/**
 * Custom CSS - Static Web Suite
 * Tối ưu hóa trải nghiệm Mobile-First, Safe Area Notch iPhone/Android,
 * Touch Targets >= 44px, Toast notifications và Accordion.
 */

/* 1. Thiết lập cơ bản & Ngăn cuộn ngang */
:root {
  --safe-top: env(safe-area-inset-top, 0px);
  --safe-bottom: env(safe-area-inset-bottom, 0px);
  --safe-left: env(safe-area-inset-left, 0px);
  --safe-right: env(safe-area-inset-right, 0px);
}

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
  -webkit-tap-highlight-color: transparent;
}

body {
  overflow-x: hidden;
  min-height: 100vh;
  min-height: -webkit-fill-available;
  padding-top: var(--safe-top);
  padding-bottom: var(--safe-bottom);
  padding-left: var(--safe-left);
  padding-right: var(--safe-right);
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* 2. Tiêu chuẩn Touch Target Mobile-First (Tối thiểu 44px x 44px) */
button,
[role="button"],
input[type="submit"],
input[type="reset"],
input[type="button"],
.touch-target,
.btn-touch {
  min-height: 44px;
  min-width: 44px;
  touch-action: manipulation;
}

/* Các trường input thân thiện trên di động (tránh zoom tự động trên iOS < 16px) */
input,
select,
textarea {
  font-size: 16px !important;
}

@media (min-width: 768px) {
  input,
  select,
  textarea {
    font-size: 0.95rem !important;
  }
}

/* 3. Mobile Navigation Drawer Animation */
.mobile-drawer {
  transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1), opacity 0.25s ease-in-out;
  will-change: transform, opacity;
}

.mobile-drawer-backdrop {
  transition: opacity 0.3s ease-in-out, visibility 0.3s ease-in-out;
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
}

/* 4. Accordion Styling */
.accordion-content {
  display: grid;
  grid-template-rows: 0fr;
  transition: grid-template-rows 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  overflow: hidden;
}

.accordion-content > div {
  overflow: hidden;
}

.accordion-item[data-open="true"] .accordion-content {
  grid-template-rows: 1fr;
}

.accordion-item[data-open="true"] .accordion-icon {
  transform: rotate(180deg);
}

.accordion-icon {
  transition: transform 0.25s ease;
}

/* 5. Toast Notifications Container */
#toast-container {
  position: fixed;
  bottom: calc(20px + var(--safe-bottom));
  right: 20px;
  left: 20px;
  z-index: 9999;
  display: flex;
  flex-direction: column;
  gap: 10px;
  pointer-events: none;
}

@media (min-width: 640px) {
  #toast-container {
    left: auto;
    max-width: 420px;
  }
}

.toast {
  pointer-events: auto;
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 14px 18px;
  border-radius: 12px;
  background-color: #1e293b;
  color: #f8fafc;
  box-shadow: 0 10px 25px -5px rgba(0, 0, 0, 0.3), 0 8px 10px -6px rgba(0, 0, 0, 0.2);
  border: 1px solid #334155;
  transform: translateY(20px);
  opacity: 0;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  font-size: 0.925rem;
}

.toast.show {
  transform: translateY(0);
  opacity: 1;
}

.toast-success {
  border-left: 4px solid #10b981;
}

.toast-error {
  border-left: 4px solid #ef4444;
}

.toast-info {
  border-left: 4px solid #3b82f6;
}

/* 6. Utility Helper */
.line-clamp-2 {
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.line-clamp-3 {
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}