* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --primary-blue: #1e3a8a;
    --light-blue: #3b82f6;
    --dark-blue: #1e40af;
    --white: #ffffff;
    --light-gray: #f3f4f6;
    --dark-gray: #374151;
    --text-gray: #6b7280;
}

/* Light theme (default) */
[data-theme="light"] {
    --bg-primary: #ffffff;
    --bg-secondary: #f3f4f6;
    --text-primary: #374151;
    --text-secondary: #6b7280;
    --card-bg: #ffffff;
    --shadow: rgba(0, 0, 0, 0.1);
}

/* Dark theme */
[data-theme="dark"] {
    --bg-primary: #1a1a1a;
    --bg-secondary: #2d2d2d;
    --text-primary: #e5e5e5;
    --text-secondary: #b0b0b0;
    --card-bg: #2d2d2d;
    --shadow: rgba(0, 0, 0, 0.5);
    --primary-blue: #4a90e2;
    --light-blue: #6ba3f5;
    --dark-blue: #3b7bc8;
    --white: #1a1a1a;
    --light-gray: #2d2d2d;
    --dark-gray: #e5e5e5;
    --text-gray: #b0b0b0;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    line-height: 1.6;
    color: var(--text-primary);
    background-color: var(--bg-primary);
    transition: background-color 0.3s ease, color 0.3s ease;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Header */
header {
    background: linear-gradient(135deg, var(--primary-blue) 0%, var(--dark-blue) 100%);
    color: var(--white);
    padding: 1.5rem 0;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    transition: background 0.3s ease;
}

[data-theme="dark"] header {
    background: linear-gradient(135deg, #2d4a7c 0%, #1e3a5f 100%);
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.5);
}

header .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 1rem;
}

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

.theme-toggle {
    background: rgba(255, 255, 255, 0.2);
    border: none;
    border-radius: 50%;
    width: 40px;
    height: 40px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    transition: background 0.3s, transform 0.2s;
    backdrop-filter: blur(10px);
}

.theme-toggle:hover {
    background: rgba(255, 255, 255, 0.3);
    transform: scale(1.1);
}

.language-switcher {
    display: flex;
    gap: 0.5rem;
    background: rgba(255, 255, 255, 0.2);
    padding: 0.25rem;
    border-radius: 8px;
    backdrop-filter: blur(10px);
}

.lang-btn {
    background: transparent;
    border: none;
    color: var(--white);
    padding: 0.5rem 1rem;
    border-radius: 6px;
    cursor: pointer;
    font-weight: 600;
    transition: background 0.3s;
    font-size: 0.9rem;
}

.lang-btn:hover {
    background: rgba(255, 255, 255, 0.2);
}

.lang-btn.active {
    background: rgba(255, 255, 255, 0.3);
}

.logo h1 {
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: 0.25rem;
}

.tagline {
    font-size: 0.9rem;
    opacity: 0.9;
}

.contact-header .phone {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--white);
    text-decoration: none;
    transition: opacity 0.3s;
}

.contact-header .phone:hover {
    opacity: 0.8;
}

/* Hero Section */
.hero {
    background: linear-gradient(135deg, var(--light-blue) 0%, var(--primary-blue) 100%);
    color: var(--white);
    padding: 4rem 0;
    text-align: center;
    transition: background 0.3s ease;
}

[data-theme="dark"] .hero {
    background: linear-gradient(135deg, #3d5a8c 0%, #2d4a7c 100%);
}

.hero-content h2 {
    font-size: 2.5rem;
    margin-bottom: 0.5rem;
    font-weight: 700;
}

.subtitle {
    font-size: 1.25rem;
    margin-bottom: 1rem;
    opacity: 0.95;
}

.hero-description {
    font-size: 1.1rem;
    max-width: 800px;
    margin: 0 auto 2rem;
    opacity: 0.95;
    line-height: 1.8;
}

.license-info {
    display: flex;
    gap: 2rem;
    justify-content: center;
    flex-wrap: wrap;
    margin-top: 1.5rem;
}

.license-info span {
    background: rgba(255, 255, 255, 0.2);
    padding: 0.5rem 1.5rem;
    border-radius: 25px;
    font-weight: 600;
    backdrop-filter: blur(10px);
}

/* About Section */
.about {
    padding: 4rem 0;
    background-color: var(--bg-primary);
    transition: background-color 0.3s ease;
}

.about h2 {
    text-align: center;
    font-size: 2.25rem;
    margin-bottom: 2rem;
    color: var(--primary-blue);
}

.about-content {
    max-width: 900px;
    margin: 0 auto;
    text-align: center;
}

.about-content p {
    font-size: 1.1rem;
    line-height: 1.8;
    color: var(--text-secondary);
    margin-bottom: 1.5rem;
    transition: color 0.3s ease;
}

.about-content p:last-child {
    margin-bottom: 0;
}

/* Services Section */
.services {
    padding: 4rem 0;
    background-color: var(--bg-secondary);
    transition: background-color 0.3s ease;
}

.services h2 {
    text-align: center;
    font-size: 2.25rem;
    margin-bottom: 3rem;
    color: var(--primary-blue);
}

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

.service-item {
    background: var(--card-bg);
    padding: 2rem;
    border-radius: 10px;
    text-align: center;
    box-shadow: 0 4px 6px var(--shadow);
    transition: transform 0.3s, box-shadow 0.3s, background-color 0.3s ease;
}

.service-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 15px var(--shadow);
}

[data-theme="dark"] .service-item:hover {
    box-shadow: 0 8px 15px rgba(0, 0, 0, 0.7);
}

.service-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
}

.service-item h3 {
    color: var(--primary-blue);
    margin-bottom: 0.5rem;
    font-size: 1.1rem;
}

.service-item p {
    color: var(--text-secondary);
    font-size: 0.95rem;
    transition: color 0.3s ease;
}

.free-estimate {
    text-align: center;
    margin-top: 2rem;
}

.highlight {
    display: inline-block;
    background: var(--primary-blue);
    color: var(--white);
    padding: 1rem 2rem;
    border-radius: 25px;
    font-size: 1.1rem;
    font-weight: 600;
}

/* Contact Section */
.contact {
    padding: 4rem 0;
    background-color: var(--bg-primary);
    transition: background-color 0.3s ease;
}

.contact h2 {
    text-align: center;
    font-size: 2.25rem;
    margin-bottom: 3rem;
    color: var(--primary-blue);
}

.contact-info {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin-bottom: 2rem;
}

.contact-item {
    text-align: center;
    padding: 1.5rem;
    background: var(--bg-secondary);
    border-radius: 10px;
    transition: background-color 0.3s ease;
}

.contact-item h3 {
    color: var(--primary-blue);
    margin-bottom: 0.75rem;
    font-size: 1.1rem;
}

.contact-item a {
    color: var(--dark-blue);
    text-decoration: none;
    font-weight: 600;
    transition: color 0.3s;
}

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

.contact-item p {
    color: var(--text-primary);
    line-height: 1.8;
    transition: color 0.3s ease;
}

/* Footer */
footer {
    background-color: var(--dark-gray);
    color: var(--white);
    padding: 2rem 0;
    text-align: center;
    transition: background-color 0.3s ease;
}

[data-theme="dark"] footer {
    background-color: #0f0f0f;
}

footer p {
    margin: 0.5rem 0;
    opacity: 0.9;
}

/* Responsive Design */
@media (max-width: 768px) {
    header .container {
        flex-direction: column;
        text-align: center;
        gap: 1rem;
    }

    .header-controls {
        flex-direction: column;
        width: 100%;
        align-items: center;
    }

    .hero-content h2 {
        font-size: 2rem;
    }

    .services-grid {
        grid-template-columns: 1fr;
    }

    .contact-info {
        grid-template-columns: 1fr;
    }

    .license-info {
        flex-direction: column;
        gap: 1rem;
    }

    .hero-description {
        font-size: 1rem;
        padding: 0 1rem;
    }

    .about-content p {
        font-size: 1rem;
    }
}