/* Professional Portfolio CSS - Senior Developer Grade */

/* ===============================================
   CSS CUSTOM PROPERTIES (PROFESSIONAL PALETTE)
   =============================================== */

:root {
    /* Professional Color Palette - Light Mode */
    --primary-color: #2c3e50;        /* Navy blue */
    --primary-light: #34495e;        /* Lighter navy */
    --secondary-color: #3498db;      /* Professional blue */
    --accent-color: #e74c3c;         /* Subtle red accent */
    --text-color: #2c3e50;           /* Dark navy text */
    --text-secondary: #5a6c7d;       /* Medium gray */
    --text-muted: #7f8c8d;           /* Light gray */
    --bg-color: #ffffff;             /* Pure white */
    --bg-secondary: #f8f9fa;         /* Off-white */
    --border-color: rgba(44, 62, 80, 0.1);
    
    /* Glass morphism colors */
    --glass-bg: rgba(255, 255, 255, 0.25);
    --glass-border: rgba(255, 255, 255, 0.3);
    --glass-shadow: 0 8px 32px rgba(44, 62, 80, 0.1);
    --glass-shadow-hover: 0 12px 48px rgba(44, 62, 80, 0.15);
    
    /* Blur sections */
    --blur-bg-start: rgba(248, 249, 250, 0.4);
    --blur-bg-end: rgba(255, 255, 255, 0.3);
    
    /* Success/Error states */
    --success-color: #27ae60;
    --error-color: #e74c3c;
    --warning-color: #f39c12;
    
    /* Typography */
    --font-family: 'Poppins', sans-serif;
    --font-size-xs: 0.75rem;
    --font-size-sm: 0.875rem;
    --font-size-base: 1rem;
    --font-size-lg: 1.125rem;
    --font-size-xl: 1.25rem;
    --font-size-2xl: 1.5rem;
    --font-size-3xl: 1.875rem;
    --font-size-4xl: 2.25rem;
    --font-size-5xl: 3rem;
    
    /* Spacing Scale */
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-2xl: 3rem;
    --spacing-3xl: 4rem;
    
    /* Layout */
    --container-max-width: 1200px;
    --border-radius-sm: 8px;
    --border-radius-md: 12px;
    --border-radius-lg: 16px;
    --border-radius-xl: 20px;
    --border-radius-full: 9999px;
    
    /* Transitions */
    --transition-fast: 0.15s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;
    
    /* Z-index Scale */
    --z-dropdown: 1000;
    --z-sticky: 1020;
    --z-fixed: 1030;
    --z-modal-backdrop: 1040;
    --z-modal: 1050;
    --z-popover: 1060;
    --z-tooltip: 1070;
    --z-toast: 1080;
}

/* Dark Mode Professional Palette */
.dark-mode {
    --primary-color: #ecf0f1;         /* Light gray for primary elements */
    --primary-light: #bdc3c7;         /* Medium gray */
    --secondary-color: #3498db;       /* Keep professional blue */
    --accent-color: #e74c3c;          /* Keep red accent */
    --text-color: #ecf0f1;            /* Light text */
    --text-secondary: #bdc3c7;        /* Medium gray text */
    --text-muted: #95a5a6;            /* Muted gray */
    --bg-color: #000000;              /* Pure black */
    --bg-secondary: #0a0a0a;          /* Near black */
    --border-color: rgba(236, 240, 241, 0.1);
    
    /* Dark glass morphism */
    --glass-bg: rgba(0, 0, 0, 0.3);
    --glass-border: rgba(255, 255, 255, 0.1);
    --glass-shadow: 0 8px 32px rgba(0, 0, 0, 0.4);
    --glass-shadow-hover: 0 12px 48px rgba(0, 0, 0, 0.6);
    
    /* Dark blur sections */
    --blur-bg-start: rgba(10, 10, 10, 0.4);
    --blur-bg-end: rgba(0, 0, 0, 0.3);
}

/* ===============================================
   RESET & BASE STYLES
   =============================================== */

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

* {
    margin: 0;
    padding: 0;
}

html {
    font-size: 16px;
    scroll-behavior: smooth;
    scroll-padding-top: 80px;
}

body {
    font-family: var(--font-family);
    font-size: var(--font-size-base);
    line-height: 1.6;
    color: var(--text-color);
    background-color: var(--bg-color);
    overflow-x: hidden;
    position: relative;
    min-height: 100vh;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    transition: background-color var(--transition-normal), color var(--transition-normal);
    scrollbar-width: none;
    -ms-overflow-style: none;
}
body::-webkit-scrollbar {
    display: none;
}

html {
    scrollbar-width: none;
    -ms-overflow-style: none;
}

html::-webkit-scrollbar {
    display: none;
}

* {
    scrollbar-width: none;
    -ms-overflow-style: none;
}

*::-webkit-scrollbar {
    display: none;
}



/* ===============================================
   STARRY BACKGROUND
   =============================================== */

#stars-canvas {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    z-index: -1;
    pointer-events: none;
}

/* ===============================================
   LAYOUT COMPONENTS
   =============================================== */

.container {
    width: 100%;
    max-width: var(--container-max-width);
    margin: 0 auto;
    padding: 0 var(--spacing-xl);
    position: relative;
    min-height: 100vh;
}

/* ===============================================
   GLASS MORPHISM COMPONENTS
   =============================================== */

.glass-nav,
.glass-card,
.glass-footer {
    background: var(--glass-bg);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid var(--glass-border);
    box-shadow: var(--glass-shadow);
    border-radius: var(--border-radius-md);
    transition: transform var(--transition-normal), 
                box-shadow var(--transition-normal);
}

.glass-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--glass-shadow-hover);
}

/* ===============================================
   NAVIGATION
   =============================================== */

.glass-nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-lg) var(--spacing-xl);
    margin: var(--spacing-md) 0;
    position: sticky;
    top: var(--spacing-md);
    z-index: var(--z-sticky);
}

.logo {
    font-size: var(--font-size-xl);
    font-weight: 700;
}

.logo span {
    color: var(--primary-color);
    font-weight: 700;
}

.nav-links {
    display: flex;
    list-style: none;
    gap: var(--spacing-lg);
    justify-content: center;
    align-items: center;
}

.nav-links a {
    text-decoration: none;
    color: var(--text-color);
    font-weight: 500;
    position: relative;
    transition: color var(--transition-normal);
    padding: var(--spacing-sm) 0;
}

.nav-links a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--secondary-color);
    transition: width var(--transition-normal);
}

.nav-links a:hover,
.nav-links a.active {
    color: var(--secondary-color);
}

.nav-links a:hover::after,
.nav-links a.active::after {
    width: 100%;
}

.menu-toggle {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    font-size: var(--font-size-xl);
    color: var(--text-color);
    padding: var(--spacing-sm);
    border-radius: var(--border-radius-sm);
    transition: background-color var(--transition-normal);
}

.menu-toggle:hover {
    background-color: var(--glass-bg);
}

/* Mobile Menu Glass Background Overlay */
.nav-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    background: var(--glass-bg);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    opacity: 0;
    visibility: hidden;
    transition: opacity var(--transition-normal), visibility var(--transition-normal);
    z-index: 999;
    pointer-events: none;
}

.nav-overlay.active {
    opacity: 1;
    visibility: visible;
    pointer-events: auto;
}

/* ===============================================
   HERO SECTION
   =============================================== */

.hero {
    min-height: 85vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    padding: var(--spacing-2xl) 0;
    text-align: center;
}

.hero-content {
    max-width: 900px;
    padding: var(--spacing-2xl);
    margin-bottom: var(--spacing-2xl);
    opacity: 0;
    animation: fadeUp 1s ease forwards;
    animation-delay: 0.3s;
}

.hero-title {
    font-size: var(--font-size-4xl);
    margin-bottom: var(--spacing-lg);
    line-height: 1.1;
    font-weight: 700;
}

.hero-subtitle {
    font-size: var(--font-size-2xl);
    margin-bottom: var(--spacing-lg);
    color: var(--secondary-color);
    font-weight: 600;
}

.hero-description {
    font-size: var(--font-size-lg);
    color: var(--text-secondary);
    margin-bottom: var(--spacing-lg);
    line-height: 1.6;
}

.highlight {
    color: var(--secondary-color);
}

.cta-buttons {
    display: flex;
    justify-content: center;
    gap: var(--spacing-lg);
    margin-top: var(--spacing-lg);
    flex-wrap: wrap;
}

/* ===============================================
   BUTTONS
   =============================================== */

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-lg) var(--spacing-2xl);
    border-radius: var(--border-radius-full);
    border: none;
    font-weight: 600;
    font-size: var(--font-size-base);
    text-decoration: none;
    cursor: pointer;
    transition: all var(--transition-normal);
    position: relative;
    overflow: hidden;
    min-height: 52px;
    font-family: inherit;
}

.btn:focus-visible {
    outline: 2px solid var(--secondary-color);
    outline-offset: 2px;
}

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

.primary-btn:hover {
    background: var(--primary-color);
    transform: translateY(-3px);
    box-shadow: 0 10px 20px rgba(52, 152, 219, 0.3);
}

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

.secondary-btn:hover {
    background-color: var(--secondary-color);
    color: white;
    transform: translateY(-3px);
}

.small-btn {
    padding: var(--spacing-sm) var(--spacing-lg);
    font-size: var(--font-size-sm);
    min-height: 36px;
}

/* Button Loading State */
.btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
    transform: none !important;
}

.btn-spinner {
    display: none;
    width: 16px;
    height: 16px;
    border: 2px solid transparent;
    border-top: 2px solid currentColor;
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

.btn.loading .btn-text {
    opacity: 0;
}

.btn.loading .btn-spinner {
    display: block;
}

/* ===============================================
   SECTIONS
   =============================================== */

section {
    padding: var(--spacing-3xl) 0;
}

.section-title {
    text-align: center;
    font-size: var(--font-size-4xl);
    font-weight: 700;
    margin-bottom: var(--spacing-3xl);
    position: relative;
    opacity: 0;
    transform: translateY(20px);
    transition: opacity var(--transition-slow), transform var(--transition-slow);
    color: var(--text-color);
}

.section-title.visible {
    opacity: 1;
    transform: translateY(0);
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
    width: 80px;
    height: 3px;
    background: var(--secondary-color);
    border-radius: var(--border-radius-full);
}

/* ===============================================
   ABOUT SECTION
   =============================================== */

.about-content {
    padding: var(--spacing-3xl);
    max-width: 1000px;
    margin: 0 auto;
}

.about-text p {
    margin-bottom: var(--spacing-lg);
    font-size: var(--font-size-lg);
    color: var(--text-secondary);
}

.skills {
    margin-top: var(--spacing-xl);
}

.skills h3 {
    margin-bottom: var(--spacing-lg);
    font-size: var(--font-size-xl);
    color: var(--text-color);
}

.skill-item {
    margin-bottom: var(--spacing-lg);
}

.skill-item span {
    display: block;
    margin-bottom: var(--spacing-sm);
    font-weight: 500;
    font-size: var(--font-size-base);
    color: var(--text-color);
}

.skill-bar {
    width: 100%;
    height: 10px;
    background-color: var(--bg-secondary);
    border-radius: var(--border-radius-full);
    overflow: hidden;
    position: relative;
    border: 1px solid var(--border-color);
}

.skill-progress {
    height: 100%;
    background: linear-gradient(90deg, var(--secondary-color), var(--primary-color));
    border-radius: var(--border-radius-full);
    width: 0;
    transition: width 2s ease;
}

.skill-progress.animated {
    animation: progressAnimation 2s ease forwards;
}

/* ===============================================
   PROJECTS SECTION
   =============================================== */

.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(330px, 1fr));
    gap: var(--spacing-xl);
    width: 100%;
    max-width: 1400px;
    margin: 0 auto;
}

.project-card {
    overflow: hidden;
    transition: transform var(--transition-slow);
    height: 100%;
    display: flex;
    flex-direction: column;
}

.project-image {
    height: 200px;
    background-size: cover;
    background-position: center;
    border-radius: var(--border-radius-md) var(--border-radius-md) 0 0;
    transition: transform var(--transition-normal);
}

.project-card:hover .project-image {
    transform: scale(1.05);
}

.project-info {
    padding: var(--spacing-xl);
    flex: 1;
    display: flex;
    flex-direction: column;
}

.project-info h3 {
    margin-bottom: var(--spacing-sm);
    color: var(--secondary-color);
    font-size: var(--font-size-xl);
    font-weight: 600;
}

.project-info p {
    color: var(--text-secondary);
    margin-bottom: var(--spacing-md);
    flex-grow: 1;
}

.project-tags {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-sm);
    margin: var(--spacing-md) 0;
}

.project-tags span {
    background: var(--bg-secondary);
    color: var(--text-color);
    padding: var(--spacing-xs) var(--spacing-md);
    border-radius: var(--border-radius-full);
    font-size: var(--font-size-sm);
    font-weight: 500;
    border: 1px solid var(--border-color);
}

.project-links {
    margin-top: auto;
    display: flex;
    gap: var(--spacing-sm);
}

/* ===============================================
   CONTACT SECTION
   =============================================== */

.contact-container {
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: var(--spacing-xl);
    max-width: 1000px;
    margin: 0 auto;
}

.contact-info {
    padding: var(--spacing-xl);
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.info-item {
    display: flex;
    align-items: center;
    margin-bottom: var(--spacing-lg);
    color: var(--text-color);
}

.info-item i {
    font-size: var(--font-size-xl);
    color: var(--secondary-color);
    margin-right: var(--spacing-md);
    width: 30px;
    flex-shrink: 0;
}

/* ===============================================
   FORM STYLES
   =============================================== */

.contact-form {
    padding: var(--spacing-xl);
    position: relative;
}

.form-group {
    margin-bottom: var(--spacing-lg);
}

.form-group label {
    display: block;
    margin-bottom: var(--spacing-sm);
    font-weight: 500;
    color: var(--text-color);
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: var(--spacing-md);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-sm);
    background: var(--glass-bg);
    color: var(--text-color);
    font-size: var(--font-size-base);
    font-family: inherit;
    transition: border-color var(--transition-normal), 
                box-shadow var(--transition-normal);
    resize: vertical;
}

.form-group input::placeholder,
.form-group textarea::placeholder {
    color: var(--text-muted);
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--secondary-color);
    box-shadow: 0 0 0 3px rgba(52, 152, 219, 0.1);
}

.form-group textarea {
    min-height: 120px;
}

/* Form Validation */
.form-group.error input,
.form-group.error textarea {
    border-color: var(--error-color);
}

.error-message {
    display: block;
    color: var(--error-color);
    font-size: var(--font-size-sm);
    margin-top: var(--spacing-xs);
    opacity: 0;
    transition: opacity var(--transition-normal);
}

.form-group.error .error-message {
    opacity: 1;
}

.form-status {
    margin-top: var(--spacing-md);
    padding: var(--spacing-md);
    border-radius: var(--border-radius-sm);
    font-weight: 500;
    text-align: center;
    opacity: 0;
    transition: opacity var(--transition-normal);
}

.form-status.success {
    background-color: rgba(39, 174, 96, 0.1);
    color: var(--success-color);
    border: 1px solid rgba(39, 174, 96, 0.2);
    opacity: 1;
}

.form-status.error {
    background-color: rgba(231, 76, 60, 0.1);
    color: var(--error-color);
    border: 1px solid rgba(231, 76, 60, 0.2);
    opacity: 1;
}

/* ===============================================
   FOOTER
   =============================================== */

.glass-footer {
    margin-top: var(--spacing-3xl);
    padding: var(--spacing-xl);
    text-align: center;
    border-radius: var(--border-radius-md) var(--border-radius-md) 0 0;
}

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: var(--spacing-md);
}

.footer-content p {
    color: var(--text-secondary);
}

.footer-social {
    display: flex;
    gap: var(--spacing-md);
}

.footer-social a {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    color: var(--text-color);
    font-size: var(--font-size-lg);
    border-radius: var(--border-radius-full);
    transition: all var(--transition-normal);
    background: var(--glass-bg);
    border: 1px solid var(--border-color);
}

.footer-social a:hover {
    color: var(--secondary-color);
    background: var(--bg-secondary);
    transform: translateY(-2px);
}

/* ===============================================
   THEME TOGGLE
   =============================================== */

.theme-switch {
    margin-right: var(--spacing-lg);
    height: 26px;
    position: relative;
    display: flex;
    align-items: center;
}

#theme-toggle {
    opacity: 0;
    position: absolute;
    width: 0;
    height: 0;
}

.toggle-label {
    position: relative;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 var(--spacing-sm);
    cursor: pointer;
    width: 60px;
    height: 30px;
    background: var(--glass-bg);
    border-radius: var(--border-radius-full);
    backdrop-filter: blur(10px);
    border: 1px solid var(--glass-border);
    transition: var(--transition-normal);
}

.toggle-label i {
    font-size: 14px;
    transition: var(--transition-normal);
}

.fa-sun {
    color: #f39c12;
}

.fa-moon {
    color: var(--secondary-color);
}

.toggle-ball {
    position: absolute;
    left: 5px;
    top: 3px;
    width: 22px;
    height: 22px;
    background-color: var(--text-color);
    border-radius: 50%;
    transition: transform var(--transition-slow);
}

#theme-toggle:checked + .toggle-label .toggle-ball {
    transform: translateX(28px);
    background-color: var(--bg-color);
}

/* ===============================================
   ANIMATIONS
   =============================================== */

@keyframes fadeIn {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}

@keyframes fadeUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes progressAnimation {
    from {
        width: 0;
    }
    to {
        width: var(--target-width, 100%);
    }
}

@keyframes spin {
    from {
        transform: rotate(0deg);
    }
    to {
        transform: rotate(360deg);
    }
}

/* ===============================================
   RESPONSIVE DESIGN
   =============================================== */

@media (max-width: 768px) {
    .container {
        padding: 0 var(--spacing-md);
    }
    
    .glass-nav {
        padding: var(--spacing-md);
    }
    
    .nav-links {
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        flex-direction: column;
        background: var(--glass-bg);
        backdrop-filter: blur(20px);
        -webkit-backdrop-filter: blur(20px);
        border: 1px solid var(--glass-border);
        border-radius: var(--border-radius-md);
        padding: var(--spacing-md);
        margin-top: var(--spacing-sm);
        transform: translateY(-10px);
        opacity: 0;
        visibility: hidden;
        transition: all var(--transition-normal);
        gap: var(--spacing-sm);
        z-index: 9999;
    }
    
    .nav-links.active {
        transform: translateY(0);
        opacity: 1;
        visibility: visible;
    }
    
    .menu-toggle {
        display: block;
    }
    
    .theme-switch {
        margin-right: var(--spacing-md);
    }
    
    .hero-title {
        font-size: var(--font-size-3xl);
        margin-bottom: var(--spacing-md);
    }
    
    .hero-subtitle {
        font-size: var(--font-size-xl);
        margin-bottom: var(--spacing-md);
    }
    
    .hero-content {
        padding: var(--spacing-lg);
        margin-bottom: var(--spacing-lg);
    }
    
    .hero-description {
        font-size: var(--font-size-base);
        margin-bottom: var(--spacing-md);
    }
    
    .cta-buttons {
        flex-direction: column;
        align-items: center;
        gap: var(--spacing-md);
    }
    
    .btn {
        width: 100%;
        max-width: 280px;
        padding: var(--spacing-md) var(--spacing-xl);
        min-height: 48px;
    }
    
    .section-title {
        font-size: var(--font-size-3xl);
    }
    
    .about-content {
        padding: var(--spacing-xl);
    }
    
    .projects-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-lg);
    }
    
    .contact-container {
        grid-template-columns: 1fr;
        gap: var(--spacing-lg);
    }
    
    .contact-info,
    .contact-form {
        padding: var(--spacing-lg);
    }
    
    .footer-content {
        flex-direction: column;
        text-align: center;
        gap: var(--spacing-lg);
    }
    
    .overlay-text span {
        font-size: var(--font-size-xl);
        padding: var(--spacing-md) var(--spacing-lg);
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 var(--spacing-sm);
    }
    
    .glass-nav {
        padding: var(--spacing-sm) var(--spacing-md);
    }
    
    .hero-title {
        font-size: var(--font-size-2xl);
    }
    
    .hero-subtitle {
        font-size: var(--font-size-xl);
    }
    
    .hero-content {
        padding: var(--spacing-lg);
    }
    
    .section-title {
        font-size: var(--font-size-2xl);
    }
    
    .about-content,
    .contact-info,
    .contact-form {
        padding: var(--spacing-md);
    }
    
    .projects-grid {
        gap: var(--spacing-md);
    }
    
    .overlay-text span {
        font-size: var(--font-size-lg);
        padding: var(--spacing-sm) var(--spacing-md);
        letter-spacing: 1px;
    }
    
    .theme-switch {
        margin-right: var(--spacing-sm);
    }
}

/* ===============================================
   PRINT STYLES
   =============================================== */

@media print {
    * {
        background: transparent !important;
        color: black !important;
        box-shadow: none !important;
        text-shadow: none !important;
    }
    
    .glass-nav,
    .menu-toggle,
    .theme-switch,
    .nav-overlay,
    #stars-canvas,
    .overlay-text,
    .footer-social {
        display: none !important;
    }
    
    .container {
        max-width: none;
        padding: 0;
    }
    
    .glass-card {
        border: 1px solid #ccc;
        page-break-inside: avoid;
    }
    
    h1, h2, h3 {
        page-break-after: avoid;
    }
}

/* ===============================================
   ACCESSIBILITY IMPROVEMENTS
   =============================================== */

@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;
    }
    
    #stars-canvas {
        display: none;
    }
}

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

:focus-visible {
    outline: 2px solid var(--secondary-color);
    outline-offset: 2px;
    border-radius: var(--border-radius-sm);
}

/* High contrast mode support */
@media (prefers-contrast: high) {
    :root {
        --glass-bg: rgba(255, 255, 255, 0.9);
        --glass-border: rgba(0, 0, 0, 0.5);
    }
    
    .dark-mode {
        --glass-bg: rgba(0, 0, 0, 0.9);
        --glass-border: rgba(255, 255, 255, 0.5);
    }
}