/* ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
   VARIABLES & SETUP
━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ */
:root {
    /* Color Palette */
    --color-bg: #050505;
    --color-surface: #0e0e0e;
    --color-surface-hover: #161616;
    --color-border: rgba(255, 255, 255, 0.08);
    --color-text-main: #f5f5f5;
    --color-text-muted: #a0a0a0;
    --color-accent: #c99b6e; /* Soft Luxury Gold/Bronze */
    --color-accent-hover: #e0b487;
    
    /* Typography */
    --font-heading: 'Space Grotesk', sans-serif;
    --font-body: 'Inter', sans-serif;
    
    /* Spacing & Layout */
    --container-width: 1280px;
    --section-spacing: clamp(5rem, 10vw, 9rem);
    
    /* Animation */
    --transition-fast: 0.3s ease;
    --transition-slow: 0.6s cubic-bezier(0.16, 1, 0.3, 1);
}

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

html {
    scroll-behavior: smooth;
    scrollbar-width: thin;
    scrollbar-color: var(--color-accent) var(--color-bg);
}

body {
    font-family: var(--font-body);
    background-color: var(--color-bg);
    color: var(--color-text-main);
    line-height: 1.6;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
}

/* Custom Scrollbar */
::-webkit-scrollbar {
    width: 6px;
}
::-webkit-scrollbar-track {
    background: var(--color-bg);
}
::-webkit-scrollbar-thumb {
    background: var(--color-accent);
    border-radius: 10px;
}

/* ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
   TYPOGRAPHY & UTILITIES
━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ */
h1, h2, h3, h4, .brand {
    font-family: var(--font-heading);
    font-weight: 500;
    line-height: 1.2;
}

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

ul {
    list-style: none;
}

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

.container {
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 5%;
}

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

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

.section-subtitle {
    display: block;
    color: var(--color-accent);
    text-transform: uppercase;
    letter-spacing: 2px;
    font-size: 0.85rem;
    margin-bottom: 1rem;
    font-weight: 600;
}

.section-title {
    font-size: clamp(2rem, 4vw, 3.5rem);
    margin-bottom: 2rem;
}

.config-highlight {
    color: var(--color-accent);
}

/* Buttons */
.btn {
    display: inline-block;
    padding: 1rem 2rem;
    font-size: 0.95rem;
    font-weight: 500;
    letter-spacing: 0.5px;
    cursor: pointer;
    border-radius: 2px;
    transition: var(--transition-fast);
    text-align: center;
}

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

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

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

.btn-secondary:hover {
    border-color: var(--color-accent);
    color: var(--color-accent);
}

.w-100 {
    width: 100%;
}

/* ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
   GLOBAL COMPONENTS
━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ */

/* Preloader */
#preloader {
    position: fixed;
    inset: 0;
    background-color: var(--color-bg);
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    z-index: 9999;
    transition: opacity 0.8s ease, visibility 0.8s ease;
}

.loader-text {
    font-family: var(--font-heading);
    font-size: 2rem;
    letter-spacing: 4px;
    text-transform: uppercase;
    margin-bottom: 20px;
}

.loader-bar {
    width: 200px;
    height: 1px;
    background: var(--color-border);
    position: relative;
    overflow: hidden;
}

.loader-bar::after {
    content: '';
    position: absolute;
    top: 0; left: 0; height: 100%;
    width: 40%;
    background: var(--color-accent);
    animation: loading 1.5s infinite ease-in-out;
}

@keyframes loading {
    0% { transform: translateX(-100%); }
    100% { transform: translateX(300%); }
}

/* Scroll Progress */
#scroll-progress {
    position: fixed;
    top: 0; left: 0; height: 2px;
    background-color: var(--color-accent);
    width: 0%;
    z-index: 10000;
    transition: width 0.1s;
}

/* Header & Navigation */
header {
    position: fixed;
    top: 0; left: 0; width: 100%;
    padding: 1.5rem 0;
    z-index: 1000;
    transition: background-color 0.4s ease, padding 0.4s ease, border-bottom 0.4s ease;
    border-bottom: 1px solid transparent;
}

header.scrolled {
    background-color: rgba(5, 5, 5, 0.9);
    backdrop-filter: blur(10px);
    padding: 1rem 0;
    border-bottom: 1px solid var(--color-border);
}

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

.brand {
    font-size: 1.5rem;
    font-weight: 700;
    letter-spacing: 2px;
    text-transform: uppercase;
}

.nav-list {
    display: flex;
    gap: 2.5rem;
}

.nav-link {
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--color-text-muted);
    position: relative;
}

.nav-link:hover, .nav-link.active {
    color: var(--color-text-main);
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -5px; left: 0; width: 100%; height: 1px;
    background-color: var(--color-accent);
    transform: scaleX(0);
    transform-origin: right;
    transition: transform 0.4s ease;
}

.nav-link:hover::after, .nav-link.active::after {
    transform: scaleX(1);
    transform-origin: left;
}

.hamburger-menu {
    display: none;
    flex-direction: column;
    gap: 6px;
    cursor: pointer;
    z-index: 1001;
}

.hamburger-menu .bar {
    width: 25px; height: 2px;
    background-color: var(--color-text-main);
    transition: var(--transition-fast);
}

/* ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
   SECTIONS
━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ */

/* Hero */
.hero {
    height: 100vh;
    min-height: 600px;
    position: relative;
    display: flex;
    align-items: center;
    padding-top: 80px;
}

.hero-bg {
    position: absolute;
    inset: 0;
    z-index: -1;
    overflow: hidden;
}

.hero-bg img {
    width: 100%; height: 100%;
    object-fit: cover;
    transform: scale(1.05);
    animation: subtleZoom 20s infinite alternate;
}

@keyframes subtleZoom {
    0% { transform: scale(1.05); }
    100% { transform: scale(1.15); }
}

.hero-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(to right, rgba(5,5,5,0.95) 0%, rgba(5,5,5,0.7) 50%, rgba(5,5,5,0.4) 100%);
}

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

.hero-subtitle {
    color: var(--color-accent);
    text-transform: uppercase;
    letter-spacing: 3px;
    font-size: 0.9rem;
    margin-bottom: 1.5rem;
}

.hero-title {
    font-size: clamp(3rem, 6vw, 5.5rem);
    margin-bottom: 2.5rem;
}

.hero-actions {
    display: flex;
    gap: 1rem;
}

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

.about-image {
    position: relative;
    overflow: hidden;
}

.about-image img {
    width: 100%;
    filter: grayscale(100%);
    transition: var(--transition-slow);
}

.about-image:hover img {
    filter: grayscale(0%);
    transform: scale(1.02);
}

.about-text p {
    color: var(--color-text-muted);
    font-size: 1.1rem;
    margin-bottom: 1.5rem;
}

.stats {
    display: flex;
    gap: 3rem;
    margin-top: 3rem;
    padding-top: 2rem;
    border-top: 1px solid var(--color-border);
}

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

.stat-number {
    font-family: var(--font-heading);
    font-size: 2.5rem;
    color: var(--color-accent);
    line-height: 1;
    margin-bottom: 0.5rem;
}

.stat-label {
    font-size: 0.85rem;
    text-transform: uppercase;
    letter-spacing: 1px;
    color: var(--color-text-muted);
}

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

.service-card {
    padding: 3rem 2rem;
    background-color: var(--color-bg);
    border: 1px solid var(--color-border);
    transition: var(--transition-slow);
}

.service-card:hover {
    transform: translateY(-10px);
    border-color: var(--color-accent);
    background-color: var(--color-surface-hover);
}

.service-icon {
    color: var(--color-accent);
    margin-bottom: 2rem;
}

.service-title {
    font-size: 1.5rem;
    margin-bottom: 1rem;
}

.service-desc {
    color: var(--color-text-muted);
}

/* Portfolio */
.portfolio-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 2rem;
}

.portfolio-item {
    position: relative;
    overflow: hidden;
    cursor: pointer;
}

.portfolio-item:nth-child(even) {
    margin-top: 4rem; /* Masonry effect */
}

.portfolio-image {
    overflow: hidden;
}

.portfolio-image img {
    width: 100%;
    aspect-ratio: 4/5;
    object-fit: cover;
    transition: var(--transition-slow);
    filter: brightness(0.8);
}

.portfolio-item:hover .portfolio-image img {
    transform: scale(1.05);
    filter: brightness(1);
}

.portfolio-info {
    position: absolute;
    bottom: 0; left: 0; width: 100%;
    padding: 2rem;
    background: linear-gradient(transparent, rgba(0,0,0,0.9));
    transform: translateY(20px);
    opacity: 0;
    transition: var(--transition-slow);
}

.portfolio-item:hover .portfolio-info {
    transform: translateY(0);
    opacity: 1;
}

.portfolio-info h3 {
    font-size: 1.5rem;
    margin-bottom: 0.5rem;
}

.portfolio-info p {
    color: var(--color-accent);
    font-size: 0.9rem;
}

/* Contact */
.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
}

.contact-desc {
    color: var(--color-text-muted);
    font-size: 1.1rem;
    margin-bottom: 3rem;
}

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

.detail-item strong {
    display: block;
    color: var(--color-accent);
    font-family: var(--font-heading);
    margin-bottom: 0.5rem;
    letter-spacing: 1px;
}

.hover-link {
    font-size: 1.2rem;
    position: relative;
    display: inline-block;
}

.hover-link::after {
    content: '';
    position: absolute;
    bottom: 0; left: 0; width: 0%; height: 1px;
    background-color: var(--color-text-main);
    transition: var(--transition-fast);
}

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

.contact-form {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.input-group input, .input-group select, .input-group textarea {
    width: 100%;
    padding: 1.2rem;
    background-color: var(--color-bg);
    border: 1px solid var(--color-border);
    color: var(--color-text-main);
    font-family: var(--font-body);
    font-size: 1rem;
    transition: var(--transition-fast);
}

.input-group input:focus, .input-group select:focus, .input-group textarea:focus {
    outline: none;
    border-color: var(--color-accent);
}

/* Footer */
.footer {
    border-top: 1px solid var(--color-border);
    padding: 4rem 0 2rem;
}

.footer-top {
    display: flex;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 3rem;
    margin-bottom: 4rem;
}

.footer-brand h2 {
    font-size: 2rem;
    margin-bottom: 1rem;
}

.footer-brand p {
    color: var(--color-text-muted);
}

.footer-links {
    display: flex;
    gap: 4rem;
}

.link-column h3 {
    font-size: 1rem;
    color: var(--color-accent);
    margin-bottom: 1.5rem;
}

.link-column ul {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.link-column a {
    color: var(--color-text-muted);
    font-size: 0.95rem;
}

.link-column a:hover {
    color: var(--color-text-main);
}

.footer-bottom {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: 2rem;
    border-top: 1px solid var(--color-border);
    color: var(--color-text-muted);
    font-size: 0.85rem;
}

.developer-branding a {
    color: var(--color-accent);
}

/* ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
   ANIMATIONS & FLOATERS
━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ */

/* Reveal Animations */
.reveal {
    opacity: 0;
    transform: translateY(40px);
    transition: opacity 0.8s ease, transform 0.8s cubic-bezier(0.16, 1, 0.3, 1);
}

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

.delay-1 { transition-delay: 0.2s; }
.delay-2 { transition-delay: 0.4s; }

/* WhatsApp Button */
.whatsapp-btn {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    background-color: #25D366;
    color: #fff;
    width: 60px;
    height: 60px;
    border-radius: 50%;
    display: flex;
    justify-content: center;
    align-items: center;
    box-shadow: 0 10px 20px rgba(0,0,0,0.3);
    z-index: 1000;
    transition: transform 0.3s ease;
    animation: float 4s ease-in-out infinite;
}

.whatsapp-btn::before {
    content: '';
    position: absolute;
    inset: 0;
    border-radius: 50%;
    background-color: rgba(37, 211, 102, 0.4);
    z-index: -1;
    animation: pulse 2s infinite;
}

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

/* Back to Top */
.back-to-top {
    position: fixed;
    bottom: 2rem;
    left: 2rem;
    background-color: var(--color-surface);
    color: var(--color-accent);
    border: 1px solid var(--color-accent);
    width: 50px;
    height: 50px;
    border-radius: 50%;
    display: flex;
    justify-content: center;
    align-items: center;
    cursor: pointer;
    z-index: 1000;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition-fast);
}

.back-to-top.visible {
    opacity: 1;
    visibility: visible;
}

.back-to-top:hover {
    background-color: var(--color-accent);
    color: var(--color-bg);
}

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

@keyframes pulse {
    0% { transform: scale(1); opacity: 1; }
    100% { transform: scale(1.5); opacity: 0; }
}

/* ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
   RESPONSIVE DESIGN
━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ */
@media (max-width: 1024px) {
    .about-grid, .contact-grid {
        grid-template-columns: 1fr;
    }
    
    .portfolio-item:nth-child(even) {
        margin-top: 0;
    }
}

@media (max-width: 768px) {
    .hamburger-menu {
        display: flex;
    }

    .nav-menu {
        position: fixed;
        top: 0; right: -100%;
        width: 100%; height: 100vh;
        background-color: rgba(5,5,5,0.98);
        display: flex;
        justify-content: center;
        align-items: center;
        transition: right 0.4s ease;
    }

    .nav-menu.active {
        right: 0;
    }

    .nav-list {
        flex-direction: column;
        align-items: center;
        gap: 2rem;
    }

    .nav-link {
        font-size: 1.5rem;
    }

    .hamburger-menu.active .bar:nth-child(1) {
        transform: translateY(8px) rotate(45deg);
    }

    .hamburger-menu.active .bar:nth-child(2) {
        transform: translateY(-8px) rotate(-45deg);
    }

    .hero-actions {
        flex-direction: column;
    }

    .stats {
        flex-direction: column;
        gap: 1.5rem;
    }

    .portfolio-grid {
        grid-template-columns: 1fr;
    }

    .footer-bottom {
        flex-direction: column;
        gap: 1rem;
        text-align: center;
    }
}