/* ===== CSS Variables ===== */
:root {
    --color-primary: #c9a227;
    --color-primary-dark: #a68520;
    --color-black: #1a1a1a;
    --color-dark: #2d2d2d;
    --color-gray: #666666;
    --color-light-gray: #f5f5f5;
    --color-white: #ffffff;
    --color-whatsapp: #25d366;

    --font-main: 'Montserrat', sans-serif;

    --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.1);
    --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.15);
    --shadow-lg: 0 8px 24px rgba(0, 0, 0, 0.2);

    --transition: all 0.3s ease;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-main);
    font-size: 16px;
    line-height: 1.6;
    color: var(--color-dark);
    background-color: var(--color-white);
}

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

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

ul {
    list-style: none;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* ===== Typography ===== */
h1, h2, h3, h4 {
    font-weight: 600;
    line-height: 1.2;
}

.section-title {
    font-size: 2.5rem;
    text-align: center;
    margin-bottom: 0.5rem;
}

.section-subtitle {
    text-align: center;
    color: var(--color-gray);
    margin-bottom: 3rem;
}

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

/* ===== Buttons ===== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 14px 32px;
    font-family: var(--font-main);
    font-size: 1rem;
    font-weight: 500;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    transition: var(--transition);
}

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

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

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

.btn-secondary:hover {
    background: var(--color-white);
    color: var(--color-black);
}

.btn-whatsapp {
    background: var(--color-whatsapp);
    color: var(--color-white);
    padding: 16px 32px;
    font-size: 1rem;
    margin-top: 1.5rem;
}

.btn-whatsapp:hover {
    background: #20ba5a;
    transform: translateY(-2px);
}

.btn-whatsapp svg {
    width: 24px;
    height: 24px;
}

.btn-full {
    width: 100%;
}

/* ===== Header ===== */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(255, 255, 255, 0.98);
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
}

.header .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 80px;
}

.logo img {
    height: 60px;
    width: auto;
}

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

.nav-list a {
    font-weight: 500;
    color: var(--color-dark);
    transition: var(--transition);
}

.nav-list a:hover {
    color: var(--color-primary);
}

.btn-nav {
    background: var(--color-primary);
    color: var(--color-black) !important;
    padding: 10px 24px;
    border-radius: 4px;
}

.btn-nav:hover {
    background: var(--color-primary-dark);
}

.btn-nav-highlight {
    background: linear-gradient(135deg, #ff6b35 0%, #f7931e 100%);
    color: var(--color-white) !important;
    padding: 10px 24px;
    border-radius: 4px;
    font-weight: 600;
    animation: pulse-highlight 2s infinite;
}

.btn-nav-highlight:hover {
    background: linear-gradient(135deg, #e55a2b 0%, #e0841a 100%);
    transform: scale(1.05);
}

@keyframes pulse-highlight {
    0%, 100% { box-shadow: 0 0 0 0 rgba(255, 107, 53, 0.4); }
    50% { box-shadow: 0 0 0 8px rgba(255, 107, 53, 0); }
}

.mobile-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 5px;
}

.mobile-toggle span {
    width: 25px;
    height: 3px;
    background: var(--color-dark);
    border-radius: 2px;
    transition: var(--transition);
}

/* ===== Hero ===== */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    background: linear-gradient(135deg, var(--color-black) 0%, var(--color-dark) 100%);
    overflow: hidden;
}

.hero-bg {
    position: absolute;
    inset: 0;
    background: url('assets/images/obra-08.jpeg') center/cover;
    opacity: 0.15;
}

.hero-content {
    position: relative;
    z-index: 1;
    text-align: center;
    color: var(--color-white);
    padding-top: 80px;
}

.hero h1 {
    font-size: 3.5rem;
    max-width: 800px;
    margin: 0 auto 1.5rem;
}

.hero p {
    font-size: 1.25rem;
    color: rgba(255, 255, 255, 0.8);
    max-width: 600px;
    margin: 0 auto 2rem;
}

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

/* ===== Services ===== */
.services {
    padding: 100px 0;
    background: var(--color-light-gray);
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 2rem;
}

.service-card {
    background: var(--color-white);
    padding: 2.5rem 2rem;
    border-radius: 8px;
    text-align: center;
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
}

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

.service-icon {
    width: 70px;
    height: 70px;
    margin: 0 auto 1.5rem;
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
}

.service-icon svg {
    width: 32px;
    height: 32px;
    stroke: var(--color-white);
}

.service-card h3 {
    margin-bottom: 1rem;
    color: var(--color-black);
}

.service-card p {
    color: var(--color-gray);
}

/* ===== Portfolio / Carousel ===== */
.portfolio {
    padding: 100px 0;
    background: var(--color-white);
}

.carousel {
    position: relative;
    display: flex;
    align-items: center;
    gap: 1rem;
}

.carousel-track-container {
    overflow: hidden;
    border-radius: 8px;
    flex: 1;
}

.carousel-track {
    display: flex;
    gap: 1rem;
    transition: transform 0.5s ease;
}

.carousel-slide {
    flex: 0 0 calc(33.333% - 0.67rem);
    aspect-ratio: 4/3;
    border-radius: 8px;
    overflow: hidden;
    cursor: pointer;
}

.carousel-slide img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s ease;
}

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

.carousel-btn {
    flex-shrink: 0;
    width: 50px;
    height: 50px;
    border-radius: 50%;
    background: var(--color-primary);
    border: none;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
    box-shadow: var(--shadow-md);
}

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

.carousel-btn svg {
    width: 24px;
    height: 24px;
    stroke: var(--color-white);
}

.carousel-dots {
    display: flex;
    justify-content: center;
    gap: 0.5rem;
    margin-top: 2rem;
}

.carousel-dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: var(--color-light-gray);
    border: 2px solid var(--color-primary);
    cursor: pointer;
    transition: var(--transition);
}

.carousel-dot.active {
    background: var(--color-primary);
}

/* ===== About ===== */
.about {
    padding: 100px 0;
    background: var(--color-light-gray);
}

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

.about-text p {
    color: var(--color-gray);
    margin-bottom: 1rem;
}

.about-text .section-title {
    text-align: left;
    margin-bottom: 1.5rem;
}

.stats {
    display: flex;
    gap: 2rem;
    margin-top: 2rem;
}

.stat {
    text-align: center;
}

.stat-number {
    display: block;
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--color-primary);
}

.stat-label {
    font-size: 0.9rem;
    color: var(--color-gray);
}

.about-image {
    display: flex;
    align-items: center;
    justify-content: center;
}

.about-image img {
    max-width: 300px;
    filter: drop-shadow(0 10px 30px rgba(0, 0, 0, 0.15));
}

/* ===== Contact ===== */
.contact {
    padding: 100px 0;
    background: var(--color-white);
}

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

.contact-item {
    display: flex;
    gap: 1rem;
    margin-bottom: 1.5rem;
}

.contact-icon {
    width: 50px;
    height: 50px;
    flex-shrink: 0;
    background: var(--color-light-gray);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
}

.contact-icon svg {
    width: 24px;
    height: 24px;
    stroke: var(--color-primary);
}

.contact-item h4 {
    font-size: 1rem;
    margin-bottom: 0.25rem;
}

.contact-item p {
    color: var(--color-gray);
}

.contact-form {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 16px;
    font-family: var(--font-main);
    font-size: 1rem;
    border: 1px solid #ddd;
    border-radius: 4px;
    transition: var(--transition);
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(201, 162, 39, 0.1);
}

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

/* ===== Footer ===== */
.footer {
    background: var(--color-black);
    color: var(--color-white);
    padding: 60px 0 0;
}

.footer-content {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr;
    gap: 3rem;
    padding-bottom: 40px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-logo img {
    height: 60px;
    margin-bottom: 1rem;
}

.footer-logo p {
    color: rgba(255, 255, 255, 0.7);
}

.footer h4 {
    margin-bottom: 1.5rem;
    color: var(--color-primary);
}

.footer-links ul li {
    margin-bottom: 0.75rem;
}

.footer-links a {
    color: rgba(255, 255, 255, 0.7);
    transition: var(--transition);
}

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

.footer-contact p {
    color: rgba(255, 255, 255, 0.7);
    margin-bottom: 0.5rem;
}

.footer-bottom {
    text-align: center;
    padding: 20px 0;
    color: rgba(255, 255, 255, 0.5);
    font-size: 0.9rem;
}

/* ===== Modal / Lightbox ===== */
.lightbox {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.95);
    z-index: 2000;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
}

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

.lightbox img {
    max-width: 90%;
    max-height: 90vh;
    border-radius: 8px;
}

.lightbox-close {
    position: absolute;
    top: 20px;
    right: 20px;
    width: 50px;
    height: 50px;
    background: var(--color-primary);
    border: none;
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
    color: var(--color-white);
}

/* ===== Responsive ===== */
@media (max-width: 992px) {
    .hero h1 {
        font-size: 2.5rem;
    }

    .about-content,
    .contact-content {
        grid-template-columns: 1fr;
        gap: 2rem;
    }

    .about-image {
        order: -1;
    }

    .about-text .section-title {
        text-align: center;
    }

    .footer-content {
        grid-template-columns: 1fr 1fr;
    }

    .carousel-slide {
        flex: 0 0 calc(50% - 0.5rem);
    }
}

@media (max-width: 768px) {
    .nav-list {
        position: fixed;
        top: 80px;
        left: 0;
        right: 0;
        background: var(--color-white);
        flex-direction: column;
        padding: 2rem;
        gap: 1rem;
        box-shadow: var(--shadow-md);
        transform: translateY(-100%);
        opacity: 0;
        visibility: hidden;
        transition: var(--transition);
    }

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

    .mobile-toggle {
        display: flex;
    }

    .hero h1 {
        font-size: 2rem;
    }

    .section-title {
        font-size: 2rem;
    }

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

    .footer-content {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .carousel-slide {
        flex: 0 0 100%;
    }

    .carousel-btn {
        width: 40px;
        height: 40px;
    }
}

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

.service-card,
.contact-item,
.stat {
    animation: fadeInUp 0.6s ease forwards;
}

.service-card:nth-child(1) { animation-delay: 0.1s; }
.service-card:nth-child(2) { animation-delay: 0.2s; }
.service-card:nth-child(3) { animation-delay: 0.3s; }
.service-card:nth-child(4) { animation-delay: 0.4s; }