/* ==========================================================================
   Ethercube Consulting - Modern CSS Framework
   ========================================================================== */

/* CSS Custom Properties (Variables) */
:root {
    /* Colors */
    --primary-color: #2563eb;
    --primary-hover: #1d4ed8;
    --secondary-color: #64748b;
    --accent-color: #0ea5e9;
    --success-color: #10b981;
    --warning-color: #f59e0b;
    --error-color: #ef4444;
    
    /* Neutral Colors */
    --white: #ffffff;
    --gray-50: #f8fafc;
    --gray-100: #f1f5f9;
    --gray-200: #e2e8f0;
    --gray-300: #cbd5e1;
    --gray-400: #94a3b8;
    --gray-500: #64748b;
    --gray-600: #475569;
    --gray-700: #334155;
    --gray-800: #1e293b;
    --gray-900: #0f172a;
    
    /* 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;
    --space-24: 6rem;
    
    /* Breakpoints */
    --breakpoint-sm: 640px;
    --breakpoint-md: 768px;
    --breakpoint-lg: 1024px;
    --breakpoint-xl: 1280px;
    
    /* Shadows */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
    
    /* Border Radius */
    --radius-sm: 0.25rem;
    --radius-md: 0.375rem;
    --radius-lg: 0.5rem;
    --radius-xl: 0.75rem;
    --radius-2xl: 1rem;
    
    /* Transitions */
    --transition-fast: 150ms ease-in-out;
    --transition-normal: 200ms ease-in-out;
    --transition-slow: 300ms ease-in-out;
}

/* ==========================================================================
   Reset & Base Styles
   ========================================================================== */

* {
    box-sizing: border-box;
}

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

body {
    margin: 0;
    font-family: var(--font-family);
    font-size: var(--font-size-base);
    line-height: 1.6;
    color: var(--gray-800);
    background-color: var(--gray-50);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

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

/* ==========================================================================
   Typography
   ========================================================================== */

h1, h2, h3, h4, h5, h6 {
    margin: 0 0 var(--space-4) 0;
    font-weight: 600;
    line-height: 1.2;
    color: var(--gray-900);
}

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: 0 0 var(--space-4) 0;
}

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

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

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

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--space-4);
}

.grid {
    display: grid;
    gap: var(--space-6);
    align-items: stretch;
}

/* Ensure service cards in homepage grid have equal heights */
.services .grid {
    align-items: stretch;
}

.services .grid .service-card {
    height: 100%;
}

@media (min-width: 640px) {
    .grid-sm-2 { grid-template-columns: repeat(2, 1fr); }
    .grid-sm-3 { grid-template-columns: repeat(3, 1fr); }
}

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

@media (min-width: 1024px) {
    .grid-lg-2 { grid-template-columns: repeat(2, 1fr); }
    .grid-lg-3 { grid-template-columns: repeat(3, 1fr); }
    .grid-lg-4 { grid-template-columns: repeat(4, 1fr); }
}

/* ==========================================================================
   Header & Navigation
   ========================================================================== */

.site-header {
    background: var(--gray-900);
    color: var(--white);
    position: sticky;
    top: 0;
    z-index: 100;
    box-shadow: var(--shadow-md);
}

.header-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--space-4) 0;
    position: relative;
}

.logo a {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    color: var(--white);
    text-decoration: none;
    font-weight: 600;
    font-size: var(--font-size-xl);
}

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

.mobile-menu-toggle {
    display: none;
    flex-direction: column;
    background: none;
    border: none;
    cursor: pointer;
    padding: var(--space-2);
    border-radius: var(--radius-md);
}

.hamburger-line {
    width: 25px;
    height: 3px;
    background-color: var(--white);
    margin: 2px 0;
    transition: var(--transition-normal);
    border-radius: 2px;
}

.main-navigation ul {
    display: flex;
    list-style: none;
    margin: 0;
    padding: 0;
    gap: var(--space-6);
    align-items: center;
}

.main-navigation a {
    color: var(--white);
    text-decoration: none;
    padding: var(--space-2) var(--space-3);
    border-radius: var(--radius-md);
    transition: var(--transition-fast);
    font-weight: 500;
}

.main-navigation a:hover,
.main-navigation a[aria-current="page"] {
    background: var(--gray-800);
    color: var(--white);
}

.btn-contact {
    background: var(--primary-color) !important;
    color: var(--white) !important;
}

.btn-contact:hover {
    background: var(--primary-hover) !important;
}

/* Mobile Navigation */
@media (max-width: 768px) {
    .mobile-menu-toggle {
        display: flex;
    }
    
    .main-navigation {
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: var(--gray-900);
        transform: translateY(-100%);
        opacity: 0;
        visibility: hidden;
        transition: all var(--transition-normal);
        border-top: 1px solid var(--gray-800);
    }
    
    .main-navigation.is-open {
        transform: translateY(0);
        opacity: 1;
        visibility: visible;
    }
    
    .main-navigation ul {
        flex-direction: column;
        padding: var(--space-4);
        gap: var(--space-2);
        align-items: stretch;
    }
    
    .main-navigation a {
        display: block;
        padding: var(--space-3) var(--space-4);
    }
}

/* ==========================================================================
   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;
    text-decoration: none;
    border: none;
    border-radius: var(--radius-lg);
    cursor: pointer;
    transition: all var(--transition-fast);
    gap: var(--space-2);
}

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

.btn-primary:hover {
    background: var(--primary-hover);
    color: var(--white);
    transform: translateY(-1px);
    box-shadow: var(--shadow-lg);
}

.btn-secondary {
    background: var(--gray-600);
    color: var(--white);
}

.btn-secondary:hover {
    background: var(--gray-700);
    color: var(--white);
}

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

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

.btn-lg {
    padding: var(--space-4) var(--space-8);
    font-size: var(--font-size-lg);
}

.btn-sm {
    padding: var(--space-2) var(--space-4);
    font-size: var(--font-size-sm);
}

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

.card {
    background: var(--white);
    border-radius: var(--radius-2xl);
    padding: var(--space-6);
    box-shadow: var(--shadow-md);
    transition: all var(--transition-normal);
    border: 1px solid var(--gray-200);
    display: flex;
    flex-direction: column;
    height: 100%;
}

.card:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-xl);
}

.card img {
    width: 100%;
    height: 200px;
    object-fit: cover;
    border-radius: var(--radius-lg);
    margin-bottom: var(--space-4);
}

.card h3 {
    margin-bottom: var(--space-2);
    color: var(--gray-900);
}

/* General service card headings */
.service-card h3 {
    margin-bottom: var(--space-3);
    color: var(--gray-900);
    text-align: center;
}

/* Homepage specific service card headings */
.services .service-card h3 {
    grid-area: title;
    display: flex;
    align-items: center;
    justify-content: center;
    width: 100%;
    line-height: 1.3;
    margin: 0;
    padding: 0;
}

.card p {
    color: var(--gray-600);
    margin-bottom: var(--space-4);
}

/* General service card paragraphs */
.service-card p {
    color: var(--gray-600);
    margin-bottom: var(--space-4);
    text-align: center;
    line-height: 1.6;
}

/* Homepage specific service card paragraphs */
.services .service-card p {
    grid-area: description;
    display: flex;
    align-items: center;
    justify-content: center;
    width: 100%;
    margin: 0;
    padding: var(--space-2);
    text-align: center;
    line-height: 1.6;
    height: 100%;
}

/* ==========================================================================
   Forms
   ========================================================================== */

.form-group {
    margin-bottom: var(--space-4);
}

.form-label {
    display: block;
    margin-bottom: var(--space-2);
    font-weight: 500;
    color: var(--gray-700);
}

.form-input,
.form-select,
.form-textarea {
    width: 100%;
    padding: var(--space-3) var(--space-4);
    border: 1px solid var(--gray-300);
    border-radius: var(--radius-lg);
    font-size: var(--font-size-base);
    transition: all var(--transition-fast);
    background: var(--white);
}

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

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

.form-error {
    color: var(--error-color);
    font-size: var(--font-size-sm);
    margin-top: var(--space-1);
}

.form-success {
    color: var(--success-color);
    font-size: var(--font-size-sm);
    margin-top: var(--space-1);
}

/* ==========================================================================
   Hero Section
   ========================================================================== */

.hero {
    background: linear-gradient(135deg, var(--gray-900) 0%, var(--gray-800) 100%);
    color: var(--white);
    padding: var(--space-20) 0;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(45deg, rgba(37, 99, 235, 0.05) 0%, rgba(59, 130, 246, 0.1) 100%);
    opacity: 0.8;
    z-index: 1;
}

.hero-content {
    position: relative;
    z-index: 2;
}

.hero h1 {
    font-size: clamp(var(--font-size-3xl), 5vw, var(--font-size-5xl));
    margin-bottom: var(--space-4);
    color: var(--white);
    font-weight: 700;
}

.hero p {
    font-size: var(--font-size-xl);
    margin-bottom: var(--space-8);
    color: var(--gray-300);
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

/* ==========================================================================
   Section Headers
   ========================================================================== */

.section-header {
    text-align: center;
    margin-bottom: var(--space-12);
}

.section-header h2 {
    font-size: var(--font-size-4xl);
    margin-bottom: var(--space-4);
    color: var(--gray-900);
}

.section-subtitle {
    font-size: var(--font-size-lg);
    color: var(--gray-600);
    max-width: 600px;
    margin: 0 auto;
}

/* ==========================================================================
   Hero Actions
   ========================================================================== */

.hero-actions {
    display: flex;
    gap: var(--space-4);
    justify-content: center;
    align-items: center;
    flex-wrap: wrap;
    margin-top: var(--space-8);
}

/* ==========================================================================
   Services Section
   ========================================================================== */

.services {
    padding: var(--space-20) 0;
    background: var(--white);
}

/* Homepage service cards - specific styling */
.services .service-card {
    text-align: center;
    position: relative;
    display: grid;
    grid-template-rows: 120px 80px 150px 1fr 60px;
    grid-template-areas: 
        "icon"
        "title"  
        "description"
        "features"
        "button";
    gap: var(--space-5);
    align-items: stretch;
    min-height: 500px;
}

/* Fallback for other service cards */
.service-card {
    text-align: center;
    position: relative;
}

.services .service-card .btn {
    grid-area: button;
    align-self: center;
    justify-self: center;
    margin: 0;
}

.service-icon {
    display: flex;
    justify-content: center;
    align-items: center;
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
    border-radius: 50%;
    margin: 0 auto var(--space-4);
    color: var(--white);
    flex-shrink: 0;
}

.services .service-card .service-icon {
    grid-area: icon;
    align-self: center;
    margin: 0 auto;
}

.service-features {
    list-style: none;
    padding: 0;
    margin: var(--space-4) 0;
    text-align: left;
    width: 100%;
}

.services .service-card .service-features {
    grid-area: features;
    margin: var(--space-4) 0 0 0;
    display: flex;
    flex-direction: column;
    justify-content: flex-start;
}

.service-features li {
    padding: var(--space-1) 0;
    color: var(--gray-600);
    position: relative;
    padding-left: 1.5rem;
    line-height: 1.6;
    display: block;
    text-align: left;
}

.service-features li::before {
    content: '✓';
    position: absolute;
    left: 0;
    top: 0.125rem;
    color: var(--success-color);
    font-weight: bold;
    font-size: 0.875rem;
    line-height: 1.6;
}

/* ==========================================================================
   Services Page Layout
   ========================================================================== */

.services-hero {
    padding: var(--space-16) 0;
    background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
    color: var(--white);
    text-align: center;
}

.services-hero h1 {
    color: var(--white);
    margin-bottom: var(--space-4);
}

.services-hero p {
    color: var(--white);
    font-size: var(--font-size-lg);
    opacity: 0.9;
}

.services-overview {
    padding: var(--space-20) 0;
    background: var(--gray-50);
}

.services-grid {
    display: flex;
    flex-direction: column;
    gap: var(--space-16);
}

.service-detail-card {
    background: var(--white);
    border-radius: var(--radius-2xl);
    padding: var(--space-8);
    box-shadow: var(--shadow-lg);
    border: 1px solid var(--gray-200);
}

.service-header {
    text-align: center;
    margin-bottom: var(--space-8);
    padding-bottom: var(--space-6);
    border-bottom: 1px solid var(--gray-200);
}

.service-header .service-icon {
    margin-bottom: var(--space-6);
}

.service-header h2 {
    color: var(--gray-900);
    margin-bottom: var(--space-3);
    font-size: var(--font-size-3xl);
}

.service-subtitle {
    color: var(--gray-600);
    font-size: var(--font-size-lg);
    line-height: 1.6;
}

.service-content {
    display: grid;
    gap: var(--space-8);
}

.service-description h3,
.service-features h3,
.service-benefits h3 {
    color: var(--gray-900);
    margin-bottom: var(--space-4);
    font-size: var(--font-size-xl);
}

.service-description p {
    color: var(--gray-600);
    line-height: 1.7;
    margin-bottom: var(--space-4);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--space-6);
    margin-top: var(--space-6);
}

.feature {
    background: var(--gray-50);
    padding: var(--space-6);
    border-radius: var(--radius-lg);
    border: 1px solid var(--gray-200);
}

.feature h4 {
    color: var(--primary-color);
    margin-bottom: var(--space-3);
    font-size: var(--font-size-lg);
}

.feature p {
    color: var(--gray-600);
    line-height: 1.6;
    margin: 0;
}

.service-benefits {
    margin-top: var(--space-6);
}

.benefits-list {
    list-style: none;
    padding: 0;
    margin: 0;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--space-4);
}

.benefits-list li {
    display: flex;
    align-items: flex-start;
    padding: var(--space-3);
    background: var(--white);
    border-radius: var(--radius-md);
    border: 1px solid var(--gray-200);
}

.benefits-list li::before {
    content: '✓';
    color: var(--success-color);
    font-weight: bold;
    margin-right: var(--space-3);
    font-size: var(--font-size-lg);
    flex-shrink: 0;
}

@media (min-width: 768px) {
    .service-content {
        grid-template-columns: 2fr 1fr;
        gap: var(--space-12);
    }
    
    .features-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (min-width: 1024px) {
    .features-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

/* ==========================================================================
   Why Choose Us Section
   ========================================================================== */

.why-choose-us {
    padding: var(--space-20) 0;
    background: var(--gray-50);
}

.feature-item {
    text-align: center;
    padding: var(--space-6);
}

.feature-number {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 60px;
    height: 60px;
    background: var(--primary-color);
    color: var(--white);
    border-radius: 50%;
    font-size: var(--font-size-xl);
    font-weight: 700;
    margin-bottom: var(--space-4);
}

.feature-item h3 {
    margin-bottom: var(--space-2);
    color: var(--gray-900);
}

.feature-item p {
    color: var(--gray-600);
    margin: 0;
}

/* ==========================================================================
   CTA Section
   ========================================================================== */

.cta-section {
    padding: var(--space-20) 0;
    background: linear-gradient(135deg, var(--gray-900), var(--gray-800));
    color: var(--white);
    text-align: center;
}

.cta-content h2 {
    font-size: var(--font-size-4xl);
    margin-bottom: var(--space-4);
    color: var(--white);
}

.cta-content p {
    font-size: var(--font-size-lg);
    color: var(--gray-300);
    max-width: 600px;
    margin: 0 auto var(--space-8);
}

.cta-actions {
    display: flex;
    gap: var(--space-4);
    justify-content: center;
    align-items: center;
    flex-wrap: wrap;
}

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

.site-footer {
    background: var(--gray-900);
    color: var(--gray-300);
    padding: var(--space-16) 0 var(--space-8) 0;
}

.footer-content {
    display: grid;
    gap: var(--space-8);
    margin-bottom: var(--space-12);
}

@media (min-width: 768px) {
    .footer-content {
        grid-template-columns: repeat(2, 1fr);
    }
}

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

.footer-section h3 {
    color: var(--white);
    margin-bottom: var(--space-4);
    font-size: var(--font-size-lg);
}

.footer-links {
    list-style: none;
    padding: 0;
    margin: 0;
}

.footer-links li {
    margin-bottom: var(--space-2);
}

.footer-links a {
    color: var(--gray-400);
    transition: color var(--transition-fast);
}

.footer-links a:hover {
    color: var(--white);
}

.footer-bottom {
    border-top: 1px solid var(--gray-800);
    padding-top: var(--space-8);
    text-align: center;
}

.footer-bottom p {
    margin: 0;
    color: var(--gray-400);
}

.powered-by {
    margin-top: var(--space-2) !important;
    font-size: var(--font-size-sm);
}

/* ==========================================================================
   Contact Page
   ========================================================================== */

.contact-hero {
    padding: var(--space-16) 0;
    background: linear-gradient(135deg, var(--gray-900), var(--gray-800));
    color: var(--white);
    text-align: center;
}

.contact-hero h1 {
    color: var(--white);
}

.contact-content {
    padding: var(--space-20) 0;
    background: var(--white);
}

.contact-grid {
    display: grid;
    gap: var(--space-12);
    align-items: start;
}

@media (min-width: 1024px) {
    .contact-grid {
        grid-template-columns: 1fr 1.5fr;
    }
}

.contact-info h2 {
    margin-bottom: var(--space-4);
    color: var(--gray-900);
}

.contact-methods {
    margin: var(--space-8) 0;
}

.contact-method {
    display: flex;
    gap: var(--space-4);
    align-items: flex-start;
    padding: var(--space-6);
    background: var(--gray-50);
    border-radius: var(--radius-xl);
    margin-bottom: var(--space-4);
}

.method-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 48px;
    height: 48px;
    background: var(--primary-color);
    border-radius: 50%;
    color: var(--white);
    flex-shrink: 0;
}

.method-content h3 {
    margin: 0 0 var(--space-1) 0;
    color: var(--gray-900);
}

.method-content p {
    margin: 0 0 var(--space-1) 0;
}

.method-content a {
    font-weight: 500;
    color: var(--primary-color);
}

.response-time {
    font-size: var(--font-size-sm);
    color: var(--gray-600);
}

.consultation-benefits {
    background: var(--gray-50);
    padding: var(--space-6);
    border-radius: var(--radius-xl);
    margin-top: var(--space-8);
}

.consultation-benefits h3 {
    margin-bottom: var(--space-4);
    color: var(--gray-900);
}

.consultation-benefits ul {
    list-style: none;
    padding: 0;
    margin: 0;
}

.consultation-benefits li {
    padding: var(--space-2) 0;
    padding-left: var(--space-6);
    position: relative;
    color: var(--gray-700);
}

.consultation-benefits li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: var(--success-color);
    font-weight: bold;
}

.contact-form-container {
    background: var(--white);
    border: 1px solid var(--gray-200);
    border-radius: var(--radius-2xl);
    padding: var(--space-8);
    box-shadow: var(--shadow-lg);
}

.form-row {
    display: grid;
    gap: var(--space-4);
}

@media (min-width: 640px) {
    .form-row {
        grid-template-columns: 1fr 1fr;
    }
}

.form-actions {
    text-align: center;
    margin-top: var(--space-6);
}

.form-note {
    margin-top: var(--space-4);
    font-size: var(--font-size-sm);
    color: var(--gray-600);
}

/* ==========================================================================
   Alerts
   ========================================================================== */

.alert {
    display: flex;
    align-items: flex-start;
    gap: var(--space-3);
    padding: var(--space-4);
    border-radius: var(--radius-lg);
    margin-bottom: var(--space-6);
    border: 1px solid;
}

.alert-success {
    background: rgba(16, 185, 129, 0.1);
    border-color: var(--success-color);
    color: #047857;
}

.alert-error {
    background: rgba(239, 68, 68, 0.1);
    border-color: var(--error-color);
    color: #b91c1c;
}

.alert svg {
    flex-shrink: 0;
    margin-top: 2px;
}

.alert ul {
    margin: 0;
    padding-left: var(--space-4);
}

.alert li {
    margin-bottom: var(--space-1);
}

/* ==========================================================================
   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; }
.block { display: block; }
.flex { display: flex; }
.grid { display: grid; }

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

@media (max-width: 640px) {
    .container {
        padding: 0 var(--space-3);
    }
    
    .hero {
        padding: var(--space-12) 0;
    }
    
    .services,
    .site-footer {
        padding-top: var(--space-12);
        padding-bottom: var(--space-12);
    }
}

/* ==========================================================================
   JavaScript Enhancement Styles
   ========================================================================== */

/* Form validation states */
.form-input.error,
.form-select.error,
.form-textarea.error {
    border-color: var(--error-color);
    box-shadow: 0 0 0 3px rgba(239, 68, 68, 0.1);
}

/* Loading animations */
.animate-spin {
    animation: spin 1s linear infinite;
}

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

/* Lazy loading images */
img.lazy {
    opacity: 0;
    transition: opacity var(--transition-normal);
}

img.lazy:not(.loaded) {
    background: var(--gray-200);
}

/* Scroll animations */
.fade-in,
.slide-up,
.slide-in-left,
.slide-in-right {
    opacity: 0;
    transition: all 0.6s ease-out;
}

.fade-in.animate {
    opacity: 1;
}

.slide-up {
    transform: translateY(30px);
}

.slide-up.animate {
    opacity: 1;
    transform: translateY(0);
}

.slide-in-left {
    transform: translateX(-30px);
}

.slide-in-left.animate {
    opacity: 1;
    transform: translateX(0);
}

.slide-in-right {
    transform: translateX(30px);
}

.slide-in-right.animate {
    opacity: 1;
    transform: translateX(0);
}

/* Table enhancements */
.table-container {
    overflow-x: auto;
    border-radius: var(--radius-lg);
    border: 1px solid var(--gray-200);
}

.data-table th.sort-asc::after {
    content: ' ↑';
    color: var(--primary-color);
}

.data-table th.sort-desc::after {
    content: ' ↓';
    color: var(--primary-color);
}

/* Notifications */
.notification {
    position: fixed;
    top: var(--space-4);
    right: var(--space-4);
    background: var(--white);
    border-radius: var(--radius-lg);
    padding: var(--space-4);
    box-shadow: var(--shadow-xl);
    border-left: 4px solid var(--primary-color);
    max-width: 400px;
    transform: translateX(100%);
    opacity: 0;
    transition: all var(--transition-normal);
    z-index: 1000;
    display: flex;
    align-items: center;
    gap: var(--space-3);
}

.notification.show {
    transform: translateX(0);
    opacity: 1;
}

.notification-success {
    border-left-color: var(--success-color);
}

.notification-error {
    border-left-color: var(--error-color);
}

.notification-warning {
    border-left-color: var(--warning-color);
}

.notification-message {
    flex: 1;
    font-size: var(--font-size-sm);
}

.notification-close {
    background: none;
    border: none;
    font-size: var(--font-size-lg);
    cursor: pointer;
    color: var(--gray-500);
    padding: 0;
    width: 24px;
    height: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    transition: var(--transition-fast);
}

.notification-close:hover {
    background: var(--gray-100);
    color: var(--gray-700);
}

/* Focus improvements */
input:focus,
select:focus,
textarea:focus,
button:focus,
a:focus {
    outline: 2px solid var(--primary-color);
    outline-offset: 2px;
}

/* Modal styles (for future use) */
.modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-normal);
    z-index: 1000;
}

.modal.is-open {
    opacity: 1;
    visibility: visible;
}

.modal-content {
    background: var(--white);
    border-radius: var(--radius-xl);
    padding: var(--space-8);
    max-width: 90vw;
    max-height: 90vh;
    overflow-y: auto;
    box-shadow: var(--shadow-xl);
    transform: scale(0.95);
    transition: transform var(--transition-normal);
}

.modal.is-open .modal-content {
    transform: scale(1);
}

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

@media print {
    .site-header,
    .mobile-menu-toggle,
    .btn,
    .notification {
        display: none !important;
    }
    
    body {
        font-size: 12pt;
        line-height: 1.4;
    }
    
    .container {
        max-width: none;
        padding: 0;
    }
    
    .fade-in,
    .slide-up,
    .slide-in-left,
    .slide-in-right {
        opacity: 1 !important;
        transform: none !important;
    }
}

/* ==========================================================================
   Admin Interface Styles
   ========================================================================== */

.admin-wrapper {
    min-height: 100vh;
    display: grid;
    grid-template-rows: auto 1fr;
}

.admin-nav {
    background: var(--gray-900);
    color: var(--white);
    padding: var(--space-4) var(--space-6);
    display: flex;
    justify-content: space-between;
    align-items: center;
    box-shadow: var(--shadow-sm);
}

.admin-nav-brand h2 {
    margin: 0;
    color: var(--white);
    font-size: var(--font-size-xl);
}

.admin-nav-links {
    display: flex;
    list-style: none;
    margin: 0;
    padding: 0;
    gap: var(--space-6);
}

.admin-nav-links a {
    color: var(--gray-300);
    text-decoration: none;
    padding: var(--space-2) var(--space-4);
    border-radius: var(--radius-md);
    transition: var(--transition-fast);
}

.admin-nav-links a:hover,
.admin-nav-links a.active {
    color: var(--white);
    background: var(--primary-color);
}

.admin-content {
    padding: var(--space-8);
    background: var(--gray-50);
    min-height: calc(100vh - 80px);
}

.admin-header {
    margin-bottom: var(--space-8);
}

.admin-header h1 {
    margin: 0 0 var(--space-2) 0;
    color: var(--gray-900);
}

.admin-header p {
    margin: 0;
    color: var(--gray-600);
}

.leads-table-wrapper {
    background: var(--white);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-sm);
    overflow: hidden;
}

.leads-table {
    width: 100%;
    border-collapse: collapse;
    margin: 0;
}

.leads-table th {
    background: var(--gray-50);
    padding: var(--space-4);
    text-align: left;
    font-weight: 600;
    color: var(--gray-900);
    border-bottom: 1px solid var(--gray-200);
}

.leads-table td {
    padding: var(--space-4);
    border-bottom: 1px solid var(--gray-100);
    color: var(--gray-700);
}

.leads-table tbody tr:hover {
    background: var(--gray-50);
}

.status-badge {
    padding: var(--space-1) var(--space-3);
    border-radius: var(--radius-full);
    font-size: var(--font-size-sm);
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.025em;
}

.status-new {
    background: rgba(59, 130, 246, 0.1);
    color: #1e40af;
}

.status-contacted {
    background: rgba(245, 158, 11, 0.1);
    color: #92400e;
}

.status-qualified {
    background: rgba(16, 185, 129, 0.1);
    color: #047857;
}

.no-leads {
    text-align: center;
    padding: var(--space-12);
    color: var(--gray-500);
}

@media (max-width: 768px) {
    .admin-nav {
        flex-direction: column;
        gap: var(--space-4);
    }
    
    .admin-nav-links {
        gap: var(--space-4);
    }
    
    .admin-content {
        padding: var(--space-4);
    }
    
    .leads-table-wrapper {
        overflow-x: auto;
    }
}