/* =====================================================
   Deep Human Interviews — Main Styles
   Mobile-first, минималистичный, тёплый дизайн
   ===================================================== */

/* ----- CSS Variables ----- */
:root {
  /* Цветовая палитра */
  --color-bg: #FDFBF7;
  --color-bg-alt: #F7F4EE;
  --color-text: #2D2A26;
  --color-text-light: #5A5651;
  --color-text-muted: #8A8580;
  --color-accent: #C4A484;
  --color-accent-hover: #B08A68;
  --color-secondary: #E8E4DE;
  --color-border: #DDD8D0;
  --color-white: #FFFFFF;
  
  /* Типографика */
  --font-heading: 'Cormorant Garamond', Georgia, serif;
  --font-body: 'Source Sans 3', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  
  /* Размеры шрифтов (mobile-first) */
  --fs-xs: 0.75rem;     /* 12px */
  --fs-sm: 0.875rem;    /* 14px */
  --fs-base: 1rem;      /* 16px */
  --fs-md: 1.125rem;    /* 18px */
  --fs-lg: 1.25rem;     /* 20px */
  --fs-xl: 1.5rem;      /* 24px */
  --fs-2xl: 2rem;       /* 32px */
  --fs-3xl: 2.5rem;     /* 40px */
  --fs-4xl: 3rem;       /* 48px */
  
  /* Отступы */
  --space-xs: 0.25rem;  /* 4px */
  --space-sm: 0.5rem;   /* 8px */
  --space-md: 1rem;     /* 16px */
  --space-lg: 1.5rem;   /* 24px */
  --space-xl: 2rem;     /* 32px */
  --space-2xl: 3rem;    /* 48px */
  --space-3xl: 4rem;    /* 64px */
  --space-4xl: 6rem;    /* 96px */
  
  /* Радиусы */
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  --radius-full: 9999px;
  
  /* Тени */
  --shadow-sm: 0 1px 2px rgba(45, 42, 38, 0.05);
  --shadow-md: 0 4px 12px rgba(45, 42, 38, 0.08);
  --shadow-lg: 0 8px 24px rgba(45, 42, 38, 0.12);
  
  /* Анимации */
  --transition-fast: 150ms ease;
  --transition-base: 300ms ease;
  --transition-slow: 400ms ease;
  
  /* Header высота */
  --header-height: 64px;
}

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

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

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

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

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

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

ul, ol {
  list-style: none;
}

/* ----- Typography ----- */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  font-weight: 500;
  line-height: 1.2;
  color: var(--color-text);
}

h1 { font-size: var(--fs-2xl); }
h2 { font-size: var(--fs-xl); }
h3 { font-size: var(--fs-lg); }

@media (min-width: 769px) {
  h1 { font-size: var(--fs-4xl); }
  h2 { font-size: var(--fs-3xl); }
  h3 { font-size: var(--fs-2xl); }
}

p {
  margin-bottom: var(--space-md);
}

p:last-child {
  margin-bottom: 0;
}

/* ----- Container ----- */
.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--space-md);
}

@media (min-width: 769px) {
  .container {
    padding: 0 var(--space-xl);
  }
}

/* ----- Buttons ----- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-sm);
  padding: var(--space-md) var(--space-xl);
  font-family: var(--font-body);
  font-size: var(--fs-base);
  font-weight: 600;
  line-height: 1;
  border-radius: var(--radius-full);
  transition: all var(--transition-base);
  text-align: center;
  min-height: 52px;
}

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

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

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

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

.btn--ghost {
  background-color: transparent;
  color: var(--color-accent);
  padding: var(--space-sm) var(--space-md);
  min-height: auto;
}

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

.btn--large {
  padding: var(--space-lg) var(--space-2xl);
  font-size: var(--fs-md);
  min-height: 60px;
}

/* ----- Section Base ----- */
.section {
  padding: var(--space-3xl) 0;
}

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

.section__header {
  text-align: center;
  margin-bottom: var(--space-2xl);
}

.section__title {
  margin-bottom: var(--space-md);
}

.section__subtitle {
  color: var(--color-text-light);
  font-size: var(--fs-md);
  max-width: 600px;
  margin: 0 auto;
}

/* ----- Header ----- */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--header-height);
  background-color: rgba(253, 251, 247, 0.95);
  backdrop-filter: blur(10px);
  z-index: 1000;
  border-bottom: 1px solid var(--color-border);
}

.header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
}

.header__logo {
  font-family: var(--font-heading);
  font-size: var(--fs-lg);
  font-weight: 600;
  color: var(--color-text);
}

.header__nav {
  display: none;
}

@media (min-width: 769px) {
  .header__nav {
    display: flex;
    align-items: center;
    gap: var(--space-xl);
  }
}

.header__nav-link {
  font-size: var(--fs-sm);
  color: var(--color-text-light);
  transition: color var(--transition-fast);
}

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

.header__cta {
  display: none;
}

@media (min-width: 769px) {
  .header__cta {
    display: inline-flex;
  }
}

.header__menu-btn {
  display: flex;
  flex-direction: column;
  gap: 5px;
  padding: var(--space-sm);
}

@media (min-width: 769px) {
  .header__menu-btn {
    display: none;
  }
}

.header__menu-btn span {
  display: block;
  width: 24px;
  height: 2px;
  background-color: var(--color-text);
  transition: all var(--transition-fast);
}

/* Mobile Menu */
.mobile-menu {
  position: fixed;
  top: var(--header-height);
  left: 0;
  right: 0;
  bottom: 0;
  background-color: var(--color-bg);
  padding: var(--space-xl);
  transform: translateX(100%);
  transition: transform var(--transition-base);
  z-index: 999;
}

.mobile-menu.is-open {
  transform: translateX(0);
}

.mobile-menu__nav {
  display: flex;
  flex-direction: column;
  gap: var(--space-lg);
}

.mobile-menu__link {
  font-size: var(--fs-lg);
  color: var(--color-text);
  padding: var(--space-sm) 0;
}

.mobile-menu__cta {
  margin-top: var(--space-xl);
}

/* ----- Hero Section ----- */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: calc(var(--header-height) + var(--space-2xl)) var(--space-md) var(--space-2xl);
}

.hero__content {
  max-width: 700px;
}

.hero__title {
  font-size: var(--fs-2xl);
  margin-bottom: var(--space-lg);
  font-weight: 400;
  font-style: italic;
}

@media (min-width: 769px) {
  .hero__title {
    font-size: var(--fs-4xl);
  }
}

.hero__subtitle {
  font-size: var(--fs-md);
  color: var(--color-text-light);
  margin-bottom: var(--space-2xl);
  line-height: 1.8;
}

@media (min-width: 769px) {
  .hero__subtitle {
    font-size: var(--fs-lg);
  }
}

.hero__actions {
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
  align-items: center;
}

.hero__secondary-cta {
  color: var(--color-accent);
  font-size: var(--fs-sm);
  display: inline-flex;
  align-items: center;
  gap: var(--space-xs);
  transition: color var(--transition-fast);
}

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

/* ----- About Section ----- */
.about {
  padding: var(--space-3xl) 0;
}

.about__inner {
  display: grid;
  gap: var(--space-2xl);
}

@media (min-width: 769px) {
  .about__inner {
    grid-template-columns: 1fr 1.5fr;
    gap: var(--space-3xl);
    align-items: center;
  }
}

.about__image-wrapper {
  position: relative;
}

.about__image {
  width: 100%;
  max-width: 400px;
  margin: 0 auto;
  aspect-ratio: 3/4;
  object-fit: cover;
  border-radius: var(--radius-lg);
  background-color: var(--color-secondary);
}

.about__content {
  display: flex;
  flex-direction: column;
  gap: var(--space-xl);
}

.about__quote {
  position: relative;
  padding-left: var(--space-lg);
  border-left: 3px solid var(--color-accent);
  font-family: var(--font-heading);
  font-size: var(--fs-xl);
  font-style: italic;
  color: var(--color-text);
  line-height: 1.5;
}

@media (min-width: 769px) {
  .about__quote {
    font-size: var(--fs-2xl);
  }
}

.about__text {
  color: var(--color-text-light);
  font-size: var(--fs-md);
  line-height: 1.8;
}

.about__signature {
  font-family: var(--font-heading);
  font-size: var(--fs-lg);
  font-style: italic;
  color: var(--color-text);
}

/* ----- Formats Section ----- */
.formats {
  background-color: var(--color-bg-alt);
  padding: var(--space-3xl) 0;
}

.formats__grid {
  display: grid;
  gap: var(--space-lg);
}

@media (min-width: 769px) {
  .formats__grid {
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-xl);
  }
}

/* Service Card */
.service-card {
  background-color: var(--color-white);
  border-radius: var(--radius-lg);
  padding: var(--space-xl);
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
  box-shadow: var(--shadow-sm);
  transition: all var(--transition-base);
  position: relative;
}

.service-card:hover {
  box-shadow: var(--shadow-lg);
  transform: translateY(-4px);
}

.service-card--premium {
  border: 2px solid var(--color-accent);
}

.service-card__badges {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-sm);
}

.badge {
  display: inline-flex;
  align-items: center;
  padding: var(--space-xs) var(--space-sm);
  font-size: var(--fs-xs);
  border-radius: var(--radius-full);
  background-color: var(--color-secondary);
  color: var(--color-text);
}

.badge--limited {
  background-color: #FEF3E2;
  color: #B45309;
}

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

.service-card__title {
  font-family: var(--font-heading);
  font-size: var(--fs-xl);
}

.service-card__subtitle {
  font-size: var(--fs-sm);
  color: var(--color-text-muted);
  margin-top: calc(-1 * var(--space-sm));
}

.service-card__description {
  color: var(--color-text-light);
  font-size: var(--fs-sm);
  line-height: 1.6;
}

.service-card__format {
  font-size: var(--fs-sm);
  color: var(--color-text-muted);
  font-style: italic;
}

.service-card__price {
  font-family: var(--font-heading);
  font-size: var(--fs-2xl);
  color: var(--color-text);
}

.service-card__features {
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
  padding-top: var(--space-md);
  border-top: 1px solid var(--color-border);
}

.service-card__feature {
  display: flex;
  align-items: flex-start;
  gap: var(--space-sm);
  font-size: var(--fs-sm);
  color: var(--color-text-light);
}

.service-card__feature::before {
  content: '✓';
  color: var(--color-accent);
  font-weight: 600;
  flex-shrink: 0;
}

.service-card__action {
  margin-top: auto;
  padding-top: var(--space-md);
}

.service-card__action .btn {
  width: 100%;
}

/* ----- Testimonials Section ----- */
.testimonials {
  padding: var(--space-3xl) 0;
}

.testimonials__grid {
  display: grid;
  gap: var(--space-lg);
  margin-bottom: var(--space-2xl);
}

@media (min-width: 769px) {
  .testimonials__grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

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

.testimonial-card {
  background-color: var(--color-bg-alt);
  padding: var(--space-xl);
  border-radius: var(--radius-lg);
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
}

.testimonial-card__text {
  font-family: var(--font-body);
  font-size: var(--fs-sm);
  font-style: normal;
  line-height: 1.6;
  color: var(--color-text);
  position: relative;
  padding-left: var(--space-lg);
}

@media (min-width: 769px) {
  .testimonial-card__text {
    font-size: var(--fs-base);
  }
}

.testimonial-card__text::before {
  content: '«';
  font-family: var(--font-heading);
  font-size: var(--fs-xl);
  color: var(--color-accent);
  position: absolute;
  top: 0;
  left: 0;
  opacity: 0.7;
  line-height: 1;
}

.testimonial-card__author {
  font-weight: 600;
  color: var(--color-text);
}

.testimonial-card__format {
  font-size: var(--fs-sm);
  color: var(--color-text-muted);
}

.testimonials__more {
  text-align: center;
}

.testimonials__link {
  color: var(--color-accent);
  font-size: var(--fs-md);
  display: inline-flex;
  align-items: center;
  gap: var(--space-sm);
  transition: color var(--transition-fast);
}

.testimonials__link:hover {
  color: var(--color-accent-hover);
}

/* ----- FAQ Section ----- */
.faq {
  background-color: var(--color-bg-alt);
  padding: var(--space-3xl) 0;
}

.faq__list {
  max-width: 800px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
}

.faq-item {
  background-color: var(--color-white);
  border-radius: var(--radius-md);
  overflow: hidden;
}

.faq-item__question {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-md);
  padding: var(--space-lg);
  font-family: var(--font-body);
  font-size: var(--fs-base);
  font-weight: 600;
  text-align: left;
  color: var(--color-text);
  background-color: var(--color-white);
  transition: background-color var(--transition-fast);
}

.faq-item__question:hover {
  background-color: var(--color-bg-alt);
}

.faq-item__icon {
  flex-shrink: 0;
  width: 24px;
  height: 24px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-accent);
  transition: transform var(--transition-base);
}

.faq-item.is-open .faq-item__icon {
  transform: rotate(45deg);
}

.faq-item__answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height var(--transition-base);
}

.faq-item__answer-inner {
  padding: 0 var(--space-lg) var(--space-lg);
  color: var(--color-text-light);
  line-height: 1.7;
}

.faq-item__answer-inner a {
  color: var(--color-accent);
  text-decoration: underline;
  text-underline-offset: 3px;
  transition: color var(--transition-fast);
}

.faq-item__answer-inner a:hover {
  color: var(--color-accent-hover);
}

/* ----- Final CTA Section ----- */
.final-cta {
  padding: var(--space-4xl) 0;
  text-align: center;
}

.final-cta__title {
  margin-bottom: var(--space-md);
}

.final-cta__text {
  color: var(--color-text-light);
  font-size: var(--fs-md);
  max-width: 500px;
  margin: 0 auto var(--space-2xl);
}

.final-cta__actions {
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
  align-items: center;
}

@media (min-width: 481px) {
  .final-cta__actions {
    flex-direction: row;
    justify-content: center;
  }
}

.final-cta__note {
  margin-top: var(--space-xl);
  font-size: var(--fs-sm);
  color: var(--color-text-muted);
  font-style: italic;
  max-width: 500px;
  margin-left: auto;
  margin-right: auto;
}

/* ----- Footer ----- */
.footer {
  background-color: var(--color-bg-alt);
  padding: var(--space-3xl) 0 var(--space-xl);
  border-top: 1px solid var(--color-border);
}

.footer__inner {
  display: grid;
  gap: var(--space-2xl);
}

@media (min-width: 769px) {
  .footer__inner {
    grid-template-columns: 2fr 1fr 1fr;
  }
}

.footer__brand {
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
}

.footer__logo {
  font-family: var(--font-heading);
  font-size: var(--fs-xl);
  font-weight: 600;
}

.footer__tagline {
  color: var(--color-text-light);
  font-size: var(--fs-sm);
  line-height: 1.6;
}

.footer__section-title {
  font-family: var(--font-body);
  font-size: var(--fs-sm);
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: var(--space-md);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.footer__nav {
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
}

.footer__link {
  font-size: var(--fs-sm);
  color: var(--color-text-light);
  transition: color var(--transition-fast);
}

.footer__link:hover {
  color: var(--color-accent);
}

.footer__bottom {
  margin-top: var(--space-2xl);
  padding-top: var(--space-xl);
  border-top: 1px solid var(--color-border);
  text-align: center;
}

.footer__legal {
  font-size: var(--fs-xs);
  color: var(--color-text-muted);
  line-height: 1.8;
}

/* ----- Utilities ----- */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.text-center {
  text-align: center;
}

/* Smooth scroll offset for fixed header */
[id] {
  scroll-margin-top: calc(var(--header-height) + var(--space-lg));
}

/* =====================================================
   Additional Mobile Optimizations
   ===================================================== */

/* Touch-friendly interactions */
@media (hover: none) and (pointer: coarse) {
  .btn:active {
    transform: scale(0.98);
  }
  
  .service-card:active {
    transform: translateY(-2px);
  }
  
  .faq-item__question:active {
    background-color: var(--color-bg-alt);
  }
}

/* Improved text spacing on small screens */
@media (max-width: 480px) {
  body {
    font-size: 15px;
  }
  
  .hero__subtitle {
    font-size: var(--fs-base);
    line-height: 1.7;
  }
  
  .hero__subtitle br {
    display: none;
  }
  
  .about__quote {
    font-size: var(--fs-lg);
  }
  
  .section__subtitle br {
    display: none;
  }
  
  .service-card {
    padding: var(--space-lg);
  }
  
  .service-card__price {
    font-size: var(--fs-xl);
  }
  
  .final-cta__actions {
    width: 100%;
  }
  
  .final-cta__actions .btn {
    width: 100%;
  }
}

/* Tablet optimizations */
@media (min-width: 481px) and (max-width: 768px) {
  .formats__grid {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .formats__grid .service-card:last-child {
    grid-column: span 2;
    max-width: 400px;
    margin: 0 auto;
  }
  
  .testimonials__grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

/* Testimonial cards - align to top for different heights */
.testimonials__grid {
  align-items: start;
}

.testimonial-card {
  height: auto;
}

/* Large screen optimizations */
@media (min-width: 1200px) {
  .container {
    max-width: 1280px;
  }
  
  .hero__content {
    max-width: 800px;
  }
  
  .about__inner {
    gap: var(--space-4xl);
  }
}

/* Print styles */
@media print {
  .header,
  .mobile-menu,
  .popup-overlay,
  .hero__secondary-cta {
    display: none !important;
  }
  
  .hero {
    min-height: auto;
    padding-top: var(--space-2xl);
  }
  
  .section {
    page-break-inside: avoid;
  }
}

/* Reduced motion preference */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
  
  html {
    scroll-behavior: auto;
  }
}

/* Dark mode support (optional, commented out for now) */
/*
@media (prefers-color-scheme: dark) {
  :root {
    --color-bg: #1A1917;
    --color-bg-alt: #242220;
    --color-text: #F5F3F0;
    --color-text-light: #B8B5B0;
    --color-text-muted: #7A7773;
    --color-border: #3D3A37;
    --color-secondary: #2D2A28;
  }
}
*/