/* ============================================================
   DS-APPLE — Header
   Barra de navegação global estilo Apple.com
   ============================================================ */

/* ──────────────────────────────────────────
   HEADER GLOBAL
─────────────────────────────────────────── */

.ds-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: var(--z-nav);
    height: 44px;
    display: flex;
    align-items: center;
    background: var(--color-bg-nav);
    backdrop-filter: saturate(180%) blur(var(--blur-lg));
    -webkit-backdrop-filter: saturate(180%) blur(var(--blur-lg));
    border-bottom: 1px solid var(--color-divider);
    transition:
        background var(--duration-slow) var(--ease-default),
        box-shadow var(--duration-slow) var(--ease-default);
}

/* Header com scroll — leve sombra */
.ds-header.is-scrolled {
    box-shadow: 0 1px 0 var(--color-border-light);
}

/* Header modo escuro */
.ds-header--dark {
    background: var(--color-bg-nav-dark);
    border-bottom-color: var(--color-divider-dark);
}

/* Header transparente (sobre hero) */
.ds-header--transparent {
    background: transparent;
    backdrop-filter: none;
    -webkit-backdrop-filter: none;
    border-bottom-color: transparent;
}

/* Header com fundo sólido */
.ds-header--solid {
    background: var(--color-bg-primary);
    backdrop-filter: none;
}

/* ──────────────────────────────────────────
   INNER WRAPPER
─────────────────────────────────────────── */

.ds-header__inner {
    max-width: var(--container-2xl);
    margin-inline: auto;
    padding-inline: var(--container-padding);
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--space-4);
}

/* ──────────────────────────────────────────
   LOGO
─────────────────────────────────────────── */

.ds-header__logo {
    display: flex;
    align-items: center;
    color: var(--color-text-primary);
    text-decoration: none;
    flex-shrink: 0;
    transition: opacity var(--duration-base);
}

.ds-header__logo:hover {
    opacity: 0.8;
    text-decoration: none;
    color: inherit;
}

.ds-header--dark .ds-header__logo {
    color: #ffffff;
}

.ds-header__logo-icon {
    width: 16px;
    height: auto;
    fill: currentColor;
}

.ds-header__logo-text {
    font-family: var(--font-display);
    font-size: var(--text-body-lg);
    font-weight: var(--font-weight-semibold);
    letter-spacing: -0.01em;
}

/* ──────────────────────────────────────────
   NAV
─────────────────────────────────────────── */

.ds-header__nav {
    display: flex;
    align-items: center;
    gap: var(--space-1);
    flex: 1;
    justify-content: center;
}

.ds-header__nav-link {
    display: flex;
    align-items: center;
    height: 44px;
    padding-inline: var(--space-3);
    font-size: var(--text-callout);
    font-weight: var(--font-weight-regular);
    color: var(--color-text-primary);
    white-space: nowrap;
    text-decoration: none;
    border-radius: var(--radius-sm);
    transition:
        color var(--duration-base) var(--ease-default),
        opacity var(--duration-base) var(--ease-default);
    letter-spacing: -0.01em;
}

.ds-header__nav-link:hover {
    color: var(--color-text-secondary);
    text-decoration: none;
}

.ds-header__nav-link.is-active {
    color: var(--color-accent);
}

.ds-header--dark .ds-header__nav-link {
    color: rgba(255, 255, 255, 0.85);
}

.ds-header--dark .ds-header__nav-link:hover {
    color: #ffffff;
}

/* ──────────────────────────────────────────
   AÇÕES DO HEADER (direita)
─────────────────────────────────────────── */

.ds-header__actions {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    flex-shrink: 0;
}

.ds-header__action-btn {
    width: 32px;
    height: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-text-primary);
    text-decoration: none;
    cursor: pointer;
    border-radius: var(--radius-sm);
    background: none;
    border: none;
    transition: opacity var(--duration-base);
    font-size: 1rem;
}

.ds-header__action-btn:hover {
    opacity: 0.7;
    text-decoration: none;
    color: inherit;
}

.ds-header--dark .ds-header__action-btn {
    color: #ffffff;
}

/* Ícone SVG dentro do action-btn */
.ds-header__action-btn svg {
    width: 16px;
    height: 16px;
    fill: currentColor;
}

/* Indicador de notificação */
.ds-header__badge {
    position: relative;
}

.ds-header__badge-dot {
    position: absolute;
    top: 8px;
    right: 4px;
    width: 6px;
    height: 6px;
    background: var(--color-error);
    border-radius: var(--radius-circle);
    border: 1.5px solid var(--color-bg-primary);
}

/* ──────────────────────────────────────────
   HAMBURGER — Mobile
─────────────────────────────────────────── */

.ds-header__hamburger {
    display: none;
    flex-direction: column;
    gap: 4px;
    padding: var(--space-2);
    cursor: pointer;
    background: none;
    border: none;
    color: var(--color-text-primary);
}

.ds-header__hamburger span {
    display: block;
    width: 20px;
    height: 2px;
    background: currentColor;
    border-radius: 2px;
    transition: all var(--duration-base) var(--ease-out);
}

.ds-header__hamburger.is-active span:nth-child(1) {
    transform: translateY(6px) rotate(45deg);
}

.ds-header__hamburger.is-active span:nth-child(2) {
    opacity: 0;
}

.ds-header__hamburger.is-active span:nth-child(3) {
    transform: translateY(-6px) rotate(-45deg);
}

/* ──────────────────────────────────────────
   DRAWER — Menu mobile
─────────────────────────────────────────── */

.ds-drawer {
    position: fixed;
    inset: 0;
    z-index: calc(var(--z-nav) - 1);
    pointer-events: none;
}

.ds-drawer__overlay {
    position: absolute;
    inset: 0;
    background: rgba(0, 0, 0, 0.4);
    opacity: 0;
    transition: opacity var(--duration-slow) var(--ease-out);
    cursor: pointer;
}

.ds-drawer__panel {
    position: absolute;
    top: 0;
    right: 0;
    width: min(320px, 85vw);
    height: 100%;
    background: var(--color-bg-primary);
    transform: translateX(100%);
    transition: transform var(--duration-slow) var(--ease-out);
    overflow-y: auto;
    padding-top: 60px;
    padding-bottom: var(--space-8);
    padding-inline: var(--space-6);
    display: flex;
    flex-direction: column;
    gap: var(--space-1);
}

.ds-drawer.is-open {
    pointer-events: all;
}

.ds-drawer.is-open .ds-drawer__overlay {
    opacity: 1;
}

.ds-drawer.is-open .ds-drawer__panel {
    transform: translateX(0);
}

.ds-drawer__link {
    display: block;
    padding: var(--space-4) var(--space-2);
    font-size: var(--text-title);
    font-weight: var(--font-weight-semibold);
    color: var(--color-text-primary);
    text-decoration: none;
    border-bottom: 1px solid var(--color-border-light);
    transition: color var(--duration-base);
}

.ds-drawer__link:hover {
    color: var(--color-accent);
    text-decoration: none;
}

/* ──────────────────────────────────────────
   DROPDOWN MEGA MENU
─────────────────────────────────────────── */

.ds-header__dropdown {
    position: relative;
}

.ds-header__dropdown-menu {
    position: absolute;
    top: 100%;
    left: 50%;
    transform: translateX(-50%) translateY(8px);
    background: var(--color-bg-primary);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-xl);
    border: 1px solid var(--color-border-light);
    padding: var(--space-6);
    min-width: 220px;
    opacity: 0;
    pointer-events: none;
    transition:
        opacity var(--duration-base) var(--ease-out),
        transform var(--duration-base) var(--ease-out);
    z-index: var(--z-dropdown);
}

.ds-header__dropdown:hover .ds-header__dropdown-menu,
.ds-header__dropdown:focus-within .ds-header__dropdown-menu {
    opacity: 1;
    pointer-events: all;
    transform: translateX(-50%) translateY(0);
}

.ds-header__dropdown-link {
    display: block;
    padding: var(--space-2) var(--space-3);
    font-size: var(--text-body);
    color: var(--color-text-primary);
    border-radius: var(--radius-md);
    transition: background var(--duration-base);
    text-decoration: none;
}

.ds-header__dropdown-link:hover {
    background: var(--color-bg-secondary);
    text-decoration: none;
    color: var(--color-accent);
}

/* ──────────────────────────────────────────
   ESPAÇADOR DE HEADER — empurra o conteúdo
─────────────────────────────────────────── */

.ds-header-spacer {
    height: 44px;
}

/* ──────────────────────────────────────────
   RESPONSIVE
─────────────────────────────────────────── */

@media (max-width: 768px) {
    .ds-header__nav {
        display: none;
    }

    .ds-header__hamburger {
        display: flex;
    }
}

@media (max-width: 480px) {
    .ds-header__actions .ds-header__action-btn:nth-child(2) {
        display: none;
    }
}