/* ===== Header Component ===== */

/* Base Header Styles */
.common-header {
    background: var(--color-white);
    border-bottom: 1px solid var(--color-border);
    backdrop-filter: blur(10px);
    background: rgba(254, 254, 254, 0.95);
    position: relative;
    width: 100%;
    padding: var(--spacing-sm) var(--spacing-md);
    z-index: var(--z-header);
    min-height: 4rem;
    box-sizing: border-box;
}

.header-row {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
}

/* Hamburger Menu */
.hamburger-wrapper {
    position: relative;
}

.hamburger {
    font-family: var(--font-primary);
    font-size: clamp(1.625rem, 2.6vw, 2.275rem);
    font-weight: 400;
    color: var(--color-text-primary);
    transition: var(--transition-fast);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    z-index: var(--z-hamburger);
    transition: var(--transition-fast);
}

.hamburger:hover {
    color: var(--color-text-secondary);
}

/* Dropdown Menu */
.dropdown-menu {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    padding: var(--spacing-xs) 0;
    min-width: 12rem;
    background: var(--color-white);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-large);
    backdrop-filter: blur(10px);
    overflow: visible;
    z-index: 999;
}

.dropdown-menu li a {
    display: block;
    font-family: var(--font-medium);
    padding: var(--spacing-sm) var(--spacing-md);
    font-size: var(--text-sm);
    font-weight: 500;
    color: var(--color-text-primary);
    text-transform: none;
    letter-spacing: 0.02em;
    transition: var(--transition-fast);
    border-bottom: 1px solid var(--color-border);
    white-space: nowrap;
}

.dropdown-menu li a:hover {
    background: var(--color-accent);
    color: var(--color-text-primary);
    transform: translateX(2px);
}

/* Submenu Styles */
.has-submenu {
    position: relative;
}

.has-submenu:hover > .submenu {
    display: block;
}

.submenu {
    display: none;
    position: absolute;
    left: 100%;
    top: 0;
    padding: var(--spacing-xs) 0;
    min-width: 9rem;
    background: var(--color-white);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-medium);
    backdrop-filter: blur(8px);
    z-index: 9999;
}

.submenu li a {
    font-family: var(--font-primary);
    padding: var(--spacing-2xs) var(--spacing-sm);
    font-size: var(--text-xs);
    font-weight: 400;
    color: var(--color-text-secondary);
    letter-spacing: 0.01em;
    transition: var(--transition-fast);
}

.submenu li a:hover {
    background: var(--color-accent);
    color: var(--color-text-primary);
}

/* Third Level Submenu */
.submenu .has-submenu:hover > .submenu {
    display: block;
}

.submenu .submenu {
    left: 100%;
    top: 0;
}

/* Corner Title */
.corner-title {
    font-family: var(--font-medium);
    font-size: clamp(0.91rem, 1.95vw, 1.3rem);
    font-weight: 500;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    color: var(--color-text-muted);
    max-width: 130px;
    overflow: hidden;
    white-space: normal;
    line-height: 0.95;
    position: absolute;
    top: 0.5rem;
    right: 1rem;
    text-align: right;
    z-index: 10;
    text-decoration: none;
    transition: var(--transition-fast);
    height: auto;
    box-sizing: border-box;
}

.corner-title:hover {
    opacity: 0.7;
}

/* Responsive Styles */
@media (max-width: 48rem) {
    .common-header {
        padding: var(--spacing-xs) var(--spacing-sm);
        min-height: 3.5rem;
    }

    .header-row {
        align-items: center;
        gap: 1rem;
    }

    .hamburger {
        font-size: 1.8rem !important;
    }

    .corner-title {
        font-size: clamp(0.8rem, 1.5vw, 0.95rem) !important;
        max-width: 110px;
        top: 50%;
        transform: translateY(-50%);
        right: var(--spacing-sm);
        line-height: 0.95;
    }

    .dropdown-menu {
        min-width: 10rem;
    }

    .dropdown-menu li a {
        font-size: 0.875rem;
        padding: var(--spacing-xs) var(--spacing-sm);
    }
}

@media (max-width: 30rem) {
    .common-header {
        padding: 0.5rem;
        min-height: 3rem;
    }

    .hamburger {
        font-size: 1.5rem !important;
    }

    .corner-title {
        font-size: clamp(0.7rem, 1.2vw, 0.85rem) !important;
        max-width: 90px;
        line-height: 0.9;
    }

    .dropdown-menu {
        min-width: 9rem;
        left: 0;
        right: auto;
    }

    .dropdown-menu li a {
        font-size: 0.8rem;
        padding: 0.4rem 0.8rem;
    }
}