/* ========================================
   DF CODE - PROFESSIONAL WEBSITE STYLES
   Created: 2026
   ======================================== */

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

:root {
    /* Colors - Pure Grayscale Professional */
    --primary: #000000;
    --primary-dark: #0A0A0A;
    --primary-light: #1A1A1A;
    --secondary: #FFFFFF;
    --accent: #3A3A3A;
    --success: #2D2D2D;
    --warning: #4A4A4A;
    --danger: #1A1A1A;
    
    /* Grays - Professional Palette */
    --gray-50: #FAFAFA;
    --gray-100: #F4F4F5;
    --gray-200: #E4E4E7;
    --gray-300: #D4D4D8;
    --gray-400: #A1A1AA;
    --gray-500: #71717A;
    --gray-600: #52525B;
    --gray-700: #3F3F46;
    --gray-800: #27272A;
    --gray-900: #18181B;
    
    /* Typography */
    --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    
    /* Spacing */
    --container-width: 1200px;
    --section-padding: 80px 0;
    --section-padding-mobile: 60px 0;
    
    /* Effects */
    --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;
    --transition-base: 250ms ease;
    --transition-slow: 350ms ease;
    
    /* Border Radius */
    --radius-sm: 6px;
    --radius-md: 10px;
    --radius-lg: 16px;
    --radius-xl: 24px;
    --radius-full: 9999px;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-primary);
    font-size: 16px;
    line-height: 1.6;
    color: var(--gray-900);
    background: #FFFFFF;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* ============ UTILITIES ============ */
.container {
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 24px;
}

.gradient-text {
    color: var(--primary);
    font-weight: 900;
}

/* ============ BUTTONS ============ */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 14px 28px;
    font-size: 16px;
    font-weight: 600;
    text-decoration: none;
    border-radius: var(--radius-full);
    border: none;
    cursor: pointer;
    transition: all var(--transition-base);
    white-space: nowrap;
}

.btn-primary {
    background: var(--primary);
    color: white;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.2);
}

.btn-primary:hover {
    background: var(--accent);
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.3);
}

.btn-secondary {
    background: white;
    color: var(--gray-900);
    border: 2px solid var(--gray-200);
}

.btn-secondary:hover {
    border-color: var(--gray-900);
    background: var(--gray-50);
    transform: translateY(-2px);
}

.btn-large {
    padding: 18px 36px;
    font-size: 18px;
}

.btn svg {
    width: 20px;
    height: 20px;
}

/* ============ WHATSAPP FLOATING BUTTON ============ */
.whatsapp-float {
    position: fixed;
    bottom: 24px;
    right: 24px;
    z-index: 1000;
    transition: all var(--transition-base);
    animation: float 3s ease-in-out infinite;
    filter: drop-shadow(0 4px 20px rgba(37, 211, 102, 0.4));
}

.whatsapp-float:hover {
    transform: scale(1.1);
}

@keyframes float {
    0%, 100% { transform: translateY(0px); }
    50% { transform: translateY(-10px); }
}

/* ============ NAVIGATION ============ */
.navbar {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--gray-200);
    position: sticky;
    top: 0;
    z-index: 999;
    transition: all var(--transition-base);
}

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

.nav-wrapper {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 16px 0;
}

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

.logo-img {
    height: 60px;
    width: auto;
    transition: transform var(--transition-base);
    filter: brightness(0.95);
}

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

.nav-menu {
    display: flex;
    list-style: none;
    gap: 32px;
    align-items: center;
}

.nav-menu a {
    text-decoration: none;
    color: var(--gray-700);
    font-weight: 500;
    transition: color var(--transition-fast);
    position: relative;
}

.nav-menu a:hover,
.nav-menu a.active {
    color: var(--gray-900);
}

.nav-menu a::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--gray-900);
    transition: width var(--transition-base);
}

.nav-menu a:hover::after,
.nav-menu a.active::after {
    width: 100%;
}

.btn-nav {
    padding: 10px 24px !important;
    background: var(--gray-900) !important;
    color: white !important;
    border-radius: var(--radius-full) !important;
}

.btn-nav::after {
    display: none !important;
}

.btn-nav:hover {
    background: var(--gray-800) !important;
    transform: translateY(-2px);
}

.mobile-menu-toggle {
    display: none;
    flex-direction: column;
    gap: 6px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 8px;
}

.mobile-menu-toggle span {
    width: 28px;
    height: 3px;
    background: var(--gray-700);
    border-radius: 2px;
    transition: all var(--transition-base);
}

.mobile-menu-toggle.active span:nth-child(1) {
    transform: rotate(45deg) translate(8px, 8px);
}

.mobile-menu-toggle.active span:nth-child(2) {
    opacity: 0;
}

.mobile-menu-toggle.active span:nth-child(3) {
    transform: rotate(-45deg) translate(7px, -7px);
}

/* ============ HERO SECTION ============ */
.hero {
    padding: 120px 0 100px;
    background: linear-gradient(180deg, #FFFFFF 0%, #FAFAFA 100%);
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -20%;
    width: 800px;
    height: 800px;
    background: radial-gradient(circle, rgba(0, 0, 0, 0.02) 0%, transparent 70%);
    border-radius: 50%;
}

.hero-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
    position: relative;
    z-index: 1;
}

.hero-badge {
    display: inline-block;
    padding: 10px 20px;
    background: var(--gray-900);
    color: white;
    font-size: 13px;
    font-weight: 600;
    letter-spacing: 0.5px;
    border-radius: var(--radius-full);
    margin-bottom: 24px;
    text-transform: uppercase;
}

.hero-title {
    font-size: 56px;
    font-weight: 800;
    line-height: 1.1;
    color: var(--gray-900);
    margin-bottom: 24px;
    letter-spacing: -0.02em;
}

.hero-description {
    font-size: 20px;
    line-height: 1.6;
    color: var(--gray-600);
    margin-bottom: 32px;
}

.hero-description strong {
    color: var(--gray-900);
}

.hero-buttons {
    display: flex;
    gap: 16px;
    margin-bottom: 48px;
    flex-wrap: wrap;
}

.social-proof {
    display: flex;
    gap: 40px;
    padding-top: 32px;
    border-top: 1px solid var(--gray-200);
}

.proof-item {
    display: flex;
    flex-direction: column;
}

.proof-number {
    font-size: 32px;
    font-weight: 800;
    color: var(--primary);
    line-height: 1;
}

.proof-label {
    font-size: 14px;
    color: var(--gray-600);
    margin-top: 4px;
}

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

.hero-card {
    position: absolute;
    background: white;
    border-radius: var(--radius-lg);
    padding: 20px 24px;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.1);
    display: flex;
    gap: 16px;
    align-items: center;
    animation: floatCard 4s ease-in-out infinite;
    border: 1px solid var(--gray-200);
    max-width: 280px;
}

.hero-card.card-1 {
    top: 5%;
    left: 5%;
    animation-delay: 0s;
}

.hero-card.card-2 {
    top: 45%;
    right: 5%;
    animation-delay: 1s;
}

.hero-card.card-3 {
    bottom: 10%;
    left: 15%;
    animation-delay: 2s;
}

.card-icon {
    font-size: 40px;
}

.card-content h3 {
    font-size: 18px;
    font-weight: 700;
    color: var(--gray-900);
    margin-bottom: 4px;
}

.card-content p {
    font-size: 14px;
    color: var(--gray-600);
}

@keyframes floatCard {
    0%, 100% { transform: translateY(0px); }
    50% { transform: translateY(-15px); }
}

/* ============ SECTIONS ============ */
section {
    padding: var(--section-padding);
}

.section-header {
    text-align: center;
    max-width: 800px;
    margin: 0 auto 60px;
}

.section-badge {
    display: inline-block;
    padding: 8px 18px;
    background: var(--gray-900);
    color: white;
    font-size: 12px;
    font-weight: 600;
    letter-spacing: 0.8px;
    border-radius: var(--radius-full);
    margin-bottom: 16px;
    text-transform: uppercase;
}

.section-title {
    font-size: 42px;
    font-weight: 800;
    color: var(--gray-900);
    margin-bottom: 16px;
    letter-spacing: -0.02em;
}

.section-description {
    font-size: 18px;
    color: var(--gray-600);
    line-height: 1.6;
}

/* ============ SERVICES ============ */
.services {
    background: white;
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 30px;
}

.service-card {
    background: white;
    border: 2px solid var(--gray-100);
    border-radius: var(--radius-lg);
    padding: 32px;
    transition: all var(--transition-base);
    position: relative;
}

.service-card:hover {
    border-color: var(--gray-900);
    transform: translateY(-8px);
    box-shadow: var(--shadow-xl);
}

.service-card.featured {
    border-color: var(--gray-900);
    background: var(--gray-50);
}

.featured-badge {
    position: absolute;
    top: -12px;
    right: 32px;
    background: var(--gray-900);
    color: white;
    padding: 6px 16px;
    border-radius: var(--radius-full);
    font-size: 12px;
    font-weight: 700;
}

.service-icon {
    width: 64px;
    height: 64px;
    background: var(--gray-50);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 24px;
    transition: all var(--transition-base);
}

.service-card:hover .service-icon {
    background: var(--gray-900);
}

.service-card:hover .service-icon svg {
    stroke: white;
}

.service-icon svg {
    stroke: var(--gray-900);
    transition: stroke var(--transition-base);
}

.service-title {
    font-size: 24px;
    font-weight: 700;
    color: var(--gray-900);
    margin-bottom: 12px;
}

.service-description {
    font-size: 15px;
    color: var(--gray-600);
    line-height: 1.6;
    margin-bottom: 20px;
}

.service-features {
    list-style: none;
    margin-bottom: 24px;
}

.service-features li {
    font-size: 14px;
    color: var(--gray-700);
    padding: 8px 0;
    border-bottom: 1px solid var(--gray-100);
}

.service-features li:last-child {
    border-bottom: none;
}

.service-price {
    font-size: 28px;
    font-weight: 800;
    color: var(--gray-900);
    margin-bottom: 16px;
}

.service-link {
    color: var(--gray-900);
    text-decoration: none;
    font-weight: 600;
    font-size: 15px;
    transition: all var(--transition-fast);
}

.service-link:hover {
    gap: 8px;
    color: var(--gray-700);
}

/* ============ WHY US ============ */
.why-us {
    background: var(--gray-50);
}

.why-us-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 80px;
    align-items: center;
}

.why-features {
    display: flex;
    flex-direction: column;
    gap: 24px;
    margin-top: 32px;
}

.why-feature {
    display: flex;
    gap: 20px;
    align-items: flex-start;
}

.why-icon {
    font-size: 32px;
    flex-shrink: 0;
}

.why-content h4 {
    font-size: 18px;
    font-weight: 700;
    color: var(--gray-900);
    margin-bottom: 8px;
}

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

.why-us-image {
    position: relative;
}

.image-card {
    border-radius: var(--radius-xl);
    overflow: hidden;
    box-shadow: var(--shadow-2xl);
}

.image-card img {
    width: 100%;
    height: auto;
    display: block;
    transition: transform var(--transition-slow);
}

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

/* ============ PORTFOLIO ============ */
.portfolio-preview {
    background: white;
}

.portfolio-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(340px, 1fr));
    gap: 32px;
    margin-bottom: 48px;
}

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

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

.portfolio-image {
    position: relative;
    overflow: hidden;
    height: 240px;
}

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

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

.portfolio-overlay {
    position: absolute;
    top: 16px;
    left: 16px;
}

.portfolio-tag {
    background: var(--gray-900);
    color: white;
    padding: 6px 14px;
    border-radius: var(--radius-full);
    font-size: 12px;
    font-weight: 600;
}

.portfolio-content {
    padding: 24px;
}

.portfolio-content h3 {
    font-size: 20px;
    font-weight: 700;
    color: var(--gray-900);
    margin-bottom: 12px;
}

.portfolio-content p {
    font-size: 15px;
    color: var(--gray-600);
    line-height: 1.6;
    margin-bottom: 16px;
}

.portfolio-link {
    color: var(--gray-900);
    text-decoration: none;
    font-weight: 600;
    font-size: 15px;
    transition: all var(--transition-fast);
}

.portfolio-link:hover {
    gap: 8px;
    color: var(--gray-700);
}

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

/* ============ CTA SECTION ============ */
.cta-section {
    background: linear-gradient(135deg, var(--gray-900) 0%, var(--gray-800) 100%);
    color: white;
    text-align: center;
}

.cta-content h2 {
    font-size: 42px;
    font-weight: 800;
    margin-bottom: 16px;
    letter-spacing: -0.02em;
}

.cta-content p {
    font-size: 20px;
    margin-bottom: 32px;
    opacity: 0.95;
}

.cta-note {
    font-size: 14px;
    margin-top: 16px;
    opacity: 0.85;
}

/* ============ FOOTER ============ */
.footer {
    background: var(--gray-900);
    color: white;
    padding: 60px 0 24px;
}

.footer-content {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1.5fr;
    gap: 48px;
    margin-bottom: 48px;
}

.footer-logo {
    height: 50px;
    width: auto;
    margin-bottom: 16px;
}

.footer-description {
    font-size: 14px;
    color: var(--gray-400);
    line-height: 1.6;
    margin-bottom: 20px;
}

.footer-social {
    display: flex;
    gap: 12px;
}

.footer-social a {
    width: 40px;
    height: 40px;
    background: var(--gray-800);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    transition: all var(--transition-base);
}

.footer-social a:hover {
    background: var(--gray-700);
    transform: translateY(-3px);
}

.footer-col h4 {
    font-size: 16px;
    font-weight: 700;
    margin-bottom: 20px;
}

.footer-col ul {
    list-style: none;
}

.footer-col ul li {
    margin-bottom: 12px;
}

.footer-col ul li a {
    color: var(--gray-400);
    text-decoration: none;
    font-size: 14px;
    transition: color var(--transition-fast);
}

.footer-col ul li a:hover {
    color: white;
}

.footer-contact li {
    display: flex;
    align-items: center;
    gap: 10px;
}

.footer-contact svg {
    flex-shrink: 0;
}

.footer-bottom {
    padding-top: 32px;
    border-top: 1px solid var(--gray-800);
    text-align: center;
    color: var(--gray-500);
    font-size: 14px;
}

.footer-made {
    margin-top: 8px;
}

/* ============ RESPONSIVE ============ */
@media (max-width: 968px) {
    .hero-content,
    .why-us-content {
        grid-template-columns: 1fr;
        gap: 40px;
    }
    
    .hero-title {
        font-size: 42px;
    }
    
    .section-title {
        font-size: 36px;
    }
    
    .hero-image {
        height: 400px;
    }
    
    .footer-content {
        grid-template-columns: 1fr 1fr;
    }
}

@media (max-width: 768px) {
    section {
        padding: var(--section-padding-mobile);
    }
    
    .nav-menu {
        position: fixed;
        top: 83px;
        left: 0;
        right: 0;
        background: white;
        flex-direction: column;
        padding: 24px;
        gap: 16px;
        box-shadow: var(--shadow-lg);
        transform: translateX(-100%);
        transition: transform var(--transition-base);
    }
    
    .nav-menu.active {
        transform: translateX(0);
    }
    
    .mobile-menu-toggle {
        display: flex;
    }
    
    .hero {
        padding: 60px 0 40px;
    }
    
    .hero-title {
        font-size: 36px;
    }
    
    .hero-description {
        font-size: 18px;
    }
    
    .hero-buttons {
        flex-direction: column;
    }
    
    .btn {
        width: 100%;
        justify-content: center;
    }
    
    .social-proof {
        flex-wrap: wrap;
        gap: 24px;
    }
    
    .services-grid {
        grid-template-columns: 1fr;
    }
    
    .section-title {
        font-size: 32px;
    }
    
    .cta-content h2 {
        font-size: 32px;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        gap: 32px;
    }
    
    .portfolio-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 480px) {
    .hero-title {
        font-size: 28px;
    }
    
    .section-title {
        font-size: 28px;
    }
    
    .cta-content h2 {
        font-size: 28px;
    }
    
    .hero-image {
        display: none;
    }
}

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

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

/* ============ ACCESSIBILITY ============ */
:focus-visible {
    outline: 2px solid var(--gray-900);
    outline-offset: 2px;
}

.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;
}