/* ============================================================
   PROFESSIONAL THEME — Yellow Color Scheme
   ============================================================ */

/* ── BACK TO TOP ────────────────────────────────────────────── */
#back-to-top {
    position: fixed;
    bottom: 28px;
    right: 28px;
    width: 44px;
    height: 44px;
    background: #f5c518;
    color: #4a4a4a;
    border: none;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: .9rem;
    cursor: pointer;
    opacity: 0;
    visibility: hidden;
    transition: all .3s ease;
    z-index: 999;
    box-shadow: 0 4px 16px rgba(245,197,24,.5);
}
#back-to-top.visible {
    opacity: 1;
    visibility: visible;
}
#back-to-top:hover {
    background: #d4a800;
    transform: translateY(-3px);
    box-shadow: 0 8px 24px rgba(245,197,24,.6);
}

/* ── SCROLLBAR ──────────────────────────────────────────────── */
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: #f1f1f1; }
::-webkit-scrollbar-thumb { background: #f5c518; border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: #d4a800; }

/* ── SELECTION ──────────────────────────────────────────────── */
::selection { background: rgba(245,197,24,.25); color: #d4a800; }

/* ── SMOOTH SCROLL ──────────────────────────────────────────── */
html { scroll-behavior: smooth; }

/* ── BODY ───────────────────────────────────────────────────── */
body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    color: #4a4a4a;
    background: #ffffff;
    -webkit-font-smoothing: antialiased;
}

/* ── HEADER SCROLL EFFECT ───────────────────────────────────── */
#site-header.scrolled {
    background: rgba(13,17,23,1) !important;
    box-shadow: 0 4px 20px rgba(0,0,0,.3);
}

/* ── TOAST OVERRIDE ─────────────────────────────────────────── */
.toastify {
    border-radius: 10px !important;
    font-family: 'Inter', sans-serif !important;
    font-size: .88rem !important;
    font-weight: 600 !important;
    padding: .75rem 1.25rem !important;
    box-shadow: 0 8px 24px rgba(0,0,0,.2) !important;
}