/* ===============================
   CSS VARIABLES & ROOT STYLES
=============================== */

:root {
    /* Colors based on MAQSER logo */
    --primary-color: #1e88e5;
    --primary-dark: #1565c0;
    --secondary-color: #3f51b5;
    --accent-color: #00bcd4;
    --dark-color: #263238;
    --text-dark: #2c3e50;
    --text-light: #7b8794;
    --white: #ffffff;
    --light-bg: #f8fafc;
    --border-color: #e2e8f0;
    --shadow-color: rgba(0, 0, 0, 0.1);
    --header-height: 80px;
    
    /* Typography */
    --font-primary: 'Roboto', sans-serif;
    --font-secondary: 'Open Sans', sans-serif;
    
    /* Spacing */
    --container-max-width: 1200px;
    --section-padding: 80px 0;
    --element-spacing: 2rem;
    
    /* Transitions */
    --transition-fast: 0.3s ease;
    --transition-medium: 0.5s ease;
    
    /* Shadows */
    --shadow-light: 0 2px 10px rgba(0, 0, 0, 0.1);
    --shadow-medium: 0 4px 20px rgba(0, 0, 0, 0.15);
    --shadow-heavy: 0 8px 30px rgba(0, 0, 0, 0.2);
}

/* ===============================
   RESET & BASE STYLES
=============================== */

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

html {
    scroll-behavior: smooth;
    font-size: 16px;
    scroll-padding-top: var(--header-height, 80px);
}

body {
    font-family: var(--font-primary);
    font-size: 1rem;
    line-height: 1.6;
    color: var(--text-dark);
    background-color: var(--white);
    overflow-x: hidden;
}

section[id] {
    scroll-margin-top: var(--header-height, 80px);
}

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

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

ul {
    list-style: none;
}

button {
    border: none;
    background: none;
    cursor: pointer;
    font-family: inherit;
    transition: var(--transition-fast);
}

input, textarea, select {
    font-family: inherit;
    border: none;
    outline: none;
}

/* ===============================
   UTILITY CLASSES
=============================== */

.container {
    max-width: var(--container-max-width);
    margin: 0 auto;
    padding: 0 20px;
}

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

.text-primary {
    color: var(--primary-color);
}

.text-secondary {
    color: var(--secondary-color);
}

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

.bg-light {
    background-color: var(--light-bg);
}

.section-padding {
    padding: var(--section-padding);
}

/* ===============================
   BUTTONS
=============================== */

.btn {
    display: inline-block;
    padding: 12px 30px;
    border-radius: 50px;
    font-weight: 500;
    font-size: 0.95rem;
    text-align: center;
    transition: var(--transition-fast);
    cursor: pointer;
    border: 2px solid transparent;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
    color: var(--white);
    box-shadow: var(--shadow-light);
}

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

.btn-outline {
    background: transparent;
    color: var(--primary-color);
    border-color: var(--primary-color);
}

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

/* ===============================
   HEADER & NAVIGATION
=============================== */

.header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    background: var(--white);
    box-shadow: var(--shadow-light);
    z-index: 1000;
    transition: var(--transition-fast);
}

.navbar {
    padding: 1rem 0;
}

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

.nav-brand {
    display: flex;
    align-items: center;
    gap: 12px;
}

.logo {
    width: 50px;
    height: 50px;
    border-radius: 50%;
}

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

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

.nav-list {
    display: flex;
    gap: 2rem;
}

.nav-link {
    font-weight: 500;
    color: var(--text-dark);
    padding: 8px 16px;
    border-radius: 25px;
    transition: var(--transition-fast);
    position: relative;
}

.nav-link:hover,
.nav-link.active {
    color: var(--primary-color);
    background: rgba(30, 136, 229, 0.1);
}

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

.cart-btn {
    position: relative;
    padding: 10px;
    background: var(--light-bg);
    border-radius: 50%;
    color: var(--text-dark);
    font-size: 1.2rem;
    transition: var(--transition-fast);
}

.cart-btn:hover {
    background: var(--primary-color);
    color: var(--white);
    transform: scale(1.1);
}

.cart-count {
    position: absolute;
    top: -5px;
    right: -5px;
    background: var(--accent-color);
    color: var(--white);
    border-radius: 50%;
    width: 20px;
    height: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.75rem;
    font-weight: 600;
}

.nav-toggle {
    display: none;
    align-items: center;
    justify-content: center;
    padding: 10px;
    background: transparent;
    border: none;
    cursor: pointer;
}

.hamburger {
    position: relative;
    display: block;
    width: 26px;
    height: 3px;
    background: var(--text-dark);
    border-radius: 2px;
    transition: background 0.3s ease;
}

.hamburger::before,
.hamburger::after {
    content: '';
    position: absolute;
    left: 0;
    width: 26px;
    height: 3px;
    background: var(--text-dark);
    border-radius: 2px;
    transition: transform 0.3s ease, top 0.3s ease;
}

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

.hamburger::after {
    top: 8px;
}

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

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

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

/* ===============================
   HERO SECTION
=============================== */

.hero {
    min-height: 100vh;
    min-height: 100dvh;
    display: flex;
    align-items: center;
    position: relative;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    overflow: hidden;
    box-sizing: border-box;
    scroll-margin-top: var(--header-height, 80px);
}

.hero .container {
    width: 100%;
    padding-top: calc(var(--header-height, 80px) + 1.5rem);
    padding-bottom: 2rem;
}

.hero .animate-on-scroll {
    opacity: 1;
    transform: none;
}

.hero .animate-on-scroll.animated {
    opacity: 1;
    transform: none;
}

.hero-background {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: url('../img/hero-bg.jpg') center/cover no-repeat;
}

.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, 
        rgba(30, 136, 229, 0.9), 
        rgba(63, 81, 181, 0.8)
    );
}

.hero-content {
    position: relative;
    z-index: 2;
    text-align: center;
    color: var(--white);
    max-width: 800px;
    margin: 0 auto;
}

.hero-title {
    font-size: clamp(2.5rem, 5vw, 4rem);
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: 1.5rem;
    text-shadow: 0 2px 10px rgba(0, 0, 0, 0.3);
}

.hero-subtitle {
    font-size: clamp(1.1rem, 2vw, 1.3rem);
    line-height: 1.6;
    margin-bottom: 3rem;
    opacity: 0.95;
}

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

/* ===============================
   SECTION HEADERS
=============================== */

.section-header {
    text-align: center;
    margin-bottom: 4rem;
}

.section-title {
    font-size: clamp(2rem, 4vw, 3rem);
    font-weight: 700;
    color: var(--dark-color);
    margin-bottom: 1rem;
    position: relative;
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 4px;
    background: linear-gradient(90deg, var(--primary-color), var(--accent-color));
    border-radius: 2px;
}

.section-subtitle {
    font-size: 1.1rem;
    color: var(--text-light);
    max-width: 600px;
    margin: 0 auto;
    line-height: 1.6;
}

/* ===============================
   PRODUCTS SECTION
=============================== */

.products {
    padding: var(--section-padding);
    background: var(--light-bg);
}

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

.filter-btn {
    padding: 10px 20px;
    background: var(--white);
    color: var(--text-dark);
    border-radius: 25px;
    font-weight: 500;
    transition: var(--transition-fast);
    box-shadow: var(--shadow-light);
}

.filter-btn:hover,
.filter-btn.active {
    background: var(--primary-color);
    color: var(--white);
    transform: translateY(-2px);
}

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

.product-card {
    background: var(--white);
    border-radius: 15px;
    overflow: hidden;
    box-shadow: var(--shadow-light);
    transition: var(--transition-medium);
    position: relative;
}

.product-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-heavy);
}

.product-image {
    position: relative;
    overflow: hidden;
    height: 250px;
}

.product-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: var(--transition-medium);
}

.product-card:hover .product-image img {
    transform: scale(1.1);
}

.product-badge {
    position: absolute;
    top: 15px;
    right: 15px;
    background: var(--accent-color);
    color: var(--white);
    padding: 5px 12px;
    border-radius: 15px;
    font-size: 0.8rem;
    font-weight: 600;
}

.product-info {
    padding: 1.5rem;
}

.product-category {
    color: var(--text-light);
    font-size: 0.85rem;
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: 0.5rem;
}

.product-name {
    font-size: 1.2rem;
    font-weight: 600;
    color: var(--dark-color);
    margin-bottom: 0.5rem;
    line-height: 1.3;
}

.product-description {
    color: var(--text-light);
    font-size: 0.9rem;
    line-height: 1.5;
    margin-bottom: 1rem;
}

.product-price {
    font-size: 1.3rem;
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: 1rem;
}

.product-actions {
    display: flex;
    gap: 0.5rem;
}

.btn-small {
    padding: 8px 16px;
    font-size: 0.85rem;
    flex: 1;
}

/* ===============================
   SERVICES SECTION
=============================== */

.services {
    padding: var(--section-padding);
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.service-card {
    background: var(--white);
    padding: 2.5rem 2rem;
    border-radius: 15px;
    box-shadow: var(--shadow-light);
    text-align: center;
    transition: var(--transition-medium);
    border: 1px solid var(--border-color);
}

.service-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-heavy);
    border-color: var(--primary-color);
}

.service-icon {
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1.5rem;
    font-size: 2rem;
    color: var(--white);
}

.service-title {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--dark-color);
    margin-bottom: 1rem;
}

.service-description {
    color: var(--text-light);
    line-height: 1.6;
    margin-bottom: 1.5rem;
}

.service-features {
    text-align: left;
    margin-bottom: 2rem;
}

.service-features li {
    padding: 8px 0;
    color: var(--text-dark);
    position: relative;
    padding-left: 25px;
}

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

.service-btn {
    width: 100%;
}

/* ===============================
   ABOUT SECTION
=============================== */

.about {
    padding: var(--section-padding);
    background: var(--light-bg);
}

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

.about-text .section-header {
    text-align: left;
    margin-bottom: 2rem;
}

.about-text .section-title::after {
    left: 0;
    transform: none;
}

.about-description {
    margin-bottom: 2rem;
}

.about-description p {
    color: var(--text-light);
    line-height: 1.7;
    margin-bottom: 1rem;
}

.about-features {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.feature-item {
    display: flex;
    align-items: flex-start;
    gap: 1rem;
}

.feature-item i {
    width: 50px;
    height: 50px;
    background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
    color: var(--white);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    flex-shrink: 0;
}

.feature-item h4 {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--dark-color);
    margin-bottom: 0.5rem;
}

.feature-item p {
    color: var(--text-light);
    line-height: 1.5;
}

.about-image {
    position: relative;
}

.about-image img {
    border-radius: 15px;
    box-shadow: var(--shadow-medium);
}

/* ===============================
   CONTACT SECTION
=============================== */

.contact {
    padding: var(--section-padding);
}

.contact-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    margin-top: 3rem;
}

.contact-info {
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

.contact-item {
    display: flex;
    align-items: flex-start;
    gap: 1rem;
}

.contact-item i {
    width: 50px;
    height: 50px;
    background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
    color: var(--white);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    flex-shrink: 0;
}

.contact-item h4 {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--dark-color);
    margin-bottom: 0.5rem;
}

.contact-item p {
    color: var(--text-light);
    line-height: 1.5;
}

.contact-whatsapp-cta {
    display: flex;
    align-items: stretch;
}

.contact-whatsapp-cta .cta-card-simple {
    width: 100%;
    text-align: center;
}

.contact-whatsapp-cta p {
    color: var(--text-light);
    margin-bottom: 1.25rem;
}

.contact-whatsapp-note {
    margin-top: 1rem;
    color: var(--text-light);
}

.contact-form {
    background: var(--white);
    padding: 2rem;
    border-radius: 15px;
    box-shadow: var(--shadow-light);
}

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

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 15px;
    border: 2px solid var(--border-color);
    border-radius: 10px;
    font-size: 1rem;
    transition: var(--transition-fast);
    background: var(--white);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(30, 136, 229, 0.1);
}

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

/* ===============================
   FOOTER
=============================== */

.footer {
    background: var(--dark-color);
    color: var(--white);
    padding: 3rem 0 1rem;
}

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

.footer-section h4 {
    font-size: 1.2rem;
    font-weight: 600;
    margin-bottom: 1rem;
    color: var(--white);
}

.footer-section ul {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.footer-section a {
    color: rgba(255, 255, 255, 0.8);
    transition: var(--transition-fast);
}

.footer-section a:hover {
    color: var(--primary-color);
}

.footer-brand {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.footer-logo {
    width: 60px;
    height: 60px;
    border-radius: 50%;
}

.footer-brand p {
    color: rgba(255, 255, 255, 0.8);
    line-height: 1.6;
}

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

.social-link {
    width: 40px;
    height: 40px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition-fast);
}

.social-link:hover {
    background: var(--primary-color);
    transform: translateY(-3px);
}

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.2);
    padding-top: 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 1rem;
}

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

.footer-link {
    color: rgba(255, 255, 255, 0.8);
    font-size: 0.9rem;
    transition: var(--transition-fast);
}

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

/* ===============================
   CART MODAL
=============================== */

.cart-modal {
    position: fixed;
    top: 0;
    right: -100%;
    width: 400px;
    height: 100vh;
    background: var(--white);
    z-index: 2000;
    transition: var(--transition-medium);
    box-shadow: var(--shadow-heavy);
}

.cart-modal.active {
    right: 0;
}

.cart-content {
    height: 100%;
    display: flex;
    flex-direction: column;
}

.cart-header {
    padding: 1.5rem;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.cart-header h3 {
    font-size: 1.3rem;
    font-weight: 600;
    color: var(--dark-color);
}

.cart-close {
    width: 35px;
    height: 35px;
    border-radius: 50%;
    background: var(--light-bg);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.1rem;
    color: var(--text-dark);
    transition: var(--transition-fast);
}

.cart-close:hover {
    background: var(--primary-color);
    color: var(--white);
}

.cart-body {
    flex: 1;
    padding: 1rem;
    overflow-y: auto;
}

.cart-footer {
    padding: 1.5rem;
    border-top: 1px solid var(--border-color);
    background: var(--light-bg);
}

.cart-total {
    text-align: center;
    font-size: 1.2rem;
    margin-bottom: 1rem;
    color: var(--dark-color);
}

.cart-actions {
    display: flex;
    gap: 0.5rem;
}

.cart-actions .btn {
    flex: 1;
    padding: 12px;
    font-size: 0.9rem;
}

.overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
    z-index: 1500;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition-fast);
}

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

/* ===============================
   ANIMATIONS
=============================== */

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fadeInLeft {
    from {
        opacity: 0;
        transform: translateX(-30px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes fadeInRight {
    from {
        opacity: 0;
        transform: translateX(30px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

.animate-on-scroll {
    opacity: 0;
    animation: fadeInUp 0.8s ease forwards;
}

/* ===============================
   LOADING STATES
=============================== */

.loading {
    position: relative;
    pointer-events: none;
    opacity: 0.7;
}

.loading::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 20px;
    height: 20px;
    margin: -10px 0 0 -10px;
    border: 2px solid var(--border-color);
    border-top-color: var(--primary-color);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    to {
        transform: rotate(360deg);
    }
}