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

:root {
  --clr-bg:       #fafafa;
  --clr-surface:  #ffffff;
  --clr-text:     #1a1a2e;
  --clr-muted:    #6b7280;
  --clr-accent:   #0891b2;    /* cyan-600 */
  --clr-accent-h: #0e7490;    /* cyan-700 */
  --clr-border:   #e5e7eb;
  --clr-alt-bg:   #f1f5f9;
  --max-w:        960px;
  --nav-h:        64px;
  --radius:       12px;
  --transition:   0.3s ease;
  --font:         -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Noto Sans SC", "Helvetica Neue", Arial, sans-serif;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: var(--nav-h);
}

body {
  font-family: var(--font);
  background: var(--clr-bg);
  color: var(--clr-text);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}

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

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

/* ════════════════════════════════════
   Navigation
   ════════════════════════════════════ */
.nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  height: var(--nav-h);
  background: rgba(255,255,255,.85);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--clr-border);
  z-index: 1000;
}

.nav__inner {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 24px;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav__logo {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--clr-text) !important;
  letter-spacing: -0.02em;
}

.nav__right {
  display: flex;
  align-items: center;
  gap: 24px;
}

.nav__link {
  font-size: 0.9rem;
  color: var(--clr-muted) !important;
  font-weight: 500;
  transition: color var(--transition);
}
.nav__link:hover { color: var(--clr-text) !important; }

.lang-toggle {
  background: none;
  border: 1.5px solid var(--clr-border);
  border-radius: 6px;
  padding: 4px 12px;
  font-size: 0.8rem;
  font-weight: 600;
  cursor: pointer;
  color: var(--clr-muted);
  transition: all var(--transition);
  font-family: inherit;
}
.lang-toggle:hover {
  border-color: var(--clr-accent);
  color: var(--clr-accent);
}

/* ════════════════════════════════════
   Hero
   ════════════════════════════════════ */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--nav-h) 24px 0;
  text-align: center;
}

.hero__inner {
  max-width: 680px;
}

.hero__title {
  font-size: clamp(2.25rem, 5vw, 3.5rem);
  font-weight: 800;
  letter-spacing: -0.03em;
  line-height: 1.15;
  margin-bottom: 16px;
}

.hero__sub {
  font-size: 1.2rem;
  color: var(--clr-accent);
  font-weight: 600;
  margin-bottom: 12px;
}

.hero__desc {
  font-size: 1.05rem;
  color: var(--clr-muted);
  margin-bottom: 36px;
}

.hero__actions {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
}

/* ════════════════════════════════════
   Buttons
   ════════════════════════════════════ */
.btn {
  display: inline-flex;
  align-items: center;
  padding: 12px 28px;
  border-radius: 8px;
  font-size: 0.95rem;
  font-weight: 600;
  transition: all var(--transition);
  font-family: inherit;
  cursor: pointer;
}

.btn--primary {
  background: var(--clr-text);
  color: #fff !important;
  border: 2px solid var(--clr-text);
}
.btn--primary:hover {
  background: var(--clr-accent);
  border-color: var(--clr-accent);
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(8,145,178,0.25);
}

.btn--outline {
  background: transparent;
  color: var(--clr-text) !important;
  border: 2px solid var(--clr-border);
}
.btn--outline:hover {
  border-color: var(--clr-text);
  transform: translateY(-2px);
}

/* ════════════════════════════════════
   General Sections
   ════════════════════════════════════ */
.section {
  padding: 100px 24px;
}

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

.section__inner {
  max-width: var(--max-w);
  margin: 0 auto;
}

.section__title {
  font-size: clamp(1.6rem, 3vw, 2.2rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  margin-bottom: 48px;
  position: relative;
}
.section__title::after {
  content: '';
  display: block;
  width: 48px;
  height: 4px;
  background: var(--clr-accent);
  border-radius: 2px;
  margin-top: 12px;
}

/* ═══ About ═══ */
.about__content {
  max-width: 640px;
}
.about__content p {
  margin-bottom: 16px;
  font-size: 1.05rem;
  color: var(--clr-muted);
}
.about__content p:first-of-type {
  font-size: 1.1rem;
  color: var(--clr-text);
}

/* ═══ Services Grid ═══ */
.services__grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 24px;
}

.service-card {
  background: var(--clr-surface);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius);
  padding: 32px 24px;
  transition: all var(--transition);
}
.service-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 12px 32px rgba(0,0,0,.06);
  border-color: var(--clr-accent);
}

.service-card__icon {
  font-size: 2rem;
  margin-bottom: 16px;
}

.service-card h3 {
  font-size: 1.1rem;
  font-weight: 600;
  margin-bottom: 10px;
}

.service-card p {
  color: var(--clr-muted);
  font-size: 0.92rem;
  line-height: 1.6;
}

/* ═══ Portfolio Grid ═══ */
.portfolio__grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 24px;
}

.portfolio-card {
  background: var(--clr-surface);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius);
  overflow: hidden;
  transition: all var(--transition);
}
.portfolio-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 12px 32px rgba(0,0,0,.06);
}

.portfolio-card__img {
  height: 180px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.portfolio-card__body {
  padding: 20px 24px;
}

.portfolio-card__body h3 {
  font-size: 1.05rem;
  font-weight: 600;
  margin-bottom: 8px;
}

.portfolio-card__body p {
  color: var(--clr-muted);
  font-size: 0.9rem;
  line-height: 1.6;
}

/* ════════════════════════════════════
   Contact
   ════════════════════════════════════ */
.contact__text {
  font-size: 1.1rem;
  color: var(--clr-muted);
  margin-bottom: 32px;
}

.contact__links {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
}

.contact__link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 20px;
  border: 1px solid var(--clr-border);
  border-radius: 8px;
  color: var(--clr-text) !important;
  font-size: 0.92rem;
  font-weight: 500;
  transition: all var(--transition);
}
.contact__link:hover {
  border-color: var(--clr-accent);
  color: var(--clr-accent) !important;
  background: rgba(8,145,178,.04);
}

/* ════════════════════════════════════
   Footer
   ════════════════════════════════════ */
.footer {
  text-align: center;
  padding: 32px 24px;
  border-top: 1px solid var(--clr-border);
  color: var(--clr-muted);
  font-size: 0.85rem;
}

.footer__inner {
  max-width: var(--max-w);
  margin: 0 auto;
}

/* ════════════════════════════════════
   Responsive
   ════════════════════════════════════ */
@media (max-width: 640px) {
  .nav__link { display: none; }
  .section { padding: 72px 20px; }
  .services__grid, .portfolio__grid {
    grid-template-columns: 1fr;
  }
  .hero__title { font-size: 2rem; }
  .hero__actions { flex-direction: column; align-items: center; }
  .btn { width: 100%; max-width: 280px; justify-content: center; }
}