:root {
  --color-bg: #faf8f5;
  --color-bg-alt: #f0ebe3;
  --color-bg-dark: #2c2825;
  --color-text: #3d3835;
  --color-text-light: #6b6560;
  --color-accent: #8b7355;
  --color-accent-light: #a89070;
  --color-accent-dark: #6d5a44;
  --color-white: #ffffff;
  --font-serif: 'Cormorant Garamond', Georgia, serif;
  --font-sans: 'Montserrat', system-ui, sans-serif;
  --shadow: 0 4px 24px rgba(44, 40, 37, 0.08);
  --shadow-lg: 0 12px 48px rgba(44, 40, 37, 0.12);
  --radius: 12px;
  --transition: 0.3s ease;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-sans);
  font-weight: 400;
  font-size: 16px;
  line-height: 1.7;
  color: var(--color-text);
  background: var(--color-bg);
}

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

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

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

.container {
  width: 100%;
  max-width: 1140px;
  margin: 0 auto;
  padding: 0 24px;
}

/* Header */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  background: rgba(250, 248, 245, 0.92);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(139, 115, 85, 0.1);
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
}

.nav-brand {
  display: flex;
  align-items: center;
  gap: 14px;
}

.logo {
  font-family: var(--font-serif);
  font-size: 1.5rem;
  font-weight: 600;
  line-height: 1;
  color: var(--color-text);
  letter-spacing: 0.02em;
}

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

.yin-yang {
  position: relative;
  top: 1px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  width: 44px;
  height: 44px;
  padding: 0;
  border-radius: 50%;
  cursor: pointer;
  background: #fff;
  border: 2px solid var(--color-accent);
  box-shadow:
    0 0 0 3px rgba(139, 115, 85, 0.18),
    0 2px 8px rgba(139, 115, 85, 0.2);
  transition: transform 0.35s ease, border-color 0.25s ease, box-shadow 0.35s ease;
  animation: yin-pulse 2s ease-in-out infinite;
}

.yin-yang svg {
  display: block;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  transform: rotate(180deg);
  transition: transform 0.45s ease;
  pointer-events: none;
}

.yin-yang:hover {
  transform: scale(1.18);
  border-color: var(--color-accent-dark);
  box-shadow:
    0 0 0 5px rgba(139, 115, 85, 0.28),
    0 4px 16px rgba(139, 115, 85, 0.35);
  animation: none;
}

.yin-yang:hover svg {
  transform: rotate(0deg);
}

.yin-yang:focus-visible {
  outline: 2px solid var(--color-accent-dark);
  outline-offset: 4px;
}

@keyframes yin-pulse {
  0%, 100% {
    box-shadow:
      0 0 0 3px rgba(139, 115, 85, 0.2),
      0 2px 8px rgba(139, 115, 85, 0.15);
  }
  50% {
    box-shadow:
      0 0 0 7px rgba(139, 115, 85, 0.12),
      0 2px 12px rgba(139, 115, 85, 0.3);
  }
}

.nav-links {
  display: flex;
  gap: 36px;
  list-style: none;
}

.nav-links a {
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--color-text);
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

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

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
}

.nav-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--color-text);
  transition: var(--transition);
}

/* Hero */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding: 120px 0 80px;
  overflow: hidden;
}

.hero-bg {
  position: absolute;
  inset: 0;
  background:
    linear-gradient(135deg, rgba(250, 248, 245, 0.85) 0%, rgba(240, 235, 227, 0.75) 100%),
    url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 1200 800"><defs><linearGradient id="g" x1="0%25" y1="0%25" x2="100%25" y2="100%25"><stop offset="0%25" style="stop-color:%23e8dfd3"/><stop offset="50%25" style="stop-color:%23d4c4b0"/><stop offset="100%25" style="stop-color:%23c9b89a"/></linearGradient></defs><rect fill="url(%23g)" width="1200" height="800"/><circle cx="900" cy="200" r="300" fill="%23b8a088" opacity="0.15"/><circle cx="200" cy="600" r="250" fill="%238b7355" opacity="0.1"/></svg>');
  background-size: cover;
  background-position: center;
}

.hero-overlay {
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse at 70% 30%, rgba(139, 115, 85, 0.08) 0%, transparent 60%);
}

.hero-content {
  position: relative;
  z-index: 1;
  max-width: 640px;
}

.hero-label {
  font-size: 0.8rem;
  font-weight: 500;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--color-accent);
  margin-bottom: 20px;
}

.hero h1 {
  font-family: var(--font-serif);
  font-size: clamp(2.5rem, 6vw, 4rem);
  font-weight: 400;
  line-height: 1.15;
  color: var(--color-text);
  margin-bottom: 24px;
}

.hero-text {
  font-size: 1.1rem;
  color: var(--color-text-light);
  margin-bottom: 36px;
  max-width: 480px;
}

/* Buttons */
.btn {
  display: inline-block;
  padding: 16px 36px;
  font-family: var(--font-sans);
  font-size: 0.875rem;
  font-weight: 500;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  border: none;
  border-radius: 50px;
  cursor: pointer;
  transition: all var(--transition);
}

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

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

.btn-full {
  width: 100%;
}

/* Sections */
.section {
  padding: 100px 0;
}

.section-label {
  display: block;
  font-size: 0.75rem;
  font-weight: 500;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--color-accent);
  margin-bottom: 12px;
}

.section-header {
  text-align: center;
  max-width: 560px;
  margin: 0 auto 60px;
}

.section-header h2,
.about-content h2,
.contacts-info h2 {
  font-family: var(--font-serif);
  font-size: clamp(2rem, 4vw, 2.75rem);
  font-weight: 400;
  color: var(--color-text);
  margin-bottom: 16px;
}

.section-desc {
  color: var(--color-text-light);
}

/* About */
.about {
  background: var(--color-white);
}

.about-grid {
  display: grid;
  grid-template-columns: 1fr 1.1fr;
  gap: 64px;
  align-items: center;
}

.about-photo {
  position: relative;
}

.photo-frame {
  position: relative;
  z-index: 1;
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
}

.photo-frame img {
  width: 100%;
  aspect-ratio: 4 / 5;
  object-fit: cover;
  background: var(--color-bg-alt);
}

.photo-accent {
  position: absolute;
  bottom: -20px;
  right: -20px;
  width: 60%;
  height: 60%;
  background: var(--color-bg-alt);
  border-radius: var(--radius);
  z-index: 0;
}

.about-content .lead {
  font-size: 1.15rem;
  color: var(--color-text);
  margin-bottom: 20px;
  line-height: 1.6;
}

.about-content p {
  color: var(--color-text-light);
  margin-bottom: 16px;
}

.about-features {
  display: flex;
  gap: 40px;
  list-style: none;
  margin-top: 36px;
  padding-top: 36px;
  border-top: 1px solid var(--color-bg-alt);
}

.about-features li {
  display: flex;
  flex-direction: column;
}

.about-features strong {
  font-family: var(--font-serif);
  font-size: 2rem;
  font-weight: 600;
  color: var(--color-accent);
  line-height: 1.2;
}

.about-features span {
  font-size: 0.8rem;
  color: var(--color-text-light);
  margin-top: 4px;
}

/* Education */
.education {
  background: var(--color-bg);
}

.education-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
  margin-bottom: 72px;
}

.edu-card {
  background: var(--color-white);
  padding: 36px;
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  transition: transform var(--transition), box-shadow var(--transition);
}

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

.edu-year {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  color: var(--color-accent);
  background: var(--color-bg-alt);
  padding: 6px 14px;
  border-radius: 50px;
  margin-bottom: 16px;
}

.edu-card h3 {
  font-family: var(--font-serif);
  font-size: 1.25rem;
  font-weight: 600;
  margin-bottom: 16px;
  line-height: 1.35;
}

.edu-courses {
  list-style: none;
  padding: 0;
}

.edu-courses li {
  position: relative;
  padding-left: 20px;
  margin-bottom: 10px;
  font-size: 0.95rem;
  color: var(--color-text-light);
}

.edu-courses li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0.55em;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--color-accent);
}

.edu-degree {
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--color-accent);
  margin-bottom: 12px;
}

.edu-card p:last-child {
  font-size: 0.9rem;
  color: var(--color-text-light);
}

/* Certificates */
.certificates {
  padding-top: 16px;
  border-top: 1px solid rgba(139, 115, 85, 0.15);
}

.certificates-title {
  font-family: var(--font-serif);
  font-size: 1.75rem;
  font-weight: 400;
  text-align: center;
  margin-bottom: 8px;
}

.certificates-desc {
  text-align: center;
  font-size: 0.9rem;
  color: var(--color-text-light);
  margin-bottom: 36px;
}

.certificates-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 24px;
}

.cert-item {
  display: flex;
  flex-direction: column;
  align-items: stretch;
  padding: 0;
  border: none;
  background: var(--color-white);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
  cursor: pointer;
  transition: transform var(--transition), box-shadow var(--transition);
  text-align: left;
  font-family: inherit;
}

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

.cert-item img {
  width: 100%;
  aspect-ratio: 3 / 4;
  object-fit: cover;
  background: var(--color-bg-alt);
}

.cert-item span {
  padding: 14px 16px;
  font-size: 0.8rem;
  font-weight: 500;
  color: var(--color-text);
  line-height: 1.4;
}

/* Lightbox */
.lightbox {
  position: fixed;
  inset: 0;
  z-index: 200;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
  background: rgba(44, 40, 37, 0.9);
  backdrop-filter: blur(4px);
}

.lightbox[hidden] {
  display: none;
}

.lightbox-img {
  max-width: 90vw;
  max-height: 90vh;
  object-fit: contain;
  border-radius: 8px;
  box-shadow: var(--shadow-lg);
}

.lightbox-close {
  position: absolute;
  top: 20px;
  right: 24px;
  width: 48px;
  height: 48px;
  border: none;
  background: rgba(255, 255, 255, 0.15);
  color: var(--color-white);
  font-size: 2rem;
  line-height: 1;
  border-radius: 50%;
  cursor: pointer;
  transition: background var(--transition);
}

.lightbox-close:hover {
  background: rgba(255, 255, 255, 0.25);
}

/* Services */
.services {
  background: var(--color-bg-dark);
  color: var(--color-white);
}

.services .section-label {
  color: var(--color-accent-light);
}

.services .section-header h2 {
  color: var(--color-white);
}

.services-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}

.service-item {
  display: grid;
  grid-template-rows: auto auto 1fr auto;
  gap: 12px;
  min-height: 100%;
  padding: 32px 28px;
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--radius);
  transition: background var(--transition), border-color var(--transition);
}

.service-item:hover {
  background: rgba(255, 255, 255, 0.05);
  border-color: var(--color-accent);
}

.service-item h3 {
  font-family: var(--font-serif);
  font-size: 1.4rem;
  font-weight: 400;
  line-height: 1.3;
  margin: 0;
  min-height: 2.6em;
}

.service-duration {
  display: inline-flex;
  align-items: center;
  width: fit-content;
  padding: 6px 14px;
  font-size: 0.75rem;
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-accent-light);
  background: rgba(168, 144, 112, 0.15);
  border-radius: 50px;
}

.service-desc {
  margin: 0;
  font-size: 0.9rem;
  line-height: 1.6;
  color: rgba(255, 255, 255, 0.65);
}

.price {
  margin-top: 8px;
  padding-top: 16px;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  font-size: 1.15rem;
  font-weight: 500;
  letter-spacing: 0.02em;
  color: var(--color-accent-light);
}

/* Contacts */
.contacts {
  background: var(--color-white);
}

.contacts-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: start;
}

.contacts-info p {
  color: var(--color-text-light);
  margin-bottom: 32px;
}

.contact-list {
  list-style: none;
  margin-bottom: 32px;
}

.contact-list li {
  display: flex;
  gap: 16px;
  margin-bottom: 24px;
}

.contact-icon {
  font-size: 1.25rem;
  line-height: 1.4;
}

.contact-list strong {
  display: block;
  font-size: 0.75rem;
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-text-light);
  margin-bottom: 4px;
}

.contact-list a,
.contact-list span {
  font-size: 1rem;
  color: var(--color-text);
}

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

.social-links {
  display: flex;
  gap: 16px;
}

.social-links a {
  padding: 10px 20px;
  font-size: 0.8rem;
  font-weight: 500;
  letter-spacing: 0.04em;
  border: 1px solid var(--color-bg-alt);
  border-radius: 50px;
  color: var(--color-text);
  transition: all var(--transition);
}

.social-links a:hover {
  border-color: var(--color-accent);
  color: var(--color-accent);
}

/* Form */
.contact-form {
  background: var(--color-bg);
  padding: 40px;
  border-radius: var(--radius);
}

.contact-form h3 {
  font-family: var(--font-serif);
  font-size: 1.5rem;
  margin-bottom: 28px;
}

.form-group {
  margin-bottom: 20px;
}

.form-group label {
  display: block;
  font-size: 0.8rem;
  font-weight: 500;
  letter-spacing: 0.04em;
  margin-bottom: 8px;
  color: var(--color-text);
}

.form-group input,
.form-group textarea {
  width: 100%;
  padding: 14px 18px;
  font-family: var(--font-sans);
  font-size: 0.95rem;
  color: var(--color-text);
  background: var(--color-white);
  border: 1px solid transparent;
  border-radius: 8px;
  transition: border-color var(--transition);
  resize: vertical;
}

.form-group input:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--color-accent);
}

.form-note {
  margin-top: 16px;
  text-align: center;
  font-weight: 500;
}

.form-note--success {
  color: var(--color-accent);
}

.form-note--error {
  color: #b54a4a;
}

.form-honey {
  position: absolute;
  left: -9999px;
  opacity: 0;
  pointer-events: none;
}

.btn:disabled {
  opacity: 0.6;
  cursor: not-allowed;
  transform: none;
}

/* Footer */
.footer {
  background: var(--color-bg-dark);
  color: rgba(255, 255, 255, 0.6);
  padding: 28px 0;
}

.footer-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.875rem;
}

.footer a {
  color: rgba(255, 255, 255, 0.6);
}

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

.other-side {
  font-size: 0.8rem;
  font-style: italic;
  opacity: 0.7;
  transition: opacity var(--transition), color var(--transition);
}

.other-side:hover {
  opacity: 1;
}

/* Mobile */
@media (max-width: 900px) {
  .about-grid,
  .contacts-grid {
    grid-template-columns: 1fr;
    gap: 48px;
  }

  .education-grid {
    grid-template-columns: 1fr;
  }

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

  .services-grid {
    grid-template-columns: 1fr;
  }

  .service-item h3 {
    min-height: 0;
  }

  .about-photo {
    max-width: 400px;
    margin: 0 auto;
  }

  .about-features {
    justify-content: space-between;
    gap: 20px;
  }
}

@media (max-width: 768px) {
  .nav-toggle {
    display: flex;
  }

  .nav-links {
    position: fixed;
    top: 72px;
    left: 0;
    right: 0;
    flex-direction: column;
    gap: 0;
    background: var(--color-bg);
    padding: 24px;
    border-bottom: 1px solid rgba(139, 115, 85, 0.1);
    transform: translateY(-120%);
    opacity: 0;
    pointer-events: none;
    transition: all var(--transition);
  }

  .nav-links.open {
    transform: translateY(0);
    opacity: 1;
    pointer-events: auto;
  }

  .nav-links li {
    border-bottom: 1px solid var(--color-bg-alt);
  }

  .nav-links a {
    display: block;
    padding: 16px 0;
  }

  .section {
    padding: 72px 0;
  }

  .hero {
    min-height: auto;
    padding: 140px 0 80px;
  }

  .contact-form {
    padding: 28px;
  }

  .certificates-grid {
    grid-template-columns: 1fr;
  }

  .footer-inner {
    flex-direction: column;
    gap: 12px;
    text-align: center;
  }
}