/* 
 * Animations Stylesheet for Birthday Apology Website
 * Contains all animations, transitions, and interactive effects
 */

/* ===== Fade In Animations ===== */
.fade-in {
    opacity: 0;
    transform: translateY(20px);
    animation: fadeIn 1s ease forwards;
}

.fade-in-delay {
    opacity: 0;
    transform: translateY(20px);
    animation: fadeIn 1s ease forwards 0.5s;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* ===== Floating Hearts Animation ===== */
.floating-hearts {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    overflow: hidden;
    pointer-events: none;
    z-index: -1;
}

.floating-hearts::before,
.floating-hearts::after {
    content: '❤';
    position: absolute;
    font-size: 2rem;
    color: var(--primary-color);
    opacity: 0.6;
    animation: float 6s linear infinite;
}

.floating-hearts::before {
    top: 20%;
    left: 10%;
    animation-delay: 0s;
}

.floating-hearts::after {
    top: 50%;
    left: 90%;
    animation-delay: 3s;
}

.floating-hearts.small::before,
.floating-hearts.small::after {
    font-size: 1rem;
}

/* Generate multiple hearts with different positions and delays */
.floating-hearts::before,
.floating-hearts::after {
    text-shadow: 
        5vw 10vh 0 var(--primary-color),
        10vw 20vh 0 var(--accent-color),
        15vw 5vh 0 var(--primary-color),
        20vw 15vh 0 var(--accent-color),
        25vw 25vh 0 var(--primary-color),
        30vw 10vh 0 var(--accent-color),
        35vw 30vh 0 var(--primary-color),
        40vw 5vh 0 var(--accent-color),
        45vw 15vh 0 var(--primary-color),
        50vw 25vh 0 var(--accent-color),
        55vw 5vh 0 var(--primary-color),
        60vw 20vh 0 var(--accent-color),
        65vw 10vh 0 var(--primary-color),
        70vw 30vh 0 var(--accent-color),
        75vw 15vh 0 var(--primary-color),
        80vw 25vh 0 var(--accent-color),
        85vw 5vh 0 var(--primary-color),
        90vw 15vh 0 var(--accent-color);
}

@keyframes float {
    0% {
        transform: translateY(0) rotate(0deg);
        opacity: 0.6;
    }
    50% {
        transform: translateY(-40vh) rotate(180deg);
        opacity: 0.2;
    }
    100% {
        transform: translateY(-80vh) rotate(360deg);
        opacity: 0;
    }
}

/* ===== Candle Flicker Animation ===== */
@keyframes flicker {
    0%, 100% {
        box-shadow: 0 0 10px #FFC700, 0 0 20px #FFC700, 0 0 30px #FFC700;
        transform: translateX(-50%) scale(1);
    }
    25% {
        box-shadow: 0 0 8px #FFC700, 0 0 16px #FFC700, 0 0 24px #FFC700;
        transform: translateX(-50%) scale(0.95) skewX(2deg);
    }
    50% {
        box-shadow: 0 0 12px #FFC700, 0 0 24px #FFC700, 0 0 36px #FFC700;
        transform: translateX(-50%) scale(1.05);
    }
    75% {
        box-shadow: 0 0 9px #FFC700, 0 0 18px #FFC700, 0 0 27px #FFC700;
        transform: translateX(-50%) scale(0.98) skewX(-2deg);
    }
}

/* ===== Scroll Animation ===== */
.scroll-reveal {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.8s ease, transform 0.8s ease;
}

.scroll-reveal.revealed {
    opacity: 1;
    transform: translateY(0);
}

/* ===== Gift Box Animation ===== */
@keyframes openGift {
    0% {
        transform: rotateX(0);
    }
    100% {
        transform: rotateX(-110deg) translateY(-20px);
    }
}

.gift-box.open .gift-lid {
    animation: openGift 1s forwards;
    transform-origin: bottom center;
}

/* ===== Pulse Animation ===== */
@keyframes pulse {
    0% {
        transform: scale(1);
    }
    50% {
        transform: scale(1.05);
    }
    100% {
        transform: scale(1);
    }
}

.pulse {
    animation: pulse 2s infinite;
}

/* ===== Shake Animation ===== */
@keyframes shake {
    0%, 100% {
        transform: translateX(0);
    }
    10%, 30%, 50%, 70%, 90% {
        transform: translateX(-5px);
    }
    20%, 40%, 60%, 80% {
        transform: translateX(5px);
    }
}

.shake {
    animation: shake 0.5s;
}

/* ===== Sparkle Animation ===== */
.sparkle {
    position: absolute;
    width: 5px;
    height: 5px;
    border-radius: 50%;
    background-color: white;
    box-shadow: 0 0 10px white, 0 0 20px var(--primary-color);
    opacity: 0;
    pointer-events: none;
}

@keyframes sparkle {
    0% {
        opacity: 0;
        transform: scale(0);
    }
    50% {
        opacity: 1;
        transform: scale(1);
    }
    100% {
        opacity: 0;
        transform: scale(0);
    }
}

/* ===== Entrance Animations ===== */
@keyframes slideInLeft {
    from {
        transform: translateX(-100px);
        opacity: 0;
    }
    to {
        transform: translateX(0);
        opacity: 1;
    }
}

@keyframes slideInRight {
    from {
        transform: translateX(100px);
        opacity: 0;
    }
    to {
        transform: translateX(0);
        opacity: 1;
    }
}

@keyframes slideInUp {
    from {
        transform: translateY(100px);
        opacity: 0;
    }
    to {
        transform: translateY(0);
        opacity: 1;
    }
}

@keyframes slideInDown {
    from {
        transform: translateY(-100px);
        opacity: 0;
    }
    to {
        transform: translateY(0);
        opacity: 1;
    }
}

.slide-in-left {
    animation: slideInLeft 1s forwards;
}

.slide-in-right {
    animation: slideInRight 1s forwards;
}

.slide-in-up {
    animation: slideInUp 1s forwards;
}

.slide-in-down {
    animation: slideInDown 1s forwards;
}

/* ===== Heart Particle Animations ===== */
.heart-particle {
    position: absolute;
    border-radius: 50%;
    opacity: 0;
    pointer-events: none;
}

@keyframes particleBurst {
    0% {
        transform: translate(0, 0);
        opacity: 1;
    }
    100% {
        opacity: 0;
    }
}

/* ===== Gift Box Animations ===== */
@keyframes floatUp {
    0%, 100% {
        transform: translateY(0) scale(1) rotate(0deg);
    }
    50% {
        transform: translateY(-20px) scale(1.1) rotate(10deg);
    }
}

@keyframes bounce {
    0%, 20%, 50%, 80%, 100% {
        transform: translateY(0);
    }
    40% {
        transform: translateY(-20px);
    }
    60% {
        transform: translateY(-10px);
    }
}

@keyframes twinkle {
    0%, 100% {
        opacity: 1;
        transform: scale(1);
    }
    50% {
        opacity: 0.5;
        transform: scale(0.8);
    }
}

@keyframes wobble {
    0%, 100% {
        transform: translateX(0%);
    }
    15% {
        transform: translateX(-15%) rotate(-5deg);
    }
    30% {
        transform: translateX(10%) rotate(3deg);
    }
    45% {
        transform: translateX(-10%) rotate(-3deg);
    }
    60% {
        transform: translateX(5%) rotate(2deg);
    }
    75% {
        transform: translateX(-5%) rotate(-1deg);
    }
}

.gift-box.open {
    animation: wobble 1s ease-in-out;
}

.gift-reveal.slide-in-up {
    animation: slideInUp 1s forwards, bounce 2s 1s ease-in-out;
}

/* ===== Section Transition Animations ===== */
.section {
    transition: opacity 0.8s ease, transform 0.8s ease;
}

.section:not(.active-section) {
    opacity: 0.8;
}

.active-section {
    opacity: 1;
    transform: translateY(0);
}

.section.fade-out {
    opacity: 0;
    transform: translateY(-30px);
}

.section.fade-in {
    opacity: 1;
    transform: translateY(0);
}

.pulse-wave {
    position: absolute;
    top: 50%;
    left: 50%;
    width: 100%;
    height: 100%;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(255,77,109,0.3) 0%, rgba(255,77,109,0) 70%);
    transform: translate(-50%, -50%) scale(0);
    opacity: 0.8;
    transition: transform 1s ease-out, opacity 1s ease-out;
    pointer-events: none;
}

/* ===== Responsive Animations ===== */
@media (prefers-reduced-motion: reduce) {
    * {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
        scroll-behavior: auto !important;
    }
    
    .floating-hearts::before,
    .floating-hearts::after {
        display: none;
    }
    
    .interactive-heart-container:hover .interactive-heart {
        transform: scale(1.2);
        animation: none;
    }
    
    .pulse-wave, .heart-particle {
        display: none;
    }
}