.vtab {
    background: #fff;
    color: var(--text-dark);
    border: 2px solid var(--border);
    border-radius: 16px;
    padding: 6px 12px;
    font-size: 0.78rem;
    font-weight: 700;
    cursor: pointer;
    transition: all 0.2s ease;
    flex: 1;
    text-align: center;
}
.vtab:hover {
    border-color: var(--primary);
    color: var(--primary);
    transform: translateY(-1px);
}
.vtab.active {
    background: linear-gradient(135deg, var(--primary), #00a656);
    color: #fff;
    border-color: transparent;
    box-shadow: 0 4px 12px rgba(0,126,63,0.32);
}
.donate-amt-btn {
    background: #fff;
    color: var(--text-dark);
    border: 2px solid var(--border);
    border-radius: 10px;
    padding: 7px 5px;
    font-size: 0.82rem;
    font-weight: 700;
    cursor: pointer;
    transition: all 0.2s ease;
    text-align: center;
    width: 100%;
}
.donate-amt-btn:hover {
    border-color: var(--accent);
    color: var(--accent);
    transform: translateY(-2px);
    box-shadow: 0 4px 10px rgba(236,105,31,0.18);
}
.donate-amt-btn.active {
    background: linear-gradient(135deg, var(--accent), #ff9d4d);
    color: #fff;
    border-color: transparent;
    box-shadow: 0 4px 14px rgba(236,105,31,0.38);
    transform: translateY(-1px);
}
.donate-submit-btn {
    background: linear-gradient(135deg, var(--accent), #ff9d4d);
    color: #fff;
    border: none;
    border-radius: 22px;
    padding: 11px;
    font-size: 0.88rem;
    font-weight: 700;
    width: 100%;
    cursor: pointer;
    transition: all 0.22s ease;
    box-shadow: 0 6px 18px rgba(236,105,31,0.35);
    letter-spacing: 0.3px;
}
.donate-submit-btn:hover:not(:disabled) {
    transform: translateY(-2px);
    box-shadow: 0 10px 26px rgba(236,105,31,0.45);
}
.donate-submit-btn:active:not(:disabled) {
    transform: translateY(0);
    box-shadow: 0 4px 12px rgba(236,105,31,0.3);
}
.donate-submit-btn:disabled {
    opacity: 0.7;
    cursor: not-allowed;
    transform: none;
}
.donate-label {
    font-weight: 600;
    font-size: 0.85rem;
    color: var(--text-dark);
    margin-bottom: 6px;
    display: block;
}
.donate-label sup {
    color: #dc3545;
}
.donate-field {
    position: relative;
}
.donate-field > i {
    position: absolute;
    left: 15px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-muted);
    font-size: 0.9rem;
    pointer-events: none;
}
.donate-field > input {
    border: 2px solid var(--border);
    border-radius: 12px;
    padding: 13px 16px 13px 40px;
    font-size: 0.95rem;
    width: 100%;
    outline: none;
    transition: border-color 0.2s, box-shadow 0.2s;
}
#donateForm input:focus,
#donateForm textarea:focus,
#customAmount:focus {
    border-color: var(--primary) !important;
    box-shadow: 0 0 0 3px rgba(0,126,63,0.1);
}
#donateForm input.invalid,
#donateForm textarea.invalid {
    border-color: #dc3545 !important;
}
#donateForm label.invalid,
.donate-error {
    color: #dc3545;
    font-size: 0.78rem;
    font-weight: 500;
    margin-top: 5px;
    display: block;
}