/* ===================================
   CSS Variables & Design Tokens
   =================================== */
:root {
    /* Colors - Premium Palette */
    --color-primary: hsl(220, 13%, 18%);
    --color-primary-light: hsl(220, 13%, 25%);
    --color-secondary: hsl(0, 0%, 95%);
    --color-accent: hsl(352, 83%, 48%);
    --color-accent-hover: hsl(352, 83%, 42%);

    --color-background: hsl(0, 0%, 100%);
    --color-foreground: hsl(220, 13%, 18%);
    --color-muted: hsl(220, 9%, 46%);
    --color-border: hsl(220, 13%, 91%);

    --color-card-bg: hsl(0, 0%, 100%);
    --color-overlay: rgba(0, 0, 0, 0.5);

    /* Typography */
    --font-headline: 'Poppins', sans-serif;
    --font-body: 'PT Sans', sans-serif;

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

    /* 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);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1);
    --shadow-2xl: 0 25px 50px -12px rgba(0, 0, 0, 0.25);

    /* Transitions */
    --transition-fast: 150ms ease-in-out;
    --transition-base: 300ms ease-in-out;
    --transition-slow: 500ms ease-in-out;

    /* Border Radius */
    --radius-sm: 0.375rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;
    --radius-full: 9999px;
}

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

html {
    scroll-behavior: smooth;
    scroll-padding-top: 5rem;
}

body {
    font-family: var(--font-body);
    color: var(--color-foreground);
    background-color: var(--color-background);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

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

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

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

/* ===================================
   Utility Classes
   =================================== */
.container {
    width: 100%;
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

/* ===================================
   Header
   =================================== */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 100;
    background-color: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    box-shadow: var(--shadow-md);
    transition: all var(--transition-base);
}

.header-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 5rem;
}

.logo-img {
    height: 1.5rem;
    width: auto;
    transition: transform var(--transition-fast);
}

.logo:hover .logo-img {
    transform: scale(1.05);
}

.nav-desktop {
    display: none;
    gap: var(--spacing-md);
}

.nav-link {
    font-family: var(--font-headline);
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--color-foreground);
    transition: color var(--transition-fast);
    position: relative;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -0.5rem;
    left: 0;
    width: 0;
    height: 2px;
    background-color: var(--color-accent);
    transition: width var(--transition-base);
}

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

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

.menu-toggle {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 2.5rem;
    height: 2.5rem;
    color: var(--color-foreground);
    transition: color var(--transition-fast);
}

.menu-toggle:hover {
    color: var(--color-accent);
}

@media (min-width: 768px) {
    .nav-desktop {
        display: flex;
    }

    .menu-toggle {
        display: none;
    }
}

/* ===================================
   Mobile Menu
   =================================== */
.mobile-menu {
    position: fixed;
    top: 0;
    right: -100%;
    width: 100%;
    max-width: 320px;
    height: 100vh;
    background-color: var(--color-primary);
    z-index: 200;
    transition: right var(--transition-base);
    box-shadow: var(--shadow-2xl);
}

.mobile-menu.active {
    right: 0;
}

.mobile-menu-content {
    padding: var(--spacing-lg);
    display: flex;
    flex-direction: column;
    height: 100%;
}

.menu-close {
    align-self: flex-end;
    width: 2.5rem;
    height: 2.5rem;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    transition: color var(--transition-fast);
}

.menu-close:hover {
    color: var(--color-accent);
}

.mobile-nav {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
    margin-top: var(--spacing-xl);
}

.mobile-nav-link {
    font-family: var(--font-headline);
    font-size: 1.25rem;
    font-weight: 600;
    color: white;
    padding: var(--spacing-sm);
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
}

.mobile-nav-link:hover {
    color: var(--color-accent);
    background-color: rgba(255, 255, 255, 0.1);
    transform: translateX(0.5rem);
}

/* ===================================
   Main Content
   =================================== */
.main-content {
    padding-top: 5rem;
}

/* ===================================
   Hero Slider
   =================================== */
.hero-slider {
    position: relative;
    width: 100%;
    height: 100vh;
    overflow: hidden;
}

.slider-container {
    position: relative;
    width: 100%;
    height: 100%;
}

.slider-track {
    display: flex;
    width: 100%;
    height: 100%;
}

.slide {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    opacity: 0;
    transition: opacity var(--transition-slow);
}

.slide.active {
    opacity: 1;
    z-index: 1;
}

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

.slide-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(to top,
            rgba(0, 0, 0, 0.7) 0%,
            rgba(0, 0, 0, 0.3) 50%,
            transparent 100%);
}

.slide-content {
    position: absolute;
    inset: 0;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: flex-end;
    padding-bottom: var(--spacing-3xl);
    color: white;
    text-align: center;
    z-index: 2;
}

.slide-logo {
    max-width: min(80%, 700px);
    height: auto;
    margin-bottom: var(--spacing-sm);
    animation: fadeInUp 0.8s ease-out;
}

.slide-tagline {
    font-family: var(--font-headline);
    font-size: clamp(1.25rem, 3vw, 1.5rem);
    font-weight: 300;
    margin-bottom: var(--spacing-lg);
    animation: fadeInUp 0.8s ease-out 0.2s both;
}

.slider-btn {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    width: 2.5rem;
    height: 2.5rem;
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: rgba(0, 0, 0, 0.3);
    color: white;
    border-radius: var(--radius-full);
    transition: all var(--transition-fast);
    z-index: 10;
}

.slider-btn:hover {
    background-color: rgba(0, 0, 0, 0.5);
    transform: translateY(-50%) scale(1.1);
}

.slider-btn-prev {
    left: var(--spacing-md);
}

.slider-btn-next {
    right: var(--spacing-md);
}

.slider-dots {
    position: absolute;
    bottom: var(--spacing-lg);
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    gap: var(--spacing-sm);
    z-index: 10;
}

.slider-dot {
    width: 0.75rem;
    height: 0.75rem;
    border-radius: var(--radius-full);
    background-color: rgba(255, 255, 255, 0.5);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.slider-dot.active {
    background-color: white;
    width: 2rem;
}

/* ===================================
   Sections
   =================================== */
.section {
    padding: var(--spacing-3xl) 0;
}

.section-light {
    background-color: hsl(220, 13%, 96%);
}

.section-title {
    font-family: var(--font-headline);
    font-size: clamp(2rem, 5vw, 2.5rem);
    font-weight: 700;
    color: var(--color-primary);
    text-align: center;
    margin-bottom: var(--spacing-md);
}

.section-subtitle {
    font-size: 1.125rem;
    color: var(--color-muted);
    text-align: center;
    margin-bottom: var(--spacing-xl);
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

/* ===================================
   Model Card
   =================================== */
.model-card {
    background-color: var(--color-card-bg);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-2xl);
    display: grid;
    grid-template-columns: 1fr;
    transition: transform var(--transition-base);
}

.model-card:hover {
    transform: translateY(-0.5rem);
}

.model-content {
    padding: var(--spacing-xl);
    display: flex;
    flex-direction: column;
    justify-content: center;
    order: 2;
}

.model-title {
    font-family: var(--font-headline);
    font-size: clamp(1.75rem, 4vw, 2.25rem);
    font-weight: 700;
    color: var(--color-primary);
    margin-bottom: var(--spacing-md);
}

.model-description {
    color: var(--color-muted);
    margin-bottom: var(--spacing-lg);
    line-height: 1.7;
}

.model-price {
    font-size: 2rem;
    font-weight: 700;
    color: var(--color-accent);
    margin-bottom: var(--spacing-md);
}

.model-price-details {
    font-size: 0.875rem;
    color: var(--color-muted);
    margin-bottom: var(--spacing-lg);
}

.price-note {
    font-size: 0.75rem;
    font-style: italic;
    margin-top: var(--spacing-xs);
}

.model-actions {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-md);
}

.model-image {
    position: relative;
    min-height: 300px;
    order: 1;
}

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

@media (min-width: 768px) {
    .model-card {
        grid-template-columns: 1fr 1fr;
    }

    .model-content {
        order: 1;
        padding: var(--spacing-2xl);
    }

    .model-image {
        order: 2;
        min-height: 0;
    }
}

/* ===================================
   Services Grid
   =================================== */
.services-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-lg);
}

@media (min-width: 768px) {
    .services-grid {
        grid-template-columns: 1fr;
        max-width: 800px;
        margin: 0 auto;
    }
}

.service-card {
    position: relative;
    height: 320px;
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-lg);
    transition: transform var(--transition-base);
}

.service-card:hover {
    transform: scale(1.02);
}

.service-card:hover .service-img {
    transform: scale(1.05);
}

.service-img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--transition-slow);
}

.service-overlay {
    position: absolute;
    inset: 0;
    background-color: var(--color-overlay);
}

.service-content {
    position: absolute;
    inset: 0;
    display: flex;
    flex-direction: column;
    justify-content: flex-end;
    padding: var(--spacing-xl);
    color: white;
}

.service-title {
    font-family: var(--font-headline);
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: var(--spacing-sm);
}

.service-description {
    margin-bottom: var(--spacing-md);
}

/* ===================================
   Contact Section
   =================================== */
.contact-wrapper {
    max-width: 700px;
    margin: 0 auto;
}

.contact-card {
    background-color: var(--color-card-bg);
    border-radius: var(--radius-lg);
    padding: var(--spacing-xl);
    box-shadow: var(--shadow-2xl);
    position: relative;
}

.contact-form {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

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

.form-label {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--color-foreground);
}

.form-input,
.form-textarea {
    width: 100%;
    padding: 0.75rem 1rem;
    font-family: var(--font-body);
    font-size: 0.875rem;
    color: var(--color-foreground);
    background-color: var(--color-background);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
}

.form-input:focus,
.form-textarea:focus {
    outline: none;
    border-color: var(--color-accent);
    box-shadow: 0 0 0 3px rgba(220, 38, 38, 0.1);
}

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

.form-success {
    display: none;
    text-align: center;
    padding: var(--spacing-xl);
}

.form-success.active {
    display: block;
}

.form-success.active~.contact-form {
    display: none;
}

.success-icon {
    width: 4rem;
    height: 4rem;
    margin: 0 auto var(--spacing-md);
    color: #10b981;
}

.success-icon svg {
    width: 100%;
    height: 100%;
}

.form-success h3 {
    font-family: var(--font-headline);
    font-size: 1.5rem;
    color: var(--color-primary);
    margin-bottom: var(--spacing-sm);
}

.form-success p {
    color: var(--color-muted);
}

/* ===================================
   Buttons
   =================================== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-xs);
    padding: 0.75rem 2rem;
    font-family: var(--font-headline);
    font-size: 0.875rem;
    font-weight: 600;
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
    white-space: nowrap;
}

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

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

.btn-secondary {
    background-color: transparent;
    color: var(--color-foreground);
    border: 1px solid var(--color-border);
}

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

.btn-light {
    background-color: var(--color-secondary);
    color: var(--color-foreground);
}

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

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

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

.btn-full {
    width: 100%;
}

/* ===================================
   Footer
   =================================== */
.footer {
    background-color: var(--color-primary);
    color: white;
    padding: var(--spacing-xl) 0;
}

.footer-top {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-lg);
    padding-bottom: var(--spacing-lg);
    text-align: center;
}

.footer-logo-img {
    height: 1.5rem;
    width: auto;
    filter: brightness(0) invert(1);
    margin: 0 auto;
}

.footer-social {
    display: flex;
    justify-content: center;
    gap: var(--spacing-md);
}

.social-link {
    width: 2.5rem;
    height: 2.5rem;
    display: flex;
    align-items: center;
    justify-content: center;
    color: rgba(255, 255, 255, 0.8);
    transition: all var(--transition-fast);
}

.social-link:hover {
    color: var(--color-accent);
    transform: translateY(-2px);
}

.footer-text-link {
    font-size: 0.875rem;
    color: rgba(255, 255, 255, 0.8);
    transition: color var(--transition-fast);
}

.footer-text-link:hover {
    color: var(--color-accent);
}

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.2);
    padding-top: var(--spacing-lg);
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
    text-align: center;
}

.footer-links {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: var(--spacing-md);
}

.footer-legal-link {
    font-size: 0.75rem;
    color: rgba(255, 255, 255, 0.6);
    transition: color var(--transition-fast);
}

.footer-legal-link:hover {
    color: var(--color-accent);
}

.footer-copyright {
    font-size: 0.75rem;
    color: rgba(255, 255, 255, 0.6);
}

@media (min-width: 768px) {
    .footer-top {
        grid-template-columns: 1fr 1fr 1fr;
        text-align: left;
        align-items: center;
    }

    .footer-logo-img {
        margin: 0;
    }

    .footer-social {
        justify-content: flex-end;
    }

    .footer-link {
        text-align: right;
    }

    .footer-bottom {
        flex-direction: row;
        justify-content: space-between;
        align-items: center;
        text-align: left;
    }

    .footer-links {
        justify-content: flex-start;
    }
}

/* ===================================
   Animations
   =================================== */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(2rem);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fadeIn {
    from {
        opacity: 0;
    }

    to {
        opacity: 1;
    }
}

/* ===================================
   Accessibility
   =================================== */
@media (prefers-reduced-motion: reduce) {

    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border-width: 0;
}