.birthday-party {
    --background-gradient: radial-gradient(circle at 20% 20%, #ff9a9e 0%, #fad0c4 20%, #fcb69f 40%, #ffecd2 60%, #f6d365 80%, #fda085 100%);
    --text-glow: 0 0 18px rgba(255, 255, 255, 0.8);
}

/* Add energetic border/shine to cards during party */
.birthday-party .countdown-card {
    border-color: #ffd54f;
    box-shadow:
        0 12px 24px rgba(0, 0, 0, 0.35),
        0 0 30px rgba(255, 213, 79, 0.35),
        inset 0 1px 0 rgba(255, 255, 255, 0.3);
}

.birthday-party .countdown-card.main-countdown {
    transform: scale(1.08);
}

/* Fullscreen celebratory overlay for messages */
.birthday-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    pointer-events: none;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    z-index: 9999;
    padding: 10px 12px;
}

.birthday-party:not(.is-fullscreen) .container {
    padding-top: clamp(64px, 9vw, 130px);
}

/* Center overlay in fullscreen */
.is-fullscreen .birthday-overlay {
    top: 50%;
    left: 50%;
    right: auto;
    transform: translate(-50%, -50%);
    width: min(92vw, 1200px);
    align-items: center;
    justify-content: center;
    padding: 0;
}

.birthday-message {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Noto Sans", "Liberation Sans", sans-serif;
    font-size: clamp(22px, 4.2vw, 48px);
    font-weight: 800;
    color: #ffffff;
    text-align: center;
    line-height: 1.2;
    padding: 0.35em 0.7em;
    border-radius: 16px;
    background: linear-gradient(180deg, rgba(0,0,0,0.22), rgba(0,0,0,0.32));
    text-shadow:
        0 0 12px rgba(255,255,255,0.9),
        0 0 24px rgba(255, 64, 129, 0.6),
        0 8px 16px rgba(0,0,0,0.5);
    transform: translateY(10px);
    opacity: 0;
    animation: messageIn 700ms ease forwards;
}

.birthday-names {
    display: flex;
    flex-wrap: wrap;
    gap: 6px 8px;
    margin-top: 8px;
    justify-content: center;
}

.name-chip {
    pointer-events: none;
    color: #fff;
    font-size: clamp(12px, 2.4vw, 14px);
    background: rgba(0,0,0,0.35);
    border: 1px solid rgba(255,255,255,0.25);
    border-radius: 999px;
    padding: 4px 10px;
    box-shadow: 0 2px 6px rgba(0,0,0,0.25);
}

@keyframes messageIn {
    0% { opacity: 0; transform: scale(0.96) translateY(15px); }
    60% { opacity: 1; transform: scale(1.02) translateY(0); }
    100% { opacity: 1; transform: scale(1) translateY(0); }
}

/* Confetti background layer */
.birthday-confetti {
    position: fixed;
    inset: 0;
    overflow: hidden;
    pointer-events: none;
    z-index: 9998;
}

.confetti-piece {
    position: absolute;
    width: 10px;
    height: 18px;
    opacity: 0.9;
    transform: rotate(0deg);
    animation: fallConfetti linear forwards;
}

@keyframes fallConfetti {
    0% { transform: translateY(-20vh) rotate(0deg); }
    100% { transform: translateY(120vh) rotate(720deg); }
}