/* Reset y Estilos Base */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --primary-color: #0a0a0a;
    --secondary-color: #1a1a1a;
    --accent-color: #c9a961;
    --accent-dark: #b8943f;
    --text-primary: #2c2c2c;
    --text-secondary: #666666;
    --text-light: #ffffff;
    --background-light: #fafafa;
    --background-white: #ffffff;
    --border-color: #e5e5e5;
    --gradient-primary: linear-gradient(135deg, #0a0a0a, #1a1a1a);
    --gradient-accent: linear-gradient(135deg, #c9a961, #b8943f);
    --shadow-soft: 0 4px 20px rgba(0,0,0,0.08);
    --shadow-medium: 0 8px 30px rgba(0,0,0,0.12);
    --shadow-strong: 0 15px 40px rgba(0,0,0,0.15);
}

body {
    font-family: 'Montserrat', sans-serif;
    line-height: 1.7;
    color: var(--text-primary);
    background-color: var(--background-white);
    font-weight: 400;
    letter-spacing: 0.01em;
}

h1, h2, h3 {
    font-family: 'Playfair Display', serif;
    font-weight: 700;
    line-height: 1.2;
}

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

/* Header */
.header {
    background: rgba(255,255,255,0.95);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid rgba(201,169,97,0.1);
    position: fixed;
    width: 100%;
    top: 0;
    z-index: 1000;
    transition: all 0.3s ease;
}

.nav {
    padding: 1rem 0;
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo h2 {
    background: var(--gradient-accent);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    font-size: 1.6rem;
    font-weight: 700;
    letter-spacing: -0.02em;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 2rem;
}

.nav-menu a {
    text-decoration: none;
    color: var(--text-primary);
    font-weight: 500;
    transition: all 0.3s ease;
    position: relative;
    font-size: 0.95rem;
    letter-spacing: 0.02em;
}

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

.nav-menu a::after {
    content: '';
    position: absolute;
    bottom: -8px;
    left: 50%;
    width: 0;
    height: 2px;
    background: var(--gradient-accent);
    transition: all 0.3s ease;
    transform: translateX(-50%);
}

.nav-menu a:hover::after {
    width: 80%;
}

.hamburger {
    display: none;
    flex-direction: column;
    cursor: pointer;
}

.hamburger span {
    width: 25px;
    height: 3px;
    background-color: var(--primary-color);
    margin: 3px 0;
    transition: 0.3s;
}

/* Hero Section */
.hero {
    height: 100vh;
    background: linear-gradient(135deg, rgba(10,10,10,0.85), rgba(26,26,26,0.75)),
                url('../estudio-contable/images/young-business-team-working-together-office.jpg');
    background-size: cover;
    background-position: center;
    background-attachment: fixed;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    color: var(--text-light);
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: radial-gradient(circle at 20% 50%, rgba(201,169,97,0.1) 0%, transparent 50%);
    pointer-events: none;
}

.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(26,26,26,0.3);
}

.hero-content {
    position: relative;
    z-index: 2;
    max-width: 800px;
    padding: 0 20px;
}

.hero-title {
    font-size: 4.5rem;
    margin-bottom: 1.5rem;
    font-weight: 700;
    text-shadow: 2px 2px 8px rgba(0,0,0,0.3);
    letter-spacing: -0.02em;
    line-height: 1.1;
    opacity: 0;
    animation: fadeInUp 1s ease 0.3s forwards;
}

.hero-subtitle {
    font-size: 1.4rem;
    margin-bottom: 2.5rem;
    font-weight: 300;
    line-height: 1.6;
    opacity: 0;
    animation: fadeInUp 1s ease 0.6s forwards;
    color: rgba(255,255,255,0.9);
}

.hero-buttons {
    display: flex;
    gap: 1.5rem;
    justify-content: center;
    flex-wrap: wrap;
    opacity: 0;
    animation: fadeInUp 1s ease 0.9s forwards;
}

.btn-primary, .btn-secondary {
    padding: 18px 40px;
    border: none;
    border-radius: 50px;
    text-decoration: none;
    font-weight: 600;
    transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    cursor: pointer;
    display: inline-block;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    font-size: 0.85rem;
    position: relative;
    overflow: hidden;
}

.btn-primary {
    background: var(--gradient-accent);
    color: var(--text-light);
    box-shadow: 0 8px 25px rgba(201,169,97,0.3);
    transform: translateY(0);
}

.btn-primary::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.2), transparent);
    transition: left 0.5s;
}

.btn-primary:hover::before {
    left: 100%;
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 12px 35px rgba(201,169,97,0.4);
}

.btn-secondary {
    background: transparent;
    color: var(--text-light);
    border: 2px solid rgba(255,255,255,0.3);
    backdrop-filter: blur(10px);
}

.btn-secondary:hover {
    background: rgba(255,255,255,0.1);
    border-color: rgba(255,255,255,0.5);
    transform: translateY(-3px);
    box-shadow: 0 8px 25px rgba(255,255,255,0.1);
}

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

.section-header {
    text-align: center;
    margin-bottom: 4rem;
}

.section-header h2 {
    font-size: 3.5rem;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 1.5rem;
    letter-spacing: -0.01em;
}

.section-header p {
    font-size: 1.2rem;
    color: var(--text-secondary);
    max-width: 600px;
    margin: 0 auto;
    line-height: 1.8;
    font-weight: 400;
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
}

.service-card {
    background: var(--background-white);
    padding: 3rem;
    border-radius: 20px;
    text-align: center;
    box-shadow: var(--shadow-soft);
    transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    position: relative;
    overflow: hidden;
}

.service-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: var(--gradient-accent);
    transform: scaleX(0);
    transition: transform 0.4s ease;
}

.service-card:hover::before {
    transform: scaleX(1);
}

.service-card:hover {
    transform: translateY(-15px);
    box-shadow: var(--shadow-strong);
}

.service-icon {
    width: 90px;
    height: 90px;
    margin: 0 auto 2rem;
    background: var(--gradient-accent);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-light);
    box-shadow: 0 8px 25px rgba(201,169,97,0.3);
    transition: all 0.3s ease;
}

.service-card:hover .service-icon {
    transform: scale(1.1);
    box-shadow: 0 12px 35px rgba(201,169,97,0.4);
}

.service-card h3 {
    font-size: 1.6rem;
    margin-bottom: 1.2rem;
    color: var(--primary-color);
    font-weight: 600;
    letter-spacing: -0.01em;
}

.service-card p {
    color: var(--text-secondary);
    line-height: 1.7;
    font-size: 1rem;
}

/* About Section */
.about {
    padding: 100px 0;
    background-color: var(--background-white);
}

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

.about-text h2 {
    font-size: 3.5rem;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 2.5rem;
    letter-spacing: -0.01em;
}

.about-text p {
    font-size: 1.1rem;
    color: var(--text-secondary);
    margin-bottom: 1.8rem;
    line-height: 1.8;
    font-weight: 400;
}

.stats {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
    margin-top: 3rem;
}

.stat {
    text-align: center;
}

.stat h3 {
    font-size: 2.8rem;
    background: var(--gradient-accent);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 0.8rem;
    font-weight: 700;
}

.stat p {
    color: var(--text-secondary);
    font-weight: 500;
}

.about-image {
    border-radius: 20px;
    overflow: hidden;
    box-shadow: var(--shadow-medium);
    position: relative;
}

.about-image::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--gradient-accent);
    opacity: 0;
    transition: opacity 0.3s ease;
    z-index: 1;
}

.about-image:hover::before {
    opacity: 0.1;
}

.about-image img {
    width: 100%;
    height: auto;
    display: block;
}

/* Values Section */
.values {
    padding: 80px 0;
    background-color: var(--background-light);
}

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

.value-card {
    background: var(--background-white);
    padding: 3rem;
    text-align: center;
    border-radius: 20px;
    border-left: 4px solid transparent;
    background-image: linear-gradient(var(--background-white), var(--background-white)), var(--gradient-accent);
    background-origin: border-box;
    background-clip: padding-box, border-box;
    border: 4px solid transparent;
    box-shadow: var(--shadow-soft);
    transition: all 0.3s ease;
}

.value-card h3 {
    font-size: 2rem;
    background: var(--gradient-accent);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 1.2rem;
    font-weight: 600;
}

.value-card p {
    color: var(--text-secondary);
    line-height: 1.6;
}

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

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

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

.contact-text h2 {
    font-size: 3.5rem;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 1.5rem;
    letter-spacing: -0.01em;
}

.contact-text p {
    font-size: 1.1rem;
    color: var(--text-secondary);
    margin-bottom: 2rem;
}

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

.contact-item {
    display: flex;
    align-items: flex-start;
    gap: 1rem;
}

.contact-item svg {
    color: var(--accent-color);
    flex-shrink: 0;
    margin-top: 5px;
}

.contact-item span {
    color: var(--text-secondary);
    line-height: 1.6;
}

.contact-form {
    background: linear-gradient(135deg, rgba(201,169,97,0.05), rgba(201,169,97,0.02));
    padding: 3rem;
    border-radius: 20px;
    box-shadow: var(--shadow-soft);
    border: 1px solid rgba(201,169,97,0.1);
}

.form-group {
    margin-bottom: 1.5rem;
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 18px;
    border: 1px solid var(--border-color);
    border-radius: 12px;
    font-size: 1rem;
    font-family: 'Montserrat', sans-serif;
    transition: all 0.3s ease;
    background: var(--background-white);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--accent-color);
    box-shadow: 0 0 0 3px rgba(201,169,97,0.1);
    transform: translateY(-2px);
}

.form-group textarea {
    resize: vertical;
}

/* Footer */
.footer {
    background: var(--gradient-primary);
    color: var(--text-light);
    padding: 60px 0 20px;
    position: relative;
    overflow: hidden;
}

.footer::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: var(--gradient-accent);
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin-bottom: 2rem;
}

.footer-section h3,
.footer-section h4 {
    color: var(--accent-color);
    margin-bottom: 1.5rem;
    font-weight: 600;
    letter-spacing: 0.02em;
}

.footer-section p,
.footer-section li {
    color: #cccccc;
    line-height: 1.6;
}

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

.footer-section li {
    margin-bottom: 0.5rem;
}

.footer-section a {
    color: #cccccc;
    text-decoration: none;
    transition: color 0.3s ease;
}

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

.footer-bottom {
    border-top: 1px solid rgba(255,255,255,0.1);
    padding-top: 2rem;
    text-align: center;
    color: #cccccc;
}

/* Responsive Design */
@media (max-width: 768px) {
    .hamburger {
        display: flex;
    }

    .nav-menu {
        position: fixed;
        left: -100%;
        top: 70px;
        flex-direction: column;
        background-color: var(--background-white);
        width: 100%;
        text-align: center;
        transition: 0.3s;
        box-shadow: 0 10px 27px rgba(0,0,0,0.05);
        padding: 2rem 0;
    }

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

    .hero-title {
        font-size: 2.5rem;
    }

    .hero-subtitle {
        font-size: 1.1rem;
    }

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

    .section-header h2 {
        font-size: 2rem;
    }

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

    .about-text h2,
    .contact-text h2 {
        font-size: 2rem;
    }

    .stats {
        grid-template-columns: 1fr;
        gap: 1rem;
    }

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

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

@media (max-width: 480px) {
    .container {
        padding: 0 15px;
    }

    .hero {
        height: 100vh;
        min-height: 600px;
    }

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

    .service-card,
    .value-card,
    .contact-form {
        padding: 1.5rem;
    }

    .btn-primary,
    .btn-secondary {
        padding: 12px 25px;
        font-size: 0.8rem;
    }
}

/* Animaciones y Transiciones */
.service-card,
.value-card {
    opacity: 0;
    transform: translateY(30px);
    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; }

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

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(40px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes slideInLeft {
    from {
        opacity: 0;
        transform: translateX(-50px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes pulse {
    0%, 100% {
        transform: scale(1);
    }
    50% {
        transform: scale(1.05);
    }
}

@keyframes shimmer {
    0% {
        background-position: -1000px 0;
    }
    100% {
        background-position: 1000px 0;
    }
}

/* Scroll Behavior */
html {
    scroll-behavior: smooth;
}

/* Focus States */
.btn-primary:focus,
.btn-secondary:focus,
input:focus,
select:focus,
textarea:focus {
    outline: 2px solid var(--accent-color);
    outline-offset: 2px;
}

/* Header Scroll Effect */
.header.scrolled {
    background: rgba(255,255,255,0.98);
    box-shadow: var(--shadow-soft);
}

/* Loading Animation */
.loading {
    animation: pulse 1.5s infinite;
}

/* Enhanced Hover States */
.contact-item:hover svg {
    transform: scale(1.1);
    color: var(--accent-color);
    transition: all 0.3s ease;
}

/* Custom Scrollbar */
::-webkit-scrollbar {
    width: 10px;
}

::-webkit-scrollbar-track {
    background: var(--background-light);
}

::-webkit-scrollbar-thumb {
    background: var(--gradient-accent);
    border-radius: 5px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--accent-dark);
}