/* ================================================
   WELUX AESTHETIC - Main Stylesheet
   Theme: Monochrome (Black, White, Gray)
   ================================================ */

/* ================================================
   CSS VARIABLES
   ================================================ */
:root {
    /* Colors */
    --color-black: #0a0a0a;
    --color-white: #ffffff;
    --color-gray-100: #f5f5f5;
    --color-gray-200: #e5e5e5;
    --color-gray-300: #d4d4d4;
    --color-gray-400: #a3a3a3;
    --color-gray-500: #737373;
    --color-gray-600: #525252;
    --color-gray-700: #404040;
    --color-gray-800: #262626;
    --color-gray-900: #171717;
    
    /* Primary Colors */
    --color-primary: #0a0a0a;
    --color-primary-light: #262626;
    --color-secondary: #ffffff;
    --color-accent: #525252;
    
    /* Background */
    --bg-primary: #ffffff;
    --bg-secondary: #f5f5f5;
    --bg-dark: #0a0a0a;
    
    /* Text */
    --text-primary: #0a0a0a;
    --text-secondary: #525252;
    --text-light: #ffffff;
    
    /* Fonts */
    --font-heading: 'Playfair Display', serif;
    --font-body: 'Montserrat', sans-serif;
    
    /* Spacing */
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-2xl: 3rem;
    --spacing-3xl: 4rem;
    
    /* Border Radius */
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --radius-full: 50%;
    
    /* Shadows */
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.1);
    --shadow-xl: 0 20px 25px rgba(0, 0, 0, 0.15);
    
    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-normal: 300ms ease;
    --transition-slow: 500ms ease;
    
    /* Z-Index */
    --z-dropdown: 100;
    --z-sticky: 200;
    --z-fixed: 300;
    --z-modal: 400;
    --z-tooltip: 500;
}

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

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

body {
    font-family: var(--font-body);
    font-weight: 400;
    line-height: 1.6;
    color: var(--text-primary);
    background-color: var(--bg-primary);
    overflow-x: hidden;
}

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

ul {
    list-style: none;
}

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

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

input, textarea {
    font-family: inherit;
    font-size: inherit;
}

/* ================================================
   UTILITIES
   ================================================ */
.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-lg);
}

.section {
    padding: var(--spacing-3xl) 0;
}

.section__header {
    text-align: center;
    margin-bottom: var(--spacing-3xl);
}

.section__subtitle {
    display: inline-block;
    font-size: 0.875rem;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 2px;
    color: var(--color-gray-500);
    margin-bottom: var(--spacing-sm);
}

.section__title {
    font-family: var(--font-heading);
    font-size: clamp(2rem, 5vw, 3rem);
    font-weight: 600;
    color: var(--color-black);
    line-height: 1.2;
}

/* ================================================
   BUTTONS
   ================================================ */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-md) var(--spacing-xl);
    font-size: 0.9375rem;
    font-weight: 500;
    border-radius: var(--radius-md);
    transition: all var(--transition-normal);
    cursor: pointer;
}

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

.btn--primary:hover {
    background-color: var(--color-gray-800);
    border-color: var(--color-gray-800);
    transform: translateY(-2px);
}

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

.btn--outline:hover {
    background-color: var(--color-black);
    color: var(--color-white);
    transform: translateY(-2px);
}

.btn--large {
    padding: var(--spacing-lg) var(--spacing-2xl);
    font-size: 1rem;
}

.btn--full {
    width: 100%;
}

/* ================================================
   HEADER & NAVIGATION
   ================================================ */
.header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: var(--z-sticky);
    background-color: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    box-shadow: var(--shadow-sm);
    transition: all var(--transition-normal);
}

.header.scrolled {
    background-color: rgba(255, 255, 255, 0.98);
    box-shadow: var(--shadow-md);
}

.nav {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 70px;
}

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

.logo-dot {
    color: var(--color-gray-400);
}

.nav__list {
    display: flex;
    align-items: center;
    gap: var(--spacing-xl);
}

.nav__link {
    font-size: 0.9375rem;
    font-weight: 500;
    color: var(--color-gray-600);
    position: relative;
    padding: var(--spacing-sm) 0;
}

.nav__link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background-color: var(--color-black);
    transition: width var(--transition-normal);
}

.nav__link:hover,
.nav__link.active {
    color: var(--color-black);
}

.nav__link:hover::after,
.nav__link.active::after {
    width: 100%;
}

.nav__toggle,
.nav__close {
    display: none;
}

/* ================================================
   HERO SECTION
   ================================================ */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding-top: 70px;
    background-color: var(--bg-primary);
}

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

.hero__content {
    max-width: 600px;
}

.hero__subtitle {
    display: inline-block;
    font-size: 0.875rem;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 3px;
    color: var(--color-gray-500);
    margin-bottom: var(--spacing-md);
}

.hero__title {
    font-family: var(--font-heading);
    font-size: clamp(3rem, 8vw, 5rem);
    font-weight: 700;
    line-height: 1.1;
    color: var(--color-black);
    margin-bottom: var(--spacing-lg);
}

.hero__title-accent {
    color: var(--color-gray-400);
}

.hero__description {
    font-size: 1.125rem;
    color: var(--color-gray-600);
    margin-bottom: var(--spacing-xl);
    max-width: 500px;
}

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

.hero__image {
    display: flex;
    justify-content: center;
    align-items: center;
}

.hero__image-wrapper {
    width: 100%;
    max-width: 500px;
    aspect-ratio: 1;
    border-radius: var(--radius-lg);
    overflow: hidden;
    position: relative;
}

.hero__image-placeholder {
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, var(--color-gray-200) 0%, var(--color-gray-300) 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    font-family: var(--font-heading);
    font-size: 3rem;
    font-weight: 700;
    color: var(--color-gray-500);
}

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

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

.about__text p {
    font-size: 1rem;
    color: var(--color-gray-600);
    margin-bottom: var(--spacing-lg);
}

.about__stats {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-xl);
    margin-top: var(--spacing-2xl);
    padding-top: var(--spacing-2xl);
    border-top: 1px solid var(--color-gray-200);
}

.about__stat {
    text-align: center;
}

.about__stat-number {
    display: block;
    font-family: var(--font-heading);
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--color-black);
    line-height: 1;
}

.about__stat-label {
    font-size: 0.875rem;
    color: var(--color-gray-500);
    margin-top: var(--spacing-sm);
}

.about__image-wrapper {
    width: 100%;
    aspect-ratio: 4/3;
    border-radius: var(--radius-lg);
    overflow: hidden;
}

.about__image-placeholder {
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, var(--color-gray-300) 0%, var(--color-gray-400) 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    font-family: var(--font-heading);
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--color-white);
}

/* ================================================
   PRODUCTS SECTION
   ================================================ */
.products {
    background-color: var(--bg-primary);
}

.products__filter {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-2xl);
}

.products__filter-btn {
    padding: var(--spacing-sm) var(--spacing-lg);
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--color-gray-500);
    border: 2px solid var(--color-gray-200);
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
}

.products__filter-btn:hover,
.products__filter-btn.active {
    color: var(--color-white);
    background-color: var(--color-black);
    border-color: var(--color-black);
}

.products__grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: var(--spacing-xl);
}

.product-card {
    background-color: var(--color-white);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-md);
    transition: all var(--transition-normal);
}

.product-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-xl);
}

.product-card__image {
    width: 100%;
    aspect-ratio: 1;
    background-color: var(--color-gray-200);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1rem;
    color: var(--color-gray-500);
    overflow: hidden;
}

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

.product-card__content {
    padding: var(--spacing-lg);
}

.product-card__category {
    font-size: 0.75rem;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 1px;
    color: var(--color-gray-400);
    margin-bottom: var(--spacing-sm);
}

.product-card__title {
    font-family: var(--font-heading);
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--color-black);
    margin-bottom: var(--spacing-sm);
}

.product-card__description {
    font-size: 0.875rem;
    color: var(--color-gray-500);
    margin-bottom: var(--spacing-md);
}

.product-card__footer {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding-top: var(--spacing-md);
    border-top: 1px solid var(--color-gray-200);
}

.product-card__price {
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--color-black);
}

.product-card__btn {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-sm) var(--spacing-md);
    font-size: 0.8125rem;
    font-weight: 500;
    color: var(--color-white);
    background-color: var(--color-black);
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
}

.product-card__btn:hover {
    background-color: var(--color-gray-800);
    transform: translateY(-2px);
}

/* ================================================
   GALLERY SECTION
   ================================================ */
.gallery {
    background-color: var(--bg-secondary);
}

.gallery__grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-md);
}

.gallery__item {
    position: relative;
    aspect-ratio: 1;
    border-radius: var(--radius-md);
    overflow: hidden;
    cursor: pointer;
}

.gallery__item-image {
    width: 100%;
    height: 100%;
    background-color: var(--color-gray-300);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.875rem;
    color: var(--color-gray-500);
    transition: transform var(--transition-slow);
}

.gallery__item:hover .gallery__item-image {
    transform: scale(1.1);
}

.gallery__item-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(to top, rgba(0, 0, 0, 0.7) 0%, transparent 100%);
    display: flex;
    align-items: flex-end;
    padding: var(--spacing-lg);
    opacity: 0;
    transition: opacity var(--transition-normal);
}

.gallery__item:hover .gallery__item-overlay {
    opacity: 1;
}

.gallery__item-caption {
    color: var(--color-white);
    font-size: 0.875rem;
    font-weight: 500;
}

/* ================================================
   INSTAGRAM SECTION
   ================================================ */
.instagram {
    background-color: var(--bg-primary);
}

.instagram__feed {
    display: grid;
    grid-template-columns: repeat(6, 1fr);
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-2xl);
}

.instagram__post {
    aspect-ratio: 1;
    border-radius: var(--radius-md);
    overflow: hidden;
    cursor: pointer;
}

.instagram__post-image {
    width: 100%;
    height: 100%;
    background-color: var(--color-gray-200);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: transform var(--transition-normal);
}

.instagram__post:hover .instagram__post-image {
    transform: scale(1.05);
}

.instagram__post-placeholder {
    font-size: 0.75rem;
    color: var(--color-gray-500);
}

.instagram__cta {
    text-align: center;
}

/* ================================================
   CONTACT SECTION
   ================================================ */
.contact {
    background-color: var(--bg-secondary);
}

.contact__content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-3xl);
}

.contact__info {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xl);
}

.contact__info-item {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-lg);
}

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

.contact__info-label {
    display: block;
    font-size: 0.875rem;
    color: var(--color-gray-500);
    margin-bottom: var(--spacing-xs);
}

.contact__info-value {
    font-size: 1rem;
    font-weight: 500;
    color: var(--color-black);
}

.contact__info-value:hover {
    color: var(--color-gray-600);
}

.contact__form {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
}

.form__group {
    position: relative;
}

.form__input {
    width: 100%;
    padding: var(--spacing-lg);
    font-size: 1rem;
    border: 2px solid var(--color-gray-200);
    border-radius: var(--radius-md);
    background-color: var(--color-white);
    transition: all var(--transition-fast);
}

.form__input:focus {
    outline: none;
    border-color: var(--color-black);
}

.form__label {
    position: absolute;
    left: var(--spacing-lg);
    top: 50%;
    transform: translateY(-50%);
    font-size: 1rem;
    color: var(--color-gray-400);
    pointer-events: none;
    transition: all var(--transition-fast);
}

.form__textarea + .form__label {
    top: var(--spacing-lg);
    transform: none;
}

.form__input:focus + .form__label,
.form__input:not(:placeholder-shown) + .form__label {
    top: -10px;
    left: var(--spacing-md);
    font-size: 0.75rem;
    background-color: var(--color-white);
    padding: 0 var(--spacing-xs);
    color: var(--color-black);
}

.form__textarea {
    min-height: 150px;
    resize: vertical;
}

/* ================================================
   FOOTER
   ================================================ */
.footer {
    background-color: var(--bg-dark);
    color: var(--text-light);
    padding: var(--spacing-3xl) 0 var(--spacing-xl);
}

.footer__content {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr;
    gap: var(--spacing-3xl);
    margin-bottom: var(--spacing-2xl);
}

.footer__logo {
    font-family: var(--font-heading);
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--color-white);
    display: inline-block;
    margin-bottom: var(--spacing-md);
}

.footer__description {
    font-size: 0.9375rem;
    color: var(--color-gray-400);
    max-width: 300px;
}

.footer__links-title {
    font-size: 1rem;
    font-weight: 600;
    color: var(--color-white);
    margin-bottom: var(--spacing-lg);
}

.footer__links-list li {
    margin-bottom: var(--spacing-sm);
}

.footer__links-list a {
    font-size: 0.9375rem;
    color: var(--color-gray-400);
    transition: color var(--transition-fast);
}

.footer__links-list a:hover {
    color: var(--color-white);
}

.footer__social-links {
    display: flex;
    gap: var(--spacing-md);
}

.footer__social-link {
    width: 40px;
    height: 40px;
    background-color: var(--color-gray-800);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-gray-400);
    transition: all var(--transition-fast);
}

.footer__social-link:hover {
    background-color: var(--color-white);
    color: var(--color-black);
}

.footer__bottom {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding-top: var(--spacing-xl);
    border-top: 1px solid var(--color-gray-800);
}

.footer__visitor {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-size: 0.875rem;
    color: var(--color-gray-400);
}

.footer__visitor svg {
    opacity: 0.7;
}

#visitor-count {
    font-weight: 600;
    color: var(--color-white);
}

.footer__copyright {
    font-size: 0.875rem;
    color: var(--color-gray-500);
}

/* ================================================
   MODAL / LIGHTBOX
   ================================================ */
.modal {
    position: fixed;
    inset: 0;
    background-color: rgba(0, 0, 0, 0.95);
    z-index: var(--z-modal);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-normal);
}

.modal.active {
    opacity: 1;
    visibility: visible;
}

.modal__close {
    position: absolute;
    top: var(--spacing-xl);
    right: var(--spacing-xl);
    color: var(--color-white);
    padding: var(--spacing-sm);
    z-index: 10;
}

.modal__content {
    max-width: 90vw;
    max-height: 90vh;
}

.modal__content img {
    max-width: 100%;
    max-height: 90vh;
    object-fit: contain;
}

/* ================================================
   WHATSAPP FLOAT BUTTON
   ================================================ */
.whatsapp-float {
    position: fixed;
    bottom: var(--spacing-xl);
    right: var(--spacing-xl);
    width: 60px;
    height: 60px;
    background-color: #25d366;
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-white);
    box-shadow: var(--shadow-lg);
    z-index: var(--z-fixed);
    transition: all var(--transition-normal);
}

.whatsapp-float:hover {
    transform: scale(1.1);
    box-shadow: var(--shadow-xl);
}

/* ================================================
   RESPONSIVE DESIGN
   ================================================ */
@media screen and (max-width: 1024px) {
    .hero__container {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .hero__content {
        max-width: 100%;
    }
    
    .hero__description {
        max-width: 100%;
    }
    
    .hero__buttons {
        justify-content: center;
    }
    
    .hero__image {
        order: -1;
    }
    
    .hero__image-wrapper {
        max-width: 400px;
    }
    
    .about__content {
        grid-template-columns: 1fr;
    }
    
    .contact__content {
        grid-template-columns: 1fr;
    }
    
    .footer__content {
        grid-template-columns: 1fr 1fr;
    }
}

@media screen and (max-width: 768px) {
    .nav__menu {
        position: fixed;
        top: 0;
        right: -100%;
        width: 80%;
        max-width: 300px;
        height: 100vh;
        background-color: var(--color-white);
        box-shadow: var(--shadow-xl);
        padding: var(--spacing-3xl) var(--spacing-xl);
        transition: right var(--transition-normal);
        z-index: var(--z-modal);
    }
    
    .nav__menu.active {
        right: 0;
    }
    
    .nav__list {
        flex-direction: column;
        align-items: flex-start;
        gap: var(--spacing-lg);
    }
    
    .nav__link {
        font-size: 1.125rem;
    }
    
    .nav__toggle {
        display: block;
    }
    
    .nav__close {
        display: block;
        position: absolute;
        top: var(--spacing-lg);
        right: var(--spacing-lg);
    }
    
    .hero__title {
        font-size: clamp(2.5rem, 10vw, 4rem);
    }
    
    .about__stats {
        grid-template-columns: repeat(3, 1fr);
        gap: var(--spacing-md);
    }
    
    .products__grid {
        grid-template-columns: 1fr;
    }
    
    .gallery__grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .instagram__feed {
        grid-template-columns: repeat(3, 1fr);
    }
    
    .footer__content {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .footer__description {
        max-width: 100%;
    }
    
    .footer__social-links {
        justify-content: center;
    }
    
    .footer__bottom {
        flex-direction: column;
        gap: var(--spacing-md);
        text-align: center;
    }
}

@media screen and (max-width: 480px) {
    .container {
        padding: 0 var(--spacing-md);
    }
    
    .section {
        padding: var(--spacing-2xl) 0;
    }
    
    .hero {
        min-height: auto;
        padding: 100px 0 var(--spacing-2xl);
    }
    
    .hero__buttons {
        flex-direction: column;
        width: 100%;
    }
    
    .hero__buttons .btn {
        width: 100%;
    }
    
    .about__stats {
        grid-template-columns: 1fr;
        gap: var(--spacing-lg);
    }
    
    .gallery__grid {
        grid-template-columns: 1fr;
    }
    
    .instagram__feed {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .whatsapp-float {
        width: 50px;
        height: 50px;
        bottom: var(--spacing-md);
        right: var(--spacing-md);
    }
    
    .whatsapp-float svg {
        width: 24px;
        height: 24px;
    }
}

/* ================================================
   ANIMATIONS
   ================================================ */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes slideIn {
    from {
        opacity: 0;
        transform: translateX(-20px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

.fade-in {
    animation: fadeIn 0.6s ease forwards;
}

.slide-in {
    animation: slideIn 0.6s ease forwards;
}

/* Scroll Reveal Animation Classes */
.reveal {
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.8s ease;
}

.reveal.active {
    opacity: 1;
    transform: translateY(0);
}