/* ============================================================
   leonnikolaev.pro — дизайн-токены и стили
   Все цвета, радиусы, тени и отступы — только через переменные.
   Mobile-first: базовые стили для мобильных, адаптация через
   @media (min-width: …).
   ============================================================ */

:root {
  /* Цвета */
  --color-accent: #7c3aed;          /* основной акцент (violet-600) */
  --color-accent-dark: #6d28d9;     /* hover */
  --color-accent-light: #ede9fe;    /* светлая подложка акцента */
  --color-accent-border: #c4b5fd;   /* бордер при hover */
  --color-accent-bright: #a78bfa;   /* акцент на тёмном фоне */
  --color-dark: #0f172a;            /* тёмный фон CTA, заголовки */
  --color-heading: #0f172a;
  --color-body-text: #334155;
  --color-muted: #64748b;
  --color-faint: #94a3b8;
  --color-border: #e2e8f0;
  --color-border-light: #f1f5f9;
  --color-bg: #ffffff;
  --color-bg-alt: #f8fafc;
  --color-tag-bg: #f1f5f9;
  --color-white: #ffffff;
  --color-on-dark-muted: rgba(255, 255, 255, 0.65);

  /* Типографика */
  --font-base: "Inter", system-ui, -apple-system, sans-serif;

  /* Геометрия */
  --radius-base: 20px;
  --radius-md: 14px;
  --radius-sm: 12px;
  --radius-full: 100px;

  /* Тени */
  --shadow-card: 0 1px 3px rgba(15, 23, 42, 0.06), 0 4px 16px rgba(15, 23, 42, 0.05);
  --shadow-hover: 0 12px 32px rgba(15, 23, 42, 0.10);
  --shadow-btn: 0 8px 24px rgba(124, 58, 237, 0.30);

  /* Контейнер */
  --container: 1100px;
  --pad-x: 20px;

  /* Tint-палитра (для карточек проектов и кейсов). */
  --tint-violet-bg:  rgba(124, 58, 237, 0.06);
  --tint-violet-bor: rgba(124, 58, 237, 0.18);
  --tint-violet-acc: #7c3aed;

  --tint-teal-bg:    rgba(13, 148, 136, 0.07);
  --tint-teal-bor:   rgba(13, 148, 136, 0.22);
  --tint-teal-acc:   #0d9488;

  --tint-amber-bg:   rgba(245, 158, 11, 0.08);
  --tint-amber-bor:  rgba(245, 158, 11, 0.24);
  --tint-amber-acc:  #d97706;

  --tint-rose-bg:    rgba(244, 63, 94, 0.06);
  --tint-rose-bor:   rgba(244, 63, 94, 0.20);
  --tint-rose-acc:   #e11d48;

  --tint-blue-bg:    rgba(59, 130, 246, 0.06);
  --tint-blue-bor:   rgba(59, 130, 246, 0.20);
  --tint-blue-acc:   #2563eb;
}

/* ----- Reset ----- */
*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-base);
  color: var(--color-body-text);
  background: var(--color-bg);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

img {
  max-width: 100%;
  display: block;
}

a {
  color: inherit;
}

/* ----- Утилиты ----- */
.container {
  max-width: var(--container);
  margin: 0 auto;
  padding-left: var(--pad-x);
  padding-right: var(--pad-x);
}

.section {
  padding: 56px 0;
}

.section-alt {
  background: var(--color-bg-alt);
}

.section-title {
  font-size: 28px;
  font-weight: 800;
  letter-spacing: -0.02em;
  color: var(--color-heading);
  margin-bottom: 12px;
}

.section-note {
  font-size: 15px;
  color: var(--color-muted);
  max-width: 640px;
  margin-bottom: 32px;
}

/* ----- Hero ----- */
.hero {
  position: relative;
  overflow: hidden;
  padding: 48px 0 56px;
}

.hero-blob {
  position: absolute;
  border-radius: 50%;
  filter: blur(120px);
  pointer-events: none;
  z-index: 0;
}

.hero-blob--violet {
  width: 480px;
  height: 480px;
  left: -160px;
  top: -120px;
  background: rgba(167, 139, 250, 0.25);
}

.hero-blob--amber {
  width: 380px;
  height: 380px;
  right: -120px;
  bottom: -120px;
  background: rgba(252, 211, 77, 0.20);
}

.hero-inner {
  position: relative;
  z-index: 1;
  display: flex;
  flex-direction: column;
  gap: 32px;
}

.hero-photo {
  width: 168px;
  height: 168px;
  border-radius: 50%;
  object-fit: cover;
  object-position: 60% 45%;
  box-shadow: var(--shadow-hover);
}

.hero h1 {
  font-size: 38px;
  font-weight: 900;
  letter-spacing: -0.03em;
  line-height: 1.05;
  color: var(--color-heading);
}

.hero-tagline {
  margin-top: 14px;
  font-size: 18px;
  font-weight: 600;
  color: var(--color-accent);
}

.hero-lead {
  margin-top: 16px;
  font-size: 16px;
  color: var(--color-muted);
  max-width: 560px;
}

.hero-cta {
  margin-top: 28px;
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  border-radius: var(--radius-full);
  padding: 13px 26px;
  font-size: 15px;
  font-weight: 600;
  text-decoration: none;
  transition: transform 0.15s ease, box-shadow 0.15s ease, background 0.15s ease, border-color 0.15s ease;
}

.btn-primary {
  background: var(--color-accent);
  color: var(--color-white);
  box-shadow: var(--shadow-btn);
}

.btn-primary:hover {
  background: var(--color-accent-dark);
  transform: translateY(-2px);
}

.btn-secondary {
  background: var(--color-bg);
  color: var(--color-body-text);
  border: 1px solid var(--color-border);
}

.btn-secondary:hover {
  border-color: var(--color-accent-border);
  color: var(--color-accent);
  transform: translateY(-2px);
}

/* ----- Цифры ----- */
.stats-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
}

.stat-card {
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-base);
  padding: 24px;
  box-shadow: var(--shadow-card);
}

.stat-icon {
  font-size: 24px;
  margin-bottom: 10px;
}

.stat-num {
  font-size: 24px;
  font-weight: 800;
  color: var(--color-heading);
}

.stat-label {
  margin-top: 4px;
  font-size: 14px;
  color: var(--color-muted);
  line-height: 1.45;
}

/* ----- Роли ----- */
.roles-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 20px;
}

.role-card {
  display: flex;
  flex-direction: column;
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-base);
  padding: 28px;
  box-shadow: var(--shadow-card);
  transition: transform 0.15s ease, box-shadow 0.15s ease;
}

.role-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-hover);
}

.role-org {
  font-size: 22px;
  font-weight: 800;
  color: var(--color-heading);
}

.role-title {
  margin-top: 2px;
  font-size: 14px;
  font-weight: 600;
  color: var(--color-accent);
}

.role-desc {
  margin-top: 12px;
  flex: 1;
  font-size: 15px;
  color: var(--color-body-text);
}

.role-link {
  margin-top: 18px;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 15px;
  font-weight: 600;
  color: var(--color-accent);
  text-decoration: none;
}

.role-link:hover {
  color: var(--color-accent-dark);
}

/* ----- Проекты ----- */
.projects-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
}

.project-card {
  --card-bg: var(--color-bg);
  --card-bor: var(--color-border);
  --card-acc: var(--color-accent);
  background: var(--card-bg);
  border: 1px solid var(--card-bor);
  border-radius: var(--radius-base);
  padding: 28px;
  box-shadow: var(--shadow-card);
  transition: box-shadow 0.2s ease, transform 0.2s ease, border-color 0.2s ease;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.project-card:hover {
  border-color: var(--card-acc);
  box-shadow: var(--shadow-hover);
  transform: translateY(-2px);
}

.project-emoji {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 52px;
  height: 52px;
  border-radius: var(--radius-md);
  background: var(--card-bor);
  font-size: 26px;
  line-height: 1;
  margin-bottom: 6px;
}

.project-title {
  font-size: 20px;
  font-weight: 800;
  color: var(--color-heading);
}

.project-desc {
  font-size: 15px;
  color: var(--color-body-text);
  flex: 1;
}

.project-links {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 18px;
  margin-top: 6px;
}

.project-links a {
  font-size: 14px;
  font-weight: 600;
  color: var(--card-acc);
  text-decoration: none;
}

.project-links a:hover {
  opacity: 0.75;
}

.project-soon {
  display: inline-block;
  font-size: 11px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  color: var(--color-muted);
  background: var(--color-tag-bg);
  padding: 3px 10px;
  border-radius: var(--radius-full);
}

/* ----- Кейсы ----- */
.cases-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 14px;
}

.case-card {
  --card-bg: var(--color-bg);
  --card-bor: var(--color-border);
  --card-acc: var(--color-accent);
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 24px;
  background: var(--card-bg);
  border: 1px solid var(--card-bor);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-card);
  text-decoration: none;
  color: inherit;
  transition: box-shadow 0.2s ease, transform 0.2s ease, border-color 0.2s ease;
}

.case-card:hover {
  border-color: var(--card-acc);
  box-shadow: var(--shadow-hover);
  transform: translateY(-2px);
}

.case-emoji {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  border-radius: var(--radius-sm);
  background: var(--card-bor);
  font-size: 22px;
  line-height: 1;
  margin-bottom: 4px;
}

.case-title {
  font-size: 17px;
  font-weight: 800;
  color: var(--color-heading);
}

.case-sub {
  font-size: 12px;
  font-weight: 700;
  color: var(--card-acc);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

/* ----- Tint-модификаторы карточек (общие для .project-card и .case-card) ----- */
.tint-violet { --card-bg: var(--tint-violet-bg); --card-bor: var(--tint-violet-bor); --card-acc: var(--tint-violet-acc); }
.tint-teal   { --card-bg: var(--tint-teal-bg);   --card-bor: var(--tint-teal-bor);   --card-acc: var(--tint-teal-acc); }
.tint-amber  { --card-bg: var(--tint-amber-bg);  --card-bor: var(--tint-amber-bor);  --card-acc: var(--tint-amber-acc); }
.tint-rose   { --card-bg: var(--tint-rose-bg);   --card-bor: var(--tint-rose-bor);   --card-acc: var(--tint-rose-acc); }
.tint-blue   { --card-bg: var(--tint-blue-bg);   --card-bor: var(--tint-blue-bor);   --card-acc: var(--tint-blue-acc); }

.case-desc {
  font-size: 14px;
  color: var(--color-body-text);
  margin-top: 4px;
}

/* ----- Маджонг ----- */
.mahjong-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 12px;
  margin-top: 4px;
}

.mahjong-card {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 14px;
  padding: 16px 20px;
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  text-decoration: none;
  color: inherit;
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.mahjong-card:hover {
  border-color: var(--color-accent-border);
  box-shadow: var(--shadow-card);
}

.mahjong-label {
  font-size: 15px;
  font-weight: 600;
  color: var(--color-heading);
}

.mahjong-link {
  font-size: 14px;
  font-weight: 600;
  color: var(--color-accent);
  white-space: nowrap;
}

/* ----- Соцсети ----- */
.social-groups {
  display: grid;
  grid-template-columns: 1fr;
  gap: 18px;
}

.social-group {
  background: var(--color-bg-alt);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 18px 20px;
}

.social-group-title {
  font-size: 12px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.8px;
  color: var(--color-muted);
  margin-bottom: 10px;
}

.social-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.social-list a {
  display: flex;
  align-items: baseline;
  gap: 10px;
  padding: 8px 10px;
  margin: 0 -10px;
  border-radius: var(--radius-sm);
  text-decoration: none;
  transition: background 0.15s ease;
}

.social-list a:hover {
  background: var(--color-accent-light);
}

.social-kind {
  font-size: 13px;
  font-weight: 700;
  color: var(--color-heading);
  min-width: 92px;
}

.social-handle {
  font-size: 13px;
  color: var(--color-muted);
}

/* ----- Публикации ----- */
.pubs-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
}

.pub-card {
  display: flex;
  flex-direction: column;
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-base);
  padding: 24px;
  text-decoration: none;
  transition: transform 0.15s ease, box-shadow 0.15s ease;
}

.pub-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-hover);
}

.pub-source {
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-accent);
}

.pub-title {
  margin-top: 8px;
  font-size: 16px;
  font-weight: 700;
  color: var(--color-heading);
  line-height: 1.35;
}

.pub-desc {
  margin-top: 8px;
  flex: 1;
  font-size: 14px;
  color: var(--color-muted);
}

.pub-cta {
  margin-top: 14px;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 14px;
  font-weight: 600;
  color: var(--color-accent);
}

/* ----- Как я работаю ----- */
.how-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
}

.how-card {
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-base);
  padding: 24px;
  box-shadow: var(--shadow-card);
}

.how-num {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: var(--radius-sm);
  background: var(--color-accent-light);
  color: var(--color-accent);
  font-size: 16px;
  font-weight: 800;
  margin-bottom: 14px;
}

.how-title {
  font-size: 16px;
  font-weight: 700;
  color: var(--color-heading);
}

.how-desc {
  margin-top: 6px;
  font-size: 14px;
  color: var(--color-muted);
}

/* ----- Контакты / CTA ----- */
.cta {
  position: relative;
  overflow: hidden;
  background: var(--color-dark);
  padding: 72px 0;
  text-align: center;
}

.cta-blob {
  position: absolute;
  border-radius: 50%;
  filter: blur(140px);
  pointer-events: none;
}

.cta-blob--violet {
  width: 480px;
  height: 480px;
  left: 15%;
  top: -200px;
  background: rgba(124, 58, 237, 0.35);
}

.cta-blob--blue {
  width: 420px;
  height: 420px;
  right: 10%;
  bottom: -180px;
  background: rgba(59, 130, 246, 0.25);
}

.cta-inner {
  position: relative;
  z-index: 1;
}

.cta h2 {
  font-size: 32px;
  font-weight: 900;
  letter-spacing: -0.03em;
  line-height: 1.05;
  color: var(--color-white);
}

.cta h2 .accent {
  color: var(--color-accent-bright);
}

.cta-lead {
  margin: 20px auto 0;
  max-width: 520px;
  font-size: 16px;
  color: var(--color-on-dark-muted);
}

.cta .btn-primary {
  margin-top: 32px;
}

.cta-contacts {
  margin-top: 36px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
  font-size: 15px;
  color: var(--color-on-dark-muted);
}

.cta-contacts a {
  color: var(--color-white);
  font-weight: 500;
  text-decoration: none;
}

.cta-contacts a:hover {
  color: var(--color-accent-bright);
}

/* ----- Footer ----- */
.footer {
  background: var(--color-dark);
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  padding: 24px 0;
  text-align: center;
  font-size: 13px;
  color: var(--color-on-dark-muted);
}

/* ============================================================
   Адаптация вверх
   ============================================================ */

@media (min-width: 640px) {
  .stats-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .pubs-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .cases-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .social-groups {
    grid-template-columns: repeat(2, 1fr);
  }

  .section-title {
    font-size: 34px;
  }
}

@media (min-width: 768px) {
  .section {
    padding: 80px 0;
  }

  .hero {
    padding: 80px 0 88px;
  }

  .hero-inner {
    flex-direction: row-reverse;
    align-items: center;
    justify-content: space-between;
    gap: 48px;
  }

  .hero-photo {
    width: 240px;
    height: 240px;
  }

  .hero h1 {
    font-size: 56px;
  }

  .hero-tagline {
    font-size: 20px;
  }

  .hero-lead {
    font-size: 17px;
  }

  .roles-grid,
  .how-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .how-grid {
    grid-template-columns: repeat(3, 1fr);
  }

  .projects-grid {
    grid-template-columns: repeat(3, 1fr);
  }

  .social-groups {
    grid-template-columns: repeat(3, 1fr);
  }

  .cta h2 {
    font-size: 48px;
  }

  .cta-contacts {
    flex-direction: row;
    flex-wrap: wrap;
    justify-content: center;
    gap: 12px 28px;
  }
}

@media (min-width: 1024px) {
  .stats-grid {
    grid-template-columns: repeat(4, 1fr);
  }

  .hero-photo {
    width: 280px;
    height: 280px;
  }
}