/* ============================================
   Premium International Phone Input Component
   ============================================ */

/* --- Container --- */
.pi-group {
  position: relative;
}

.pi-wrapper {
  display: flex;
  align-items: stretch;
  border: 1.5px solid var(--border, #e2e8f0);
  border-radius: var(--radius-sm, 6px);
  background: var(--bg-surface, #fff);
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
  overflow: hidden;
}

.pi-wrapper:hover {
  border-color: var(--color-primary, #2563eb);
}

.pi-wrapper:focus-within {
  border-color: var(--color-primary, #2563eb);
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.12);
}

.pi-wrapper.pi-valid {
  border-color: #10b981 !important;
}

.pi-wrapper.pi-invalid {
  border-color: #ef4444 !important;
}

.pi-wrapper.pi-invalid:focus-within {
  box-shadow: 0 0 0 3px rgba(239, 68, 68, 0.12);
}

/* --- Country Trigger Button --- */
.pi-country-btn {
  display: flex;
  align-items: center;
  gap: 0.45rem;
  padding: 0 0.75rem;
  min-width: 130px;
  border: none;
  border-right: 1.5px solid var(--border, #e2e8f0);
  background: var(--bg-elevated, #f8fafc);
  color: var(--text-primary, #1e293b);
  font-family: inherit;
  font-size: 0.875rem;
  font-weight: 600;
  cursor: pointer;
  transition: background 0.15s ease;
  white-space: nowrap;
  flex-shrink: 0;
}

.pi-country-btn:hover {
  background: var(--bg-surface, #fff);
}

.pi-country-btn:focus {
  outline: none;
}

.pi-flag {
  font-size: 1.35rem;
  line-height: 1;
  filter: drop-shadow(0 0.5px 1px rgba(0,0,0,0.08));
  /* Emoji fallback for flag rendering on Windows */
  font-family: "Segoe UI Emoji", "Apple Color Emoji", "Noto Color Emoji", "EmojiOne Color", sans-serif;
}

.pi-country-name {
  max-width: 70px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.pi-dial {
  color: var(--text-muted, #94a3b8);
  font-weight: 700;
  font-size: 0.8rem;
}

.pi-chevron {
  width: 12px;
  height: 12px;
  stroke: var(--text-muted, #94a3b8);
  transition: transform 0.2s ease;
  flex-shrink: 0;
  margin-left: 0.15rem;
}

.pi-country-btn[aria-expanded="true"] .pi-chevron {
  transform: rotate(180deg);
}

/* --- Phone Number Input --- */
.pi-phone-input {
  flex: 1;
  min-width: 0;
  padding: 0.65rem 0.75rem;
  border: none;
  background: transparent;
  color: var(--text-primary, #1e293b);
  font-family: inherit;
  font-size: 0.95rem;
  font-weight: 500;
  letter-spacing: 0.02em;
  outline: none;
}

.pi-phone-input::placeholder {
  color: var(--text-muted, #94a3b8);
  font-weight: 400;
}

.pi-phone-input:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

/* --- Dropdown Overlay --- */
.pi-dropdown-overlay {
  display: none;
  position: fixed;
  inset: 0;
  z-index: 9998;
}

.pi-dropdown-overlay.open {
  display: block;
}

/* --- Dropdown Panel --- */
.pi-dropdown {
  display: none;
  position: absolute;
  top: calc(100% + 6px);
  left: 0;
  z-index: 9999;
  width: 340px;
  max-height: 400px;
  border: 1px solid var(--border, #e2e8f0);
  border-radius: var(--radius-md, 10px);
  background: var(--bg-surface, #fff);
  box-shadow: 0 12px 40px rgba(0,0,0,0.12), 0 4px 12px rgba(0,0,0,0.06);
  overflow: hidden;
  animation: pi-slide-down 0.18s ease-out;
}

@keyframes pi-slide-down {
  from { opacity: 0; transform: translateY(-6px) scale(0.97); }
  to { opacity: 1; transform: translateY(0) scale(1); }
}

.pi-dropdown.open {
  display: block;
}

/* --- Search --- */
.pi-search-wrap {
  padding: 0.65rem;
  border-bottom: 1px solid var(--border, #e2e8f0);
  background: var(--bg-elevated, #f8fafc);
}

.pi-search {
  width: 100%;
  padding: 0.55rem 0.75rem 0.55rem 2.2rem;
  border: 1.5px solid var(--border, #e2e8f0);
  border-radius: var(--radius-sm, 6px);
  background: var(--bg-surface, #fff);
  color: var(--text-primary, #1e293b);
  font-family: inherit;
  font-size: 0.85rem;
  outline: none;
  transition: border-color 0.15s ease;
  box-sizing: border-box;
}

.pi-search:focus {
  border-color: var(--color-primary, #2563eb);
}

.pi-search::placeholder {
  color: var(--text-muted, #94a3b8);
}

.pi-search-icon {
  position: absolute;
  left: 0.85rem;
  top: 50%;
  transform: translateY(-50%);
  width: 15px;
  height: 15px;
  stroke: var(--text-muted, #94a3b8);
  pointer-events: none;
}

/* --- Country List --- */
.pi-list {
  overflow-y: auto;
  max-height: 310px;
  overscroll-behavior: contain;
  padding: 0.25rem 0;
}

.pi-list::-webkit-scrollbar {
  width: 5px;
}

.pi-list::-webkit-scrollbar-track {
  background: transparent;
}

.pi-list::-webkit-scrollbar-thumb {
  background: var(--border, #e2e8f0);
  border-radius: 3px;
}

.pi-option {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  padding: 0.5rem 0.75rem;
  cursor: pointer;
  transition: background 0.1s ease;
  font-size: 0.85rem;
  color: var(--text-primary, #1e293b);
}

.pi-option:hover {
  background: var(--bg-elevated, #f1f5f9);
}

.pi-option:focus {
  outline: none;
  background: var(--bg-elevated, #f1f5f9);
}

.pi-option.selected {
  background: rgba(37, 99, 235, 0.06);
  font-weight: 600;
}

.pi-option-flag {
  font-size: 1.25rem;
  line-height: 1;
  flex-shrink: 0;
  font-family: "Segoe UI Emoji", "Apple Color Emoji", "Noto Color Emoji", "EmojiOne Color", sans-serif;
}

.pi-option-info {
  flex: 1;
  min-width: 0;
}

.pi-option-name {
  display: block;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  line-height: 1.3;
}

.pi-option-dial {
  display: block;
  font-size: 0.75rem;
  color: var(--text-muted, #94a3b8);
  font-weight: 600;
  line-height: 1.3;
}

.pi-option.selected .pi-option-dial {
  color: var(--color-primary, #2563eb);
}

.pi-option-check {
  width: 16px;
  height: 16px;
  stroke: var(--color-primary, #2563eb);
  opacity: 0;
  flex-shrink: 0;
}

.pi-option.selected .pi-option-check {
  opacity: 1;
}

.pi-empty {
  padding: 1.5rem;
  text-align: center;
  color: var(--text-muted, #94a3b8);
  font-size: 0.85rem;
}

/* --- Validation Message --- */
.pi-validation {
  display: flex;
  align-items: center;
  gap: 0.35rem;
  margin-top: 0.35rem;
  font-size: 0.78rem;
  font-weight: 500;
  line-height: 1.3;
  min-height: 1.1em;
  transition: opacity 0.15s ease;
}

.pi-validation-icon {
  width: 14px;
  height: 14px;
  flex-shrink: 0;
}

.pi-validation.pi-success {
  color: #10b981;
}

.pi-validation.pi-error {
  color: #ef4444;
}

/* --- Hidden Input (E.164) --- */
.pi-e164-input {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  border: 0;
}

/* --- Dark Mode --- */
[data-theme="dark"] .pi-wrapper {
  background: var(--bg-surface, #1e293b);
  border-color: var(--border, #334155);
}

[data-theme="dark"] .pi-wrapper:focus-within {
  border-color: var(--color-primary, #3b82f6);
  box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.2);
}

[data-theme="dark"] .pi-country-btn {
  background: var(--bg-elevated, #0f172a);
  color: var(--text-primary, #f1f5f9);
  border-right-color: var(--border, #334155);
}

[data-theme="dark"] .pi-country-btn:hover {
  background: var(--bg-surface, #1e293b);
}

[data-theme="dark"] .pi-phone-input {
  color: var(--text-primary, #f1f5f9);
}

[data-theme="dark"] .pi-dropdown {
  background: var(--bg-surface, #1e293b);
  border-color: var(--border, #334155);
  box-shadow: 0 12px 40px rgba(0,0,0,0.3);
}

[data-theme="dark"] .pi-search-wrap {
  background: var(--bg-elevated, #0f172a);
  border-bottom-color: var(--border, #334155);
}

[data-theme="dark"] .pi-search {
  background: var(--bg-surface, #1e293b);
  border-color: var(--border, #334155);
  color: var(--text-primary, #f1f5f9);
}

[data-theme="dark"] .pi-option:hover {
  background: var(--bg-elevated, #0f172a);
}

[data-theme="dark"] .pi-option.selected {
  background: rgba(59, 130, 246, 0.1);
}

/* --- Responsive --- */
@media (max-width: 480px) {
  .pi-dropdown {
    width: calc(100vw - 2rem);
    min-width: 280px;
    left: -0.5rem;
  }

  .pi-country-name {
    max-width: 50px;
  }

  .pi-country-btn {
    min-width: 90px;
    padding: 0 0.5rem;
    gap: 0.25rem;
  }

  .pi-flag {
    font-size: 1.1rem;
  }

  .pi-dial {
    font-size: 0.7rem;
  }

  .pi-chevron {
    width: 10px;
    height: 10px;
  }

  .pi-phone-input {
    padding: 0.55rem 0.5rem;
    font-size: 0.85rem;
  }
}

@media (max-width: 380px) {
  .pi-country-btn {
    min-width: 70px;
    padding: 0 0.35rem;
  }

  .pi-country-name {
    display: none;
  }

  .pi-dial {
    font-size: 0.65rem;
  }
}