/* =============================================
   SolutionMall — Tools & Instruments Website
   Main Stylesheet — Deep Blue Professional Theme
   ============================================= */

/* ---- CSS Variables ---- */
:root {
  --navy-900: #080d1a;
  --navy-800: #0c1228;
  --navy-700: #101838;
  --navy-600: #141e48;
  --navy-500: #182458;
  --blue-700: #1730a0;
  --blue-600: #1e40af;
  --blue-500: #2563eb;
  --blue-400: #3b82f6;
  --blue-300: #60a5fa;
  --blue-200: #93c5fd;
  --blue-100: #dbeafe;
  --accent: #0ea5e9;
  --accent-light: #38bdf8;
  --gold: #f59e0b;
  --gold-light: #fcd34d;
  --white: #ffffff;
  --text-primary: #f1f5f9;
  --text-secondary: #cbd5e1;
  --text-muted: #8fa3bf;
  --card-bg: rgba(255,255,255,0.03);
  --card-border: rgba(255,255,255,0.07);
  --card-hover: rgba(255,255,255,0.07);
  --radius-sm: 6px;
  --radius: 12px;
  --radius-lg: 20px;
  --shadow: 0 4px 24px rgba(0,0,0,0.35);
  --shadow-lg: 0 8px 48px rgba(0,0,0,0.5);
  --transition: 0.3s cubic-bezier(0.4,0,0.2,1);
  --header-h: 72px;
}

/* ---- Reset & Base ---- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; font-size: 16px; }
body {
  font-family: 'Inter', 'Segoe UI', -apple-system, BlinkMacSystemFont, sans-serif;
  background: var(--navy-900);
  color: var(--text-primary);
  line-height: 1.65;
  overflow-x: hidden;
}
a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }
ul { list-style: none; }
button { cursor: pointer; border: none; background: none; font-family: inherit; color: inherit; }

/* ---- Typography ---- */
h1, h2, h3, h4, h5 { line-height: 1.25; font-weight: 700; color: var(--white); }
h1 { font-size: clamp(2rem, 5vw, 3.5rem); }
h2 { font-size: clamp(1.5rem, 3vw, 2.2rem); }
h3 { font-size: clamp(1.1rem, 2vw, 1.4rem); }
h4 { font-size: 1.05rem; }
p { color: var(--text-secondary); }

/* ---- Layout ---- */
.container { max-width: 1280px; margin: 0 auto; padding: 0 24px; }
.section { padding: 96px 0; }

/* ---- Section Headers ---- */
.section-tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(37,99,235,0.12);
  border: 1px solid rgba(37,99,235,0.28);
  color: var(--blue-300);
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  padding: 5px 14px;
  border-radius: 100px;
  margin-bottom: 14px;
}
.section-tag::before {
  content: '';
  width: 6px; height: 6px;
  background: var(--blue-400);
  border-radius: 50%;
  flex-shrink: 0;
}
.section-header { text-align: center; margin-bottom: 56px; }
.section-title { margin-bottom: 14px; }
.section-desc { max-width: 640px; margin: 0 auto; color: var(--text-muted); font-size: 1.05rem; line-height: 1.7; }

/* ---- Buttons ---- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 11px 26px;
  border-radius: var(--radius-sm);
  font-size: 0.93rem;
  font-weight: 600;
  transition: var(--transition);
  white-space: nowrap;
  cursor: pointer;
}
.btn-primary {
  background: var(--blue-500);
  color: var(--white);
  box-shadow: 0 0 20px rgba(37,99,235,0.35);
}
.btn-primary:hover {
  background: var(--blue-400);
  box-shadow: 0 0 30px rgba(59,130,246,0.5);
  transform: translateY(-2px);
}
.btn-secondary {
  background: rgba(255,255,255,0.1);
  color: var(--white);
  border: 1.5px solid rgba(255,255,255,0.25);
  backdrop-filter: blur(8px);
}
.btn-secondary:hover {
  background: rgba(255,255,255,0.16);
  border-color: rgba(255,255,255,0.5);
  transform: translateY(-2px);
}
.btn-outline {
  background: transparent;
  color: var(--white);
  border: 1.5px solid rgba(255,255,255,0.28);
}
.btn-outline:hover {
  background: rgba(255,255,255,0.07);
  border-color: rgba(255,255,255,0.55);
  transform: translateY(-2px);
}
.btn-outline-white {
  background: transparent;
  color: var(--white);
  border: 1.5px solid rgba(255,255,255,0.5);
}
.btn-outline-white:hover {
  background: rgba(255,255,255,0.1);
  border-color: var(--white);
  transform: translateY(-2px);
}
.btn-gold {
  background: var(--gold);
  color: #1a1a1a;
  font-weight: 700;
}
.btn-gold:hover {
  background: var(--gold-light);
  transform: translateY(-2px);
}
.btn-lg { padding: 15px 36px; font-size: 1.05rem; }
.btn-sm { padding: 8px 18px; font-size: 0.82rem; }

/* ---- Tags / Badges ---- */
.tag {
  display: inline-flex;
  align-items: center;
  padding: 3px 10px;
  background: rgba(37,99,235,0.12);
  border: 1px solid rgba(37,99,235,0.22);
  color: var(--blue-300);
  font-size: 0.7rem;
  font-weight: 600;
  border-radius: 100px;
  letter-spacing: 0.03em;
}

/* ============================================
   HEADER
   ============================================ */
.site-header {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 1000;
  padding: 16px 0;
  transition: var(--transition);
  background: transparent;
}
.site-header.scrolled {
  background: rgba(8,13,26,0.96);
  backdrop-filter: blur(24px);
  -webkit-backdrop-filter: blur(24px);
  padding: 10px 0;
  box-shadow: 0 1px 0 rgba(255,255,255,0.05), 0 4px 24px rgba(0,0,0,0.4);
}
.header-inner {
  display: flex;
  align-items: center;
  gap: 20px;
}

/* Logo */
.header-logo {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  flex-shrink: 0;
  gap: 2px;
}
.header-logo a { display: block; }
.logo-img {
  height: 38px;
  width: auto;
  filter: brightness(1.05);
}
.logo-url {
  font-size: 0.68rem;
  color: var(--blue-300);
  letter-spacing: 0.04em;
  transition: color var(--transition);
  display: block;
}
.logo-url:hover { color: var(--accent-light); }

/* Main Nav */
.main-nav {
  flex: 1;
  display: flex;
  justify-content: center;
}
.main-nav ul {
  display: flex;
  align-items: center;
  gap: 2px;
}
.main-nav a {
  padding: 7px 13px;
  font-size: 0.86rem;
  font-weight: 500;
  color: var(--text-secondary);
  border-radius: var(--radius-sm);
  transition: var(--transition);
  white-space: nowrap;
}
.main-nav a:hover, .main-nav a.active {
  color: var(--white);
  background: rgba(255,255,255,0.07);
}

/* Header Controls */
.header-controls {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}
.lang-switcher select {
  background: rgba(255,255,255,0.06);
  border: 1px solid rgba(255,255,255,0.12);
  color: var(--text-secondary);
  font-size: 0.8rem;
  padding: 7px 28px 7px 10px;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: var(--transition);
  appearance: none;
  -webkit-appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='10' height='6' viewBox='0 0 10 6'%3E%3Cpath d='M1 1l4 4 4-4' stroke='%2394a3b8' stroke-width='1.5' fill='none' stroke-linecap='round'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 8px center;
  font-family: inherit;
}
.lang-switcher select:hover, .lang-switcher select:focus {
  border-color: var(--blue-400);
  color: var(--white);
  outline: none;
}
.lang-switcher select option { background: var(--navy-800); color: var(--white); }

.mobile-menu-btn {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: 6px;
}
.mobile-menu-btn span {
  display: block;
  width: 22px; height: 2px;
  background: var(--white);
  border-radius: 2px;
  transition: var(--transition);
}

/* ============================================
   HERO
   ============================================ */
.hero-section {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  overflow: hidden;
  padding-top: var(--header-h);
}
.hero-bg {
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, var(--navy-900) 0%, var(--navy-700) 55%, var(--navy-800) 100%);
}
.hero-bg-img {
  position: absolute;
  inset: 0;
  width: 100%; height: 100%;
  object-fit: cover;
  opacity: 0.18;
}
.hero-overlay {
  position: absolute;
  inset: 0;
  background:
    linear-gradient(to right, rgba(8,13,26,0.85) 0%, rgba(8,13,26,0.4) 60%, transparent 100%),
    linear-gradient(to top, rgba(8,13,26,0.6) 0%, transparent 50%);
}
/* Grid pattern overlay */
.hero-section::before {
  content: '';
  position: absolute;
  inset: 0;
  z-index: 1;
  background-image:
    linear-gradient(rgba(37,99,235,0.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(37,99,235,0.05) 1px, transparent 1px);
  background-size: 60px 60px;
  pointer-events: none;
}
/* Glow effects */
.hero-section::after {
  content: '';
  position: absolute;
  width: 700px; height: 700px;
  background: radial-gradient(circle, rgba(37,99,235,0.18) 0%, transparent 70%);
  top: -150px; right: -150px;
  z-index: 1;
  pointer-events: none;
}
.hero-content {
  position: relative;
  z-index: 2;
  max-width: 780px;
  padding-top: 40px;
  padding-bottom: 80px;
}
.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(37,99,235,0.18);
  border: 1px solid rgba(37,99,235,0.38);
  color: var(--blue-200);
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.07em;
  text-transform: uppercase;
  padding: 8px 18px;
  border-radius: 100px;
  margin-bottom: 28px;
}
.hero-badge::before {
  content: '';
  width: 8px; height: 8px;
  background: var(--accent);
  border-radius: 50%;
  box-shadow: 0 0 10px var(--accent);
  animation: pulse 2.2s infinite;
  flex-shrink: 0;
}
@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.5; transform: scale(0.75); }
}
.hero-title {
  font-size: clamp(2.4rem, 5.5vw, 4rem);
  font-weight: 800;
  line-height: 1.15;
  margin-bottom: 24px;
  background: linear-gradient(135deg, var(--white) 0%, var(--blue-200) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.hero-desc {
  font-size: 1.08rem;
  color: var(--text-secondary);
  max-width: 620px;
  margin-bottom: 40px;
  line-height: 1.75;
}
.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-bottom: 64px;
}
.hero-stats {
  display: flex;
  gap: 48px;
  flex-wrap: wrap;
  padding-top: 32px;
  border-top: 1px solid rgba(255,255,255,0.08);
}
.stat-item {
  display: flex;
  flex-direction: column;
  gap: 4px;
}
.stat-num {
  font-size: 2.4rem;
  font-weight: 800;
  line-height: 1;
  background: linear-gradient(135deg, var(--blue-300), var(--accent-light));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.stat-label {
  font-size: 0.8rem;
  color: var(--text-muted);
  font-weight: 500;
}

/* ============================================
   OVERVIEW
   ============================================ */
.overview-section {
  background: linear-gradient(180deg, var(--navy-900) 0%, var(--navy-800) 100%);
}
.value-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 22px;
  margin-top: 16px;
}
.value-card {
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: var(--radius);
  padding: 28px;
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}
.value-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--blue-500), var(--accent));
  opacity: 0;
  transition: var(--transition);
}
.value-card:hover {
  background: var(--card-hover);
  border-color: rgba(37,99,235,0.28);
  transform: translateY(-4px);
  box-shadow: var(--shadow);
}
.value-card:hover::before { opacity: 1; }
.value-icon {
  width: 48px; height: 48px;
  background: rgba(37,99,235,0.12);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.4rem;
  margin-bottom: 16px;
}
.value-card h3 { margin-bottom: 10px; font-size: 1rem; }
.value-card p { font-size: 0.88rem; color: var(--text-muted); line-height: 1.65; }

/* ============================================
   CATEGORIES
   ============================================ */
.categories-section {
  background: var(--navy-800);
}
.cat-tabs {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  justify-content: center;
  margin-bottom: 40px;
}
.cat-tab {
  padding: 10px 22px;
  border-radius: 100px;
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--text-muted);
  background: rgba(255,255,255,0.04);
  border: 1px solid rgba(255,255,255,0.08);
  cursor: pointer;
  transition: var(--transition);
}
.cat-tab:hover {
  color: var(--white);
  background: rgba(255,255,255,0.08);
}
.cat-tab.active {
  background: var(--blue-600);
  border-color: var(--blue-500);
  color: var(--white);
  box-shadow: 0 0 20px rgba(37,99,235,0.3);
}
.cat-panel { display: none; }
.cat-panel.active { display: block; }

/* Category panel inner layout */
.cat-panel-inner {
  display: grid;
  grid-template-columns: 1fr 1.5fr;
  gap: 40px;
  align-items: start;
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: var(--radius-lg);
  padding: 32px;
  margin-bottom: 32px;
  overflow: hidden;
}
.cat-panel-img img {
  width: 100%;
  height: 300px;
  object-fit: cover;
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}
.cat-panel-content h3 { font-size: 1.5rem; margin-bottom: 12px; }
.cat-panel-content > p { color: var(--text-muted); line-height: 1.7; margin-bottom: 24px; }

/* Sub-categories accordion */
.sub-categories { display: flex; flex-direction: column; gap: 10px; }
.sub-cat-item { border-radius: var(--radius); overflow: hidden; }
.sub-cat-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 15px 20px;
  background: rgba(255,255,255,0.04);
  border: 1px solid rgba(255,255,255,0.07);
  border-radius: var(--radius);
  cursor: pointer;
  transition: var(--transition);
  user-select: none;
  gap: 12px;
}
.sub-cat-header:hover {
  background: rgba(255,255,255,0.07);
  border-color: rgba(37,99,235,0.28);
}
.sub-cat-header.open {
  background: rgba(37,99,235,0.1);
  border-color: rgba(37,99,235,0.35);
  border-bottom-left-radius: 0;
  border-bottom-right-radius: 0;
}
.sub-cat-header span:first-child {
  font-weight: 600;
  font-size: 0.9rem;
  color: var(--white);
  flex: 1;
}
.toggle-icon {
  width: 22px; height: 22px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
  color: var(--text-muted);
  transition: transform var(--transition);
  flex-shrink: 0;
  font-weight: 300;
}
.sub-cat-header.open .toggle-icon { transform: rotate(45deg); color: var(--blue-300); }
.sub-cat-body {
  display: none;
  padding: 18px 20px;
  background: rgba(37,99,235,0.05);
  border: 1px solid rgba(37,99,235,0.18);
  border-top: none;
  border-bottom-left-radius: var(--radius);
  border-bottom-right-radius: var(--radius);
}
.sub-cat-body.open { display: block; }
.sub-cat-body p {
  font-size: 0.88rem;
  color: var(--text-secondary);
  margin-bottom: 10px;
  line-height: 1.7;
}
.sub-cat-body .sub-cat-app {
  font-size: 0.82rem;
  color: var(--blue-300);
  background: rgba(37,99,235,0.08);
  border-left: 3px solid var(--blue-500);
  padding: 8px 14px;
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  margin-bottom: 0;
}

/* ============================================
   SCENARIOS
   ============================================ */
.scenarios-section {
  background: linear-gradient(180deg, var(--navy-800) 0%, var(--navy-900) 100%);
}
.scenarios-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}
.scenario-card {
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: var(--radius);
  overflow: hidden;
  cursor: pointer;
  transition: var(--transition);
}
.scenario-card:hover {
  border-color: rgba(37,99,235,0.35);
  transform: translateY(-4px);
  box-shadow: var(--shadow);
}
.scenario-card.expanded {
  border-color: var(--blue-500);
  box-shadow: 0 0 30px rgba(37,99,235,0.2);
}
.scenario-img-wrap {
  position: relative;
  overflow: hidden;
}
.scenario-img-wrap img {
  width: 100%;
  height: 200px;
  object-fit: cover;
  transition: transform 0.5s ease;
}
.scenario-card:hover .scenario-img-wrap img { transform: scale(1.06); }
.scenario-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(8,13,26,0.85) 0%, transparent 55%);
  display: flex;
  align-items: flex-end;
  padding: 16px;
}
.scenario-overlay h4 {
  color: var(--white);
  font-size: 0.95rem;
  line-height: 1.3;
}
.scenario-detail {
  padding: 16px 18px;
  display: none;
  border-top: 1px solid rgba(255,255,255,0.06);
}
.scenario-card.expanded .scenario-detail { display: block; }
.scenario-detail p {
  font-size: 0.85rem;
  color: var(--text-muted);
  line-height: 1.65;
  margin-bottom: 12px;
}
.scenario-tags { display: flex; flex-wrap: wrap; gap: 6px; }
.scenario-tags span {
  display: inline-flex;
  align-items: center;
  padding: 3px 10px;
  background: rgba(37,99,235,0.12);
  border: 1px solid rgba(37,99,235,0.22);
  color: var(--blue-300);
  font-size: 0.7rem;
  font-weight: 600;
  border-radius: 100px;
}

/* ============================================
   SOLUTIONS
   ============================================ */
.solutions-section {
  background: var(--navy-800);
}
.solutions-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.solution-card {
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: var(--radius);
  overflow: hidden;
  transition: var(--transition);
  display: flex;
  flex-direction: column;
  padding: 28px;
  position: relative;
}
.solution-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--blue-600), var(--accent));
  opacity: 0;
  transition: var(--transition);
}
.solution-card:hover {
  border-color: rgba(37,99,235,0.35);
  transform: translateY(-6px);
  box-shadow: var(--shadow);
  background: var(--card-hover);
}
.solution-card:hover::before { opacity: 1; }
.solution-num {
  font-size: 2.8rem;
  font-weight: 800;
  color: rgba(37,99,235,0.18);
  line-height: 1;
  margin-bottom: 12px;
  font-variant-numeric: tabular-nums;
}
.solution-icon {
  font-size: 2rem;
  margin-bottom: 14px;
}
.solution-card h4 {
  color: var(--white);
  margin-bottom: 10px;
  font-size: 0.97rem;
  line-height: 1.4;
}
.solution-card p {
  font-size: 0.85rem;
  color: var(--text-muted);
  line-height: 1.65;
  flex: 1;
  margin-bottom: 16px;
}
.solution-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-bottom: 16px;
}
.solution-tags span {
  display: inline-flex;
  align-items: center;
  padding: 3px 10px;
  background: rgba(37,99,235,0.1);
  border: 1px solid rgba(37,99,235,0.2);
  color: var(--blue-300);
  font-size: 0.7rem;
  font-weight: 600;
  border-radius: 100px;
}
.solution-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--blue-300);
  transition: var(--transition);
  margin-top: auto;
}
.solution-link:hover {
  color: var(--accent-light);
  gap: 10px;
}

/* ============================================
   SELECTION GUIDE
   ============================================ */
.selection-section {
  background: linear-gradient(180deg, var(--navy-900) 0%, var(--navy-800) 100%);
}
.selection-layout {
  display: grid;
  grid-template-columns: 1fr 1.5fr;
  gap: 48px;
  align-items: start;
}
.selection-img img {
  width: 100%;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  position: sticky;
  top: 100px;
}
.sel-accordion { display: flex; flex-direction: column; gap: 12px; }
.sel-item {
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: var(--radius);
  overflow: hidden;
}
.sel-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 18px 22px;
  cursor: pointer;
  transition: var(--transition);
  user-select: none;
  gap: 12px;
}
.sel-header:hover { background: var(--card-hover); }
.sel-header.open { background: rgba(37,99,235,0.1); }
.sel-header span:first-child {
  font-weight: 600;
  font-size: 0.93rem;
  color: var(--white);
  flex: 1;
}
.sel-icon {
  width: 22px; height: 22px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
  color: var(--text-muted);
  transition: transform var(--transition);
  flex-shrink: 0;
  font-weight: 300;
}
.sel-header.open .sel-icon { transform: rotate(45deg); color: var(--blue-300); }
.sel-body {
  display: none;
  padding: 0 22px 18px;
  border-top: 1px solid rgba(255,255,255,0.06);
}
.sel-body.open { display: block; }
.sel-body ul { margin-top: 14px; display: flex; flex-direction: column; gap: 10px; }
.sel-body li {
  font-size: 0.87rem;
  color: var(--text-secondary);
  padding-left: 18px;
  position: relative;
  line-height: 1.65;
}
.sel-body li::before {
  content: '▸';
  position: absolute;
  left: 0;
  color: var(--blue-400);
  font-size: 0.72rem;
  top: 3px;
}

/* ============================================
   INSIGHTS
   ============================================ */
.insights-section {
  background: var(--navy-800);
}
.insights-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
}
.insight-card {
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: var(--radius);
  padding: 24px 28px;
  transition: var(--transition);
}
.insight-card:hover {
  background: var(--card-hover);
  border-color: rgba(37,99,235,0.28);
}
.insight-num {
  font-size: 2.8rem;
  font-weight: 800;
  color: rgba(37,99,235,0.18);
  line-height: 1;
  margin-bottom: 12px;
}
.insight-card p {
  font-size: 0.88rem;
  color: var(--text-secondary);
  line-height: 1.72;
}

/* ============================================
   CTA
   ============================================ */
.cta-section {
  background: linear-gradient(135deg, var(--navy-700) 0%, var(--navy-600) 50%, var(--navy-700) 100%);
  position: relative;
  overflow: hidden;
  padding: 96px 0;
}
.cta-section::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(37,99,235,0.07) 1px, transparent 1px),
    linear-gradient(90deg, rgba(37,99,235,0.07) 1px, transparent 1px);
  background-size: 40px 40px;
}
.cta-inner {
  position: relative;
  z-index: 1;
  text-align: center;
  max-width: 660px;
  margin: 0 auto;
}
.cta-inner h2 { margin-bottom: 16px; }
.cta-inner p { margin-bottom: 40px; font-size: 1.05rem; color: var(--text-muted); }
.cta-actions {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
}

/* ============================================
   FOOTER
   ============================================ */
.site-footer {
  background: var(--navy-900);
  border-top: 1px solid rgba(255,255,255,0.05);
  padding: 64px 0 32px;
}
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1.2fr 1.5fr;
  gap: 48px;
  margin-bottom: 48px;
}
.footer-brand {
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.footer-logo {
  height: 36px;
  width: auto;
}
.footer-url {
  font-size: 0.8rem;
  color: var(--blue-300);
  letter-spacing: 0.04em;
  transition: color var(--transition);
}
.footer-url:hover { color: var(--accent-light); }
.footer-brand p {
  font-size: 0.86rem;
  color: var(--text-muted);
  line-height: 1.7;
  max-width: 280px;
}
.footer-links h5, .footer-solutions h5, .footer-contact h5 {
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: 18px;
}
.footer-links ul, .footer-solutions ul {
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.footer-links li a, .footer-solutions li a {
  font-size: 0.86rem;
  color: var(--text-muted);
  transition: color var(--transition);
}
.footer-links li a:hover, .footer-solutions li a:hover { color: var(--blue-300); }
.footer-contact {
  display: flex;
  flex-direction: column;
}
.contact-item {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  margin-bottom: 14px;
}
.contact-icon { font-size: 1rem; flex-shrink: 0; margin-top: 1px; }
.contact-item a, .contact-item span {
  font-size: 0.86rem;
  color: var(--text-muted);
  line-height: 1.5;
  transition: color var(--transition);
}
.contact-item a:hover { color: var(--blue-300); }
.footer-cta-btns {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  margin-top: 8px;
}
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.05);
  padding-top: 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
}
.footer-bottom p {
  font-size: 0.8rem;
  color: var(--text-muted);
}

/* ============================================
   BACK TO TOP
   ============================================ */
#back-to-top {
  position: fixed;
  bottom: 32px; right: 32px;
  width: 44px; height: 44px;
  background: var(--blue-600);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  opacity: 0;
  pointer-events: none;
  transition: var(--transition);
  z-index: 999;
  box-shadow: 0 4px 16px rgba(37,99,235,0.4);
}
#back-to-top.visible { opacity: 1; pointer-events: auto; }
#back-to-top:hover { background: var(--blue-500); transform: translateY(-3px); }
#back-to-top svg { width: 18px; height: 18px; color: white; }

/* ============================================
   ANIMATIONS
   ============================================ */
.animate-in {
  animation: fadeUp 0.5s ease forwards;
}
@keyframes fadeUp {
  from { opacity: 0; transform: translateY(20px); }
  to { opacity: 1; transform: translateY(0); }
}

/* ============================================
   RESPONSIVE
   ============================================ */
@media (max-width: 1100px) {
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 36px; }
  .value-grid { grid-template-columns: repeat(2, 1fr); }
  .solutions-grid { grid-template-columns: repeat(2, 1fr); }
  .cat-panel-inner { grid-template-columns: 1fr; }
  .cat-panel-img img { height: 220px; }
  .selection-layout { grid-template-columns: 1fr; }
  .selection-img { display: none; }
}

@media (max-width: 768px) {
  .section { padding: 64px 0; }
  .cta-section { padding: 64px 0; }
  .main-nav {
    display: none;
    position: fixed;
    top: 70px; left: 0; right: 0;
    background: rgba(8,13,26,0.98);
    backdrop-filter: blur(24px);
    flex-direction: column;
    padding: 16px;
    gap: 4px;
    border-bottom: 1px solid rgba(255,255,255,0.07);
    z-index: 999;
  }
  .main-nav.open { display: flex; }
  .main-nav ul { flex-direction: column; width: 100%; }
  .main-nav a { width: 100%; text-align: center; padding: 12px; }
  .mobile-menu-btn { display: flex; }
  .header-controls .btn { display: none; }
  .scenarios-grid { grid-template-columns: repeat(2, 1fr); }
  .solutions-grid { grid-template-columns: 1fr; }
  .insights-grid { grid-template-columns: 1fr; }
  .hero-stats { gap: 28px; }
  .footer-grid { grid-template-columns: 1fr; gap: 32px; }
  .footer-cta-btns { flex-direction: column; }
}

@media (max-width: 480px) {
  .scenarios-grid { grid-template-columns: 1fr; }
  .value-grid { grid-template-columns: 1fr; }
  .hero-actions { flex-direction: column; align-items: flex-start; }
  .cta-actions { flex-direction: column; align-items: center; }
  .cat-tabs { flex-direction: column; }
  .cat-tab { text-align: center; }
  .hero-stats { gap: 20px; }
}

/* ===== SAFETY & RISK SECTION ===== */
.safety-section { background: var(--navy-800); }

.safety-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-bottom: 48px;
}

.safety-card {
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: var(--radius);
  padding: 28px 24px;
  transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
  position: relative;
  overflow: hidden;
}

.safety-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--blue-500), var(--accent));
  opacity: 0;
  transition: opacity var(--transition);
}

.safety-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow);
  border-color: rgba(37,99,235,0.3);
}

.safety-card:hover::before { opacity: 1; }

.safety-icon { font-size: 2rem; margin-bottom: 16px; display: block; }

.safety-card h3 {
  font-size: 1rem;
  font-weight: 600;
  color: var(--white);
  margin-bottom: 12px;
  line-height: 1.4;
}

.safety-card p {
  font-size: 0.875rem;
  color: var(--text-secondary);
  line-height: 1.6;
  margin-bottom: 16px;
}

.safety-tags { display: flex; flex-wrap: wrap; gap: 8px; }

.stag {
  background: rgba(37,99,235,0.15);
  color: var(--blue-300);
  border: 1px solid rgba(37,99,235,0.3);
  border-radius: 4px;
  padding: 3px 10px;
  font-size: 0.72rem;
  font-weight: 600;
  font-family: 'Courier New', monospace;
  letter-spacing: 0.03em;
}

/* Compliance Table */
.safety-table-wrap { margin-bottom: 48px; }

.subsection-title {
  font-size: 1.2rem;
  font-weight: 600;
  color: var(--white);
  margin-bottom: 20px;
  padding-left: 16px;
  border-left: 3px solid var(--blue-500);
}

.table-responsive {
  overflow-x: auto;
  border-radius: var(--radius);
  border: 1px solid var(--card-border);
}

.compliance-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.875rem;
}

.compliance-table thead {
  background: rgba(37,99,235,0.1);
}

.compliance-table th {
  padding: 14px 16px;
  text-align: left;
  font-weight: 600;
  color: var(--blue-300);
  border-bottom: 1px solid var(--card-border);
  white-space: nowrap;
}

.compliance-table td {
  padding: 12px 16px;
  color: var(--text-secondary);
  border-bottom: 1px solid rgba(255,255,255,0.04);
  vertical-align: top;
}

.compliance-table tbody tr:hover { background: rgba(37,99,235,0.05); }
.compliance-table tbody tr:last-child td { border-bottom: none; }

/* Risk Tips */
.tips-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
}

.tip-item {
  display: flex;
  gap: 16px;
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: var(--radius);
  padding: 20px;
  transition: border-color var(--transition);
}

.tip-item:hover { border-color: rgba(37,99,235,0.3); }

.tip-icon {
  width: 40px; height: 40px;
  min-width: 40px;
  background: linear-gradient(135deg, var(--blue-500), var(--accent));
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.875rem;
  font-weight: 700;
  color: white;
}

.tip-content h4 {
  font-size: 0.9375rem;
  font-weight: 600;
  color: var(--white);
  margin-bottom: 6px;
}

.tip-content p {
  font-size: 0.8125rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

/* ===== ECOSYSTEM SECTION ===== */
.ecosystem-section { background: var(--navy-900); }

.eco-tab-nav {
  display: flex;
  gap: 4px;
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: var(--radius);
  padding: 6px;
  margin-bottom: 32px;
  flex-wrap: wrap;
}

.eco-tab-btn {
  flex: 1;
  min-width: 140px;
  padding: 12px 20px;
  background: transparent;
  border: none;
  border-radius: var(--radius-sm);
  color: var(--text-secondary);
  font-size: 0.875rem;
  font-weight: 500;
  cursor: pointer;
  transition: all var(--transition);
  white-space: nowrap;
}

.eco-tab-btn:hover {
  color: var(--white);
  background: rgba(255,255,255,0.05);
}

.eco-tab-btn.active {
  background: linear-gradient(135deg, var(--blue-500), var(--blue-600));
  color: white;
  box-shadow: 0 4px 12px rgba(37,99,235,0.3);
}

.eco-panel { display: none; }
.eco-panel.active { display: block; }

.eco-cards {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}

.eco-card {
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: var(--radius);
  padding: 24px 20px;
  transition: transform var(--transition), border-color var(--transition), box-shadow var(--transition);
}

.eco-card:hover {
  transform: translateY(-4px);
  border-color: rgba(37,99,235,0.3);
  box-shadow: var(--shadow);
}

.eco-card-icon { font-size: 1.75rem; margin-bottom: 14px; display: block; }

.eco-card h4 {
  font-size: 0.9375rem;
  font-weight: 600;
  color: var(--white);
  margin-bottom: 10px;
  line-height: 1.4;
}

.eco-card p {
  font-size: 0.8125rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

/* ===== CALCULATORS SECTION ===== */
.calculators-section { background: var(--navy-800); }

.calc-tab-nav {
  display: flex;
  gap: 4px;
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: var(--radius);
  padding: 6px;
  margin-bottom: 32px;
  flex-wrap: wrap;
}

.calc-tab-btn {
  flex: 1;
  min-width: 160px;
  padding: 12px 20px;
  background: transparent;
  border: none;
  border-radius: var(--radius-sm);
  color: var(--text-secondary);
  font-size: 0.875rem;
  font-weight: 500;
  cursor: pointer;
  transition: all var(--transition);
  white-space: nowrap;
}

.calc-tab-btn:hover {
  color: var(--white);
  background: rgba(255,255,255,0.05);
}

.calc-tab-btn.active {
  background: linear-gradient(135deg, var(--blue-500), var(--blue-600));
  color: white;
  box-shadow: 0 4px 12px rgba(37,99,235,0.3);
}

.calc-panel { display: none; }
.calc-panel.active { display: block; }

.calc-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 32px;
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: var(--radius-lg);
  padding: 36px;
}

.calc-inputs h3 {
  font-size: 1.125rem;
  font-weight: 600;
  color: var(--white);
  margin-bottom: 8px;
}

.calc-desc-text {
  font-size: 0.875rem;
  color: var(--text-muted);
  margin-bottom: 24px;
  line-height: 1.6;
}

.form-group { margin-bottom: 18px; }

.form-group label {
  display: block;
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--text-secondary);
  margin-bottom: 6px;
}

.form-group input,
.form-group select {
  width: 100%;
  padding: 10px 14px;
  background: rgba(255,255,255,0.04);
  border: 1px solid var(--card-border);
  border-radius: var(--radius-sm);
  color: var(--text-primary);
  font-size: 0.875rem;
  transition: border-color var(--transition), box-shadow var(--transition);
  box-sizing: border-box;
  font-family: inherit;
}

.form-group input:focus,
.form-group select:focus {
  outline: none;
  border-color: var(--blue-400);
  box-shadow: 0 0 0 3px rgba(37,99,235,0.15);
}

.form-group select option { background: var(--navy-800); color: var(--white); }

.calc-btn {
  width: 100%;
  margin-top: 8px;
  padding: 12px 24px;
  font-size: 0.9375rem;
}

.calc-results {
  background: rgba(255,255,255,0.02);
  border: 1px solid var(--card-border);
  border-radius: var(--radius);
  padding: 24px;
  min-height: 300px;
}

.calc-results h4 {
  font-size: 1rem;
  font-weight: 600;
  color: var(--accent-light);
  margin-bottom: 16px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--card-border);
}

.result-placeholder {
  color: var(--text-muted);
  font-size: 0.875rem;
  text-align: center;
  padding: 40px 20px;
  line-height: 1.6;
}

.result-item {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  padding: 12px 0;
  border-bottom: 1px solid rgba(255,255,255,0.04);
  gap: 12px;
}

.result-item:last-child { border-bottom: none; }

.result-label {
  font-size: 0.8125rem;
  color: var(--text-secondary);
  flex: 1;
}

.result-value {
  font-size: 0.9375rem;
  font-weight: 700;
  color: var(--accent-light);
  text-align: right;
}

.result-note {
  font-size: 0.75rem;
  color: var(--text-muted);
  margin-top: 4px;
  line-height: 1.5;
}

.result-warning {
  background: rgba(245,158,11,0.1);
  border: 1px solid rgba(245,158,11,0.3);
  border-radius: var(--radius-sm);
  padding: 12px 16px;
  margin-top: 16px;
  font-size: 0.8125rem;
  color: #f59e0b;
  line-height: 1.5;
}

.result-recommendation {
  background: rgba(37,99,235,0.1);
  border: 1px solid rgba(37,99,235,0.3);
  border-radius: var(--radius-sm);
  padding: 12px 16px;
  margin-top: 12px;
  font-size: 0.8125rem;
  color: var(--blue-300);
  line-height: 1.5;
}

/* ===== RESPONSIVE ADDITIONS FOR NEW SECTIONS ===== */
@media (max-width: 1024px) {
  .safety-grid { grid-template-columns: repeat(2, 1fr); }
  .eco-cards { grid-template-columns: repeat(2, 1fr); }
  .calc-layout { grid-template-columns: 1fr; }
}

@media (max-width: 768px) {
  .safety-grid { grid-template-columns: 1fr; }
  .tips-grid { grid-template-columns: 1fr; }
  .eco-tab-nav { flex-direction: column; }
  .eco-tab-btn { min-width: auto; text-align: center; }
  .eco-cards { grid-template-columns: 1fr; }
  .calc-tab-nav { flex-direction: column; }
  .calc-tab-btn { min-width: auto; text-align: center; }
  .calc-layout { padding: 20px; gap: 20px; }
}

/* ===== CALCULATOR PANEL FOOTER LINK ===== */
.calc-panel-footer {
  display: flex;
  justify-content: flex-end;
  padding: 12px 24px 20px;
  border-top: 1px solid rgba(255,255,255,0.06);
  margin-top: 4px;
}
.calc-open-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--accent);
  text-decoration: none;
  padding: 8px 16px;
  border: 1px solid var(--accent);
  border-radius: 6px;
  transition: background 0.2s, color 0.2s;
}
.calc-open-link:hover {
  background: var(--accent);
  color: #fff;
}