/* header.css - استایل‌های هدر و منوی موبایل */

/* ============================
   HEADER
============================ */
.header {
    position: fixed;
    top: var(--space-lg);
    right: 0;
    left: 0;
    z-index: 99999;
    display: flex;
    justify-content: center;
    pointer-events: none;
}

.header__inner {
    pointer-events: auto;
    background: var(--surface-elevated);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-full);
    padding: var(--space-md) var(--space-2xl);
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--space-lg);
    max-width: 900px;
    width: 95%;
    box-shadow: var(--shadow-md);
    transition: all var(--transition);
}

.header__logo {
    font-weight: 900;
    font-size: 1.25rem;
    display: flex;
    align-items: center;
    gap: var(--space-xs);
}

.logo-mark {
    width: 2.5rem;
    height: 2.5rem;
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--primary);
}

.logo-mark svg {
    width: 100%;
    height: 100%;
}

.nav__list {
    display: flex;
    gap: var(--space-lg);
}

.nav__link {
    font-weight: 600;
    font-size: 0.95rem;
    color: var(--text-muted);
    position: relative;
    padding: var(--space-xs) 0;
    transition: color var(--transition);
}

.nav__link:hover,
.nav__link.active {
    color: var(--primary);
}

.nav__link::after {
    content: '';
    position: absolute;
    bottom: 0;
    right: 0;
    width: 0;
    height: 2px;
    background: var(--primary);
    border-radius: 1px;
    transition: width var(--transition);
}

.nav__link:hover::after,
.nav__link.active::after {
    width: 100%;
}

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

#work {
    display: none;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-xs);
    padding: 0.75rem 1.5rem;
    border-radius: var(--radius-full);
    font-weight: 700;
    font-size: 0.95rem;
    transition: all var(--transition);
    border: 2px solid transparent;
}

.btn--primary {
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    color: white;
    box-shadow: var(--shadow-sm);
}

.btn--primary:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-primary);
}

.btn--secondary {
    background: var(--surface);
    color: var(--text);
    border-color: var(--border);
}

.btn--secondary:hover {
    border-color: var(--primary);
    background: var(--surface-2);
}

.theme-toggle {
    width: 3rem;
    height: 3rem;
    border-radius: var(--radius-full);
    background: var(--surface);
    color: var(--text);
    display: flex;
    align-items: center;
    justify-content: center;
    border: 1px solid var(--border);
    transition: all var(--transition);
}

.theme-toggle:hover {
    background: var(--surface-2);
    transform: rotate(15deg);
}

.mobile-menu-btn {
    display: none;
    width: 3rem;
    height: 3rem;
    border-radius: var(--radius-full);
    background: var(--surface);
    color: var(--text);
    border: 1px solid var(--border);
}

/* ============================
   MOBILE MENU
============================ */
.mobile-menu {
    position: fixed;
    top: 0;
    right: 0;
    left: 0;
    bottom: 0;
    background: var(--bg);
    z-index: 9999;
    padding: calc(var(--header-height) + var(--space-lg)) var(--space-lg) var(--space-lg);
    transform: translateX(100%);
    transition: transform var(--transition);
    display: flex;
    flex-direction: column;
}

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

.mobile-nav {
    margin-top: var(--space-lg);
    display: flex;
    flex-direction: column;
    gap: var(--space-xs);
}

.mobile-nav__link {
    padding: var(--space-md);
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--text);
    border-radius: var(--radius-md);
    background: var(--surface);
    transition: all var(--transition);
}

.mobile-nav__link:hover,
.mobile-nav__link.active {
    background: var(--primary);
    color: white;
}

.mobile-menu__actions {
    margin-top: auto;
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
}

/* ============================
   RESPONSIVE DESIGN - HEADER
============================ */
@media (max-width: 768px) {
    .header__inner {
        padding: 0.75rem 1.5rem;
    }

    .nav {
        display: none;
    }

    .mobile-menu-btn {
        display: flex;
        align-items: center;
        justify-content: center;
    }

    @media (min-width: 768px) {
        #work {
            display: block;
        }
    }
}