/* ============================================
   CSS VARIABLES - Premium Figma-Quality Design
   ============================================ */

:root {
    /* Primary Colors - Clean Medical Blue */
    --primary-50: #f0f9ff;
    --primary-100: #e0f2fe;
    --primary-200: #bae6fd;
    --primary-300: #7dd3fc;
    --primary-400: #38bdf8;
    --primary-500: #0ea5e9;
    --primary-600: #0284c7;
    --primary-700: #0369a1;
    --primary-800: #075985;
    --primary-900: #0c4a6e;
    
    /* Accent - Cyan for highlights */
    --accent-400: #22d3ee;
    --accent-500: #06b6d4;
    --accent-600: #0891b2;
    
    /* Semantic Colors */
    --success: #22c55e;
    --success-light: rgba(34, 197, 94, 0.1);
    --warning: #f59e0b;
    --warning-light: rgba(245, 158, 11, 0.1);
    --error: #ef4444;
    --error-light: rgba(239, 68, 68, 0.1);
    --info: #0ea5e9;
    --info-light: rgba(14, 165, 233, 0.1);
    
    /* Typography */
    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'SF Pro Display', 'Segoe UI', sans-serif;
    --font-family-ar: 'Tajawal', 'SF Pro Arabic', -apple-system, sans-serif;
    
    /* Font Sizes - Tighter for mobile */
    --font-size-xs: 0.6875rem;   /* 11px */
    --font-size-sm: 0.8125rem;   /* 13px */
    --font-size-base: 0.9375rem; /* 15px */
    --font-size-lg: 1.0625rem;   /* 17px */
    --font-size-xl: 1.25rem;     /* 20px */
    --font-size-2xl: 1.5rem;     /* 24px */
    --font-size-3xl: 1.875rem;   /* 30px */
    --font-size-4xl: 2.25rem;    /* 36px */
    
    /* Spacing - Tighter, more compact */
    --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 */
    
    /* Border Radius - Rounded but not too much */
    --radius-sm: 0.375rem;  /* 6px */
    --radius-md: 0.5rem;    /* 8px */
    --radius-lg: 0.75rem;   /* 12px */
    --radius-xl: 1rem;      /* 16px */
    --radius-2xl: 1.25rem;  /* 20px */
    --radius-full: 9999px;
    
    /* Transitions */
    --transition-fast: 120ms ease-out;
    --transition-base: 200ms ease-out;
    --transition-slow: 300ms ease-out;
    
    /* Z-Index */
    --z-dropdown: 100;
    --z-sticky: 150;
    --z-modal: 200;
    --z-toast: 300;
    
    /* Safe Area */
    --safe-top: env(safe-area-inset-top, 0px);
    --safe-bottom: env(safe-area-inset-bottom, 0px);
    --safe-left: env(safe-area-inset-left, 0px);
    --safe-right: env(safe-area-inset-right, 0px);
    
    /* Header/Nav Heights */
    --header-height: 56px;
    --bottom-nav-height: 56px;
}

/* ============================================
   DARK THEME (DEFAULT) - Premium Dark
   ============================================ */
:root,
[data-theme="dark"] {
    /* Backgrounds - Deep, rich, professional */
    --bg-base: #0a0f1a;
    --bg-primary: #0f1629;
    --bg-secondary: #151d30;
    --bg-tertiary: #1a2438;
    --bg-elevated: #1f2940;
    --bg-card: #151d30;
    --bg-input: #1a2438;
    --bg-hover: rgba(255, 255, 255, 0.04);
    --bg-active: rgba(255, 255, 255, 0.08);
    
    /* Text */
    --text-primary: #ffffff;
    --text-secondary: #94a3b8;
    --text-tertiary: #64748b;
    --text-muted: #475569;
    
    /* Borders */
    --border-color: rgba(148, 163, 184, 0.12);
    --border-hover: rgba(148, 163, 184, 0.2);
    --border-focus: var(--primary-500);
    
    /* Shadows - Subtle for dark theme */
    --shadow-xs: 0 1px 2px rgba(0, 0, 0, 0.3);
    --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 8px 24px rgba(0, 0, 0, 0.5);
    --shadow-xl: 0 16px 48px rgba(0, 0, 0, 0.6);
    
    /* Glow effects */
    --glow-primary: 0 0 20px rgba(14, 165, 233, 0.3);
    
    /* Gradients */
    --gradient-primary: linear-gradient(135deg, #0ea5e9 0%, #06b6d4 100%);
    --gradient-hero: radial-gradient(ellipse 80% 50% at 50% -20%, rgba(14, 165, 233, 0.15), transparent);
}

/* ============================================
   LIGHT THEME
   ============================================ */
[data-theme="light"] {
    --bg-base: #f8fafc;
    --bg-primary: #ffffff;
    --bg-secondary: #f8fafc;
    --bg-tertiary: #f1f5f9;
    --bg-elevated: #ffffff;
    --bg-card: #ffffff;
    --bg-input: #f8fafc;
    --bg-hover: rgba(0, 0, 0, 0.02);
    --bg-active: rgba(0, 0, 0, 0.04);
    
    --text-primary: #0f172a;
    --text-secondary: #475569;
    --text-tertiary: #94a3b8;
    --text-muted: #cbd5e1;
    
    --border-color: #e2e8f0;
    --border-hover: #cbd5e1;
    --border-focus: var(--primary-500);
    
    --shadow-xs: 0 1px 2px rgba(0, 0, 0, 0.05);
    --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.06);
    --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.08);
    --shadow-lg: 0 8px 24px rgba(0, 0, 0, 0.12);
    --shadow-xl: 0 16px 48px rgba(0, 0, 0, 0.16);
    
    --glow-primary: 0 0 20px rgba(14, 165, 233, 0.2);
    --gradient-hero: radial-gradient(ellipse 80% 50% at 50% -20%, rgba(14, 165, 233, 0.1), transparent);
}

/* RTL Support */
[dir="rtl"] {
    font-family: var(--font-family-ar);
}

/* Arabic Font */
@import url('https://fonts.googleapis.com/css2?family=Tajawal:wght@300;400;500;700&display=swap');