px rgba(37, 99, 235, 0.4);
}
.calc-cta__hint { font-size: 12.5px; color: var(--c-slate-500); }

/* ---------- FAQ ---------- */
.calc-faq { padding: 0 24px clamp(48px, 7vw, 72px); }
.calc-faq__list { display: flex; flex-direction: column; gap: 10px; }
.calc-faq__item {
  background: #ffffff; border: 1px solid var(--c-border);
  border-radius: 12px; box-shadow: var(--c-shadow-sm); overflow: hidden;
}
.calc-faq__q {
  width: 100%; display: flex; align-items: center; justify-content: space-between;
  gap: 16px; padding: 16px 20px; background: transparent; border: none;
  cursor: pointer; font-family: inherit; text-align: left;
  transition: background 0.2s ease;
}
.calc-faq__q:hover { background: var(--c-slate-50); }
.calc-faq__q > span:first-child {
  font-size: 15px; font-weight: 600; color: var(--c-slate-900);
}
.calc-faq__sym {
  font-size: 18px; font-weight: 500; color: var(--c-slate-400);
  flex-shrink: 0; width: 20px; text-align: center;
}
.calc-faq__a {
  margin: 0; padding: 0 20px 16px; font-size: 14px; line-height: 1.6;
  color: var(--c-slate-600); text-wrap: pretty;
}

/* ---------- Мобильная адаптация ---------- */
@media (max-width: 560px) {
  .calc-example { flex-direction: column; align-items: stretch; }
  .calc-example__sep { width: auto; height: 1px; margin: 0 16px; }
  .calc-cta__btns { flex-direction: column; width: 100%; }
  .calc-cta__btns .calc-btn { width: 100%; }
}