/**
 * Estilos estruturais e componentes principais do Sindsep Acaraú.
 */

/* 1. Resets e Configuração Base */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

body {
    background-color: var(--color-background);
    color: var(--color-on-background);
    font-family: var(--font-family-body);
    font-size: 16px;
    line-height: 1.5;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
}

h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-family-heading);
    font-weight: 700;
    color: var(--color-primary);
    line-height: 1.25;
}

a {
    color: inherit;
    text-decoration: none;
    transition: color 0.2s ease, border-color 0.2s ease, transform 0.2s ease;
}

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

button, input, select, textarea {
    font-family: inherit;
    font-size: inherit;
    color: inherit;
}

/* 2. Utilitários de Layout */
.max-w-container-max {
    max-width: var(--container-max);
    margin-left: auto;
    margin-right: auto;
}

.px-margin-desktop {
    padding-left: var(--spacing-margin-desktop);
    padding-right: var(--spacing-margin-desktop);
}

@media (max-width: 768px) {
    .px-margin-desktop {
        padding-left: var(--spacing-margin-mobile);
        padding-right: var(--spacing-margin-mobile);
    }
}

/* 3. Componentes de UI */
.bg-primary { background-color: var(--color-primary); color: var(--color-on-primary); }
.bg-secondary { background-color: var(--color-secondary); color: var(--color-on-secondary); }
.bg-surface { background-color: var(--color-surface); }
.text-primary { color: var(--color-primary); }
.text-secondary { color: var(--color-secondary); }

/* Botões */
.btn {
    display: inline-block;
    padding: 10px 24px;
    border-radius: var(--border-radius-xl);
    font-weight: 600;
    text-align: center;
    cursor: pointer;
    border: none;
    transition: all 0.2s ease;
}

.btn:active {
    transform: scale(0.95);
}

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

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

/* Header & Navegação */
header.sticky {
    position: sticky;
    top: 0;
    z-index: 50;
    background-color: var(--color-surface-container-lowest);
    border-bottom: 1px solid var(--color-outline-variant);
    box-shadow: var(--shadow-sm);
}

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

ul.nav-menu {
    display: flex;
    list-style: none;
    gap: 32px;
}

ul.nav-menu li a {
    font-weight: 600;
    font-size: 14px;
    color: var(--color-on-surface-variant);
}

ul.nav-menu li a:hover,
ul.nav-menu li.current-menu-item a {
    color: var(--color-primary);
    border-bottom: 2px solid var(--color-primary);
    padding-bottom: 4px;
}

/* Footer */
footer {
    background-color: var(--color-surface-container-high);
    border-top: 1px solid var(--color-outline-variant);
    padding-top: 60px;
    padding-bottom: 20px;
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1.5fr;
    gap: 40px;
    margin-bottom: 40px;
}

@media (max-width: 768px) {
    .footer-grid {
        grid-template-columns: 1fr;
        gap: 30px;
    }
}