.coupon-modal-overlay {
    position: fixed;
    top: 0; left: 0; right: 0; bottom: 0;
    background: rgba(0, 0, 0, 0.7);
    backdrop-filter: blur(4px);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 10000;
    animation: couponFadeIn 0.3s ease;
}
@keyframes couponFadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}
.coupon-modal {
    background: var(--bg-secondary, #111820);
    border: 1px solid rgba(20, 184, 166, 0.3);
    border-radius: 16px;
    padding: 32px 28px;
    text-align: center;
    max-width: 340px;
    width: 90%;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.5), 0 0 30px rgba(20, 184, 166, 0.1);
    animation: couponPopIn 0.35s ease;
}
@keyframes couponPopIn {
    from { transform: scale(0.8) translateY(20px); opacity: 0; }
    to { transform: scale(1) translateY(0); opacity: 1; }
}
.coupon-modal-icon {
    margin-bottom: 16px;
    animation: couponSpin 0.8s ease;
}
@keyframes couponSpin {
    from { transform: rotate(-180deg) scale(0.5); opacity: 0; }
    to { transform: rotate(0deg) scale(1); opacity: 1; }
}
.coupon-modal-title {
    font-size: 20px;
    font-weight: 700;
    color: var(--accent-primary, #1ea459);
    margin: 0 0 10px;
}
.coupon-modal-desc {
    font-size: 14px;
    color: var(--text-secondary, #b8c5d0);
    line-height: 1.6;
    margin: 0 0 24px;
}
.coupon-modal-buttons {
    display: flex;
    gap: 8px;
}
.coupon-modal-btn {
    flex: 1;
    padding: 10px 16px;
    border-radius: 8px;
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    border: none;
    text-decoration: none;
    text-align: center;
    transition: all 0.2s;
}
.coupon-btn-primary {
    background: linear-gradient(135deg, var(--accent-primary, #1ea459), var(--accent-secondary, #6db142));
    color: #eef1f5;
}
.coupon-btn-primary:hover {
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(20, 184, 166, 0.3);
}
.coupon-btn-secondary {
    background: var(--bg-tertiary, #1a232e);
    color: var(--text-primary, #fff);
    border: 1px solid var(--border-dark, #1e2a36);
}
.coupon-btn-secondary:hover {
    background: var(--bg-hover, #222d3a);
}