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

:root {
    --primary-color: #1a1a1a;
    --secondary-color: #ffffff;
    --accent-color: #666666;
    --text-gray: #888888;
    --bg-light: #f8f8f8;
    --transition: all 0.3s ease;
}

body {
    font-family: 'Inter', sans-serif;
    line-height: 1.6;
    color: var(--primary-color);
    background-color: var(--secondary-color);
    overflow-x: hidden;
}

.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Navigation */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: var(--secondary-color);
    z-index: 1000;
    padding: 20px 40px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    box-shadow: 0 2px 10px rgba(0,0,0,0.05);
}

.logo {
    height: 50px;
    width: auto;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 40px;
}

.nav-menu a {
    text-decoration: none;
    color: var(--primary-color);
    font-weight: 500;
    font-size: 14px;
    letter-spacing: 0.5px;
    transition: var(--transition);
    position: relative;
}

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

.nav-menu a::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--primary-color);
    transition: width 0.3s ease;
}

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

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

.menu-toggle span {
    width: 25px;
    height: 2px;
    background: var(--primary-color);
    margin: 3px 0;
    transition: var(--transition);
}

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

/* Damas Background */
.damas-background {
    position: absolute;
    inset: 0;
    overflow: hidden;
    pointer-events: none;
}

/* Board Grid with CSS Grid and Pseudo Elements */
.board-grid {
    position: absolute;
    width: 100%;
    height: 100%;
    opacity: 0.02;
    background-image: 
        repeating-conic-gradient(
            from 45deg at 10% 50%,
            transparent 0deg,
            transparent 90deg,
            var(--primary-color) 90deg,
            var(--primary-color) 180deg
        );
    background-size: 80px 80px;
    background-position: 0 0, 40px 40px;
    animation: drift 120s linear infinite;
    mask-image: radial-gradient(
        ellipse at center,
        black 0%,
        transparent 70%
    );
    -webkit-mask-image: radial-gradient(
        ellipse at center,
        black 0%,
        transparent 70%
    );
}

.board-grid::before {
    content: '';
    position: absolute;
    inset: 0;
    background: 
        repeating-linear-gradient(
            45deg,
            transparent,
            transparent 40px,
            rgba(26, 26, 26, 0.01) 40px,
            rgba(26, 26, 26, 0.01) 80px
        );
    transform: scale(1.5);
}

@keyframes drift {
    from { transform: translate(0, 0) scale(1); }
    to { transform: translate(-80px, -80px) scale(1); }
}

/* Piece Trails - Movement Paths */
.piece-trail {
    position: absolute;
    width: 2px;
    height: 2px;
    opacity: 0;
    animation: trailMove 20s ease-in-out infinite;
}

.piece-trail::before {
    content: '';
    position: absolute;
    width: 30px;
    height: 30px;
    border-radius: 50%;
    background: radial-gradient(
        circle at center,
        var(--primary-color) 0%,
        transparent 70%
    );
    transform: translate(-50%, -50%);
    filter: blur(8px);
}

.piece-trail::after {
    content: '';
    position: absolute;
    width: 20px;
    height: 20px;
    border-radius: 50%;
    border: 1px solid var(--primary-color);
    transform: translate(-50%, -50%);
    opacity: 0.3;
}

.piece-1 {
    animation-delay: 0s;
    --start-x: 20%;
    --start-y: 30%;
    --end-x: 80%;
    --end-y: 70%;
}

.piece-2 {
    animation-delay: 7s;
    --start-x: 70%;
    --start-y: 20%;
    --end-x: 30%;
    --end-y: 80%;
}

.piece-3 {
    animation-delay: 14s;
    --start-x: 10%;
    --start-y: 60%;
    --end-x: 90%;
    --end-y: 40%;
}

@keyframes trailMove {
    0%, 100% {
        left: var(--start-x);
        top: var(--start-y);
        opacity: 0;
    }
    10% {
        opacity: 0.05;
    }
    50% {
        left: var(--end-x);
        top: var(--end-y);
        opacity: 0.02;
    }
    90% {
        opacity: 0;
    }
}

/* Advanced gradient overlay */
.damas-background::after {
    content: '';
    position: absolute;
    inset: 0;
    background: 
        radial-gradient(
            circle at 30% 50%,
            transparent 40%,
            rgba(255, 255, 255, 0.02) 50%,
            transparent 60%
        ),
        radial-gradient(
            circle at 70% 50%,
            transparent 40%,
            rgba(255, 255, 255, 0.02) 50%,
            transparent 60%
        );
    animation: breathe 10s ease-in-out infinite;
}

@keyframes breathe {
    0%, 100% { opacity: 0.5; }
    50% { opacity: 1; }
}

.hero-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 80px;
    align-items: center;
    padding: 40px;
    position: relative;
    z-index: 1;
}

.hero-text {
    animation: fadeInUp 0.8s ease-out;
}

.hero-title {
    font-size: clamp(48px, 8vw, 96px);
    line-height: 1;
    margin-bottom: 30px;
}

.subtitle {
    display: block;
    font-size: 18px;
    font-weight: 400;
    color: var(--accent-color);
    margin-bottom: 10px;
    letter-spacing: 2px;
    text-transform: uppercase;
}

.name {
    display: block;
    font-weight: 300;
}

.surname {
    display: block;
    font-weight: 700;
    margin-top: -10px;
}

.hero-description {
    font-size: 18px;
    color: var(--text-gray);
    margin-bottom: 40px;
    line-height: 1.8;
}

.hero-cta {
    display: flex;
    gap: 20px;
    flex-wrap: wrap;
}

.btn {
    padding: 15px 40px;
    text-decoration: none;
    font-weight: 500;
    border-radius: 50px;
    transition: var(--transition);
    display: inline-block;
    font-size: 16px;
}

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

.btn-primary:hover {
    background: #333;
    transform: translateY(-2px);
    box-shadow: 0 10px 20px rgba(0,0,0,0.1);
}

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

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

.hero-image {
    position: relative;
    animation: fadeIn 1s ease-out;
}

.hero-image::before {
    content: '';
    position: absolute;
    inset: -20px;
    background: 
        radial-gradient(
            circle at 20% 80%,
            rgba(26, 26, 26, 0.05) 0%,
            transparent 40%
        ),
        radial-gradient(
            circle at 80% 20%,
            rgba(26, 26, 26, 0.05) 0%,
            transparent 40%
        );
    border-radius: 20px;
    filter: blur(40px);
    animation: morphGradient 15s ease-in-out infinite;
}

@keyframes morphGradient {
    0%, 100% {
        transform: scale(1) rotate(0deg);
    }
    33% {
        transform: scale(1.05) rotate(120deg);
    }
    66% {
        transform: scale(0.95) rotate(240deg);
    }
}

.hero-image img {
    width: 100%;
    max-width: 500px;
    height: auto;
    filter: grayscale(100%);
    border-radius: 20px;
    box-shadow: 0 20px 40px rgba(0,0,0,0.2);
    position: relative;
    z-index: 1;
}

/* Sections */
.section {
    padding: 100px 40px;
}

.section-content {
    max-width: 1200px;
    margin: 0 auto;
}

.section-title {
    font-size: 48px;
    font-weight: 700;
    margin-bottom: 40px;
    position: relative;
    display: inline-block;
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 0;
    width: 60px;
    height: 4px;
    background: var(--primary-color);
}

.section-description {
    font-size: 18px;
    color: var(--text-gray);
    margin-bottom: 40px;
    max-width: 600px;
}

/* Livros Section */
.livros-section {
    background: var(--bg-light);
}

.livros-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 40px;
}

.livro-card {
    background: var(--secondary-color);
    padding: 40px;
    border-radius: 10px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.1);
    transition: var(--transition);
}

.livro-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 40px rgba(0,0,0,0.15);
}

.livro-card h3 {
    font-size: 24px;
    margin-bottom: 15px;
}

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

/* História Section */
.historia-content {
    max-width: 800px;
}

.historia-content p {
    font-size: 18px;
    line-height: 1.8;
    margin-bottom: 40px;
    color: var(--text-gray);
}

.conquistas {
    background: var(--bg-light);
    padding: 40px;
    border-radius: 10px;
}

.conquistas h3 {
    font-size: 28px;
    margin-bottom: 20px;
}

.conquistas-list {
    list-style: none;
}

.conquistas-list li {
    padding: 15px 0;
    border-bottom: 1px solid #e0e0e0;
    font-size: 18px;
    display: flex;
    align-items: center;
}

.conquistas-list li:last-child {
    border-bottom: none;
}

.conquistas-list li::before {
    content: '✓';
    margin-right: 15px;
    color: var(--accent-color);
    font-weight: bold;
    font-size: 20px;
}

/* Contato Section */
.contato-section {
    background: var(--bg-light);
}

.contato-form {
    max-width: 600px;
}

.form-group {
    margin-bottom: 25px;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 15px 20px;
    border: 2px solid transparent;
    background: var(--secondary-color);
    border-radius: 8px;
    font-size: 16px;
    font-family: inherit;
    transition: var(--transition);
}

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

/* Animations */
@keyframes fadeIn {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}

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

/* Responsive */
@media (max-width: 968px) {
    .nav-menu {
        position: fixed;
        left: -100%;
        top: 70px;
        flex-direction: column;
        background-color: var(--secondary-color);
        width: 100%;
        text-align: center;
        transition: 0.3s;
        box-shadow: 0 10px 27px rgba(0,0,0,0.05);
        padding: 40px 0;
    }

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

    .menu-toggle {
        display: flex;
    }

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

    .hero-image {
        order: -1;
    }

    .hero-cta {
        justify-content: center;
    }

    .section {
        padding: 60px 20px;
    }
}