/* ============================================================================
   LIFEINTRAAI RESPONSIVE DESIGN FRAMEWORK
   ============================================================================
   Mobile-First Approach with Flexible Sizing
   
   Breakpoints:
   - Mobile:  320px - 479px (phones)
   - Tablet:  480px - 1023px (tablets)
   - Desktop: 1024px+ (desktops)
   
   Font Scaling:
   - Mobile:  16px base (1rem = 16px)
   - Tablet:  17px base (better readability)
   - Desktop: 18px base (1rem = 18px)
   
   ============================================================================ */

/* ============================================================================
   ROOT VARIABLES - Flexible & Scalable
   ============================================================================ */
:root {
  /* MOBILE BASE (320px - 479px) */
  font-size: 16px;
  
  /* Spacing - Use rem throughout (scales with font-size) */
  --spacing-xs: 0.25rem;     /* 4px @ 16px base */
  --spacing-sm: 0.5rem;      /* 8px @ 16px base */
  --spacing-md: 1rem;        /* 16px @ 16px base */
  --spacing-lg: 1.5rem;      /* 24px @ 16px base */
  --spacing-xl: 2rem;        /* 32px @ 16px base */
  --spacing-2xl: 2.5rem;     /* 40px @ 16px base */
  --spacing-3xl: 3rem;       /* 48px @ 16px base */

  /* Layout - Responsive units */
  --sidebar-width-mobile: 100%;        /* Full width, hidden by default */
  --sidebar-width-tablet: 250px;       /* Narrower on tablet */
  --sidebar-width-desktop: 270px;      /* Original on desktop */
  
  --content-padding-mobile: var(--spacing-md);      /* 16px */
  --content-padding-tablet: var(--spacing-lg);      /* 24px */
  --content-padding-desktop: var(--spacing-2xl);    /* 40px */
  
  --main-margin-mobile: 0;                          /* No margin on mobile */
  --main-margin-tablet: 250px;                      /* Sidebar width on tablet */
  --main-margin-desktop: 270px;                     /* Sidebar width on desktop */

  /* Typography - Scalable */
  --font-size-xs: 0.75rem;
  --font-size-sm: 0.85rem;
  --font-size-base: 0.95rem;
  --font-size-lg: 1.1rem;
  --font-size-xl: 1.4rem;
  --font-size-2xl: 1.8rem;
  --font-size-3xl: 2.2rem;
  --font-size-4xl: 2.8rem;

  /* Borders & Radius - Slightly larger on mobile for touch */
  --border-radius-sm: 8px;
  --border-radius-md: 12px;
  --border-radius-lg: 18px;

  /* Grid columns - Responsive */
  --grid-cols-mobile: 1fr;                    /* 1 column on mobile */
  --grid-cols-tablet: repeat(2, 1fr);         /* 2 columns on tablet */
  --grid-cols-desktop: repeat(auto-fit, minmax(200px, 1fr));  /* 3-4+ on desktop */

  /* Button sizing */
  --btn-height-mobile: 44px;  /* Touch-friendly minimum */
  --btn-height-tablet: 44px;
  --btn-height-desktop: 40px;

  /* Minimum touch target size */
  --touch-target: 44px;

  /* Table responsive */
  --table-font-mobile: 0.85rem;
  --table-font-tablet: 0.9rem;
  --table-font-desktop: 0.95rem;
}

/* TABLET (480px - 1023px) */
@media (min-width: 480px) {
  :root {
    font-size: 17px;
    
    --sidebar-width-tablet: 250px;
    --content-padding-tablet: var(--spacing-lg);
    --main-margin-tablet: 250px;
    
    --font-size-3xl: 2.4rem;
    --font-size-4xl: 3rem;
  }
}

/* DESKTOP (1024px and up) */
@media (min-width: 1024px) {
  :root {
    font-size: 18px;
    
    --sidebar-width-desktop: 270px;
    --content-padding-desktop: var(--spacing-3xl);
    --main-margin-desktop: 270px;
    
    --font-size-3xl: 2.2rem;
    --font-size-4xl: 2.8rem;
  }
}

/* ============================================================================
   GLOBAL RESET & BASE STYLES
   ============================================================================ */
*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  font-family: 'Plus Jakarta Sans', system-ui, -apple-system, sans-serif;
  display: flex;
  flex-direction: column;
  min-height: 100vh;
  overflow-x: hidden;
}

/* ============================================================================
   SIDEBAR - Responsive Drawer
   ============================================================================ */
#sidebar {
  position: fixed;
  top: 0;
  left: 0;
  width: var(--sidebar-width-mobile);
  height: 100vh;
  padding: var(--spacing-lg) var(--spacing-md);
  display: flex;
  flex-direction: column;
  gap: var(--spacing-lg);
  z-index: 999;
  transition: transform 0.3s ease;
  
  /* Mobile: hidden by default (drawer style) */
  transform: translateX(-100%);
  max-width: 280px;
  
  /* Enable scrolling in sidebar */
  overflow-y: auto;
  overflow-x: hidden;
}

/* Tablet and above: visible sidebar */
@media (min-width: 1024px) {
  #sidebar {
    position: fixed;
    width: var(--sidebar-width-desktop);
    max-width: none;
    transform: translateX(0);
  }
}

/* Show sidebar when toggled */
#sidebar.show {
  transform: translateX(0);
}

#sidebar h2 {
  font-size: var(--font-size-xl);
  line-height: 1.1;
}

#sidebar p {
  font-size: var(--font-size-xs);
}

/* ============================================================================
   HAMBURGER MENU (mobile only)
   ============================================================================ */
#hamburger {
  display: flex;
  cursor: pointer;
  gap: var(--spacing-sm);
  flex-direction: column;
  justify-content: center;
  width: var(--touch-target);
  height: var(--touch-target);
  min-width: var(--touch-target);
  min-height: var(--touch-target);
  border-radius: var(--border-radius-md);
  border: none;
  background: transparent;
  transition: 0.3s ease;
  z-index: 1000;
}

@media (min-width: 1024px) {
  #hamburger {
    display: none;
  }
}

#hamburger span {
  width: 24px;
  height: 2px;
  background: currentColor;
  transition: 0.3s ease;
  transform-origin: center;
}

#hamburger.active span:nth-child(1) {
  transform: rotate(45deg) translateY(8px);
}

#hamburger.active span:nth-child(2) {
  opacity: 0;
}

#hamburger.active span:nth-child(3) {
  transform: rotate(-45deg) translateY(-8px);
}

/* Mobile overlay when sidebar is open */
@media (max-width: 1023px) {
  #sidebar.show::before {
    content: '';
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.5);
    z-index: -1;
  }
}

/* ============================================================================
   MAIN CONTENT AREA - Responsive Margins
   ============================================================================ */
#content {
  margin-left: var(--main-margin-mobile);
  padding: var(--content-padding-mobile);
  flex: 1;
  min-height: calc(100vh - 60px);
  overflow-y: auto;
  transition: margin-left 0.3s ease;
  width: 100%;
}

@media (min-width: 480px) {
  #content {
    padding: var(--content-padding-tablet);
  }
}

@media (min-width: 1024px) {
  #content {
    margin-left: var(--main-margin-desktop);
    padding: var(--content-padding-desktop);
  }
}

/* ============================================================================
   HEADINGS - Responsive Font Sizes
   ============================================================================ */
h1 {
  font-size: var(--font-size-2xl);
  margin-bottom: var(--spacing-lg);
  line-height: 1.2;
  word-break: break-word;
}

@media (min-width: 768px) {
  h1 {
    font-size: var(--font-size-3xl);
  }
}

@media (min-width: 1024px) {
  h1 {
    font-size: var(--font-size-4xl);
  }
}

h2 {
  font-size: var(--font-size-xl);
  margin-bottom: var(--spacing-lg);
  line-height: 1.3;
}

@media (min-width: 768px) {
  h2 {
    font-size: var(--font-size-2xl);
  }
}

h3 {
  font-size: var(--font-size-lg);
  margin-bottom: var(--spacing-md);
}

p {
  font-size: var(--font-size-base);
  line-height: 1.6;
  margin-bottom: var(--spacing-md);
}

/* ============================================================================
   CARDS & GLASS-MORPHISM - Responsive Padding
   ============================================================================ */
.glass-card,
.card {
  padding: var(--spacing-lg);
  margin-bottom: var(--spacing-lg);
  border-radius: var(--border-radius-md);
  transition: transform 0.2s ease;
}

@media (min-width: 768px) {
  .glass-card,
  .card {
    padding: var(--spacing-xl);
    margin-bottom: var(--spacing-xl);
  }
}

.glass-card:hover,
.card:hover {
  transform: translateY(-2px);
}

/* ============================================================================
   GRIDS - Mobile First (1 column → multi-column)
   ============================================================================ */
.stats-grid,
.card-grid,
.vitals-grid {
  display: grid;
  gap: var(--spacing-md);
  margin-bottom: var(--spacing-lg);
}

/* Mobile: 1 column */
.stats-grid {
  grid-template-columns: 1fr;
}

@media (min-width: 480px) {
  .stats-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 768px) {
  .stats-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

@media (min-width: 1024px) {
  .stats-grid {
    grid-template-columns: repeat(4, 1fr);
    gap: var(--spacing-lg);
  }
}

/* Vitals Grid - Similar responsive */
.vitals-grid {
  grid-template-columns: repeat(auto-fit, minmax(100px, 1fr));
}

@media (min-width: 768px) {
  .vitals-grid {
    grid-template-columns: repeat(auto-fit, minmax(130px, 1fr));
  }
}

/* Card Grid */
.card-grid {
  grid-template-columns: 1fr;
}

@media (min-width: 768px) {
  .card-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1024px) {
  .card-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

/* ============================================================================
   TABLES - Responsive (Stack on mobile, scroll on tablet+)
   ============================================================================ */
table,
.table {
  width: 100%;
  border-collapse: collapse;
  margin-top: var(--spacing-md);
  border-radius: var(--border-radius-md);
  overflow: hidden;
  font-size: var(--font-size-sm);
}

@media (min-width: 768px) {
  table,
  .table {
    font-size: var(--font-size-base);
  }
}

th,
td {
  padding: var(--spacing-sm) var(--spacing-md);
  text-align: left;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

@media (min-width: 768px) {
  th,
  td {
    padding: var(--spacing-md) var(--spacing-lg);
  }
}

th {
  font-weight: 700;
  font-size: var(--font-size-xs);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

/* Responsive table wrapper (horizontal scroll on mobile) */
.table-wrapper {
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  border-radius: var(--border-radius-md);
}

@media (min-width: 1024px) {
  .table-wrapper {
    overflow-x: visible;
  }
}

/* Hide columns on mobile, show on tablet+ */
@media (max-width: 479px) {
  th:nth-child(n+4),
  td:nth-child(n+4) {
    display: none;
  }
}

/* ============================================================================
   FORMS - Responsive Sizing
   ============================================================================ */
input[type="text"],
input[type="email"],
input[type="password"],
input[type="date"],
input[type="number"],
select,
textarea {
  width: 100%;
  max-width: 100%;
  padding: var(--spacing-sm) var(--spacing-md);
  margin-bottom: var(--spacing-md);
  border-radius: var(--border-radius-sm);
  font-size: var(--font-size-base);
  border: 1px solid rgba(255, 255, 255, 0.1);
  transition: 0.2s ease;
  font-family: inherit;
}

input:focus,
select:focus,
textarea:focus {
  outline: none;
  border-color: rgba(59, 130, 246, 0.5);
  box-shadow: 0 0 10px rgba(59, 130, 246, 0.3);
}

/* Form groups - responsive margin */
.form-group {
  margin-bottom: var(--spacing-lg);
}

label {
  display: block;
  font-size: var(--font-size-sm);
  font-weight: 600;
  margin-bottom: var(--spacing-xs);
}

/* ============================================================================
   BUTTONS - Touch-Friendly Sizing
   ============================================================================ */
.btn,
button,
.btn-primary,
.btn-secondary,
.btn-outline {
  min-height: var(--touch-target);
  min-width: var(--touch-target);
  padding: var(--spacing-sm) var(--spacing-lg);
  font-size: var(--font-size-sm);
  border-radius: var(--border-radius-sm);
  border: none;
  cursor: pointer;
  transition: 0.2s ease;
  font-weight: 600;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-sm);
  white-space: nowrap;
}

@media (min-width: 768px) {
  .btn,
  button {
    font-size: var(--font-size-base);
    min-height: 40px;
  }
}

/* Full-width buttons on mobile */
.btn-block,
.btn.block {
  width: 100%;
  display: flex;
}

@media (min-width: 768px) {
  .btn-block,
  .btn.block {
    width: auto;
  }
}

/* Button states */
.btn:hover,
button:hover {
  opacity: 0.9;
  transform: translateY(-1px);
}

.btn:disabled,
button:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

/* ============================================================================
   MODALS - Responsive Width & Padding
   ============================================================================ */
.modal-overlay {
  position: fixed;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 2000;
  padding: var(--spacing-md);
}

.modal {
  width: 100%;
  max-width: 400px;
  max-height: 90vh;
  overflow-y: auto;
  border-radius: var(--border-radius-md);
  padding: var(--spacing-lg);
}

@media (min-width: 480px) {
  .modal {
    max-width: 500px;
    padding: var(--spacing-xl);
  }
}

@media (min-width: 768px) {
  .modal {
    max-width: 600px;
  }
}

/* ============================================================================
   NAVIGATION - Responsive Layout
   ============================================================================ */
nav {
  display: flex;
  gap: var(--spacing-md);
  flex-wrap: wrap;
}

nav a,
nav button {
  font-size: var(--font-size-sm);
  padding: var(--spacing-sm) var(--spacing-lg);
  white-space: nowrap;
}

@media (min-width: 768px) {
  nav a,
  nav button {
    font-size: var(--font-size-base);
    padding: var(--spacing-md) var(--spacing-xl);
  }
}

/* ============================================================================
   FLEX CONTAINERS - Responsive Wrapping
   ============================================================================ */
.flex-row {
  display: flex;
  flex-direction: row;
  gap: var(--spacing-md);
  flex-wrap: wrap;
}

@media (min-width: 768px) {
  .flex-row {
    gap: var(--spacing-lg);
  }
}

.flex-col {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-md);
}

/* ============================================================================
   TOPBAR / HEADER - Responsive
   ============================================================================ */
.topbar,
header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--spacing-md);
  gap: var(--spacing-md);
  flex-wrap: wrap;
  min-height: 60px;
}

@media (min-width: 768px) {
  .topbar,
  header {
    padding: var(--spacing-lg);
    min-height: 70px;
  }
}

.topbar-left,
.topbar-right {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
}

@media (min-width: 768px) {
  .topbar-left,
  .topbar-right {
    gap: var(--spacing-md);
  }
}

/* ============================================================================
   CHAT INTERFACE - Responsive
   ============================================================================ */
.chat-window {
  display: flex;
  flex-direction: column;
  height: 50vh;
  border-radius: var(--border-radius-md);
  overflow: hidden;
}

@media (min-width: 768px) {
  .chat-window {
    height: 70vh;
  }
}

.chat-messages {
  flex: 1;
  padding: var(--spacing-md);
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  gap: var(--spacing-md);
}

@media (min-width: 768px) {
  .chat-messages {
    padding: var(--spacing-lg);
    gap: var(--spacing-lg);
  }
}

.bubble {
  max-width: 90%;
  padding: var(--spacing-sm) var(--spacing-md);
  border-radius: var(--border-radius-md);
  font-size: var(--font-size-sm);
  line-height: 1.5;
  word-wrap: break-word;
  word-break: break-word;
}

@media (min-width: 768px) {
  .bubble {
    max-width: 65%;
    padding: var(--spacing-md) var(--spacing-lg);
    font-size: var(--font-size-base);
  }
}

.bubble.doctor {
  margin-left: auto;
}

.bubble.nurse,
.bubble.family {
  margin-right: auto;
}

.chat-input {
  display: flex;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  gap: var(--spacing-sm);
}

.chat-input input {
  flex: 1;
  padding: var(--spacing-sm);
  border: none;
  font-size: var(--font-size-sm);
}

@media (min-width: 768px) {
  .chat-input input {
    padding: var(--spacing-md);
    font-size: var(--font-size-base);
  }
}

.chat-input button {
  min-width: 44px;
  min-height: 44px;
  padding: 0 var(--spacing-lg);
  font-size: var(--font-size-sm);
}

/* ============================================================================
   UTILITY CLASSES - Responsive Display
   ============================================================================ */
.hide-mobile {
  display: none !important;
}

@media (min-width: 768px) {
  .hide-mobile {
    display: block !important;
  }
}

.hide-tablet {
  display: none !important;
}

@media (max-width: 1023px) {
  .hide-tablet {
    display: block !important;
  }
}

.hide-desktop {
  display: none !important;
}

@media (min-width: 1024px) {
  .hide-desktop {
    display: block !important;
  }
}

/* Container widths */
.container {
  width: 100%;
  margin: 0 auto;
  padding: 0 var(--spacing-md);
}

@media (min-width: 768px) {
  .container {
    padding: 0 var(--spacing-lg);
  }
}

@media (min-width: 1024px) {
  .container {
    max-width: 1200px;
    padding: 0 var(--spacing-2xl);
  }
}

/* ============================================================================
   SCROLLBAR - Responsive
   ============================================================================ */
::-webkit-scrollbar {
  width: 8px;
  height: 8px;
}

::-webkit-scrollbar-track {
  background: rgba(255, 255, 255, 0.05);
  border-radius: 4px;
}

::-webkit-scrollbar-thumb {
  background: rgba(255, 255, 255, 0.25);
  border-radius: 4px;
  transition: all 0.3s ease;
}

::-webkit-scrollbar-thumb:hover {
  background: rgba(59, 130, 246, 0.7);
  width: 10px;
}

/* ============================================================================
   ZOOM & SCALING FIX
   ============================================================================ */
/* Ensure inputs don't zoom on iOS when focused */
@media (max-width: 767px) {
  input[type="text"],
  input[type="email"],
  input[type="password"],
  input[type="date"],
  input[type="number"],
  select,
  textarea {
    font-size: 16px; /* Prevents iOS zoom */
  }
}

/* ============================================================================
   PRINT STYLES
   ============================================================================ */
@media print {
  #sidebar,
  #hamburger,
  .no-print {
    display: none !important;
  }
  
  #content {
    margin-left: 0;
    padding: var(--spacing-lg);
  }
}