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

:root {
  --bg-primary: #0a0e17;
  --bg-secondary: #111827;
  --bg-card: #1a2236;
  --bg-card-hover: #1f2a42;
  --text-primary: #e8edf5;
  --text-secondary: #94a3b8;
  --text-muted: #64748b;
  --accent: #22d3a0;
  --accent-dim: #0d9488;
  --accent-glow: rgba(34, 211, 160, 0.15);
  --border: #1e293b;
  --border-focus: #22d3a0;
  --radius: 12px;
  --radius-sm: 8px;
  --transition: 250ms cubic-bezier(0.4, 0, 0.2, 1);
  --max-width: 1100px;
  --header-h: 64px;
  --font-sans: 'Inter', system-ui, -apple-system, sans-serif;
  --font-mono: 'JetBrains Mono', monospace;
}

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

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

a { color: var(--accent); text-decoration: none; transition: color var(--transition); }
a:hover { color: #6ee7b7; }

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

ul { list-style: none; }

.container {
  width: min(92%, var(--max-width));
  margin: 0 auto;
}

.section {
  padding: 100px 0;
}

.section__title {
  font-size: 2rem;
  font-weight: 700;
  text-align: center;
  margin-bottom: 0.5rem;
}

.section__title--left {
  text-align: left;
}

.section__subtitle {
  text-align: center;
  color: var(--text-secondary);
  max-width: 600px;
  margin: 0 auto 60px;
  font-size: 1.05rem;
}

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

.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.85rem 2rem;
  border-radius: var(--radius-sm);
  font-family: var(--font-sans);
  font-size: 0.95rem;
  font-weight: 600;
  cursor: pointer;
  border: none;
  transition: all var(--transition);
}

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

.btn--primary:hover {
  background: #6ee7b7;
  box-shadow: 0 0 30px var(--accent-glow);
  transform: translateY(-2px);
}

.btn--ghost {
  background: transparent;
  color: var(--text-primary);
  border: 1.5px solid var(--border);
}

.btn--ghost:hover {
  border-color: var(--accent);
  color: var(--accent);
  transform: translateY(-2px);
}

/* ── Header ──────────────────────────────────── */
.header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: var(--header-h);
  background: rgba(10, 14, 23, 0.85);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
  z-index: 1000;
}

.header__inner {
  display: flex;
  align-items: center;
  height: 100%;
}

.header__nav {
  margin-left: auto;
}

.header__logo {
  font-family: var(--font-mono);
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--accent);
  white-space: nowrap;
  width: 14rem;
  flex-shrink: 0;
}

.header__logo-cursor {
  animation: blink 0.7s step-end infinite;
  margin-left: 1px;
}

@keyframes blink {
  0%, 100% { opacity: 1; }
  50% { opacity: 0; }
}

.header__nav-list {
  display: flex;
  gap: 2rem;
}

.header__nav-link {
  color: var(--text-secondary);
  font-size: 0.9rem;
  font-weight: 500;
  position: relative;
  padding: 0.25rem 0;
}

.header__nav-link::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--accent);
  transition: width var(--transition);
}

.header__nav-link:hover,
.header__nav-link.active {
  color: var(--text-primary);
}

.header__nav-link:hover::after,
.header__nav-link.active::after {
  width: 100%;
}

.header__actions {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin-left: auto;
}

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

.header__hamburger span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--text-primary);
  border-radius: 2px;
  transition: all var(--transition);
}

.header__hamburger.active span:nth-child(1) {
  transform: rotate(45deg) translate(5px, 5px);
}

.header__hamburger.active span:nth-child(2) {
  opacity: 0;
}

.header__hamburger.active span:nth-child(3) {
  transform: rotate(-45deg) translate(5px, -5px);
}

/* ── Hero ────────────────────────────────────── */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding-top: var(--header-h);
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: -30%;
  right: -20%;
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, var(--accent-glow) 0%, transparent 70%);
  pointer-events: none;
}

.hero__content {
  position: relative;
  z-index: 1;
  max-width: 780px;
}

.hero__tagline {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: var(--accent);
  margin-bottom: 1.5rem;
  letter-spacing: 0.5px;
}

.hero__title {
  font-size: clamp(2rem, 5vw, 3.5rem);
  font-weight: 800;
  line-height: 1.15;
  margin-bottom: 1.5rem;
}

.hero__desc {
  font-size: 1.1rem;
  color: var(--text-secondary);
  max-width: 600px;
  margin-bottom: 2.5rem;
  line-height: 1.8;
}

.hero__actions {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
}

/* ── Pain / Solution ─────────────────────────── */
.pain {
  background: var(--bg-secondary);
}

.pain__content {
  max-width: 800px;
  margin: 0 auto;
}

.pain__grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2rem;
  margin-top: 3rem;
}

.pain__col {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 2rem;
}

.pain__heading {
  font-size: 0.85rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 2px;
  margin-bottom: 1.25rem;
}

.pain__heading--problem {
  color: #f87171;
}

.pain__heading--solution {
  color: var(--accent);
}

.pain__list {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.pain__list li {
  color: var(--text-secondary);
  font-size: 0.92rem;
  line-height: 1.7;
  padding-left: 1.25rem;
  position: relative;
}

.pain__list li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0.6em;
  width: 6px;
  height: 6px;
  border-radius: 50%;
}

.pain__col:first-child .pain__list li::before {
  background: #f87171;
}

.pain__col:last-child .pain__list li::before {
  background: var(--accent);
}

.pain__btn {
  margin-top: 1.5rem;
  width: 100%;
  justify-content: center;
}

@media (max-width: 640px) {
  .pain__grid {
    grid-template-columns: 1fr;
  }
}

/* ── Services ────────────────────────────────── */
.services {
  background: var(--bg-secondary);
}

.services__grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.5rem;
}

.service-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 2rem;
  transition: all var(--transition);
}

.service-card:hover {
  background: var(--bg-card-hover);
  border-color: var(--accent-dim);
  transform: translateY(-4px);
  box-shadow: 0 12px 40px rgba(0,0,0,0.3);
}

.service-card__icon {
  width: 48px;
  height: 48px;
  color: var(--accent);
  margin-bottom: 1.25rem;
}

.service-card__icon svg {
  width: 100%;
  height: 100%;
}

.service-card__title {
  font-size: 1.15rem;
  font-weight: 600;
  margin-bottom: 0.75rem;
}

.service-card__desc {
  color: var(--text-secondary);
  font-size: 0.92rem;
  line-height: 1.7;
}

/* ── About ───────────────────────────────────── */
.about__grid {
  display: grid;
  grid-template-columns: 1fr 300px;
  gap: 4rem;
  align-items: start;
}

.about__text p {
  color: var(--text-secondary);
  margin-bottom: 1.25rem;
  font-size: 1rem;
}

.about__text strong {
  color: var(--text-primary);
}

.about__highlights {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.75rem;
  margin-top: 2rem;
}

.about__highlights li {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.9rem;
  color: var(--text-secondary);
  font-family: var(--font-mono);
}

.about__highlights li::before {
  content: '▸';
  color: var(--accent);
}

.about__aside {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  align-self: center;
}

.about__card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.5rem;
  text-align: center;
}

.about__stat {
  display: block;
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--accent);
  font-family: var(--font-sans);
  line-height: 1.3;
  margin-bottom: 0.25rem;
}

.about__label {
  font-size: 0.82rem;
  color: var(--text-muted);
}

.about__photo {
  width: 100%;
  aspect-ratio: 1;
  border-radius: var(--radius);
  overflow: hidden;
  border: 2px solid var(--border);
  background: var(--bg-card);
  transition: border-color var(--transition);
}

.about__photo:hover {
  border-color: var(--accent-dim);
}

.about__photo-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

/* ── Projects ────────────────────────────────── */
.projects {
  background: var(--bg-secondary);
}

.projects__grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.5rem;
}

.project-card {
  background: var(--bg-card);
  border: 1px dashed var(--border);
  border-radius: var(--radius);
  padding: 2.5rem 2rem;
  text-align: center;
  transition: all var(--transition);
}

.project-card--real {
  border-style: solid;
  text-align: left;
  padding: 0;
  overflow: hidden;
  display: flex;
  flex-direction: column;
}

.project-card--real .project-card__body {
  flex: 1;
}

.project-card--real:hover {
  border-color: var(--accent-dim);
  background: var(--bg-card-hover);
}

.project-card__image {
  width: 100%;
  aspect-ratio: 16 / 9;
  overflow: hidden;
  background: var(--bg-primary);
}

.project-card__image-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  transition: transform 500ms ease;
}

.project-card--real:hover .project-card__image-img {
  transform: scale(1.05);
}

.project-card__body {
  padding: 1.5rem 2rem 1.25rem;
}

.project-card__icon {
  width: 48px;
  height: 48px;
  color: var(--accent-dim);
  margin: 0 auto 1.25rem;
  opacity: 0.6;
}

.project-card__icon svg {
  width: 100%;
  height: 100%;
}

.project-card__title {
  font-size: 1.1rem;
  font-weight: 600;
  margin-bottom: 0.75rem;
  color: var(--text-muted);
}

.project-card__desc {
  font-size: 0.9rem;
  color: var(--text-muted);
  line-height: 1.7;
}

.project-card__desc a {
  color: var(--accent);
}

.project-card__tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-top: 1rem;
}

.project-card__tag {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  padding: 0.25rem 0.65rem;
  border-radius: 4px;
  background: rgba(34, 211, 160, 0.1);
  color: var(--accent);
  border: 1px solid rgba(34, 211, 160, 0.2);
}

.project-card--real .project-card__title {
  color: var(--text-primary);
}

.project-card--real .project-card__desc {
  color: var(--text-secondary);
}

.project-card__link {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--accent);
  transition: gap var(--transition);
}

.project-card__link:hover {
  gap: 0.6rem;
}

.project-card__footer {
  border-top: 1px solid var(--border);
  padding: 1rem 2rem;
  display: flex;
  align-items: center;
}

/* ── Contact ─────────────────────────────────── */
.contact__form {
  max-width: 640px;
  margin: 0 auto;
}

.contact__form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
}

.contact__form-group {
  margin-bottom: 1.25rem;
}

.contact__label {
  display: block;
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--text-secondary);
  margin-bottom: 0.4rem;
}

.contact__input {
  width: 100%;
  padding: 0.8rem 1rem;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text-primary);
  font-family: var(--font-sans);
  font-size: 0.95rem;
  transition: border-color var(--transition), box-shadow var(--transition);
  outline: none;
}

.contact__input:focus {
  border-color: var(--border-focus);
  box-shadow: 0 0 0 3px var(--accent-glow);
}

.contact__input::placeholder {
  color: var(--text-muted);
}

.contact__textarea {
  resize: vertical;
  min-height: 120px;
}

.contact__submit {
  width: 100%;
  justify-content: center;
  font-size: 1rem;
  padding: 1rem;
}

.contact__form-note {
  text-align: center;
  font-size: 0.8rem;
  color: var(--text-muted);
  margin-top: 1rem;
}

/* ── Footer ──────────────────────────────────── */
.footer {
  border-top: 1px solid var(--border);
  padding: 2.5rem 0;
}

.footer__inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1.25rem;
}

.footer__social {
  display: flex;
  gap: 1.25rem;
}

.footer__social-link {
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-muted);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  transition: all var(--transition);
}

.footer__social-link:hover {
  color: var(--accent);
  border-color: var(--accent);
  transform: translateY(-2px);
}

.footer__social-link svg {
  width: 20px;
  height: 20px;
}

.footer__copy {
  font-size: 0.82rem;
  color: var(--text-muted);
}

/* ── Toast ───────────────────────────────────── */
.toast {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 1rem 1.5rem;
  font-size: 0.9rem;
  color: var(--text-primary);
  box-shadow: 0 8px 32px rgba(0,0,0,0.4);
  transform: translateY(calc(100% + 2rem));
  opacity: 0;
  transition: all 400ms cubic-bezier(0.4, 0, 0.2, 1);
  z-index: 2000;
  max-width: 400px;
}

.toast.show {
  transform: translateY(0);
  opacity: 1;
}

.toast.success {
  border-color: var(--accent);
}

.toast.error {
  border-color: #ef4444;
}

/* ── Responsive ──────────────────────────────── */
/* ── Language toggle ──────────────────────────── */
.lang-toggle {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  background: transparent;
  border: 1.5px solid var(--border);
  color: var(--text-secondary);
  font-family: var(--font-sans);
  font-size: 0.8rem;
  font-weight: 600;
  padding: 0.35rem 0.75rem;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: all var(--transition);
  line-height: 1;
}

.lang-toggle:hover {
  border-color: var(--accent);
  color: var(--accent);
}

.lang-toggle:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

.lang-toggle__flag {
  font-size: 1.1em;
  line-height: 1;
}

@media (max-width: 768px) {
  .lang-toggle {
    font-size: 0.75rem;
    padding: 0.25rem 0.6rem;
  }
}

@media (max-width: 768px) {
  .header__nav {
    position: fixed;
    top: var(--header-h);
    left: 0;
    width: 100%;
    background: rgba(10, 14, 23, 0.98);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border);
    padding: 1.5rem;
    transform: translateY(-110%);
    opacity: 0;
    transition: all 350ms ease;
  }

  .header__nav.open {
    transform: translateY(0);
    opacity: 1;
  }

  .header__nav-list {
    flex-direction: column;
    gap: 1.25rem;
    align-items: center;
  }

  .header__hamburger {
    display: flex;
  }

  .hero__title {
    font-size: 1.8rem;
  }

  .hero__desc {
    font-size: 1rem;
  }

  .hero__actions {
    flex-direction: column;
  }

  .btn {
    width: 100%;
    justify-content: center;
  }

  .about__grid {
    grid-template-columns: 1fr;
    gap: 2.5rem;
  }

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

  .about__aside {
    flex-direction: row;
    flex-wrap: wrap;
  }

  .about__card {
    flex: 1;
    min-width: 100px;
  }

  .contact__form-row {
    grid-template-columns: 1fr;
  }

  .section {
    padding: 60px 0;
  }

  .section__subtitle {
    margin-bottom: 40px;
  }

  .toast {
    left: 1rem;
    right: 1rem;
    bottom: 1rem;
  }
}

@media (max-width: 480px) {
  .hero__tagline {
    font-size: 0.75rem;
  }

  .hero__title {
    font-size: 1.5rem;
  }

  .section__title {
    font-size: 1.5rem;
  }

  .services__grid,
  .projects__grid {
    grid-template-columns: 1fr;
  }
}