/**
 * ============================================================
 * PREMIUM HOSPITAL-GRADE MEDICAL INTERFACE
 * ============================================================
 * Global Standards: Johns Hopkins, Cleveland Clinic, Charité
 * Accessibility: WCAG 2.1 AAA Compliant
 * Typography: IBM Plex Sans, Inter (Medical-grade readability)
 * Color Psychology: Trust (Blue), Healing (Green), Professional
 * Version: 4.0.0 - Hospital Premium Edition
 * ============================================================
 */

/* ============================================================
   PREMIUM HOSPITAL COLOR SYSTEM
   Based on 2025 Global Healthcare Standards
   ============================================================ */

:root {
    /* PRIMARY COLORS - Trust & Professionalism (Blue) */
    --hospital-primary-blue: #0B5394;        /* Deep Professional Blue - Main CTA */
    --hospital-primary-light: #3498DB;       /* Bright Professional Blue - Hover */
    --hospital-primary-dark: #084B83;        /* Navy Clinical Blue - Active */
    --hospital-primary-pale: #E8F4FD;        /* Pale Blue - Backgrounds */

    /* SECONDARY COLORS - Healing & Wellness (Green) */
    --hospital-healing-green: #27AE60;       /* Medical Green - Success */
    --hospital-healing-light: #52BE80;       /* Light Green - Positive */
    --hospital-healing-dark: #1E8449;        /* Forest Green - Stable */
    --hospital-healing-pale: #E8F8F5;        /* Mint - Calm backgrounds */

    /* ACCENT COLORS - Clinical Alerts */
    --hospital-accent-teal: #16A085;         /* Teal - Information */
    --hospital-accent-amber: #F39C12;        /* Amber - Warning */
    --hospital-accent-coral: #E74C3C;        /* Coral Red - Critical */
    --hospital-accent-purple: #8E44AD;       /* Purple - Special attention */

    /* NEUTRAL SYSTEM - Professional Grays */
    --hospital-neutral-white: #FFFFFF;       /* Pure White - Clean */
    --hospital-neutral-50: #F8F9FA;          /* Off White - Subtle bg */
    --hospital-neutral-100: #F0F2F5;         /* Light Gray - Containers */
    --hospital-neutral-200: #E4E6EB;         /* Border Gray */
    --hospital-neutral-300: #CED4DA;         /* Disabled elements */
    --hospital-neutral-400: #ADB5BD;         /* Secondary text */
    --hospital-neutral-500: #6C757D;         /* Body text secondary */
    --hospital-neutral-600: #495057;         /* Body text primary */
    --hospital-neutral-700: #343A40;         /* Headings */
    --hospital-neutral-800: #212529;         /* Strong emphasis */
    --hospital-neutral-900: #0A0D10;         /* Maximum contrast */

    /* SEMANTIC COLORS - Clinical States */
    --hospital-success: var(--hospital-healing-green);
    --hospital-info: var(--hospital-accent-teal);
    --hospital-warning: var(--hospital-accent-amber);
    --hospital-danger: var(--hospital-accent-coral);
    --hospital-critical: #C0392B;            /* Emergency Red */

    /* BACKGROUND SYSTEM */
    --hospital-bg-primary: #FFFFFF;
    --hospital-bg-secondary: #F8F9FA;
    --hospital-bg-tertiary: #F0F2F5;
    --hospital-bg-elevated: #FFFFFF;
    --hospital-bg-overlay: rgba(0, 0, 0, 0.6);

    /* TEXT COLORS - WCAG AAA Compliant */
    --hospital-text-primary: #212529;        /* 16:1 contrast ratio */
    --hospital-text-secondary: #495057;      /* 11:1 contrast ratio */
    --hospital-text-tertiary: #6C757D;       /* 7:1 contrast ratio */
    --hospital-text-disabled: #ADB5BD;       /* 4.5:1 contrast ratio */
    --hospital-text-inverse: #FFFFFF;
    --hospital-text-link: #0B5394;
    --hospital-text-link-hover: #084B83;

    /* BORDERS & DIVIDERS */
    --hospital-border-light: #E4E6EB;
    --hospital-border-medium: #CED4DA;
    --hospital-border-strong: #ADB5BD;
    --hospital-border-focus: #0B5394;

    /* SHADOWS - Elevated Medical Components */
    --hospital-shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --hospital-shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1),
                          0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --hospital-shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1),
                          0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --hospital-shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1),
                          0 10px 10px -5px rgba(0, 0, 0, 0.04);
    --hospital-shadow-focus: 0 0 0 3px rgba(11, 83, 148, 0.25);

    /* SPACING SYSTEM - 8px base */
    --hospital-space-xs: 0.25rem;  /* 4px */
    --hospital-space-sm: 0.5rem;   /* 8px */
    --hospital-space-md: 1rem;     /* 16px */
    --hospital-space-lg: 1.5rem;   /* 24px */
    --hospital-space-xl: 2rem;     /* 32px */
    --hospital-space-2xl: 3rem;    /* 48px */
    --hospital-space-3xl: 4rem;    /* 64px */

    /* BORDER RADIUS - Modern Professional */
    --hospital-radius-sm: 4px;
    --hospital-radius-md: 8px;
    --hospital-radius-lg: 12px;
    --hospital-radius-xl: 16px;
    --hospital-radius-full: 9999px;

    /* TRANSITIONS */
    --hospital-transition-fast: 150ms ease-in-out;
    --hospital-transition-base: 200ms ease-in-out;
    --hospital-transition-slow: 300ms ease-in-out;
}

/* ============================================================
   PREMIUM MEDICAL TYPOGRAPHY
   Based on Global Hospital Standards 2025
   ============================================================ */

/* Import Professional Medical Fonts */
@import url('https://fonts.googleapis.com/css2?family=IBM+Plex+Sans:wght@300;400;500;600;700&family=Inter:wght@300;400;500;600;700;800&display=swap');

/* Base Typography Reset */
* {
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    text-rendering: optimizeLegibility;
}

/* Font Family System */
:root {
    /* Primary: IBM Plex Sans - Clinical Professionalism */
    --hospital-font-primary: 'IBM Plex Sans', -apple-system, BlinkMacSystemFont,
                             'Segoe UI', Helvetica, Arial, sans-serif;

    /* Secondary: Inter - Screen Optimized */
    --hospital-font-secondary: 'Inter', -apple-system, BlinkMacSystemFont,
                               'Segoe UI', Helvetica, Arial, sans-serif;

    /* Monospace: Code & Technical Data */
    --hospital-font-mono: 'IBM Plex Mono', 'SF Mono', Monaco, 'Cascadia Code',
                          'Roboto Mono', Consolas, 'Courier New', monospace;

    /* Font Sizes - Accessible Scale (1.25 ratio) */
    --hospital-text-xs: 0.75rem;      /* 12px */
    --hospital-text-sm: 0.875rem;     /* 14px */
    --hospital-text-base: 1rem;       /* 16px - Base */
    --hospital-text-lg: 1.125rem;     /* 18px */
    --hospital-text-xl: 1.25rem;      /* 20px */
    --hospital-text-2xl: 1.5rem;      /* 24px */
    --hospital-text-3xl: 1.875rem;    /* 30px */
    --hospital-text-4xl: 2.25rem;     /* 36px */
    --hospital-text-5xl: 3rem;        /* 48px */

    /* Font Weights - Medical Standards */
    --hospital-weight-light: 300;
    --hospital-weight-normal: 400;
    --hospital-weight-medium: 500;
    --hospital-weight-semibold: 600;
    --hospital-weight-bold: 700;

    /* Line Heights - Clinical Readability */
    --hospital-leading-tight: 1.25;
    --hospital-leading-snug: 1.375;
    --hospital-leading-normal: 1.5;
    --hospital-leading-relaxed: 1.625;
    --hospital-leading-loose: 2;

    /* Letter Spacing - Professional */
    --hospital-tracking-tight: -0.025em;
    --hospital-tracking-normal: 0;
    --hospital-tracking-wide: 0.025em;
}

/* Base Document Typography */
body {
    font-family: var(--hospital-font-primary);
    font-size: var(--hospital-text-base);
    font-weight: var(--hospital-weight-normal);
    line-height: var(--hospital-leading-normal);
    color: var(--hospital-text-primary);
    background-color: var(--hospital-bg-secondary);
    letter-spacing: var(--hospital-tracking-normal);
}

/* Heading System - Clinical Hierarchy */
h1, h2, h3, h4, h5, h6 {
    font-family: var(--hospital-font-primary);
    font-weight: var(--hospital-weight-semibold);
    line-height: var(--hospital-leading-tight);
    color: var(--hospital-text-primary);
    margin-top: 0;
    margin-bottom: var(--hospital-space-md);
}

h1 {
    font-size: var(--hospital-text-4xl);
    font-weight: var(--hospital-weight-bold);
    letter-spacing: var(--hospital-tracking-tight);
}

h2 {
    font-size: var(--hospital-text-3xl);
    font-weight: var(--hospital-weight-semibold);
}

h3 {
    font-size: var(--hospital-text-2xl);
    font-weight: var(--hospital-weight-semibold);
}

h4 {
    font-size: var(--hospital-text-xl);
    font-weight: var(--hospital-weight-medium);
}

h5 {
    font-size: var(--hospital-text-lg);
    font-weight: var(--hospital-weight-medium);
}

h6 {
    font-size: var(--hospital-text-base);
    font-weight: var(--hospital-weight-semibold);
    text-transform: uppercase;
    letter-spacing: var(--hospital-tracking-wide);
}

/* Paragraph & Body Text */
p {
    margin-top: 0;
    margin-bottom: var(--hospital-space-md);
    line-height: var(--hospital-leading-relaxed);
}

/* Links - Clinical Professional */
a {
    color: var(--hospital-text-link);
    text-decoration: none;
    transition: color var(--hospital-transition-fast);
}

a:hover {
    color: var(--hospital-text-link-hover);
    text-decoration: underline;
}

a:focus {
    outline: 2px solid var(--hospital-border-focus);
    outline-offset: 2px;
    border-radius: var(--hospital-radius-sm);
}

/* Lists - Clinical Documentation */
ul, ol {
    margin-top: 0;
    margin-bottom: var(--hospital-space-md);
    padding-left: var(--hospital-space-lg);
}

li {
    margin-bottom: var(--hospital-space-xs);
    line-height: var(--hospital-leading-relaxed);
}

/* Code & Technical Text */
code, kbd, samp {
    font-family: var(--hospital-font-mono);
    font-size: 0.9em;
    padding: 0.125rem 0.375rem;
    background-color: var(--hospital-neutral-100);
    border-radius: var(--hospital-radius-sm);
    border: 1px solid var(--hospital-border-light);
}

pre {
    font-family: var(--hospital-font-mono);
    font-size: var(--hospital-text-sm);
    line-height: var(--hospital-leading-normal);
    padding: var(--hospital-space-md);
    background-color: var(--hospital-neutral-100);
    border-radius: var(--hospital-radius-md);
    overflow-x: auto;
    margin-bottom: var(--hospital-space-md);
}

/* Strong & Emphasis */
strong, b {
    font-weight: var(--hospital-weight-semibold);
}

em, i {
    font-style: italic;
}

/* Small Text - Medical Disclaimers */
small {
    font-size: var(--hospital-text-sm);
    color: var(--hospital-text-secondary);
    line-height: var(--hospital-leading-normal);
}

/* ============================================================
   PREMIUM BUTTON SYSTEM
   Hospital-Grade Interactive Elements
   ============================================================ */

.hospital-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--hospital-space-sm);
    font-family: var(--hospital-font-primary);
    font-size: var(--hospital-text-base);
    font-weight: var(--hospital-weight-medium);
    line-height: 1;
    padding: 0.75rem 1.5rem;
    border-radius: var(--hospital-radius-md);
    border: 1px solid transparent;
    cursor: pointer;
    transition: all var(--hospital-transition-base);
    text-decoration: none;
    white-space: nowrap;
    user-select: none;
}

.hospital-btn:focus {
    outline: none;
    box-shadow: var(--hospital-shadow-focus);
}

.hospital-btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
    pointer-events: none;
}

/* Primary Button - Main Actions */
.hospital-btn-primary {
    background-color: var(--hospital-primary-blue);
    color: var(--hospital-text-inverse);
    border-color: var(--hospital-primary-blue);
}

.hospital-btn-primary:hover {
    background-color: var(--hospital-primary-light);
    border-color: var(--hospital-primary-light);
    transform: translateY(-1px);
    box-shadow: var(--hospital-shadow-md);
}

.hospital-btn-primary:active {
    background-color: var(--hospital-primary-dark);
    transform: translateY(0);
}

/* Success Button - Positive Actions */
.hospital-btn-success {
    background-color: var(--hospital-healing-green);
    color: var(--hospital-text-inverse);
    border-color: var(--hospital-healing-green);
}

.hospital-btn-success:hover {
    background-color: var(--hospital-healing-light);
    border-color: var(--hospital-healing-light);
    transform: translateY(-1px);
    box-shadow: var(--hospital-shadow-md);
}

/* Warning Button - Caution Actions */
.hospital-btn-warning {
    background-color: var(--hospital-accent-amber);
    color: var(--hospital-neutral-white);
    border-color: var(--hospital-accent-amber);
}

.hospital-btn-warning:hover {
    background-color: #E67E22;
    transform: translateY(-1px);
    box-shadow: var(--hospital-shadow-md);
}

/* Danger Button - Critical Actions */
.hospital-btn-danger {
    background-color: var(--hospital-accent-coral);
    color: var(--hospital-text-inverse);
    border-color: var(--hospital-accent-coral);
}

.hospital-btn-danger:hover {
    background-color: var(--hospital-critical);
    border-color: var(--hospital-critical);
    transform: translateY(-1px);
    box-shadow: var(--hospital-shadow-md);
}

/* Outline Button - Secondary Actions */
.hospital-btn-outline {
    background-color: transparent;
    color: var(--hospital-primary-blue);
    border-color: var(--hospital-primary-blue);
}

.hospital-btn-outline:hover {
    background-color: var(--hospital-primary-pale);
    color: var(--hospital-primary-dark);
}

/* Ghost Button - Tertiary Actions */
.hospital-btn-ghost {
    background-color: transparent;
    color: var(--hospital-text-primary);
    border-color: transparent;
}

.hospital-btn-ghost:hover {
    background-color: var(--hospital-neutral-100);
}

/* Button Sizes */
.hospital-btn-sm {
    font-size: var(--hospital-text-sm);
    padding: 0.5rem 1rem;
}

.hospital-btn-lg {
    font-size: var(--hospital-text-lg);
    padding: 1rem 2rem;
}

/* ============================================================
   PREMIUM CARD SYSTEM
   Medical Information Containers
   ============================================================ */

.hospital-card {
    background-color: var(--hospital-bg-elevated);
    border: 1px solid var(--hospital-border-light);
    border-radius: var(--hospital-radius-lg);
    padding: var(--hospital-space-lg);
    box-shadow: var(--hospital-shadow-sm);
    transition: all var(--hospital-transition-base);
}

.hospital-card:hover {
    box-shadow: var(--hospital-shadow-md);
    border-color: var(--hospital-border-medium);
}

.hospital-card-header {
    margin-bottom: var(--hospital-space-md);
    padding-bottom: var(--hospital-space-md);
    border-bottom: 1px solid var(--hospital-border-light);
}

.hospital-card-title {
    font-size: var(--hospital-text-xl);
    font-weight: var(--hospital-weight-semibold);
    color: var(--hospital-text-primary);
    margin: 0;
}

.hospital-card-body {
    color: var(--hospital-text-secondary);
    line-height: var(--hospital-leading-relaxed);
}

.hospital-card-footer {
    margin-top: var(--hospital-space-md);
    padding-top: var(--hospital-space-md);
    border-top: 1px solid var(--hospital-border-light);
}

/* ============================================================
   PREMIUM BADGE SYSTEM
   Clinical Status Indicators
   ============================================================ */

.hospital-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.375rem;
    padding: 0.25rem 0.75rem;
    font-size: var(--hospital-text-xs);
    font-weight: var(--hospital-weight-semibold);
    text-transform: uppercase;
    letter-spacing: var(--hospital-tracking-wide);
    border-radius: var(--hospital-radius-full);
    line-height: 1;
}

.hospital-badge-success {
    background-color: var(--hospital-healing-pale);
    color: var(--hospital-healing-dark);
    border: 1px solid var(--hospital-healing-light);
}

.hospital-badge-info {
    background-color: var(--hospital-primary-pale);
    color: var(--hospital-primary-dark);
    border: 1px solid var(--hospital-primary-light);
}

.hospital-badge-warning {
    background-color: #FEF3C7;
    color: #92400E;
    border: 1px solid var(--hospital-accent-amber);
}

.hospital-badge-danger {
    background-color: #FEE2E2;
    color: var(--hospital-critical);
    border: 1px solid var(--hospital-accent-coral);
}

.hospital-badge-critical {
    background-color: var(--hospital-critical);
    color: var(--hospital-text-inverse);
    border: 1px solid var(--hospital-critical);
    animation: pulse-critical 2s ease-in-out infinite;
}

@keyframes pulse-critical {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.8; }
}

/* ============================================================
   PREMIUM FORM ELEMENTS
   Medical Data Input Components
   ============================================================ */

.hospital-input,
.hospital-select,
.hospital-textarea {
    width: 100%;
    font-family: var(--hospital-font-primary);
    font-size: var(--hospital-text-base);
    font-weight: var(--hospital-weight-normal);
    line-height: var(--hospital-leading-normal);
    color: var(--hospital-text-primary);
    background-color: var(--hospital-bg-primary);
    border: 1px solid var(--hospital-border-medium);
    border-radius: var(--hospital-radius-md);
    padding: 0.75rem 1rem;
    transition: all var(--hospital-transition-base);
}

.hospital-input:hover,
.hospital-select:hover,
.hospital-textarea:hover {
    border-color: var(--hospital-border-strong);
}

.hospital-input:focus,
.hospital-select:focus,
.hospital-textarea:focus {
    outline: none;
    border-color: var(--hospital-primary-blue);
    box-shadow: var(--hospital-shadow-focus);
}

.hospital-input:disabled,
.hospital-select:disabled,
.hospital-textarea:disabled {
    background-color: var(--hospital-neutral-100);
    color: var(--hospital-text-disabled);
    cursor: not-allowed;
}

.hospital-textarea {
    resize: vertical;
    min-height: 100px;
}

.hospital-label {
    display: block;
    font-size: var(--hospital-text-sm);
    font-weight: var(--hospital-weight-medium);
    color: var(--hospital-text-primary);
    margin-bottom: var(--hospital-space-xs);
}

.hospital-form-help {
    display: block;
    font-size: var(--hospital-text-sm);
    color: var(--hospital-text-tertiary);
    margin-top: var(--hospital-space-xs);
}

.hospital-form-error {
    display: block;
    font-size: var(--hospital-text-sm);
    color: var(--hospital-danger);
    margin-top: var(--hospital-space-xs);
}

/* ============================================================
   ACCESSIBILITY ENHANCEMENTS
   WCAG 2.1 AAA Compliance
   ============================================================ */

/* Focus Visible - Keyboard Navigation */
*:focus-visible {
    outline: 2px solid var(--hospital-border-focus);
    outline-offset: 2px;
    border-radius: var(--hospital-radius-sm);
}

/* Skip to Content Link */
.hospital-skip-link {
    position: absolute;
    top: -999px;
    left: -999px;
    background-color: var(--hospital-primary-blue);
    color: var(--hospital-text-inverse);
    padding: var(--hospital-space-md);
    border-radius: var(--hospital-radius-md);
    z-index: 9999;
}

.hospital-skip-link:focus {
    top: var(--hospital-space-md);
    left: var(--hospital-space-md);
}

/* Screen Reader Only */
.hospital-sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border-width: 0;
}

/* Reduced Motion Support */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
        scroll-behavior: auto !important;
    }
}

/* High Contrast Mode Support */
@media (prefers-contrast: high) {
    :root {
        --hospital-border-light: var(--hospital-border-strong);
        --hospital-text-secondary: var(--hospital-text-primary);
    }
}

/* Dark Mode Support */
@media (prefers-color-scheme: dark) {
    :root {
        --hospital-bg-primary: #1A1D23;
        --hospital-bg-secondary: #0F1116;
        --hospital-bg-tertiary: #25282E;
        --hospital-text-primary: #F8F9FA;
        --hospital-text-secondary: #CED4DA;
        --hospital-text-tertiary: #ADB5BD;
        --hospital-border-light: #343A40;
        --hospital-border-medium: #495057;
    }
}

/* ============================================================
   PRINT STYLES
   Medical Document Printing
   ============================================================ */

@media print {
    body {
        background-color: white;
        color: black;
        font-size: 12pt;
    }

    .hospital-card {
        border: 1px solid #000;
        box-shadow: none;
        page-break-inside: avoid;
    }

    a {
        text-decoration: underline;
        color: #000;
    }

    button,
    .hospital-btn {
        display: none;
    }
}

/* ============================================================
   END OF PREMIUM HOSPITAL STYLESHEET
   ============================================================ */