/* ==========================================================================
   VVRSMART CORE DESIGN SYSTEM
   Base Typography, Buttons, Global Header/Footer & Component Geometry
   ========================================================================== */

*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  color-scheme: dark;
}

body {
  font-family: 'DM Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  background-color: var(--theme-bg, var(--vvr-obsidian));
  color: var(--theme-text-primary, var(--vvr-white));
  min-height: 100vh;
  overflow-x: hidden;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  transition: background-color 0.4s ease, color 0.3s ease;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
  font-family: 'Syne', sans-serif;
  color: var(--theme-text-primary, var(--vvr-white));
  line-height: 1.15;
  letter-spacing: -0.025em;
  font-weight: 700;
}

p {
  color: var(--theme-text-secondary, var(--vvr-slate));
  font-size: 1rem;
}

a {
  color: inherit;
  text-decoration: none;
  transition: color 0.2s ease;
}

/* Custom Scrollbars */
::-webkit-scrollbar {
  width: 7px;
  height: 7px;
}
::-webkit-scrollbar-track {
  background: var(--theme-bg, var(--vvr-obsidian));
}
::-webkit-scrollbar-thumb {
  background: var(--vvr-border-strong);
  border-radius: 4px;
}
::-webkit-scrollbar-thumb:hover {
  background: var(--theme-accent, var(--vvr-mint));
}

/* Global Container */
.vvr-container {
  width: 100%;
  max-width: 1240px;
  margin-left: auto;
  margin-right: auto;
  padding-left: 24px;
  padding-right: 24px;
}

.vvr-container-narrow {
  max-width: 860px;
  margin-left: auto;
  margin-right: auto;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-family: 'DM Sans', sans-serif;
  font-weight: 600;
  font-size: 0.9375rem;
  padding: 11px 22px;
  border-radius: 9px;
  border: 1px solid transparent;
  cursor: pointer;
  transition: all 0.2s ease;
  white-space: nowrap;
  text-decoration: none;
}

.btn-sm {
  padding: 7px 15px;
  font-size: 0.8125rem;
  border-radius: 7px;
}

.btn-lg {
  padding: 14px 28px;
  font-size: 1.05rem;
  border-radius: 10px;
}

.btn-primary {
  background: var(--theme-accent, var(--vvr-mint));
  color: #06090D;
  font-weight: 700;
  box-shadow: 0 4px 18px var(--theme-accent-glow, var(--vvr-mint-glow));
}

.btn-primary:hover {
  transform: translateY(-1.5px);
  filter: brightness(1.08);
}

.btn-outline {
  background: transparent;
  color: var(--theme-text-primary, var(--vvr-white));
  border-color: var(--theme-border, var(--vvr-border-strong));
}

.btn-outline:hover {
  border-color: var(--theme-accent, var(--vvr-mint));
  color: var(--theme-accent, var(--vvr-mint));
  background: var(--theme-accent-dim, var(--vvr-mint-dim));
  transform: translateY(-1.5px);
}

.btn-secondary {
  background: var(--theme-surface, var(--vvr-graphite));
  color: var(--theme-text-primary, var(--vvr-white));
  border-color: var(--theme-border, var(--vvr-border));
}

.btn-secondary:hover {
  background: var(--theme-surface-hover, var(--vvr-graphite-hover));
  border-color: var(--theme-border-accent, var(--vvr-border-mint));
}

.btn-ghost {
  background: transparent;
  color: var(--theme-text-secondary, var(--vvr-slate));
}

.btn-ghost:hover {
  color: var(--theme-text-primary, var(--vvr-white));
  background: rgba(255, 255, 255, 0.05);
}

/* Badges & Tags */
.vvr-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding: 4px 12px;
  border-radius: 100px;
  background: var(--theme-accent-dim, var(--vvr-mint-dim));
  border: 1px solid var(--theme-border-accent, var(--vvr-border-mint));
  color: var(--theme-accent, var(--vvr-mint));
}

.vvr-badge-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background-color: var(--theme-accent, var(--vvr-mint));
}

/* Status Badges */
.status-badge {
  font-size: 0.7rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  padding: 3px 8px;
  border-radius: 4px;
  border: 1px solid transparent;
}
.status-demo {
  background: rgba(101, 246, 194, 0.12);
  color: #65F6C2;
  border-color: rgba(101, 246, 194, 0.3);
}
.status-pilot {
  background: rgba(66, 232, 255, 0.12);
  color: #42E8FF;
  border-color: rgba(66, 232, 255, 0.3);
}
.status-prototype {
  background: rgba(118, 103, 245, 0.14);
  color: #B6A7FF;
  border-color: rgba(118, 103, 245, 0.3);
}
.status-client {
  background: rgba(255, 167, 38, 0.14);
  color: #FFA726;
  border-color: rgba(255, 167, 38, 0.3);
}
.status-concept {
  background: rgba(255, 255, 255, 0.08);
  color: #82909C;
  border-color: rgba(255, 255, 255, 0.15);
}

/* Header & Global Nav */
.vvr-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(11, 15, 20, 0.88);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--vvr-border);
  transition: background-color 0.3s ease;
}

.nav-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 70px;
}

.brand-wrapper {
  display: flex;
  align-items: center;
  gap: 12px;
}

.brand-link {
  display: flex;
  align-items: center;
  gap: 9px;
  font-family: 'Syne', sans-serif;
  font-weight: 800;
  font-size: 1.4rem;
  letter-spacing: -0.03em;
  color: var(--vvr-white);
}

.brand-icon {
  width: 28px;
  height: 28px;
  border-radius: 7px;
  background: linear-gradient(135deg, var(--vvr-mint) 0%, #059669 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 900;
  font-size: 1rem;
  color: #06090D;
}

.brand-smart {
  color: var(--vvr-mint);
}

.brand-subbadge {
  font-size: 0.65rem;
  font-weight: 700;
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid var(--vvr-border);
  color: var(--vvr-slate);
  padding: 2px 6px;
  border-radius: 4px;
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

/* Nav Menu */
.nav-links {
  display: flex;
  align-items: center;
  gap: 2px;
  list-style: none;
}

.nav-item a {
  padding: 7px 13px;
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--vvr-slate);
  border-radius: 7px;
  transition: color 0.15s ease, background 0.15s ease;
}

.nav-item a:hover {
  color: var(--vvr-white);
  background: rgba(255, 255, 255, 0.05);
}

.nav-item a.active {
  color: var(--vvr-white);
  background: rgba(255, 255, 255, 0.08);
  font-weight: 600;
}

/* Nav Dropdown System */
.nav-item {
  position: relative;
}

.nav-dropdown-toggle {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  cursor: pointer;
}

.nav-dropdown-toggle svg {
  transition: transform 0.2s ease;
}

.nav-item:hover .nav-dropdown-toggle svg {
  transform: rotate(180deg);
}

.nav-dropdown-menu {
  position: absolute;
  top: calc(100% + 4px);
  left: 0;
  background: rgba(15, 21, 29, 0.96);
  backdrop-filter: blur(24px);
  -webkit-backdrop-filter: blur(24px);
  border: 1px solid var(--vvr-border-strong);
  border-radius: 12px;
  padding: 18px;
  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.7);
  opacity: 0;
  visibility: hidden;
  transform: translateY(8px);
  transition: all 0.2s cubic-bezier(0.16, 1, 0.3, 1);
  z-index: 1000;
}

.nav-item:hover .nav-dropdown-menu {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.dropdown-platform {
  width: 620px;
  display: flex;
  flex-direction: column;
  gap: 16px;
  padding: 20px;
}

.dropdown-platform-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}

.dropdown-platform-banner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px 14px;
  background: rgba(101, 246, 194, 0.07);
  border: 1px solid rgba(101, 246, 194, 0.22);
  border-radius: 8px;
  font-size: 0.78rem;
}

.dp-banner-left {
  display: flex;
  align-items: center;
  gap: 8px;
  color: var(--vvr-slate);
}

.dp-badge {
  background: var(--vvr-mint);
  color: #06090D;
  font-size: 0.65rem;
  font-weight: 800;
  padding: 2px 6px;
  border-radius: 4px;
  letter-spacing: 0.05em;
}

.dp-banner-link {
  color: var(--vvr-mint) !important;
  font-weight: 700;
  font-size: 0.78rem;
  padding: 0 !important;
  text-decoration: none;
}

.dp-banner-link:hover {
  text-decoration: underline;
  background: none !important;
}

.dropdown-company {
  width: 260px;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.dropdown-header-label {
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--theme-accent, var(--vvr-mint));
  margin-bottom: 8px;
  padding-bottom: 6px;
  border-bottom: 1px solid var(--vvr-border);
}

.dropdown-item-link {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  padding: 8px 10px;
  border-radius: 8px;
  color: var(--vvr-white) !important;
  transition: background 0.15s ease;
  text-decoration: none;
}

.dropdown-item-link:hover {
  background: rgba(255, 255, 255, 0.06);
}

.dropdown-item-icon {
  font-size: 1.1rem;
  line-height: 1;
  margin-top: 2px;
  flex-shrink: 0;
}

.dropdown-item-title {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--vvr-white);
  line-height: 1.2;
}

.dropdown-item-desc {
  font-size: 0.74rem;
  color: var(--vvr-slate);
  margin-top: 2px;
  line-height: 1.35;
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: 12px;
}

/* Mobile Toggle */
.mobile-nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 6px;
}
.mobile-nav-toggle span {
  width: 22px;
  height: 2px;
  background: var(--vvr-white);
  border-radius: 2px;
  transition: all 0.2s ease;
}

/* Footer */
.vvr-footer {
  background: var(--vvr-obsidian);
  border-top: 1px solid var(--vvr-border);
  padding: 80px 0 40px;
  margin-top: 100px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr 1.2fr;
  gap: 40px;
  padding-bottom: 50px;
  border-bottom: 1px solid var(--vvr-border);
}

.footer-col-title {
  font-family: 'Syne', sans-serif;
  font-size: 0.8125rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--vvr-white);
  margin-bottom: 18px;
}

.footer-links-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.footer-links-list a {
  font-size: 0.875rem;
  color: var(--vvr-slate);
}

.footer-links-list a:hover {
  color: var(--vvr-mint);
}

.footer-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 30px;
  font-size: 0.8125rem;
  color: var(--vvr-slate);
  flex-wrap: wrap;
  gap: 16px;
}

.footer-pill-notice {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--vvr-border);
  padding: 4px 10px;
  border-radius: 100px;
  font-size: 0.75rem;
  color: var(--vvr-slate);
}

/* Toast System */
.vvr-toast-container {
  position: fixed;
  bottom: 24px;
  right: 24px;
  z-index: 10000;
  display: flex;
  flex-direction: column;
  gap: 10px;
  pointer-events: none;
}

.vvr-toast {
  pointer-events: auto;
  background: var(--vvr-graphite);
  border: 1px solid var(--theme-border-accent, var(--vvr-border-mint));
  border-radius: 9px;
  padding: 12px 18px;
  font-size: 0.875rem;
  color: var(--vvr-white);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.5);
  display: flex;
  align-items: center;
  gap: 10px;
  animation: slideIn 0.25s ease-out forwards;
}

@keyframes slideIn {
  from { opacity: 0; transform: translateY(12px); }
  to { opacity: 1; transform: translateY(0); }
}