/* Olga Saykova — English Teacher Landing */
/* Colors matched to https://olgas.lovable.app/ */
:root {
  --navy-950: oklch(22% 0.07 260);
  --navy-900: oklch(34% 0.08 255);
  --navy-700: oklch(53% 0.1 245);
  --navy-100: oklch(93% 0.015 250);
  --navy-50: oklch(96% 0.01 250);
  --background: oklch(96% 0.01 250);
  --foreground: oklch(22% 0.07 260);
  --card: oklch(100% 0 0);
  --muted: oklch(45% 0.06 255);
  --accent: oklch(53% 0.1 245);
  --border: oklch(85% 0.02 250);
  --primary: oklch(34% 0.08 255);
  --primary-foreground: oklch(96% 0.01 250);
  --whatsapp: oklch(72% 0.22 145);
  --whatsapp-hover: oklch(58% 0.16 170);
  --radius: 0.625rem;
  --font-sans: "Fira Sans", system-ui, -apple-system, sans-serif;
  --font-display: "DM Serif Display", Georgia, serif;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-sans);
  background: var(--background);
  color: var(--foreground);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

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

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

ul {
  list-style: none;
}

.container {
  width: 100%;
  max-width: 1120px;
  margin: 0 auto;
  padding: 0 1.75rem;
}

/* Header */
.header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(244, 247, 251, 0.85);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(212, 221, 232, 0.6);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 1.25rem;
  padding-bottom: 1.25rem;
  /* left/right padding comes from .container — do not override with shorthand */
  gap: 1rem;
  min-height: 68px;
}

.logo {
  font-family: var(--font-display);
  font-size: 1.35rem;
  font-weight: 400;
  color: var(--foreground);
  white-space: nowrap;
  flex-shrink: 0;
}

.nav {
  display: none;
  gap: 1.75rem;
}

.nav a {
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--muted);
  transition: color 0.2s;
  white-space: nowrap;
}

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

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  border-radius: 999px;
  font-weight: 500;
  font-size: 0.95rem;
  transition: background 0.2s, color 0.2s, border-color 0.2s;
  cursor: pointer;
  border: none;
  white-space: nowrap;
  flex-shrink: 0;
}

.btn-primary {
  background: var(--primary);
  color: var(--primary-foreground);
  padding: 0.65rem 1.25rem;
}

.btn-primary:hover {
  background: var(--navy-700);
}

.btn-outline {
  background: var(--card);
  color: var(--foreground);
  border: 1px solid var(--border);
  padding: 0.65rem 1.25rem;
}

.btn-outline:hover {
  background: var(--navy-100);
}

.btn-whatsapp {
  background: var(--whatsapp);
  color: #fff;
  padding: 0.9rem 1.75rem;
}

.btn-whatsapp:hover {
  background: var(--whatsapp-hover);
}

.btn-lg {
  padding: 0.9rem 1.75rem;
  font-size: 1rem;
}

/* Hero */
.hero {
  padding: 3.5rem 0 4rem;
}

.hero-grid {
  display: grid;
  gap: 2.5rem;
  align-items: center;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  border: 1px solid var(--border);
  background: var(--card);
  border-radius: 999px;
  padding: 0.3rem 0.75rem;
  font-size: 0.75rem;
  font-weight: 500;
  color: var(--muted);
}

.hero h1 {
  font-family: var(--font-display);
  font-size: clamp(2rem, 5vw, 3.25rem);
  font-weight: 400;
  line-height: 1.15;
  margin-top: 1.25rem;
  color: var(--foreground);
}

.hero-lead {
  margin-top: 1.25rem;
  font-size: 1.1rem;
  color: var(--muted);
  max-width: 36rem;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: 1.75rem;
}

.stats {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.25rem;
  margin-top: 2.5rem;
}

.stat-value {
  font-family: var(--font-display);
  font-size: 1.85rem;
  color: var(--foreground);
}

.stat-label {
  font-size: 0.85rem;
  color: var(--muted);
  margin-top: 0.15rem;
}

.hero-photo {
  display: flex;
  justify-content: center;
}

.hero-photo-wrap {
  position: relative;
}

.hero-photo-wrap::before {
  content: "";
  position: absolute;
  inset: -1rem;
  border-radius: 50%;
  background: linear-gradient(135deg, rgba(61, 90, 128, 0.2), rgba(26, 39, 68, 0.15));
  filter: blur(24px);
}

.hero-photo img {
  position: relative;
  width: min(280px, 80vw);
  height: min(280px, 80vw);
  border-radius: 50%;
  object-fit: cover;
  border: 4px solid var(--card);
  box-shadow: 0 20px 50px rgba(15, 23, 41, 0.15);
}

/* Sections */
.section {
  padding: 4rem 0;
}

.section-title {
  font-family: var(--font-display);
  font-size: clamp(1.75rem, 3.5vw, 2.25rem);
  font-weight: 400;
  text-align: center;
}

.section-lead {
  text-align: center;
  color: var(--muted);
  max-width: 36rem;
  margin: 0.85rem auto 0;
  font-size: 1rem;
}

.section-dark {
  background: var(--navy-900);
  color: var(--navy-50);
}

.section-dark .section-lead {
  color: var(--navy-100);
}

.section-card {
  background: var(--card);
}

/* About */
.about-grid {
  display: grid;
  gap: 2.5rem;
  margin-top: 2.5rem;
}

.about-text p {
  color: var(--muted);
  margin-bottom: 1rem;
}

.about-list {
  margin-top: 1.5rem;
}

.about-list li {
  display: flex;
  align-items: flex-start;
  gap: 0.65rem;
  color: var(--muted);
  margin-bottom: 0.65rem;
}

.about-list li::before {
  content: "✓";
  color: var(--accent);
  font-weight: 600;
  flex-shrink: 0;
}

.edu-card {
  background: var(--navy-100);
  border-radius: 1rem;
  padding: 1.5rem;
}

.edu-card h3 {
  font-family: var(--font-display);
  font-size: 1.35rem;
  margin-bottom: 1.25rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.edu-item {
  border-bottom: 1px solid var(--border);
  padding-bottom: 1rem;
  margin-bottom: 1rem;
}

.edu-item:last-child {
  border-bottom: none;
  margin-bottom: 0;
  padding-bottom: 0;
}

.edu-item-header {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 0.5rem;
}

.edu-item h4 {
  font-weight: 500;
  font-size: 0.95rem;
}

.edu-year {
  font-size: 0.75rem;
  background: var(--card);
  color: var(--muted);
  padding: 0.15rem 0.55rem;
  border-radius: 999px;
}

.edu-item p {
  font-size: 0.875rem;
  color: var(--muted);
  margin-top: 0.25rem;
}

/* Goals */
.goals-grid {
  display: grid;
  gap: 1.5rem;
  margin-top: 2.5rem;
}

.goal-card {
  background: var(--card);
  color: var(--foreground);
  border-radius: 1.25rem;
  padding: 1.75rem;
  border: 1px solid rgba(255, 255, 255, 0.08);
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.2);
  display: flex;
  flex-direction: column;
}

.goal-tag {
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--muted);
  font-weight: 500;
}

.goal-card h3 {
  font-family: var(--font-display);
  font-size: 1.35rem;
  margin-top: 0.4rem;
}

.goal-intro {
  margin-top: 0.85rem;
  font-size: 0.9rem;
  color: var(--muted);
}

.goal-meta {
  display: grid;
  gap: 1rem;
  margin-top: 1.25rem;
  background: var(--navy-100);
  border-radius: 0.85rem;
  padding: 1rem;
}

.goal-meta dt {
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--muted);
}

.goal-meta dd {
  font-size: 0.875rem;
  margin-top: 0.2rem;
}

.goal-plan {
  margin-top: 1.25rem;
  flex-grow: 1;
}

.goal-plan > span {
  font-size: 0.9rem;
  font-weight: 500;
}

.goal-plan ol {
  margin-top: 0.85rem;
  counter-reset: step;
}

.goal-plan li {
  display: flex;
  gap: 0.85rem;
  margin-bottom: 0.85rem;
}

.goal-plan li::before {
  counter-increment: step;
  content: counter(step);
  flex-shrink: 0;
  width: 1.6rem;
  height: 1.6rem;
  border-radius: 50%;
  background: var(--primary);
  color: var(--primary-foreground);
  font-size: 0.75rem;
  font-weight: 500;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-top: 0.1rem;
}

.goal-plan strong {
  font-size: 0.9rem;
  display: block;
}

.goal-plan .duration {
  font-weight: 400;
  color: var(--muted);
  font-size: 0.8rem;
  margin-left: 0.35rem;
}

.goal-plan p {
  font-size: 0.85rem;
  color: var(--muted);
  margin-top: 0.2rem;
}

.goal-result {
  margin-top: 1.25rem;
  padding-top: 1.15rem;
  border-top: 1px solid var(--border);
}

.goal-result .label {
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--muted);
}

.goal-result p {
  margin-top: 0.3rem;
  font-size: 0.9rem;
}

.goal-result .btn {
  margin-top: 1rem;
}

/* Services */
.services-grid {
  display: grid;
  gap: 1.25rem;
  margin-top: 2.5rem;
}

.service-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 1rem;
  padding: 1.5rem;
  display: flex;
  flex-direction: column;
  transition: box-shadow 0.2s;
}

.service-card:hover {
  box-shadow: 0 8px 30px rgba(15, 23, 41, 0.08);
}

.service-card h3 {
  font-family: var(--font-display);
  font-size: 1.2rem;
}

.service-card p {
  margin-top: 0.65rem;
  font-size: 0.9rem;
  color: var(--muted);
  flex-grow: 1;
}

.service-price {
  margin-top: 1.25rem;
  padding-top: 1rem;
  border-top: 1px solid var(--border);
}

.service-price strong {
  font-family: var(--font-display);
  font-size: 1.35rem;
  font-weight: 400;
}

.service-price span {
  display: block;
  font-size: 0.75rem;
  color: var(--muted);
  margin-top: 0.15rem;
}

/* Certificates */
.certs-grid {
  display: grid;
  gap: 1.25rem;
  margin-top: 2.5rem;
}

.cert-card {
  border: 1px solid rgba(244, 247, 251, 0.1);
  background: rgba(244, 247, 251, 0.05);
  border-radius: 1rem;
  padding: 1.5rem;
  transition: background 0.2s;
}

.cert-card:hover {
  background: rgba(244, 247, 251, 0.1);
}

.cert-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 1rem;
}

.cert-year {
  font-size: 0.75rem;
  background: rgba(244, 247, 251, 0.1);
  padding: 0.15rem 0.55rem;
  border-radius: 999px;
}

.cert-card h3 {
  font-family: var(--font-display);
  font-size: 1.2rem;
  margin-top: 0.85rem;
}

.cert-card p {
  margin-top: 0.4rem;
  font-size: 0.9rem;
  color: var(--navy-100);
}

/* Reviews */
.reviews-grid {
  display: grid;
  gap: 1.25rem;
  margin-top: 2.5rem;
}

.review-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 1rem;
  padding: 1.5rem;
}

.stars {
  color: #c9a227;
  letter-spacing: 0.05em;
  font-size: 0.9rem;
}

.review-card blockquote {
  margin-top: 0.85rem;
  font-size: 0.9rem;
  line-height: 1.65;
  color: var(--foreground);
}

.review-meta {
  margin-top: 1.25rem;
  padding-top: 1rem;
  border-top: 1px solid var(--border);
}

.review-meta strong {
  display: block;
  font-weight: 500;
}

.review-meta span {
  font-size: 0.75rem;
  color: var(--muted);
}

/* Contact */
.contact {
  text-align: center;
}

.contact-actions {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0.75rem;
  margin-top: 2rem;
}

.contact-notes {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 1.5rem;
  margin-top: 1.75rem;
  font-size: 0.875rem;
  color: var(--muted);
}

/* Footer */
.footer {
  border-top: 1px solid var(--border);
  padding: 2rem 0;
}

.footer-inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1rem;
  text-align: center;
}

.footer-brand {
  font-family: var(--font-display);
  font-size: 1.1rem;
}

.footer-brand span {
  display: block;
  font-family: var(--font-sans);
  font-size: 0.85rem;
  color: var(--muted);
  margin-top: 0.15rem;
}

.footer-links {
  display: flex;
  gap: 1.5rem;
  font-size: 0.875rem;
  color: var(--muted);
}

.footer-links a:hover {
  color: var(--foreground);
}

.footer-copy {
  margin-top: 1.5rem;
  font-size: 0.75rem;
  line-height: 1.5;
  color: var(--muted);
  text-align: center;
}

.footer-credits {
  display: block;
  width: 100%;
  margin-top: 0.35rem;
  font-size: 0.75rem;
  line-height: 1.5;
  color: var(--muted);
  text-align: center;
}

.footer-credits a {
  font-size: inherit;
  line-height: inherit;
  color: inherit;
  text-decoration: none;
  transition: color 0.2s;
}

.footer-credits a:hover {
  color: var(--foreground);
}

.footer-credits-sep {
  margin: 0 0.4rem;
  opacity: 0.6;
}

/* Responsive */
@media (min-width: 640px) {
  .stats {
    grid-template-columns: repeat(4, 1fr);
  }

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

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

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

  .goal-meta {
    grid-template-columns: 1fr 1fr;
  }

  .hero-photo img {
    width: 320px;
    height: 320px;
  }
}

@media (min-width: 768px) {
  .footer-inner {
    flex-direction: row;
    justify-content: space-between;
    text-align: left;
  }
}

@media (min-width: 1024px) {
  .nav {
    display: flex;
  }

  .hero-grid {
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
  }

  .hero-photo {
    justify-content: flex-end;
  }

  .hero-photo img {
    width: 360px;
    height: 360px;
  }

  .about-grid {
    grid-template-columns: 1fr 1fr;
    gap: 3.5rem;
  }

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

  .services-grid {
    grid-template-columns: repeat(4, 1fr);
  }

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

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