/* ==========================================================================
   TECHNO SYSTEM INDUSTRIAL AUTOMATION - DESIGN SYSTEM & STYLES (styles.css)
   Design Blueprint: Industrial Kinetic
   ========================================================================== */

/* --- Custom Properties & Tokens --- */
:root {
  /* Color Palette */
  --color-industrial-black: #0F172A;
  --color-slate-gray: #1E293B;
  --color-safety-orange: #F97316;
  --color-safety-orange-hover: #EA580C;
  --color-caution-yellow: #FACC15;
  --color-surface-white: #FFFFFF;
  --color-surface-dim: #F8FAFC;
  --color-surface-container: #F1F5F9;
  --color-surface-container-high: #E2E8F0;
  --color-border-subtle: rgba(30, 41, 59, 0.12);
  --color-border-orange: rgba(249, 115, 22, 0.4);
  --color-text-main: #0F172A;
  --color-text-muted: #475569;
  --color-text-light: #94A3B8;
  --color-success: #22C55E;
  --color-error: #EF4444;

  /* Fonts */
  --font-heading: 'Outfit', sans-serif;
  --font-body: 'Inter', sans-serif;
  --font-mono: 'JetBrains Mono', monospace;

  /* Radii */
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-full: 9999px;

  /* Shadows & Elev */
  --shadow-sm: 0 1px 3px rgba(15, 23, 42, 0.08);
  --shadow-md: 0 4px 12px rgba(15, 23, 42, 0.1);
  --shadow-lg: 0 12px 28px rgba(15, 23, 42, 0.15);
  --shadow-orange: 0 4px 20px rgba(249, 115, 22, 0.25);

  /* Spacing */
  --max-width: 1280px;
  --header-height: 72px;
  --transition-fast: 0.2s ease;
  --transition-normal: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

html {
  scroll-behavior: smooth;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
}

body {
  font-family: var(--font-body);
  background-color: var(--color-surface-white);
  color: var(--color-text-main);
  line-height: 1.6;
  overflow-x: hidden;
  min-height: 100vh;
}

/* --- Typography --- */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  color: var(--color-industrial-black);
  line-height: 1.2;
  font-weight: 700;
}

.text-headline-xl {
  font-size: clamp(2.25rem, 5vw, 3.25rem);
  letter-spacing: -0.02em;
}

.text-headline-lg {
  font-size: clamp(1.75rem, 3.5vw, 2.25rem);
  letter-spacing: -0.01em;
}

.text-headline-md {
  font-size: clamp(1.25rem, 2.5vw, 1.5rem);
}

.text-body-lg {
  font-size: 1.125rem;
  line-height: 1.7;
}

.text-body-md {
  font-size: 1rem;
}

.text-label-mono {
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  font-weight: 600;
}

.text-orange {
  color: var(--color-safety-orange);
}

.text-yellow {
  color: var(--color-caution-yellow);
}

/* --- Technical Background Grid Pattern --- */
.industrial-grid-bg {
  position: absolute;
  inset: 0;
  background-image: radial-gradient(circle, var(--color-slate-gray) 1px, transparent 1px);
  background-size: 28px 28px;
  opacity: 0.05;
  pointer-events: none;
}

/* --- Header / Navigation --- */
.header-sticky {
  position: sticky;
  top: 0;
  z-index: 100;
  height: var(--header-height);
  background-color: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--color-border-subtle);
  transition: var(--transition-normal);
}

.header-scrolled {
  box-shadow: var(--shadow-sm);
  background-color: rgba(255, 255, 255, 0.98);
}

.header-container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 1.5rem;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.brand-logo {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  text-decoration: none;
}

.brand-logo img {
  height: 38px;
  width: auto;
  object-fit: contain;
}

.brand-text {
  font-family: var(--font-heading);
  font-weight: 800;
  font-size: 1.25rem;
  color: var(--color-industrial-black);
  letter-spacing: -0.02em;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 2rem;
  list-style: none;
}

.nav-link {
  text-decoration: none;
  font-family: var(--font-heading);
  font-weight: 600;
  font-size: 0.95rem;
  color: var(--color-slate-gray);
  transition: var(--transition-fast);
  position: relative;
  padding: 0.5rem 0;
}

.nav-link:hover, .nav-link.active {
  color: var(--color-safety-orange);
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background-color: var(--color-safety-orange);
  transition: var(--transition-normal);
}

.nav-link:hover::after, .nav-link.active::after {
  width: 100%;
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.btn-header-call {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.6rem 1.25rem;
  background-color: var(--color-industrial-black);
  color: var(--color-surface-white);
  font-family: var(--font-mono);
  font-size: 0.85rem;
  font-weight: 600;
  border-radius: var(--radius-sm);
  text-decoration: none;
  transition: var(--transition-fast);
  border: 1px solid transparent;
}

.btn-header-call:hover {
  background-color: var(--color-safety-orange);
  box-shadow: var(--shadow-orange);
}

.menu-toggle {
  display: none;
  background: none;
  border: none;
  color: var(--color-safety-orange);
  font-size: 1.75rem;
  cursor: pointer;
  padding: 0.25rem;
}

/* Mobile Drawer Overlay */
.drawer-overlay {
  position: fixed;
  inset: 0;
  background: rgba(15, 23, 42, 0.6);
  backdrop-filter: blur(4px);
  z-index: 200;
  opacity: 0;
  visibility: hidden;
  transition: var(--transition-normal);
}

.drawer-overlay.active {
  opacity: 1;
  visibility: visible;
}

.drawer-content {
  position: fixed;
  top: 0;
  left: 0;
  bottom: 0;
  width: 280px;
  background: var(--color-surface-white);
  z-index: 201;
  transform: translateX(-100%);
  transition: var(--transition-normal);
  padding: 1.5rem;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  box-shadow: var(--shadow-lg);
}

.drawer-overlay.active .drawer-content {
  transform: translateX(0);
}

.drawer-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-bottom: 1rem;
  border-bottom: 1px solid var(--color-border-subtle);
  margin-bottom: 1.5rem;
}

.drawer-close {
  background: none;
  border: none;
  font-size: 1.5rem;
  color: var(--color-slate-gray);
  cursor: pointer;
}

.drawer-nav {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.drawer-link {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.75rem 1rem;
  text-decoration: none;
  font-family: var(--font-heading);
  font-weight: 600;
  color: var(--color-slate-gray);
  border-radius: var(--radius-sm);
  transition: var(--transition-fast);
}

.drawer-link:hover, .drawer-link.active {
  background: var(--color-surface-container);
  color: var(--color-safety-orange);
}

/* --- Buttons & Inputs --- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.85rem 1.75rem;
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 0.95rem;
  border-radius: var(--radius-sm);
  text-decoration: none;
  cursor: pointer;
  transition: var(--transition-normal);
  border: 2px solid transparent;
  outline: none;
}

.btn-primary {
  background-color: var(--color-safety-orange);
  color: var(--color-surface-white);
  box-shadow: var(--shadow-sm);
}

.btn-primary:hover {
  background-color: var(--color-safety-orange-hover);
  box-shadow: var(--shadow-orange);
  transform: translateY(-2px);
}

.btn-secondary {
  border-color: var(--color-safety-orange);
  color: var(--color-industrial-black);
  background: transparent;
}

.btn-secondary:hover {
  background-color: var(--color-safety-orange);
  color: var(--color-surface-white);
  transform: translateY(-2px);
}

.btn-dark {
  background-color: var(--color-industrial-black);
  color: var(--color-surface-white);
}

.btn-dark:hover {
  background-color: var(--color-safety-orange);
  box-shadow: var(--shadow-orange);
  transform: translateY(-2px);
}

/* Form inputs */
.form-group {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  margin-bottom: 1.25rem;
}

.form-label {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  text-transform: uppercase;
  color: var(--color-slate-gray);
  letter-spacing: 0.05em;
  font-weight: 600;
}

.form-input, .form-select, .form-textarea {
  width: 100%;
  padding: 0.85rem 1rem;
  font-family: var(--font-body);
  font-size: 0.95rem;
  color: var(--color-text-main);
  background-color: var(--color-surface-white);
  border: 1px solid var(--color-border-subtle);
  border-radius: var(--radius-sm);
  transition: var(--transition-fast);
}

.form-input:focus, .form-select:focus, .form-textarea:focus {
  outline: none;
  border-color: var(--color-safety-orange);
  box-shadow: 0 0 0 3px rgba(249, 115, 22, 0.15);
}

/* --- Component Cards & Accent Headers --- */
.card-industrial {
  background-color: var(--color-surface-white);
  border: 1px solid var(--color-border-subtle);
  border-radius: var(--radius-sm);
  position: relative;
  overflow: hidden;
  transition: var(--transition-normal);
}

.card-industrial:hover {
  border-color: var(--color-border-orange);
  box-shadow: var(--shadow-md);
  transform: translateY(-4px);
}

.card-accent-top::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background-color: var(--color-safety-orange);
}

.status-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.35rem 0.85rem;
  background: var(--color-industrial-black);
  color: var(--color-surface-white);
  border-radius: var(--radius-sm);
  font-family: var(--font-mono);
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.status-pulse {
  width: 8px;
  height: 8px;
  background-color: var(--color-safety-orange);
  border-radius: 50%;
  box-shadow: 0 0 8px var(--color-safety-orange);
  animation: pulse-glow 1.8s infinite;
}

@keyframes pulse-glow {
  0% { transform: scale(0.95); opacity: 0.8; }
  50% { transform: scale(1.25); opacity: 1; }
  100% { transform: scale(0.95); opacity: 0.8; }
}

/* --- Hero Section --- */
.hero-section {
  position: relative;
  padding: 5rem 1.5rem 6rem;
  overflow: hidden;
  background: linear-gradient(180deg, var(--color-surface-dim) 0%, var(--color-surface-white) 100%);
}

.hero-container {
  max-width: var(--max-width);
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3.5rem;
  align-items: center;
}

.hero-content {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
}

.hero-title {
  margin-top: 1rem;
  margin-bottom: 1.25rem;
}

.hero-subtitle {
  color: var(--color-text-muted);
  margin-bottom: 2rem;
  max-width: 520px;
}

.hero-actions {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
  width: 100%;
}

.hero-image-wrapper {
  position: relative;
  border-radius: var(--radius-md);
  overflow: hidden;
  border: 1px solid var(--color-border-subtle);
  box-shadow: var(--shadow-lg);
}

.hero-image-wrapper img {
  width: 100%;
  height: 420px;
  object-fit: cover;
  display: block;
}

.hero-overlay-badge {
  position: absolute;
  bottom: 1rem;
  left: 1rem;
  display: flex;
  gap: 0.5rem;
}

.badge-tag {
  background: rgba(255, 255, 255, 0.9);
  backdrop-filter: blur(4px);
  padding: 0.25rem 0.6rem;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  font-weight: 600;
  border-radius: 2px;
  color: var(--color-industrial-black);
}

/* --- Section Container --- */
.section-padding {
  padding: 5rem 1.5rem;
}

.section-header {
  text-align: center;
  max-width: 680px;
  margin: 0 auto 3.5rem;
}

.section-subtitle {
  color: var(--color-safety-orange);
  margin-bottom: 0.5rem;
}

/* --- Bento Grid / Core Capabilities --- */
.bento-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
  max-width: var(--max-width);
  margin: 0 auto;
}

.bento-card {
  padding: 2rem;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.bento-icon-box {
  width: 52px;
  height: 52px;
  border-radius: var(--radius-sm);
  background-color: rgba(249, 115, 22, 0.1);
  color: var(--color-safety-orange);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1.25rem;
}

.bento-card-dark {
  background-color: var(--color-industrial-black);
  color: var(--color-surface-white);
  border: 1px solid rgba(255, 255, 255, 0.1);
}

.bento-card-dark h3 {
  color: var(--color-surface-white);
}

.bento-card-dark p {
  color: var(--color-text-light);
}

.bento-card-footer {
  margin-top: 1.75rem;
  padding-top: 1rem;
  border-top: 1px solid var(--color-border-subtle);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

/* --- Brand Grid --- */
.brand-section {
  background-color: var(--color-surface-dim);
}

.brand-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
  gap: 1.25rem;
  max-width: var(--max-width);
  margin: 0 auto;
}

.brand-card {
  background: var(--color-surface-white);
  border: 1px solid var(--color-border-subtle);
  border-radius: var(--radius-sm);
  height: 100px;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1rem;
  transition: var(--transition-fast);
}

.brand-card:hover {
  border-color: var(--color-safety-orange);
  box-shadow: var(--shadow-sm);
}

.brand-card img {
  max-height: 48px;
  max-width: 130px;
  object-fit: contain;
  filter: grayscale(100%);
  opacity: 0.75;
  transition: var(--transition-fast);
}

.brand-card:hover img {
  filter: grayscale(0%);
  opacity: 1;
}

/* --- Stats Counter Section --- */
.stats-banner {
  background-color: var(--color-industrial-black);
  color: var(--color-surface-white);
  padding: 4rem 1.5rem;
  position: relative;
  overflow: hidden;
}

.stats-grid {
  max-width: var(--max-width);
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 2rem;
  text-align: center;
}

.stat-number {
  font-family: var(--font-heading);
  font-size: 3rem;
  font-weight: 800;
  color: var(--color-safety-orange);
  line-height: 1;
  margin-bottom: 0.5rem;
}

.stat-label {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: var(--color-text-light);
  text-transform: uppercase;
}

/* --- Product Filter Tabs & Grid --- */
.filter-bar {
  display: flex;
  justify-content: center;
  gap: 0.75rem;
  flex-wrap: wrap;
  margin-bottom: 2.5rem;
}

.filter-btn {
  padding: 0.6rem 1.25rem;
  font-family: var(--font-mono);
  font-size: 0.85rem;
  font-weight: 600;
  background: var(--color-surface-container);
  color: var(--color-slate-gray);
  border: 1px solid transparent;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: var(--transition-fast);
}

.filter-btn:hover, .filter-btn.active {
  background: var(--color-safety-orange);
  color: var(--color-surface-white);
}

.product-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 2rem;
  max-width: var(--max-width);
  margin: 0 auto;
}

.product-card {
  display: flex;
  flex-direction: column;
}

.product-image {
  width: 100%;
  height: 220px;
  object-fit: cover;
}

.product-body {
  padding: 1.5rem;
  display: flex;
  flex-direction: column;
  flex-grow: 1;
}

.product-title {
  font-size: 1.25rem;
  margin-bottom: 0.5rem;
  min-height: 2.8rem;
}

.product-desc {
  color: var(--color-text-muted);
  font-size: 0.925rem;
  margin-bottom: 1.25rem;
  flex-grow: 1;
}

.product-footer {
  margin-top: auto;
}

/* --- Modal Dialog --- */
.modal-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(15, 23, 42, 0.75);
  backdrop-filter: blur(4px);
  z-index: 300;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1.5rem;
  opacity: 0;
  visibility: hidden;
  transition: var(--transition-normal);
}

.modal-backdrop.active {
  opacity: 1;
  visibility: visible;
}

.modal-container {
  background: var(--color-surface-white);
  width: 100%;
  max-width: 540px;
  border-radius: var(--radius-md);
  border-top: 4px solid var(--color-safety-orange);
  box-shadow: var(--shadow-lg);
  padding: 2rem;
  position: relative;
  transform: translateY(20px);
  transition: var(--transition-normal);
}

.modal-backdrop.active .modal-container {
  transform: translateY(0);
}

.modal-close {
  position: absolute;
  top: 1.25rem;
  right: 1.25rem;
  background: none;
  border: none;
  font-size: 1.5rem;
  color: var(--color-slate-gray);
  cursor: pointer;
}

/* --- Toast Notification --- */
.toast-notification {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  background: var(--color-industrial-black);
  color: var(--color-surface-white);
  padding: 1rem 1.5rem;
  border-left: 4px solid var(--color-safety-orange);
  border-radius: var(--radius-sm);
  box-shadow: var(--shadow-lg);
  z-index: 400;
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-family: var(--font-mono);
  font-size: 0.875rem;
  transform: translateY(100px);
  opacity: 0;
  transition: var(--transition-normal);
}

.toast-notification.show {
  transform: translateY(0);
  opacity: 1;
}

/* --- Footer --- */
.footer-main {
  background-color: var(--color-industrial-black);
  color: var(--color-surface-white);
  border-top: 4px solid var(--color-safety-orange);
  padding-top: 4rem;
  padding-bottom: 2rem;
}

.footer-container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 1.5rem;
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1.5fr;
  gap: 3rem;
  margin-bottom: 3rem;
}

.footer-info p {
  color: var(--color-text-light);
  font-size: 0.9rem;
  margin-top: 1rem;
  line-height: 1.6;
}

.footer-heading {
  color: var(--color-surface-white);
  font-family: var(--font-mono);
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: 1.25rem;
}

.footer-links {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.footer-link {
  color: var(--color-text-light);
  text-decoration: none;
  font-size: 0.9rem;
  transition: var(--transition-fast);
}

.footer-link:hover {
  color: var(--color-safety-orange);
}

.cert-list {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.cert-item {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  color: var(--color-text-light);
  font-size: 0.875rem;
}

.cert-item span {
  color: var(--color-safety-orange);
}

.footer-bottom {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 1.5rem 1.5rem 0;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  display: flex;
  justify-content: space-between;
  align-items: center;
  color: var(--color-text-light);
  font-size: 0.85rem;
  font-family: var(--font-mono);
}

/* --- Floating Action Buttons --- */
.floating-actions {
  position: fixed;
  bottom: 2rem;
  right: 1.5rem;
  z-index: 90;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.btn-float {
  width: 52px;
  height: 52px;
  border-radius: 50%;
  background-color: var(--color-safety-orange);
  color: var(--color-surface-white);
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--shadow-lg);
  border: none;
  cursor: pointer;
  transition: var(--transition-normal);
  text-decoration: none;
}

.btn-float:hover {
  transform: scale(1.1);
  background-color: var(--color-safety-orange-hover);
}

/* --- Responsive Media Queries --- */
@media (max-width: 992px) {
  .hero-container {
    grid-template-columns: 1fr;
  }
  .bento-grid {
    grid-template-columns: 1fr;
  }
  .stats-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .footer-container {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 768px) {
  .nav-links {
    display: none;
  }
  .menu-toggle {
    display: block;
  }
  .footer-container {
    grid-template-columns: 1fr;
  }
  .footer-bottom {
    flex-direction: column;
    gap: 1rem;
    text-align: center;
  }
}