/* assets/css/styles.css */

/* =========================
   Палитра и базовая типографика
   ========================= */

:root{
  --white:#FFFFFF;
  --soft:#EAF3FA;
  --blue:#1F3C5B;
  --slate:#6F7F8E;
  --graphite:#2A2E33;

  --radius: 18px;
  --radius2: 28px;

  --shadow: 0 18px 50px rgba(31,60,91,.10);
  --hairline: 1px solid rgba(42,46,51,.10);

  --container: 1120px;
  --gutter: clamp(18px, 4vw, 44px);

  --h1: clamp(46px, 6vw, 88px);
  --h2: clamp(28px, 4vw, 48px);
  --h3: 18px;
  --body: clamp(16px, 1.6vw, 18px);
  --lh: 1.7;
}

/* Системные шрифты по умолчанию */
body{
  margin:0;
  color:var(--graphite);
  background:var(--white);
  font: 400 var(--body)/var(--lh) ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, Arial, "Noto Sans", sans-serif;
  text-rendering: geometricPrecision;
}

h1,h2,h3{
  margin:0;
  color: var(--blue);
}

.h1{
  font-family: ui-serif, "Times New Roman", Times, serif;
  font-weight: 600;
  letter-spacing: -0.02em;
  font-size: var(--h1);
  line-height: 1.05;
}

.h2{
  font-family: ui-serif, "Times New Roman", Times, serif;
  font-weight: 600;
  letter-spacing: -0.01em;
  font-size: var(--h2);
  line-height: 1.15;
}

.h3{
  font-weight: 600;
  font-size: 18px;
  letter-spacing: -0.01em;
}

p{ margin: 0; }

a{ color: inherit; text-decoration: none; }
a:hover{ text-decoration: underline; }

.muted{ color: var(--slate); }
.lead{ font-size: clamp(18px, 2.1vw, 22px); line-height: 1.65; color: var(--graphite); }
.sublead{ color: var(--slate); }

.kicker{
  letter-spacing: .16em;
  text-transform: uppercase;
  font-size: 12px;
  color: var(--slate);
}

/* =========================
   Layout
   ========================= */

.container{
  width: min(var(--container), calc(100% - 2*var(--gutter)));
  margin: 0 auto;
}

.screen{
  position: relative;
  padding: clamp(56px, 8vw, 110px) 0;
  overflow: hidden;
}

.bg-white{ background: var(--white); }
.bg-soft{ background: var(--soft); }

.headline{
  display:flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 18px;
  margin-bottom: clamp(26px, 4vw, 40px);
}

.headline p{ max-width: 560px; }

@media (max-width: 860px){
  .headline{ flex-direction: column; align-items: flex-start; }
}

/* =========================
   Верхняя панель
   ========================= */

.skip{
  position:absolute;
  left:-9999px;
  top: 10px;
  background: var(--white);
  border: var(--hairline);
  padding: 10px 12px;
  border-radius: 10px;
  z-index: 999;
}
.skip:focus{ left: 10px; }

.topbar{
  position: sticky;
  top:0;
  z-index: 50;
  background: rgba(255,255,255,.82);
  backdrop-filter: blur(10px);
}

.nav{
  width: min(var(--container), calc(100% - 2*var(--gutter)));
  margin: 0 auto;
  padding: 14px 0;
  display:flex;
  align-items:center;
  justify-content: space-between;
  gap: 18px;
}

.brand{
  font-family: ui-serif, "Times New Roman", Times, serif;
  color: var(--blue);
  font-weight: 600;
  letter-spacing: -0.01em;
}

.nav__links{
  display:flex;
  align-items:center;
  gap: 16px;
  color: var(--slate);
}

.nav__cta{
  color: var(--blue);
  padding: 8px 12px;
  border-radius: 999px;
  border: 1px solid rgba(31,60,91,.18);
  text-decoration: none;
}
.nav__cta:hover{ text-decoration: none; box-shadow: 0 12px 30px rgba(31,60,91,.10); }

.hairline{ border-top: var(--hairline); }

/* =========================
   Кнопки
   ========================= */

.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap: 10px;
  padding: 12px 16px;
  border-radius: 999px;
  border: 1px solid rgba(31,60,91,.22);
  color: var(--blue);
  background: rgba(255,255,255,.75);
  box-shadow: 0 12px 34px rgba(31,60,91,.08);
  cursor:pointer;
  transition: transform .25s ease, box-shadow .25s ease, background .25s ease;
}
.btn:hover{
  transform: translateY(-1px);
  box-shadow: 0 18px 44px rgba(31,60,91,.12);
  background: rgba(255,255,255,.92);
  text-decoration:none;
}

.btn--ghost{
  background: transparent;
  box-shadow: none;
}
.btn--ghost:hover{
  background: rgba(255,255,255,.7);
}

/* =========================
   1. Обложка
   ========================= */

.cover{
  display:grid;
  grid-template-columns: 1.05fr .95fr;
  gap: clamp(22px, 4vw, 56px);
  align-items: center;
}

.cover__text{ max-width: 560px; }

.cover__actions{
  margin-top: 22px;
  display:flex;
  flex-wrap: wrap;
  gap: 12px;
}

.cover__figure{
  margin:0;
  padding: 18px;
  border-radius: var(--radius2);
  background: rgba(255,255,255,.7);
  border: 1px solid rgba(42,46,51,.10);
  box-shadow: var(--shadow);
}

.cover__figure img{
  width:100%;
  height: auto;
  display:block;
  border-radius: calc(var(--radius2) - 10px);
  filter: saturate(.92) contrast(.98);
  transform: translateZ(0);
}

.caption{
  margin-top: 12px;
  color: var(--slate);
  font-size: 14px;
}

@media (max-width: 980px){
  .cover{ grid-template-columns: 1fr; }
}

.bg-pattern{
  position:absolute;
  inset:-40% -40%;
  pointer-events:none;
  opacity: .32;
  background:
    linear-gradient(transparent 0, transparent 94%, rgba(31,60,91,.10) 94%, rgba(31,60,91,.10) 100%),
    linear-gradient(90deg, transparent 0, transparent 92%, rgba(31,60,91,.08) 92%, rgba(31,60,91,.08) 100%);
  background-size: 60px 60px;
  transform: translate3d(0,0,0);
}

/* =========================
   2. Заметки
   ========================= */

.notes{
  display:grid;
  grid-template-columns: repeat(12, 1fr);
  gap: 14px;
}

.note{
  grid-column: span 4;
  padding: 18px 18px 18px 16px;
  border-radius: var(--radius);
  border: 1px solid rgba(42,46,51,.10);
  background: rgba(255,255,255,.86);
  box-shadow: 0 16px 46px rgba(31,60,91,.06);
  position: relative;
}

.note__line{
  position:absolute;
  left: 14px;
  top: 16px;
  bottom: 16px;
  width: 2px;
  background: linear-gradient(to bottom, rgba(31,60,91,.0), rgba(31,60,91,.25), rgba(31,60,91,.0));
  border-radius: 10px;
  opacity: .8;
}

.note__title{
  margin-left: 10px;
  font-weight: 600;
  color: var(--blue);
  letter-spacing: -0.01em;
}

.note__text{
  margin-left: 10px;
  margin-top: 8px;
  color: var(--slate);
}

@media (max-width: 980px){
  .note{ grid-column: span 6; }
}
@media (max-width: 620px){
  .note{ grid-column: span 12; }
}

/* =========================
   3. Лист бумаги
   ========================= */

.paper{
  max-width: 760px;
  margin: 0 auto;
  padding: clamp(18px, 3vw, 30px);
  border-radius: var(--radius2);
  background: rgba(255,255,255,.82);
  border: 1px solid rgba(42,46,51,.10);
  box-shadow: var(--shadow);
}

.bullets{
  margin: 16px 0 12px;
  padding-left: 18px;
  color: var(--graphite);
}
.bullets li{ margin: 8px 0; }

/* =========================
   3. Точка поворота: лист + иллюстрация
   ========================= */

.turn{
  display: grid;
  grid-template-columns: 1.05fr .95fr;
  gap: clamp(16px, 4vw, 44px);
  align-items: center;
}

.turn__figure{
  margin: 0;
  padding: 18px;
  border-radius: var(--radius2);
  background: rgba(255,255,255,.70);
  border: 1px solid rgba(42,46,51,.10);
  box-shadow: var(--shadow);
}

.turn__figure img{
  width: 100%;
  height: auto;
  display: block;
  border-radius: calc(var(--radius2) - 10px);
  filter: saturate(.95) contrast(.98);
}

@media (max-width: 980px){
  .turn{ grid-template-columns: 1fr; }
  .paper{ max-width: 100%; }
}

/* =========================
   4. Обо мне
   ========================= */

.about{
  display:grid;
  grid-template-columns: 1fr 1fr;
  gap: clamp(20px, 4vw, 56px);
  align-items: center;
}

.about__photo{
  margin:0;
  position:relative;
  border-radius: var(--radius2);
  overflow:hidden;
  border: 1px solid rgba(42,46,51,.10);
  box-shadow: var(--shadow);
}

.about__photo img{
  width:100%;
  height:auto;
  display:block;
  transform: scale(1.02);
  filter: saturate(.92) contrast(.98);
}

.photo__overlay{
  position:absolute;
  inset:0;
  background: radial-gradient(120% 80% at 70% 20%, rgba(234,243,250,.0), rgba(234,243,250,.55));
  pointer-events:none;
}

.facts{
  display:grid;
  grid-template-columns: repeat(2, minmax(0,1fr));
  gap: 12px;
  margin: 18px 0 10px;
}

.fact{
  padding: 14px 14px;
  border-radius: 16px;
  background: var(--soft);
  border: 1px solid rgba(31,60,91,.10);
}

.fact__num{
  display:block;
  font-family: ui-monospace, "SF Mono", Menlo, Monaco, Consolas, "Liberation Mono", monospace;
  color: var(--blue);
  font-weight: 700;
  letter-spacing: -0.02em;
  font-size: 20px;
}

.fact__label{
  display:block;
  margin-top: 4px;
  color: var(--slate);
  font-size: 14px;
}

@media (max-width: 980px){
  .about{ grid-template-columns: 1fr; }
}

/* =========================
   5. Таймлайн
   ========================= */

.timeline{
  position: relative;
  display:grid;
  gap: 14px;
  padding-left: 12px;
}

.timeline__rail{
  position:absolute;
  left: 18px;
  top: 0;
  bottom: 0;
  width: 2px;
  background: linear-gradient(to bottom, rgba(31,60,91,.0), rgba(31,60,91,.18), rgba(31,60,91,.0));
  border-radius: 10px;
}

.step{
  position: relative;
  display:flex;
  gap: 14px;
  align-items: flex-start;
  padding-left: 26px;
}

.dot{
  position:absolute;
  left: 12px;
  top: 22px;
  width: 10px;
  height: 10px;
  border-radius: 999px;
  background: var(--blue);
  opacity: .62;
}

.card{
  flex: 1;
  border-radius: var(--radius);
  background: rgba(255,255,255,.86);
  border: 1px solid rgba(42,46,51,.10);
  box-shadow: 0 16px 44px rgba(31,60,91,.06);
  padding: 18px;
}

/* =========================
   6. Дашборд
   ========================= */

.dashboard{
  display:grid;
  grid-template-columns: repeat(12, 1fr);
  gap: 14px;
}

.tile{
  grid-column: span 6;
  padding: 18px;
  border-radius: var(--radius2);
  border: 1px solid rgba(42,46,51,.10);
  background: rgba(234,243,250,.55);
  box-shadow: 0 18px 50px rgba(31,60,91,.07);
  transition: transform .35s ease, box-shadow .35s ease;
  position: relative;
  overflow:hidden;
}

.tile:hover{
  transform: translateY(-2px);
  box-shadow: 0 26px 70px rgba(31,60,91,.10);
}

.tile--wide{ grid-column: span 12; background: rgba(255,255,255,.82); }

.tile__k{
  color: var(--slate);
  font-size: 12px;
  letter-spacing: .14em;
  text-transform: uppercase;
}

.tile__v{
  margin-top: 8px;
  color: var(--blue);
  font-weight: 600;
  letter-spacing: -0.01em;
}

.tile__hint{
  margin-top: 10px;
  color: var(--slate);
}

.spark{
  position:absolute;
  right:-40px;
  top:-40px;
  width: 180px;
  height: 180px;
  border-radius: 999px;
  background: radial-gradient(circle at 30% 30%, rgba(31,60,91,.18), rgba(31,60,91,0));
  opacity: .6;
}

@media (max-width: 980px){
  .tile{ grid-column: span 12; }
}

/* =========================
   7. Кейсы (accordion на <details>)
   ========================= */

.accordion{
  display: grid;
  gap: 14px;
}

.acc{
  border-radius: var(--radius2);
  border: 1px solid rgba(42,46,51,.10);
  background: rgba(255,255,255,.86);
  box-shadow: 0 18px 50px rgba(31,60,91,.06);
  overflow: hidden;
}

.acc[open]{
  box-shadow: 0 26px 70px rgba(31,60,91,.10);
}

.acc__summary{
  list-style: none;
  cursor: pointer;
  padding: 18px;
  display: grid;
  grid-template-columns: 1fr;
  gap: 6px;
  position: relative;
  user-select: none;
}

.acc__summary::-webkit-details-marker{ display:none; }

.acc__title{
  font-family: ui-serif, "Times New Roman", Times, serif;
  color: var(--blue);
  font-weight: 600;
  letter-spacing: -0.01em;
  font-size: clamp(18px, 2.2vw, 22px);
  line-height: 1.2;
}

.acc__meta{
  color: var(--slate);
  font-size: 14px;
}

.acc__chev{
  position:absolute;
  right: 18px;
  top: 22px;
  width: 10px;
  height: 10px;
  border-right: 2px solid rgba(31,60,91,.55);
  border-bottom: 2px solid rgba(31,60,91,.55);
  transform: rotate(45deg);
  transition: transform .25s ease;
}

.acc[open] .acc__chev{
  transform: rotate(-135deg);
}

.acc__content{
  padding: 0 18px 18px;
  border-top: 1px solid rgba(42,46,51,.08);
}

.acc__grid{
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  gap: 14px;
  padding-top: 14px;
}

.acc__block{
  grid-column: span 6;
  padding: 16px;
  border-radius: var(--radius);
  background: rgba(234,243,250,.55);
  border: 1px solid rgba(31,60,91,.10);
}

.acc__block--wide{
  grid-column: span 12;
  background: rgba(255,255,255,.82);
}

.acc__list{
  margin: 10px 0 0;
  padding-left: 18px;
  color: var(--graphite);
}

.acc__list li{
  margin: 8px 0;
  color: var(--slate);
}

@media (max-width: 980px){
  .acc__block{ grid-column: span 12; }
}

/* =========================
   8. Две колонки
   ========================= */

.two-col{
  display:grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
}

.col{
  padding: 18px;
  border-radius: var(--radius2);
  border: 1px solid rgba(42,46,51,.10);
  box-shadow: 0 18px 50px rgba(31,60,91,.06);
}

.col--for{ background: rgba(255,255,255,.86); }
.col--not{ background: rgba(234,243,250,.62); }

.checklist{
  margin: 12px 0 0;
  padding-left: 0;
  list-style: none;
  color: var(--graphite);
}
.checklist li{ padding: 8px 0; border-top: var(--hairline); }
.checklist li:first-child{ border-top: none; }

@media (max-width: 980px){
  .two-col{ grid-template-columns: 1fr; }
}

/* =========================
   9. Форма
   ========================= */

.contact{
  display:grid;
  grid-template-columns: 1fr 1fr;
  gap: clamp(18px, 4vw, 44px);
  align-items: start;
}

.form{
  border-radius: var(--radius2);
  background: rgba(255,255,255,.86);
  border: 1px solid rgba(42,46,51,.10);
  box-shadow: var(--shadow);
  padding: 18px;
}

label{ display:block; margin-bottom: 12px; }
label span{
  display:block;
  color: var(--slate);
  font-size: 12px;
  letter-spacing: .14em;
  text-transform: uppercase;
  margin-bottom: 8px;
}

input, textarea{
  width:100%;
  box-sizing: border-box;
  border-radius: 14px;
  border: 1px solid rgba(42,46,51,.14);
  padding: 12px 12px;
  font: inherit;
  color: var(--graphite);
  background: rgba(255,255,255,.9);
  outline: none;
  transition: border-color .2s ease, box-shadow .2s ease;
}
input:focus, textarea:focus{
  border-color: rgba(31,60,91,.38);
  box-shadow: 0 0 0 4px rgba(31,60,91,.08);
}

.form__note{
  margin-top: 10px;
  color: var(--slate);
  font-size: 14px;
  min-height: 20px;
}

@media (max-width: 980px){
  .contact{ grid-template-columns: 1fr; }
}

/* =========================
   Footer
   ========================= */

.footer{
  padding: 22px 0 34px;
  border-top: var(--hairline);
  background: var(--white);
}
.footer__row{
  display:flex;
  justify-content: space-between;
  gap: 14px;
  flex-wrap: wrap;
}

/* =========================
   Анимации и “тихие” эффекты
   ========================= */

.reveal{
  opacity: 0;
  transform: translateY(10px);
  transition: opacity .8s ease, transform .8s ease;
  transition-delay: var(--d, 0ms);
}

.reveal.is-visible{
  opacity: 1;
  transform: translateY(0);
}

/* Уважение к reduced motion */
@media (prefers-reduced-motion: reduce){
  .reveal{ transition: none; transform: none; opacity: 1; }
  .tile, .btn{ transition: none; }
}
/* Убрать сетку только на экране 1 (обложка) */
#screen-1 .bg-pattern{
  display: none !important;
}