/* ===================================
   DESIGN TOKENS - Nathan Batista Site
   Style: Editorial Premium
   =================================== */

:root {
    /* Colors - Backgrounds */
    --color-bg: #FFFFFF;
    --color-bg-alt: #F8F8F8;
    --color-bg-dark: #1A1A1A;

    /* Colors - Text */
    --color-text: #1A1A1A;
    --color-text-muted: #666666;
    --color-text-light: #FFFFFF;

    /* Colors - Accent (Dourado Premium) */
    --color-accent: #C9A961;
    --color-accent-hover: #B09250;
    --color-accent-light: #E5D4A1;

    /* Colors - Borders */
    --color-border: #E5E5E5;
    --color-border-dark: #CCCCCC;

    /* Typography */
    --font-display: 'Playfair Display', serif;
    --font-body: 'Source Sans 3', sans-serif;

    /* Font Sizes */
    --text-xs: 0.875rem;
    --text-sm: 0.9375rem;
    --text-base: 1rem;
    --text-lg: 1.125rem;
    --text-xl: 1.25rem;
    --text-2xl: 1.5rem;
    --text-3xl: 1.875rem;
    --text-4xl: 2.25rem;
    --text-5xl: 3rem;
    --text-6xl: 3.75rem;

    /* Spacing */
    --space-1: 0.25rem;
    --space-2: 0.5rem;
    --space-3: 0.75rem;
    --space-4: 1rem;
    --space-5: 1.25rem;
    --space-6: 1.5rem;
    --space-8: 2rem;
    --space-10: 2.5rem;
    --space-12: 3rem;
    --space-16: 4rem;
    --space-20: 5rem;
    --space-24: 6rem;

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

    /* Shadows */
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.07);
    --shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.1);
    --shadow-xl: 0 20px 25px rgba(0, 0, 0, 0.15);

    /* Border Radius */
    --radius-sm: 2px;
    --radius-md: 4px;
    --radius-lg: 8px;
    --radius-xl: 12px;

    /* Container */
    --container-max: 1200px;
    --container-narrow: 800px;
}

/* ===================================
   CSS RESET
   =================================== */

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

html {
    font-size: 16px;
    scroll-behavior: smooth;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

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

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

a {
    color: inherit;
    text-decoration: none;
}

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

ul, ol {
    list-style: none;
}

h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-display);
    font-weight: 600;
    line-height: 1.2;
}

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

.container {
    width: 100%;
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 var(--space-6);
}

.container-narrow {
    max-width: var(--container-narrow);
}

.text-center { text-align: center; }
.text-accent { color: var(--color-accent); }

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

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

.header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    background-color: var(--color-bg);
    border-bottom: 1px solid var(--color-border);
    z-index: 1000;
    transition: box-shadow var(--transition-base);
}

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

.nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--space-4) 0;
}

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

.logo {
    height: 48px;
    width: auto;
    transition: transform var(--transition-fast);
}

.nav-logo:hover .logo {
    transform: scale(1.02);
}

.nav-menu {
    display: flex;
    align-items: center;
    gap: var(--space-8);
}

.nav-link {
    font-size: var(--text-sm);
    font-weight: 400;
    color: var(--color-text);
    transition: color var(--transition-fast);
    position: relative;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 1px;
    background-color: var(--color-accent);
    transition: width var(--transition-base);
}

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

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

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

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

.nav-item-cta .btn {
    padding: var(--space-2) var(--space-6);
    font-size: var(--text-sm);
    font-weight: 600;
}

/* Mobile Navigation */
.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    padding: var(--space-2);
}

.hamburger {
    width: 24px;
    height: 2px;
    background-color: var(--color-text);
    transition: all var(--transition-fast);
}

/* Mobile breakpoint */
@media (max-width: 768px) {
    .nav-toggle {
        display: flex;
    }

    .nav-menu {
        position: fixed;
        top: 80px;
        left: 0;
        width: 100%;
        background-color: var(--color-bg);
        flex-direction: column;
        padding: var(--space-6);
        border-bottom: 1px solid var(--color-border);
        transform: translateY(-100%);
        opacity: 0;
        visibility: hidden;
        transition: all var(--transition-base);
    }

    .nav-menu.active {
        transform: translateY(0);
        opacity: 1;
        visibility: visible;
    }

    .nav-item {
        width: 100%;
    }

    .nav-link {
        display: block;
        padding: var(--space-3) 0;
    }

    .nav-item-cta {
        margin-top: var(--space-4);
    }

    .nav-item-cta .btn {
        width: 100%;
        text-align: center;
    }
}

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

.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding-top: var(--space-20);
    background: linear-gradient(180deg,
        rgba(201, 169, 97, 0.05) 0%,
        var(--color-bg) 40%
    );
}

.hero-content {
    max-width: var(--container-narrow);
    margin: 0 auto;
    text-align: center;
}

.hero-logo {
    height: 80px;
    width: auto;
    margin: 0 auto var(--space-8);
}

.hero-title {
    font-size: clamp(var(--text-4xl), 5vw, var(--text-6xl));
    font-weight: 600;
    color: var(--color-text);
    margin-bottom: var(--space-6);
    line-height: 1.1;
}

.hero-subtitle {
    font-size: clamp(var(--text-lg), 2vw, var(--text-xl));
    color: var(--color-text-muted);
    max-width: 600px;
    margin: 0 auto var(--space-10);
    line-height: 1.7;
}

.hero-cta {
    display: flex;
    gap: var(--space-4);
    justify-content: center;
    flex-wrap: wrap;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: var(--space-4) var(--space-8);
    font-size: var(--text-base);
    font-weight: 600;
    text-align: center;
    border-radius: var(--radius-md);
    transition: all var(--transition-base);
}

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

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

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

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

/* Scroll Indicator */
.scroll-indicator {
    position: absolute;
    bottom: var(--space-10);
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-2);
    font-size: var(--text-xs);
    color: var(--color-text-muted);
}

.scroll-arrow {
    width: 20px;
    height: 20px;
    border-right: 1px solid var(--color-accent);
    border-bottom: 1px solid var(--color-accent);
    transform: rotate(45deg);
    animation: bounce 2s infinite;
}

@keyframes bounce {
    0%, 20%, 50%, 80%, 100% {
        transform: rotate(45deg) translateY(0);
    }
    40% {
        transform: rotate(45deg) translateY(8px);
    }
    60% {
        transform: rotate(45deg) translateY(4px);
    }
}

/* Mobile adjustments */
@media (max-width: 768px) {
    .hero {
        padding-top: var(--space-24);
    }

    .hero-cta {
        flex-direction: column;
        align-items: center;
    }

    .btn {
        width: 100%;
        max-width: 280px;
    }

    .scroll-indicator {
        display: none;
    }
}

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

.services {
    padding: var(--space-24) 0;
    background-color: var(--color-bg-alt);
}

.section-header {
    margin-bottom: var(--space-16);
}

.section-title {
    font-size: clamp(var(--text-3xl), 4vw, var(--text-5xl));
    color: var(--color-text);
    margin-bottom: var(--space-4);
}

.section-subtitle {
    font-size: var(--text-lg);
    color: var(--color-text-muted);
    max-width: 500px;
    margin: 0 auto;
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-8);
}

.service-card {
    background-color: var(--color-bg);
    padding: var(--space-8);
    border-radius: var(--radius-lg);
    border: 1px solid var(--color-border);
    transition: all var(--transition-base);
}

.service-card:hover {
    border-color: var(--color-accent);
    box-shadow: var(--shadow-lg);
    transform: translateY(-4px);
}

.service-icon {
    margin-bottom: var(--space-6);
}

.service-title {
    font-size: var(--text-xl);
    color: var(--color-text);
    margin-bottom: var(--space-3);
}

.service-description {
    font-size: var(--text-base);
    color: var(--color-text-muted);
    line-height: 1.7;
}

/* Mobile */
@media (max-width: 900px) {
    .services-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 600px) {
    .services-grid {
        grid-template-columns: 1fr;
    }

    .service-card {
        padding: var(--space-6);
    }
}

/* ===================================
   PORTFOLIO SECTION
   =================================== */

.portfolio {
    padding: var(--space-24) 0;
    background-color: var(--color-bg);
}

.portfolio-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-6);
}

.portfolio-item {
    border-radius: var(--radius-lg);
    overflow: hidden;
    position: relative;
}

.portfolio-image {
    position: relative;
    aspect-ratio: 16 / 10;
    overflow: hidden;
    background-color: var(--color-bg-alt);
}

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

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

.portfolio-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(
        to bottom,
        transparent 0%,
        rgba(0, 0, 0, 0.8) 100%
    );
    display: flex;
    flex-direction: column;
    justify-content: flex-end;
    padding: var(--space-6);
    opacity: 0;
    transition: opacity var(--transition-base);
}

.portfolio-item:hover .portfolio-overlay {
    opacity: 1;
}

.portfolio-title {
    font-family: var(--font-display);
    font-size: var(--text-2xl);
    color: var(--color-text-light);
    margin-bottom: var(--space-1);
}

.portfolio-category {
    font-size: var(--text-sm);
    color: var(--color-accent-light);
}

/* Mobile */
@media (max-width: 768px) {
    .portfolio-grid {
        grid-template-columns: 1fr;
    }
}

/* ===================================
   TESTIMONIALS SECTION
   =================================== */

.testimonials {
    padding: var(--space-24) 0;
    background-color: var(--color-bg-alt);
}

.testimonials-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-8);
}

.testimonial-card {
    background-color: var(--color-bg);
    padding: var(--space-8);
    border-radius: var(--radius-lg);
    border: 1px solid var(--color-border);
}

.testimonial-text {
    font-family: var(--font-display);
    font-size: var(--text-lg);
    font-style: italic;
    color: var(--color-text);
    line-height: 1.8;
    margin-bottom: var(--space-6);
}

.testimonial-author {
    display: flex;
    align-items: center;
    gap: var(--space-4);
}

.author-avatar {
    width: 48px;
    height: 48px;
    border-radius: 50%;
}

.author-info {
    display: flex;
    flex-direction: column;
}

.author-name {
    font-weight: 600;
    color: var(--color-text);
    font-style: normal;
}

.author-role {
    font-size: var(--text-sm);
    color: var(--color-text-muted);
}

/* Mobile */
@media (max-width: 900px) {
    .testimonials-grid {
        grid-template-columns: 1fr;
    }
}

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

.about {
    padding: var(--space-24) 0;
    background-color: var(--color-bg);
}

.about-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-16);
    align-items: center;
}

.about-image img {
    width: 100%;
    height: auto;
    border-radius: var(--radius-lg);
}

.about-subtitle {
    font-size: var(--text-lg);
    color: var(--color-accent);
    margin-bottom: var(--space-6);
}

.about-description {
    font-size: var(--text-base);
    color: var(--color-text-muted);
    line-height: 1.8;
    margin-bottom: var(--space-8);
}

.about-stats {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-6);
    margin-bottom: var(--space-8);
}

.stat {
    display: flex;
    flex-direction: column;
}

.stat-number {
    font-family: var(--font-display);
    font-size: var(--text-4xl);
    font-weight: 700;
    color: var(--color-accent);
}

.stat-label {
    font-size: var(--text-sm);
    color: var(--color-text-muted);
}

/* Mobile */
@media (max-width: 900px) {
    .about-content {
        grid-template-columns: 1fr;
    }

    .about-stats {
        grid-template-columns: 1fr;
        text-align: center;
    }
}

/* ===================================
   BLOG SECTION
   =================================== */

.blog {
    padding: var(--space-24) 0;
    background-color: var(--color-bg-alt);
}

.blog-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-8);
}

.blog-card {
    background-color: var(--color-bg);
    border-radius: var(--radius-lg);
    overflow: hidden;
    border: 1px solid var(--color-border);
    transition: all var(--transition-base);
}

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

.blog-image {
    aspect-ratio: 16 / 9;
    overflow: hidden;
}

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

.blog-content {
    padding: var(--space-6);
}

.blog-title {
    font-size: var(--text-xl);
    color: var(--color-text);
    margin-bottom: var(--space-3);
}

.blog-excerpt {
    font-size: var(--text-base);
    color: var(--color-text-muted);
    line-height: 1.7;
    margin-bottom: var(--space-4);
}

.blog-link {
    font-size: var(--text-sm);
    font-weight: 600;
    color: var(--color-accent);
}

.blog-link:hover {
    text-decoration: underline;
}

/* Mobile */
@media (max-width: 900px) {
    .blog-grid {
        grid-template-columns: 1fr;
    }
}

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

.footer {
    padding: var(--space-20) 0 var(--space-8);
    background-color: var(--color-bg-dark);
    color: var(--color-text-light);
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: var(--space-12);
    margin-bottom: var(--space-12);
}

.footer-logo {
    height: 56px;
    width: auto;
    margin-bottom: var(--space-4);
}

.footer-tagline {
    font-size: var(--text-sm);
    color: rgba(255, 255, 255, 0.7);
}

.footer-title {
    font-family: var(--font-body);
    font-size: var(--text-sm);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--color-accent-light);
    margin-bottom: var(--space-4);
}

.footer-links {
    display: flex;
    flex-direction: column;
    gap: var(--space-3);
}

.footer-links a {
    font-size: var(--text-base);
    color: rgba(255, 255, 255, 0.8);
    transition: color var(--transition-fast);
}

.footer-links a:hover {
    color: var(--color-accent);
}

.footer-links li {
    font-size: var(--text-base);
    color: rgba(255, 255, 255, 0.8);
}

.footer-contact li {
    display: flex;
    align-items: center;
    gap: var(--space-3);
}

.footer-contact a {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    color: rgba(255, 255, 255, 0.8);
}

.footer-bottom {
    padding-top: var(--space-8);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    text-align: center;
}

.footer-bottom p {
    font-size: var(--text-sm);
    color: rgba(255, 255, 255, 0.5);
}

/* Mobile */
@media (max-width: 768px) {
    .footer-grid {
        grid-template-columns: 1fr;
        gap: var(--space-8);
    }
}

/* ===================================
   WHATSAPP FLOATING BUTTON
   =================================== */

.whatsapp-float {
    position: fixed;
    bottom: var(--space-6);
    right: var(--space-6);
    width: 60px;
    height: 60px;
    background-color: #25D366;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    box-shadow: var(--shadow-xl);
    z-index: 999;
    transition: all var(--transition-base);
    animation: pulse 2s infinite;
}

.whatsapp-float:hover {
    background-color: #20BA5A;
    transform: scale(1.1);
}

@keyframes pulse {
    0% {
        box-shadow: 0 0 0 0 rgba(37, 211, 102, 0.7);
    }
    70% {
        box-shadow: 0 0 0 12px rgba(37, 211, 102, 0);
    }
    100% {
        box-shadow: 0 0 0 0 rgba(37, 211, 102, 0);
    }
}

/* Mobile */
@media (max-width: 768px) {
    .whatsapp-float {
        bottom: var(--space-4);
        right: var(--space-4);
        width: 52px;
        height: 52px;
    }
}