:root {
    --primary: #000000;
    --primary-hover: #1a1a1a;
    --secondary: #ffffff;
    --bg-light: #ffffff;
    --text-dark: #000000;
    --text-gray: #757575;
    --text-light: #9e9e9e;
    --white: #ffffff;
    --black: #000000;
    --border: #eeeeee;
    --radius: 0;
    --shadow: 0 1px 3px rgba(0, 0, 0, 0.06);
    --shadow-hover: 0 4px 12px rgba(0, 0, 0, 0.1);
    --transition: all 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94);
    --whatsapp: #25D366;
    --whatsapp-dark: #128C7E;
}

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

body { 
    font-family: 'Helvetica Neue', Helvetica, Arial, sans-serif;
    background-color: var(--bg-light); 
    color: var(--text-dark); 
    line-height: 1.7;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    letter-spacing: 0.01em;
}

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

ul { list-style: none; }

/* Container */
.container { 
    max-width: 1600px; 
    margin: 0 auto; 
    padding: 0 60px;
}

@media (max-width: 1024px) {
    .container {
        padding: 0 40px;
    }
}

/* Header */
header { 
    background: var(--white); 
    border-bottom: 1px solid var(--border); 
    padding: 20px 0;
    position: sticky; 
    top: 0; 
    z-index: 100;
    backdrop-filter: blur(10px);
    background: rgba(255, 255, 255, 0.95);
}

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

.logo { 
    font-size: 1.5rem; 
    font-weight: 700; 
    color: var(--black);
    letter-spacing: -0.02em;
    transition: var(--transition);
    display: flex;
    align-items: center;
}

.logo:hover {
    opacity: 0.7;
}

/* Logo Image */
.logo img {
    height: 60px;
    width: auto;
    display: block;
}

.nav-links { 
    display: flex; 
    gap: 32px; 
    align-items: center;
}

.nav-links a {
    font-size: 0.95rem;
    font-weight: 500;
    color: var(--text-dark);
    position: relative;
}

.nav-links a:hover {
    color: var(--text-gray);
}

.cart-icon { 
    position: relative; 
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 8px;
}

.cart-badge { 
    background: var(--black); 
    color: var(--white); 
    font-size: 0.7rem; 
    padding: 2px 8px;
    border-radius: 12px;
    font-weight: 600;
    min-width: 20px;
    text-align: center;
}

/* Buttons */
.btn { 
    display: inline-block; 
    padding: 14px 32px;
    border-radius: var(--radius);
    font-weight: 600; 
    text-align: center; 
    cursor: pointer; 
    border: none;
    transition: var(--transition);
    font-size: 0.95rem;
    letter-spacing: 0.01em;
}

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

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

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

.btn-outline:hover {
    background: var(--black);
    color: var(--white);
    transform: translateY(-2px);
}

.btn-whatsapp {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 12px 24px;
    border-radius: 999px;
    background: var(--whatsapp);
    color: #ffffff;
    font-weight: 600;
    font-size: 0.9rem;
    border: none;
    cursor: pointer;
    transition: var(--transition);
    text-decoration: none;
}

.btn-whatsapp:hover {
    background: var(--whatsapp-dark);
    transform: translateY(-1px);
}

.btn-block {
    width: 100%;
}

/* Inputs */
input, select, textarea { 
    width: 100%; 
    padding: 14px 16px;
    border: 2px solid var(--border);
    border-radius: var(--radius);
    outline: none; 
    font-size: 0.95rem;
    font-family: inherit;
    transition: var(--transition);
    background: var(--white);
}

input:focus, select:focus, textarea:focus { 
    border-color: var(--black);
}

label { 
    display: block; 
    margin-bottom: 8px;
    font-weight: 600;
    font-size: 0.9rem;
    color: var(--text-dark);
}

/* Responsive */
@media (max-width: 768px) {
    .container {
        padding: 0 16px;
    }
    
    header {
        padding: 16px 0;
    }
    
    .logo {
        font-size: 1.25rem;
    }
    
    .logo img {
        height: 50px;
    }
    
    .nav-links {
        gap: 20px;
        font-size: 0.9rem;
    }
    
    .btn {
        padding: 12px 24px;
        font-size: 0.9rem;
    }
}

@media (max-width: 480px) {
    .logo img {
        height: 40px;
    }
}