/* ===== PROFESSIONAL BUSINESS CSS ===== */

/* CSS Variables for Consistent Design */
:root {
    /* Professional Color Palette - Light Mode */
    --primary-blue: #1e40af;
    --secondary-blue: #3b82f6;
    --dark-blue: #1e3a8a;
    --light-blue: #dbeafe;
    --accent-blue: #06b6d4;
    
    /* Neutral Colors - Light Mode */
    --gray-900: #111827;
    --gray-800: #1f2937;
    --gray-700: #374151;
    --gray-600: #4b5563;
    --gray-500: #6b7280;
    --gray-400: #9ca3af;
    --gray-300: #d1d5db;
    --gray-200: #e5e7eb;
    --gray-100: #f3f4f6;
    --gray-50: #f9fafb;
    --white: #ffffff;
    
    /* Background Colors */
    --bg-primary: #ffffff;
    --bg-secondary: #f9fafb;
    --bg-tertiary: #f3f4f6;
    --text-primary: #111827;
    --text-secondary: #374151;
    --text-muted: #6b7280;
    
    /* Typography */
    --font-heading: 'Montserrat', sans-serif;
    --font-body: 'Inter', sans-serif;
    
    /* Spacing */
    --section-padding: 6rem 0;
    --container-padding: 0 2rem;
    
    /* 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);
    
    /* Transitions */
    --transition: all 0.3s ease;
}

/* Dark Theme Variables */
[data-theme="dark"] {
    /* Professional Color Palette - Dark Mode */
    --primary-blue: #3b82f6;
    --secondary-blue: #60a5fa;
    --dark-blue: #1d4ed8;
    --light-blue: #1e3a8a;
    --accent-blue: #22d3ee;
    
    /* Neutral Colors - Dark Mode */
    --gray-900: #f9fafb;
    --gray-800: #f3f4f6;
    --gray-700: #e5e7eb;
    --gray-600: #d1d5db;
    --gray-500: #9ca3af;
    --gray-400: #6b7280;
    --gray-300: #4b5563;
    --gray-200: #374151;
    --gray-100: #1f2937;
    --gray-50: #111827;
    --white: #1f2937;
    
    /* Background Colors - Dark Mode */
    --bg-primary: #111827;
    --bg-secondary: #1f2937;
    --bg-tertiary: #374151;
    --text-primary: #f9fafb;
    --text-secondary: #e5e7eb;
    --text-muted: #9ca3af;
    
    /* Dark Mode Shadows */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.3), 0 2px 4px -1px rgba(0, 0, 0, 0.2);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.3), 0 4px 6px -2px rgba(0, 0, 0, 0.2);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.4), 0 10px 10px -5px rgba(0, 0, 0, 0.3);
}

/* ===== RESET & BASE ===== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

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

body {
    font-family: var(--font-body);
    line-height: 1.6;
    color: var(--text-secondary);
    background-color: var(--bg-primary);
    transition: var(--transition);
}

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

/* ===== NAVIGATION ===== */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--gray-200);
    padding: 1rem 0;
    z-index: 1000;
    transition: var(--transition);
}

[data-theme="dark"] .navbar {
    background: rgba(31, 41, 55, 0.95);
    border-bottom-color: var(--gray-200);
}

.navbar.scrolled {
    background: rgba(255, 255, 255, 0.98);
    box-shadow: var(--shadow-md);
    padding: 0.75rem 0;
}

[data-theme="dark"] .navbar.scrolled {
    background: rgba(31, 41, 55, 0.98);
}

.navbar .container {
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.nav-brand {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.logo {
    height: 40px;
    width: auto;
}

.brand-text {
    font-family: var(--font-heading);
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-primary);
    letter-spacing: 1px;
}

.nav-controls {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 2rem;
    margin: 0;
}

.nav-link {
    color: var(--text-secondary);
    text-decoration: none;
    font-weight: 500;
    font-size: 0.95rem;
    padding: 0.5rem 0;
    position: relative;
    transition: var(--transition);
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--primary-blue);
    transition: var(--transition);
}

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

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

/* ===== THEME TOGGLE ===== */
.theme-toggle {
    background: linear-gradient(145deg, var(--bg-tertiary), var(--bg-secondary));
    border: 2px solid var(--gray-200);
    border-radius: 12px;
    padding: 0.75rem;
    cursor: pointer;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    display: flex;
    align-items: center;
    justify-content: center;
    width: 48px;
    height: 48px;
    position: relative;
    overflow: hidden;
    box-shadow: var(--shadow-sm);
}

.theme-toggle::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(145deg, var(--primary-blue), var(--secondary-blue));
    opacity: 0;
    transition: all 0.3s ease;
    border-radius: 10px;
}

.theme-toggle:hover {
    border-color: var(--primary-blue);
    transform: translateY(-2px) scale(1.05);
    box-shadow: var(--shadow-lg);
}

.theme-toggle:hover::before {
    opacity: 1;
}

.theme-toggle:active {
    transform: translateY(0) scale(0.98);
}

.theme-toggle i {
    font-size: 1.125rem;
    color: var(--text-secondary);
    transition: all 0.3s ease;
    position: relative;
    z-index: 2;
    transform: scale(1);
}

.theme-toggle:hover i {
    color: var(--white);
    transform: scale(1.1) rotate(15deg);
}

/* Dark mode specific styling */
[data-theme="dark"] .theme-toggle {
    background: linear-gradient(145deg, var(--gray-100), var(--gray-200));
    border-color: var(--gray-300);
}

[data-theme="dark"] .theme-toggle::before {
    background: linear-gradient(145deg, var(--accent-blue), var(--primary-blue));
}

[data-theme="dark"] .theme-toggle:hover {
    border-color: var(--accent-blue);
}

/* Animation for theme switching */
.theme-toggle.switching {
    animation: themeSwitch 0.6s ease;
}

@keyframes themeSwitch {
    0% { transform: scale(1) rotate(0deg); }
    50% { transform: scale(1.1) rotate(180deg); }
    100% { transform: scale(1) rotate(360deg); }
}

/* Focus styles for accessibility */
.theme-toggle:focus {
    outline: none;
    border-color: var(--primary-blue);
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.3);
}

.theme-toggle:focus-visible {
    outline: 2px solid var(--primary-blue);
    outline-offset: 2px;
}

.hamburger {
    display: none;
    flex-direction: column;
    cursor: pointer;
    gap: 4px;
}

.hamburger span {
    width: 25px;
    height: 3px;
    background: var(--text-secondary);
    border-radius: 2px;
    transition: var(--transition);
}

/* ===== HERO SECTION ===== */
.hero {
    padding: 8rem 0 6rem;
    background: linear-gradient(135deg, var(--bg-secondary) 0%, var(--bg-primary) 100%);
    margin-top: 70px;
}

.hero-content {
    text-align: center;
    max-width: 800px;
    margin: 0 auto;
}

.hero-title {
    font-family: var(--font-heading);
    font-size: clamp(2.5rem, 5vw, 3.5rem);
    font-weight: 700;
    color: var(--text-primary);
    line-height: 1.2;
    margin-bottom: 1.5rem;
}

.hero-title .highlight {
    color: var(--primary-blue);
}

.hero-subtitle {
    font-size: 1.25rem;
    color: var(--text-muted);
    margin-bottom: 2.5rem;
    line-height: 1.6;
}

.hero-buttons {
    display: flex;
    gap: 1rem;
    justify-content: center;
    margin-bottom: 3rem;
    flex-wrap: wrap;
}

.trust-indicators {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
    padding-top: 2rem;
    border-top: 1px solid var(--gray-200);
}

.trust-item {
    text-align: center;
}

.trust-number {
    display: block;
    font-family: var(--font-heading);
    font-size: 2rem;
    font-weight: 700;
    color: var(--primary-blue);
    margin-bottom: 0.5rem;
}

.trust-label {
    font-size: 0.95rem;
    color: var(--text-muted);
    font-weight: 500;
}

/* ===== BUTTONS ===== */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 1rem 2rem;
    text-decoration: none;
    border-radius: 0.5rem;
    font-weight: 600;
    font-size: 1rem;
    border: none;
    cursor: pointer;
    transition: var(--transition);
    font-family: var(--font-body);
}

.btn-primary {
    background: var(--primary-blue);
    color: var(--white);
    box-shadow: var(--shadow-md);
}

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

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

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

.btn-full {
    width: 100%;
    justify-content: center;
}

/* ===== SECTION STYLES ===== */
.section-header {
    text-align: center;
    margin-bottom: 4rem;
}

.section-title {
    font-family: var(--font-heading);
    font-size: clamp(2rem, 4vw, 2.75rem);
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 1rem;
}

.section-subtitle {
    font-size: 1.125rem;
    color: var(--text-muted);
    max-width: 700px;
    margin: 0 auto;
    line-height: 1.7;
}

/* ===== SERVICES SECTION ===== */
.services {
    padding: var(--section-padding);
    background: var(--bg-primary);
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 2rem;
}

.service-card {
    background: var(--bg-primary);
    padding: 2.5rem;
    border-radius: 1rem;
    border: 1px solid var(--gray-200);
    transition: var(--transition);
    position: relative;
}

.service-card:hover {
    border-color: var(--primary-blue);
    box-shadow: var(--shadow-lg);
    transform: translateY(-5px);
}

.service-card.animate-in {
    opacity: 1;
    transform: translateY(0);
}

.service-icon {
    width: 60px;
    height: 60px;
    background: var(--light-blue);
    border-radius: 1rem;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 1.5rem;
}

.service-icon i {
    font-size: 1.5rem;
    color: var(--primary-blue);
}

.service-card h3 {
    font-family: var(--font-heading);
    font-size: 1.375rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 1rem;
}

.service-card p {
    color: var(--text-muted);
    margin-bottom: 1.5rem;
    line-height: 1.6;
}

.service-features {
    list-style: none;
}

.service-features li {
    color: var(--text-secondary);
    padding: 0.5rem 0;
    padding-left: 1.5rem;
    position: relative;
    border-bottom: 1px solid var(--gray-100);
}

.service-features li:last-child {
    border-bottom: none;
}

.service-features li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: var(--primary-blue);
    font-weight: 600;
}

/* ===== ABOUT SECTION ===== */
.about {
    padding: var(--section-padding);
    background: var(--bg-secondary);
}

.about-content {
    display: grid;
    gap: 4rem;
}

.about-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
    margin-bottom: 3rem;
}

.about-feature {
    text-align: center;
    padding: 2rem;
    background: var(--bg-primary);
    border-radius: 1rem;
    border: 1px solid var(--gray-200);
    transition: var(--transition);
}

.about-feature:hover {
    box-shadow: var(--shadow-md);
    transform: translateY(-3px);
}

.about-feature.animate-in {
    opacity: 1;
    transform: translateY(0);
}

.feature-icon {
    width: 50px;
    height: 50px;
    background: var(--light-blue);
    border-radius: 0.75rem;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1rem;
}

.feature-icon i {
    font-size: 1.25rem;
    color: var(--primary-blue);
}

.about-feature h3 {
    font-family: var(--font-heading);
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 1rem;
}

.about-feature p {
    color: var(--text-muted);
    line-height: 1.6;
}

.about-stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1.5rem;
}

.stat-card {
    background: var(--bg-primary);
    padding: 2rem;
    border-radius: 1rem;
    text-align: center;
    border: 1px solid var(--gray-200);
    transition: var(--transition);
}

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

.stat-card.animate-in {
    opacity: 1;
    transform: translateY(0);
}

.stat-number {
    font-family: var(--font-heading);
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--primary-blue);
    display: block;
    margin-bottom: 0.5rem;
}

.stat-label {
    color: var(--text-muted);
    font-weight: 500;
    font-size: 0.95rem;
}

/* ===== CONTACT SECTION ===== */
.contact {
    padding: var(--section-padding);
    background: var(--bg-primary);
}

.contact-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: start;
}

.contact-item {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 2rem;
    padding: 1.5rem;
    background: var(--bg-secondary);
    border-radius: 1rem;
    transition: var(--transition);
}

.contact-item:hover {
    background: var(--light-blue);
}

.contact-item.animate-in {
    opacity: 1;
    transform: translateY(0);
}

.contact-icon {
    width: 50px;
    height: 50px;
    background: var(--primary-blue);
    border-radius: 0.75rem;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.contact-icon i {
    font-size: 1.25rem;
    color: var(--white);
}

.contact-details h4 {
    font-family: var(--font-heading);
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 0.25rem;
}

.contact-details a,
.contact-details span {
    color: var(--text-muted);
    text-decoration: none;
    transition: var(--transition);
}

.contact-details a:hover {
    color: var(--primary-blue);
}

/* ===== FORM STYLES ===== */
.contact-form {
    background: var(--bg-secondary);
    padding: 2.5rem;
    border-radius: 1rem;
    border: 1px solid var(--gray-200);
}

.form-group {
    margin-bottom: 1.5rem;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 1rem;
    border: 2px solid var(--gray-300);
    border-radius: 0.5rem;
    font-family: var(--font-body);
    font-size: 1rem;
    transition: var(--transition);
    background: var(--bg-primary);
    color: var(--text-secondary);
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary-blue);
    box-shadow: 0 0 0 3px rgba(30, 64, 175, 0.1);
}

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

.form-message {
    padding: 1rem;
    border-radius: 0.5rem;
    margin-bottom: 1.5rem;
    font-weight: 500;
    text-align: center;
    animation: slideIn 0.3s ease;
}

.form-message-success {
    background: #d1fae5;
    color: #065f46;
    border: 1px solid #10b981;
}

.form-message-error {
    background: #fee2e2;
    color: #991b1b;
    border: 1px solid #ef4444;
}

.form-message-loading {
    background: #dbeafe;
    color: #1e40af;
    border: 1px solid #3b82f6;
}

[data-theme="dark"] .form-message-success {
    background: #064e3b;
    color: #6ee7b7;
    border-color: #059669;
}

[data-theme="dark"] .form-message-error {
    background: #7f1d1d;
    color: #fca5a5;
    border-color: #dc2626;
}

[data-theme="dark"] .form-message-loading {
    background: #1e3a8a;
    color: #93c5fd;
    border-color: #2563eb;
}

@keyframes slideIn {
    from {
        opacity: 0;
        transform: translateY(-10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* ===== FOOTER ===== */
.footer {
    background: var(--gray-900);
    color: var(--white);
    padding: 3rem 0 2rem;
}

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 2rem;
    flex-wrap: wrap;
    gap: 2rem;
}

.footer-brand {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.footer-logo {
    height: 35px;
    width: auto;
}

.footer-brand-text {
    font-family: var(--font-heading);
    font-size: 1.25rem;
    font-weight: 700;
    letter-spacing: 1px;
}

.footer-links {
    display: flex;
    gap: 2rem;
}

.footer-links a {
    color: var(--gray-400);
    text-decoration: none;
    transition: var(--transition);
}

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

.footer-social {
    display: flex;
    gap: 1rem;
}

.social-link {
    width: 40px;
    height: 40px;
    background: var(--gray-800);
    border-radius: 0.5rem;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--gray-400);
    text-decoration: none;
    transition: var(--transition);
}

.social-link:hover {
    background: var(--primary-blue);
    color: var(--white);
}

.footer-bottom {
    text-align: center;
    padding-top: 2rem;
    border-top: 1px solid var(--gray-800);
    color: var(--gray-500);
}

/* ===== BACK TO TOP BUTTON ===== */
.back-to-top {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    width: 50px;
    height: 50px;
    background: var(--primary-blue);
    color: var(--white);
    border: none;
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
    z-index: 1000;
    box-shadow: var(--shadow-lg);
}

.back-to-top.visible {
    opacity: 1;
    visibility: visible;
}

.back-to-top:hover {
    background: var(--dark-blue);
    transform: translateY(-3px);
}

/* ===== RESPONSIVE DESIGN ===== */
@media (max-width: 1024px) {
    .contact-content {
        grid-template-columns: 1fr;
        gap: 3rem;
    }
}

@media (max-width: 768px) {
    :root {
        --section-padding: 4rem 0;
        --container-padding: 0 1rem;
    }
    
    .nav-controls {
        flex-direction: row;
        gap: 1rem;
    }
    
    .nav-menu {
        position: fixed;
        top: 100%;
        left: 0;
        width: 100%;
        background: var(--bg-primary);
        flex-direction: column;
        padding: 2rem;
        box-shadow: var(--shadow-lg);
        transform: translateX(-100%);
        transition: var(--transition);
    }
    
    .nav-menu.active {
        transform: translateX(0);
    }
    
    .hamburger {
        display: flex;
    }
    
    .hamburger.active span:nth-child(1) {
        transform: rotate(45deg) translate(5px, 5px);
    }
    
    .hamburger.active span:nth-child(2) {
        opacity: 0;
    }
    
    .hamburger.active span:nth-child(3) {
        transform: rotate(-45deg) translate(7px, -6px);
    }
    
    .hero {
        padding: 6rem 0 4rem;
    }
    
    .hero-buttons {
        flex-direction: column;
        align-items: center;
    }
    
    .trust-indicators {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }
    
    .services-grid {
        grid-template-columns: 1fr;
    }
    
    .about-grid {
        grid-template-columns: 1fr;
    }
    
    .about-stats {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .footer-content {
        flex-direction: column;
        text-align: center;
    }
}

@media (max-width: 480px) {
    .trust-indicators {
        grid-template-columns: 1fr;
    }
    
    .about-stats {
        grid-template-columns: 1fr;
    }
    
    .contact-form {
        padding: 2rem;
    }
}

/* ===== THEME TOGGLE ===== */
.theme-toggle {
    position: fixed;
    top: 1rem;
    right: 1rem;
    width: 40px;
    height: 40px;
    background: var(--primary-blue);
    color: var(--white);
    border: none;
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
    box-shadow: var(--shadow-lg);
    transition: var(--transition);
}

.theme-toggle:hover {
    background: var(--dark-blue);
}

.theme-icon {
    width: 20px;
    height: 20px;
}

[data-theme="dark"] .theme-toggle {
    background: var(--gray-800);
    color: var(--white);
}

[data-theme="dark"] .theme-toggle:hover {
    background: var(--gray-700);
}