/* ==========================================================================
   VIDEO ANALYTICS NETWORK — assets/css/style.css
   Sleek B2B Enterprise Light Theme Design System
   ========================================================================== */

/* 1. DESIGN SYSTEM & VARIABLES */
:root {
  /* Fonts */
  --font-title: 'Plus Jakarta Sans', sans-serif;
  --font-body: 'Inter', sans-serif;

  /* Color Palette */
  --bg-primary: #f8fafc;
  --bg-secondary: #ffffff;
  --text-main: #0f172a;
  --text-muted: #64748b;
  
  --color-primary: #2563eb;       /* Royal Blue */
  --color-primary-hover: #1d4ed8;
  --color-secondary: #4f46e5;     /* Indigo */
  --color-accent: #0ea5e9;        /* Cyan */
  --color-accent-light: #e0f2fe;
  
  --border-light: rgba(226, 232, 240, 0.8);
  --border-glass: rgba(255, 255, 255, 0.6);
  --bg-glass: rgba(255, 255, 255, 0.75);
  --bg-glass-heavy: rgba(255, 255, 255, 0.9);
  
  /* Shadows */
  --shadow-sm: 0 2px 8px rgba(15, 23, 42, 0.03);
  --shadow-md: 0 10px 30px -10px rgba(37, 99, 235, 0.08);
  --shadow-lg: 0 20px 40px -15px rgba(15, 23, 42, 0.08);
  --shadow-hover: 0 20px 40px -10px rgba(37, 99, 235, 0.15);

  /* Border Radii */
  --radius-lg: 16px;
  --radius-md: 10px;
  --radius-sm: 6px;
  
  /* Transitions */
  --transition-smooth: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* 2. BASE RESET & LAYOUT */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  background-color: var(--bg-primary);
  color: var(--text-main);
  font-family: var(--font-body);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  position: relative;
  overflow-x: hidden;
}

.van-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
  width: 100%;
}

a {
  color: inherit;
  text-decoration: none;
  transition: var(--transition-smooth);
}

/* Glow Blobs for Visual Depth */
.glow-blob {
  position: absolute;
  width: 500px;
  height: 500px;
  border-radius: 50%;
  filter: blur(120px);
  opacity: 0.12;
  pointer-events: none;
  z-index: -1;
}

.glow-blob-1 {
  background: radial-gradient(circle, var(--color-primary) 0%, var(--color-secondary) 100%);
  top: -100px;
  left: -150px;
}

.glow-blob-2 {
  background: radial-gradient(circle, var(--color-accent) 0%, var(--color-primary) 100%);
  bottom: 20%;
  right: -200px;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-title);
  font-weight: 700;
  color: var(--text-main);
  line-height: 1.25;
}

.text-gradient {
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-secondary) 50%, var(--color-accent) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

/* Buttons */
.van-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-title);
  font-size: 0.95rem;
  font-weight: 600;
  padding: 10px 22px;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: var(--transition-smooth);
  border: 1px solid transparent;
  outline: none;
  white-space: nowrap;
}

.van-btn--primary {
  background: var(--color-primary);
  color: #ffffff;
  box-shadow: 0 4px 12px rgba(37, 99, 235, 0.2);
}

.van-btn--primary:hover {
  background: var(--color-primary-hover);
  transform: translateY(-1px);
  box-shadow: 0 6px 18px rgba(37, 99, 235, 0.3);
}

.van-btn--outline {
  background: transparent;
  color: var(--color-primary);
  border-color: rgba(37, 99, 235, 0.3);
}

.van-btn--outline:hover {
  background: var(--color-accent-light);
  border-color: var(--color-primary);
  transform: translateY(-1px);
}

.van-btn--small {
  padding: 6px 14px;
  font-size: 0.85rem;
}

/* 3. TOPBAR & HEADER */
.van-topbar {
  background: #0f172a;
  color: rgba(255, 255, 255, 0.85);
  padding: 6px 0;
  font-size: 0.78rem;
  font-family: var(--font-body);
  font-weight: 500;
  z-index: 101;
  position: relative;
}

.van-topbar__inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.van-header {
  background: var(--bg-glass);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border-glass);
  position: sticky;
  top: 0;
  z-index: 100;
  padding: 14px 0;
  box-shadow: 0 4px 20px rgba(15, 23, 42, 0.02);
}

.van-header__inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

/* Logo */
.van-logo {
  display: flex;
  align-items: center;
  gap: 8px;
}

.van-logo__icon {
  background: var(--color-primary);
  color: #ffffff;
  padding: 6px;
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 3px 10px rgba(37, 99, 235, 0.25);
  transition: var(--transition-smooth);
}

.van-logo:hover .van-logo__icon {
  transform: rotate(5deg) scale(1.05);
}

.van-logo__text {
  font-family: var(--font-title);
  font-size: 1.35rem;
  font-weight: 800;
  color: var(--text-main);
  letter-spacing: -0.5px;
}

.van-logo__text span {
  color: var(--color-primary);
}

/* Navigation Links */
.van-nav {
  display: flex;
  align-items: center;
  gap: 24px;
}

.van-nav__link {
  font-family: var(--font-title);
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--text-muted);
  padding: 6px 10px;
  border-radius: var(--radius-sm);
  transition: var(--transition-smooth);
}

.van-nav__link:hover,
.van-nav__link.is-active {
  color: var(--color-primary);
  background: rgba(37, 99, 235, 0.05);
}

.van-btn-cta {
  background: var(--color-primary);
  color: #ffffff;
  font-family: var(--font-title);
  font-size: 0.9rem;
  font-weight: 600;
  padding: 8px 18px;
  border-radius: var(--radius-sm);
  box-shadow: 0 4px 10px rgba(37, 99, 235, 0.15);
}

.van-btn-cta:hover {
  background: var(--color-primary-hover);
  transform: translateY(-1px);
  box-shadow: 0 6px 14px rgba(37, 99, 235, 0.25);
}

/* Hamburger toggle for mobile */
.van-menu-toggle {
  display: none;
  background: transparent;
  border: none;
  cursor: pointer;
  padding: 6px;
  z-index: 102;
}

.van-menu-toggle span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--text-main);
  margin: 5px 0;
  transition: var(--transition-smooth);
}

/* Hamburger active animation */
.van-menu-toggle.is-active span:nth-child(1) {
  transform: rotate(45deg) translate(5px, 5px);
}

.van-menu-toggle.is-active span:nth-child(2) {
  opacity: 0;
}

.van-menu-toggle.is-active span:nth-child(3) {
  transform: rotate(-45deg) translate(5px, -5px);
}

/* Mobile Nav Styles */
.van-mobile-nav {
  display: flex;
  flex-direction: column;
  gap: 14px;
  position: fixed;
  top: 0;
  right: 0;
  width: 280px;
  height: 100vh;
  background: var(--bg-glass-heavy);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-left: 1px solid var(--border-glass);
  padding: 90px 24px 30px;
  z-index: 99;
  transform: translateX(100%);
  transition: var(--transition-smooth);
  box-shadow: -10px 0 30px rgba(15, 23, 42, 0.05);
}

.van-mobile-nav.is-active {
  transform: translateX(0);
}

.van-mobile-nav a {
  font-family: var(--font-title);
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--text-main);
  padding: 8px 16px;
  border-radius: var(--radius-sm);
  transition: var(--transition-smooth);
}

.van-mobile-nav a:hover,
.van-mobile-nav a.is-active {
  color: var(--color-primary);
  background: rgba(37, 99, 235, 0.08);
}

.van-mobile-cta {
  background: var(--color-primary);
  color: #ffffff !important;
  text-align: center;
  margin-top: 10px;
  box-shadow: 0 4px 10px rgba(37, 99, 235, 0.15);
}

/* 4. HERO SECTION */
.van-hero {
  padding: 60px 0;
  position: relative;
}

.van-hero__grid {
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: 50px;
  align-items: center;
}

.van-hero__title {
  font-size: 3rem;
  letter-spacing: -1px;
  line-height: 1.15;
  margin-bottom: 20px;
}

.van-hero__title span {
  display: block;
}

.van-hero__subtitle {
  font-size: 1.15rem;
  color: var(--text-muted);
  margin-bottom: 30px;
  line-height: 1.65;
}

.van-hero__cta {
  display: flex;
  gap: 16px;
}

.van-hero__image-wrap {
  position: relative;
}

.van-hero__image-wrap::before {
  content: '';
  position: absolute;
  top: -10px;
  left: -10px;
  right: 10px;
  bottom: 10px;
  background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
  border-radius: var(--radius-lg);
  z-index: -1;
  opacity: 0.15;
  filter: blur(8px);
}

.van-hero__image {
  width: 100%;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  border: 1px solid var(--border-glass);
}

/* 5. TABS SLIDER / FEATURES */
.van-tabs-section {
  padding: 60px 0 80px;
}

.van-section-header {
  text-align: center;
  margin-bottom: 45px;
}

.van-section-title {
  font-size: 2.25rem;
  letter-spacing: -0.5px;
  margin-bottom: 12px;
}

.van-section-desc {
  color: var(--text-muted);
  font-size: 1.05rem;
  max-width: 650px;
  margin: 0 auto;
}

/* Tabs list */
.van-tabs {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  margin-bottom: 30px;
}

.van-tab {
  background: var(--bg-secondary);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-md);
  padding: 20px;
  cursor: pointer;
  text-align: left;
  transition: var(--transition-smooth);
  outline: none;
}

.van-tab:hover {
  border-color: rgba(37, 99, 235, 0.3);
  box-shadow: var(--shadow-md);
}

.van-tab.is-active {
  border-color: var(--color-primary);
  box-shadow: var(--shadow-lg);
  background: rgba(37, 99, 235, 0.02);
}

.van-tab__icon {
  color: var(--color-primary);
  margin-bottom: 12px;
}

.van-tab__title {
  font-size: 1.05rem;
  font-weight: 700;
  margin-bottom: 6px;
}

.van-tab__desc {
  font-size: 0.85rem;
  color: var(--text-muted);
  line-height: 1.4;
}

/* Tab contents */
.van-tabs-content {
  background: var(--bg-secondary);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  padding: 40px;
}

.van-tab-panel {
  display: none;
  animation: fadeIn 0.4s ease;
}

.van-tab-panel.is-active {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
  align-items: center;
}

.van-tab-panel__text h3 {
  font-size: 1.75rem;
  margin-bottom: 16px;
  letter-spacing: -0.5px;
}

.van-tab-panel__text p {
  color: var(--text-muted);
  font-size: 0.98rem;
  margin-bottom: 20px;
  line-height: 1.7;
}

.van-tab-panel__bullets {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin-bottom: 24px;
}

.van-tab-panel__bullets li {
  font-size: 0.92rem;
  display: flex;
  align-items: flex-start;
  gap: 8px;
}

.van-tab-panel__bullets li::before {
  content: '✓';
  color: #10b981;
  font-weight: 800;
  flex-shrink: 0;
}

.van-tab-panel__image {
  width: 100%;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-md);
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(10px); }
  to { opacity: 1; transform: translateY(0); }
}

/* 6. SOLUTIONS PAGE CARDS */
.van-solutions-section {
  padding: 80px 0;
  background: var(--bg-secondary);
  border-top: 1px solid var(--border-light);
  border-bottom: 1px solid var(--border-light);
  position: relative;
}

.van-solutions-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 30px;
}

.van-solution-card {
  background: var(--bg-primary);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-lg);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  box-shadow: var(--shadow-sm);
  transition: var(--transition-smooth);
}

.van-solution-card:hover {
  transform: translateY(-6px);
  border-color: rgba(37, 99, 235, 0.2);
  box-shadow: var(--shadow-hover);
}

.van-solution-card__image-wrap {
  width: 100%;
  aspect-ratio: 16/10;
  overflow: hidden;
  background: #f1f5f9;
}

.van-solution-card__image {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: var(--transition-smooth);
}

.van-solution-card:hover .van-solution-card__image {
  transform: scale(1.05);
}

.van-solution-card__body {
  padding: 24px;
  display: flex;
  flex-direction: column;
  flex-grow: 1;
}

.van-solution-card__title {
  font-size: 1.25rem;
  margin-bottom: 8px;
  letter-spacing: -0.4px;
}

.van-solution-card__desc {
  font-size: 0.92rem;
  color: var(--text-muted);
  line-height: 1.6;
  margin-bottom: 20px;
  flex-grow: 1;
}

/* 7. FORM SIDEBAR & GET A QUOTE PAGE */
.van-quote-section {
  padding: 60px 0 80px;
}

.van-quote-grid {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 50px;
  align-items: start;
}

.van-quote-text h1 {
  font-size: 2.75rem;
  letter-spacing: -1.2px;
  margin-bottom: 20px;
}

.van-quote-text p {
  color: var(--text-muted);
  font-size: 1.05rem;
  margin-bottom: 30px;
  line-height: 1.7;
}

.van-benefit-list {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.van-benefit {
  display: flex;
  align-items: flex-start;
  gap: 16px;
  background: var(--bg-secondary);
  padding: 20px;
  border-radius: var(--radius-md);
  border: 1px solid var(--border-light);
}

.van-benefit__icon {
  background: var(--color-accent-light);
  color: var(--color-primary);
  padding: 10px;
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.van-benefit__title {
  font-size: 1.05rem;
  font-weight: 700;
  margin-bottom: 4px;
}

.van-benefit__desc {
  font-size: 0.88rem;
  color: var(--text-muted);
  line-height: 1.5;
}

/* Form Styling */
.van-form-container {
  background: var(--bg-secondary);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  padding: 35px;
}

.van-form-title {
  font-size: 1.4rem;
  margin-bottom: 24px;
  text-align: center;
}

.van-form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin-bottom: 16px;
}

.van-form-group {
  margin-bottom: 16px;
}

.van-label {
  display: block;
  font-size: 0.88rem;
  font-weight: 600;
  margin-bottom: 6px;
  color: var(--text-main);
}

.van-input {
  width: 100%;
  background: var(--bg-primary);
  border: 1px solid rgba(226, 232, 240, 0.8);
  border-radius: var(--radius-sm);
  padding: 10px 14px;
  font-family: var(--font-body);
  font-size: 0.95rem;
  color: var(--text-main);
  outline: none;
  transition: var(--transition-smooth);
}

.van-input:focus {
  border-color: var(--color-primary);
  background: #ffffff;
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.15);
}

.van-textarea {
  min-height: 100px;
  resize: vertical;
}

/* Success notification message inside form */
.van-form-success {
  background: #d1fae5;
  border: 1px solid #10b981;
  color: #065f46;
  border-radius: var(--radius-sm);
  padding: 16px;
  margin-top: 16px;
  text-align: center;
  font-weight: 600;
  display: none;
}

/* 8. GENERAL SUB-PAGES (PRIVACY, TERMS, ETC.) */
.page-container {
  padding: 50px 0 80px;
  max-width: 850px;
  margin: 0 auto;
}

.page-title {
  font-size: 2.75rem;
  margin-bottom: 20px;
  letter-spacing: -1px;
}

.page-content {
  color: var(--text-main);
  line-height: 1.75;
  font-size: 1rem;
}

.page-content p {
  margin-bottom: 20px;
}

.page-content h2 {
  font-size: 1.6rem;
  margin: 35px 0 15px;
  letter-spacing: -0.5px;
}

.page-content ul {
  margin-left: 20px;
  margin-bottom: 24px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.page-content li {
  margin-bottom: 4px;
}

/* 9. FOOTER & COOKIE BANNER */
.van-footer {
  background: #f1f5f9;
  color: var(--text-main);
  border-top: 1px solid var(--border-light);
  padding: 60px 0 30px;
  margin-top: auto;
  font-size: 0.92rem;
  position: relative;
  z-index: 10;
}

.van-footer__top {
  display: grid;
  grid-template-columns: 1.3fr 1fr 1fr;
  gap: 50px;
  margin-bottom: 40px;
}

.van-footer__brand-col {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.van-footer__desc {
  color: var(--text-muted);
  line-height: 1.6;
}

.van-footer__title {
  font-size: 1rem;
  color: var(--text-main);
  margin-bottom: 16px;
  text-transform: uppercase;
  letter-spacing: 0.8px;
}

.van-footer__links,
.van-footer__contacts {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.van-footer__links a {
  color: var(--text-muted);
}

.van-footer__links a:hover {
  color: var(--color-primary);
  padding-left: 4px;
}

.van-footer__contacts li {
  color: var(--text-muted);
  line-height: 1.5;
}

.van-footer__contacts strong {
  color: var(--text-main);
}

.van-footer__disclosure {
  background: rgba(255, 255, 255, 0.6);
  border: 1px solid rgba(226, 232, 240, 0.8);
  border-radius: var(--radius-md);
  padding: 18px;
  margin-bottom: 30px;
  color: var(--text-muted);
  font-size: 0.85rem;
  line-height: 1.6;
}

.van-footer__disclosure strong {
  color: var(--text-main);
}

.van-footer__bottom {
  border-top: 1px solid rgba(15, 23, 42, 0.06);
  padding-top: 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 16px;
  color: var(--text-muted);
}

.van-footer__copy a {
  color: var(--color-primary);
  font-weight: 500;
}

.van-footer__copy a:hover {
  text-decoration: underline;
}

.van-footer__secure {
  font-weight: 600;
  color: var(--text-main);
}

/* Cookie Consent Banner */
.van-cookie-banner {
  position: fixed;
  bottom: 24px;
  left: 24px;
  right: 24px;
  max-width: 850px;
  margin: 0 auto;
  background: rgba(255, 255, 255, 0.85);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid rgba(255, 255, 255, 0.7);
  box-shadow: 0 20px 50px rgba(15, 23, 42, 0.1);
  padding: 20px 28px;
  border-radius: var(--radius-lg);
  z-index: 1000;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 30px;
  transform: translateY(180%);
  transition: transform 0.6s cubic-bezier(0.16, 1, 0.3, 1);
}

.van-cookie-banner.is-visible {
  transform: translateY(0);
}

.van-cookie-banner__text {
  font-size: 0.9rem;
  color: var(--text-muted);
  line-height: 1.5;
}

.van-cookie-banner__text strong {
  color: var(--text-main);
  font-family: var(--font-title);
}

.van-cookie-banner__text a {
  color: var(--color-primary);
  text-decoration: underline;
}

.van-cookie-banner__actions {
  display: flex;
  gap: 12px;
  flex-shrink: 0;
}

/* 10. RESPONSIVE DESIGN */
@media (max-width: 1024px) {
  .van-hero__title {
    font-size: 2.5rem;
  }
  .van-tabs {
    grid-template-columns: repeat(2, 1fr);
  }
  .van-solutions-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 768px) {
  .van-topbar {
    text-align: center;
  }
  .van-topbar__inner {
    justify-content: center;
  }
  .van-hero__grid {
    grid-template-columns: 1fr;
    gap: 40px;
  }
  .van-hero__image-wrap {
    order: -1;
    max-width: 500px;
    margin: 0 auto;
  }
  .van-tab-panel.is-active {
    grid-template-columns: 1fr;
    gap: 24px;
  }
  .van-tab-panel__image {
    order: -1;
  }
  .van-solutions-grid {
    grid-template-columns: 1fr;
    max-width: 450px;
    margin: 0 auto;
  }
  .van-quote-grid {
    grid-template-columns: 1fr;
    gap: 40px;
  }
  .van-footer__top {
    grid-template-columns: 1fr;
    gap: 35px;
  }
  .van-menu-toggle {
    display: block;
  }
  .van-nav {
    display: none;
  }
  .van-cookie-banner {
    flex-direction: column;
    align-items: stretch;
    bottom: 16px;
    left: 16px;
    right: 16px;
    padding: 20px;
    gap: 20px;
    transform: translateY(220%);
  }
  .van-cookie-banner.is-visible {
    transform: translateY(0);
  }
  .van-cookie-banner__actions {
    justify-content: flex-end;
  }
}

@media (max-width: 480px) {
  .van-tabs {
    grid-template-columns: 1fr;
  }
  .van-form-row {
    grid-template-columns: 1fr;
    gap: 0;
  }
}