/**
 * Kiki Academy Header Component
 * Universal navigation bar for all pages
 */

/* ═══════════════════════════════════════════════════════════════
   HEADER CONTAINER
   ═══════════════════════════════════════════════════════════════ */

.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: var(--z-fixed);
    height: var(--header-height);
    background: var(--glass-bg);
    backdrop-filter: var(--glass-blur);
    border-bottom: 1px solid var(--glass-border);
    transition: all var(--duration-normal) var(--ease-out);
}

/* Scrolled state - more compact */
.header--scrolled {
    height: var(--header-height-scrolled);
    background: rgba(253, 248, 245, 0.95);
    box-shadow: var(--shadow-sm);
}

.header__container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 100%;
    max-width: var(--container-2xl);
    margin: 0 auto;
    padding: 0 var(--space-4);
}

@media (min-width: 768px) {
    .header__container {
        padding: 0 var(--space-6);
    }
}

@media (min-width: 1024px) {
    .header__container {
        padding: 0 var(--space-8);
    }
}

/* ═══════════════════════════════════════════════════════════════
   LOGO
   ═══════════════════════════════════════════════════════════════ */

.header__logo {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    flex-shrink: 0;
}

.header__logo-image {
    width: 40px;
    height: 40px;
    transition: transform var(--duration-normal) var(--ease-out);
}

.header__logo:hover .header__logo-image {
    transform: scale(1.05) rotate(-5deg);
}

.header__logo-text {
    display: flex;
    flex-direction: column;
}

.header__logo-title {
    font-family: var(--font-heading);
    font-size: var(--text-lg);
    font-weight: var(--weight-semibold);
    color: var(--kiki-obsidian);
    line-height: 1.1;
    letter-spacing: var(--tracking-tight);
}

.header__logo-subtitle {
    font-size: var(--text-xs);
    color: var(--kiki-rose);
    letter-spacing: var(--tracking-wider);
    text-transform: uppercase;
}

/* Hide subtitle on mobile */
@media (max-width: 640px) {
    .header__logo-text {
        display: none;
    }
}

/* ═══════════════════════════════════════════════════════════════
   DESKTOP NAVIGATION
   ═══════════════════════════════════════════════════════════════ */

.header__nav {
    display: none;
}

@media (min-width: 1024px) {
    .header__nav {
        display: flex;
        align-items: center;
        gap: var(--space-1);
    }
}

.header__nav-item {
    position: relative;
}

.header__nav-link {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    padding: var(--space-2) var(--space-4);
    font-size: var(--text-sm);
    font-weight: var(--weight-medium);
    color: var(--kiki-charcoal);
    border-radius: var(--radius-lg);
    transition: all var(--duration-fast) var(--ease-out);
}

.header__nav-link:hover {
    color: var(--kiki-rose-dark);
    background: var(--kiki-silk);
}

.header__nav-link--active {
    color: var(--kiki-rose-dark);
    background: var(--virtue-elegance-glow);
}

.header__nav-link svg {
    width: 18px;
    height: 18px;
    opacity: 0.7;
}

/* Navigation dropdown indicator */
.header__nav-link--dropdown::after {
    content: "";
    width: 0;
    height: 0;
    border-left: 4px solid transparent;
    border-right: 4px solid transparent;
    border-top: 4px solid currentColor;
    margin-left: var(--space-1);
    transition: transform var(--duration-fast) var(--ease-out);
}

.header__nav-item:hover .header__nav-link--dropdown::after {
    transform: rotate(180deg);
}

/* ═══════════════════════════════════════════════════════════════
   DROPDOWN MENU
   ═══════════════════════════════════════════════════════════════ */

.header__dropdown {
    position: absolute;
    top: 100%;
    left: 50%;
    transform: translateX(-50%) translateY(8px);
    min-width: 220px;
    background: var(--kiki-white);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-xl);
    padding: var(--space-2);
    opacity: 0;
    visibility: hidden;
    transition: all var(--duration-fast) var(--ease-out);
}

.header__nav-item:hover .header__dropdown {
    opacity: 1;
    visibility: visible;
    transform: translateX(-50%) translateY(0);
}

.header__dropdown-link {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    padding: var(--space-3) var(--space-4);
    font-size: var(--text-sm);
    color: var(--kiki-charcoal);
    border-radius: var(--radius-lg);
    transition: all var(--duration-fast) var(--ease-out);
}

.header__dropdown-link:hover {
    background: var(--kiki-silk);
    color: var(--kiki-rose-dark);
}

.header__dropdown-link svg {
    width: 18px;
    height: 18px;
    opacity: 0.6;
}

.header__dropdown-divider {
    height: 1px;
    background: var(--kiki-silk);
    margin: var(--space-2) 0;
}

/* Campus dropdown with color indicators */
.header__dropdown-link--campus {
    position: relative;
    padding-left: var(--space-8);
}

.header__dropdown-link--campus::before {
    content: "";
    position: absolute;
    left: var(--space-3);
    top: 50%;
    transform: translateY(-50%);
    width: 8px;
    height: 8px;
    border-radius: var(--radius-full);
}

.header__dropdown-link--elegance::before { background: var(--virtue-elegance); }
.header__dropdown-link--etiquette::before { background: var(--virtue-etiquette); }
.header__dropdown-link--eminence::before { background: var(--virtue-eminence); }
.header__dropdown-link--energy::before { background: var(--virtue-energy); }
.header__dropdown-link--elation::before { background: var(--virtue-elation); }

/* ═══════════════════════════════════════════════════════════════
   HEADER ACTIONS (Right side)
   ═══════════════════════════════════════════════════════════════ */

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

/* Search button */
.header__search-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    border-radius: var(--radius-full);
    color: var(--kiki-charcoal);
    transition: all var(--duration-fast) var(--ease-out);
}

.header__search-btn:hover {
    background: var(--kiki-silk);
    color: var(--kiki-rose);
}

.header__search-btn svg {
    width: 20px;
    height: 20px;
}

/* Theme toggle button */
.header__theme-toggle {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    border-radius: var(--radius-full);
    color: var(--kiki-charcoal);
    transition: all var(--duration-fast) var(--ease-out);
    position: relative;
}

.header__theme-toggle:hover {
    background: var(--kiki-silk);
    color: var(--kiki-rose);
}

.header__theme-icon {
    width: 20px;
    height: 20px;
    transition: all var(--duration-normal) var(--ease-out);
}

/* Show sun icon by default (light mode) */
.header__theme-icon--light {
    display: block;
}

.header__theme-icon--dark {
    display: none;
}

/* When dark mode is active, show moon icon */
[data-theme="dark"] .header__theme-icon--light {
    display: none;
}

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

[data-theme="dark"] .header__theme-toggle:hover {
    background: var(--kiki-pearl);
    color: var(--kiki-gold);
}

/* User profile button */
.header__profile {
    position: relative;
}

.header__profile-btn {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    padding: var(--space-1) var(--space-3) var(--space-1) var(--space-1);
    background: var(--kiki-silk);
    border-radius: var(--radius-full);
    transition: all var(--duration-fast) var(--ease-out);
}

.header__profile-btn:hover {
    background: var(--kiki-taupe);
}

.header__profile-avatar {
    width: 32px;
    height: 32px;
    border-radius: var(--radius-full);
    background: linear-gradient(135deg, var(--kiki-rose-light) 0%, var(--kiki-rose) 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--kiki-white);
    font-weight: var(--weight-semibold);
    font-size: var(--text-sm);
}

.header__profile-name {
    font-size: var(--text-sm);
    font-weight: var(--weight-medium);
    color: var(--kiki-charcoal);
    display: none;
}

@media (min-width: 768px) {
    .header__profile-name {
        display: block;
    }
}

/* Profile dropdown */
.header__profile-dropdown {
    position: absolute;
    top: 100%;
    right: 0;
    transform: translateY(8px);
    min-width: 200px;
    background: var(--kiki-white);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-xl);
    padding: var(--space-2);
    opacity: 0;
    visibility: hidden;
    transition: all var(--duration-fast) var(--ease-out);
}

.header__profile:hover .header__profile-dropdown {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

/* CTA Button */
.header__cta {
    display: none;
}

@media (min-width: 768px) {
    .header__cta {
        display: flex;
    }
}

/* ═══════════════════════════════════════════════════════════════
   MOBILE MENU TOGGLE
   ═══════════════════════════════════════════════════════════════ */

.header__menu-toggle {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 44px;
    height: 44px;
    border-radius: var(--radius-lg);
    transition: all var(--duration-fast) var(--ease-out);
}

.header__menu-toggle:hover {
    background: var(--kiki-silk);
}

@media (min-width: 1024px) {
    .header__menu-toggle {
        display: none;
    }
}

/* Hamburger icon */
.header__hamburger {
    position: relative;
    width: 24px;
    height: 18px;
}

.header__hamburger span {
    position: absolute;
    left: 0;
    width: 100%;
    height: 2px;
    background: var(--kiki-charcoal);
    border-radius: var(--radius-full);
    transition: all var(--duration-normal) var(--ease-out);
}

.header__hamburger span:nth-child(1) { top: 0; }
.header__hamburger span:nth-child(2) { top: 8px; }
.header__hamburger span:nth-child(3) { bottom: 0; }

/* Open state */
.header__menu-toggle--open .header__hamburger span:nth-child(1) {
    top: 8px;
    transform: rotate(45deg);
}

.header__menu-toggle--open .header__hamburger span:nth-child(2) {
    opacity: 0;
}

.header__menu-toggle--open .header__hamburger span:nth-child(3) {
    bottom: 8px;
    transform: rotate(-45deg);
}

/* ═══════════════════════════════════════════════════════════════
   MOBILE NAVIGATION PANEL
   ═══════════════════════════════════════════════════════════════ */

.mobile-nav {
    position: fixed;
    top: var(--header-height);
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--kiki-cream);
    z-index: var(--z-modal);
    overflow-y: auto;
    transform: translateX(100%);
    transition: transform var(--duration-normal) var(--ease-out);
}

.mobile-nav--open {
    transform: translateX(0);
}

@media (min-width: 1024px) {
    .mobile-nav {
        display: none;
    }
}

.mobile-nav__container {
    padding: var(--space-6);
    display: flex;
    flex-direction: column;
    gap: var(--space-6);
}

/* Mobile nav links */
.mobile-nav__section {
    display: flex;
    flex-direction: column;
}

.mobile-nav__title {
    font-size: var(--text-xs);
    font-weight: var(--weight-semibold);
    letter-spacing: var(--tracking-wider);
    text-transform: uppercase;
    color: var(--kiki-taupe);
    margin-bottom: var(--space-3);
}

.mobile-nav__link {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    padding: var(--space-3) 0;
    font-size: var(--text-base);
    font-weight: var(--weight-medium);
    color: var(--kiki-charcoal);
    border-bottom: 1px solid var(--kiki-silk);
    transition: color var(--duration-fast) var(--ease-out);
}

.mobile-nav__link:hover {
    color: var(--kiki-rose);
}

.mobile-nav__link svg {
    width: 20px;
    height: 20px;
    opacity: 0.6;
}

/* Campus links with color dots */
.mobile-nav__link--campus {
    position: relative;
    padding-left: var(--space-6);
}

.mobile-nav__link--campus::before {
    content: "";
    position: absolute;
    left: 0;
    top: 50%;
    transform: translateY(-50%);
    width: 10px;
    height: 10px;
    border-radius: var(--radius-full);
}

.mobile-nav__link--elegance::before { background: var(--virtue-elegance); }
.mobile-nav__link--etiquette::before { background: var(--virtue-etiquette); }
.mobile-nav__link--eminence::before { background: var(--virtue-eminence); }
.mobile-nav__link--energy::before { background: var(--virtue-energy); }
.mobile-nav__link--elation::before { background: var(--virtue-elation); }

/* Mobile CTA */
.mobile-nav__cta {
    margin-top: var(--space-4);
}

/* ═══════════════════════════════════════════════════════════════
   HEADER SPACER (for fixed header)
   ═══════════════════════════════════════════════════════════════ */

.header-spacer {
    height: var(--header-height);
}