.top-bar {
    background: rgba(255, 255, 255, 0.74);
    border-bottom: 1px solid rgba(15, 23, 42, 0.06);
    padding: 12px 0;
    position: sticky;
    top: 0;
    z-index: 100;
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    box-shadow: 0 8px 24px rgba(15, 23, 42, 0.06);
}

body.dark-theme .top-bar {
    background: rgba(15, 23, 42, 0.76);
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
    box-shadow: 0 10px 28px rgba(0, 0, 0, 0.22);
}

.nav-shell {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 18px;
}

.logo {
    display: flex;
    align-items: center;
    gap: 14px;
    color: var(--primary);
    min-width: 0;
}


.site-logo-mark {
    width: 52px;
    height: 52px;
    object-fit: contain;
    border-radius: 16px;
    background: #f2f3f6;
    box-shadow: 0 14px 28px rgba(15, 23, 42, 0.12);
    border: 1px solid rgba(15, 23, 42, 0.08);
    flex-shrink: 0;
}

.logo.full-logo {
    gap: 12px;
}

.logo.full-logo .logo-title {
    letter-spacing: 0.16em;
}

.logo i {
    font-size: 21px;
    width: 48px;
    height: 48px;
    display: grid;
    place-items: center;
    border-radius: 16px;
    color: white;
    background: linear-gradient(135deg, var(--primary), var(--primary-light));
    box-shadow: 0 14px 28px rgba(22, 163, 74, 0.22);
    flex-shrink: 0;
}

.logo-text {
    display: flex;
    flex-direction: column;
    line-height: 1.1;
    min-width: 0;
}

.logo-title {
    font-size: 24px;
    font-weight: 900;
    letter-spacing: -0.4px;
    color: var(--text-primary);
}

body.dark-theme .logo-title {
    color: #f8fbff;
}

.logo-sub {
    font-size: 12px;
    color: var(--text-muted);
    margin-top: 4px;
}

.header-actions {
    display: flex;
    align-items: center;
    gap: 12px;
    flex-wrap: wrap;
    justify-content: flex-end;
}

.theme-toggle,
.whatsapp-btn,
.auth-btn,
.user-btn,
.back-btn,
.auth-submit,
.whatsapp-verify-btn,
.btn-primary,
.btn-secondary,
.btn-edit,
.btn-delete,
.btn-success,
.booking-submit,
.booking-direct-btn,
.booking-success-btn {
    transition: var(--transition);
}

.theme-toggle {
    width: 46px;
    height: 46px;
    border-radius: 14px;
    background: rgba(255,255,255,0.72);
    color: var(--text-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 18px;
    box-shadow: 0 8px 22px rgba(15, 23, 42, 0.06);
    border: 1px solid rgba(15, 23, 42, 0.06);
}

body.dark-theme .theme-toggle {
    background: rgba(255,255,255,0.06);
    border-color: rgba(255,255,255,0.08);
    color: #f3f7ff;
}

.theme-toggle:hover {
    background: rgba(255,255,255,0.92);
    transform: translateY(-1px);
}

body.dark-theme .theme-toggle:hover {
    background: rgba(255,255,255,0.10);
}

.whatsapp-btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 11px 20px;
    background: linear-gradient(135deg, #25d366, #128c7e);
    color: white;
    border-radius: 14px;
    font-weight: 700;
    box-shadow: 0 12px 26px rgba(18, 140, 126, 0.20);
    white-space: nowrap;
}

.whatsapp-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 16px 32px rgba(18, 140, 126, 0.24);
}

.auth-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 11px 20px;
    border-radius: 14px;
    font-weight: 700;
    background: rgba(255,255,255,0.78);
    color: var(--text-primary);
    border: 1px solid rgba(15, 23, 42, 0.06);
    box-shadow: 0 8px 22px rgba(15, 23, 42, 0.05);
    white-space: nowrap;
}

body.dark-theme .auth-btn {
    background: rgba(255,255,255,0.06);
    color: #eef4ff;
    border-color: rgba(255,255,255,0.08);
}

.auth-btn.primary {
    background: linear-gradient(135deg, var(--primary), var(--primary-light));
    color: white;
    border: none;
    box-shadow: 0 14px 30px rgba(22, 163, 74, 0.18);
}

.auth-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 12px 28px rgba(15, 23, 42, 0.10);
}

.auth-btn.primary:hover {
    box-shadow: 0 16px 34px rgba(22, 163, 74, 0.24);
}

.user-menu {
    position: relative;
}

.user-btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 11px 16px;
    background: rgba(255,255,255,0.78);
    border-radius: 14px;
    font-weight: 700;
    border: 1px solid rgba(15, 23, 42, 0.06);
    color: var(--text-primary);
    box-shadow: 0 8px 22px rgba(15, 23, 42, 0.05);
}

body.dark-theme .user-btn {
    background: rgba(255,255,255,0.06);
    border-color: rgba(255,255,255,0.08);
    color: #eef4ff;
}

.user-btn:hover {
    background: rgba(255,255,255,0.96);
    transform: translateY(-1px);
}

body.dark-theme .user-btn:hover {
    background: rgba(255,255,255,0.10);
}

.user-chevron {
    font-size: 12px;
    opacity: 0.75;
}

.user-dropdown {
    position: absolute;
    top: calc(100% + 10px);
    right: 0;
    background: rgba(255,255,255,0.92);
    border: 1px solid rgba(15, 23, 42, 0.06);
    border-radius: 18px;
    min-width: 240px;
    box-shadow: 0 24px 50px rgba(15, 23, 42, 0.14);
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: var(--transition);
    z-index: 99999;
    overflow: hidden;
    backdrop-filter: blur(18px);
    -webkit-backdrop-filter: blur(18px);
}

body.dark-theme .user-dropdown {
    background: rgba(15, 23, 42, 0.92);
    border-color: rgba(255,255,255,0.08);
    box-shadow: 0 24px 50px rgba(0, 0, 0, 0.30);
}

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

.user-dropdown a {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 14px 16px;
    color: var(--text-primary);
    transition: var(--transition);
}

body.dark-theme .user-dropdown a {
    color: #eef4ff;
}

.user-dropdown a:hover {
    background: rgba(15, 23, 42, 0.04);
}

body.dark-theme .user-dropdown a:hover {
    background: rgba(255,255,255,0.06);
}

.user-dropdown a i {
    width: 20px;
    color: var(--primary);
}

/* Universal premium back button */
.premium-back-btn,
a.premium-back-btn,
button.premium-back-btn {
    display: inline-flex !important;
    align-items: center !important;
    justify-content: center !important;
    gap: 9px !important;
    min-height: 44px !important;
    padding: 11px 17px !important;
    border-radius: 999px !important;
    border: 1px solid rgba(148, 163, 184, .28) !important;
    background: linear-gradient(135deg, rgba(255,255,255,.96), rgba(248,250,252,.90)) !important;
    color: var(--text-primary, #0f172a) !important;
    font-weight: 900 !important;
    text-decoration: none !important;
    box-shadow: 0 14px 34px rgba(15, 23, 42, .10) !important;
    white-space: nowrap !important;
    line-height: 1 !important;
    position: relative !important;
    z-index: 20 !important;
}
.premium-back-btn i {
    width: 18px;
    height: 18px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
}
.premium-back-btn:hover {
    transform: translateY(-1px) !important;
    border-color: rgba(22, 163, 74, .38) !important;
    box-shadow: 0 18px 42px rgba(15, 23, 42, .14) !important;
}
body.dark-theme .premium-back-btn {
    background: linear-gradient(135deg, rgba(15,23,42,.92), rgba(30,41,59,.88)) !important;
    color: #f8fafc !important;
    border-color: rgba(255,255,255,.12) !important;
}
.header-actions .premium-back-btn,
.nav-shell .premium-back-btn,
.admin-header .premium-back-btn {
    flex: 0 0 auto;
}
@media (max-width: 680px) {
    .premium-back-btn {
        min-height: 42px !important;
        padding: 10px 13px !important;
        font-size: 14px !important;
    }
}