/* ============================================================
   Priotech Corporation — main.css
   Apple-style, minimal, clean
   ============================================================ */

/* ── 1. Design Tokens ───────────────────────────────────────── */
:root {
  --color-bg:           #FFFFFF;
  --color-bg-alt:       #F5F5F7;
  --color-bg-dark:      #1D1D1F;
  --color-text:         #1D1D1F;
  --color-text-muted:   #6E6E73;
  --color-accent:       #0071E3;
  --color-accent-light: rgba(0, 113, 227, 0.12);
  --color-accent-glow:  rgba(0, 113, 227, 0.25);
  --color-ai:           #FF3B30;
  --color-border:       rgba(0, 0, 0, 0.08);
  --color-border-dark:  rgba(255, 255, 255, 0.1);

  --nav-bg:   rgba(255, 255, 255, 0.8);
  --nav-blur: saturate(180%) blur(20px);

  --text-xs:   0.75rem;
  --text-sm:   0.875rem;
  --text-base: 1rem;
  --text-lg:   1.125rem;
  --text-xl:   1.25rem;
  --text-2xl:  1.5rem;
  --text-3xl:  2rem;
  --text-4xl:  2.75rem;
  --text-hero: clamp(2.6rem, 6vw, 5.2rem);

  --space-section: clamp(5rem, 10vw, 8rem);
  --max-width:     1200px;
  --nav-height:    56px;

  --radius-card: 20px;
  --radius-btn:  980px;

  --ease-out: cubic-bezier(0.25, 0.46, 0.45, 0.94);
  --duration: 0.3s;
}

/* ── 2. Reset & Base ────────────────────────────────────────── */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI',
               'Helvetica Neue', Arial, sans-serif;
  font-size: var(--text-base);
  color: var(--color-text);
  background: var(--color-bg);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

img, svg { display: block; max-width: 100%; }
a        { color: inherit; text-decoration: none; }
ul       { list-style: none; }
button   { font-family: inherit; cursor: pointer; border: none; background: none; }

/* ── 3. Layout Utilities ────────────────────────────────────── */
.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 clamp(1.25rem, 5vw, 3rem);
}

.section {
  padding: var(--space-section) 0;
}

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

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

/* ── 4. Section Header (shared) ─────────────────────────────── */
.section-label {
  display: block;
  font-size: var(--text-xs);
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--color-accent);
  margin-bottom: 1rem;
}

.section-title {
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 700;
  letter-spacing: -0.04em;
  line-height: 1.1;
  color: var(--color-text);
}

.section-sub {
  font-size: var(--text-lg);
  color: var(--color-text-muted);
  max-width: 560px;
  margin-top: 1rem;
  line-height: 1.7;
}

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

/* ── 5. Navigation ──────────────────────────────────────────── */
.nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 1000;
  height: var(--nav-height);
  background: var(--nav-bg);
  backdrop-filter: var(--nav-blur);
  -webkit-backdrop-filter: var(--nav-blur);
  border-bottom: 1px solid var(--color-border);
  transition: box-shadow var(--duration) var(--ease-out);
}

.nav--scrolled {
  box-shadow: 0 1px 24px rgba(0, 0, 0, 0.08);
}

.nav__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
  gap: 2rem;
}

.nav__logo {
  font-size: var(--text-xl);
  font-weight: 800;
  letter-spacing: -0.04em;
  color: var(--color-text);
  flex-shrink: 0;
}

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

.nav__links {
  display: flex;
  align-items: center;
  gap: 2rem;
}

.nav__link {
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--color-text-muted);
  transition: color var(--duration);
  white-space: nowrap;
}

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

.lang-switcher {
  display: flex;
  gap: 4px;
  align-items: center;
  flex-shrink: 0;
}

.lang-btn {
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.05em;
  padding: 4px 9px;
  border-radius: var(--radius-btn);
  border: 1.5px solid var(--color-border);
  background: transparent;
  color: var(--color-text-muted);
  transition: all var(--duration) var(--ease-out);
}

.lang-btn:hover {
  border-color: var(--color-text-muted);
  color: var(--color-text);
}

.lang-btn.active {
  background: var(--color-text);
  border-color: var(--color-text);
  color: white;
}

/* Hamburger */
.nav__hamburger {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 32px;
  height: 32px;
  padding: 4px;
  flex-shrink: 0;
}

.nav__hamburger span {
  display: block;
  width: 100%;
  height: 1.5px;
  background: var(--color-text);
  border-radius: 2px;
  transition: all var(--duration) var(--ease-out);
  transform-origin: center;
}

.nav__hamburger.open span:nth-child(1) { transform: translateY(6.5px) rotate(45deg); }
.nav__hamburger.open span:nth-child(2) { opacity: 0; transform: scaleX(0); }
.nav__hamburger.open span:nth-child(3) { transform: translateY(-6.5px) rotate(-45deg); }

/* ── 6. Hero ─────────────────────────────────────────────────── */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding-top: var(--nav-height);
  position: relative;
  overflow: hidden;
  background: var(--color-bg);
}

.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse 80% 55% at 50% -5%,
    rgba(0, 113, 227, 0.1) 0%, transparent 65%);
  pointer-events: none;
}

.hero__orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(90px);
  pointer-events: none;
  will-change: transform;
}

.hero__orb--1 {
  width: 700px;
  height: 700px;
  background: radial-gradient(circle, rgba(0, 113, 227, 0.08), transparent 70%);
  top: -200px;
  left: -150px;
  animation: orb-float 14s ease-in-out infinite;
}

.hero__orb--2 {
  width: 500px;
  height: 500px;
  background: radial-gradient(circle, rgba(100, 180, 255, 0.06), transparent 70%);
  bottom: -100px;
  right: -100px;
  animation: orb-float 18s ease-in-out infinite reverse;
  animation-delay: -5s;
}

@keyframes orb-float {
  0%, 100% { transform: translate(0, 0) scale(1); }
  33%       { transform: translate(30px, -40px) scale(1.04); }
  66%       { transform: translate(-20px, 20px) scale(0.97); }
}

.hero__content {
  position: relative;
  z-index: 1;
  max-width: 860px;
  padding: 0 1rem;
}

.hero__tag {
  display: inline-block;
  font-size: var(--text-xs);
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--color-accent);
  margin-bottom: 1.5rem;
  padding: 6px 16px;
  background: var(--color-accent-light);
  border-radius: var(--radius-btn);
}

.hero__headline {
  font-size: var(--text-hero);
  font-weight: 800;
  letter-spacing: -0.045em;
  line-height: 1.06;
  color: var(--color-text);
  margin-bottom: 1.75rem;
}

.hero__sub {
  font-size: clamp(1.05rem, 2vw, 1.3rem);
  color: var(--color-text-muted);
  max-width: 580px;
  margin: 0 auto 2.75rem;
  line-height: 1.7;
}

.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 15px 32px;
  background: var(--color-accent);
  color: white;
  border-radius: var(--radius-btn);
  font-size: var(--text-base);
  font-weight: 600;
  letter-spacing: -0.01em;
  transition: all var(--duration) var(--ease-out);
  box-shadow: 0 4px 24px rgba(0, 113, 227, 0.3);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 36px rgba(0, 113, 227, 0.42);
  background: #0077ED;
}

.btn-primary svg {
  transition: transform var(--duration) var(--ease-out);
}
.btn-primary:hover svg {
  transform: translateX(4px);
}

.hero__scroll-hint {
  position: absolute;
  bottom: 2.5rem;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
  opacity: 0.35;
  animation: scroll-fade 2.5s ease-in-out infinite;
}

.hero__scroll-hint span {
  width: 1px;
  height: 40px;
  background: var(--color-text);
  border-radius: 2px;
}

@keyframes scroll-fade {
  0%, 100% { opacity: 0.2; transform: translateX(-50%) translateY(0); }
  50%       { opacity: 0.5; transform: translateX(-50%) translateY(6px); }
}

/* ── 7. About ────────────────────────────────────────────────── */
.about__inner {
  max-width: 760px;
}

.about__title {
  font-size: clamp(1.75rem, 3.5vw, 2.5rem);
  font-weight: 700;
  letter-spacing: -0.03em;
  line-height: 1.2;
  margin-bottom: 1.5rem;
  margin-top: 1rem;
}

.about__body {
  font-size: var(--text-lg);
  color: var(--color-text-muted);
  line-height: 1.8;
}

.about__body strong {
  color: var(--color-text);
  font-weight: 600;
}

.about__stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2px;
  margin-top: 4rem;
  border-radius: var(--radius-card);
  overflow: hidden;
  border: 1px solid var(--color-border);
}

.stat {
  padding: 2.5rem 2rem;
  background: var(--color-bg);
  text-align: center;
  border-right: 1px solid var(--color-border);
}

.stat:last-child {
  border-right: none;
}

.stat__number {
  display: block;
  font-size: clamp(2.5rem, 5vw, 3.5rem);
  font-weight: 800;
  letter-spacing: -0.05em;
  color: var(--color-accent);
  line-height: 1;
  margin-bottom: 0.5rem;
}

.stat__label {
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--color-text);
  display: block;
}

.stat__sub {
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  margin-top: 0.25rem;
  display: block;
}

/* ── 8. Services ─────────────────────────────────────────────── */
.services__header {
  margin-bottom: 3.5rem;
  text-align: center;
}

.services__flow {
  margin: 2rem 0 3.5rem;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5px;
  background: var(--color-border);
  border-radius: var(--radius-card);
  overflow: hidden;
  border: 1px solid var(--color-border);
}

.flow-card {
  background: white;
  padding: 2.5rem 2rem;
  position: relative;
  transition: background var(--duration) var(--ease-out);
}

.flow-card:hover {
  background: var(--color-bg-alt);
}

.flow-card__icon {
  width: 44px;
  height: 44px;
  margin-bottom: 1.5rem;
  color: var(--color-accent);
}

.flow-card__title {
  font-size: var(--text-lg);
  font-weight: 650;
  letter-spacing: -0.02em;
  margin-bottom: 0.75rem;
  color: var(--color-text);
}

.flow-card__body {
  font-size: var(--text-lg);
  color: var(--color-text-muted);
  line-height: 1.7;
  margin: 0;
}

.flow-card__body strong {
  font-weight: 700;
  color: var(--color-text);
}

.flow-card__body .ai {
  color: var(--color-ai);
}

.services__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5px;
  background: var(--color-border);
  border-radius: var(--radius-card);
  overflow: hidden;
  border: 1px solid var(--color-border);
}

.service-card {
  background: white;
  padding: 2.5rem 2rem;
  transition: all var(--duration) var(--ease-out);
  position: relative;
}

.service-card:hover {
  background: var(--color-bg-alt);
}

.service-card__icon {
  width: 44px;
  height: 44px;
  margin-bottom: 1.5rem;
  color: var(--color-accent);
}

.service-card__title {
  font-size: var(--text-lg);
  font-weight: 650;
  letter-spacing: -0.02em;
  margin-bottom: 0.75rem;
  color: var(--color-text);
}

.service-card__desc {
  font-size: var(--text-lg);
  color: var(--color-text-muted);
  line-height: 1.7;
}

.service-card__desc strong {
  color: var(--color-ai);
}

/* ── 9. Expertise ────────────────────────────────────────────── */
.expertise__header {
  text-align: center;
  margin-bottom: 3.5rem;
}

.expertise__header .section-sub {
  margin: 1rem auto 0;
  max-width: 800px;
}

.expertise__grid {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  justify-content: center;
}

.expertise-pill {
  padding: 0.75rem 1.5rem;
  background: white;
  border-radius: var(--radius-btn);
  font-size: var(--text-sm);
  font-weight: 500;
  border: 1px solid var(--color-border);
  color: var(--color-text);
  transition: all var(--duration) var(--ease-out);
  cursor: default;
}

.expertise-pill:hover {
  background: var(--color-accent);
  color: white;
  border-color: var(--color-accent);
  transform: translateY(-2px);
  box-shadow: 0 4px 16px rgba(0, 113, 227, 0.2);
}

/* ── 10. Why Priotech ─────────────────────────────────────────── */
.why__header {
  margin-bottom: 3.5rem;
}

.why__grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 3rem 2rem;
}

.why-item__number {
  display: block;
  font-size: 4rem;
  font-weight: 800;
  letter-spacing: -0.06em;
  line-height: 1;
  color: var(--color-accent);
  opacity: 0.15;
  margin-bottom: 1.25rem;
}

.why-item__title {
  font-size: var(--text-xl);
  font-weight: 700;
  letter-spacing: -0.02em;
  margin-bottom: 0.75rem;
}

.why-item__desc {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  line-height: 1.75;
}

/* ── 11. Contact ─────────────────────────────────────────────── */
.contact__inner {
  text-align: center;
  max-width: 640px;
  margin: 0 auto;
}

.contact__inner .section-title {
  color: white;
}

.contact__inner .section-sub {
  color: rgba(255, 255, 255, 0.6);
  margin: 1rem auto 2.5rem;
}

.contact__inner .section-label {
  color: rgba(100, 180, 255, 0.85);
}

.contact__email-wrap {
  margin: 2rem 0;
}

.contact__email {
  display: inline-block;
  font-size: clamp(1.25rem, 3vw, 1.75rem);
  font-weight: 700;
  letter-spacing: -0.03em;
  color: white;
  padding: 16px 36px;
  border: 1.5px solid rgba(255, 255, 255, 0.2);
  border-radius: var(--radius-btn);
  transition: all var(--duration) var(--ease-out);
  background: rgba(255, 255, 255, 0.05);
}

.contact__email:hover {
  background: var(--color-accent);
  border-color: var(--color-accent);
  box-shadow: 0 8px 32px rgba(0, 113, 227, 0.4);
  transform: translateY(-2px);
}

.contact__location {
  font-size: var(--text-sm);
  color: rgba(255, 255, 255, 0.4);
  margin-top: 1.5rem;
  letter-spacing: 0.05em;
}

/* ── 12. Footer ──────────────────────────────────────────────── */
.footer {
  background: #111113;
  color: rgba(255, 255, 255, 0.4);
  padding: 3rem 0;
  text-align: center;
  border-top: 1px solid rgba(255, 255, 255, 0.06);
}

.footer__logo {
  font-size: var(--text-xl);
  font-weight: 800;
  letter-spacing: -0.04em;
  color: white;
  margin-bottom: 0.5rem;
}

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

.footer__tagline {
  font-size: var(--text-sm);
  margin-bottom: 1.5rem;
  color: rgba(255, 255, 255, 0.35);
}

.footer__rights {
  font-size: var(--text-xs);
  color: rgba(255, 255, 255, 0.2);
}

/* ── 13. Scroll Reveal ───────────────────────────────────────── */
.reveal {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 0.7s var(--ease-out), transform 0.7s var(--ease-out);
}

.reveal.visible {
  opacity: 1;
  transform: none;
}

.reveal-delay-1 { transition-delay: 0.1s; }
.reveal-delay-2 { transition-delay: 0.2s; }
.reveal-delay-3 { transition-delay: 0.3s; }
.reveal-delay-4 { transition-delay: 0.4s; }
.reveal-delay-5 { transition-delay: 0.5s; }

/* ── 14. Responsive ──────────────────────────────────────────── */
@media (max-width: 1024px) {
  .services__grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .services__flow {
    grid-template-columns: 1fr;
  }
  .why__grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 768px) {
  .nav__links,
  .lang-switcher {
    display: none;
  }

  .nav__hamburger {
    display: flex;
  }

  /* Mobile overlay menu */
  .nav--mobile-open .nav__links {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 2rem;
    position: fixed;
    inset: var(--nav-height) 0 0 0;
    background: rgba(255, 255, 255, 0.97);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    z-index: 999;
  }

  .nav--mobile-open .nav__link {
    font-size: var(--text-xl);
    font-weight: 600;
  }

  .nav--mobile-open .lang-switcher {
    display: flex;
    position: fixed;
    bottom: 3rem;
    left: 50%;
    transform: translateX(-50%);
    z-index: 1000;
  }

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

  .stat {
    border-right: none;
    border-bottom: 1px solid var(--color-border);
  }

  .stat:last-child {
    border-bottom: none;
  }

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

@media (max-width: 580px) {
  .why__grid {
    grid-template-columns: 1fr;
  }

  .hero__headline {
    letter-spacing: -0.03em;
  }

  .about__stats {
    border-radius: var(--radius-card);
  }
}

/* Intro note */
.intro__note {
  margin-top: 1.75rem;
  font-size: var(--text-sm);
  color: var(--color-text-muted);
}

/* ── Print ─────────────────────────────────────────────────────
   Landscape, presentation-style print: hide web-only chrome,
   force grids wide, each major section on its own page,
   keep cards intact, footer sits with contact. */
@page {
  size: 11in 8.5in;
  margin: 12mm;
}

@media print {
  html, body {
    background: #fff !important;
    -webkit-print-color-adjust: exact !important;
    print-color-adjust: exact !important;
  }

  .reveal,
  .reveal.visible {
    opacity: 1 !important;
    transform: none !important;
    transition: none !important;
  }

  /* Web-only chrome hidden */
  .nav,
  .nav__hamburger,
  .lang-switcher,
  .hero__scroll-hint,
  .hero__orb,
  .btn-primary,
  .intro__note {
    display: none !important;
  }

  .hero::before {
    display: none !important;
  }

  /* Each major section on its own page; footer rides with contact */
  #hero,
  #services,
  #about,
  #expertise,
  #why,
  #contact {
    page-break-before: always;
    break-before: page;
  }

  .footer {
    page-break-before: avoid !important;
    break-before: avoid !important;
  }

  section,
  .intro,
  .hero,
  .footer {
    min-height: auto !important;
    padding: 1rem 1.25rem !important;
  }

  /* Intro is the title slide — stays on page 1, vertically centered */
  .intro {
    page-break-before: avoid !important;
    break-before: auto !important;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    min-height: calc(8.5in - 28mm) !important;
  }

  /* Override mobile/tablet breakpoints — assume full landscape width */
  .services__flow {
    grid-template-columns: repeat(3, 1fr) !important;
  }
  .services__grid {
    grid-template-columns: repeat(3, 1fr) !important;
  }
  .why__grid {
    grid-template-columns: repeat(2, 1fr) !important;
  }
  .about__stats {
    grid-template-columns: repeat(3, 1fr) !important;
  }

  /* Grids may flow, but individual cards/items must stay intact */
  .services__flow,
  .services__grid,
  .why__grid,
  .about__stats,
  .expertise__list {
    page-break-inside: auto !important;
    break-inside: auto !important;
  }

  .flow-card,
  .service-card,
  .stat,
  .why__item,
  .expertise__pill,
  .expertise__list li {
    page-break-inside: avoid;
    break-inside: avoid;
  }

  /* Tighter spacing so content fits per page */
  .services__header {
    margin-bottom: 1.25rem !important;
  }

  .service-card,
  .flow-card {
    padding: 1.5rem 1.25rem !important;
  }

  .stat {
    padding: 1.75rem 1rem !important;
  }

  .about__stats {
    margin-top: 1.75rem !important;
  }

  /* Keep colored palettes */
  .section--dark,
  .footer {
    background: var(--color-bg-dark) !important;
    color: #fff !important;
  }

  /* Typography tuning for a title-slide feel */
  .hero__headline {
    font-size: clamp(2.2rem, 5vw, 3.4rem) !important;
    margin-bottom: 1rem !important;
  }

  .hero__sub {
    margin-bottom: 0 !important;
  }

  .intro .hero__headline {
    font-size: clamp(2.6rem, 6vw, 4rem) !important;
  }

  .section-title {
    font-size: clamp(1.8rem, 3.2vw, 2.4rem) !important;
  }
}