/* ===== CURSOR GLOW ===== */
.cursor-glow {
  pointer-events: none;
  position: fixed;
  inset: 0;
  z-index: 9999;
  background: radial-gradient(
    600px circle at var(--x, -999px) var(--y, -999px),
    rgba(0, 217, 255, 0.07) 0%,
    transparent 70%
  );
}

/* ===== RESET & BASE ===== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --bg:        #0a192f;
  --bg2:       #112240;
  --cyan:      #00D9FF;
  --cyan-dim:  rgba(0, 217, 255, 0.10);
  --text:      #CCD6F6;
  --text-muted:#8892A4;
  --text-dim:  #4A5568;
  --border:    rgba(255,255,255,0.06);
  --font:      'Inter', sans-serif;
  --ease:      cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

html { scroll-behavior: smooth; }

body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--text-muted);
  line-height: 1.7;
  overflow-x: hidden;
}

a { color: inherit; text-decoration: none; }
ul { list-style: none; }

/* ===== TWO-COLUMN LAYOUT ===== */
.layout {
  display: flex;
  min-height: 100vh;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 40px;
  gap: 0;
}

/* ===== SIDEBAR (LEFT, FIXED) ===== */
.sidebar {
  width: 380px;
  flex-shrink: 0;
  position: sticky;
  top: 0;
  height: 100vh;
  display: flex;
  flex-direction: column;
  padding: 80px 0 80px;
}

.sidebar__inner {
  display: flex;
  flex-direction: column;
  height: 100%;
}

.sidebar__top { margin-bottom: auto; }
.sidebar__top a { text-decoration: none; }
.sidebar__top a:hover .sidebar__name { color: var(--cyan); transition: color 0.2s; }

.sidebar__name {
  font-size: 38px;
  font-weight: 800;
  color: var(--text);
  line-height: 1.1;
  letter-spacing: -0.02em;
  margin-bottom: 10px;
}

.sidebar__name--sm {
  font-size: 16px;
  font-weight: 700;
  color: var(--text);
}

.sidebar__role {
  font-size: 16px;
  font-weight: 500;
  color: var(--cyan);
  margin-bottom: 16px;
}

.sidebar__desc {
  font-size: 14px;
  color: var(--text-muted);
  max-width: 280px;
  line-height: 1.75;
}

/* ===== SIDEBAR NAV ===== */
.sidebar__nav {
  display: flex;
  flex-direction: column;
  gap: 4px;
  margin: 48px 0;
}

.nav-item {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 6px 0;
  cursor: pointer;
  transition: all 0.2s var(--ease);
  width: fit-content;
}

.nav-item__line {
  display: block;
  height: 1px;
  width: 32px;
  background: var(--text-dim);
  transition: width 0.25s var(--ease), background 0.25s;
  flex-shrink: 0;
}

.nav-item__label {
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-dim);
  transition: color 0.25s;
}

.nav-item:hover .nav-item__line,
.nav-item.active .nav-item__line {
  width: 56px;
  background: var(--cyan);
}

.nav-item:hover .nav-item__label,
.nav-item.active .nav-item__label {
  color: var(--text);
}

/* ===== SOCIAL ICONS ===== */
.sidebar__socials {
  display: flex;
  gap: 20px;
  align-items: center;
}

.sidebar__socials a {
  color: var(--text-dim);
  transition: color 0.2s, transform 0.2s;
  display: flex;
}
.sidebar__socials a:hover {
  color: var(--cyan);
  transform: translateY(-2px);
}

/* ===== CONTENT (RIGHT, SCROLLABLE) ===== */
.content {
  flex: 1;
  padding: 80px 0 80px 80px;
  min-width: 0;
}

/* ===== SECTIONS ===== */
.section {
  min-height: 100vh;
  padding: 80px 0;
  border-top: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  justify-content: center;
}
.section:first-child { border-top: none; }

.section__heading {
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--text);
  margin-bottom: 32px;
  display: none; /* скрыт на десктопе — навигация слева */
}

/* ===== ABOUT ===== */
.about__body p {
  font-size: 15px;
  line-height: 1.8;
  margin-bottom: 16px;
  color: var(--text-muted);
}
.about__body p:last-of-type { margin-bottom: 24px; }

.tag-list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 8px;
}

.tag {
  display: inline-block;
  font-size: 11px;
  font-weight: 600;
  color: var(--cyan);
  background: var(--cyan-dim);
  border: 1px solid rgba(0,217,255,0.18);
  border-radius: 999px;
  padding: 4px 12px;
  letter-spacing: 0.03em;
}

/* ===== PROJECT CARDS ===== */
.project-card {
  display: flex;
  gap: 24px;
  padding: 20px;
  border-radius: 12px;
  border: 1px solid transparent;
  margin-bottom: 12px;
  transition: background 0.2s, border-color 0.2s;
  cursor: pointer;
}

.project-card:hover {
  background: rgba(255,255,255,0.03);
  border-color: var(--border);
}

.project-card__preview {
  width: 120px;
  flex-shrink: 0;
  height: 80px;
  border-radius: 8px;
  overflow: hidden;
  border: 1px solid var(--border);
}

.project-card__img-placeholder {
  width: 100%;
  height: 100%;
  background: var(--bg2);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 11px;
  color: var(--text-dim);
  font-weight: 500;
}

.project-card__img-placeholder--dim {
  opacity: 0.4;
}

.project-card__info { flex: 1; min-width: 0; }

.project-card__header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 8px;
  margin-bottom: 8px;
}

.project-card__title {
  font-size: 15px;
  font-weight: 600;
  color: var(--text);
  line-height: 1.3;
  transition: color 0.2s;
}

.project-card:hover .project-card__title { color: var(--cyan); }

.project-card__arrow {
  color: var(--text-dim);
  flex-shrink: 0;
  margin-top: 2px;
  transition: color 0.2s, transform 0.2s;
}
.project-card:hover .project-card__arrow {
  color: var(--cyan);
  transform: translate(2px, -2px);
}

.project-card__desc {
  font-size: 13px;
  color: var(--text-muted);
  line-height: 1.65;
  margin-bottom: 12px;
}

.project-card__tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.project-card--soon { opacity: 0.5; cursor: default; }
.project-card--soon:hover { background: transparent; border-color: transparent; }
.project-card--soon:hover .project-card__title { color: var(--text); }
.project-card--soon:hover .project-card__arrow { transform: none; color: var(--text-dim); }

/* ===== SERVICE CARDS ===== */
.service-card {
  display: flex;
  gap: 24px;
  padding: 24px 20px;
  border-radius: 12px;
  border: 1px solid transparent;
  margin-bottom: 8px;
  transition: background 0.2s, border-color 0.2s;
}
.service-card:hover {
  background: rgba(255,255,255,0.03);
  border-color: var(--border);
}

.service-card__num {
  font-size: 12px;
  font-weight: 700;
  color: var(--cyan);
  flex-shrink: 0;
  width: 28px;
  padding-top: 2px;
}

.service-card__title {
  font-size: 15px;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 8px;
}

.service-card__desc {
  font-size: 13px;
  color: var(--text-muted);
  line-height: 1.65;
  margin-bottom: 12px;
}

.service-card__price {
  font-size: 13px;
  font-weight: 700;
  color: var(--cyan);
}

/* ===== CONTACT ===== */
.contact__text {
  font-size: 22px;
  font-weight: 600;
  color: var(--text);
  line-height: 1.5;
  margin-bottom: 36px;
  max-width: 480px;
}

.contact__links {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
}

/* ===== BUTTONS ===== */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 24px;
  border-radius: 8px;
  font-size: 13px;
  font-weight: 600;
  transition: all 0.2s var(--ease);
  cursor: pointer;
  border: none;
  font-family: var(--font);
}

.btn--primary {
  background: var(--cyan);
  color: #0A0D14;
}
.btn--primary:hover {
  background: #33E4FF;
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(0, 217, 255, 0.25);
}

.btn--ghost {
  background: transparent;
  color: var(--cyan);
  border: 1px solid rgba(0,217,255,0.35);
}
.btn--ghost:hover {
  background: var(--cyan-dim);
  transform: translateY(-2px);
}

.btn--sm { padding: 8px 16px; font-size: 12px; }

/* ===== FOOTER ===== */
.footer {
  padding-top: 60px;
  font-size: 12px;
  color: var(--text-dim);
}

/* ===== MOBILE HEADER ===== */
.mobile-header {
  display: none;
  position: fixed;
  top: 0; left: 0; right: 0;
  height: 60px;
  background: rgba(15,17,25,0.9);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
  padding: 0 20px;
  align-items: center;
  justify-content: space-between;
  z-index: 200;
}

.burger {
  display: flex;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
}
.burger span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--text);
  border-radius: 2px;
  transition: all 0.25s;
}

.mobile-menu {
  display: none;
  position: fixed;
  inset: 0;
  background: var(--bg);
  z-index: 199;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 36px;
}
.mobile-menu.open { display: flex; }
.mobile-link {
  font-size: 28px;
  font-weight: 700;
  color: var(--text);
  transition: color 0.2s;
}
.mobile-link:hover { color: var(--cyan); }

/* ===== RESPONSIVE ===== */
@media (max-width: 900px) {
  .layout { flex-direction: column; padding: 0; }
  .sidebar {
    position: static;
    height: auto;
    width: 100%;
    padding: 80px 24px 40px;
  }
  .sidebar__nav { display: none; }
  .sidebar__socials { margin-top: 32px; }
  .content { padding: 20px 24px 60px; }
  .section__heading { display: block; }
  .mobile-header { display: flex; }
  .sidebar { padding-top: 80px; }
}

@media (max-width: 580px) {
  .sidebar__name { font-size: 28px; }
  .project-card { flex-direction: column; }
  .project-card__preview { width: 100%; height: 120px; }
}