/* ========================================
   Unified Header Styles
   Consistent header across all pages
   ======================================== */

/* ========================================
   Header Container
   ======================================== */

.unified-header {
    position: sticky;
    top: 0;
    z-index: var(--z-sticky, 200);
    background: var(--color-white, #ffffff);
    border-bottom: 1px solid var(--color-border, #e9ecef);
    box-shadow: var(--shadow-sm, 0 1px 2px rgba(0, 0, 0, 0.05));
}

.header-main {
    display: flex;
    align-items: center;
    justify-content: space-between;
    max-width: var(--container-max-width, 900px);
    margin: 0 auto;
    padding: var(--space-3, 12px) var(--space-5, 20px);
    gap: var(--space-4, 16px);
}

/* ========================================
   Logo
   ======================================== */

.header-logo {
    flex-shrink: 0;
}

.header-logo a {
    display: block;
    text-decoration: none;
}

.header-logo img {
    height: 36px;
    width: auto;
}

/* ========================================
   Navigation (Right)
   ======================================== */

.header-nav {
    display: flex;
    align-items: center;
    gap: var(--space-3, 12px);
}

.header-nav-link {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: var(--space-2, 8px);
    color: var(--color-text-secondary, #666);
    text-decoration: none;
    border-radius: var(--radius-md, 8px);
    transition: all var(--transition-fast, 150ms ease);
}

.header-nav-link:hover {
    background: var(--color-gray-100, #f8f9fa);
    color: var(--color-primary, #0073ea);
}

.header-nav-link svg {
    width: 20px;
    height: 20px;
}

.header-nav-link span {
    display: none;
}

/* Desktop nav text visible - browse header at 640px */
@media (min-width: 640px) {
    .unified-header:not(.journey-mode) .header-nav-link {
        padding: var(--space-2, 8px) var(--space-3, 12px);
    }

    .unified-header:not(.journey-mode) .header-nav-link span {
        display: inline;
        margin-left: var(--space-2, 8px);
        font-size: var(--font-size-sm, 0.85rem);
    }
}

/* Journey header - show nav text at same breakpoint as browse */
@media (min-width: 640px) {
    .journey-mode .header-nav-link {
        padding: var(--space-2, 8px) var(--space-3, 12px);
    }

    .journey-mode .header-nav-link span {
        display: inline;
        margin-left: var(--space-2, 8px);
        font-size: var(--font-size-sm, 0.85rem);
    }
}

/* ========================================
   Mobile Menu Button
   ======================================== */

/* Theme toggle button */
.header-theme-toggle {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 32px;
    height: 32px;
    padding: 0;
    background: transparent;
    border: none;
    border-radius: var(--radius-md, 8px);
    color: var(--color-text-secondary, #666);
    cursor: pointer;
    transition: all var(--transition-fast, 150ms ease);
}

.header-theme-toggle:hover {
    background: var(--color-gray-100, #f8f9fa);
    color: var(--color-primary, #0073ea);
}

.header-menu-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    padding: 0;
    background: transparent;
    border: none;
    border-radius: var(--radius-md, 8px);
    color: var(--color-text-secondary, #666);
    cursor: pointer;
    transition: all var(--transition-fast, 150ms ease);
}

.header-menu-btn:hover {
    background: var(--color-gray-100, #f8f9fa);
    color: var(--color-primary, #0073ea);
}

.header-menu-btn svg {
    width: 24px;
    height: 24px;
}

@media (min-width: 768px) {
    .header-menu-btn {
        display: none;
    }
}

/* ========================================
   Mobile Header Adjustments
   ======================================== */

@media (max-width: 639px) {
    .header-main {
        padding: var(--space-2, 8px) var(--space-4, 16px);
    }

    .header-logo img {
        height: 30px;
    }

    .header-nav .header-nav-link:not(.header-nav-search) {
        display: none;
    }
}

/* ========================================
   Mobile Menu Overlay
   ======================================== */

.mobile-menu-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.5);
    z-index: var(--z-modal-backdrop, 400);
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-base, 200ms ease);
}

.mobile-menu-overlay.active {
    opacity: 1;
    visibility: visible;
}

.mobile-menu {
    position: fixed;
    top: 0;
    right: 0;
    bottom: 0;
    width: 280px;
    max-width: 85vw;
    background: var(--color-white, #ffffff);
    z-index: var(--z-modal, 500);
    transform: translateX(100%);
    transition: transform var(--transition-base, 200ms ease);
    overflow-y: auto;
}

.mobile-menu-overlay.active .mobile-menu {
    transform: translateX(0);
}

.mobile-menu-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--space-4, 16px);
    border-bottom: 1px solid var(--color-border, #e9ecef);
}

.mobile-menu-close {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    padding: 0;
    background: transparent;
    border: none;
    border-radius: var(--radius-md, 8px);
    color: var(--color-text-secondary, #666);
    cursor: pointer;
}

.mobile-menu-close:hover {
    background: var(--color-gray-100, #f8f9fa);
}

.mobile-menu-close svg {
    width: 24px;
    height: 24px;
}

.mobile-menu-progress {
    padding: var(--space-4, 16px);
    background: var(--color-gray-50, #fafafa);
    border-bottom: 1px solid var(--color-border, #e9ecef);
}

.mobile-menu-progress-label {
    font-size: var(--font-size-sm, 0.85rem);
    color: var(--color-text-secondary, #666);
    margin-bottom: var(--space-2, 8px);
}

.mobile-menu-progress-bar {
    height: 8px;
    background: var(--color-gray-200, #e9ecef);
    border-radius: var(--radius-full, 9999px);
    overflow: hidden;
    margin-bottom: var(--space-2, 8px);
}

.mobile-menu-progress-bar .global-progress-bar {
    height: 100%;
}

.mobile-menu-progress-text {
    font-size: var(--font-size-xs, 0.75rem);
    color: var(--color-text-muted, #999);
}

.mobile-menu-nav {
    padding: var(--space-4, 16px);
}

.mobile-menu-link {
    display: flex;
    align-items: center;
    padding: var(--space-3, 12px) var(--space-4, 16px);
    color: var(--color-text-primary, #333);
    text-decoration: none;
    border-radius: var(--radius-md, 8px);
    font-size: var(--font-size-base, 1rem);
    transition: all var(--transition-fast, 150ms ease);
}

.mobile-menu-link:hover {
    background: var(--color-gray-100, #f8f9fa);
    color: var(--color-primary, #0073ea);
}

.mobile-menu-link svg {
    width: 20px;
    height: 20px;
    margin-right: var(--space-3, 12px);
    opacity: 0.6;
}

.mobile-menu-link.active {
    background: var(--color-primary-light, #cce5ff);
    color: var(--color-primary, #0073ea);
}

.mobile-menu-divider {
    height: 1px;
    background: var(--color-border, #e9ecef);
    margin: var(--space-3, 12px) 0;
}

/* ========================================
   Continue Button (Header CTA)
   ======================================== */

.header-continue-btn {
    display: none;
    align-items: center;
    padding: var(--space-2, 8px) var(--space-4, 16px);
    background: var(--color-primary, #0073ea);
    color: var(--color-white, #ffffff);
    text-decoration: none;
    border-radius: var(--radius-full, 9999px);
    font-size: var(--font-size-sm, 0.85rem);
    font-weight: var(--font-weight-medium, 500);
    white-space: nowrap;
    transition: all var(--transition-fast, 150ms ease);
}

.header-continue-btn:hover {
    background: var(--color-primary-dark, #0056b3);
}

@media (min-width: 768px) {
    .header-continue-btn {
        display: inline-flex;
    }
}

/* ========================================
   Compact Header for Step Pages
   ======================================== */

.step-page .unified-header {
    /* Slightly more compact for step pages to maximize content */
}

.step-page .header-main {
    padding-top: var(--space-2, 8px);
    padding-bottom: var(--space-2, 8px);
}

/* ========================================
   Phase-colored accent line
   ======================================== */

.header-phase-accent {
    height: 3px;
    background: var(--current-phase-color, var(--color-primary, #0073ea));
    transition: background var(--transition-base, 200ms ease);
}

/* No accent on homepage */
.homepage .header-phase-accent {
    display: none;
}