/* ==========================================================================
   NanoRa Technologies — about.css
   Page-specific styles for the About page (about.html). Reuses every
   color, gradient, radius, shadow and component already defined in
   style.css / animation.css / responsive.css — only adds the layout
   patterns this page needs that the homepage doesn't already have:
   breadcrumb, about hero, who-we-are split, mission/vision cards,
   values/why grids, the vertical development process flow, the
   industry grid, and the quality commitment layout.
   Loaded AFTER style.css / animation.css / responsive.css.
   ========================================================================== */



/* --------------------------------------------------------------------------
   About Hero
   -------------------------------------------------------------------------- */
.about-hero {
  position: relative;
  min-height: 82vh;
  display: flex;
  align-items: flex-end;
  overflow: hidden;
  padding-top: 120px;
}
.about-hero-bg { position: absolute; inset: 0; z-index: 0; }
.about-hero-img { width: 100%; height: 100%; object-fit: cover; }
.about-hero-overlay {
  position: absolute; inset: 0;
  background:
    linear-gradient(180deg, rgba(6,8,22,0.55) 0%, rgba(6,8,22,0.82) 62%, var(--bg) 100%),
    linear-gradient(90deg, rgba(6,8,22,0.85) 0%, rgba(6,8,22,0.3) 60%);
}
.about-hero-content {
  position: relative;
  z-index: 2;
  padding-bottom: 76px;
  max-width: 740px;
}
.about-hero-title {
  font-family: var(--font-display);
  font-size: clamp(32px, 4.8vw, 54px);
  letter-spacing: -0.03em;
  margin-bottom: 18px;
}
.about-hero-desc {
  color: var(--subtext);
  font-size: 17.5px;
  max-width: 600px;
  margin-bottom: 30px;
}

/* --------------------------------------------------------------------------
   Who We Are
   -------------------------------------------------------------------------- */
.who-inner {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: 70px;
  align-items: center;
}
.who-img {
  width: 100%;
  height: 440px;
  object-fit: cover;
  border-radius: var(--radius-lg);
  border: 1px solid var(--border);
  box-shadow: var(--shadow-card);
}
.who-content .section-desc { margin-bottom: 16px; }
.who-content .section-desc:last-child { margin-bottom: 0; }

/* --------------------------------------------------------------------------
   Mission & Vision — reuses .glass-card
   -------------------------------------------------------------------------- */
.mv-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 28px;
}
.mv-card { padding: 40px; }
.mv-card .service-icon { margin-bottom: 22px; }
.mv-card .section-tag { margin-bottom: 12px; }
.mv-card .section-title { font-size: clamp(22px, 2.6vw, 28px); margin-bottom: 14px; }

/* --------------------------------------------------------------------------
   Core Values — reuses .service-icon
   -------------------------------------------------------------------------- */
.values-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 26px;
}
.value-card {
  padding: 32px 26px;
  border-radius: var(--radius-lg);
  background: var(--card);
  border: 1px solid var(--border);
  backdrop-filter: blur(20px);
  transition: transform 0.4s var(--ease), box-shadow 0.4s ease;
}
.value-card:hover { transform: translateY(-6px); box-shadow: 0 20px 44px rgba(79,70,229,0.2); }
.value-card .service-icon { margin-bottom: 18px; }
.value-card h3 { font-size: 17px; margin-bottom: 8px; }
.value-card p { color: var(--subtext); font-size: 14px; }

/* --------------------------------------------------------------------------
   Why Choose NanoRa
   -------------------------------------------------------------------------- */
.why-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.why-card {
  padding: 30px 24px;
  border-radius: var(--radius-lg);
  background: var(--card);
  border: 1px solid var(--border);
  backdrop-filter: blur(20px);
  transition: transform 0.4s var(--ease);
}
.why-card:hover { transform: translateY(-6px); }
.why-card .service-icon { margin-bottom: 16px; }
.why-card h3 { font-size: 16.5px; margin-bottom: 8px; }
.why-card p { color: var(--subtext); font-size: 13.5px; }

/* --------------------------------------------------------------------------
   Development Process — vertical flow with a scroll-driven progress line
   (fill + active-step highlighting handled by about.js)
   -------------------------------------------------------------------------- */
.process-flow {
  position: relative;
  max-width: 720px;
  margin: 0 auto;
  padding-left: 56px;
}
.process-progress-track {
  position: absolute;
  top: 6px;
  left: 23px;
  width: 2px;
  height: calc(100% - 12px);
  background: rgba(255,255,255,0.08);
  border-radius: 2px;
}
.process-progress-fill {
  position: absolute;
  top: 0; left: 0;
  width: 100%;
  height: 0%;
  background: var(--grad-secondary);
  border-radius: 2px;
  transition: height 0.2s ease-out;
}

.process-step {
  position: relative;
  display: flex;
  gap: 24px;
  padding-bottom: 46px;
}
.process-step:last-child { padding-bottom: 0; }

.process-icon {
  position: absolute;
  left: -56px;
  top: 0;
  width: 48px; height: 48px;
  border-radius: 50%;
  background: var(--card-solid);
  border: 2px solid var(--border);
  display: flex; align-items: center; justify-content: center;
  font-size: 17px;
  color: var(--subtext);
  z-index: 2;
  transition: all 0.4s var(--ease);
}
.process-step.active .process-icon {
  background: var(--grad-primary);
  border-color: transparent;
  color: #fff;
  box-shadow: 0 0 0 6px rgba(79,70,229,0.15);
}

.process-text {
  padding: 4px 0 0;
  transition: opacity 0.4s ease;
}
.process-text h4 { font-size: 18px; margin-bottom: 6px; }
.process-text p { color: var(--subtext); font-size: 14.5px; max-width: 460px; }

/* --------------------------------------------------------------------------
   Industries — icon grid, same visual family as .tech-item
   -------------------------------------------------------------------------- */
.industry-grid { display: grid; grid-template-columns: repeat(6, 1fr); gap: 20px; }
.industry-item {
  padding: 26px 12px;
  border-radius: var(--radius-md);
  background: var(--card);
  border: 1px solid var(--border);
  text-align: center;
  transition: transform 0.35s var(--ease), background 0.35s ease;
}
.industry-item i { font-size: 26px; color: var(--secondary); margin-bottom: 10px; display: block; }
.industry-item span { font-size: 12.5px; color: var(--subtext); font-weight: 600; }
.industry-item:hover { transform: translateY(-6px) scale(1.04); background: rgba(255,255,255,0.12); }

/* --------------------------------------------------------------------------
   Commitment to Quality
   -------------------------------------------------------------------------- */
.quality-inner {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: 60px;
  align-items: center;
}
.quality-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 18px;
}
.quality-item {
  padding: 24px 14px;
  text-align: center;
  border-radius: var(--radius-md);
  background: var(--card);
  border: 1px solid var(--border);
  backdrop-filter: blur(16px);
  transition: transform 0.35s var(--ease);
}
.quality-item:hover { transform: translateY(-5px); }
.quality-item .service-icon { width: 46px; height: 46px; font-size: 17px; margin: 0 auto 12px; }
.quality-item h4 { font-size: 13px; }

/* --------------------------------------------------------------------------
   Final CTA — two-button variant
   -------------------------------------------------------------------------- */
.cta-buttons { display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; position: relative; }
.cta-outline-on-dark { border-color: rgba(255,255,255,0.4); color: #fff; }
.cta-outline-on-dark:hover { border-color: #fff; background: rgba(255,255,255,0.12); }

/* --------------------------------------------------------------------------
   Mobile (single source of truth for this page's phone layout)
   -------------------------------------------------------------------------- */
@media (max-width: 992px) {
  .who-inner { grid-template-columns: 1fr; gap: 44px; }
  .mv-grid { grid-template-columns: 1fr; gap: 20px; }
  .values-grid { grid-template-columns: repeat(2, 1fr); }
  .why-grid { grid-template-columns: repeat(2, 1fr); }
  .industry-grid { grid-template-columns: repeat(4, 1fr); }
  .quality-inner { grid-template-columns: 1fr; gap: 40px; }
  .quality-grid { grid-template-columns: repeat(4, 1fr); }
}

@media (max-width: 768px) {
  /* Hero */
  .about-hero { min-height: 66vh; padding-top: 96px; }
  .about-hero-content { padding-bottom: 40px; }
  .about-hero-title { font-size: clamp(27px, 8vw, 34px); margin-bottom: 12px; }
  .about-hero-desc { font-size: 15px; margin-bottom: 22px; }

  .who-img { height: 220px; }

  .mv-card { padding: 26px 22px; }
  .mv-card .section-title { font-size: 20px; }

  .values-grid { grid-template-columns: repeat(2, 1fr); gap: 12px; }
  .value-card { padding: 18px 14px; text-align: center; }
  .value-card .service-icon { width: 44px; height: 44px; margin: 0 auto 10px; font-size: 17px; }
  .value-card h3 { font-size: 13px; margin-bottom: 4px; }
  .value-card p { font-size: 11.5px; }

  .why-grid { grid-template-columns: repeat(2, 1fr); gap: 12px; }
  .why-card { padding: 18px 14px; text-align: center; }
  .why-card .service-icon { width: 44px; height: 44px; margin: 0 auto 10px; font-size: 17px; }
  .why-card h3 { font-size: 12.5px; margin-bottom: 4px; }
  .why-card p { font-size: 11.5px; }

  /* Process: tighter vertical rhythm, smaller connector rail */
  .process-flow { padding-left: 44px; }
  .process-progress-track { left: 17px; }
  .process-icon { left: -44px; width: 38px; height: 38px; font-size: 14px; }
  .process-step { gap: 16px; padding-bottom: 32px; }
  .process-text h4 { font-size: 15.5px; }
  .process-text p { font-size: 13px; }

  .industry-grid { grid-template-columns: repeat(3, 1fr); gap: 12px; }
  .industry-item { padding: 18px 8px; }
  .industry-item i { font-size: 20px; margin-bottom: 6px; }
  .industry-item span { font-size: 11px; }

  .quality-grid { grid-template-columns: repeat(2, 1fr); gap: 10px; }
  .quality-item { padding: 16px 10px; }
  .quality-item h4 { font-size: 11.5px; }

  .cta-buttons { flex-direction: column; width: 100%; }
  .cta-buttons .btn { width: 100%; justify-content: center; }
}

@media (max-width: 420px) {
  .values-grid, .why-grid { grid-template-columns: repeat(2, 1fr); }
  .industry-grid { grid-template-columns: repeat(2, 1fr); }
}