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

.header {
    background: linear-gradient(135deg, #14497c 0%, #1a5590 100%);
    box-shadow: var(--shadow-md);
    position: sticky;
    top: 0;
    z-index: var(--z-sticky);
    width: 100%;
    overflow-x: hidden;
}

/* Top Bar with EU Funding Message */
.header__top-bar {
    background: rgba(0, 0, 0, 0.1);
    padding: var(--spacing-xs) 0;
    font-size: var(--font-size-sm);
    color: var(--color-white);
    --header-flag-width: 50px;
    --header-flag-height: 36px;
}

    .header__top-bar .container {
        display: flex;
        flex-direction: column;
        justify-content: center;
        align-items: center;
        gap: var(--spacing-xs);
    }

.header__flags {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
}

.header__flag {
    width: var(--header-flag-width);
    height: var(--header-flag-height);
    object-fit: contain;
    border: 1px solid rgba(255, 255, 255, 0.3);
}

/* Main Header */
.header__main {
    padding: var(--spacing-md) 0;
}

.header__container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    width: 100%;
    box-sizing: border-box;
}

/* Logo Section */
.header__logo-section {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    flex-shrink: 1;
    min-width: 0;
}

.header__logo {
    height: 50px;
    width: auto;
    object-fit: contain;
    transition: transform var(--transition-fast);
}

    .header__logo:hover {
        transform: scale(1.05);
    }

.header__title {
    font-size: var(--font-size-2xl);
    font-weight: var(--font-weight-bold);
    color: var(--color-white);
    letter-spacing: 1px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    text-decoration: none;
    transition: color var(--transition-fast), transform var(--transition-fast);
}

    .header__title:hover,
    .header__title:focus {
        color: #e6f2ff;
        transform: translateY(-1px);
    }

/* Navigation */
.header__nav {
    flex: 1;
    display: flex;
    justify-content: center;
}

.nav {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    list-style: none;
}

.nav__item {
    position: relative;
}

.nav__link {
    display: block;
    padding: var(--spacing-sm) var(--spacing-md);
    color: var(--color-white) !important;
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-medium);
    text-decoration: none;
    border-radius: 4px;
    transition: all var(--transition-fast);
    position: relative;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

    .nav__link:link,
    .nav__link:visited {
        color: var(--color-white) !important;
    }

    .nav__link:hover {
        background: rgba(255, 255, 255, 0.1);
        color: var(--color-white) !important;
        transform: translateY(-1px);
    }

    .nav__link:active,
    .nav__link:focus {
        color: var(--color-white) !important;
    }

    .nav__link::after {
        content: '';
        position: absolute;
        bottom: 0;
        left: 50%;
        width: 0;
        height: 2px;
        background: var(--color-white);
        transform: translateX(-50%);
        transition: width var(--transition-fast);
    }

    .nav__link:hover::after,
    .nav__link--active::after {
        width: 80%;
    }

.nav__link--active {
    background: rgba(255, 255, 255, 0.15);
    color: var(--color-white) !important;
}

/* Language Switcher */
.header__actions {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

.lang-buttons {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
}

.lang-btn {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.2);
    color: var(--color-white);
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-semibold);
    cursor: pointer;
    padding: var(--spacing-xs) var(--spacing-md);
    border-radius: 6px;
    transition: all var(--transition-fast);
    opacity: 0.8;
}

    .lang-btn i {
        font-size: var(--font-size-base);
    }

    .lang-btn:hover {
        opacity: 1;
        background: rgba(255, 255, 255, 0.15);
        border-color: rgba(255, 255, 255, 0.3);
        transform: translateY(-1px);
    }

    .lang-btn.active {
        opacity: 1;
        background: rgba(255, 255, 255, 0.25);
        border-color: rgba(255, 255, 255, 0.4);
        font-weight: var(--font-weight-bold);
    }

/* Mobile Menu Toggle */
.header__menu-toggle {
    display: none;
    background: none;
    border: none;
    color: var(--color-white);
    font-size: var(--font-size-xl);
    cursor: pointer;
    padding: var(--spacing-sm);
}

    .header__menu-toggle span {
        display: block;
        width: 25px;
        height: 3px;
        background: var(--color-white);
        margin: 5px 0;
        transition: all var(--transition-fast);
    }

.header__nav-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.45);
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
    transition: opacity var(--transition-base), visibility var(--transition-base);
    z-index: 1000;
}

.header__nav-overlay--visible {
    opacity: 1;
    visibility: visible;
    pointer-events: auto;
}

/* ========================================
   Mobile Responsive Styles
   ======================================== */

@media (max-width: 1024px) {
    .header__nav {
        display: flex;
        position: fixed;
        top: 0;
        right: 0;
        height: 100vh;
        width: min(320px, 80vw);
        background: var(--color-primary);
        box-shadow: var(--shadow-xl);
        max-width: 100vw;
        overflow-y: auto;
        overflow-x: hidden;
        padding: calc(var(--spacing-2xl) + var(--header-height-mobile)) var(--spacing-xl) var(--spacing-2xl);
        flex-direction: column;
        align-items: stretch;
        gap: var(--spacing-sm);
        transform: translateX(110%);
        opacity: 0;
        visibility: hidden;
        pointer-events: none;
        transition: transform var(--transition-base), opacity var(--transition-base), visibility var(--transition-base);
        z-index: 1100;
    }

    .header__nav--open {
        transform: translateX(0);
        opacity: 1;
        visibility: visible;
        pointer-events: auto;
    }

    .nav {
        flex-direction: column;
        padding: 0;
        gap: 0;
    }

    .nav__item {
        width: 100%;
    }

    .nav__link {
        padding: var(--spacing-md) 0;
        border-bottom: 1px solid rgba(255, 255, 255, 0.1);
        color: var(--color-white) !important;
    }

        .nav__link:hover,
        .nav__link:active,
        .nav__link:focus {
            color: var(--color-white) !important;
        }

        .nav__link::after {
            display: none;
        }

    .header__menu-toggle {
        display: block;
    }

    .header__container {
        position: static;
    }

    .header__title {
        font-size: var(--font-size-xl);
    }

    .header__logo {
        height: 40px;
    }
}

@media (max-width: 480px) {
    .header__top-bar {
        font-size: var(--font-size-xs);
        padding: var(--spacing-xs);
    }

        .header__top-bar .container {
            padding-left: var(--spacing-sm);
            padding-right: var(--spacing-sm);
        }

    .header__flag {
        width: 24px;
        height: 16px;
    }

    .header__title {
        display: none;
    }

    .header__logo {
        height: 35px;
    }

    .lang-buttons {
        gap: 4px;
    }

    .lang-btn {
        font-size: var(--font-size-xs);
        padding: 6px 10px;
    }

        .lang-btn i {
            font-size: var(--font-size-sm);
        }

    .header__main {
        padding: var(--spacing-sm) 0;
    }
}

/* ========================================
   Hamburger Animation
   ======================================== */

.header__menu-toggle--active span:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
}

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

.header__menu-toggle--active span:nth-child(3) {
    transform: rotate(-45deg) translate(7px, -6px);
}

.header__funding-message {
    font-size: 10px;
    text-align: center;
    max-width: calc((var(--header-flag-width) * 2) + var(--spacing-xs));
    width: fit-content;
    margin: 0 auto;
    padding-top: var(--spacing-xs);
}