/* Reset and Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

/* Nuclear reset for navigation */
nav, nav *, nav ul, nav li, nav a, 
.nav, .nav *, .nav li, .nav a,
.nav-link, .nav-link * {
    background: transparent !important;
    border: none !important;
    outline: none !important;
    box-shadow: none !important;
    padding: 0 !important;
    margin: 0 !important;
    list-style: none !important;
    text-decoration: none !important;
    border-radius: 0 !important;
}

/* Remove browser default focus styles */
*:focus,
*:focus-visible,
a:focus,
a:focus-visible,
button:focus,
button:focus-visible {
    outline: none !important;
    box-shadow: none !important;
    border: none !important;
    background: transparent !important;
}

/* Remove browser default button styles */
button {
    background: transparent;
    border: none;
    outline: none;
    box-shadow: none;
}

/* Remove browser default link styles */
a {
    text-decoration: none;
    outline: none;
    border: none;
    background: transparent;
}

:root {
    /* Light Mode Colors */
    --primary-color: #2563eb;
    --primary-dark: #1d4ed8;
    --secondary-color: #64748b;
    --accent-color: #f59e0b;
    --text-primary: #1e293b;
    --text-secondary: #64748b;
    --text-light: #94a3b8;
    --background: #ffffff;
    --background-light: #f8fafc;
    --border-color: #e2e8f0;
    --success-color: #10b981;
    --warning-color: #f59e0b;
    --error-color: #ef4444;
    
    /* Shadows */
    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
    --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
    --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.1), 0 8px 10px -6px rgb(0 0 0 / 0.1);
    
    /* Typography */
    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 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 */
    --space-1: 0.25rem;
    --space-2: 0.5rem;
    --space-3: 0.75rem;
    --space-4: 1rem;
    --space-5: 1.25rem;
    --space-6: 1.5rem;
    --space-8: 2rem;
    --space-10: 2.5rem;
    --space-12: 3rem;
    --space-16: 4rem;
    --space-20: 5rem;
    
    /* Border Radius */
    --radius-sm: 0.125rem;
    --radius-md: 0.375rem;
    --radius-lg: 0.5rem;
    --radius-xl: 0.75rem;
    --radius-2xl: 1rem;
    
    /* Transitions */
    --transition-fast: 150ms ease-in-out;
    --transition-normal: 250ms ease-in-out;
    --transition-slow: 350ms ease-in-out;
}

/* Dark Mode Colors */
[data-theme="dark"] {
    --primary-color: #3b82f6;
    --primary-dark: #2563eb;
    --primary-light: #60a5fa;
    --primary-hover: #2563eb;
    --secondary-color: #94a3b8;
    --accent-color: #fbbf24;
    --text-primary: #f1f5f9;
    --text-secondary: #cbd5e1;
    --text-light: #64748b;
    --background: #0f172a;
    --background-light: #1e293b;
    --background-primary: #0f172a;
    --border-color: #334155;
    --success-color: #22c55e;
    --warning-color: #fbbf24;
    --error-color: #f87171;
    
    /* Dark mode shadows */
    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.3);
    --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.4), 0 2px 4px -2px rgb(0 0 0 / 0.3);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.4), 0 4px 6px -4px rgb(0 0 0 / 0.3);
    --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.4), 0 8px 10px -6px rgb(0 0 0 / 0.3);
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-family);
    font-size: var(--font-size-base);
    line-height: 1.6;
    color: var(--text-primary);
    background-color: var(--background);
    transition: background-color var(--transition-normal), color var(--transition-normal);
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
    font-weight: 600;
    line-height: 1.2;
    margin-bottom: var(--space-4);
}

h1 { font-size: var(--font-size-4xl); }
h2 { font-size: var(--font-size-3xl); }
h3 { font-size: var(--font-size-2xl); }
h4 { font-size: var(--font-size-xl); }
h5 { font-size: var(--font-size-lg); }
h6 { font-size: var(--font-size-base); }

p {
    margin-bottom: var(--space-4);
    color: var(--text-secondary);
}

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

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

a:focus,
a:focus-visible {
    outline: none;
    box-shadow: none;
    border: none;
}

/* Remove browser default button/link styling */
button:focus,
button:focus-visible,
a:focus,
a:focus-visible {
    outline: none !important;
    box-shadow: none !important;
    border: none !important;
}

/* Container */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--space-6);
}

@media (max-width: 768px) {
    .container {
        padding: 0 var(--space-4);
    }
}

/* Sections */
section {
    padding: var(--space-20) 0;
}

.section-title {
    text-align: center;
    margin-bottom: var(--space-16);
    position: relative;
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: -var(--space-3);
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 3px;
    background: linear-gradient(90deg, var(--primary-color), var(--accent-color));
    border-radius: var(--radius-lg);
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: var(--space-3) var(--space-6);
    font-size: var(--font-size-base);
    font-weight: 500;
    border: none;
    border-radius: var(--radius-lg);
    cursor: pointer;
    text-decoration: none;
    transition: all var(--transition-normal);
    position: relative;
    overflow: hidden;
}

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

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

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

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

/* Grid Layouts */
.grid-2 {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-8);
}

.grid-3 {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-8);
}

.grid-4 {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--space-6);
}

@media (max-width: 1024px) {
    .grid-4 {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .grid-2,
    .grid-3,
    .grid-4 {
        grid-template-columns: 1fr;
    }
}

/* Utility Classes */
.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }

.mt-0 { margin-top: 0; }
.mt-4 { margin-top: var(--space-4); }
.mt-8 { margin-top: var(--space-8); }
.mb-0 { margin-bottom: 0; }
.mb-4 { margin-bottom: var(--space-4); }
.mb-8 { margin-bottom: var(--space-8); }

.hidden { display: none; }
.visible { display: block; }

/* Animations */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

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

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

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

.animate-fadeInUp {
    animation: fadeInUp 0.6s ease-out;
}

.animate-fadeIn {
    animation: fadeIn 0.6s ease-out;
}

.animate-slideInLeft {
    animation: slideInLeft 0.6s ease-out;
}

.animate-slideInRight {
    animation: slideInRight 0.6s ease-out;
}

/* Forms */
input, textarea, select {
    width: 100%;
    padding: var(--space-3) var(--space-4);
    border: 2px solid var(--border-color);
    border-radius: var(--radius-lg);
    font-family: inherit;
    font-size: var(--font-size-base);
    transition: border-color var(--transition-fast);
    background: var(--background);
}

input:focus, textarea:focus, select:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgb(37 99 235 / 0.1);
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-4);
    margin-bottom: var(--space-4);
}

@media (max-width: 768px) {
    .form-row {
        grid-template-columns: 1fr;
    }
}

/* Loading States */
.loading {
    position: relative;
    pointer-events: none;
}

.loading::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 20px;
    height: 20px;
    margin: -10px 0 0 -10px;
    border: 2px solid #f3f3f3;
    border-top: 2px solid var(--primary-color);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* Dark Mode Specific Enhancements */
[data-theme="dark"] {
    color-scheme: dark;
}

[data-theme="dark"] .hero {
    background: linear-gradient(135deg, #1e293b 0%, #0f172a 100%);
}

[data-theme="dark"] .hero-title {
    background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

[data-theme="dark"] input:focus,
[data-theme="dark"] textarea:focus,
[data-theme="dark"] select:focus {
    box-shadow: 0 0 0 3px rgb(59 130 246 / 0.2);
}

[data-theme="dark"] .nav {
    background: var(--background-light);
}

/* Dark Mode Contact Section */
[data-theme="dark"] .contact {
    background: var(--background);
}

[data-theme="dark"] .contact-content {
    background: var(--background-light);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-xl);
    padding: var(--space-8);
    margin-top: var(--space-8);
}

[data-theme="dark"] .contact-info h3 {
    color: var(--text-primary);
}

[data-theme="dark"] .contact-info p {
    color: var(--text-secondary);
}

/* Theme transition - more specific */
body,
.header,
.hero,
.nav,
input,
textarea,
select,
button,
.service-card,
.team-member,
.contact-form {
    transition: background-color var(--transition-normal), 
                color var(--transition-normal), 
                border-color var(--transition-normal);
}

/* Theme toggle button animation */
@keyframes theme-switch {
    0% { transform: rotate(0deg) scale(1); }
    50% { transform: rotate(180deg) scale(1.2); }
    100% { transform: rotate(360deg) scale(1); }
}

.theme-toggle-animating {
    animation: theme-switch 0.6s ease-in-out;
}

/* Dark Mode Styles for Form Elements */
[data-theme="dark"] input,
[data-theme="dark"] textarea,
[data-theme="dark"] select {
    background: var(--background-light);
    border: 1px solid var(--border-color);
    color: var(--text-primary);
}

[data-theme="dark"] input:focus,
[data-theme="dark"] textarea:focus,
[data-theme="dark"] select:focus {
    border-color: var(--primary-color);
    outline: none;
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
}

[data-theme="dark"] input::placeholder,
[data-theme="dark"] textarea::placeholder {
    color: var(--text-secondary);
}

/* Dark Mode Styles for General Elements */
[data-theme="dark"] .section-title {
    color: var(--text-primary);
}

[data-theme="dark"] h1,
[data-theme="dark"] h2,
[data-theme="dark"] h3,
[data-theme="dark"] h4,
[data-theme="dark"] h5,
[data-theme="dark"] h6 {
    color: var(--text-primary);
}

[data-theme="dark"] p {
    color: var(--text-secondary);
}

[data-theme="dark"] a {
    color: var(--primary-color);
}

[data-theme="dark"] a:hover {
    color: var(--primary-dark);
}

/* Dark Mode Button Styles */
[data-theme="dark"] .btn-secondary {
    background: transparent;
    color: var(--primary-color);
    border: 2px solid var(--primary-color);
}

[data-theme="dark"] .btn-secondary:hover {
    background: var(--primary-color);
    color: white;
}

[data-theme="dark"] .btn-primary {
    background: var(--primary-color);
    color: white;
    border: 2px solid var(--primary-color);
}

[data-theme="dark"] .btn-primary:hover {
    background: var(--primary-hover);
    border-color: var(--primary-hover);
}

[data-theme="dark"] .btn-outline {
    background: transparent;
    color: var(--text-primary);
    border: 2px solid var(--border-color);
}

[data-theme="dark"] .btn-outline:hover {
    background: var(--primary-color);
    color: white;
    border-color: var(--primary-color);
}