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

:root {
    /* Colors - Modern blue palette */
    --primary: #2563eb;
    --primary-dark: #1e40af;
    --primary-light: #3b82f6;
    --secondary: #64748b;
    --accent: #f59e0b;
    --text-dark: #1e293b;
    --text-light: #64748b;
    --bg-light: #f8fafc;
    --bg-white: #ffffff;
    --border: #e2e8f0;

    /* Typography */
    --font-primary: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Oxygen', 'Ubuntu', 'Cantarell', sans-serif;
    --font-heading: 'Jost', var(--font-primary);

    /* Spacing */
    --space-xs: 0.5rem;
    --space-sm: 1rem;
    --space-md: 1.5rem;
    --space-lg: 2rem;
    --space-xl: 3rem;
    --space-2xl: 4rem;
    --space-3xl: 6rem;

    /* Layout */
    --container-width: 1200px;
    --border-radius: 0.5rem;
    --border-radius-lg: 1rem;

    /* 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);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1);
    --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.1);

    /* Transitions */
    --transition: all 0.3s ease;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-primary);
    font-size: 16px;
    line-height: 1.6;
    color: var(--text-dark);
    background: var(--bg-white);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-heading);
    line-height: 1.2;
    font-weight: 700;
}

img {
    max-width: 100%;
    height: auto;
    display: block;
}

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

button {
    font-family: inherit;
    cursor: pointer;
    border: none;
    background: none;
}

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

/* Header & Navigation */
.header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    background: var(--bg-white);
    box-shadow: var(--shadow-sm);
    z-index: 1000;
    transition: var(--transition);
}

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

.nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 80px;
}

.nav-logo {
    display: flex;
    align-items: center;
}

.logo-img {
    height: 72px;
    width: auto;
    transition: var(--transition);
}

.logo-img:hover {
    opacity: 0.8;
}

.logo-text {
    font-size: 1.5rem;
    font-weight: 700;
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.nav-list {
    display: flex;
    list-style: none;
    gap: var(--space-lg);
    align-items: center;
}

.nav-link {
    font-weight: 500;
    color: var(--text-dark);
    padding: var(--space-xs) var(--space-sm);
    border-radius: var(--border-radius);
    transition: var(--transition);
}

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

.nav-cta {
    background: var(--primary);
    color: var(--bg-white);
    padding: var(--space-xs) var(--space-md);
}

.nav-cta:hover {
    background: var(--primary-dark);
    color: var(--bg-white);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.nav-toggle {
    display: none;
    flex-direction: column;
    width: 30px;
    height: 24px;
    position: relative;
}

.hamburger,
.hamburger::before,
.hamburger::after {
    position: absolute;
    width: 100%;
    height: 3px;
    background: var(--text-dark);
    border-radius: 3px;
    transition: var(--transition);
}

.hamburger {
    top: 50%;
    transform: translateY(-50%);
}

.hamburger::before,
.hamburger::after {
    content: '';
    left: 0;
}

.hamburger::before {
    top: -8px;
}

.hamburger::after {
    bottom: -8px;
}

/* Hero Section */
.hero {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-2xl);
    align-items: center;
    min-height: 100vh;
    padding-top: 80px;
    background: linear-gradient(135deg, var(--bg-light) 0%, var(--bg-white) 100%);
}

.hero-content {
    padding: var(--space-2xl);
}

.hero-title {
    font-size: clamp(2.5rem, 5vw, 4rem);
    margin-bottom: var(--space-md);
    color: var(--text-dark);
}

.highlight {
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: clamp(1.1rem, 2vw, 1.25rem);
    color: var(--text-light);
    margin-bottom: var(--space-xl);
    max-width: 600px;
}

.hero-cta {
    display: flex;
    gap: var(--space-md);
    flex-wrap: wrap;
}

.hero-image {
    position: relative;
    height: 600px;
    display: flex;
    align-items: center;
    justify-content: center;
    padding-left: var(--space-xl);
    padding-right: var(--space-xl);
}

.hero-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-xl);
}

.hero-placeholder {
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, var(--primary-light) 0%, var(--primary) 100%);
    border-radius: var(--border-radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--bg-white);
    font-size: 1.25rem;
    box-shadow: var(--shadow-xl);
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    gap: var(--space-xs);
    padding: var(--space-md) var(--space-xl);
    font-size: 1rem;
    font-weight: 600;
    border-radius: var(--border-radius);
    transition: var(--transition);
    white-space: nowrap;
}

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

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

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

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

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

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

/* Section Styles */
section {
    padding: var(--space-3xl) 0;
}

.section-header {
    text-align: center;
    margin-bottom: var(--space-2xl);
}

.section-title {
    font-size: clamp(2rem, 4vw, 3rem);
    margin-bottom: var(--space-md);
    color: var(--text-dark);
}

.section-subtitle {
    font-size: 1.25rem;
    color: var(--text-light);
    max-width: 600px;
    margin: 0 auto;
}

/* Services Section */
.services {
    background: var(--bg-white);
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--space-xl);
}

.service-card {
    padding: var(--space-xl);
    background: var(--bg-white);
    border: 2px solid var(--border);
    border-radius: var(--border-radius-lg);
    transition: var(--transition);
    text-align: center;
}

.service-card:hover {
    border-color: var(--primary);
    transform: translateY(-8px);
    box-shadow: var(--shadow-lg);
}

.service-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, var(--primary-light) 0%, var(--primary) 100%);
    border-radius: var(--border-radius-lg);
    margin-bottom: var(--space-md);
    color: var(--bg-white);
}

.service-title {
    font-size: 1.5rem;
    margin-bottom: var(--space-sm);
    color: var(--text-dark);
}

.service-description {
    color: var(--text-light);
    line-height: 1.8;
}

/* Gallery Section */
.gallery {
    background: var(--bg-light);
}

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

.gallery-item {
    position: relative;
    overflow: hidden;
    border-radius: var(--border-radius-lg);
    aspect-ratio: 4/3;
    box-shadow: var(--shadow-md);
    transition: var(--transition);
}

.gallery-item:hover {
    transform: scale(1.05);
    box-shadow: var(--shadow-xl);
}

.gallery-item img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.gallery-placeholder {
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, var(--secondary) 0%, var(--text-light) 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--bg-white);
    font-size: 1.25rem;
}

/* Why Cascade Section */
.why-cascade {
    background: var(--bg-white);
}

.why-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-3xl);
    align-items: center;
}

.why-text .section-title {
    text-align: left;
    margin-bottom: var(--space-md);
}

.why-description {
    font-size: 1.125rem;
    color: var(--text-light);
    line-height: 1.8;
    margin-bottom: var(--space-xl);
}

.why-features {
    display: flex;
    flex-direction: column;
    gap: var(--space-lg);
}

.feature {
    display: flex;
    gap: var(--space-md);
    align-items: flex-start;
}

.feature-icon {
    flex-shrink: 0;
    width: 48px;
    height: 48px;
    padding: var(--space-xs);
    background: var(--bg-light);
    color: var(--primary);
    border-radius: var(--border-radius);
}

.feature-title {
    font-size: 1.25rem;
    margin-bottom: var(--space-xs);
    color: var(--text-dark);
}

.feature-text {
    color: var(--text-light);
}

.why-image {
    position: relative;
    height: 500px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.why-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-xl);
}

.why-placeholder {
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, var(--primary-light) 0%, var(--primary) 100%);
    border-radius: var(--border-radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--bg-white);
    font-size: 1.25rem;
    box-shadow: var(--shadow-xl);
}

/* Reviews Section */
.reviews {
    background: var(--bg-light);
}

.rating {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-sm);
    margin-top: var(--space-sm);
}

.stars {
    color: var(--accent);
    font-size: 1.5rem;
}

.rating-text {
    color: var(--text-light);
    font-size: 1.125rem;
}

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

.review-card {
    padding: var(--space-xl);
    background: var(--bg-white);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-md);
    transition: var(--transition);
}

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

.review-stars {
    color: var(--accent);
    font-size: 1.25rem;
    margin-bottom: var(--space-md);
}

.review-text {
    color: var(--text-dark);
    line-height: 1.8;
    margin-bottom: var(--space-md);
    font-style: italic;
}

.review-author {
    color: var(--text-light);
    font-weight: 600;
}

/* Contact Section */
.contact {
    background: var(--bg-white);
}

.contact-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-3xl);
    align-items: start;
}

.contact-info .section-title {
    text-align: left;
    margin-bottom: var(--space-md);
}

.contact-description {
    font-size: 1.125rem;
    color: var(--text-light);
    line-height: 1.8;
    margin-bottom: var(--space-xl);
}

.contact-methods {
    display: flex;
    flex-direction: column;
    gap: var(--space-lg);
}

.contact-method {
    display: flex;
    gap: var(--space-md);
    align-items: center;
    padding: var(--space-md);
    background: var(--bg-light);
    border-radius: var(--border-radius);
    transition: var(--transition);
}

.contact-method:hover {
    background: var(--primary);
    color: var(--bg-white);
}

.contact-method svg {
    flex-shrink: 0;
    width: 24px;
    height: 24px;
}

.method-label {
    font-size: 0.875rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    opacity: 0.8;
}

.method-value {
    font-size: 1.125rem;
    font-weight: 600;
}

/* Contact Form */
.contact-form {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-lg);
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: var(--space-xs);
}

.form-group-full {
    grid-column: 1 / -1;
}

.form-label {
    font-weight: 600;
    color: var(--text-dark);
}

.form-input {
    padding: var(--space-md);
    font-size: 1rem;
    font-family: inherit;
    border: 2px solid var(--border);
    border-radius: var(--border-radius);
    transition: var(--transition);
    background: var(--bg-white);
}

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

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

.required {
    color: var(--primary);
    font-size: 0.8em;
    font-weight: bold;
    vertical-align: middle;
    line-height: 1;
}

/* Footer */
.footer {
    background: var(--text-dark);
    color: var(--bg-white);
    padding: var(--space-3xl) 0 var(--space-lg);
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--space-xl);
    margin-bottom: var(--space-xl);
}

.footer-logo {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: var(--space-sm);
}

.footer-tagline {
    color: var(--text-light);
}

.footer-title {
    font-size: 1.125rem;
    margin-bottom: var(--space-md);
}

.footer-list {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
}

.footer-list a {
    color: var(--text-light);
    transition: var(--transition);
}

.footer-list a:hover {
    color: var(--primary-light);
    padding-left: var(--space-xs);
}

.footer-contact p {
    color: var(--text-light);
    margin-bottom: var(--space-xs);
}

.social-links {
    display: flex;
    gap: var(--space-md);
}

.social-link {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: var(--border-radius);
    color: var(--bg-white);
    transition: var(--transition);
}

.social-link:hover {
    background: var(--primary);
    transform: translateY(-4px);
}

.footer-bottom {
    padding-top: var(--space-lg);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    text-align: center;
    color: var(--text-light);
}

/* Responsive Design */
@media (max-width: 968px) {
    .nav-menu {
        position: fixed;
        top: 80px;
        left: 0;
        width: 100%;
        background: var(--bg-white);
        box-shadow: var(--shadow-lg);
        padding: var(--space-lg);
        transform: translateY(-150%);
        transition: var(--transition);
    }

    .nav-menu.active {
        transform: translateY(0);
    }

    .nav-list {
        flex-direction: column;
        gap: var(--space-md);
        align-items: stretch;
    }

    .nav-link,
    .nav-cta {
        display: block;
        text-align: center;
        padding: var(--space-md);
    }

    .nav-toggle {
        display: flex;
    }

    .nav-toggle.active .hamburger {
        background: transparent;
    }

    .nav-toggle.active .hamburger::before {
        transform: rotate(45deg);
        top: 0;
    }

    .nav-toggle.active .hamburger::after {
        transform: rotate(-45deg);
        bottom: 0;
    }

    .hero {
        grid-template-columns: 1fr;
        min-height: auto;
        padding: var(--space-3xl) 0;
    }

    .hero-image {
        order: -1;
        height: 400px;
        padding: 0 var(--space-lg);
    }

    .why-content {
        grid-template-columns: 1fr;
    }

    .why-image {
        order: -1;
    }

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

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

@media (max-width: 640px) {
    .container {
        padding: 0 var(--space-md);
    }

    .hero-cta {
        flex-direction: column;
        align-items: stretch;
    }

    .btn {
        justify-content: center;
    }

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

    .hero-image,
    .why-image {
        height: 300px;
        padding: 0 var(--space-md);
    }
}

/* Performance optimizations */
@media (prefers-reduced-motion: reduce) {
    * {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

/* Print styles */
@media print {
    .header,
    .nav-toggle,
    .hero-cta,
    .btn,
    .contact-form {
        display: none;
    }
}

/* Notification styles */
.notification {
    position: fixed;
    top: 100px;
    right: 20px;
    padding: var(--space-md) var(--space-lg);
    background: var(--bg-white);
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-xl);
    max-width: 400px;
    z-index: 9999;
    opacity: 0;
    transform: translateX(400px);
    transition: all 0.3s ease;
    border-left: 4px solid var(--primary);
}

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

.notification-success {
    border-left-color: #10b981;
    background: #f0fdf4;
    color: #065f46;
}

.notification-error {
    border-left-color: #ef4444;
    background: #fef2f2;
    color: #991b1b;
}

@media (max-width: 640px) {
    .notification {
        right: 10px;
        left: 10px;
        max-width: calc(100% - 20px);
        transform: translateY(-150px);
    }

    .notification.show {
        transform: translateY(0);
    }
}