/* ============================================
   Time Saver AI — Stylesheet
   Design System: Light Minimalism + Teal Accent
   ============================================ */

/* ---------- CSS Variables (Design Tokens) ---------- */
:root {
  /* Colors */
  --color-bg-primary: #ffffff;
  --color-bg-secondary: #f7f9fc;
  --color-bg-accent: #e6fffa;
  --color-text-primary: #1a2332;
  --color-text-secondary: #6b7785;
  --color-accent: #0ea5a4;
  --color-accent-hover: #0d8b8a;
  --color-accent-soft: #ccfbf1;
  --color-border: #e5e9f0;
  --color-white: #ffffff;

  /* Typography */
  --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-weight-regular: 400;
  --font-weight-medium: 500;
  --font-weight-semibold: 600;
  --font-weight-bold: 700;
  --font-weight-extrabold: 800;

  /* Spacing */
  --container-width: 1200px;
  --section-spacing: 120px;
  --section-spacing-mobile: 64px;

  /* Radius */
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;

  /* Shadows */
  --shadow-sm: 0 1px 3px rgba(26, 35, 50, 0.06);
  --shadow-md: 0 4px 12px rgba(26, 35, 50, 0.08);
  --shadow-lg: 0 12px 32px rgba(26, 35, 50, 0.10);

  /* Transitions */
  --transition-fast: 150ms ease;
  --transition-base: 250ms ease;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-family);
  font-weight: var(--font-weight-regular);
  font-size: 16px;
  line-height: 1.6;
  color: var(--color-text-primary);
  background-color: var(--color-bg-primary);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

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

a {
  color: var(--color-accent);
  text-decoration: none;
  transition: color var(--transition-fast);
}

a:hover {
  color: var(--color-accent-hover);
}

ul {
  list-style: none;
}

button {
  font-family: inherit;
  cursor: pointer;
  border: none;
  background: none;
}

/* ---------- Container ---------- */
.container {
  width: 100%;
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 24px;
}

@media (min-width: 768px) {
  .container {
    padding: 0 32px;
  }
}

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 14px 28px;
  font-size: 16px;
  font-weight: var(--font-weight-semibold);
  border-radius: var(--radius-md);
  transition: all var(--transition-base);
  white-space: nowrap;
  cursor: pointer;
  text-decoration: none;
}

.btn:hover {
  transform: translateY(-1px);
}

.btn--primary {
  background-color: var(--color-accent);
  color: var(--color-white);
  box-shadow: 0 4px 12px rgba(14, 165, 164, 0.25);
}

.btn--primary:hover {
  background-color: var(--color-accent-hover);
  color: var(--color-white);
  box-shadow: 0 6px 16px rgba(14, 165, 164, 0.35);
}

.btn--secondary {
  background-color: var(--color-white);
  color: var(--color-accent);
  border: 2px solid var(--color-accent);
}

.btn--secondary:hover {
  background-color: var(--color-accent-soft);
  color: var(--color-accent-hover);
}

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

.btn--white:hover {
  background-color: var(--color-bg-secondary);
  color: var(--color-accent-hover);
}

.btn--ghost {
  background-color: transparent;
  color: var(--color-white);
  border: 2px solid var(--color-white);
}

.btn--ghost:hover {
  background-color: rgba(255, 255, 255, 0.1);
  color: var(--color-white);
}

/* ---------- Header ---------- */
.header {
  position: sticky;
  top: 0;
  z-index: 100;
  background-color: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--color-border);
}

.header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 16px;
  padding-bottom: 16px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 18px;
  font-weight: var(--font-weight-bold);
  color: var(--color-text-primary);
}

.logo:hover {
  color: var(--color-text-primary);
}

.logo__mark {
  color: var(--color-accent);
  font-size: 14px;
}

.nav__link {
  font-size: 14px;
  font-weight: var(--font-weight-semibold);
  color: var(--color-text-secondary);
  padding: 8px 16px;
  border-radius: var(--radius-sm);
  transition: all var(--transition-fast);
}

.nav__link:hover {
  color: var(--color-accent);
  background-color: var(--color-accent-soft);
}

/* ---------- Hero ---------- */
.hero {
  padding: 80px 0 var(--section-spacing);
  background: linear-gradient(180deg, var(--color-bg-primary) 0%, var(--color-bg-secondary) 100%);
}

.hero__inner {
  display: grid;
  grid-template-columns: 1fr;
  gap: 48px;
  align-items: center;
}

@media (min-width: 1024px) {
  .hero__inner {
    grid-template-columns: 1.1fr 1fr;
    gap: 64px;
  }
}

.hero__title {
  font-size: 40px;
  font-weight: var(--font-weight-extrabold);
  line-height: 1.15;
  letter-spacing: -0.02em;
  color: var(--color-text-primary);
  margin-bottom: 24px;
}

@media (min-width: 768px) {
  .hero__title {
    font-size: 56px;
  }
}

.hero__subtitle {
  font-size: 18px;
  line-height: 1.6;
  color: var(--color-text-secondary);
  margin-bottom: 36px;
  max-width: 540px;
}

@media (min-width: 768px) {
  .hero__subtitle {
    font-size: 20px;
  }
}

.hero__cta {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

/* Hero Network (AI Neural Visualization) */
.hero__visual {
  position: relative;
  display: flex;
  justify-content: center;
  align-items: center;
}

.hero__network {
  width: 100%;
  max-width: 440px;
  aspect-ratio: 1 / 1;
  position: relative;
  padding: 20px;
}

.network-svg {
  width: 100%;
  height: 100%;
  display: block;
  overflow: visible;
}

.network-connections line {
  stroke-dasharray: 4 4;
  animation: dash-flow 20s linear infinite;
}

.network-connections line:nth-child(odd) {
  animation-direction: reverse;
  animation-duration: 25s;
}

@keyframes dash-flow {
  to {
    stroke-dashoffset: -100;
  }
}

.node-glow {
  transform-origin: center;
  transform-box: fill-box;
  animation: node-pulse 3s ease-in-out infinite;
}

.node-glow--outer {
  animation-duration: 4s;
  animation-delay: 0.5s;
}

@keyframes node-pulse {
  0%, 100% {
    transform: scale(1);
    opacity: 0.3;
  }
  50% {
    transform: scale(1.4);
    opacity: 0.1;
  }
}

.network-nodes circle:not(.node-glow) {
  transition: all var(--transition-base);
  cursor: pointer;
}

.network-nodes circle:not(.node-glow):hover {
  r: 14;
  opacity: 1;
}

.pulse {
  filter: drop-shadow(0 0 4px #0EA5A4);
}

/* ---------- Section Header ---------- */
.section-header {
  text-align: center;
  margin-bottom: 64px;
}

.section-title {
  font-size: 32px;
  font-weight: var(--font-weight-extrabold);
  letter-spacing: -0.02em;
  color: var(--color-text-primary);
  margin-bottom: 12px;
}

@media (min-width: 768px) {
  .section-title {
    font-size: 40px;
  }
}

.section-subtitle {
  font-size: 18px;
  color: var(--color-text-secondary);
  max-width: 600px;
  margin: 0 auto;
}

/* ---------- Services ---------- */
.services {
  padding: var(--section-spacing) 0;
  background-color: var(--color-bg-primary);
}

.services__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 24px;
}

@media (min-width: 768px) {
  .services__grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

.card {
  background-color: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 32px;
  transition: all var(--transition-base);
}

.card:hover {
  border-color: var(--color-accent);
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
}

.card__icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 56px;
  height: 56px;
  border-radius: var(--radius-md);
  background-color: var(--color-accent-soft);
  color: var(--color-accent);
  margin-bottom: 24px;
}

.card__icon svg {
  width: 28px;
  height: 28px;
}

.card__title {
  font-size: 20px;
  font-weight: var(--font-weight-bold);
  color: var(--color-text-primary);
  margin-bottom: 12px;
}

.card__text {
  font-size: 16px;
  line-height: 1.6;
  color: var(--color-text-secondary);
}

/* ---------- Case ---------- */
.case {
  padding: var(--section-spacing) 0;
  background-color: var(--color-bg-secondary);
}

.case__card {
  background-color: var(--color-white);
  border-radius: var(--radius-lg);
  padding: 48px;
  box-shadow: var(--shadow-md);
  position: relative;
  overflow: hidden;
}

.case__card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--color-accent), var(--color-accent-hover));
}

.case__badge {
  display: inline-block;
  padding: 6px 14px;
  font-size: 12px;
  font-weight: var(--font-weight-semibold);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--color-accent);
  background-color: var(--color-accent-soft);
  border-radius: 999px;
  margin-bottom: 16px;
}

.case__title {
  font-size: 32px;
  font-weight: var(--font-weight-extrabold);
  letter-spacing: -0.02em;
  color: var(--color-text-primary);
  margin-bottom: 40px;
}

.case__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 40px;
  align-items: start;
}

@media (min-width: 1024px) {
  .case__grid {
    grid-template-columns: 1fr 1.2fr;
    gap: 56px;
  }
}

.case__visual {
  position: sticky;
  top: 100px;
}

.case__mockup {
  background-color: var(--color-bg-secondary);
  border-radius: var(--radius-lg);
  padding: 24px;
  margin-bottom: 20px;
}

.case-mockup {
  background-color: var(--color-white);
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
}

.case-mockup__header {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 14px 16px;
  background-color: var(--color-bg-secondary);
  border-bottom: 1px solid var(--color-border);
}

.case-mockup__avatar {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background-color: var(--color-accent-soft);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 16px;
}

.case-mockup__name {
  font-size: 14px;
  font-weight: var(--font-weight-semibold);
  color: var(--color-text-primary);
  flex: 1;
}

.case-mockup__status {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background-color: #10b981;
}

.case-mockup__body {
  padding: 16px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.bubble {
  padding: 10px 14px;
  border-radius: var(--radius-md);
  font-size: 13px;
  line-height: 1.5;
  max-width: 85%;
}

.bubble--user {
  background-color: var(--color-accent);
  color: var(--color-white);
  align-self: flex-end;
  border-bottom-right-radius: 4px;
}

.bubble--ai {
  background-color: var(--color-bg-secondary);
  color: var(--color-text-primary);
  align-self: flex-start;
  border-bottom-left-radius: 4px;
}

.case__metric {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
  padding: 20px;
  background: linear-gradient(135deg, var(--color-accent), var(--color-accent-hover));
  border-radius: var(--radius-md);
  color: var(--color-white);
  font-weight: var(--font-weight-bold);
}

.case__metric-from {
  font-size: 18px;
  opacity: 0.8;
  text-decoration: line-through;
}

.case__metric-arrow {
  font-size: 24px;
}

.case__metric-to {
  font-size: 28px;
  font-weight: var(--font-weight-extrabold);
}

.case__content {
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.case__block {
  border-left: 3px solid var(--color-accent);
  padding-left: 20px;
}

.case__label {
  font-size: 14px;
  font-weight: var(--font-weight-bold);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--color-accent);
  margin-bottom: 8px;
}

.case__block p {
  font-size: 16px;
  line-height: 1.7;
  color: var(--color-text-secondary);
}

.case__link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 15px;
  font-weight: var(--font-weight-semibold);
  color: var(--color-accent);
  align-self: flex-start;
  margin-top: 8px;
}

.case__link:hover {
  gap: 10px;
}

/* ---------- About ---------- */
.about {
  padding: var(--section-spacing) 0;
  background-color: var(--color-bg-primary);
}

.about__inner {
  display: grid;
  grid-template-columns: 1fr;
  gap: 48px;
  align-items: center;
}

@media (min-width: 1024px) {
  .about__inner {
    grid-template-columns: 1fr 1.2fr;
    gap: 80px;
  }
}

.about__visual {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
}

.about__photo {
  width: 240px;
  height: 240px;
  border-radius: 50%;
  overflow: hidden;
  background-color: var(--color-accent-soft);
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 8px 24px rgba(14, 165, 164, 0.15);
}

@media (min-width: 768px) {
  .about__photo {
    width: 280px;
    height: 280px;
  }
}

.about__photo-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.about__label {
  display: inline-block;
  padding: 6px 14px;
  font-size: 12px;
  font-weight: var(--font-weight-semibold);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--color-accent);
  background-color: var(--color-accent-soft);
  border-radius: 999px;
  margin-bottom: 16px;
}

.about__title {
  font-size: 36px;
  font-weight: var(--font-weight-extrabold);
  letter-spacing: -0.02em;
  color: var(--color-text-primary);
  margin-bottom: 16px;
}

@media (min-width: 768px) {
  .about__title {
    font-size: 44px;
  }
}

.about__role {
  font-size: 16px;
  font-weight: var(--font-weight-semibold);
  color: var(--color-accent);
  margin-bottom: 24px;
}

.about__bio {
  font-size: 17px;
  line-height: 1.7;
  color: var(--color-text-secondary);
  margin-bottom: 32px;
}

.about__tools {
  font-size: 15px;
  line-height: 1.6;
  color: var(--color-text-secondary);
  margin-top: 0;
  padding: 16px 20px;
  background-color: var(--color-bg-secondary);
  border-radius: var(--radius-md);
  border-left: 3px solid var(--color-accent);
}

.about__approach-title {
  font-size: 18px;
  font-weight: var(--font-weight-bold);
  color: var(--color-text-primary);
  margin-bottom: 20px;
}

.about__approach-title:not(:first-of-type) {
  margin-top: 32px;
}

.about__list {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.about__list li {
  display: flex;
  gap: 14px;
  align-items: flex-start;
  font-size: 16px;
  line-height: 1.6;
  color: var(--color-text-secondary);
}

.about__list strong {
  color: var(--color-text-primary);
  font-weight: var(--font-weight-semibold);
}

.about__check {
  flex-shrink: 0;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 24px;
  height: 24px;
  border-radius: 50%;
  background-color: var(--color-accent);
  color: var(--color-white);
  font-size: 14px;
  font-weight: var(--font-weight-bold);
}

/* ---------- CTA ---------- */
.cta {
  padding: var(--section-spacing) 0;
  background: linear-gradient(135deg, var(--color-accent) 0%, var(--color-accent-hover) 100%);
  color: var(--color-white);
}

.cta__inner {
  text-align: center;
  max-width: 720px;
  margin: 0 auto;
}

.cta__title {
  font-size: 36px;
  font-weight: var(--font-weight-extrabold);
  letter-spacing: -0.02em;
  margin-bottom: 16px;
}

@media (min-width: 768px) {
  .cta__title {
    font-size: 48px;
  }
}

.cta__subtitle {
  font-size: 18px;
  line-height: 1.6;
  opacity: 0.95;
  margin-bottom: 40px;
}

@media (min-width: 768px) {
  .cta__subtitle {
    font-size: 20px;
  }
}

.cta__buttons {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  justify-content: center;
}

.cta__note {
  margin-top: 28px;
  font-size: 14px;
  line-height: 1.5;
  opacity: 0.85;
  max-width: 480px;
  margin-left: auto;
  margin-right: auto;
}

.cta .btn--white:hover {
  color: var(--color-accent);
}

/* ---------- Footer ---------- */
.footer {
  padding: 32px 0;
  background-color: var(--color-bg-secondary);
  border-top: 1px solid var(--color-border);
}

.footer__inner {
  text-align: center;
}

.footer p {
  font-size: 14px;
  color: var(--color-text-secondary);
}

.footer__meta {
  font-size: 14px;
  line-height: 1.6;
  color: var(--color-text-secondary);
  max-width: 720px;
  margin: 0 auto;
}

/* ---------- Scroll Animations ---------- */
.fade-in {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 600ms ease, transform 600ms ease;
}

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

/* ---------- Responsive Section Spacing ---------- */
@media (max-width: 767px) {
  :root {
    --section-spacing: var(--section-spacing-mobile);
  }

  .case__card {
    padding: 32px 24px;
  }

  .case__title {
    font-size: 26px;
  }

  .about__title {
    font-size: 32px;
  }
}

/* ============ СЕКЦИЯ КЕЙСЫ ============ */
.cases {
  padding: 80px 0;
  background-color: #F9FAFB; /* Светлый фон для выделения секции */
}

.cases__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 32px;
  margin-top: 48px;
}

@media (min-width: 768px) {
  .cases__grid {
    grid-template-columns: repeat(2, 1fr); /* Две карточки в ряд на планшетах и десктопе */
  }
}

.case-card {
  background: #FFFFFF;
  border-radius: 16px;
  padding: 32px;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.05);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
  display: flex;
  flex-direction: column;
}

.case-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 8px 30px rgba(14, 165, 164, 0.15); /* Твой teal-акцент */
}

.case-card__header {
  margin-bottom: 16px;
}

.case-card__tag {
  display: inline-block;
  background-color: #E0F2F1;
  color: #0EA5A4;
  font-size: 12px;
  font-weight: 600;
  padding: 4px 12px;
  border-radius: 20px;
  margin-bottom: 12px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.case-card__title {
  font-size: 22px;
  font-weight: 700;
  color: #111827;
  margin: 0;
}

.case-card__description {
  font-size: 15px;
  line-height: 1.6;
  color: #4B5563;
  margin-bottom: 20px;
  flex-grow: 1;
}

.case-card__results {
  list-style: none;
  padding: 0;
  margin: 0 0 24px 0;
}

.case-card__results li {
  font-size: 14px;
  line-height: 1.5;
  color: #374151;
  margin-bottom: 10px;
}

.case-card__tech {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: auto;
  padding-top: 20px;
  border-top: 1px solid #E5E7EB;
}

.case-card__tech span {
  font-size: 12px;
  color: #6B7280;
  background-color: #F3F4F6;
  padding: 4px 10px;
  border-radius: 6px;
}

.case-card--placeholder {
  border: 2px dashed #D1D5DB;
  background-color: transparent;
  box-shadow: none;
  justify-content: center;
  align-items: center;
  text-align: center;
}

.case-card--placeholder:hover {
  transform: none;
  border-color: #0EA5A4;
}

.case-card--placeholder .case-card__tag {
  background-color: #F3F4F6;
  color: #6B7280;
}

/* Галерея скриншотов внутри карточки кейса */
.case-card__gallery {
  margin-top: 20px;
  margin-bottom: 20px;
}

.case-card__gallery-row {
  display: flex;
  gap: 12px;
  margin-bottom: 12px;
}

.case-card__gallery-row:last-child {
  margin-bottom: 0;
}

.case-card__img {
  width: 50%;
  height: auto;
  border-radius: 8px;
  border: 1px solid #E5E7EB;
  box-shadow: 0 2px 8px rgba(0,0,0,0.05);
  object-fit: cover;
  transition: transform 0.2s ease;
  cursor: pointer;
}

.case-card__img:hover {
  transform: scale(1.02);
  box-shadow: 0 4px 16px rgba(0,0,0,0.1);
}

/* На планшетах и телефонах - в одну колонку */
@media (max-width: 768px) {
  .case-card__gallery-row {
    flex-direction: column;
  }
  .case-card__img {
    width: 100%;
  }
}

/* ============ ВЫРАВНИВАЕМ ШРИФТЫ ДЛЯ ВСЕХ ЭКРАНОВ ============ */

/* Шапка сайта (Название и Telegram) */
.header__logo,
.header__link {
  font-size: 30px; /* Оптимальный размер для шапки */
  font-weight: 600;
}

/* Главный заголовок («Верните себе время...») */
.hero__title {
  font-size: 40px; /* Крупно, но не гигантски. Можно поставить 40px или 56px */
  line-height: 1.1;
  margin-bottom: 24px;
}

/* Подзаголовок под главным заголовком */
.hero__subtitle,
.hero__lead {
  font-size: 20px; /* Удобно читать */
  line-height: 1.5;
  max-width: 600px; /* Чтобы текст не растягивался на весь экран */
}

/* ============ ИСПРАВЛЕНИЕ РАЗМЕРА ЛОГОТИПА ============ */
.logo,
.logo__text {
  font-size: 36px; /* Увеличиваем до нужного размера */
  font-weight: 700; /* Делаем чуть жирнее, чтобы смотрелось чётко */
  text-decoration: none; /* Гарантированно убираем подчеркивание */
  color: inherit; /* Наследует цвет текста (обычно черный или белый) */
}

/* Если нужно, чтобы точка (●) тоже была такого же размера и цвета */
.logo__mark {
  font-size: 36px;
  color: #0EA5A4; /* Твой фирменный бирюзовый цвет */
}