/* ============================================
   ANTI-FLASH: Hide translatable content until i18n applies
   This prevents English text flashing before Portuguese loads
   ============================================ */

/* Initially hide text that will be translated */
[data-i18n]:not(.i18n-ready) {
    opacity: 0;
    transition: opacity 0.15s ease-out;
}

/* Once i18n is applied, show all translated content */
html.i18n-applied [data-i18n] {
    opacity: 1;
}

/* Fallback: if i18n hasn't applied after 500ms, show content anyway */
@keyframes fadeInFallback {
    from { opacity: 0; }
    to { opacity: 1; }
}

/* Apply fallback animation with delay */
[data-i18n] {
    animation: fadeInFallback 0.2s ease-out 0.5s forwards;
}

/* When i18n is applied, cancel the animation and show immediately */
html.i18n-applied [data-i18n] {
    animation: none;
    opacity: 1;
}

/* ============================================
   HEADER STYLES - Matches v3 Prototype
   ============================================ */

.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    height: var(--header-height, 72px);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 48px;
    transition: all 0.4s var(--ease-smooth, cubic-bezier(0.4, 0, 0.2, 1));
}

.header--transparent {
    background: transparent;
}

.header--solid {
    background: rgba(10, 10, 10, 0.92);
    backdrop-filter: blur(24px);
    -webkit-backdrop-filter: blur(24px);
    box-shadow:
        0 1px 0 rgba(255, 255, 255, 0.05),
        0 4px 20px rgba(0, 0, 0, 0.4),
        0 8px 40px rgba(0, 0, 0, 0.3);
}

[data-theme="light"] .header--solid {
    background: rgba(255, 255, 255, 0.95);
    box-shadow:
        0 1px 0 rgba(0, 0, 0, 0.05),
        0 4px 20px rgba(0, 0, 0, 0.08),
        0 8px 40px rgba(0, 0, 0, 0.05);
}

/* ============================================
   LOGO
   ============================================ */
.header__logo {
    display: flex;
    align-items: center;
    gap: 14px;
    text-decoration: none;
    transition: opacity 0.2s;
}

.header__logo:hover {
    opacity: 0.8;
}

.header__logo-img {
    height: 42px;
    width: auto;
    object-fit: contain;
    filter: brightness(0) invert(1); /* White logo for dark/transparent header */
    transition: filter 0.3s;
}

.header--solid .header__logo-img {
    filter: none; /* Original logo colors for solid header */
}

[data-theme="light"] .header__logo-img {
    filter: none; /* Original colors in light mode */
}

[data-theme="light"] .header--transparent .header__logo-img {
    filter: brightness(0) invert(1); /* White for transparent header in light mode */
}

.header__logo-text {
    font-size: 13px;
    font-weight: 600;
    letter-spacing: 1.5px;
    text-transform: uppercase;
    color: var(--text-primary);
}

.header--transparent .header__logo-text {
    color: #fff;
}

.header__logo-text span {
    opacity: 0.4;
    margin: 0 6px;
    font-weight: 400;
}

@media (max-width: 900px) {
    .header__logo-text {
        display: none;
    }
}

/* ============================================
   NAVIGATION - Centered
   ============================================ */
.header__nav {
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    align-items: center;
    gap: 40px;
}

.header__nav-link {
    font-size: 12px;
    font-weight: 500;
    letter-spacing: 0.8px;
    text-transform: uppercase;
    color: var(--text-secondary);
    text-decoration: none;
    transition: all 0.2s;
    cursor: pointer;
    position: relative;
    padding: 8px 0;
}

.header--transparent .header__nav-link {
    color: rgba(255, 255, 255, 0.75);
}

.header__nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--premium-blue);
    transition: width 0.3s var(--ease-out, cubic-bezier(0.16, 1, 0.3, 1));
    box-shadow: 0 0 12px var(--premium-blue-glow);
}

.header--transparent .header__nav-link::after {
    background: #fff;
}

.header__nav-link:hover::after,
.header__nav-link.active::after {
    width: 100%;
}

.header__nav-link:hover,
.header__nav-link.active {
    color: var(--text-primary);
}

.header--transparent .header__nav-link:hover,
.header--transparent .header__nav-link.active {
    color: #fff;
}

/* ============================================
   ACTIONS
   ============================================ */
.header__actions {
    display: flex;
    align-items: center;
    gap: 12px;
}

.header__action-btn {
    width: 40px;
    height: 40px;
    border: none;
    background: transparent;
    color: var(--text-secondary);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 10px;
    transition: all 0.2s;
}

.header--transparent .header__action-btn {
    color: rgba(255, 255, 255, 0.75);
}

.header__action-btn:hover {
    background: var(--glass-bg);
    color: var(--text-primary);
}

.header--transparent .header__action-btn:hover {
    background: rgba(255, 255, 255, 0.1);
    color: #fff;
}

/* Theme Toggle Icons */
.theme-icon--light {
    display: none;
}

.theme-icon--dark {
    display: block;
}

[data-theme="light"] .theme-icon--light {
    display: block;
}

[data-theme="light"] .theme-icon--dark {
    display: none;
}

/* ============================================
   LANGUAGE TOGGLE
   ============================================ */
.header__lang-toggle {
    display: flex;
    align-items: center;
    gap: 2px;
    padding: 6px 8px;
    background: transparent;
    border: 1px solid var(--glass-border);
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.2s;
}

.header--transparent .header__lang-toggle {
    border-color: rgba(255, 255, 255, 0.2);
}

.header__lang-toggle:hover {
    background: var(--glass-bg);
    border-color: var(--text-secondary);
}

.header--transparent .header__lang-toggle:hover {
    background: rgba(255, 255, 255, 0.1);
    border-color: rgba(255, 255, 255, 0.4);
}

.header__lang-toggle span {
    font-size: 11px;
    font-weight: 600;
    letter-spacing: 0.5px;
    padding: 4px 6px;
    border-radius: 4px;
    color: var(--text-muted);
    transition: all 0.2s;
}

.header--transparent .header__lang-toggle span {
    color: rgba(255, 255, 255, 0.5);
}

.header__lang-toggle span.active {
    background: var(--premium-blue);
    color: #fff;
}

/* CSS-based language toggle state (prevents flash on page load) */
/* When Portuguese is selected, override the hardcoded .active class */
[data-lang="pt"] .header__lang-toggle .lang-en {
    background: transparent !important;
    color: var(--text-muted) !important;
}

[data-lang="pt"] .header__lang-toggle .lang-pt {
    background: var(--premium-blue) !important;
    color: #fff !important;
}

/* When English is selected (default), ensure EN is active */
[data-lang="en"] .header__lang-toggle .lang-en {
    background: var(--premium-blue) !important;
    color: #fff !important;
}

[data-lang="en"] .header__lang-toggle .lang-pt {
    background: transparent !important;
    color: var(--text-muted) !important;
}

.header__lang-toggle .lang-divider {
    width: 1px;
    height: 14px;
    background: var(--glass-border);
    padding: 0;
    margin: 0 2px;
}

.header--transparent .header__lang-toggle .lang-divider {
    background: rgba(255, 255, 255, 0.2);
}

/* Light mode - transparent header */
[data-theme="light"] .header--transparent .header__lang-toggle {
    border-color: rgba(255, 255, 255, 0.25);
}

[data-theme="light"] .header--transparent .header__lang-toggle:hover {
    background: rgba(255, 255, 255, 0.1);
    border-color: rgba(255, 255, 255, 0.4);
}

[data-theme="light"] .header--transparent .header__lang-toggle span {
    color: rgba(255, 255, 255, 0.6);
}

[data-theme="light"] .header--transparent .header__lang-toggle span.active {
    background: var(--premium-blue);
    color: #fff;
}

[data-theme="light"] .header--transparent .header__lang-toggle .lang-divider {
    background: rgba(255, 255, 255, 0.25);
}

/* CSS-based language toggle for transparent header (prevents flash) */
[data-lang="pt"] .header--transparent .header__lang-toggle .lang-en {
    background: transparent !important;
    color: rgba(255, 255, 255, 0.5) !important;
}

[data-lang="pt"] .header--transparent .header__lang-toggle .lang-pt {
    background: var(--premium-blue) !important;
    color: #fff !important;
}

[data-lang="en"] .header--transparent .header__lang-toggle .lang-en {
    background: var(--premium-blue) !important;
    color: #fff !important;
}

[data-lang="en"] .header--transparent .header__lang-toggle .lang-pt {
    background: transparent !important;
    color: rgba(255, 255, 255, 0.5) !important;
}

/* Light mode transparent header language toggle */
[data-theme="light"][data-lang="pt"] .header--transparent .header__lang-toggle .lang-en {
    background: transparent !important;
    color: rgba(255, 255, 255, 0.6) !important;
}

[data-theme="light"][data-lang="pt"] .header--transparent .header__lang-toggle .lang-pt {
    background: var(--premium-blue) !important;
    color: #fff !important;
}

[data-theme="light"][data-lang="en"] .header--transparent .header__lang-toggle .lang-en {
    background: var(--premium-blue) !important;
    color: #fff !important;
}

[data-theme="light"][data-lang="en"] .header--transparent .header__lang-toggle .lang-pt {
    background: transparent !important;
    color: rgba(255, 255, 255, 0.6) !important;
}

/* ============================================
   REGISTER BUTTON
   ============================================ */
.header__register-btn {
    padding: 8px 16px;
    font-size: 13px;
    font-weight: 600;
    color: var(--text-primary);
    background: transparent;
    border: 1px solid var(--glass-border);
    border-radius: 8px;
    text-decoration: none;
    transition: all 0.2s;
    white-space: nowrap;
}

.header--transparent .header__register-btn {
    color: rgba(255, 255, 255, 0.9);
    border-color: rgba(255, 255, 255, 0.2);
}

.header__register-btn:hover {
    background: var(--glass-bg);
    border-color: var(--text-secondary);
    transform: translateY(-1px);
}

.header--transparent .header__register-btn:hover {
    background: rgba(255, 255, 255, 0.1);
    border-color: rgba(255, 255, 255, 0.4);
}

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

/* ============================================
   STUDIO BUTTON
   ============================================ */
.header__studio-btn {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 10px 22px;
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid var(--premium-blue-border);
    border-radius: 10px;
    color: #fff;
    font-size: 12px;
    font-weight: 500;
    letter-spacing: 0.5px;
    text-decoration: none;
    cursor: pointer;
    transition: all 0.3s var(--ease-out, cubic-bezier(0.16, 1, 0.3, 1));
}

.header--solid .header__studio-btn {
    background: var(--text-primary);
    color: var(--bg-primary);
    border-color: transparent;
}

.header__studio-btn:hover {
    background: rgba(59, 130, 246, 0.1);
    border-color: var(--premium-blue);
    transform: translateY(-1px);
    box-shadow: 0 0 20px var(--premium-blue-glow), inset 0 0 0 1px var(--premium-blue-border);
}

.header--solid .header__studio-btn:hover {
    background: var(--text-primary);
    transform: translateY(-2px);
    box-shadow: 0 8px 30px rgba(255, 255, 255, 0.15);
}

[data-theme="light"] .header--solid .header__studio-btn:hover {
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.15);
}

/* Leave Button Variant (contextual back to home) */
.header__studio-btn--leave {
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    color: var(--text-primary);
}

.header--solid .header__studio-btn--leave {
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    color: var(--text-primary);
}

.header__studio-btn--leave:hover,
.header--solid .header__studio-btn--leave:hover {
    background: var(--glass-hover);
    border-color: var(--text-muted);
    transform: translateY(-1px);
    box-shadow: none;
}

.header__studio-icon {
    display: flex;
    align-items: center;
    justify-content: center;
}

.header__studio-arrow {
    display: flex;
    align-items: center;
    opacity: 0;
    transform: translateX(-5px);
    transition: all 0.3s;
}

.header__studio-btn:hover .header__studio-arrow {
    opacity: 1;
    transform: translateX(0);
}

/* ============================================
   MENU TOGGLE (Mobile)
   ============================================ */
.header__menu-toggle {
    display: none;
    flex-direction: column;
    justify-content: center;
    gap: 5px;
    width: 40px;
    height: 40px;
    background: transparent;
    border: none;
    border-radius: 10px;
    cursor: pointer;
    padding: 10px;
}

.header__menu-toggle span {
    display: block;
    width: 100%;
    height: 2px;
    background: var(--text-primary);
    transition: all 0.3s;
}

.header--transparent .header__menu-toggle span {
    background: #fff;
}

/* ============================================
   MOBILE HEADER LAYOUT
   ============================================ */
@media (max-width: 1024px) {
    .header {
        display: flex;
        justify-content: space-between;
        align-items: center;
    }

    .header__menu-toggle {
        display: flex;
        order: 1;
    }

    .header__logo {
        order: 2;
        position: absolute;
        left: 50%;
        transform: translateX(-50%);
    }

    .header__logo-img {
        height: 38px;
    }

    .header__nav {
        display: none;
    }

    .header__actions {
        order: 3;
    }

    /* Hide non-essential actions on mobile */
    .header__studio-btn,
    .header__account-btn,
    .header__lang-toggle {
        display: none !important;
    }
}

@media (max-width: 768px) {
    .header {
        padding: 0 20px;
    }
}

@media (max-width: 480px) {
    .header__logo-img {
        height: 32px;
    }

    .header__action-btn {
        width: 36px;
        height: 36px;
    }

    .header__menu-toggle {
        width: 36px;
        height: 36px;
        padding: 8px;
    }
}

/* ============================================
   AUTHENTICATED USER STATES
   ============================================ */

/* Hide register button when user is authenticated */
.is-authenticated .header__register-btn {
    display: none !important;
}

/* Logged-in account button accent color */
.is-authenticated .header__account-btn {
    color: var(--brand-accent, #3b82f6) !important;
}

.is-authenticated .header--transparent .header__account-btn {
    color: var(--brand-accent, #3b82f6) !important;
}

/* Mobile menu user greeting */
.mobile-menu__user {
    padding: 16px 24px;
    border-bottom: 1px solid var(--glass-border);
    margin-bottom: 8px;
}

.mobile-menu__user-name {
    font-size: 14px;
    font-weight: 600;
    color: var(--text-primary);
}

/* ============================================
   LIGHT MODE - Transparent Header
   Hero has dark overlay, so keep light/white text for contrast
   ============================================ */

/* Keep white text in transparent header - hero has dark overlay */
[data-theme="light"] .header--transparent .header__logo-text {
    color: rgba(255, 255, 255, 0.95);
}

[data-theme="light"] .header--transparent .header__logo-text span {
    opacity: 0.5;
}

[data-theme="light"] .header--transparent .header__nav-link {
    color: rgba(255, 255, 255, 0.8);
}

[data-theme="light"] .header--transparent .header__nav-link:hover,
[data-theme="light"] .header--transparent .header__nav-link.active {
    color: #ffffff;
}

[data-theme="light"] .header--transparent .header__nav-link::after {
    background: #ffffff;
    box-shadow: none;
}

[data-theme="light"] .header--transparent .header__action-btn {
    color: rgba(255, 255, 255, 0.8);
}

[data-theme="light"] .header--transparent .header__action-btn:hover {
    background: rgba(255, 255, 255, 0.1);
    color: #ffffff;
}

[data-theme="light"] .header--transparent .header__register-btn {
    color: rgba(255, 255, 255, 0.9);
    border-color: rgba(255, 255, 255, 0.25);
}

[data-theme="light"] .header--transparent .header__register-btn:hover {
    background: rgba(255, 255, 255, 0.1);
    border-color: rgba(255, 255, 255, 0.4);
}

[data-theme="light"] .header--transparent .header__studio-btn {
    background: rgba(255, 255, 255, 0.12);
    border-color: rgba(255, 255, 255, 0.25);
    color: #ffffff;
}

[data-theme="light"] .header--transparent .header__studio-btn:hover {
    background: rgba(255, 255, 255, 0.18);
    border-color: rgba(255, 255, 255, 0.4);
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.15);
}

[data-theme="light"] .header--transparent .header__menu-toggle span {
    background: rgba(255, 255, 255, 0.9);
}

/* Logo should be white/inverted in light mode transparent header */
[data-theme="light"] .header--transparent .header__logo-img {
    filter: brightness(0) invert(1);
}