/* ============================================
   MODERN PROFESSIONAL HEADER
   ============================================ */

/* Top Bar - Temiz ve Profesyonel */
.top-bar {
    background: #0f172a;
    color: #ffffff;
    padding: 0.625rem 0;
    font-size: 0.875rem;
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.top-bar .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1rem;
}

.top-bar-left,
.top-bar-right {
    display: flex;
    align-items: center;
    gap: 2rem;
}

.top-bar a {
    color: #ffffff;
    opacity: 0.92;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    transition: all 0.2s ease;
    font-weight: 400;
}

.top-bar a:hover {
    opacity: 1;
    color: #f97316;
}

.top-bar a i {
    font-size: 0.875rem;
}

.social-icons {
    display: flex;
    gap: 0.5rem;
    align-items: center;
}

.social-icons a {
    width: 28px;
    height: 28px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 4px;
    background: rgba(255, 255, 255, 0.1);
    transition: all 0.3s ease;
    font-size: 0.75rem;
}

.social-icons a:hover {
    background: #f97316;
    transform: translateY(-2px);
}

/* Main Navigation - Profesyonel */
.header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    background: #ffffff;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.06);
}

.main-nav {
    background: #ffffff;
    padding: 0;
}

.nav-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0.875rem 1rem;
}

.logo img {
    height: 45px;
    width: auto;
    display: block;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 0;
    align-items: center;
    margin: 0;
    padding: 0;
}

.nav-menu > li {
    position: relative;
    margin: 0 0.125rem;
}

.nav-menu > li > a,
.nav-menu > li > .nav-link {
    color: #1f2937;
    font-weight: 500;
    padding: 0.75rem 1.125rem;
    border-radius: 6px;
    transition: all 0.2s ease;
    display: inline-flex;
    align-items: center;
    gap: 0.375rem;
    font-size: 0.9375rem;
    white-space: nowrap;
}

.nav-menu > li > a:hover,
.nav-menu > li > .nav-link:hover {
    color: #1e3a8a;
    background: #f3f4f6;
}

.nav-menu > li > a.active,
.nav-menu > li > .nav-link.active {
    color: #ffffff;
    background: #1e3a8a;
}

/* Dropdown Modern */
.nav-menu .dropdown > a::after,
.nav-menu .dropdown > .dropdown-toggle::after {
    content: '\f107';
    font-family: 'Font Awesome 6 Free';
    font-weight: 900;
    margin-left: 0.25rem;
    font-size: 0.7rem;
    transition: transform 0.2s ease;
}

.nav-menu .dropdown:hover > a::after,
.nav-menu .dropdown:hover > .dropdown-toggle::after {
    transform: rotate(180deg);
}

.dropdown-menu {
    position: absolute;
    top: calc(100% + 0.5rem);
    left: 0;
    background: #ffffff;
    min-width: 260px;
    padding: 0.5rem;
    border-radius: 8px;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.12);
    opacity: 0;
    visibility: hidden;
    transform: translateY(-8px);
    transition: all 0.25s ease;
    z-index: 1000;
}

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

.dropdown-menu li {
    list-style: none;
    margin: 0;
}

.dropdown-item {
    display: block;
    padding: 0.75rem 1rem;
    color: #4b5563;
    transition: all 0.15s ease;
    font-size: 0.9rem;
    border-radius: 6px;
    font-weight: 450;
}

.dropdown-item:hover {
    background: #f3f4f6;
    color: #1e3a8a;
    padding-left: 1.25rem;
}

.dropdown-item.active {
    background: #e0f2fe;
    color: #1e3a8a;
    font-weight: 600;
}

/* Mobile Menu Toggle */
.menu-toggle {
    display: none;
    flex-direction: column;
    gap: 4px;
    cursor: pointer;
    padding: 0.5rem;
}

.menu-toggle span {
    width: 24px;
    height: 2.5px;
    background: #1e3a8a;
    border-radius: 2px;
    transition: all 0.3s ease;
}

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

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

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

/* Responsive */
@media (max-width: 992px) {
    .top-bar-left,
    .top-bar-right {
        gap: 1rem;
        font-size: 0.8125rem;
    }

    .social-icons a {
        width: 26px;
        height: 26px;
        font-size: 0.7rem;
    }

    .menu-toggle {
        display: flex;
    }

    .nav-menu {
        position: fixed;
        top: 110px;
        left: -100%;
        width: 100%;
        max-width: 100%;
        height: calc(100vh - 110px);
        background: #ffffff;
        flex-direction: column;
        padding: 3rem 1rem 1.5rem;
        box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
        transition: left 0.3s ease;
        overflow-y: auto;
        gap: 0.5rem;
    }

    .nav-menu.active {
        left: 0;
    }

    .nav-menu > li {
        width: 100%;
        margin: 0;
    }

    .nav-menu > li > a,
    .nav-menu > li > .nav-link {
        width: 100%;
        justify-content: space-between;
        padding: 1rem 1.25rem;
        font-size: 1rem;
    }

    .dropdown-menu {
        position: static;
        opacity: 1;
        visibility: visible;
        transform: none;
        box-shadow: none;
        margin-top: 0.5rem;
        padding-left: 1rem;
        border-left: 2px solid #e5e7eb;
    }
}

@media (max-width: 640px) {
    .top-bar .container {
        flex-direction: column;
        gap: 0.5rem;
        text-align: center;
        padding: 0.75rem 1rem;
    }

    .top-bar-left,
    .top-bar-right {
        width: 100%;
        justify-content: center;
    }

    .social-icons {
        margin-top: 0.25rem;
    }
}