/* ==========================================================================
   Madeline Clarke Portfolio - Custom Styles
   Theme Variables & Global Styles
   ========================================================================== */

/* ==========================================================================
   1. CSS Variables & Theme Definitions
   ========================================================================== */
:root {
    /* Professional Theme (Default) */
    --color-primary: #2563eb;
    --color-primary-dark: #1d4ed8;
    --color-secondary: #1e40af;
    --color-accent: #3b82f6;
    --color-accent-light: #60a5fa;
    --color-background: #ffffff;
    --color-background-alt: #f8fafc;
    --color-text: #1f2937;
    --color-text-light: #6b7280;
    --color-border: #e5e7eb;
    --color-success: #10b981;
    --color-warning: #f59e0b;
    --color-error: #ef4444;
    --color-info: #3b82f6;
    
    /* Typography */
    --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-secondary: 'Playfair Display', Georgia, serif;
    
    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
    --spacing-2xl: 4rem;
    
    /* Border Radius */
    --radius-sm: 0.375rem;
    --radius-md: 0.75rem;
    --radius-lg: 1rem;
    --radius-xl: 1.5rem;
    --radius-2xl: 2rem;
    --radius-full: 9999px;
    
    /* Shadows */
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.1);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.1);
    --shadow-xl: 0 20px 25px rgba(0, 0, 0, 0.1);
    --shadow-2xl: 0 25px 50px rgba(0, 0, 0, 0.15);
    
    /* Transitions */
    --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-normal: 300ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 500ms cubic-bezier(0.4, 0, 0.2, 1);
    
    /* Z-index layers */
    --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;
}

/* Creative Theme Variables */
.theme-creative {
    --color-primary: #7c3aed;
    --color-primary-dark: #5b21b6;
    --color-secondary: #5b21b6;
    --color-accent: #8b5cf6;
    --color-accent-light: #a78bfa;
    --color-background: #f8fafc;
    --color-background-alt: #f1f5f9;
    --color-text: #1e293b;
    --color-text-light: #64748b;
    --color-border: #e2e8f0;
    --color-success: #10b981;
    --color-warning: #f59e0b;
    --color-error: #ef4444;
    --color-info: #3b82f6;
    
    --shadow-sm: 0 1px 3px rgba(124, 58, 237, 0.1);
    --shadow-md: 0 4px 6px rgba(124, 58, 237, 0.1);
    --shadow-lg: 0 10px 15px rgba(124, 58, 237, 0.1);
    --shadow-xl: 0 20px 25px rgba(124, 58, 237, 0.1);
    --shadow-2xl: 0 25px 50px rgba(124, 58, 237, 0.15);
}

/* Dark Mode Support */
@media (prefers-color-scheme: dark) {
    .theme-professional {
        --color-background: #111827;
        --color-background-alt: #1f2937;
        --color-text: #f3f4f6;
        --color-text-light: #d1d5db;
        --color-border: #374151;
    }
    
    .theme-creative {
        --color-background: #0f172a;
        --color-background-alt: #1e293b;
        --color-text: #e2e8f0;
        --color-text-light: #cbd5e1;
        --color-border: #334155;
    }
}

/* ==========================================================================
   2. Base Styles & Reset
   ========================================================================== */
*,
*::before,
*::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

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

body {
    font-family: var(--font-primary);
    font-weight: 400;
    line-height: 1.6;
    color: var(--color-text);
    background-color: var(--color-background);
    transition: background-color var(--transition-normal), color var(--transition-normal);
    overflow-x: hidden;
}

::selection {
    background-color: var(--color-primary);
    color: white;
}

::-webkit-scrollbar {
    width: 10px;
    height: 10px;
}

::-webkit-scrollbar-track {
    background: var(--color-background-alt);
}

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

::-webkit-scrollbar-thumb:hover {
    background: var(--color-primary-dark);
}

/* ==========================================================================
   3. Typography
   ========================================================================== */
h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-primary);
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: var(--spacing-md);
}

h1 {
    font-size: 3.5rem;
    line-height: 1.1;
}

h2 {
    font-size: 2.5rem;
}

h3 {
    font-size: 2rem;
}

h4 {
    font-size: 1.5rem;
}

h5 {
    font-size: 1.25rem;
}

h6 {
    font-size: 1rem;
}

p {
    margin-bottom: var(--spacing-md);
}

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

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

.gradient-text {
    background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    display: inline-block;
}

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

.text-gradient-creative {
    background: linear-gradient(135deg, #7c3aed, #ec4899);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* ==========================================================================
   4. Layout & Containers
   ========================================================================== */
.container {
    width: 100%;
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

.section {
    padding: var(--spacing-2xl) 0;
}

.section-title {
    position: relative;
    display: inline-block;
    margin-bottom: var(--spacing-xl);
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 4px;
    background: linear-gradient(90deg, var(--color-primary), var(--color-accent));
    border-radius: 2px;
}

.section-title-left::after {
    left: 0;
    transform: none;
}

/* ==========================================================================
   5. Buttons & Interactive Elements
   ========================================================================== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.75rem 2rem;
    font-weight: 600;
    border-radius: var(--radius-full);
    transition: all var(--transition-normal);
    border: 2px solid transparent;
    cursor: pointer;
    font-size: 1rem;
    gap: 0.5rem;
}

.btn-primary {
    background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
    color: white;
    box-shadow: var(--shadow-md);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.btn-primary:active {
    transform: translateY(0);
}

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

.btn-secondary:hover {
    background: var(--color-border);
    transform: translateY(-2px);
}

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

.btn-outline:hover {
    background: var(--color-primary);
    color: white;
    transform: translateY(-2px);
}

.btn-ghost {
    background: transparent;
    color: var(--color-text);
}

.btn-ghost:hover {
    background: var(--color-background-alt);
}

.btn-lg {
    padding: 1rem 2.5rem;
    font-size: 1.125rem;
}

.btn-sm {
    padding: 0.5rem 1.5rem;
    font-size: 0.875rem;
}

.btn-icon {
    width: 3rem;
    height: 3rem;
    padding: 0;
    border-radius: var(--radius-full);
}

/* ==========================================================================
   6. Cards
   ========================================================================== */
.card {
    background: var(--color-background);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    transition: all var(--transition-normal);
    box-shadow: var(--shadow-sm);
}

.card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
    border-color: var(--color-primary);
}

.card-gradient {
    background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
    color: white;
    border: none;
}

.card-gradient .text-gradient {
    -webkit-text-fill-color: white;
}

.card-header {
    padding-bottom: var(--spacing-md);
    margin-bottom: var(--spacing-md);
    border-bottom: 1px solid var(--color-border);
}

.card-footer {
    padding-top: var(--spacing-md);
    margin-top: var(--spacing-md);
    border-top: 1px solid var(--color-border);
}

/* ==========================================================================
   7. Navigation
   ========================================================================== */
.nav-link {
    position: relative;
    padding: var(--spacing-sm) var(--spacing-md);
    font-weight: 500;
    color: var(--color-text);
    transition: color var(--transition-fast);
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 0;
    height: 2px;
    background: linear-gradient(90deg, var(--color-primary), var(--color-accent));
    transition: width var(--transition-normal);
}

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

.nav-link:hover,
.nav-link.active {
    color: var(--color-primary);
}

.navbar {
    backdrop-filter: blur(10px);
    background: rgba(255, 255, 255, 0.8);
}

.theme-creative .navbar {
    background: rgba(248, 250, 252, 0.8);
}

@media (prefers-color-scheme: dark) {
    .navbar {
        background: rgba(17, 24, 39, 0.8);
    }
    
    .theme-creative .navbar {
        background: rgba(15, 23, 42, 0.8);
    }
}

/* ==========================================================================
   8. Forms
   ========================================================================== */
.form-group {
    margin-bottom: var(--spacing-lg);
}

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

.form-control {
    width: 100%;
    padding: 0.75rem 1rem;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    background: var(--color-background);
    color: var(--color-text);
    font-family: var(--font-primary);
    font-size: 1rem;
    transition: all var(--transition-fast);
}

.form-control:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

.theme-creative .form-control:focus {
    box-shadow: 0 0 0 3px rgba(124, 58, 237, 0.1);
}

.form-control::placeholder {
    color: var(--color-text-light);
}

textarea.form-control {
    min-height: 150px;
    resize: vertical;
}

.form-check {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
}

.form-check-input {
    width: 1.25rem;
    height: 1.25rem;
}

/* ==========================================================================
   9. Animations & Transitions
   ========================================================================== */
@keyframes fadeIn {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}

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

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

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

@keyframes slideRight {
    from {
        transform: translateX(-30px);
        opacity: 0;
    }
    to {
        transform: translateX(0);
        opacity: 1;
    }
}

@keyframes scaleIn {
    from {
        transform: scale(0.9);
        opacity: 0;
    }
    to {
        transform: scale(1);
        opacity: 1;
    }
}

@keyframes float {
    0%, 100% {
        transform: translateY(0);
    }
    50% {
        transform: translateY(-20px);
    }
}

@keyframes pulse {
    0%, 100% {
        opacity: 1;
    }
    50% {
        opacity: 0.5;
    }
}

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

@keyframes bounce {
    0%, 100% {
        transform: translateY(0);
    }
    50% {
        transform: translateY(-10px);
    }
}

@keyframes shimmer {
    0% {
        background-position: -200% center;
    }
    100% {
        background-position: 200% center;
    }
}

.animate-fade-in {
    animation: fadeIn 0.8s ease-out forwards;
}

.animate-slide-up {
    animation: slideUp 0.6s ease-out forwards;
}

.animate-slide-down {
    animation: slideDown 0.6s ease-out forwards;
}

.animate-slide-left {
    animation: slideLeft 0.6s ease-out forwards;
}

.animate-slide-right {
    animation: slideRight 0.6s ease-out forwards;
}

.animate-scale-in {
    animation: scaleIn 0.6s ease-out forwards;
}

.animate-float {
    animation: float 6s ease-in-out infinite;
}

.animate-pulse {
    animation: pulse 2s ease-in-out infinite;
}

.animate-spin {
    animation: spin 1s linear infinite;
}

.animate-bounce {
    animation: bounce 1s ease-in-out infinite;
}

.animate-shimmer {
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.2), transparent);
    background-size: 200% 100%;
    animation: shimmer 2s infinite;
}

.delay-100 {
    animation-delay: 100ms;
}

.delay-200 {
    animation-delay: 200ms;
}

.delay-300 {
    animation-delay: 300ms;
}

.delay-400 {
    animation-delay: 400ms;
}

.delay-500 {
    animation-delay: 500ms;
}

/* ==========================================================================
   10. Theme Specific Components
   ========================================================================== */
/* Professional Theme Components */
.theme-professional .experience-card {
    border-left: 4px solid var(--color-primary);
    padding-left: var(--spacing-lg);
}

.theme-professional .skill-meter {
    background: linear-gradient(90deg, var(--color-primary), var(--color-accent));
}

.theme-professional .timeline-dot {
    border-color: var(--color-primary);
    box-shadow: 0 0 0 4px rgba(37, 99, 235, 0.1);
}

/* Creative Theme Components */
.theme-creative .experience-card {
    border-radius: var(--radius-xl);
    background: linear-gradient(135deg, rgba(124, 58, 237, 0.05), rgba(139, 92, 246, 0.05));
    border: 1px solid rgba(124, 58, 237, 0.1);
}

.theme-creative .skill-meter {
    background: linear-gradient(90deg, #7c3aed, #ec4899);
}

.theme-creative .timeline-dot {
    border-color: #7c3aed;
    box-shadow: 0 0 0 4px rgba(124, 58, 237, 0.1);
}

/* ==========================================================================
   11. Utility Classes
   ========================================================================== */
.text-primary {
    color: var(--color-primary);
}

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

.text-accent {
    color: var(--color-accent);
}

.text-success {
    color: var(--color-success);
}

.text-warning {
    color: var(--color-warning);
}

.text-error {
    color: var(--color-error);
}

.text-info {
    color: var(--color-info);
}

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

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

.bg-accent {
    background-color: var(--color-accent);
}

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

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

.bg-error {
    background-color: var(--color-error);
}

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

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

.bg-gradient-creative {
    background: linear-gradient(135deg, #7c3aed, #ec4899);
}

.rounded-sm {
    border-radius: var(--radius-sm);
}

.rounded-md {
    border-radius: var(--radius-md);
}

.rounded-lg {
    border-radius: var(--radius-lg);
}

.rounded-xl {
    border-radius: var(--radius-xl);
}

.rounded-2xl {
    border-radius: var(--radius-2xl);
}

.rounded-full {
    border-radius: var(--radius-full);
}

.shadow-sm {
    box-shadow: var(--shadow-sm);
}

.shadow-md {
    box-shadow: var(--shadow-md);
}

.shadow-lg {
    box-shadow: var(--shadow-lg);
}

.shadow-xl {
    box-shadow: var(--shadow-xl);
}

.shadow-2xl {
    box-shadow: var(--shadow-2xl);
}

.transition-all {
    transition: all var(--transition-normal);
}

.transition-colors {
    transition: color var(--transition-normal), background-color var(--transition-normal);
}

.transition-transform {
    transition: transform var(--transition-normal);
}

.transition-opacity {
    transition: opacity var(--transition-normal);
}

/* ==========================================================================
   12. Footer Specific Styles
   ========================================================================== */
.footer-link {
    color: #cbd5e0;
    transition: all var(--transition-fast);
    display: inline-block;
}

.footer-link:hover {
    color: var(--color-primary);
    transform: translateX(5px);
}

.social-icon-footer {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    border-radius: var(--radius-full);
    background: rgba(255, 255, 255, 0.1);
    color: white;
    transition: all var(--transition-normal);
}

.social-icon-footer:hover {
    background: var(--color-primary);
    transform: translateY(-3px);
}

.newsletter-section {
    background: linear-gradient(135deg, rgba(37, 99, 235, 0.1), rgba(124, 58, 237, 0.1));
    border: 1px solid transparent;
    background-clip: padding-box;
    position: relative;
}

.newsletter-section::before {
    content: '';
    position: absolute;
    top: 0;
    right: 0;
    bottom: 0;
    left: 0;
    z-index: -1;
    margin: -1px;
    border-radius: inherit;
    background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
}

.theme-creative .newsletter-section {
    background: linear-gradient(135deg, rgba(124, 58, 237, 0.1), rgba(236, 72, 153, 0.1));
}

/* ==========================================================================
   13. Contact Form Styles
   ========================================================================== */
.contact-form .form-control:focus {
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

.theme-creative .contact-form .form-control:focus {
    box-shadow: 0 0 0 3px rgba(124, 58, 237, 0.1);
}

.contact-info-item {
    transition: transform var(--transition-normal);
}

.contact-info-item:hover {
    transform: translateX(5px);
}

/* ==========================================================================
   14. Portfolio & Projects
   ========================================================================== */
.project-card {
    position: relative;
    overflow: hidden;
    border-radius: var(--radius-lg);
}

.project-card::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(to top, rgba(0,0,0,0.8), transparent);
    opacity: 0;
    transition: opacity var(--transition-normal);
    z-index: 1;
}

.project-card:hover::before {
    opacity: 1;
}

.project-content {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    padding: var(--spacing-lg);
    transform: translateY(100%);
    transition: transform var(--transition-normal);
    z-index: 2;
}

.project-card:hover .project-content {
    transform: translateY(0);
}

/* ==========================================================================
   15. Loading States
   ========================================================================== */
.loading-spinner {
    width: 2rem;
    height: 2rem;
    border: 3px solid var(--color-border);
    border-top-color: var(--color-primary);
    border-radius: var(--radius-full);
    animation: spin 1s linear infinite;
}

.loading-shimmer {
    background: linear-gradient(90deg, var(--color-border) 25%, var(--color-background-alt) 50%, var(--color-border) 75%);
    background-size: 200% 100%;
    animation: shimmer 2s infinite;
}

/* ==========================================================================
   16. Toast & Notifications
   ========================================================================== */
.toast {
    position: fixed;
    top: var(--spacing-lg);
    right: var(--spacing-lg);
    padding: var(--spacing-md) var(--spacing-lg);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-xl);
    z-index: var(--z-toast);
    transform: translateX(100%);
    transition: transform var(--transition-normal);
}

.toast.show {
    transform: translateX(0);
}

.toast-success {
    background: var(--color-success);
    color: white;
}

.toast-error {
    background: var(--color-error);
    color: white;
}

.toast-warning {
    background: var(--color-warning);
    color: white;
}

.toast-info {
    background: var(--color-info);
    color: white;
}

/* ==========================================================================
   17. Modal & Dialog
   ========================================================================== */
.modal-backdrop {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.5);
    backdrop-filter: blur(4px);
    z-index: var(--z-modal-backdrop);
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-normal);
}

.modal-backdrop.show {
    opacity: 1;
    visibility: visible;
}

.modal {
    position: fixed;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%) scale(0.9);
    background: var(--color-background);
    border-radius: var(--radius-lg);
    padding: var(--spacing-xl);
    max-width: 90vw;
    max-height: 90vh;
    overflow-y: auto;
    z-index: var(--z-modal);
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-normal);
    box-shadow: var(--shadow-2xl);
}

.modal.show {
    opacity: 1;
    visibility: visible;
    transform: translate(-50%, -50%) scale(1);
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-lg);
    padding-bottom: var(--spacing-md);
    border-bottom: 1px solid var(--color-border);
}

.modal-close {
    background: none;
    border: none;
    color: var(--color-text-light);
    cursor: pointer;
    font-size: 1.5rem;
    line-height: 1;
    padding: var(--spacing-xs);
    transition: color var(--transition-fast);
}

.modal-close:hover {
    color: var(--color-error);
}

/* ==========================================================================
   18. Responsive Design
   ========================================================================== */
@media (max-width: 768px) {
    html {
        font-size: 14px;
    }
    
    h1 {
        font-size: 2.5rem;
    }
    
    h2 {
        font-size: 2rem;
    }
    
    h3 {
        font-size: 1.5rem;
    }
    
    .section {
        padding: var(--spacing-xl) 0;
    }
    
    .container {
        padding: 0 var(--spacing-sm);
    }
    
    .btn {
        padding: 0.625rem 1.5rem;
    }
    
    .card {
        padding: var(--spacing-md);
    }
    
    .footer-link:hover {
        transform: translateX(0);
    }
    
    .modal {
        padding: var(--spacing-lg);
        max-width: 95vw;
    }
}

@media (max-width: 480px) {
    html {
        font-size: 12px;
    }
    
    h1 {
        font-size: 2rem;
    }
    
    h2 {
        font-size: 1.75rem;
    }
    
    .btn {
        width: 100%;
        justify-content: center;
    }
}

/* ==========================================================================
   19. Print Styles
   ========================================================================== */
@media print {
    .no-print {
        display: none !important;
    }
    
    body {
        color: #000;
        background: #fff;
    }
    
    a {
        color: #000;
        text-decoration: underline;
    }
    
    .btn {
        display: none;
    }
    
    .navbar, .footer {
        display: none;
    }
}

/* ==========================================================================
   20. Accessibility
   ========================================================================== */
.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\:outline-none:focus {
    outline: 2px solid var(--color-primary);
    outline-offset: 2px;
}

/* ==========================================================================
   21. Custom Scroll Animations
   ========================================================================== */
.scroll-reveal {
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.8s cubic-bezier(0.4, 0, 0.2, 1);
}

.scroll-reveal.active {
    opacity: 1;
    transform: translateY(0);
}

/* ==========================================================================
   22. Particle Background Effect
   ========================================================================== */
.particles {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 0;
}

.particle {
    position: absolute;
    background: var(--color-primary);
    border-radius: var(--radius-full);
    opacity: 0.3;
}

/* ==========================================================================
   23. Glass Morphism Effects
   ========================================================================== */
.glass {
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.dark .glass {
    background: rgba(0, 0, 0, 0.2);
    border: 1px solid rgba(255, 255, 255, 0.1);
}

/* ==========================================================================
   24. Theme Transition Overlay
   ========================================================================== */
.theme-transition-overlay {
    position: fixed;
    inset: 0;
    background: var(--color-background);
    z-index: var(--z-modal);
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-normal);
    pointer-events: none;
}

.theme-transition-overlay.active {
    opacity: 1;
    visibility: visible;
}