:root {
  --color-bg: #fdfdfd;
  --color-primary: #1e5fdd;
  --color-primary-dark: #1749a5;
  --color-secondary: #e7f0ff;
  --color-text: #1f2a37;
  --color-muted: #5f6c7b;
  --color-border: #d9e3f3;
  --gradient-blue: radial-gradient(circle at top left, rgba(71, 126, 255, 0.15), transparent 55%),
    radial-gradient(circle at top right, rgba(15, 154, 255, 0.18), transparent 60%);
  font-size: 16px;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: "Inter", "SF Pro Display", "Segoe UI", system-ui, -apple-system, BlinkMacSystemFont, sans-serif;
  background: var(--color-bg);
  color: var(--color-text);
  -webkit-font-smoothing: antialiased;
}

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

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

.container {
  width: min(1100px, 90vw);
  margin: 0 auto;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(253, 253, 253, 0.98);
  border-bottom: 1px solid rgba(217, 227, 243, 0.8);
  backdrop-filter: blur(10px);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1rem 0;
}

.logo {
  font-weight: 600;
  font-size: 1.1rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-primary);
}

.nav-links {
  display: flex;
  gap: 1.5rem;
  font-size: 0.95rem;
}

.nav-links a {
  color: var(--color-muted);
  font-weight: 500;
  transition: color 0.2s ease;
}

.nav-links a:hover,
.nav-links a:focus {
  color: var(--color-primary);
}

.lang-toggle {
  display: flex;
  align-items: center;
  gap: 0.35rem;
  font-size: 0.9rem;
}

.lang-btn {
  border: none;
  background: transparent;
  font-weight: 600;
  color: var(--color-muted);
  cursor: pointer;
  padding: 0.15rem 0.25rem;
}

.lang-btn.active {
  color: var(--color-primary);
}

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 0.2rem;
  border: 1px solid var(--color-border);
  border-radius: 0.5rem;
  padding: 0.35rem 0.6rem;
  background: #fff;
  cursor: pointer;
}

.nav-toggle-line {
  width: 1.5rem;
  height: 2px;
  background: var(--color-primary);
}

.nav-toggle-label {
  font-size: 0.7rem;
  color: var(--color-muted);
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.hero {
  position: relative;
  overflow: hidden;
  padding: 7rem 0 4rem;
  background: linear-gradient(180deg, #f8fbff 0%, #ffffff 60%);
}

.hero-gradient {
  position: absolute;
  inset: 0;
  background: var(--gradient-blue);
  z-index: 0;
}

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

/* Hero portrait */
.hero-portrait {
  margin: 20px 0 14px;
  display: flex;
  justify-content: center;
}

.hero-portrait img {
  width: min(440px, 90vw);
  aspect-ratio: 1 / 1;
  object-fit: cover;
  border-radius: 28px;
  border: 1px solid rgba(15, 23, 42, 0.08);
  box-shadow: 0 16px 36px rgba(15, 23, 42, 0.12);
  background: #fff;
}

.eyebrow {
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--color-muted);
  font-size: 0.75rem;
  margin-bottom: 0.5rem;
}

.hero h1 {
  font-size: clamp(2rem, 4vw, 3.2rem);
  line-height: 1.2;
  margin: 0.5rem 0;
}

.hero-subtext {
  font-size: 1.15rem;
  color: var(--color-muted);
  max-width: 650px;
}

.hero-ctas {
  margin-top: 2rem;
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
}

.section {
  padding: 4rem 0;
}

.section-header h2 {
  font-size: clamp(1.8rem, 3vw, 2.5rem);
  margin: 0.2rem 0 1rem;
}

.section-lead {
  font-size: 1.1rem;
  color: var(--color-muted);
  max-width: 760px;
}

.about-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 1.5rem;
  margin-top: 2rem;
}

.about-card {
  background: #fff;
  border: 1px solid var(--color-border);
  border-radius: 1rem;
  padding: 1.5rem;
  box-shadow: 0 20px 40px rgba(30, 95, 221, 0.05);
}

.cv-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.cv-list li {
  padding-left: 1rem;
  position: relative;
  color: var(--color-muted);
}

.cv-list li::before {
  content: '';
  width: 0.35rem;
  height: 0.35rem;
  background: var(--color-primary);
  border-radius: 50%;
  position: absolute;
  left: 0;
  top: 0.5rem;
}

.philosophy-content {
  display: flex;
  flex-direction: column;
  gap: 1.2rem;
  font-size: 1.05rem;
  color: var(--color-muted);
}

.contact {
  background: #f7f9ff;
  border-top: 1px solid var(--color-border);
}

.contact-form {
  margin-top: 2rem;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 1.2rem;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}

label {
  font-weight: 600;
}

input,
select,
textarea {
  padding: 0.85rem 1rem;
  border-radius: 0.75rem;
  border: 1px solid var(--color-border);
  font: inherit;
  background: #fff;
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

input:focus,
select:focus,
textarea:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(30, 95, 221, 0.2);
}

textarea {
  resize: vertical;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.4rem;
  border-radius: 999px;
  padding: 0.9rem 1.8rem;
  font-weight: 600;
  text-align: center;
  cursor: pointer;
  transition: transform 0.2s ease, box-shadow 0.2s ease, background 0.2s ease;
}

.btn.primary {
  background: var(--color-primary);
  color: #fff;
  border: none;
  box-shadow: 0 15px 35px rgba(30, 95, 221, 0.25);
}

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

.btn.secondary {
  background: var(--color-secondary);
  color: var(--color-primary);
  border: 1px solid rgba(30, 95, 221, 0.2);
}

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

.btn.secondary:hover,
.btn.outline:hover {
  transform: translateY(-2px);
}

.cta-band {
  background: #eef4ff;
  padding: 1.8rem 0;
}

.cta-band-inner {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
}

.cta-band p {
  font-size: 1.1rem;
  color: var(--color-text);
}

.safety-note {
  margin-top: 1rem;
  font-size: 0.95rem;
  color: #a03636;
}

.alt-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  margin-top: 2rem;
}

.form-message {
  grid-column: 1 / -1;
  margin: 0;
  font-weight: 600;
  color: var(--color-primary);
  opacity: 0;
  transform: translateY(-0.5rem);
  transition: opacity 0.2s ease, transform 0.2s ease;
}

.form-message.visible {
  opacity: 1;
  transform: translateY(0);
}

.form-message.error {
  color: #c43131;
}

.site-footer {
  background: #ffffff;
  border-top: 1px solid var(--color-border);
  padding: 2.5rem 0;
}

.footer-grid {
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
  font-size: 0.95rem;
  color: var(--color-muted);
  text-align: center;
}

.footer-meta {
  font-weight: 600;
  color: var(--color-text);
}

.footer-note {
  font-size: 0.85rem;
}

@media (max-width: 900px) {
  .nav-links {
    position: absolute;
    top: 100%;
    right: 1rem;
    background: #fff;
    border: 1px solid var(--color-border);
    border-radius: 0.8rem;
    padding: 1rem 1.5rem;
    flex-direction: column;
    gap: 0.8rem;
    box-shadow: 0 15px 40px rgba(30, 95, 221, 0.1);
    transform: translateY(-150%);
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.25s ease, transform 0.25s ease;
  }

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

  .nav-toggle {
    display: flex;
  }
}

@media (max-width: 640px) {
  .hero {
    padding-top: 6rem;
  }

  .cta-band-inner,
  .alt-actions {
    flex-direction: column;
    align-items: flex-start;
  }

  .header-inner {
    flex-wrap: wrap;
    gap: 0.5rem 1rem;
  }

  .lang-toggle {
    order: 3;
  }
}

/* Desktop alignment */
@media (min-width: 900px) {
  .hero-portrait {
    justify-content: flex-start;
  }

  .hero-portrait img {
    width: 380px;
  }
}

/* Philosophy banner image */
.philosophy-image {
  padding: 3.5rem 0 1.5rem;
}

.philosophy-image img {
  width: 100%;
  max-width: 100%;
  border-radius: 1.5rem;
  box-shadow: 0 18px 40px rgba(0, 0, 0, 0.12);
  object-fit: cover;
}