/* ============================================
   MEDHYA DESIGN SYSTEM
   Warm & Human Healthcare Design
   ============================================ */

/* ============================================
   1. CSS CUSTOM PROPERTIES (Design Tokens)
   ============================================ */

:root {
  /* === Typography === */
  --font-display: 'Fraunces', Georgia, serif;
  --font-body: 'DM Sans', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', monospace;

  /* Font Sizes - Fluid Scale */
  --text-xs: 0.75rem;      /* 12px */
  --text-sm: 0.875rem;     /* 14px */
  --text-base: 1rem;       /* 16px */
  --text-lg: 1.125rem;     /* 18px */
  --text-xl: 1.25rem;      /* 20px */
  --text-2xl: 1.5rem;      /* 24px */
  --text-3xl: 1.875rem;    /* 30px */
  --text-4xl: 2.25rem;     /* 36px */
  --text-5xl: 3rem;        /* 48px */
  --text-6xl: 3.75rem;     /* 60px */
  --text-7xl: 4.5rem;      /* 72px */

  /* Font Weights */
  --font-normal: 400;
  --font-medium: 500;
  --font-semibold: 600;
  --font-bold: 700;

  /* Line Heights */
  --leading-none: 1;
  --leading-tight: 1.25;
  --leading-snug: 1.375;
  --leading-normal: 1.5;
  --leading-relaxed: 1.625;

  /* === Colors - Light Mode === */

  /* Backgrounds */
  --color-bg: #FFFBF7;
  --color-bg-alt: #FEF7F0;
  --color-surface: #FFFFFF;
  --color-surface-hover: #FEFCFA;
  --color-surface-elevated: #FFFFFF;

  /* Text */
  --color-text: #2D2A24;
  --color-text-secondary: #6B6560;
  --color-text-muted: #9B9590;
  --color-text-inverse: #FFFFFF;

  /* Primary - Terracotta */
  --color-primary: #C17F59;
  --color-primary-light: #E8C4B0;
  --color-primary-lighter: #F5E6DC;
  --color-primary-dark: #9A6244;
  --color-primary-darker: #7A4E36;

  /* Secondary - Sage Green */
  --color-secondary: #7B9E87;
  --color-secondary-light: #B5D4BF;
  --color-secondary-lighter: #E3F0E7;
  --color-secondary-dark: #5A7A64;
  --color-secondary-darker: #456350;

  /* Accent - Amber */
  --color-accent: #D4A574;
  --color-accent-light: #EDD5BC;
  --color-accent-lighter: #F9EFE4;
  --color-accent-dark: #B8865A;

  /* Semantic Colors */
  --color-success: #7B9E87;
  --color-success-light: #E3F0E7;
  --color-warning: #D4A574;
  --color-warning-light: #F9EFE4;
  --color-error: #C75D5D;
  --color-error-light: #FBEAEA;
  --color-info: #7A9AAF;
  --color-info-light: #E8F0F5;

  /* Borders */
  --color-border: rgba(45, 42, 36, 0.1);
  --color-border-light: rgba(45, 42, 36, 0.06);
  --color-border-focus: var(--color-primary);

  /* === Shadows (Warm tint) === */
  --shadow-xs: 0 1px 2px rgba(45, 42, 36, 0.04);
  --shadow-sm: 0 1px 3px rgba(45, 42, 36, 0.06), 0 1px 2px rgba(45, 42, 36, 0.04);
  --shadow-md: 0 4px 6px rgba(45, 42, 36, 0.05), 0 2px 4px rgba(45, 42, 36, 0.04);
  --shadow-lg: 0 10px 15px rgba(45, 42, 36, 0.06), 0 4px 6px rgba(45, 42, 36, 0.04);
  --shadow-xl: 0 20px 25px rgba(45, 42, 36, 0.08), 0 10px 10px rgba(45, 42, 36, 0.04);
  --shadow-2xl: 0 25px 50px rgba(45, 42, 36, 0.12);

  /* Colored shadows for buttons */
  --shadow-primary: 0 4px 14px rgba(193, 127, 89, 0.3);
  --shadow-primary-lg: 0 8px 20px rgba(193, 127, 89, 0.35);
  --shadow-secondary: 0 4px 14px rgba(123, 158, 135, 0.3);
  --shadow-accent: 0 4px 14px rgba(212, 165, 116, 0.3);

  /* === Spacing === */
  --space-0: 0;
  --space-1: 0.25rem;   /* 4px */
  --space-2: 0.5rem;    /* 8px */
  --space-3: 0.75rem;   /* 12px */
  --space-4: 1rem;      /* 16px */
  --space-5: 1.25rem;   /* 20px */
  --space-6: 1.5rem;    /* 24px */
  --space-8: 2rem;      /* 32px */
  --space-10: 2.5rem;   /* 40px */
  --space-12: 3rem;     /* 48px */
  --space-16: 4rem;     /* 64px */
  --space-20: 5rem;     /* 80px */
  --space-24: 6rem;     /* 96px */

  /* === Border Radius === */
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 14px;
  --radius-xl: 18px;
  --radius-2xl: 24px;
  --radius-full: 9999px;

  /* Organic/Asymmetric radius */
  --radius-organic: 16px 16px 24px 16px;
  --radius-organic-alt: 24px 16px 16px 16px;
  --radius-blob: 60% 40% 50% 50% / 50% 50% 40% 60%;

  /* === Transitions === */
  --ease-default: cubic-bezier(0.4, 0, 0.2, 1);
  --ease-in: cubic-bezier(0.4, 0, 1, 1);
  --ease-out: cubic-bezier(0, 0, 0.2, 1);
  --ease-bounce: cubic-bezier(0.34, 1.56, 0.64, 1);
  --ease-spring: cubic-bezier(0.175, 0.885, 0.32, 1.275);

  --duration-fast: 150ms;
  --duration-normal: 200ms;
  --duration-slow: 300ms;
  --duration-slower: 500ms;

  /* === Z-Index Scale === */
  --z-base: 0;
  --z-dropdown: 100;
  --z-sticky: 200;
  --z-overlay: 300;
  --z-modal: 400;
  --z-toast: 500;
  --z-tooltip: 600;

  /* === Layout === */
  --sidebar-width: 280px;
  --header-height: 64px;
  --container-max: 1280px;
}

/* ============================================
   2. DARK MODE VARIABLES
   ============================================ */

[data-theme="dark"] {
  /* Backgrounds - Warm dark, not cold */
  --color-bg: #1C1A18;
  --color-bg-alt: #222018;
  --color-surface: #252320;
  --color-surface-hover: #2E2B28;
  --color-surface-elevated: #302D2A;

  /* Text */
  --color-text: #F5F1EB;
  --color-text-secondary: #B5AFA8;
  --color-text-muted: #7A756E;
  --color-text-inverse: #1C1A18;

  /* Adjusted colors for dark mode */
  --color-primary: #D4966E;
  --color-primary-light: #3D3028;
  --color-primary-lighter: #2D2520;
  --color-primary-dark: #E8B08A;

  --color-secondary: #8FB59A;
  --color-secondary-light: #2A3530;
  --color-secondary-lighter: #222B26;
  --color-secondary-dark: #A5CDB0;

  --color-accent: #E0B68A;
  --color-accent-light: #3A3025;
  --color-accent-lighter: #2D2820;

  /* Semantic - Adjusted for dark */
  --color-success: #8FB59A;
  --color-success-light: #2A3530;
  --color-warning: #E0B68A;
  --color-warning-light: #3A3025;
  --color-error: #D47A7A;
  --color-error-light: #3A2828;
  --color-info: #8AACBF;
  --color-info-light: #28323A;

  /* Borders */
  --color-border: rgba(245, 241, 235, 0.1);
  --color-border-light: rgba(245, 241, 235, 0.06);

  /* Shadows - Darker */
  --shadow-xs: 0 1px 2px rgba(0, 0, 0, 0.2);
  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.25), 0 1px 2px rgba(0, 0, 0, 0.2);
  --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.25), 0 2px 4px rgba(0, 0, 0, 0.2);
  --shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.3), 0 4px 6px rgba(0, 0, 0, 0.2);
  --shadow-xl: 0 20px 25px rgba(0, 0, 0, 0.35), 0 10px 10px rgba(0, 0, 0, 0.2);

  --shadow-primary: 0 4px 14px rgba(212, 150, 110, 0.2);
  --shadow-primary-lg: 0 8px 20px rgba(212, 150, 110, 0.25);
}

/* ============================================
   3. BASE STYLES
   ============================================ */

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-body);
  font-size: var(--text-base);
  line-height: var(--leading-normal);
  color: var(--color-text);
  background-color: var(--color-bg);
  margin: 0;
  padding: 0;
  transition: background-color var(--duration-slow) var(--ease-default),
              color var(--duration-slow) var(--ease-default);
}

/* Warm background texture overlay */
body::before {
  content: '';
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  opacity: 0.3;
  z-index: -1;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noise'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.8' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noise)'/%3E%3C/svg%3E");
}

[data-theme="dark"] body::before {
  opacity: 0.15;
}

/* ============================================
   4. TYPOGRAPHY STYLES
   ============================================ */

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-display);
  font-weight: var(--font-semibold);
  line-height: var(--leading-tight);
  color: var(--color-text);
  margin: 0;
}

h1, .h1 {
  font-size: var(--text-4xl);
  font-weight: var(--font-bold);
  letter-spacing: -0.02em;
}

h2, .h2 {
  font-size: var(--text-3xl);
  letter-spacing: -0.01em;
}

h3, .h3 {
  font-size: var(--text-2xl);
}

h4, .h4 {
  font-size: var(--text-xl);
}

h5, .h5 {
  font-size: var(--text-lg);
}

h6, .h6 {
  font-size: var(--text-base);
}

p {
  margin: 0;
  color: var(--color-text-secondary);
}

a {
  color: var(--color-primary);
  text-decoration: none;
  transition: color var(--duration-fast) var(--ease-default);
}

a:hover {
  color: var(--color-primary-dark);
}

/* Display text - Extra large headings */
.text-display {
  font-family: var(--font-display);
  font-size: clamp(2.5rem, 5vw, 4.5rem);
  font-weight: var(--font-bold);
  line-height: 1.1;
  letter-spacing: -0.03em;
}

/* Gradient text */
.text-gradient {
  background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.text-gradient-sage {
  background: linear-gradient(135deg, var(--color-secondary), var(--color-secondary-dark));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* ============================================
   5. UTILITY CLASSES
   ============================================ */

/* Text colors */
.text-primary { color: var(--color-primary); }
.text-secondary { color: var(--color-secondary); }
.text-accent { color: var(--color-accent); }
.text-muted { color: var(--color-text-muted); }
.text-success { color: var(--color-success); }
.text-warning { color: var(--color-warning); }
.text-error { color: var(--color-error); }

/* Background colors */
.bg-surface { background-color: var(--color-surface); }
.bg-elevated { background-color: var(--color-surface-elevated); }
.bg-primary { background-color: var(--color-primary); }
.bg-primary-light { background-color: var(--color-primary-lighter); }
.bg-secondary { background-color: var(--color-secondary); }
.bg-secondary-light { background-color: var(--color-secondary-lighter); }
.bg-accent { background-color: var(--color-accent); }
.bg-accent-light { background-color: var(--color-accent-lighter); }

/* Warm gradients */
.bg-gradient-warm {
  background: linear-gradient(135deg, var(--color-bg) 0%, var(--color-bg-alt) 100%);
}

.bg-gradient-primary {
  background: linear-gradient(135deg, var(--color-primary-lighter) 0%, var(--color-accent-lighter) 100%);
}

.bg-gradient-sage {
  background: linear-gradient(135deg, var(--color-secondary-lighter) 0%, var(--color-bg) 100%);
}

/* Decorative blob backgrounds */
.bg-blob-primary {
  background: radial-gradient(ellipse at 30% 20%, var(--color-primary-lighter) 0%, transparent 50%),
              radial-gradient(ellipse at 70% 80%, var(--color-accent-lighter) 0%, transparent 50%);
}

.bg-blob-sage {
  background: radial-gradient(ellipse at 20% 80%, var(--color-secondary-lighter) 0%, transparent 50%),
              radial-gradient(ellipse at 80% 20%, var(--color-primary-lighter) 0%, transparent 50%);
}

/* Border radius utilities */
.rounded-organic { border-radius: var(--radius-organic); }
.rounded-organic-alt { border-radius: var(--radius-organic-alt); }

/* Focus ring */
.focus-ring:focus {
  outline: none;
  box-shadow: 0 0 0 3px var(--color-primary-light);
}

.focus-ring:focus-visible {
  outline: none;
  box-shadow: 0 0 0 3px var(--color-primary-light);
}

/* Selection */
::selection {
  background-color: var(--color-primary-light);
  color: var(--color-text);
}

/* Scrollbar styling */
::-webkit-scrollbar {
  width: 8px;
  height: 8px;
}

::-webkit-scrollbar-track {
  background: var(--color-bg-alt);
  border-radius: var(--radius-full);
}

::-webkit-scrollbar-thumb {
  background: var(--color-border);
  border-radius: var(--radius-full);
}

::-webkit-scrollbar-thumb:hover {
  background: var(--color-text-muted);
}

/* ============================================
   6. LAYOUT UTILITIES
   ============================================ */

.container {
  width: 100%;
  max-width: var(--container-max);
  margin-left: auto;
  margin-right: auto;
  padding-left: var(--space-4);
  padding-right: var(--space-4);
}

@media (min-width: 768px) {
  .container {
    padding-left: var(--space-6);
    padding-right: var(--space-6);
  }
}

/* Main content area (with sidebar) */
.main-content-area {
  margin-left: var(--sidebar-width);
  min-height: 100vh;
  transition: margin-left var(--duration-normal) var(--ease-default);
}

@media (max-width: 1023px) {
  .main-content-area {
    margin-left: 0;
  }
}