/*
 * Medical Associates - Brand Stylesheet
 * 
 * Color Palette:
 * Primary Red: #C41E3A (MA Red)
 * Dark Grey: #333333 (Text)
 * Medium Grey: #666666 (Secondary text)
 * Light Grey: #E5E5E5 (Borders)
 * Background Grey: #F8F8F8
 * Black: #1a1a1a
 * White: #FFFFFF
 */

/* ==========================================================================
   Base Styles & Typography
   ========================================================================== */

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    /* MA Brand Colors */
    --ma-red: #C41E3A;
    --ma-red-dark: #A01628;
    --ma-red-light: #E63946;
    --ma-black: #1a1a1a;
    --ma-grey-dark: #333333;
    --ma-grey-medium: #666666;
    --ma-grey-light: #999999;
    --ma-grey-border: #E5E5E5;
    --ma-grey-background: #F8F8F8;
    --ma-white: #FFFFFF;
    
    /* Light Mode Variables (Default) */
    --bg-primary: #FFFFFF;
    --bg-secondary: #F8F8F8;
    --bg-tertiary: #E8E8E8;
    --text-primary: #333333;
    --text-secondary: #666666;
    --text-tertiary: #999999;
    --border-color: #E5E5E5;
    --header-bg-start: #C41E3A;
    --header-bg-end: #A01628;
    --header-text: #FFFFFF;
    --shadow-sm: 0 1px 3px rgba(0,0,0,0.12);
    --shadow-md: 0 2px 6px rgba(0,0,0,0.15);
    --shadow-lg: 0 4px 12px rgba(0,0,0,0.15);
    
    /* Functional Colors */
    --color-success: #2D6A4F;
    --color-success-bg: #E8F5E9;
    --color-warning: #F77F00;
    --color-warning-bg: #FFF8E1;
    --color-info: #0077B6;
    --color-info-bg: #E8F4F8;
    --color-danger: var(--ma-red);
    --color-danger-bg: #FFEBEE;
    
    /* Typography */
    --font-primary: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    --font-secondary: Georgia, 'Times New Roman', serif;
    
    /* Spacing */
    --spacing-xs: 5px;
    --spacing-sm: 10px;
    --spacing-md: 20px;
    --spacing-lg: 30px;
    --spacing-xl: 40px;
    --spacing-xxl: 60px;
    
    /* Border Radius */
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;
}

/* Dark Mode Variables */
[data-theme="dark"] {
    --bg-primary: #1a1a1a;
    --bg-secondary: #252525;
    --bg-tertiary: #303030;
    --text-primary: #E8E8E8;
    --text-secondary: #B8B8B8;
    --text-tertiary: #888888;
    --border-color: #404040;
    --header-bg-start: #C41E3A;
    --header-bg-end: #A01628;
    --header-text: #FFFFFF;
    --shadow-sm: 0 1px 3px rgba(0,0,0,0.3);
    --shadow-md: 0 2px 6px rgba(0,0,0,0.4);
    --shadow-lg: 0 4px 12px rgba(0,0,0,0.5);
    
    /* Functional Colors - Dark Mode */
    --color-success: #4CAF50;
    --color-success-bg: #1B3A1F;
    --color-warning: #FFA726;
    --color-warning-bg: #3D2E1A;
    --color-info: #29B6F6;
    --color-info-bg: #1A2F3D;
    --color-danger: #EF5350;
    --color-danger-bg: #3D1F1F;
}

body {
    font-family: var(--font-primary);
    font-size: 16px;
    line-height: 1.6;
    color: var(--text-primary);
    background-color: var(--bg-secondary);
    transition: background-color 0.3s ease, color 0.3s ease;
}

/* ==========================================================================
   Theme Toggle Button
   ========================================================================== */

.theme-toggle {
    position: fixed;
    top: 20px;
    right: 20px;
    z-index: 1000;
    background: var(--bg-primary);
    border: 2px solid var(--border-color);
    border-radius: 50px;
    padding: 10px 20px;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 10px;
    box-shadow: var(--shadow-md);
    transition: all 0.3s ease;
    font-weight: 600;
    color: var(--text-primary);
}

.theme-toggle:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
    border-color: var(--ma-red);
}

.theme-toggle:active {
    transform: translateY(0);
}

.theme-toggle-icon {
    font-size: 20px;
    line-height: 1;
    display: flex;
    align-items: center;
}

.theme-toggle-text {
    font-size: 14px;
    white-space: nowrap;
}

/* ==========================================================================
   Layout Components
   ========================================================================== */

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: var(--spacing-md);
}

.container-narrow {
    max-width: 900px;
    margin: 0 auto;
    padding: var(--spacing-md);
}

.container-wide {
    max-width: 1400px;
    margin: 0 auto;
    padding: var(--spacing-md);
}

/* ==========================================================================
   Header Styles
   ========================================================================== */

header {
    background: linear-gradient(135deg, var(--header-bg-start) 0%, var(--header-bg-end) 100%);
    color: var(--header-text);
    padding: var(--spacing-xl) var(--spacing-md);
    text-align: center;
    border-radius: var(--radius-lg);
    margin-bottom: var(--spacing-lg);
    box-shadow: var(--shadow-md);
}

header h1 {
    font-size: 2.5em;
    margin-bottom: var(--spacing-sm);
    font-weight: 700;
    letter-spacing: -0.5px;
    color: var(--header-text);
}

header p {
    font-size: 1.2em;
    opacity: 0.95;
    font-weight: 300;
    color: var(--header-text);
}

header .subtitle {
    font-size: 1em;
    opacity: 0.85;
    margin-top: var(--spacing-sm);
    color: var(--header-text);
}

/* ==========================================================================
   Content Area
   ========================================================================== */

.content {
    background: var(--bg-primary);
    padding: var(--spacing-xl);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    margin-bottom: var(--spacing-lg);
    transition: background-color 0.3s ease;
}

/* ==========================================================================
   Typography - Headings
   ========================================================================== */

h1, h2, h3, h4, h5, h6 {
    color: var(--text-primary);
    font-weight: 700;
    line-height: 1.3;
    margin-bottom: var(--spacing-md);
}

h1 {
    font-size: 2.5em;
    color: var(--ma-red);
}

h2 {
    font-size: 1.8em;
    color: var(--ma-red);
    margin-top: var(--spacing-lg);
    padding-bottom: var(--spacing-sm);
    border-bottom: 3px solid var(--ma-red);
}

h3 {
    font-size: 1.4em;
    color: var(--text-primary);
    margin-top: var(--spacing-md);
}

h4 {
    font-size: 1.2em;
    color: var(--text-secondary);
    margin-top: var(--spacing-md);
}

h5 {
    font-size: 1.1em;
    color: var(--text-secondary);
}

h6 {
    font-size: 1em;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

/* ==========================================================================
   Typography - Body Text
   ========================================================================== */

p {
    margin-bottom: var(--spacing-md);
    text-align: justify;
    color: var(--text-primary);
}

strong, b {
    font-weight: 600;
    color: var(--text-primary);
}

em, i {
    font-style: italic;
}

/* ==========================================================================
   Lists
   ========================================================================== */

ul, ol {
    margin-left: 30px;
    margin-bottom: var(--spacing-md);
}

li {
    margin-bottom: var(--spacing-sm);
    line-height: 1.7;
    color: var(--text-primary);
}

ul li::marker {
    color: var(--ma-red);
}

/* ==========================================================================
   Links
   ========================================================================== */

a {
    color: var(--ma-red);
    text-decoration: none;
    font-weight: 500;
    transition: all 0.3s ease;
}

a:hover {
    color: var(--ma-red-dark);
    text-decoration: underline;
}

a:focus {
    outline: 2px solid var(--ma-red);
    outline-offset: 2px;
}

.external-link {
    display: inline-block;
    background: var(--ma-red);
    color: var(--ma-white);
    padding: 12px 25px;
    border-radius: var(--radius-sm);
    text-decoration: none;
    margin: var(--spacing-sm) 0;
    transition: all 0.3s ease;
    font-weight: 600;
}

.external-link:hover {
    background: var(--ma-red-dark);
    text-decoration: none;
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

/* ==========================================================================
   Information Boxes
   ========================================================================== */

.info-box,
.highlight-box,
.warning-box,
.success-box,
.danger-box {
    padding: var(--spacing-md);
    margin: var(--spacing-md) 0;
    border-radius: var(--radius-md);
    border-left: 5px solid;
    transition: background-color 0.3s ease;
}

.highlight-box {
    background-color: var(--color-danger-bg);
    border-left-color: var(--ma-red);
}

.highlight-box strong {
    color: var(--ma-red);
}

.info-box {
    background-color: var(--color-info-bg);
    border-left-color: var(--color-info);
}

.info-box h4 {
    color: var(--color-info);
}

.warning-box {
    background-color: var(--color-warning-bg);
    border-left-color: var(--color-warning);
}

.warning-box strong {
    color: var(--color-warning);
}

.success-box {
    background-color: var(--color-success-bg);
    border-left-color: var(--color-success);
}

.success-box strong {
    color: var(--color-success);
}

.danger-box {
    background-color: var(--color-danger-bg);
    border-left-color: var(--ma-red);
}

/* ==========================================================================
   Technique Steps (Instructional Content)
   ========================================================================== */

.technique-steps {
    background: var(--bg-secondary);
    padding: var(--spacing-md);
    border-radius: var(--radius-md);
    margin: var(--spacing-md) 0;
    border: 1px solid var(--border-color);
    transition: background-color 0.3s ease;
}

.technique-steps h4 {
    color: var(--ma-red);
    margin-top: 0;
}

.technique-steps ol {
    margin-left: var(--spacing-md);
}

.technique-steps li {
    margin-bottom: var(--spacing-md);
    line-height: 1.8;
}

.technique-steps ul {
    margin-top: var(--spacing-sm);
}

/* ==========================================================================
   Tables
   ========================================================================== */

.table-wrapper {
    overflow-x: auto;
    margin: var(--spacing-md) 0;
}

table {
    width: 100%;
    border-collapse: collapse;
    margin: var(--spacing-md) 0;
    background: var(--bg-primary);
    box-shadow: var(--shadow-sm);
    border-radius: var(--radius-md);
    overflow: hidden;
    transition: background-color 0.3s ease;
}

thead {
    background: var(--ma-red);
    color: var(--ma-white);
}

th {
    padding: 15px;
    text-align: left;
    font-weight: 600;
    text-transform: uppercase;
    font-size: 0.9em;
    letter-spacing: 0.5px;
    color: var(--ma-white);
}

td {
    padding: 12px 15px;
    border-bottom: 1px solid var(--border-color);
    color: var(--text-primary);
}

tbody tr:hover {
    background-color: var(--bg-secondary);
}

tbody tr:last-child td {
    border-bottom: none;
}

/* Striped tables */
.table-striped tbody tr:nth-child(even) {
    background-color: var(--bg-secondary);
}

/* ==========================================================================
   Buttons
   ========================================================================== */

.btn {
    display: inline-block;
    padding: 12px 24px;
    border-radius: var(--radius-sm);
    font-weight: 600;
    text-decoration: none;
    transition: all 0.3s ease;
    border: none;
    cursor: pointer;
    font-size: 1em;
}

.btn-primary {
    background: var(--ma-red);
    color: var(--ma-white);
}

.btn-primary:hover {
    background: var(--ma-red-dark);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.btn-secondary {
    background: var(--text-primary);
    color: var(--bg-primary);
}

.btn-secondary:hover {
    background: var(--text-secondary);
}

.btn-outline {
    background: transparent;
    color: var(--ma-red);
    border: 2px solid var(--ma-red);
}

.btn-outline:hover {
    background: var(--ma-red);
    color: var(--ma-white);
}

/* ==========================================================================
   Cards
   ========================================================================== */

.card {
    background: var(--bg-primary);
    border-radius: var(--radius-md);
    padding: var(--spacing-md);
    margin-bottom: var(--spacing-md);
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--border-color);
    transition: background-color 0.3s ease;
}

.card-header {
    background: var(--ma-red);
    color: var(--ma-white);
    padding: var(--spacing-md);
    margin: calc(var(--spacing-md) * -1);
    margin-bottom: var(--spacing-md);
    border-radius: var(--radius-md) var(--radius-md) 0 0;
}

.card-title {
    font-size: 1.3em;
    font-weight: 600;
    margin-bottom: 0;
    color: var(--ma-white);
}

/* ==========================================================================
   Footer
   ========================================================================== */

footer {
    text-align: center;
    padding: var(--spacing-md);
    color: var(--text-secondary);
    font-size: 0.9em;
    margin-top: var(--spacing-xl);
}

footer p {
    margin-bottom: var(--spacing-sm);
    text-align: center;
}

footer a {
    color: var(--text-secondary);
}

footer a:hover {
    color: var(--ma-red);
}

/* ==========================================================================
   Utility Classes
   ========================================================================== */

/* Text Alignment */
.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }
.text-justify { text-align: justify; }

/* Text Colors */
.text-red { color: var(--ma-red); }
.text-grey { color: var(--text-secondary); }
.text-dark { color: var(--text-primary); }
.text-black { color: var(--text-primary); }

/* Background Colors */
.bg-red { background-color: var(--ma-red); }
.bg-grey { background-color: var(--bg-secondary); }
.bg-white { background-color: var(--bg-primary); }

/* Spacing */
.mt-sm { margin-top: var(--spacing-sm); }
.mt-md { margin-top: var(--spacing-md); }
.mt-lg { margin-top: var(--spacing-lg); }
.mb-sm { margin-bottom: var(--spacing-sm); }
.mb-md { margin-bottom: var(--spacing-md); }
.mb-lg { margin-bottom: var(--spacing-lg); }
.pt-sm { padding-top: var(--spacing-sm); }
.pt-md { padding-top: var(--spacing-md); }
.pt-lg { padding-top: var(--spacing-lg); }
.pb-sm { padding-bottom: var(--spacing-sm); }
.pb-md { padding-bottom: var(--spacing-md); }
.pb-lg { padding-bottom: var(--spacing-lg); }

/* Borders */
.border-top { border-top: 1px solid var(--border-color); }
.border-bottom { border-bottom: 1px solid var(--border-color); }
.border-red { border-color: var(--ma-red); }

/* Display */
.block { display: block; }
.inline-block { display: inline-block; }
.flex { display: flex; }

/* ==========================================================================
   Responsive Design
   ========================================================================== */

@media (max-width: 768px) {
    .container {
        padding: var(--spacing-sm);
    }
    
    .content {
        padding: var(--spacing-md);
    }
    
    header h1 {
        font-size: 1.8em;
    }
    
    h2 {
        font-size: 1.5em;
    }
    
    h3 {
        font-size: 1.3em;
    }
    
    table {
        font-size: 0.9em;
    }
    
    th, td {
        padding: 8px;
    }
    
    .theme-toggle {
        top: 10px;
        right: 10px;
        padding: 8px 15px;
    }
    
    .theme-toggle-text {
        display: none;
    }
}

@media (max-width: 480px) {
    header h1 {
        font-size: 1.5em;
    }
    
    header p {
        font-size: 1em;
    }
    
    .content {
        padding: var(--spacing-sm);
    }
    
    /* Make tables scrollable on mobile */
    .table-wrapper {
        overflow-x: auto;
    }
}

/* ==========================================================================
   Print Styles
   ========================================================================== */

@media print {
    body {
        background: white;
        color: black;
    }
    
    header {
        background: white !important;
        color: black !important;
        border: 2px solid black;
    }
    
    .content {
        box-shadow: none;
    }
    
    a {
        text-decoration: underline;
        color: black;
    }
    
    .no-print,
    .theme-toggle {
        display: none !important;
    }
}

/* ==========================================================================
   Accessibility Enhancements
   ========================================================================== */

/* Skip to main content link */
.skip-link {
    position: absolute;
    top: -40px;
    left: 0;
    background: var(--ma-red);
    color: var(--ma-white);
    padding: 8px;
    text-decoration: none;
    z-index: 100;
}

.skip-link:focus {
    top: 0;
}

/* Focus styles */
*:focus {
    outline: 2px solid var(--ma-red);
    outline-offset: 2px;
}

/* High contrast mode support */
@media (prefers-contrast: high) {
    :root {
        --text-secondary: #555555;
        --border-color: #999999;
    }
}

/* Reduced motion support */
@media (prefers-reduced-motion: reduce) {
    * {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

/* Respect user's color scheme preference */
@media (prefers-color-scheme: dark) {
    :root:not([data-theme="light"]) {
        --bg-primary: #1a1a1a;
        --bg-secondary: #252525;
        --bg-tertiary: #303030;
        --text-primary: #E8E8E8;
        --text-secondary: #B8B8B8;
        --text-tertiary: #888888;
        --border-color: #404040;
        --shadow-sm: 0 1px 3px rgba(0,0,0,0.3);
        --shadow-md: 0 2px 6px rgba(0,0,0,0.4);
        --shadow-lg: 0 4px 12px rgba(0,0,0,0.5);
        --color-success: #4CAF50;
        --color-success-bg: #1B3A1F;
        --color-warning: #FFA726;
        --color-warning-bg: #3D2E1A;
        --color-info: #29B6F6;
        --color-info-bg: #1A2F3D;
        --color-danger: #EF5350;
        --color-danger-bg: #3D1F1F;
    }
}