/* ============================================
   無消費開拓100 — Design System
   v2 color variant: warm coral/sand tone
   ============================================ */
@import url("b43-tokens.css");
@import url("b43-components.css");

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

body {
  font-family: var(--b43-font-stack-ios);
  background: #E6E0D6;
  color: var(--color-text-default-high);
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: var(--dimension-spacing-extra-large) var(--dimension-spacing-medium);
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
}

.phone {
  width: 390px;
  height: 844px;
  background: var(--color-background-default-base);
  border-radius: 44px;
  overflow: hidden;
  position: relative;
  box-shadow: 0 0 0 8px #1a1a1a, 0 20px 60px rgba(0,0,0,0.3);
  display: flex;
  flex-direction: column;
}

.phone-inner {
  flex: 1;
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

.dynamic-island {
  width: 126px;
  height: 36px;
  background: var(--color-reference-black);
  border-radius: 20px;
  position: absolute;
  top: 10px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 100;
}

.status-bar {
  height: 54px;
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  padding: 0 var(--dimension-spacing-large) 6px;
  font-size: 15px;
  font-weight: var(--font-weight-semi-bold);
  flex-shrink: 0;
}

.content {
  flex: 1;
  overflow-y: auto;
  background: var(--color-background-default-accent);
  -webkit-overflow-scrolling: touch;
}

.home-indicator {
  height: 34px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  background: var(--color-background-default-base);
}
.home-indicator::after {
  content: '';
  width: 134px;
  height: 5px;
  background: rgba(0,0,0,0.15);
  border-radius: 3px;
}

.prototype-layout {
  display: flex;
  align-items: flex-start;
  justify-content: center;
  gap: var(--dimension-spacing-extra-large);
  max-width: 1000px;
  margin: 0 auto;
}

.prototype-layout .phone {
  flex-shrink: 0;
}

.explanation-panel {
  flex: 1;
  max-width: 440px;
  min-width: 300px;
  background: var(--color-background-default-base);
  border-radius: var(--dimension-radius-large);
  padding: var(--dimension-spacing-large);
  border: 1px solid var(--color-border-default-low);
  position: sticky;
  top: var(--dimension-spacing-extra-large);
}

@media (max-width: 900px) {
  .prototype-layout {
    flex-direction: column;
    align-items: center;
  }
  .explanation-panel {
    max-width: 390px;
    position: static;
    margin-top: var(--dimension-spacing-extra-large);
  }
}

/* Prev/Next navigation */
.proto-nav {
  position: fixed;
  top: 50%;
  transform: translateY(-50%);
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: var(--color-background-default-base);
  border: 1px solid var(--color-border-default-low);
  display: flex;
  align-items: center;
  justify-content: center;
  text-decoration: none;
  color: var(--color-text-default-high);
  font-size: 20px;
  box-shadow: 0 2px 8px rgba(0,0,0,0.1);
  transition: background 0.2s, box-shadow 0.2s;
  z-index: 200;
}
.proto-nav:hover {
  background: var(--color-reference-coral-90);
  box-shadow: 0 4px 16px rgba(0,0,0,0.15);
}
.proto-nav.-prev { left: max(16px, calc((100vw - 1000px) / 2 - 64px)); }
.proto-nav.-next { right: max(16px, calc((100vw - 1000px) / 2 - 64px)); }
.proto-nav ._num {
  position: absolute;
  bottom: -20px;
  font-size: 11px;
  color: var(--color-text-default-low);
  white-space: nowrap;
}
@media (max-width: 900px) {
  .proto-nav { display: none; }
}

:root {
  --bg-base: var(--color-background-default-base);
  --bg-accent: var(--color-background-default-accent);
  --text-high: var(--color-text-default-high);
  --text-mid: var(--color-text-default-mid);
  --text-low: var(--color-text-default-low);
  --interactive-base: var(--color-interactive-base);
  --interactive-variant: var(--color-interactive-variant);
  --interactive-container: var(--color-interactive-container);
  --border-high: var(--color-border-default-high);
  --border-mid: var(--color-border-default-mid);
  --border-low: var(--color-border-default-low);
  --positive: var(--color-impression-positive-base);
  --negative: var(--color-impression-negative-base);
  --warning: var(--color-impression-attention-base);
  /* v3 accent: coral/warm */
  --v3-accent: var(--color-reference-coral-40);
  --v3-accent-bg: var(--color-reference-coral-90);
  --v3-accent-text: var(--color-reference-coral-30);
}