/* ========================================
   GRAPHITECH SOLUCIONES - APPLE STYLE
   ======================================== */

/* Reset & Variables */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    /* Colores de marca */
    --primary-blue: #0066B3;
    --accent-orange: #E85D2A;
    --accent-yellow: #F7B500;
    
    /* Colores base Apple Style */
    --white: #FFFFFF;
    --black: #1D1D1F;
    --gray-50: #FAFAFA;
    --gray-100: #F5F5F7;
    --gray-200: #E8E8ED;
    --gray-400: #86868B;
    --gray-600: #6E6E73;
    --gray-700: #515154;
    --gray-900: #1D1D1F;
    
    /* Tipografía */
    --font-primary: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Helvetica Neue', Arial, sans-serif;
    
    /* Espaciado */
    --section-padding: 100px 0;
    --container-max: 1200px;
    
    /* Sombras */
    --shadow-sm: 0 2px 8px rgba(0,0,0,0.04);
    --shadow-md: 0 4px 16px rgba(0,0,0,0.08);
    --shadow-lg: 0 8px 32px rgba(0,0,0,0.12);
}

/* ========================================
   BASE STYLES
   ======================================== */

body {
    font-family: var(--font-primary);
    color: var(--black);
    background: var(--white);
    line-height: 1.6;
    font-size: 17px;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

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

/* ========================================
   TYPOGRAPHY
   ======================================== */

h1, h2, h3, h4 {
    font-weight: 600;
    line-height: 1.1;
    letter-spacing: -0.02em;
}

h1 {
    font-size: clamp(40px, 6vw, 72px);
}

h2 {
    font-size: clamp(32px, 4vw, 56px);
}

h3 {
    font-size: clamp(24px, 3vw, 32px);
}

h4 {
    font-size: clamp(18px, 2vw, 24px);
}

p {
    font-size: 17px;
    line-height: 1.6;
    color: var(--gray-600);
}

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

.btn-primary,
.btn-primary-large {
    display: inline-block;
    background: var(--primary-blue);
    color: var(--white);
    padding: 12px 24px;
    border-radius: 980px;
    text-decoration: none;
    font-weight: 500;
    font-size: 15px;
    transition: all 0.3s ease;
    border: none;
    cursor: pointer;
}

.btn-primary-large {
    padding: 16px 32px;
    font-size: 17px;
}

.btn-primary:hover,
.btn-primary-large:hover {
    background: #0052CC;
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.btn-secondary-large {
    display: inline-block;
    background: transparent;
    color: var(--primary-blue);
    padding: 16px 32px;
    border-radius: 980px;
    text-decoration: none;
    font-weight: 500;
    font-size: 17px;
    border: 2px solid var(--primary-blue);
    transition: all 0.3s ease;
}

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

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

header {
    position: sticky;
    top: 0;
    background: rgba(255, 255, 255, 0.8);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--gray-200);
    z-index: 1000;
}

.navbar {
    padding: 8px 0;
}

.nav-wrapper {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 40px;
}

.logo img {
    height: 55px;
    display: block;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 32px;
    margin: 0;
    padding: 0;
}

.nav-menu a {
    color: var(--gray-600);
    text-decoration: none;
    font-size: 15px;
    font-weight: 400;
    transition: color 0.2s ease;
}

.nav-menu a:hover,
.nav-menu a.active {
    color: var(--black);
}

.mobile-menu-toggle {
    display: none;
    flex-direction: column;
    gap: 4px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 8px;
}

.mobile-menu-toggle span {
    width: 20px;
    height: 2px;
    background: var(--black);
    transition: all 0.3s ease;
}

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

.hero {
    padding: 160px 0 100px;
    text-align: center;
    background: linear-gradient(180deg, var(--gray-50) 0%, var(--white) 100%);
}

.hero-content {
    max-width: 800px;
    margin: 0 auto;
}

.hero-title {
    margin-bottom: 24px;
    color: var(--black);
}

.hero-subtitle {
    font-size: 24px;
    font-weight: 500;
    color: var(--primary-blue);
    margin-bottom: 16px;
}

.hero-description {
    font-size: 19px;
    color: var(--gray-600);
    margin-bottom: 40px;
    max-width: 750px;
    margin-left: auto;
    margin-right: auto;
}

.hero-cta {
    display: flex;
    gap: 16px;
    justify-content: center;
    flex-wrap: wrap;
}

/* ========================================
   FEATURES SECTION
   ======================================== */

.features {
    padding: 140px 0 120px 0;
    background: var(--white);
}

.section-title {
    text-align: center;
    margin-bottom: 60px;
    color: var(--black);
}

.section-subtitle {
    text-align: center;
    font-size: 19px;
    color: var(--gray-600);
    margin-bottom: 60px;
    margin-top: -40px;
}

.section-title:not(:has(+ .section-subtitle)) {
    margin-bottom: 60px;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 40px;
}

.feature-card {
    text-align: center;
    padding: 40px 24px;
    border-radius: 20px;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
    background: var(--white);
}

.feature-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    opacity: 0.08;
    z-index: 0;
    border-radius: 20px;
    transition: opacity 0.3s ease;
    background: linear-gradient(135deg, var(--primary-blue) 0%, transparent 100%);
}

.feature-card:hover::before {
    opacity: 0.15;
}

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

.feature-card h3,
.feature-card p {
    position: relative;
    z-index: 1;
}

.feature-icon {
    display: none;
}

.feature-card h3 {
    margin-bottom: 16px;
    color: var(--black);
}

.feature-card p {
    font-size: 17px;
    color: var(--gray-600);
}

/* ========================================
   MATERIALS SECTION
   ======================================== */

.materials {
    padding: var(--section-padding);
    background: var(--gray-50);
}

.materials-grid {
    display: grid;
    grid-template-columns: repeat(6, 1fr);
    gap: 24px;
}

@media (max-width: 1024px) {
    .materials-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

@media (max-width: 768px) {
    .materials-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

.material-item {
    padding: 32px 24px;
    border-radius: 16px;
    text-align: center;
    transition: all 0.3s ease;
    border: 1px solid var(--gray-200);
    position: relative;
    overflow: hidden;
    background: var(--white);
}

.material-item::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    opacity: 0.08;
    z-index: 0;
    border-radius: 16px;
    transition: opacity 0.3s ease;
}

.material-item:nth-child(1)::before,
.material-item:nth-child(4)::before {
    background: linear-gradient(135deg, var(--primary-blue) 0%, transparent 100%);
}

.material-item:nth-child(2)::before,
.material-item:nth-child(5)::before {
    background: linear-gradient(135deg, var(--accent-orange) 0%, transparent 100%);
}

.material-item:nth-child(3)::before,
.material-item:nth-child(6)::before {
    background: linear-gradient(135deg, var(--accent-yellow) 0%, transparent 100%);
}

.material-item:hover::before {
    opacity: 0.15;
}

.material-item:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
    border-color: transparent;
}

.material-item h4,
.material-item p {
    position: relative;
    z-index: 1;
}

.material-icon {
    display: none;
}

.material-item h4 {
    margin-bottom: 8px;
    color: var(--black);
}

.material-item p {
    font-size: 15px;
    color: var(--gray-600);
}

.materials .section-title {
    margin-bottom: 60px;
}

/* ========================================
   SECTORS SECTION
   ======================================== */

.sectors {
    padding: var(--section-padding);
    background: var(--white);
}

.sectors-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
    max-width: 1200px;
    margin: 0 auto;
}

@media (max-width: 1024px) {
    .sectors-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

@media (max-width: 768px) {
    .sectors-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 480px) {
    .sectors-grid {
        grid-template-columns: 1fr;
    }
}

.sector-card {
    padding: 40px 32px;
    border-radius: 16px;
    text-align: left;
    transition: all 0.3s ease;
    background: var(--gray-50);
}

.sector-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
    background: var(--white);
}

.sector-card h4 {
    color: var(--black);
    margin-bottom: 12px;
    font-size: 20px;
    font-weight: 600;
}

.sector-card p {
    color: var(--gray-600);
    font-size: 15px;
    line-height: 1.6;
    margin: 0;
}

/* ========================================
   CTA SECTION
   ======================================== */

.cta-section {
    padding: var(--section-padding);
    background: var(--primary-blue);
    text-align: center;
    color: var(--white);
}

.cta-section h2 {
    color: var(--white);
    margin-bottom: 16px;
}

.cta-section p {
    color: rgba(255, 255, 255, 0.9);
    font-size: 19px;
    margin-bottom: 32px;
}

.cta-section .btn-primary-large {
    background: var(--white);
    color: var(--primary-blue);
}

.cta-section .btn-primary-large:hover {
    background: var(--gray-100);
    color: var(--primary-blue);
}

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

footer {
    background: var(--black);
    color: var(--white);
    padding: 60px 0 32px;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 40px;
    margin-bottom: 40px;
}

.footer-section h4 {
    color: var(--white);
    margin-bottom: 16px;
    font-size: 18px;
}

.footer-section p {
    color: var(--gray-400);
    margin-bottom: 8px;
    font-size: 15px;
}

.footer-logo {
    height: 50px;
    margin-bottom: 16px;
    filter: brightness(0) invert(1);
}

.social-link {
    color: var(--gray-400);
    text-decoration: none;
    transition: color 0.2s ease;
}

.social-link:hover {
    color: var(--white);
}

.footer-bottom {
    padding-top: 32px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    text-align: center;
}

.footer-bottom p {
    color: var(--gray-400);
    font-size: 14px;
}

/* ========================================
   PAGE HERO
   ======================================== */

.page-hero {
    padding: 100px 0 60px;
    text-align: center;
    background: linear-gradient(180deg, var(--gray-50) 0%, var(--white) 100%);
}

.page-hero h1 {
    margin-bottom: 16px;
}

.page-hero p {
    font-size: 21px;
    color: var(--gray-600);
}

/* ========================================
   SERVICES PAGE
   ======================================== */

.service-detail {
    padding: 80px 0;
}

.service-detail.alternate {
    background: var(--gray-50);
}

.service-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.service-text h2 {
    margin-bottom: 24px;
    color: var(--black);
}

.service-lead {
    font-size: 19px;
    color: var(--gray-600);
    margin-bottom: 32px;
    line-height: 1.6;
}

.service-text h3 {
    font-size: 24px;
    margin-top: 32px;
    margin-bottom: 16px;
    color: var(--black);
}

.service-list {
    list-style: none;
    padding: 0;
}

.service-list li {
    padding: 12px 0;
    border-bottom: 1px solid var(--gray-200);
    color: var(--gray-600);
    font-size: 17px;
}

.service-list li strong {
    color: var(--black);
}

.placeholder-image {
    background: var(--gray-100);
    border-radius: 20px;
    aspect-ratio: 4/3;
    display: flex;
    align-items: center;
    justify-content: center;
    border: 2px dashed var(--gray-200);
}

.placeholder-image p {
    color: var(--gray-400);
    font-size: 15px;
    text-align: center;
}

.process {
    padding: var(--section-padding);
    background: var(--gray-50);
}

.process-steps {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 40px;
}

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

.step-number {
    width: 60px;
    height: 60px;
    background: var(--primary-blue);
    color: var(--white);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
    font-weight: 600;
    margin: 0 auto 24px;
}

.process-step h3 {
    margin-bottom: 12px;
    color: var(--black);
}

.process-step p {
    font-size: 15px;
    color: var(--gray-600);
}

/* ========================================
   PORTFOLIO PAGE
   ======================================== */

.portfolio-filters {
    padding: 40px 0;
    background: var(--white);
    border-bottom: 1px solid var(--gray-200);
}

.filter-buttons {
    display: flex;
    gap: 12px;
    justify-content: center;
    flex-wrap: wrap;
}

.filter-btn {
    padding: 10px 20px;
    border-radius: 980px;
    border: 1px solid var(--gray-200);
    background: var(--white);
    color: var(--gray-600);
    font-size: 15px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.3s ease;
}

.filter-btn:hover {
    border-color: var(--primary-blue);
    color: var(--primary-blue);
}

.filter-btn.active {
    background: var(--primary-blue);
    color: var(--white);
    border-color: var(--primary-blue);
}

.portfolio-gallery {
    padding: var(--section-padding);
    background: var(--gray-50);
}

.portfolio-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
    gap: 32px;
}

.portfolio-item {
    background: var(--white);
    border-radius: 16px;
    overflow: hidden;
    transition: all 0.3s ease;
}

.portfolio-item:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-lg);
}

.portfolio-item.hidden {
    display: none;
}

.portfolio-image .placeholder-image {
    aspect-ratio: 4/3;
    margin: 0;
    border-radius: 0;
}

.portfolio-info {
    padding: 24px;
}

.portfolio-info h3 {
    font-size: 20px;
    margin-bottom: 8px;
    color: var(--black);
}

.portfolio-category {
    font-size: 13px;
    color: var(--primary-blue);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: 12px;
}

.portfolio-specs {
    font-size: 14px;
    color: var(--gray-600);
}

/* ========================================
   CONTACT PAGE
   ======================================== */

.contact-channels {
    padding: 40px 0 60px;
    background: var(--white);
}

.channels-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
    max-width: 900px;
    margin: 0 auto;
}

.channel-card {
    background: var(--white);
    border: 2px solid var(--gray-200);
    border-radius: 16px;
    padding: 32px 24px;
    text-align: center;
    transition: all 0.3s ease;
    text-decoration: none;
    display: block;
}

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

.channel-icon {
    font-size: 48px;
    color: var(--gray-400);
    margin-bottom: 16px;
    transition: color 0.3s ease;
}

.channel-card.whatsapp:hover {
    border-color: #25D366;
}

.channel-card.whatsapp:hover .channel-icon {
    color: #25D366;
}

.channel-card.instagram:hover {
    border-color: #E4405F;
}

.channel-card.instagram:hover .channel-icon {
    color: #E4405F;
}

.channel-card.email:hover {
    border-color: var(--primary-blue);
}

.channel-card.email:hover .channel-icon {
    color: var(--primary-blue);
}

.channel-card h3 {
    color: var(--black);
    font-size: 20px;
    font-weight: 600;
    margin-bottom: 8px;
}

.channel-card p {
    color: var(--gray-600);
    font-size: 15px;
    margin-bottom: 12px;
}

.channel-card .channel-link {
    color: var(--black);
    font-size: 15px;
    font-weight: 500;
    display: block;
}

.contact-info-section {
    padding: 60px 0;
    background: var(--gray-50);
}

.info-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
    max-width: 900px;
    margin: 0 auto;
}

.info-card {
    background: var(--white);
    padding: 32px;
    border-radius: 16px;
    text-align: center;
}

.info-icon {
    font-size: 30px;
    color: var(--primary-blue);
    margin-bottom: 12px;
}

.info-card h3 {
    color: var(--black);
    font-size: 20px;
    font-weight: 600;
    margin-bottom: 12px;
}

.info-card p {
    color: var(--gray-700);
    font-size: 15px;
    line-height: 1.4;
    margin-bottom: 4px;
}

.info-card p strong {
    color: var(--black);
    font-weight: 600;
}

.info-note {
    color: var(--gray-500);
    font-size: 14px;
    margin-top: 12px;
}

.faq-section {
    padding: var(--section-padding);
    background: var(--gray-50);
}

.faq-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 32px;
}

.faq-item {
    background: var(--white);
    padding: 24px;
    border-radius: 12px;
}

.faq-item h3 {
    font-size: 18px;
    margin-bottom: 12px;
    color: var(--black);
}

.faq-item p {
    font-size: 15px;
    color: var(--gray-600);
    line-height: 1.6;
}

/* ========================================
   RESPONSIVE
   ======================================== */

@media (max-width: 768px) {
    .nav-menu {
        display: none;
    }
    
    .mobile-menu-toggle {
        display: flex;
    }
    
    .hero {
        padding: 80px 0 60px;
    }
    
    .hero-cta {
        flex-direction: column;
    }
    
    .features-grid,
    .materials-grid,
    .sectors-grid {
        grid-template-columns: 1fr;
    }
    
    .service-content {
        grid-template-columns: 1fr;
        gap: 40px;
    }
    
    .portfolio-grid {
        grid-template-columns: 1fr;
    }
    
    .channels-grid {
        grid-template-columns: 1fr;
        gap: 16px;
    }
    
    .info-grid {
        grid-template-columns: 1fr;
        gap: 16px;
    }
    
    .faq-grid {
        grid-template-columns: 1fr;
    }
    
    :root {
        --section-padding: 60px 0;
    }
}

@media (max-width: 768px) {
    .nav-menu {
        position: fixed;
        top: 72px;
        left: 0;
        right: 0;
        background: rgba(255, 255, 255, 0.95);
        backdrop-filter: blur(20px);
        flex-direction: column;
        padding: 24px;
        gap: 16px;
        box-shadow: 0 8px 32px rgba(0,0,0,0.12);
        transform: translateY(-100%);
        opacity: 0;
        transition: all 0.3s ease;
        pointer-events: none;
    }
    
    .nav-menu.active {
        display: flex;
        transform: translateY(0);
        opacity: 1;
        pointer-events: all;
    }
    
    .mobile-menu-toggle.active span:nth-child(1) {
        transform: rotate(45deg) translate(5px, 5px);
    }
    
    .mobile-menu-toggle.active span:nth-child(2) {
        opacity: 0;
    }
    
    .mobile-menu-toggle.active span:nth-child(3) {
        transform: rotate(-45deg) translate(5px, -5px);
    }
}