/* ============================================
   BÁC SĨ CỦA BẠN — Design System v1.0.0
   ============================================ */

/* 1. CSS CUSTOM PROPERTIES */
:root {
  /* Brand Colors */
  --color-primary:        #1a7f5a;
  --color-primary-light:  #4caf7d;
  --color-primary-dark:   #0f5940;
  --color-primary-bg:     #f0f9f4;
  --color-primary-border: rgba(26,127,90,0.2);

  /* Profession Colors */
  --color-yhct:     #4caf7d;
  --color-medical:  #1565c0;
  --color-pharmacy: #7b1fa2;
  --color-facility: #f57c00;

  /* Status Colors */
  --color-verified:   #2e7d32;
  --color-pending:    #f9a825;
  --color-unverified: #757575;
  --color-danger:     #c62828;
  --color-warning:    #e65100;
  --color-info:       #0277bd;

  /* Text */
  --color-text-primary:   #1a1a2e;
  --color-text-secondary: #4a5568;
  --color-text-muted:     #718096;
  --color-text-light:     #a0aec0;

  /* Background */
  --color-bg-white: #ffffff;
  --color-bg-light: #f7fafc;
  --color-bg-gray:  #edf2f7;

  /* Borders */
  --color-border:      #e2e8f0;
  --color-border-dark: #cbd5e0;

  /* Typography */
  --font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto,
                 'Helvetica Neue', Arial, 'Noto Sans', sans-serif;
  --font-size-xs:   11px;
  --font-size-sm:   13px;
  --font-size-base: 15px;
  --font-size-md:   16px;
  --font-size-lg:   18px;
  --font-size-xl:   20px;
  --font-size-2xl:  24px;
  --font-size-3xl:  30px;

  --font-weight-normal:   400;
  --font-weight-medium:   500;
  --font-weight-semibold: 600;
  --font-weight-bold:     700;

  --line-height-tight:   1.25;
  --line-height-normal:  1.5;
  --line-height-relaxed: 1.75;

  /* Spacing */
  --space-1: 4px;
  --space-2: 8px;
  --space-3: 12px;
  --space-4: 16px;
  --space-5: 20px;
  --space-6: 24px;
  --space-8: 32px;
  --space-10: 40px;
  --space-12: 48px;

  /* Border Radius */
  --radius-sm:   4px;
  --radius-md:   8px;
  --radius-lg:   12px;
  --radius-xl:   16px;
  --radius-2xl:  24px;
  --radius-full: 9999px;

  /* Shadows */
  --shadow-sm:   0 1px 3px rgba(0,0,0,0.08), 0 1px 2px rgba(0,0,0,0.04);
  --shadow-md:   0 4px 6px rgba(0,0,0,0.07), 0 2px 4px rgba(0,0,0,0.05);
  --shadow-lg:   0 10px 15px rgba(0,0,0,0.1), 0 4px 6px rgba(0,0,0,0.05);
  --shadow-xl:   0 20px 25px rgba(0,0,0,0.1), 0 10px 10px rgba(0,0,0,0.04);
  --shadow-card: 0 2px 8px rgba(0,0,0,0.08);

  /* Z-index */
  --z-map:      1;
  --z-controls: 10;
  --z-sidebar:  20;
  --z-header:   30;
  --z-panel:    40;
  --z-overlay:  50;
  --z-modal:    60;
  --z-toast:    70;

  /* Layout */
  --header-height:         60px;
  --mobile-toolbar-height: 64px;
  --sidebar-width:         360px;
  --filter-panel-width:    320px;

  /* Transitions */
  --transition-fast: 150ms ease;
  --transition-base: 250ms ease;
  --transition-slow: 350ms ease;
}

/* 2. MODERN RESET */
*, *::before, *::after { box-sizing: border-box; }
* { margin: 0; padding: 0; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
body {
  font-family: var(--font-family);
  font-size: var(--font-size-base);
  line-height: var(--line-height-normal);
  color: var(--color-text-primary);
  background: var(--color-bg-white);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}
img, picture, video, canvas, svg { display: block; max-width: 100%; }
input, button, textarea, select { font: inherit; }
p, h1, h2, h3, h4, h5, h6 { overflow-wrap: break-word; }
a { color: inherit; text-decoration: none; }
button { cursor: pointer; border: none; background: none; }
ul, ol { list-style: none; }

/* 3. UTILITIES */
.hidden         { display: none !important; }
.sr-only        { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0,0,0,0); border: 0; }
.flex           { display: flex; }
.flex-col       { display: flex; flex-direction: column; }
.items-center   { align-items: center; }
.items-start    { align-items: flex-start; }
.justify-center { justify-content: center; }
.justify-between{ justify-content: space-between; }
.flex-1         { flex: 1; }
.flex-wrap      { flex-wrap: wrap; }
.gap-1          { gap: var(--space-1); }
.gap-2          { gap: var(--space-2); }
.gap-3          { gap: var(--space-3); }
.gap-4          { gap: var(--space-4); }
.min-w-0        { min-width: 0; }
.w-full         { width: 100%; }
.text-center    { text-align: center; }
.text-right     { text-align: right; }
.text-xs        { font-size: var(--font-size-xs); }
.text-sm        { font-size: var(--font-size-sm); }
.text-lg        { font-size: var(--font-size-lg); }
.text-xl        { font-size: var(--font-size-xl); }
.text-muted     { color: var(--color-text-muted); }
.text-secondary { color: var(--color-text-secondary); }
.text-primary   { color: var(--color-primary); }
.font-bold      { font-weight: var(--font-weight-bold); }
.font-semibold  { font-weight: var(--font-weight-semibold); }
.font-medium    { font-weight: var(--font-weight-medium); }
.truncate       { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.mt-1  { margin-top: var(--space-1); }
.mt-2  { margin-top: var(--space-2); }
.mt-3  { margin-top: var(--space-3); }
.mt-4  { margin-top: var(--space-4); }
.mb-2  { margin-bottom: var(--space-2); }
.mb-4  { margin-bottom: var(--space-4); }
.p-2   { padding: var(--space-2); }
.p-4   { padding: var(--space-4); }
.rounded    { border-radius: var(--radius-md); }
.rounded-lg { border-radius: var(--radius-lg); }
.rounded-full { border-radius: var(--radius-full); }
.border     { border: 1px solid var(--color-border); }
.bg-white   { background: var(--color-bg-white); }
.bg-light   { background: var(--color-bg-light); }
.shadow-sm  { box-shadow: var(--shadow-sm); }
.shadow-md  { box-shadow: var(--shadow-md); }

/* 4. BUTTON SYSTEM */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 10px 18px;
  min-height: 44px;
  border-radius: var(--radius-md);
  border: none;
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-semibold);
  text-decoration: none;
  cursor: pointer;
  transition: all var(--transition-fast);
  white-space: nowrap;
  line-height: 1;
  user-select: none;
  -webkit-tap-highlight-color: transparent;
}
.btn:focus-visible { outline: 2px solid var(--color-primary); outline-offset: 2px; }
.btn:disabled { opacity: 0.5; cursor: not-allowed; pointer-events: none; }

.btn-primary   { background: var(--color-primary); color: #fff; }
.btn-primary:hover { background: var(--color-primary-dark); }

.btn-secondary { background: var(--color-bg-gray); color: var(--color-text-secondary); border: 1px solid var(--color-border); }
.btn-secondary:hover { background: var(--color-border); }

.btn-outline   { background: transparent; color: var(--color-primary); border: 1.5px solid var(--color-primary); }
.btn-outline:hover { background: var(--color-primary-bg); }

.btn-ghost     { background: transparent; color: var(--color-text-secondary); }
.btn-ghost:hover { background: var(--color-bg-gray); }

.btn-danger    { background: var(--color-danger); color: #fff; }
.btn-danger:hover { background: #b71c1c; }

.btn-call      { background: var(--color-primary); color: #fff; }
.btn-call:hover { background: var(--color-primary-dark); }

.btn-directions { background: #1565c0; color: #fff; }
.btn-directions:hover { background: #0d47a1; }

.btn-zalo      { background: #0068ff; color: #fff; }
.btn-zalo:hover { background: #0055cc; }

.btn-facebook  { background: #1877f2; color: #fff; }
.btn-facebook:hover { background: #166fe5; }

.btn-sm   { padding: 6px 12px; min-height: 36px; font-size: var(--font-size-xs); border-radius: var(--radius-sm); }
.btn-lg   { padding: 12px 24px; min-height: 52px; font-size: var(--font-size-md); border-radius: var(--radius-lg); }
.btn-full { width: 100%; }
.btn-icon {
  width: 40px; height: 40px; padding: 0;
  border-radius: var(--radius-md);
  background: var(--color-bg-white);
  border: 1px solid var(--color-border);
  box-shadow: var(--shadow-sm);
  color: var(--color-text-secondary);
  font-size: var(--font-size-md);
  display: inline-flex; align-items: center; justify-content: center;
}
.btn-icon:hover { background: var(--color-bg-light); color: var(--color-primary); }

/* 5. BADGE / VERIFICATION */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 3px 10px;
  border-radius: var(--radius-full);
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-semibold);
  line-height: 1.4;
}
.badge-verified   { background: #e8f5e9; color: #2e7d32; border: 1px solid #a5d6a7; }
.badge-pending    { background: #fff8e1; color: #f57f17; border: 1px solid #ffcc80; }
.badge-unverified { background: #f5f5f5; color: #616161; border: 1px solid #e0e0e0; }
.badge-luong-y    { background: #e8f5e9; color: #1b5e20; }
.badge-bac-si     { background: #e3f2fd; color: #0d47a1; }
.badge-co-so      { background: #fff3e0; color: #e65100; }

/* 6. CHIP / TAG */
.chip {
  display: inline-block;
  padding: 4px 12px;
  border-radius: var(--radius-full);
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-medium);
  border: 1px solid var(--color-border);
  color: var(--color-text-secondary);
  background: var(--color-bg-light);
}
.chip-green { background: var(--color-primary-bg); color: var(--color-primary-dark); border-color: var(--color-primary-border); }
.chip-blue  { background: #e3f2fd; color: #0d47a1; border-color: #bbdefb; }
.chip-purple { background: #f3e5f5; color: #4a148c; border-color: #ce93d8; }

/* 7. AVATAR */
.avatar { border-radius: 50%; object-fit: cover; background: var(--color-bg-gray); flex-shrink: 0; }
.avatar-sm  { width: 36px; height: 36px; }
.avatar-md  { width: 48px; height: 48px; }
.avatar-lg  { width: 64px; height: 64px; }
.avatar-xl  { width: 96px; height: 96px; border: 3px solid #fff; box-shadow: var(--shadow-md); }

/* 8. CARD */
.card {
  background: var(--color-bg-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-5);
}
.card-hover { transition: box-shadow var(--transition-fast), transform var(--transition-fast); }
.card-hover:hover { box-shadow: var(--shadow-md); transform: translateY(-1px); }

/* 9. FORM */
.form-group { margin-bottom: var(--space-5); }
.form-label { display: block; font-size: var(--font-size-sm); font-weight: var(--font-weight-semibold); color: var(--color-text-secondary); margin-bottom: var(--space-2); }
.form-label .required { color: var(--color-danger); margin-left: 2px; }
.form-control {
  display: block; width: 100%; padding: 10px 14px;
  font-size: var(--font-size-base);
  border: 1.5px solid var(--color-border);
  border-radius: var(--radius-md);
  background: var(--color-bg-white);
  color: var(--color-text-primary);
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
  appearance: none; -webkit-appearance: none;
}
.form-control:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(26,127,90,0.12);
}
.form-control::placeholder { color: var(--color-text-light); }
.form-control.error { border-color: var(--color-danger); }
.form-error { font-size: var(--font-size-xs); color: var(--color-danger); margin-top: var(--space-1); }
textarea.form-control { resize: vertical; min-height: 100px; }
select.form-control { background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath d='M1 1l5 5 5-5' stroke='%23718096' stroke-width='1.5' fill='none' stroke-linecap='round'/%3E%3C/svg%3E"); background-repeat: no-repeat; background-position: right 12px center; padding-right: 36px; }

/* 10. LOADING / SKELETON */
.skeleton {
  background: linear-gradient(90deg, var(--color-bg-gray) 25%, var(--color-border) 50%, var(--color-bg-gray) 75%);
  background-size: 200% 100%;
  animation: skeleton-loading 1.5s infinite;
  border-radius: var(--radius-md);
}
@keyframes skeleton-loading { 0% { background-position: 200% 0; } 100% { background-position: -200% 0; } }

.spinner {
  width: 24px; height: 24px;
  border: 3px solid var(--color-border);
  border-top-color: var(--color-primary);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }

/* 11. TOAST NOTIFICATIONS */
.toast {
  position: fixed;
  bottom: 80px; left: 50%;
  transform: translateX(-50%) translateY(20px);
  background: #1a1a2e;
  color: #fff;
  padding: 12px 20px;
  border-radius: var(--radius-full);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  z-index: var(--z-toast);
  opacity: 0;
  transition: opacity 0.3s, transform 0.3s;
  white-space: nowrap;
  box-shadow: 0 4px 12px rgba(0,0,0,0.25);
  pointer-events: none;
  max-width: 90vw;
}
.toast.show { opacity: 1; transform: translateX(-50%) translateY(0); }
.toast.toast-success { background: var(--color-verified); }
.toast.toast-error   { background: var(--color-danger); }
.toast.toast-info    { background: var(--color-info); }
.toast.toast-warning { background: var(--color-warning); }

/* 12. EMPTY STATE */
.empty-state {
  padding: 48px 24px;
  text-align: center;
  color: var(--color-text-muted);
}
.empty-state .empty-icon { font-size: 48px; margin-bottom: 12px; }
.empty-state .empty-title { font-size: var(--font-size-lg); font-weight: var(--font-weight-semibold); color: var(--color-text-primary); margin-bottom: 8px; }
.empty-state .empty-desc  { font-size: var(--font-size-sm); line-height: var(--line-height-relaxed); }

/* 13. PAGE STATES */
.page-loading {
  min-height: 40vh;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  gap: 16px;
  color: var(--color-text-muted);
}
.page-error {
  min-height: 40vh;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  gap: 12px;
  text-align: center;
  padding: 32px;
}

/* 14. DIVIDER */
.divider { height: 1px; background: var(--color-border); margin: var(--space-4) 0; }

/* 15. SCROLLBAR (webkit) */
::-webkit-scrollbar { width: 6px; height: 6px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--color-border-dark); border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: var(--color-text-light); }