/* ========================================
   Valentine Website - Animations
   All keyframe animations 💕
   ======================================== */

/* ========================================
   Loading Animations
   ======================================== */
@keyframes loadProgress {
    0% {
        width: 0%;
    }

    50% {
        width: 70%;
    }

    100% {
        width: 100%;
    }
}

/* ========================================
   Pulse & Heartbeat
   ======================================== */
@keyframes pulse {

    0%,
    100% {
        transform: scale(1);
        opacity: 1;
    }

    50% {
        transform: scale(1.1);
        opacity: 0.8;
    }
}

@keyframes heartbeat {

    0%,
    100% {
        transform: scale(1);
    }

    10% {
        transform: scale(1.15);
    }

    20% {
        transform: scale(1);
    }

    30% {
        transform: scale(1.2);
    }

    40% {
        transform: scale(1);
    }
}

@keyframes pulseGlow {

    0%,
    100% {
        box-shadow:
            0 0 30px rgba(255, 30, 86, 0.5),
            0 0 60px rgba(255, 30, 86, 0.3),
            inset 0 0 30px rgba(255, 255, 255, 0.1);
    }

    50% {
        box-shadow:
            0 0 50px rgba(255, 30, 86, 0.8),
            0 0 100px rgba(255, 30, 86, 0.5),
            inset 0 0 50px rgba(255, 255, 255, 0.2);
    }
}

/* ========================================
   Fade & Slide Animations
   ======================================== */
@keyframes fadeIn {
    from {
        opacity: 0;
    }

    to {
        opacity: 1;
    }
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fadeInDown {
    from {
        opacity: 0;
        transform: translateY(-30px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fadeInScale {
    from {
        opacity: 0;
        transform: scale(0.8);
    }

    to {
        opacity: 1;
        transform: scale(1);
    }
}

/* ========================================
   Letter & Text Animations
   ======================================== */
@keyframes letterFloat {

    0%,
    100% {
        transform: translateY(0) rotate(0deg);
    }

    25% {
        transform: translateY(-10px) rotate(2deg);
    }

    75% {
        transform: translateY(5px) rotate(-1deg);
    }
}

@keyframes wordReveal {
    from {
        opacity: 0;
        transform: translateY(20px) scale(0.9);
    }

    to {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
}

@keyframes typewriter {
    from {
        width: 0;
    }

    to {
        width: 100%;
    }
}

@keyframes blink {

    0%,
    100% {
        opacity: 1;
    }

    50% {
        opacity: 0;
    }
}

/* ========================================
   Button Animations
   ======================================== */
@keyframes shrinkButton {
    0% {
        transform: scale(1);
    }

    50% {
        transform: scale(0.95);
    }

    100% {
        transform: scale(var(--shrink-scale, 0.9));
    }
}

@keyframes growButton {
    0% {
        transform: scale(1);
    }

    50% {
        transform: scale(1.05);
    }

    100% {
        transform: scale(var(--grow-scale, 1.1));
    }
}

@keyframes buttonShake {

    0%,
    100% {
        transform: translateX(0);
    }

    20% {
        transform: translateX(-5px);
    }

    40% {
        transform: translateX(5px);
    }

    60% {
        transform: translateX(-3px);
    }

    80% {
        transform: translateX(3px);
    }
}

@keyframes runAway {
    0% {
        transform: translate(0, 0);
    }

    100% {
        transform: translate(var(--run-x, 100px), var(--run-y, 0));
    }
}

/* ========================================
   Scroll Indicator
   ======================================== */
@keyframes bounceDown {

    0%,
    100% {
        transform: translateY(0) rotate(45deg);
        opacity: 1;
    }

    50% {
        transform: translateY(10px) rotate(45deg);
        opacity: 0.5;
    }
}

/* ========================================
   Particle Animations
   ======================================== */
@keyframes float-up {
    0% {
        transform: translateY(100vh) rotate(0deg);
        opacity: 0;
    }

    10% {
        opacity: 1;
    }

    90% {
        opacity: 1;
    }

    100% {
        transform: translateY(-100px) rotate(720deg);
        opacity: 0;
    }
}

@keyframes float-gentle {

    0%,
    100% {
        transform: translate(0, 0) rotate(0deg);
    }

    25% {
        transform: translate(10px, -20px) rotate(5deg);
    }

    50% {
        transform: translate(-5px, -10px) rotate(-3deg);
    }

    75% {
        transform: translate(-15px, -25px) rotate(2deg);
    }
}

@keyframes sparkle {

    0%,
    100% {
        transform: scale(1);
        opacity: 1;
    }

    50% {
        transform: scale(1.5);
        opacity: 0.5;
    }
}

@keyframes float-side {
    0% {
        transform: translateX(0) translateY(0) rotate(0deg);
    }

    50% {
        transform: translateX(var(--float-x, 20px)) translateY(var(--float-y, -30px)) rotate(180deg);
    }

    100% {
        transform: translateX(0) translateY(0) rotate(360deg);
    }
}

/* ========================================
   Confetti Animations
   ======================================== */
@keyframes confetti-fall {
    0% {
        transform: translateY(-100px) rotate(0deg);
        opacity: 1;
    }

    100% {
        transform: translateY(100vh) rotate(720deg);
        opacity: 0;
    }
}

@keyframes confetti-shake {

    0%,
    100% {
        transform: translateX(0);
    }

    25% {
        transform: translateX(15px);
    }

    75% {
        transform: translateX(-15px);
    }
}

/* ========================================
   Firework Animations
   ======================================== */
@keyframes firework-explode {
    0% {
        transform: scale(0);
        opacity: 1;
    }

    50% {
        opacity: 1;
    }

    100% {
        transform: scale(1);
        opacity: 0;
    }
}

@keyframes firework-particle {
    0% {
        transform: translate(0, 0);
        opacity: 1;
    }

    100% {
        transform: translate(var(--end-x), var(--end-y));
        opacity: 0;
    }
}

/* ========================================
   Celebration Animations
   ======================================== */
@keyframes celebrateTitle {
    0% {
        opacity: 0;
        transform: scale(0.5) rotate(-10deg);
    }

    50% {
        transform: scale(1.1) rotate(5deg);
    }

    100% {
        opacity: 1;
        transform: scale(1) rotate(0deg);
    }
}

@keyframes rainHearts {
    0% {
        transform: translateY(-100px) rotate(0deg);
        opacity: 1;
    }

    100% {
        transform: translateY(100vh) rotate(360deg);
        opacity: 0.7;
    }
}

/* ========================================
   Glow Effects
   ======================================== */
@keyframes glow {

    0%,
    100% {
        text-shadow:
            0 0 10px rgba(255, 30, 86, 0.5),
            0 0 20px rgba(255, 30, 86, 0.3);
    }

    50% {
        text-shadow:
            0 0 20px rgba(255, 30, 86, 0.8),
            0 0 40px rgba(255, 30, 86, 0.5),
            0 0 60px rgba(255, 30, 86, 0.3);
    }
}

@keyframes glowPulse {

    0%,
    100% {
        box-shadow: 0 0 5px rgba(255, 30, 86, 0.5);
    }

    50% {
        box-shadow: 0 0 20px rgba(255, 30, 86, 0.8), 0 0 30px rgba(255, 30, 86, 0.5);
    }
}

/* ========================================
   Theme Transition
   ======================================== */
@keyframes themeChange {
    0% {
        filter: hue-rotate(0deg);
    }

    100% {
        filter: hue-rotate(var(--hue-shift, 30deg));
    }
}

/* ========================================
   Special Effects
   ======================================== */
@keyframes shake {

    0%,
    100% {
        transform: translateX(0);
    }

    10% {
        transform: translateX(-10px) rotate(-1deg);
    }

    20% {
        transform: translateX(10px) rotate(1deg);
    }

    30% {
        transform: translateX(-10px) rotate(-1deg);
    }

    40% {
        transform: translateX(10px) rotate(1deg);
    }

    50% {
        transform: translateX(-5px) rotate(-0.5deg);
    }

    60% {
        transform: translateX(5px) rotate(0.5deg);
    }

    70% {
        transform: translateX(-5px) rotate(-0.5deg);
    }

    80% {
        transform: translateX(5px) rotate(0.5deg);
    }

    90% {
        transform: translateX(-2px);
    }
}

@keyframes zoom-in-out {

    0%,
    100% {
        transform: scale(1);
    }

    50% {
        transform: scale(1.2);
    }
}

@keyframes rotate-slow {
    from {
        transform: rotate(0deg);
    }

    to {
        transform: rotate(360deg);
    }
}

/* ========================================
   Envelope Special
   ======================================== */
@keyframes envelopeGlow {

    0%,
    100% {
        box-shadow: 0 10px 40px rgba(0, 0, 0, 0.4);
    }

    50% {
        box-shadow:
            0 10px 40px rgba(0, 0, 0, 0.4),
            0 0 30px rgba(255, 30, 86, 0.3);
    }
}

@keyframes sealBreak {
    0% {
        transform: scale(1) rotate(0deg);
        opacity: 1;
    }

    50% {
        transform: scale(1.2) rotate(180deg);
        opacity: 0.5;
    }

    100% {
        transform: scale(0) rotate(360deg);
        opacity: 0;
    }
}