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

    padding: 12px 18px;
    background: rgba(20,20,20,0.96);
    color: white;

    backdrop-filter: blur(10px);
}

.header-left {
    display: flex;
    align-items: center;
    gap: 10px;
}

.logo {
    height: 36px;
    width: 36px;
    border-radius: 10px;
}

.title {
    font-size: 18px;
    font-weight: 600;
}

/* RIGHT */
.header-right {
    display: flex;
    align-items: center;
    gap: 12px;
}

/* =========================
   DESKTOP NAV
   ========================= */
.desktop-nav {
    display: flex;
    align-items: center;
    gap: 10px;
}

.nav-btn {
    background: rgba(255,255,255,0.08);
    color: white;

    border: 1px solid rgba(255,255,255,0.12);
    border-radius: 12px;

    padding: 8px 14px;
    font-size: 14px;

    cursor: pointer;
    transition: all 0.2s ease;
}

.nav-btn svg,
.dropdown-item svg {
    width: 18px;
    height: 18px;

    margin-right: 8px;

    stroke-width: 2;
    opacity: 0.9;
}

.nav-btn:hover svg,
.dropdown-item:hover svg {
    opacity: 1;
    transform: scale(1.05);
}

.nav-btn,
.dropdown-item {
    display: flex;
    align-items: center;
}

.nav-btn:hover {
    background: rgba(255,255,255,0.16);
    border-color: rgba(255,255,255,0.25);
}

.nav-btn:active {
    transform: scale(0.96);
}

.nav-btn.warning {
    background: rgba(246, 147, 85, 0.12);
}

/* =========================
   HAMBURGER MENU (mobile only)
   ========================= */
.hamburger {
    width: 34px;
    height: 26px;
    position: relative;

    background: transparent;
    border: none;
    cursor: pointer;

    display: none;
}

/* lines */
.hamburger span {
    position: absolute;
    left: 0;
    width: 100%;
    height: 3px;
    background: white;
    border-radius: 3px;
    transition: all 0.25s ease;
}

.hamburger span:nth-child(1) { top: 0; }
.hamburger span:nth-child(2) { top: 50%; transform: translateY(-50%); }
.hamburger span:nth-child(3) { bottom: 0; }

/* OPEN STATE */
.hamburger.open span:nth-child(1) {
    top: 50%;
    transform: rotate(45deg);
}
.hamburger.open span:nth-child(2) {
    opacity: 0;
}
.hamburger.open span:nth-child(3) {
    top: 50%;
    transform: rotate(-45deg);
}

/* =========================
   DROPDOWN MENU
   ========================= */
.dropdown-menu {
    position: absolute;
    top: 60px;
    right: 12px;

    background: white;
    border-radius: 14px;
    box-shadow: 0 12px 30px rgba(0,0,0,0.25);

    display: flex;
    flex-direction: column;

    overflow: hidden;

    min-width: 200px;

    opacity: 0;
    transform: translateY(-10px) scale(0.98);
    pointer-events: none;

    transition: all 0.22s ease;
}

.dropdown-menu.open {
    opacity: 1;
    transform: translateY(0) scale(1);
    pointer-events: auto;
    z-index: 10;
}

/* ITEMS */
.dropdown-item {
    padding: 14px 16px;
    border: none;
    background: white;
    text-align: left;
    font-size: 14px;
    cursor: pointer;

    transition: background 0.15s ease;
}

.dropdown-item:hover {
    background: #f4f4f4;
}

/* =========================
   MOBILE
   ========================= */
@media (max-width: 700px) {
    .desktop-nav {
        display: none;
    }

    .hamburger {
        display: block;
    }
}