/* ============================================
   Brand Guardian — Modern Layout
   ============================================ */

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

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

body {
  font-family: var(--font-family);
  font-size: var(--text-base);
  font-weight: var(--font-regular);
  color: var(--color-text);
  background: var(--color-bg);
  line-height: 1.5;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* ---- Top Bar ---- */
.bg-topbar {
  position: sticky;
  top: 0;
  height: 64px;
  background: rgba(255, 255, 255, 0.8);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--color-border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 32px;
  z-index: var(--z-panel);
}

.bg-topbar__logo {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: var(--text-xl);
  font-weight: var(--font-bold);
  color: var(--color-text);
  letter-spacing: -0.02em;
}

.bg-topbar__logo-dot {
  width: 12px;
  height: 12px;
  border-radius: 4px;
  background: var(--color-primary);
  transform: rotate(45deg);
}

/* ---- Dashboard Grid ---- */
.bg-dashboard {
  display: grid;
  grid-template-columns: 420px 1fr;
  flex: 1;
  max-width: 1600px;
  margin: 0 auto;
  width: 100%;
}

/* ---- Input Panel (Left) ---- */
.bg-input-panel {
  padding: 32px;
  background: var(--color-bg);
  border-right: 1px solid var(--color-border);
  display: flex;
  flex-direction: column;
  gap: 32px;
  position: sticky;
  top: 64px;
  height: calc(100vh - 64px);
  overflow-y: auto;
}

/* ---- Results Panel (Right) ---- */
.bg-results-panel {
  padding: 32px 48px;
  background: var(--color-bg-card);
  min-height: calc(100vh - 64px);
}

/* ---- Model Slide-in Panel ---- */
.bg-model-panel {
  position: fixed;
  top: 0;
  right: 0;
  width: 400px;
  height: 100vh;
  background: var(--color-bg-card);
  box-shadow: var(--shadow-xl);
  z-index: calc(var(--z-modal) + 10);
  transform: translateX(100%);
  transition: transform var(--transition-slow);
  display: flex;
  flex-direction: column;
}

.bg-model-panel--open {
  transform: translateX(0);
}

.bg-model-panel__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 24px 32px;
  border-bottom: 1px solid var(--color-border);
  font-weight: var(--font-bold);
  font-size: var(--text-lg);
}

.bg-model-panel__body {
  padding: 32px;
  display: flex;
  flex-direction: column;
  gap: 16px;
  flex: 1;
  overflow-y: auto;
}

/* ---- Overlays ---- */
.bg-overlay {
  position: fixed;
  inset: 0;
  background: rgba(15, 23, 42, 0.4);
  backdrop-filter: blur(4px);
  z-index: var(--z-modal);
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--transition-base);
}

.bg-overlay--visible {
  opacity: 1;
  pointer-events: auto;
}

/* ---- Modals ---- */
.bg-modal {
  position: fixed;
  inset: 0;
  z-index: var(--z-modal);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--transition-base);
}

.bg-modal--open {
  opacity: 1;
  pointer-events: auto;
}

.bg-modal__backdrop {
  position: absolute;
  inset: 0;
  background: rgba(15, 23, 42, 0.5);
  backdrop-filter: blur(8px);
}

.bg-modal__dialog {
  position: relative;
  background: var(--color-bg-card);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-xl);
  width: 100%;
  max-width: 1024px;
  max-height: 90vh;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  transform: translateY(20px) scale(0.98);
  transition: transform var(--transition-slow);
}

.bg-modal--open .bg-modal__dialog {
  transform: translateY(0) scale(1);
}

.bg-modal__header {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 24px 32px;
  border-bottom: 1px solid var(--color-border);
}

.bg-modal__body {
  padding: 32px;
  overflow-y: auto;
  flex: 1;
}

.bg-modal__close {
  margin-left: auto;
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-full);
  border: none;
  background: var(--color-bg-hover);
  color: var(--color-text-secondary);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.bg-modal__close:hover {
  background: var(--color-danger-light);
  color: var(--color-danger);
}

/* ---- Responsive ---- */
@media (max-width: 1200px) {
  .bg-dashboard {
    grid-template-columns: 360px 1fr;
  }
}

@media (max-width: 1024px) {
  .bg-dashboard {
    grid-template-columns: 1fr;
    display: block;
  }
  .bg-input-panel {
    position: static;
    height: auto;
    border-right: none;
    border-bottom: 1px solid var(--color-border);
    padding: 24px;
  }
  .bg-results-panel {
    padding: 24px;
  }
}