/* ============================================
   FESTIVE THEMES - YEAR-ROUND CELEBRATIONS
   UPDATED WITH IMPROVED ANIMATIONS
   ============================================ */

/* Base container for all themes */
.header-center {
    position: relative;
    overflow: visible;
}

/* Decorations behind logo */
.theme-decorations-back {
    position: absolute;
    top: -50px;
    left: -100px;
    right: -100px;
    height: 250px;
    pointer-events: none;
    z-index: 1;
}

/* Decorations in front of logo */
.theme-decorations-front {
    position: absolute;
    top: -50px;
    left: -100px;
    right: -100px;
    height: 250px;
    pointer-events: none;
    z-index: 100;
}

/* ============================================
   1. NEW YEAR - REALISTIC FIREWORKS (Dec 26 - Jan 15)
   ============================================ */

.theme-newyear .fireworks,
.theme-newyearseve .fireworks {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
}

.firework-burst {
    position: absolute;
    width: 100px;
    height: 100px;
}

.firework-particle {
    position: absolute;
    width: 3px;
    height: 3px;
    border-radius: 50%;
    animation: fireworkExplode 1.5s ease-out infinite;
}

@keyframes fireworkExplode {
    0% {
        transform: translate(0, 0) scale(1);
        opacity: 1;
    }

    100% {
        transform: translate(var(--tx), var(--ty)) scale(0);
        opacity: 0;
    }
}

/* Firework burst 1 - Gold */
.firework-burst:nth-child(1) {
    left: 20%;
    top: 20%;
}

.firework-burst:nth-child(1) .firework-particle {
    background: #FFD700;
    animation-delay: 0s;
}

.firework-burst:nth-child(1) .firework-particle:nth-child(1) {
    --tx: 40px;
    --ty: -40px;
}

.firework-burst:nth-child(1) .firework-particle:nth-child(2) {
    --tx: -40px;
    --ty: -40px;
}

.firework-burst:nth-child(1) .firework-particle:nth-child(3) {
    --tx: 40px;
    --ty: 40px;
}

.firework-burst:nth-child(1) .firework-particle:nth-child(4) {
    --tx: -40px;
    --ty: 40px;
}

.firework-burst:nth-child(1) .firework-particle:nth-child(5) {
    --tx: 0px;
    --ty: -50px;
}

.firework-burst:nth-child(1) .firework-particle:nth-child(6) {
    --tx: 0px;
    --ty: 50px;
}

.firework-burst:nth-child(1) .firework-particle:nth-child(7) {
    --tx: 50px;
    --ty: 0px;
}

.firework-burst:nth-child(1) .firework-particle:nth-child(8) {
    --tx: -50px;
    --ty: 0px;
}

/* Firework burst 2 - Pink */
.firework-burst:nth-child(2) {
    right: 20%;
    top: 30%;
}

.firework-burst:nth-child(2) .firework-particle {
    background: #FF69B4;
    animation-delay: 0.8s;
}

.firework-burst:nth-child(2) .firework-particle:nth-child(1) {
    --tx: 45px;
    --ty: -35px;
}

.firework-burst:nth-child(2) .firework-particle:nth-child(2) {
    --tx: -45px;
    --ty: -35px;
}

.firework-burst:nth-child(2) .firework-particle:nth-child(3) {
    --tx: 35px;
    --ty: 45px;
}

.firework-burst:nth-child(2) .firework-particle:nth-child(4) {
    --tx: -35px;
    --ty: 45px;
}

.firework-burst:nth-child(2) .firework-particle:nth-child(5) {
    --tx: 0px;
    --ty: -55px;
}

.firework-burst:nth-child(2) .firework-particle:nth-child(6) {
    --tx: 0px;
    --ty: 55px;
}

.firework-burst:nth-child(2) .firework-particle:nth-child(7) {
    --tx: 55px;
    --ty: 0px;
}

.firework-burst:nth-child(2) .firework-particle:nth-child(8) {
    --tx: -55px;
    --ty: 0px;
}

/* Firework burst 3 - Blue */
.firework-burst:nth-child(3) {
    left: 50%;
    top: 15%;
}

.firework-burst:nth-child(3) .firework-particle {
    background: #00BFFF;
    animation-delay: 1.6s;
}

.firework-burst:nth-child(3) .firework-particle:nth-child(1) {
    --tx: 42px;
    --ty: -42px;
}

.firework-burst:nth-child(3) .firework-particle:nth-child(2) {
    --tx: -42px;
    --ty: -42px;
}

.firework-burst:nth-child(3) .firework-particle:nth-child(3) {
    --tx: 42px;
    --ty: 42px;
}

.firework-burst:nth-child(3) .firework-particle:nth-child(4) {
    --tx: -42px;
    --ty: 42px;
}

.firework-burst:nth-child(3) .firework-particle:nth-child(5) {
    --tx: 0px;
    --ty: -52px;
}

.firework-burst:nth-child(3) .firework-particle:nth-child(6) {
    --tx: 0px;
    --ty: 52px;
}

.firework-burst:nth-child(3) .firework-particle:nth-child(7) {
    --tx: 52px;
    --ty: 0px;
}

.firework-burst:nth-child(3) .firework-particle:nth-child(8) {
    --tx: -52px;
    --ty: 0px;
}

/* ============================================
   2. VALENTINE'S DAY - HEARTS (Feb 1-14)
   ============================================ */

.theme-valentine .hearts {
    position: absolute;
    top: -50px;
    left: 0;
    width: 100%;
    height: 200px;
}

.heart {
    position: absolute;
    color: #FF1493;
    font-size: 1.2em;
    opacity: 0.8;
    animation: heartFall linear infinite;
}

@keyframes heartFall {
    0% {
        top: -10px;
        opacity: 0;
        transform: rotate(0deg);
    }

    10% {
        opacity: 0.8;
    }

    90% {
        opacity: 0.8;
    }

    100% {
        top: 200px;
        opacity: 0;
        transform: rotate(360deg);
    }
}

.heart:nth-child(1) {
    left: 15%;
    animation-duration: 4s;
    animation-delay: 0s;
}

.heart:nth-child(2) {
    left: 30%;
    animation-duration: 5s;
    animation-delay: 0.5s;
    color: #FF69B4;
}

.heart:nth-child(3) {
    left: 45%;
    animation-duration: 4.5s;
    animation-delay: 1s;
}

.heart:nth-child(4) {
    left: 60%;
    animation-duration: 5.5s;
    animation-delay: 1.5s;
    color: #FF1493;
}

.heart:nth-child(5) {
    left: 75%;
    animation-duration: 4.8s;
    animation-delay: 0.8s;
}

.heart:nth-child(6) {
    left: 85%;
    animation-duration: 5.2s;
    animation-delay: 1.2s;
    color: #FF69B4;
}

/* ============================================
   3. SPRING - BEES (March 1-31)
   ============================================ */

.theme-spring .bees {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 150px;
}

.bee {
    position: absolute;
    font-size: 1.5em;
}

/* Bee 1 - Wavy pattern */
.bee:nth-child(1) {
    animation: beeFly1 18s ease-in-out infinite;
}

@keyframes beeFly1 {
    0% {
        left: -10%;
        top: 20%;
    }

    20% {
        left: 25%;
        top: 45%;
    }

    40% {
        left: 50%;
        top: 25%;
    }

    60% {
        left: 75%;
        top: 50%;
    }

    80% {
        left: 95%;
        top: 30%;
    }

    100% {
        left: 110%;
        top: 40%;
    }
}

/* Bee 2 - Zigzag pattern */
.bee:nth-child(2) {
    animation: beeFly2 20s ease-in-out infinite;
    animation-delay: 4s;
}

@keyframes beeFly2 {
    0% {
        left: -10%;
        top: 50%;
    }

    15% {
        left: 15%;
        top: 25%;
    }

    30% {
        left: 35%;
        top: 55%;
    }

    50% {
        left: 60%;
        top: 30%;
    }

    70% {
        left: 80%;
        top: 50%;
    }

    85% {
        left: 95%;
        top: 35%;
    }

    100% {
        left: 110%;
        top: 45%;
    }
}

/* Bee 3 - Circular pattern */
.bee:nth-child(3) {
    animation: beeFly3 16s ease-in-out infinite;
    animation-delay: 8s;
}

@keyframes beeFly3 {
    0% {
        left: -10%;
        top: 35%;
    }

    25% {
        left: 30%;
        top: 20%;
    }

    50% {
        left: 55%;
        top: 55%;
    }

    75% {
        left: 85%;
        top: 25%;
    }

    100% {
        left: 110%;
        top: 50%;
    }
}

/* Bee 4 - Smooth curve */
.bee:nth-child(4) {
    animation: beeFly4 22s ease-in-out infinite;
    animation-delay: 2s;
}

@keyframes beeFly4 {
    0% {
        left: -10%;
        top: 40%;
    }

    20% {
        left: 20%;
        top: 30%;
    }

    40% {
        left: 45%;
        top: 50%;
    }

    60% {
        left: 65%;
        top: 35%;
    }

    80% {
        left: 90%;
        top: 45%;
    }

    100% {
        left: 110%;
        top: 30%;
    }
}

/* Bee 5 - Random dips */
.bee:nth-child(5) {
    animation: beeFly5 19s ease-in-out infinite;
    animation-delay: 6s;
}

@keyframes beeFly5 {
    0% {
        left: -10%;
        top: 45%;
    }

    18% {
        left: 18%;
        top: 55%;
    }

    35% {
        left: 40%;
        top: 28%;
    }

    52% {
        left: 58%;
        top: 48%;
    }

    70% {
        left: 78%;
        top: 32%;
    }

    88% {
        left: 92%;
        top: 52%;
    }

    100% {
        left: 110%;
        top: 38%;
    }
}

/* ============================================
   4. MOTHER'S DAY - ROSE PETALS (May 1-15)
   ============================================ */

.theme-mothersday .petals {
    position: absolute;
    top: -50px;
    left: 0;
    width: 100%;
    height: 200px;
}

.petal {
    position: absolute;
    width: 12px;
    height: 12px;
    background: linear-gradient(45deg, #FF69B4, #FFB6C1);
    border-radius: 50% 0 50% 0;
    opacity: 0.8;
    animation: petalFall linear infinite;
}

@keyframes petalFall {
    0% {
        top: -10px;
        opacity: 0;
        transform: rotate(0deg) translateX(0);
    }

    10% {
        opacity: 0.8;
    }

    90% {
        opacity: 0.8;
    }

    100% {
        top: 200px;
        opacity: 0;
        transform: rotate(720deg) translateX(30px);
    }
}

.petal:nth-child(1) {
    left: 10%;
    animation-duration: 6s;
    animation-delay: 0s;
}

.petal:nth-child(2) {
    left: 25%;
    animation-duration: 7s;
    animation-delay: 1s;
    background: linear-gradient(45deg, #FF1493, #FF69B4);
}

.petal:nth-child(3) {
    left: 40%;
    animation-duration: 6.5s;
    animation-delay: 2s;
}

.petal:nth-child(4) {
    left: 55%;
    animation-duration: 7.5s;
    animation-delay: 0.5s;
}

.petal:nth-child(5) {
    left: 70%;
    animation-duration: 6.8s;
    animation-delay: 1.5s;
    background: linear-gradient(45deg, #FF69B4, #FFB6C1);
}

.petal:nth-child(6) {
    left: 85%;
    animation-duration: 7.2s;
    animation-delay: 2.5s;
}

/* ============================================
   5. FATHER'S DAY - TIES (June 1-20)
   ============================================ */

.theme-fathersday .ties {
    position: absolute;
    top: -50px;
    left: 0;
    width: 100%;
    height: 200px;
}

.tie {
    position: absolute;
    font-size: 1.5em;
    opacity: 0.7;
    animation: tieFall linear infinite;
}

@keyframes tieFall {
    0% {
        top: -10px;
        opacity: 0;
        transform: rotate(0deg);
    }

    10% {
        opacity: 0.7;
    }

    90% {
        opacity: 0.7;
    }

    100% {
        top: 200px;
        opacity: 0;
        transform: rotate(180deg);
    }
}

/* More ties with varied colors */
.tie:nth-child(1) {
    left: 10%;
    animation-duration: 5s;
    animation-delay: 0s;
    color: #1e3a8a;
}

.tie:nth-child(2) {
    left: 20%;
    animation-duration: 6s;
    animation-delay: 0.5s;
    color: #4b5563;
}

.tie:nth-child(3) {
    left: 30%;
    animation-duration: 5.5s;
    animation-delay: 1s;
    color: #7f1d1d;
}

.tie:nth-child(4) {
    left: 40%;
    animation-duration: 6.5s;
    animation-delay: 1.5s;
    color: #064e3b;
}

.tie:nth-child(5) {
    left: 50%;
    animation-duration: 5.8s;
    animation-delay: 0.8s;
    color: #1e40af;
}

.tie:nth-child(6) {
    left: 60%;
    animation-duration: 6.2s;
    animation-delay: 1.2s;
    color: #6b7280;
}

.tie:nth-child(7) {
    left: 70%;
    animation-duration: 5.3s;
    animation-delay: 1.8s;
    color: #991b1b;
}

.tie:nth-child(8) {
    left: 80%;
    animation-duration: 6.8s;
    animation-delay: 0.3s;
    color: #1e293b;
}

.tie:nth-child(9) {
    left: 90%;
    animation-duration: 5.6s;
    animation-delay: 2s;
    color: #4338ca;
}

.tie:nth-child(10) {
    left: 15%;
    animation-duration: 6.3s;
    animation-delay: 2.5s;
    color: #78350f;
}

/* ============================================
   6. INDEPENDENCE DAY - MEXICAN FLAGS (Sep 1-16)
   ============================================ */

.theme-independence .flags {
    position: absolute;
    top: -50px;
    left: 0;
    width: 100%;
    height: 200px;
}

.flag,
.bell {
    position: absolute;
    font-size: 1.3em;
    animation: mexicanFall linear infinite;
}

@keyframes mexicanFall {
    0% {
        top: -10px;
        opacity: 0;
        transform: rotate(0deg);
    }

    10% {
        opacity: 0.9;
    }

    90% {
        opacity: 0.9;
    }

    100% {
        top: 200px;
        opacity: 0;
        transform: rotate(360deg);
    }
}

.flag:nth-child(1) {
    left: 15%;
    animation-duration: 5s;
    animation-delay: 0s;
}

.flag:nth-child(2) {
    left: 45%;
    animation-duration: 6s;
    animation-delay: 1s;
}

.flag:nth-child(3) {
    left: 75%;
    animation-duration: 5.5s;
    animation-delay: 2s;
}

.bell:nth-child(4) {
    left: 30%;
    animation-duration: 5.8s;
    animation-delay: 0.5s;
    color: #FFD700;
}

.bell:nth-child(5) {
    left: 60%;
    animation-duration: 6.2s;
    animation-delay: 1.5s;
    color: #FFD700;
}

.bell:nth-child(6) {
    left: 85%;
    animation-duration: 5.3s;
    animation-delay: 2.5s;
    color: #FFD700;
}

/* ============================================
   7. HALLOWEEN - SPOOKY (October 1-31)
   ============================================ */

.theme-halloween .pumpkins {
    position: absolute;
    top: -50px;
    left: 0;
    width: 100%;
    height: 200px;
}

.pumpkin,
.ghost {
    position: absolute;
    font-size: 1.5em;
    animation: spookyFall linear infinite;
}

@keyframes spookyFall {
    0% {
        top: -10px;
        opacity: 0;
    }

    10% {
        opacity: 0.8;
    }

    90% {
        opacity: 0.8;
    }

    100% {
        top: 200px;
        opacity: 0;
    }
}

.pumpkin:nth-child(1) {
    left: 20%;
    animation-duration: 6s;
    animation-delay: 0s;
}

.pumpkin:nth-child(2) {
    left: 60%;
    animation-duration: 7s;
    animation-delay: 1s;
}

.pumpkin:nth-child(3) {
    left: 80%;
    animation-duration: 6.5s;
    animation-delay: 2s;
}

.ghost:nth-child(4) {
    left: 10%;
    animation-duration: 5.5s;
    animation-delay: 0.5s;
}

.ghost:nth-child(5) {
    left: 40%;
    animation-duration: 6.8s;
    animation-delay: 1.5s;
}

.ghost:nth-child(6) {
    left: 70%;
    animation-duration: 6.2s;
    animation-delay: 2.5s;
}

.ghost:nth-child(7) {
    left: 90%;
    animation-duration: 5.8s;
    animation-delay: 0.8s;
}

/* ============================================
   8. DAY OF THE DEAD - MARIGOLDS (Nov 1-2)
   ============================================ */

.theme-dayofthedead .marigolds {
    position: absolute;
    top: -50px;
    left: 0;
    width: 100%;
    height: 200px;
}

.marigold-petal {
    position: absolute;
    width: 10px;
    height: 10px;
    background: linear-gradient(45deg, #FF8C00, #FFA500);
    border-radius: 50%;
    opacity: 0.8;
    animation: marigoldFall linear infinite;
}

@keyframes marigoldFall {
    0% {
        top: -10px;
        opacity: 0;
        transform: rotate(0deg);
    }

    10% {
        opacity: 0.8;
    }

    90% {
        opacity: 0.8;
    }

    100% {
        top: 200px;
        opacity: 0;
        transform: rotate(360deg);
    }
}

.marigold-petal:nth-child(1) {
    left: 10%;
    animation-duration: 5s;
    animation-delay: 0s;
}

.marigold-petal:nth-child(2) {
    left: 25%;
    animation-duration: 6s;
    animation-delay: 0.5s;
}

.marigold-petal:nth-child(3) {
    left: 40%;
    animation-duration: 5.5s;
    animation-delay: 1s;
}

.marigold-petal:nth-child(4) {
    left: 55%;
    animation-duration: 6.5s;
    animation-delay: 1.5s;
}

.marigold-petal:nth-child(5) {
    left: 70%;
    animation-duration: 5.8s;
    animation-delay: 2s;
}

.marigold-petal:nth-child(6) {
    left: 85%;
    animation-duration: 6.2s;
    animation-delay: 0.8s;
}

.skull {
    position: absolute;
    font-size: 1.2em;
    animation: skullFall linear infinite;
}

@keyframes skullFall {
    0% {
        top: -10px;
        opacity: 0;
    }

    10% {
        opacity: 0.9;
    }

    90% {
        opacity: 0.9;
    }

    100% {
        top: 200px;
        opacity: 0;
    }
}

.skull:nth-child(7) {
    left: 30%;
    animation-duration: 7s;
    animation-delay: 0s;
}

.skull:nth-child(8) {
    left: 65%;
    animation-duration: 7.5s;
    animation-delay: 1s;
}

/* ============================================
   9. THANKSGIVING - AUTUMN (Nov 20-30)
   ============================================ */

.theme-thanksgiving .leaves {
    position: absolute;
    top: -50px;
    left: 0;
    width: 100%;
    height: 200px;
}

.leaf {
    position: absolute;
    font-size: 1.2em;
    opacity: 0.8;
    animation: leafFall linear infinite;
}

@keyframes leafFall {
    0% {
        top: -10px;
        opacity: 0;
        transform: rotate(0deg) translateX(0);
    }

    10% {
        opacity: 0.8;
    }

    90% {
        opacity: 0.8;
    }

    100% {
        top: 200px;
        opacity: 0;
        transform: rotate(720deg) translateX(-30px);
    }
}

/* More leaves */
.leaf:nth-child(1) {
    left: 10%;
    animation-duration: 7s;
    animation-delay: 0s;
    color: #D2691E;
}

.leaf:nth-child(2) {
    left: 20%;
    animation-duration: 8s;
    animation-delay: 1s;
    color: #FF8C00;
}

.leaf:nth-child(3) {
    left: 30%;
    animation-duration: 7.5s;
    animation-delay: 2s;
    color: #8B4513;
}

.leaf:nth-child(4) {
    left: 40%;
    animation-duration: 8.5s;
    animation-delay: 0.5s;
    color: #CD853F;
}

.leaf:nth-child(5) {
    left: 50%;
    animation-duration: 7.8s;
    animation-delay: 1.5s;
    color: #D2691E;
}

.leaf:nth-child(6) {
    left: 60%;
    animation-duration: 8.2s;
    animation-delay: 2.5s;
    color: #FF8C00;
}

.leaf:nth-child(7) {
    left: 70%;
    animation-duration: 7.3s;
    animation-delay: 0.8s;
    color: #8B4513;
}

.leaf:nth-child(8) {
    left: 80%;
    animation-duration: 8.8s;
    animation-delay: 1.8s;
    color: #CD853F;
}

.leaf:nth-child(9) {
    left: 90%;
    animation-duration: 7.6s;
    animation-delay: 2.8s;
    color: #D2691E;
}

.leaf:nth-child(10) {
    left: 15%;
    animation-duration: 8.3s;
    animation-delay: 0.3s;
    color: #FF8C00;
}

/* ============================================
   10. CHRISTMAS - SNOWFLAKES (Dec 1-24)
   ============================================ */

.theme-christmas .snowflakes {
    position: absolute;
    top: -50px;
    left: 0;
    width: 100%;
    height: 200px;
}

.snowflake {
    position: absolute;
    top: -10px;
    color: #fff;
    font-size: 1em;
    opacity: 0.8;
    animation: fall linear infinite;
    text-shadow: 0 0 5px rgba(255, 255, 255, 0.5);
}

@keyframes fall {
    0% {
        top: -10px;
        opacity: 0;
    }

    10% {
        opacity: 0.8;
    }

    90% {
        opacity: 0.8;
    }

    100% {
        top: 200px;
        opacity: 0;
    }
}

.snowflake:nth-child(1) {
    left: 10%;
    animation-duration: 8s;
    animation-delay: 0s;
    font-size: 0.8em;
}

.snowflake:nth-child(2) {
    left: 20%;
    animation-duration: 10s;
    animation-delay: 1s;
    font-size: 1em;
    filter: blur(1px);
}

.snowflake:nth-child(3) {
    left: 30%;
    animation-duration: 7s;
    animation-delay: 2s;
    font-size: 0.9em;
}

.snowflake:nth-child(4) {
    left: 40%;
    animation-duration: 9s;
    animation-delay: 0.5s;
    font-size: 1.1em;
    filter: blur(0.5px);
}

.snowflake:nth-child(5) {
    left: 50%;
    animation-duration: 11s;
    animation-delay: 1.5s;
    font-size: 0.7em;
}

.snowflake:nth-child(6) {
    left: 60%;
    animation-duration: 8.5s;
    animation-delay: 2.5s;
    font-size: 1em;
    filter: blur(1px);
}

.snowflake:nth-child(7) {
    left: 70%;
    animation-duration: 9.5s;
    animation-delay: 0.8s;
    font-size: 0.85em;
}

.snowflake:nth-child(8) {
    left: 80%;
    animation-duration: 10.5s;
    animation-delay: 1.8s;
    font-size: 0.95em;
    filter: blur(0.8px);
}

.snowflake:nth-child(9) {
    left: 90%;
    animation-duration: 7.5s;
    animation-delay: 2.2s;
    font-size: 1.05em;
}

.snowflake:nth-child(10) {
    left: 15%;
    animation-duration: 9s;
    animation-delay: 3s;
    font-size: 0.9em;
    filter: blur(1.2px);
}

/* ============================================
   RESPONSIVE ADJUSTMENTS
   ============================================ */

@media (max-width: 768px) {

    .theme-decorations-back,
    .theme-decorations-front {
        left: -50px;
        right: -50px;
    }

    .snowflake,
    .heart,
    .leaf,
    .petal {
        font-size: 0.8em;
    }

    .firework-particle {
        width: 2px;
        height: 2px;
    }
}
/* ============================================
   3.5 BIRTHDAY - MARCH 25 (Special Day!)
   ============================================ */

.theme-birthday .birthday-elements {
    position: absolute;
    top: -50px;
    left: 0;
    width: 100%;
    height: 200px;
}

/* Birthday Cakes */
.birthday-cake {
    position: absolute;
    font-size: 1.8em;
    animation: cakeFall linear infinite;
}

@keyframes cakeFall {
    0% { top: -10px; opacity: 0; transform: rotate(0deg); }
    10% { opacity: 0.9; }
    90% { opacity: 0.9; }
    100% { top: 200px; opacity: 0; transform: rotate(360deg); }
}

.birthday-cake:nth-child(1) { left: 20%; animation-duration: 6s; animation-delay: 0s; }
.birthday-cake:nth-child(2) { left: 50%; animation-duration: 7s; animation-delay: 1s; }
.birthday-cake:nth-child(3) { left: 80%; animation-duration: 6.5s; animation-delay: 2s; }

/* Birthday Balloons */
.birthday-balloon {
    position: absolute;
    font-size: 1.5em;
    animation: balloonFloat linear infinite;
}

@keyframes balloonFloat {
    0% { top: 200px; opacity: 0; transform: rotate(0deg); }
    10% { opacity: 0.9; }
    90% { opacity: 0.9; }
    100% { top: -50px; opacity: 0; transform: rotate(-20deg); }
}

.birthday-balloon:nth-child(4) { left: 15%; animation-duration: 8s; animation-delay: 0s; }
.birthday-balloon:nth-child(5) { left: 40%; animation-duration: 9s; animation-delay: 1.5s; }
.birthday-balloon:nth-child(6) { left: 65%; animation-duration: 8.5s; animation-delay: 0.8s; }
.birthday-balloon:nth-child(7) { left: 90%; animation-duration: 9.5s; animation-delay: 2s; }

/* Birthday Confetti */
.birthday-confetti {
    position: absolute;
    width: 8px;
    height: 8px;
    border-radius: 50%;
    animation: confettiFall linear infinite;
}

@keyframes confettiFall {
    0% { top: -10px; opacity: 1; transform: rotate(0deg) scale(1); }
    100% { top: 200px; opacity: 0; transform: rotate(720deg) scale(0.5); }
}

.birthday-confetti:nth-child(8) { left: 10%; background: #FF69B4; animation-duration: 4s; animation-delay: 0s; }
.birthday-confetti:nth-child(9) { left: 25%; background: #FFD700; animation-duration: 5s; animation-delay: 0.5s; }
.birthday-confetti:nth-child(10) { left: 40%; background: #00BFFF; animation-duration: 4.5s; animation-delay: 1s; }
.birthday-confetti:nth-child(11) { left: 55%; background: #FF6347; animation-duration: 5.5s; animation-delay: 1.5s; }
.birthday-confetti:nth-child(12) { left: 70%; background: #9370DB; animation-duration: 4.8s; animation-delay: 0.8s; }
.birthday-confetti:nth-child(13) { left: 85%; background: #32CD32; animation-duration: 5.2s; animation-delay: 1.2s; }
.birthday-confetti:nth-child(14) { left: 30%; background: #FF1493; animation-duration: 4.3s; animation-delay: 2s; }
.birthday-confetti:nth-child(15) { left: 75%; background: #FFA500; animation-duration: 5.8s; animation-delay: 0.3s; }