/**
 * HairPin Mẫu Tóc - Main Design System & UI Styles
 * Modern Pinterest Aesthetic
 */

:root {
  --font-base: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  
  /* Color Palette */
  --color-primary: #E60023; /* Pinterest Signature Red */
  --color-primary-hover: #ad081b;
  --color-primary-soft: rgba(230, 0, 35, 0.08);
  --color-dark: #111111;
  --color-text-main: #211922;
  --color-text-muted: #767676;
  --color-text-light: #9e9e9e;
  --color-border: #e9e9e9;
  --color-bg: #FFFFFF;
  --color-bg-alt: #F7F7F8;
  --color-surface: #EFEFEF;
  --color-surface-hover: #E2E2E2;
  
  /* Badges & Accents */
  --color-accent-pink: #FF3366;
  --color-accent-blue: #0077FF;
  --color-accent-gold: #FF9900;
  
  /* Shadows & Radii */
  --radius-xs: 6px;
  --radius-sm: 12px;
  --radius-md: 16px;
  --radius-lg: 24px;
  --radius-full: 9999px;
  
  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.06);
  --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.08);
  --shadow-lg: 0 12px 32px rgba(0, 0, 0, 0.12);
  --shadow-pin: 0 8px 24px rgba(0, 0, 0, 0.06);
  --shadow-overlay: 0 20px 48px rgba(0, 0, 0, 0.22);
  
  --header-height: 80px;
  --filter-bar-height: 56px;
  --transition-fast: 0.18s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-normal: 0.28s cubic-bezier(0.4, 0, 0.2, 1);
}

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

html {
  font-size: 16px;
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-base);
  background-color: var(--color-bg);
  color: var(--color-text-main);
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

a {
  color: inherit;
  text-decoration: none;
  transition: color var(--transition-fast);
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

button, input, select, textarea {
  font-family: inherit;
  font-size: inherit;
  border: none;
  outline: none;
}

button {
  cursor: pointer;
  background: transparent;
}

/* Container */
.container {
  width: 100%;
  max-width: 1720px;
  margin: 0 auto;
  padding: 0 20px;
}

@media (max-width: 768px) {
  .container {
    padding: 0 12px;
  }
}

/* ==========================================================================
   Header (Pinterest-Style Sticky Navigation)
   ========================================================================== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background-color: rgba(255, 255, 255, 0.96);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--color-border);
  transition: all var(--transition-fast);
}

.header-inner {
  display: flex;
  align-items: center;
  gap: 16px;
  height: var(--header-height);
}

/* Brand Logo */
.site-brand {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 1.35rem;
  font-weight: 800;
  color: var(--color-primary);
  letter-spacing: -0.5px;
  white-space: nowrap;
}

.brand-icon {
  width: 38px;
  height: 38px;
  border-radius: 50%;
  background: var(--color-primary);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 4px 10px rgba(230, 0, 35, 0.35);
}

.brand-text {
  color: var(--color-dark);
}
.brand-text span {
  color: var(--color-primary);
}

/* Navigation Links */
.header-nav {
  display: flex;
  align-items: center;
  gap: 8px;
}

.nav-link {
  padding: 10px 16px;
  border-radius: var(--radius-full);
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--color-dark);
  transition: background var(--transition-fast);
}

.nav-link:hover, .nav-link.active {
  background-color: var(--color-dark);
  color: #fff;
}

/* Search Bar (Pinterest Search Box) */
.header-search {
  flex: 1;
  position: relative;
  max-width: 800px;
}

.search-form-inner {
  display: flex;
  align-items: center;
  background-color: var(--color-surface);
  border-radius: var(--radius-full);
  padding: 0 18px;
  height: 48px;
  transition: all var(--transition-fast);
  border: 2px solid transparent;
}

.search-form-inner:focus-within {
  background-color: #fff;
  border-color: #a8a8a8;
  box-shadow: 0 0 0 4px rgba(0, 0, 0, 0.05);
}

.search-icon {
  color: var(--color-text-muted);
  display: flex;
  align-items: center;
  margin-right: 10px;
}

.search-input {
  width: 100%;
  background: transparent;
  color: var(--color-dark);
  font-size: 0.95rem;
  font-weight: 500;
}

.search-input::placeholder {
  color: var(--color-text-muted);
}

.search-clear-btn {
  color: var(--color-text-muted);
  display: none;
  align-items: center;
  justify-content: center;
  width: 24px;
  height: 24px;
  border-radius: 50%;
  background: var(--color-surface-hover);
}

.search-clear-btn.visible {
  display: flex;
}

/* Header Right Actions */
.header-actions {
  display: flex;
  align-items: center;
  gap: 10px;
}

.header-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background-color: var(--color-surface);
  color: var(--color-dark);
  transition: all var(--transition-fast);
  position: relative;
}

.header-btn:hover {
  background-color: var(--color-surface-hover);
}

.header-btn .btn-badge {
  position: absolute;
  top: 4px;
  right: 4px;
  background-color: var(--color-primary);
  color: #fff;
  font-size: 11px;
  font-weight: 700;
  min-width: 18px;
  height: 18px;
  border-radius: 9px;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 0 4px;
  border: 2px solid #fff;
}

.header-btn-saved {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 0 16px;
  height: 44px;
  border-radius: var(--radius-full);
  background-color: var(--color-surface);
  font-weight: 700;
  font-size: 0.9rem;
  color: var(--color-dark);
  transition: all var(--transition-fast);
}

.header-btn-saved:hover {
  background-color: var(--color-surface-hover);
}

/* ==========================================================================
   Filter Bar & Category Pills (Scrollable Horizontal Strip)
   ========================================================================== */
.filter-bar-wrapper {
  background-color: var(--color-bg);
  border-bottom: 1px solid var(--color-border);
  padding: 10px 0;
  position: sticky;
  top: var(--header-height);
  z-index: 90;
  backdrop-filter: blur(8px);
}

.filter-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  width: 100%;
}

.filter-pills-scroll {
  display: flex;
  align-items: center;
  gap: 8px;
  overflow-x: auto;
  scrollbar-width: none; /* Firefox */
  -ms-overflow-style: none; /* IE */
  padding: 4px 0;
  flex: 1 1 auto;
  min-width: 0; /* Bắt buộc để flexbox co giãn scrollable chính xác */
}

.filter-pills-scroll::-webkit-scrollbar {
  display: none;
}

.filter-pill {
  white-space: nowrap;
  padding: 8px 16px;
  border-radius: var(--radius-full);
  background-color: var(--color-surface);
  color: var(--color-dark);
  font-size: 0.88rem;
  font-weight: 600;
  transition: all var(--transition-fast);
  cursor: pointer;
  user-select: none;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  flex-shrink: 0; /* Không bao giờ bị ép méo text */
  line-height: 1.2;
}

.filter-pill:hover {
  background-color: var(--color-surface-hover);
}

.filter-pill.active {
  background-color: var(--color-dark);
  color: #fff;
}

.filter-pill.active-primary {
  background-color: var(--color-primary);
  color: #fff;
}

/* Advanced Filter Toggle & Dropdowns */
.filter-controls-right {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-shrink: 0; /* Giữ cố định bên phải không bị đè */
  padding-left: 8px;
  border-left: 1px solid var(--color-border);
}

.filter-toggle-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 14px;
  border-radius: var(--radius-full);
  background-color: var(--color-bg);
  border: 1.5px solid var(--color-border);
  font-size: 0.88rem;
  font-weight: 700;
  color: var(--color-dark);
  transition: all var(--transition-fast);
  white-space: nowrap;
}

.filter-toggle-btn:hover, .filter-toggle-btn.active {
  background-color: var(--color-dark);
  border-color: var(--color-dark);
  color: #fff;
}

.filter-sort-select {
  padding: 8px 14px;
  border-radius: var(--radius-full);
  background-color: var(--color-surface);
  border: 1px solid transparent;
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--color-dark);
  cursor: pointer;
  white-space: nowrap;
}

/* Multi-Criteria Filter Dropdown Panel */
.advanced-filter-panel {
  display: none;
  background-color: var(--color-bg-alt);
  border-bottom: 1px solid var(--color-border);
  padding: 20px 0;
  box-shadow: inset 0 2px 4px rgba(0, 0, 0, 0.02);
}

.advanced-filter-panel.is-open {
  display: block;
  animation: slideDown 0.2s ease-out;
}

@keyframes slideDown {
  from { opacity: 0; transform: translateY(-8px); }
  to { opacity: 1; transform: translateY(0); }
}

.filter-group-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 20px;
}

.filter-group {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.filter-group-title {
  font-size: 0.82rem;
  font-weight: 700;
  text-transform: uppercase;
  color: var(--color-text-muted);
  letter-spacing: 0.5px;
}

.filter-group-options {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.filter-chip {
  padding: 6px 12px;
  border-radius: var(--radius-full);
  background-color: #fff;
  border: 1px solid var(--color-border);
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--color-dark);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.filter-chip:hover {
  border-color: #a0a0a0;
}

.filter-chip.active {
  background-color: var(--color-primary);
  border-color: var(--color-primary);
  color: #fff;
}

/* ==========================================================================
   QuickView Modal (Pinterest Pin Detail Pop-up)
   ========================================================================== */
.pin-modal-overlay {
  position: fixed;
  inset: 0;
  background-color: rgba(0, 0, 0, 0.65);
  backdrop-filter: blur(6px);
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.25s ease, visibility 0.25s ease;
}

.pin-modal-overlay.is-active {
  opacity: 1;
  visibility: visible;
}

.pin-modal-container {
  background-color: #fff;
  border-radius: var(--radius-lg);
  max-width: 980px;
  width: 100%;
  max-height: 90vh;
  overflow-y: auto;
  box-shadow: var(--shadow-overlay);
  position: relative;
  transform: scale(0.95) translateY(20px);
  transition: transform 0.25s cubic-bezier(0.16, 1, 0.3, 1);
}

.pin-modal-overlay.is-active .pin-modal-container {
  transform: scale(1) translateY(0);
}

.modal-close-btn {
  position: absolute;
  top: 16px;
  right: 16px;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: var(--color-surface);
  color: var(--color-dark);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 10;
  transition: all var(--transition-fast);
}

.modal-close-btn:hover {
  background: var(--color-surface-hover);
  transform: scale(1.05);
}

/* Modal Content Grid */
.pin-modal-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  min-height: 540px;
}

@media (max-width: 860px) {
  .pin-modal-content {
    grid-template-columns: 1fr;
  }
}

.pin-modal-visual {
  background-color: #000;
  border-top-left-radius: var(--radius-lg);
  border-bottom-left-radius: var(--radius-lg);
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  padding: 24px;
  position: relative;
}

@media (max-width: 860px) {
  .pin-modal-visual {
    border-radius: var(--radius-lg) var(--radius-lg) 0 0;
  }
}

.modal-main-image-wrap {
  max-height: 520px;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 100%;
}

.modal-main-image {
  max-height: 520px;
  max-width: 100%;
  object-fit: contain;
  border-radius: var(--radius-md);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.4);
}

.modal-thumbnails-strip {
  display: flex;
  gap: 10px;
  margin-top: 16px;
  overflow-x: auto;
  max-width: 100%;
  padding-bottom: 4px;
}

.thumb-btn {
  width: 56px;
  height: 56px;
  border-radius: var(--radius-xs);
  overflow: hidden;
  border: 2px solid transparent;
  opacity: 0.6;
  transition: all var(--transition-fast);
  position: relative;
  flex-shrink: 0;
}

.thumb-btn img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.thumb-btn.active, .thumb-btn:hover {
  opacity: 1;
  border-color: var(--color-primary);
  transform: scale(1.05);
}

.before-badge {
  position: absolute;
  top: 2px;
  left: 2px;
  background: var(--color-primary);
  color: #fff;
  font-size: 8px;
  font-weight: 800;
  padding: 1px 4px;
  border-radius: 4px;
}

/* Modal Details Right Side */
.pin-modal-details {
  padding: 36px 32px;
  display: flex;
  flex-direction: column;
}

.pin-modal-top-actions {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 20px;
}

.pin-modal-left-ctrl {
  display: flex;
  align-items: center;
  gap: 10px;
}

.btn-round {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background-color: var(--color-surface);
  color: var(--color-dark);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition-fast);
}

.btn-round:hover {
  background-color: var(--color-surface-hover);
}

.btn-pinterest-save {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 22px;
  border-radius: var(--radius-full);
  background-color: var(--color-primary);
  color: #fff;
  font-weight: 700;
  font-size: 0.95rem;
  transition: all var(--transition-fast);
  box-shadow: 0 4px 12px rgba(230, 0, 35, 0.3);
}

.btn-pinterest-save:hover {
  background-color: var(--color-primary-hover);
  transform: scale(1.02);
}

.btn-pinterest-save.is-saved {
  background-color: var(--color-dark);
}

.modal-hair-title {
  font-size: 1.6rem;
  font-weight: 800;
  line-height: 1.3;
  color: var(--color-dark);
  margin-bottom: 16px;
}

/* Salon Card */
.modal-salon-card {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 16px;
  background-color: var(--color-bg-alt);
  border-radius: var(--radius-md);
  margin-bottom: 20px;
}

.modal-salon-avatar {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: var(--color-primary);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  font-size: 1.1rem;
}

.modal-salon-meta .salon-name {
  font-size: 0.98rem;
  font-weight: 700;
  color: var(--color-dark);
}

.modal-salon-meta .stylist-sub {
  font-size: 0.85rem;
  color: var(--color-text-muted);
}

/* Spec Matrix */
.hair-spec-matrix {
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin-bottom: 20px;
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
  padding: 16px 0;
}

.spec-item {
  display: flex;
  align-items: center;
  gap: 12px;
}

.spec-label {
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--color-text-muted);
  min-width: 140px;
}

.spec-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.spec-pill {
  padding: 4px 10px;
  border-radius: var(--radius-full);
  background: var(--color-surface);
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--color-dark);
}

.spec-pill.highlight {
  background: var(--color-primary-soft);
  color: var(--color-primary);
}

.spec-value.price-text {
  font-weight: 800;
  color: #2e7d32;
  font-size: 1rem;
}

.modal-description {
  margin-bottom: 24px;
}

.desc-heading {
  font-size: 0.9rem;
  font-weight: 700;
  color: var(--color-dark);
  margin-bottom: 6px;
}

.desc-content {
  font-size: 0.9rem;
  color: var(--color-text-muted);
  line-height: 1.6;
}

/* Booking Actions */
.modal-booking-actions {
  display: flex;
  gap: 12px;
  margin-top: auto;
}

.btn-modal-hotline, .btn-modal-book {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 18px;
  border-radius: var(--radius-full);
  font-weight: 700;
  font-size: 0.95rem;
  transition: all var(--transition-fast);
}

.btn-modal-hotline {
  background: var(--color-surface);
  color: var(--color-dark);
}

.btn-modal-hotline:hover {
  background: var(--color-surface-hover);
}

.btn-modal-book {
  background: var(--color-dark);
  color: #fff;
}

.btn-modal-book:hover {
  background: #2b2b2b;
  transform: translateY(-1px);
}

/* ==========================================================================
   Saved Pins Drawer (Bộ Sưu Tập Đã Lưu)
   ========================================================================== */
.saved-drawer-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.5);
  z-index: 999;
  opacity: 0;
  visibility: hidden;
  transition: all 0.25s ease;
}

.saved-drawer-overlay.is-open {
  opacity: 1;
  visibility: visible;
}

.saved-drawer {
  position: fixed;
  top: 0;
  right: 0;
  bottom: 0;
  width: 100%;
  max-width: 440px;
  background: #fff;
  z-index: 1000;
  box-shadow: -4px 0 24px rgba(0, 0, 0, 0.15);
  transform: translateX(100%);
  transition: transform 0.3s cubic-bezier(0.16, 1, 0.3, 1);
  display: flex;
  flex-direction: column;
}

.saved-drawer.is-open {
  transform: translateX(0);
}

.saved-drawer-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 20px 24px;
  border-bottom: 1px solid var(--color-border);
}

.saved-drawer-title {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 1.2rem;
  font-weight: 800;
}

.saved-drawer-body {
  flex: 1;
  overflow-y: auto;
  padding: 16px;
}

.saved-pins-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 12px;
}

.empty-drawer {
  text-align: center;
  padding: 48px 20px;
  color: var(--color-text-muted);
}

/* Toast Notifications */
.mautoc-toast {
  position: fixed;
  bottom: 24px;
  left: 50%;
  transform: translateX(-50%) translateY(100px);
  background: var(--color-dark);
  color: #fff;
  padding: 12px 24px;
  border-radius: var(--radius-full);
  font-weight: 700;
  font-size: 0.9rem;
  z-index: 2000;
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.25);
  transition: transform 0.3s cubic-bezier(0.16, 1, 0.3, 1);
  pointer-events: none;
}

.mautoc-toast.show {
  transform: translateX(-50%) translateY(0);
}

/* ==========================================================================
   Footer
   ========================================================================== */
.site-footer {
  margin-top: 60px;
  border-top: 1px solid var(--color-border);
  background: #fff;
  padding: 40px 0 24px;
}

.footer-top {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 24px;
  margin-bottom: 30px;
}

.footer-col-brand {
  max-width: 380px;
}

.footer-desc {
  font-size: 0.9rem;
  color: var(--color-text-muted);
  margin-top: 10px;
  line-height: 1.6;
}

.footer-nav {
  display: flex;
  gap: 24px;
}

.footer-link {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--color-text-muted);
}

.footer-link:hover {
  color: var(--color-dark);
}

.footer-bottom {
  border-top: 1px solid var(--color-border);
  padding-top: 20px;
  text-align: center;
  font-size: 0.85rem;
  color: var(--color-text-light);
}

/* Responsive Mobile Navigation */
@media (max-width: 768px) {
  .header-nav {
    display: none;
  }
  .site-brand span.brand-title-full {
    display: none;
  }
  .modal-booking-actions {
    flex-direction: column;
  }
  .pin-modal-overlay {
    padding: 8px;
  }
}