/* app.v1.0.0.css */

:root {
  /* Safe area insets — fallback 0px cho thiết bị không hỗ trợ */
  --sat: env(safe-area-inset-top, 0px);
  --sar: env(safe-area-inset-right, 0px);
  --sab: env(safe-area-inset-bottom, 0px);
  --sal: env(safe-area-inset-left, 0px);

  --header-height: 52px;
  --info-height: clamp(300px, 40dvh, 380px);
  --overlap: 0px;
}

/* Toàn bộ app chiếm đúng viewport, không scroll ngoài */
html, body {
  height: 100% !important;
  overflow: hidden !important;
  overscroll-behavior: none !important;
  -webkit-tap-highlight-color: transparent !important;
  margin: 0 !important;
  padding: 0 !important;
}

/* Wrapper bọc toàn bộ — tính đúng safe area */
#app {
  display: flex !important;
  flex-direction: column !important;
  height: 100dvh !important;
  padding-top: var(--sat) !important;
  padding-right: var(--sar) !important;
  padding-bottom: var(--sab) !important;
  padding-left: var(--sal) !important;
  box-sizing: border-box !important;
  overflow: hidden !important;
  margin: 0 !important;
}

/* Content: phần còn lại, scroll bên trong */
#app-content {
  flex: 1 !important;
  min-height: 0 !important;
  position: relative !important;
  overflow: hidden !important;
}

/* Wrapper bọc toàn bộ — tính đúng safe area */
#app {
  display: flex;
  flex-direction: column;
  height: 100dvh; /* dynamic viewport height — quan trọng trên mobile */
  padding-top: var(--sat);
  padding-right: var(--sar);
  padding-bottom: var(--sab);
  padding-left: var(--sal);
  box-sizing: border-box;
  overflow: hidden;
}

/* Header: 3 vùng — back | title | settings */
#app-header {
  display: grid;
  grid-template-columns: var(--header-height) 1fr var(--header-height);
  align-items: center;
  height: var(--header-height);
  flex-shrink: 0;
  padding-inline: 4px;
}

#app-header .header-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  cursor: pointer;
  transition: background 0.15s;
  -webkit-user-select: none;
  user-select: none;
}

#app-header .header-btn:active {
  background: rgba(0,0,0,0.08);
}

#app-header .header-title {
  text-align: center;
  font-weight: 600;
  font-size: 17px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

#app-header .header-right {
  justify-self: end;
}

/* Content: phần còn lại, scroll bên trong */
#app-content {
  flex:1;
  min-height: 0;
  position: relative;
}

#app-content > div {
  height: 100%;
  overflow-y: auto;
  -webkit-overflow-scrolling: touch;
  overscroll-behavior-y: contain;
}



/* Camera section - Chiếm phần còn lại của màn hình */
#camera-section {
    position: relative;
    width: 100%;
    flex: 1;
    min-height: 0;
    z-index: 1;
    /* Đảm bảo không bị info-section che */
    padding-bottom: env(safe-area-inset-bottom);
    height: calc(100dvh - var(--info-height));
}

/* Info section - Khung dưới cùng */
#info-section {
    position: fixed;
    bottom: 0;
    width: 100%;
    height: var(--info-height);
    max-height: none;
    background: white;
    border-top-left-radius: 2.5rem;
    border-top-right-radius: 2.5rem;
    box-shadow: 0 -15px 30px rgba(0,0,0,0.4);
    z-index: 10;
    display: flex;
    flex-direction: column;
    margin-top: calc(-1 * var(--overlap));
    overscroll-behavior: contain;
}

.ios-scroll-lock {
    flex: 1;
    min-height: 0;
    overflow-y: auto;
    -webkit-overflow-scrolling: touch;
    overscroll-behavior: contain;
}

/* Action bar - Dính sát đáy dưới cùng */
.action-bar {
    padding: 0.5rem;
    padding-bottom: calc(env(safe-area-inset-bottom) + 0.5rem);
    background: white;
    margin-top: auto;
}

.btn-shadow {
    box-shadow: 0 10px 20px -5px rgba(161, 27, 75, 0.4);
}

/* App view - full height when shown */
#app-view {
    display: none;
    height: 100%;
    transition: opacity 0.3s ease;
}

#app-view.opacity-0 {
    opacity: 0;
}

#app-view:not(.hidden) {
    display: flex;
    flex-direction: column;
}

/* Camera section in app-view */
#app-view #camera-section {
    flex: 1;
    position: relative;
    min-height: 0;
}

/* Info section in app-view */
#app-view #info-section {
    flex-shrink: 0;
    background: white;
    border-top: 1px solid #e5e7eb;
    border-top-left-radius: 2.5rem;
    border-top-right-radius: 2.5rem;
    box-shadow: 0 -15px 30px rgba(0,0,0,0.4);
    padding: 1rem;
    padding-bottom: calc(env(safe-area-inset-bottom) + 1rem);
    display: flex;
    flex-direction: column;
    height: var(--info-height);
}

/* Home screen grid */
#home-screen {
    padding-top: 2rem;
    height: 100%;
    overflow-y: auto;
    transition: opacity 0.3s ease;
}

#home-screen.opacity-0 {
    opacity: 0;
}

/* Settings page */
#settings-page {
    padding-bottom: calc(env(safe-area-inset-bottom) + 2rem);
    height: 100%;
    overflow-y: auto;
    transition: opacity 0.3s ease;
}

#settings-page.opacity-0 {
    opacity: 0;
}

.setting-item {
    transition: transform 0.15s;
}
.setting-item:active {
    transform: scale(0.98);
}

/* Install prompt */
#install-prompt {
    bottom: calc(env(safe-area-inset-bottom) + 1rem);
    box-shadow: 0 -5px 30px rgba(0,0,0,0.15);
}

@keyframes scan {
    0%, 100% { transform: translateY(0); opacity: 0.2; }
    50% { transform: translateY(220px); opacity: 1; }
}
.scan-anim {
    animation: scan 2.5s ease-in-out infinite;
}

@keyframes shrink {
    from { width: 100%; }
    to { width: 0%; }
}

@media (max-height: 700px) {
    :root {
        --info-height: clamp(250px, 45dvh, 320px);
    }

    #info-section {
        border-top-left-radius: 2rem;
        border-top-right-radius: 2rem;
    }
}