/* ============================================
   BlueCore Solutions — Stylesheet
   ============================================ */

:root {
  --color-primary: #0088cc;
  --color-primary-light: #00b4e6;
  --color-primary-dark: #006699;
  --color-accent: #00d4ff;
  --color-bg-dark: #060d18;
  --color-bg-section: #0a1628;
  --color-bg-card: #111d32;
  --color-bg-card-hover: #162440;
  --color-text: #e8edf5;
  --color-text-muted: #8899b0;
  --color-border: rgba(0, 180, 230, 0.12);
  --gradient-brand: linear-gradient(135deg, #006699 0%, #00b4e6 50%, #00d4ff 100%);
  --gradient-hero-overlay: linear-gradient(135deg, rgba(6, 13, 24, 0.92) 0%, rgba(6, 13, 24, 0.75) 50%, rgba(0, 102, 153, 0.4) 100%);
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 8px 32px rgba(0, 0, 0, 0.4);
  --shadow-glow: 0 0 40px rgba(0, 180, 230, 0.15);
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 20px;
  --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --header-height: 80px;
  --container-width: 1200px;
}

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

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

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  background-color: var(--color-bg-dark);
  color: var(--color-text);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

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

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

ul {
  list-style: none;
}

.container {
  width: 100%;
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 24px;
}

.section {
  padding: 100px 0;
}

.section--dark {
  background-color: var(--color-bg-section);
}

.section__header {
  text-align: center;
  max-width: 640px;
  margin: 0 auto 64px;
}

.section__tag {
  display: inline-block;
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-accent);
  margin-bottom: 12px;
}

.section__title {
  font-size: clamp(1.75rem, 4vw, 2.5rem);
  font-weight: 700;
  line-height: 1.2;
  margin-bottom: 16px;
}

.section__desc {
  color: var(--color-text-muted);
  font-size: 1.05rem;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 14px 28px;
  font-size: 0.95rem;
  font-weight: 600;
  border-radius: var(--radius-sm);
  border: 2px solid transparent;
  cursor: pointer;
  transition: var(--transition);
  white-space: nowrap;
}

.btn--primary {
  background: var(--gradient-brand);
  color: #fff;
  box-shadow: 0 4px 20px rgba(0, 136, 204, 0.35);
}

.btn--primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 30px rgba(0, 180, 230, 0.45);
}

.btn--outline {
  background: transparent;
  color: var(--color-text);
  border-color: rgba(255, 255, 255, 0.25);
}

.btn--outline:hover {
  border-color: var(--color-accent);
  color: var(--color-accent);
  background: rgba(0, 212, 255, 0.05);
}

.btn--lg {
  padding: 16px 36px;
  font-size: 1rem;
}

.btn--full {
  width: 100%;
}

/* Header / Nav */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  height: var(--header-height);
  background: rgba(6, 13, 24, 0.85);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--color-border);
  transition: var(--transition);
}

.header.scrolled {
  background: rgba(6, 13, 24, 0.97);
  box-shadow: var(--shadow-sm);
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
}

/* Brand mark — icon + wordmark (readable on dark backgrounds) */
.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
  flex-shrink: 0;
}

.brand__mark {
  width: 52px;
  height: 52px;
  object-fit: contain;
  filter: drop-shadow(0 0 12px rgba(0, 212, 255, 0.35));
  flex-shrink: 0;
}

.brand__wordmark {
  display: flex;
  flex-direction: column;
  line-height: 1.1;
}

.brand__title {
  font-size: 1.35rem;
  font-weight: 800;
  letter-spacing: 0.02em;
  background: linear-gradient(90deg, #ffffff 0%, #00d4ff 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.brand__subtitle {
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--color-accent);
  margin-top: 2px;
}

.brand--footer .brand__mark {
  width: 56px;
  height: 56px;
}

.brand--footer .brand__title {
  font-size: 1.5rem;
}

.brand--footer .brand__subtitle {
  font-size: 0.78rem;
}

.brand__descriptor {
  font-size: 0.8rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-text-muted);
  margin-top: 12px;
}

.nav__menu {
  display: flex;
  align-items: center;
  gap: 8px;
}

.nav__link {
  padding: 8px 16px;
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--color-text-muted);
  border-radius: var(--radius-sm);
  transition: var(--transition);
}

.nav__link:hover,
.nav__link.active {
  color: var(--color-text);
}

.nav__link--cta {
  background: var(--gradient-brand);
  color: #fff !important;
  margin-left: 8px;
  padding: 10px 20px;
}

.nav__link--cta:hover {
  box-shadow: 0 4px 16px rgba(0, 136, 204, 0.4);
}

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

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

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

.hero__bg {
  position: absolute;
  inset: 0;
  z-index: 0;
}

.hero__bg img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.hero__overlay {
  position: absolute;
  inset: 0;
  background: var(--gradient-hero-overlay);
}

.hero__content {
  position: relative;
  z-index: 1;
  padding: 80px 24px 100px;
  max-width: 820px;
}

.hero__eyebrow {
  font-size: 0.85rem;
  font-weight: 600;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--color-accent);
  margin-bottom: 20px;
}

.hero__title {
  font-size: clamp(2.2rem, 5.5vw, 3.5rem);
  font-weight: 800;
  line-height: 1.15;
  margin-bottom: 24px;
  background: linear-gradient(135deg, #ffffff 0%, #c8e6f5 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero__subtitle {
  font-size: clamp(1rem, 2vw, 1.2rem);
  color: var(--color-text-muted);
  max-width: 580px;
  margin-bottom: 36px;
  line-height: 1.7;
}

.hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  margin-bottom: 64px;
}

.hero__stats {
  display: flex;
  flex-wrap: wrap;
  gap: 48px;
  padding-top: 32px;
  border-top: 1px solid var(--color-border);
}

.hero__stat-number {
  display: block;
  font-size: 1.75rem;
  font-weight: 800;
  background: var(--gradient-brand);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero__stat-label {
  font-size: 0.85rem;
  color: var(--color-text-muted);
  margin-top: 4px;
}

/* About */
.about__grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: center;
}

.about__image {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-md);
}

.about__image img {
  width: 100%;
  aspect-ratio: 4/3;
  object-fit: cover;
}

.about__badge {
  position: absolute;
  bottom: 24px;
  left: 24px;
  display: flex;
  align-items: center;
  gap: 10px;
  background: rgba(6, 13, 24, 0.9);
  backdrop-filter: blur(8px);
  padding: 12px 20px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--color-border);
  font-size: 0.9rem;
  font-weight: 500;
}

.about__badge-icon {
  font-size: 1.2rem;
}

.about__text {
  color: var(--color-text-muted);
  margin-bottom: 16px;
  line-height: 1.75;
}

.about__features {
  margin-top: 28px;
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.about__features li {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 0.95rem;
  color: var(--color-text);
}

.about__features svg {
  flex-shrink: 0;
  color: var(--color-accent);
}

/* Services */
.services__grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.service-card {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 32px 24px;
  transition: var(--transition);
}

.service-card:hover {
  background: var(--color-bg-card-hover);
  border-color: rgba(0, 180, 230, 0.3);
  transform: translateY(-4px);
  box-shadow: var(--shadow-glow);
}

.service-card__icon {
  width: 56px;
  height: 56px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(0, 136, 204, 0.12);
  border-radius: var(--radius-sm);
  color: var(--color-accent);
  margin-bottom: 20px;
}

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

.service-card__desc {
  font-size: 0.9rem;
  color: var(--color-text-muted);
  line-height: 1.65;
}

/* Portfolio */
.portfolio__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}

.project-card {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: var(--transition);
}

.project-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-glow);
  border-color: rgba(0, 180, 230, 0.25);
}

.project-card--wide {
  grid-column: span 3;
  display: grid;
  grid-template-columns: 1.2fr 1fr;
}

.project-card--wide .project-card__image img {
  height: 100%;
  min-height: 260px;
}

.project-card__image {
  position: relative;
  overflow: hidden;
}

.project-card__image img {
  width: 100%;
  aspect-ratio: 16/10;
  object-fit: cover;
  transition: transform 0.5s ease;
}

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

.project-card__tag {
  position: absolute;
  top: 16px;
  left: 16px;
  background: rgba(6, 13, 24, 0.85);
  backdrop-filter: blur(8px);
  color: var(--color-accent);
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  padding: 6px 12px;
  border-radius: 20px;
  border: 1px solid var(--color-border);
}

.project-card__body {
  padding: 24px;
}

.project-card__title {
  font-size: 1.15rem;
  font-weight: 600;
  margin-bottom: 10px;
}

.project-card__desc {
  font-size: 0.9rem;
  color: var(--color-text-muted);
  line-height: 1.65;
}

/* CTA Banner */
.cta-banner {
  background: var(--gradient-brand);
  padding: 64px 0;
}

.cta-banner__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 32px;
  flex-wrap: wrap;
}

.cta-banner__text h2 {
  font-size: clamp(1.5rem, 3vw, 2rem);
  font-weight: 700;
  margin-bottom: 8px;
}

.cta-banner__text p {
  opacity: 0.9;
  font-size: 1.05rem;
}

.cta-banner .btn--primary {
  background: #fff;
  color: var(--color-primary-dark);
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.2);
  flex-shrink: 0;
}

.cta-banner .btn--primary:hover {
  background: #f0f8ff;
  box-shadow: 0 8px 30px rgba(0, 0, 0, 0.25);
}

/* Contact */
.contact__grid {
  display: grid;
  grid-template-columns: 1fr 1.1fr;
  gap: 64px;
  align-items: start;
}

.contact__desc {
  color: var(--color-text-muted);
  margin-bottom: 32px;
  line-height: 1.7;
}

.contact__details {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.contact__item {
  display: flex;
  align-items: flex-start;
  gap: 16px;
  padding: 16px;
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  transition: var(--transition);
}

a.contact__item:hover {
  border-color: rgba(0, 180, 230, 0.3);
  background: var(--color-bg-card-hover);
}

.contact__item-icon {
  flex-shrink: 0;
  width: 44px;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(0, 136, 204, 0.12);
  border-radius: var(--radius-sm);
  color: var(--color-accent);
}

.contact__item strong {
  display: block;
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--color-text-muted);
  margin-bottom: 4px;
}

.contact__form {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 36px;
}

.form-group {
  margin-bottom: 20px;
}

.form-group label {
  display: block;
  font-size: 0.85rem;
  font-weight: 500;
  margin-bottom: 8px;
  color: var(--color-text-muted);
}

.form-group input,
.form-group textarea {
  width: 100%;
  padding: 14px 16px;
  background: var(--color-bg-dark);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  color: var(--color-text);
  font-family: inherit;
  font-size: 0.95rem;
  transition: var(--transition);
}

.form-group input:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--color-primary-light);
  box-shadow: 0 0 0 3px rgba(0, 180, 230, 0.12);
}

.form-group input::placeholder,
.form-group textarea::placeholder {
  color: #4a5a70;
}

.form-group textarea {
  resize: vertical;
  min-height: 120px;
}

.contact__form-note {
  text-align: center;
  margin-top: 16px;
  font-size: 0.85rem;
  color: var(--color-text-muted);
}

.contact__form-note a {
  color: var(--color-accent);
}

.contact__form-note a:hover {
  text-decoration: underline;
}

/* Footer */
.footer {
  background: var(--color-bg-dark);
  border-top: 1px solid var(--color-border);
  padding: 48px 0 32px;
}

.footer__inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 24px;
  text-align: center;
}

.footer__brand {
  display: flex;
  flex-direction: column;
  align-items: center;
}

.footer__brand .brand {
  justify-content: center;
}

.footer__nav {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 8px 24px;
}

.footer__nav a {
  font-size: 0.9rem;
  color: var(--color-text-muted);
  transition: var(--transition);
}

.footer__nav a:hover {
  color: var(--color-accent);
}

.footer__copy {
  font-size: 0.85rem;
  color: var(--color-text-muted);
  opacity: 0.7;
}

/* Responsive */
@media (max-width: 1024px) {
  .services__grid {
    grid-template-columns: repeat(2, 1fr);
  }

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

  .project-card--wide {
    grid-column: span 2;
    grid-template-columns: 1fr;
  }
}

@media (max-width: 768px) {
  .section {
    padding: 72px 0;
  }

  .nav__toggle {
    display: flex;
    z-index: 1001;
  }

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

  .nav__toggle.open span:nth-child(2) {
    opacity: 0;
  }

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

  .nav__menu {
    position: fixed;
    top: 0;
    right: -100%;
    width: min(320px, 85vw);
    height: 100vh;
    flex-direction: column;
    align-items: stretch;
    padding: calc(var(--header-height) + 24px) 24px 24px;
    background: var(--color-bg-section);
    border-left: 1px solid var(--color-border);
    transition: right 0.35s ease;
    gap: 4px;
  }

  .nav__menu.open {
    right: 0;
  }

  .nav__link {
    padding: 14px 16px;
    font-size: 1rem;
  }

  .nav__link--cta {
    margin-left: 0;
    margin-top: 12px;
    text-align: center;
  }

  .about__grid {
    grid-template-columns: 1fr;
    gap: 40px;
  }

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

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

  .project-card--wide {
    grid-column: span 1;
  }

  .contact__grid {
    grid-template-columns: 1fr;
    gap: 40px;
  }

  .cta-banner__inner {
    flex-direction: column;
    text-align: center;
  }

  .hero__stats {
    gap: 32px;
  }
}

@media (max-width: 480px) {
  .brand--nav .brand__title {
    font-size: 1.15rem;
  }

  .brand--nav .brand__subtitle {
    font-size: 0.65rem;
    letter-spacing: 0.16em;
  }

  .brand--nav .brand__mark {
    width: 44px;
    height: 44px;
  }

  .hero__actions {
    flex-direction: column;
  }

  .hero__actions .btn {
    width: 100%;
  }

  .contact__form {
    padding: 24px;
  }
}