/* Reset y configuración base */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --color-primary: #722f37;
    --color-secondary: #c9a96e;
    --color-white: #ffffff;
    --color-light: #f8f9fa;
    --color-dark: #2c3e50;
    --color-text: #333333;
    --color-border: #e9ecef;
    --color-shadow: rgba(0, 0, 0, 0.1);
    
    --font-primary: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    --border-radius: 8px;
    --transition: all 0.3s ease;
    --shadow: 0 2px 10px var(--color-shadow);
}

body {
    font-family: var(--font-primary);
    line-height: 1.6;
    color: var(--color-text);
    background-color: var(--color-light);
}

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

/* Header */
.header {
    background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
    color: var(--color-white);
    padding: 1.5rem 0;
    text-align: center;
    box-shadow: var(--shadow);
}

.header__title {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
}

.header__subtitle {
    font-size: 1.2rem;
    opacity: 0.9;
}

/* Navegación */
.nav {
    background: var(--color-white);
    padding: 1rem 0;
    box-shadow: var(--shadow);
    position: sticky;
    top: 0;
    z-index: 100;
}

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

.nav__btn {
    background: var(--color-light);
    border: 2px solid var(--color-border);
    padding: 0.75rem 1.5rem;
    border-radius: var(--border-radius);
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    color: var(--color-text);
}

.nav__btn:hover {
    background: var(--color-secondary);
    color: var(--color-white);
    border-color: var(--color-secondary);
    transform: translateY(-2px);
}

.nav__btn--active {
    background: var(--color-primary);
    color: var(--color-white);
    border-color: var(--color-primary);
}

/* Main content */
.main {
    padding: 2rem 0;
    min-height: calc(100vh - 200px);
}

.content {
    background: var(--color-white);
    border-radius: var(--border-radius);
    box-shadow: var(--shadow);
    padding: 2rem;
    margin-top: 1rem;
}

/* Filtros */
.filters {
    background: var(--color-white);
    border-radius: var(--border-radius);
    box-shadow: var(--shadow);
    padding: 1.5rem;
    margin-bottom: 1rem;
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
    align-items: end;
}

/* Barra de búsqueda sticky */
.filters__search-sticky {
    background: var(--color-white);
    border-radius: var(--border-radius);
    box-shadow: var(--shadow);
    padding: 1rem 1.5rem;
    margin-bottom: 1rem;
    position: sticky;
    top: 80px; /* Justo debajo de la navegación principal */
    z-index: 90;
}

/* Selectores normales (no sticky) */
.filters__selects {
    background: var(--color-white);
    border-radius: var(--border-radius);
    box-shadow: var(--shadow);
    padding: 1.5rem;
    margin-bottom: 1rem;
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
    align-items: end;
}

.filters__group {
    min-width: 200px;
    flex: 1;
}

.filters__group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 600;
    color: var(--color-text);
}

.filters__input,
.filters__select {
    width: 100%;
    padding: 0.75rem;
    border: 2px solid var(--color-border);
    border-radius: var(--border-radius);
    font-size: 1rem;
    transition: var(--transition);
    background: var(--color-white);
}

.filters__input:focus,
.filters__select:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(114, 47, 55, 0.1);
}

/* Loading y estados */
.loading {
    text-align: center;
    padding: 3rem;
    color: var(--color-secondary);
    font-size: 1.2rem;
}

.empty-state {
    text-align: center;
    padding: 3rem;
    color: var(--color-text);
}

.empty-state__icon {
    font-size: 3rem;
    margin-bottom: 1rem;
}

/* Responsive */
@media (max-width: 768px) {
    .container {
        padding: 0 15px;
    }
    
    .header__title {
        font-size: 2rem;
    }
    
    .nav__buttons {
        gap: 0.5rem;
    }
    
    .nav__btn {
        padding: 0.6rem 1rem;
        font-size: 0.9rem;
    }
    
    .filters {
        flex-direction: column;
        align-items: stretch;
    }
    
    .filters__group {
        min-width: auto;
    }
    
    .content {
        padding: 1.5rem;
    }
}

@media (max-width: 480px) {
    .header__title {
        font-size: 1.8rem;
    }
    
    .nav__btn {
        flex: 1;
        text-align: center;
    }
}