/* ========================================
   AsterFund - Layout (Header/Footer/Nav)
   ======================================== */

/* ---- Header ---- */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: var(--header-height);
    background: var(--bg-header);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border-light);
    z-index: var(--z-header);
    transition: all var(--transition-base);
}

.header.is-scrolled {
    box-shadow: var(--shadow-sm);
}

.header__inner {
    max-width: var(--container-wide);
    margin: 0 auto;
    padding: 0 var(--space-6);
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.header__logo {
    flex-shrink: 0;
    display: flex;
    align-items: center;
}

.header__logo img,
.header__logo svg {
    height: 32px;
    width: auto;
}

/* ---- Nav ---- */
.nav {
    display: flex;
    align-items: center;
    gap: var(--space-1);
}

.nav__item {
    position: relative;
}

.nav__link {
    display: flex;
    align-items: center;
    gap: var(--space-1);
    padding: 8px 14px;
    font-size: var(--text-sm);
    font-weight: 500;
    color: var(--text-secondary);
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
    white-space: nowrap;
}

.nav__link:hover,
.nav__link.active {
    color: var(--text-primary);
    background: var(--bg-surface);
}

.nav__link.active {
    color: var(--color-accent);
}

/* Dropdown arrow */
.nav__link--has-sub::after {
    content: '';
    width: 0;
    height: 0;
    border-left: 4px solid transparent;
    border-right: 4px solid transparent;
    border-top: 4px solid currentColor;
    transition: transform var(--transition-fast);
}

.nav__item:hover .nav__link--has-sub::after {
    transform: rotate(180deg);
}

/* Dropdown */
.nav__dropdown {
    position: absolute;
    top: 100%;
    left: 0;
    min-width: 220px;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: var(--space-2);
    box-shadow: var(--shadow-xl);
    opacity: 0;
    visibility: hidden;
    transform: translateY(8px);
    transition: all var(--transition-base);
    z-index: var(--z-dropdown);
}

.nav__item:hover .nav__dropdown {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.nav__dropdown a {
    display: block;
    padding: 10px 14px;
    font-size: var(--text-sm);
    color: var(--text-secondary);
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
}

.nav__dropdown a:hover {
    background: var(--bg-surface);
    color: var(--color-accent);
}

/* Header actions */
.header__actions {
    display: flex;
    align-items: center;
    gap: var(--space-3);
}

/* Theme toggle */
.theme-toggle {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-md);
    color: var(--text-secondary);
    transition: all var(--transition-fast);
    cursor: pointer;
    background: none;
    border: none;
    font-size: 18px;
}

.theme-toggle:hover {
    background: var(--bg-surface);
    color: var(--text-primary);
}

/* Mobile menu toggle */
.mobile-toggle {
    display: none;
    width: 40px;
    height: 40px;
    align-items: center;
    justify-content: center;
    background: none;
    border: none;
    cursor: pointer;
    flex-direction: column;
    gap: 5px;
    padding: 8px;
}

.mobile-toggle span {
    display: block;
    width: 22px;
    height: 2px;
    background: var(--text-primary);
    border-radius: 2px;
    transition: all var(--transition-base);
}

.mobile-toggle.is-active span:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
}
.mobile-toggle.is-active span:nth-child(2) {
    opacity: 0;
}
.mobile-toggle.is-active span:nth-child(3) {
    transform: rotate(-45deg) translate(5px, -5px);
}

/* ---- Main Content ---- */
.main {
    min-height: calc(100vh - var(--header-height));
    padding-top: var(--header-height);
}

/* ---- Page Header (Breadcrumb + Title) ---- */
.page-header {
    background: var(--bg-surface);
    border-bottom: 1px solid var(--border-light);
    padding: var(--space-10) 0 var(--space-12);
}

.page-header__title {
    font-size: var(--text-4xl);
    margin-bottom: var(--space-3);
}

.page-header__desc {
    font-size: var(--text-lg);
    color: var(--text-secondary);
    max-width: 600px;
}

/* ---- Footer ---- */
.footer {
    background: var(--bg-footer);
    color: var(--color-gray-400);
    padding: var(--space-16) 0 0;
}

.footer__grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr 1fr;
    gap: var(--space-10);
    padding-bottom: var(--space-12);
    border-bottom: 1px solid rgba(255,255,255,0.08);
}

.footer__brand {
    padding-right: var(--space-8);
}

.footer__brand img {
    height: 30px;
    margin-bottom: var(--space-4);
    filter: brightness(0) invert(1);
}

.footer__brand p {
    font-size: var(--text-sm);
    color: var(--color-gray-400);
    line-height: var(--leading-relaxed);
    margin-bottom: var(--space-4);
}

.footer__social {
    display: flex;
    gap: var(--space-3);
}

.footer__social a {
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-md);
    background: rgba(255,255,255,0.06);
    color: var(--color-gray-400);
    transition: all var(--transition-fast);
    font-size: 14px;
}

.footer__social a:hover {
    background: var(--color-accent);
    color: var(--color-primary);
}

.footer__heading {
    font-size: var(--text-sm);
    font-weight: 700;
    color: var(--color-white);
    text-transform: uppercase;
    letter-spacing: 0.08em;
    margin-bottom: var(--space-5);
}

.footer__links {
    display: flex;
    flex-direction: column;
    gap: var(--space-3);
}

.footer__links a {
    font-size: var(--text-sm);
    color: var(--color-gray-400);
    transition: color var(--transition-fast);
}

.footer__links a:hover {
    color: var(--color-accent);
}

.footer__bottom {
    padding: var(--space-6) 0;
    display: flex;
    align-items: center;
    justify-content: space-between;
    font-size: var(--text-xs);
    color: var(--color-gray-500);
}

.footer__legal {
    display: flex;
    gap: var(--space-4);
}

.footer__legal a {
    color: var(--color-gray-500);
}

.footer__legal a:hover {
    color: var(--color-accent);
}

/* ---- Sidebar Layout ---- */
.layout-sidebar {
    display: grid;
    grid-template-columns: 260px 1fr;
    gap: var(--space-8);
    max-width: var(--container-max);
    margin: 0 auto;
    padding: var(--space-10) var(--space-6);
}

.sidebar {
    position: sticky;
    top: calc(var(--header-height) + var(--space-6));
    align-self: start;
}

.sidebar__nav {
    display: flex;
    flex-direction: column;
    gap: var(--space-1);
}

.sidebar__link {
    display: block;
    padding: 10px 16px;
    font-size: var(--text-sm);
    font-weight: 500;
    color: var(--text-secondary);
    border-radius: var(--radius-md);
    border-left: 3px solid transparent;
    transition: all var(--transition-fast);
}

.sidebar__link:hover {
    color: var(--text-primary);
    background: var(--bg-surface);
}

.sidebar__link.active {
    color: var(--color-accent);
    background: rgba(201,169,110,0.08);
    border-left-color: var(--color-accent);
}