/* ============================================
   WEDDING INVITATION - ANIMATIONS
   Scroll-triggered animations & transitions
   ============================================ */

/* ---- Fade In ---- */
.fade-in {
    opacity: 0;
    transition: opacity 1s ease;
}

.fade-in.visible {
    opacity: 1;
}

/* ---- Fade In Up ---- */
.fade-in-up {
    opacity: 0;
    transform: translateY(40px);
    transition: opacity 0.8s ease, transform 0.8s cubic-bezier(0.4, 0, 0.2, 1);
    transition-delay: var(--delay, 0s);
}

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

/* ---- Fade In Left ---- */
.fade-in-left {
    opacity: 0;
    transform: translateX(-40px);
    transition: opacity 0.8s ease, transform 0.8s cubic-bezier(0.4, 0, 0.2, 1);
}

.fade-in-left.visible {
    opacity: 1;
    transform: translateX(0);
}

/* ---- Fade In Right ---- */
.fade-in-right {
    opacity: 0;
    transform: translateX(40px);
    transition: opacity 0.8s ease, transform 0.8s cubic-bezier(0.4, 0, 0.2, 1);
}

.fade-in-right.visible {
    opacity: 1;
    transform: translateX(0);
}

/* ---- Scale In ---- */
.scale-in {
    opacity: 0;
    transform: scale(0.8);
    transition: opacity 0.6s ease, transform 0.6s cubic-bezier(0.34, 1.56, 0.64, 1);
}

.scale-in.visible {
    opacity: 1;
    transform: scale(1);
}

/* ---- Stagger children animation ---- */
.stagger-children > * {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.5s ease, transform 0.5s ease;
}

.stagger-children.visible > *:nth-child(1) { transition-delay: 0.1s; }
.stagger-children.visible > *:nth-child(2) { transition-delay: 0.2s; }
.stagger-children.visible > *:nth-child(3) { transition-delay: 0.3s; }
.stagger-children.visible > *:nth-child(4) { transition-delay: 0.4s; }
.stagger-children.visible > *:nth-child(5) { transition-delay: 0.5s; }
.stagger-children.visible > *:nth-child(6) { transition-delay: 0.6s; }

.stagger-children.visible > * {
    opacity: 1;
    transform: translateY(0);
}

/* ---- Hero-specific animations ---- */
.hero-content .hero-subtitle {
    animation: fadeSlideDown 1s ease 0.3s both;
}

.hero-content .hero-name[data-animate="slide-right"] {
    animation: slideFromRight 1s ease 0.6s both;
}

.hero-content .hero-ampersand {
    animation: fadeIn 0.8s ease 0.9s both;
}

.hero-content .hero-name[data-animate="slide-left"] {
    animation: slideFromLeft 1s ease 1s both;
}

.hero-content .hero-date-line {
    animation: fadeSlideUp 0.8s ease 1.3s both;
}

.hero-section > .hero-scroll-hint {
    animation: fadeIn 1s ease 2s both;
}

@keyframes fadeSlideDown {
    from {
        opacity: 0;
        transform: translateY(-30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fadeSlideUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes slideFromRight {
    from {
        opacity: 0;
        transform: translateX(60px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes slideFromLeft {
    from {
        opacity: 0;
        transform: translateX(-60px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

/* ---- Parallax-like subtle movement ---- */
@keyframes floatGentle {
    0%, 100% { transform: translateY(0px); }
    50% { transform: translateY(-8px); }
}

.hero-botanical-left {
    animation: swayLeft 6s ease-in-out infinite;
}

.hero-botanical-right {
    animation: swayRight 6s ease-in-out infinite;
}

@keyframes swayLeft {
    0%, 100% { transform: translateX(0) rotate(0deg); }
    50% { transform: translateX(-3px) rotate(-1deg); }
}

@keyframes swayRight {
    0%, 100% { transform: translateX(0) rotate(0deg); }
    50% { transform: translateX(3px) rotate(1deg); }
}

/* ---- Countdown number flip ---- */
.countdown-number {
    transition: transform 0.3s ease;
}

.countdown-number.flip {
    animation: flipNumber 0.3s ease;
}

@keyframes flipNumber {
    0% { transform: scaleY(1); }
    50% { transform: scaleY(0.6); }
    100% { transform: scaleY(1); }
}

/* ---- Timeline line draw ---- */
.timeline.visible::before {
    animation: drawLine 1s ease forwards;
}

@keyframes drawLine {
    from { height: 0; }
    to { height: 100%; }
}

/* ---- Polaroid hover depth ---- */
.polaroid {
    transition: transform 0.5s cubic-bezier(0.34, 1.56, 0.64, 1),
                box-shadow 0.5s ease;
}

/* ---- Color swatch tooltip ---- */
.color-swatch {
    position: relative;
}

.color-swatch::after {
    content: attr(title);
    position: absolute;
    bottom: -28px;
    left: 50%;
    transform: translateX(-50%) translateY(4px);
    font-family: var(--font-sans);
    font-size: 10px;
    color: var(--text-on-dark-muted);
    white-space: nowrap;
    opacity: 0;
    transition: all 0.3s ease;
    pointer-events: none;
}

.color-swatch:hover::after {
    opacity: 1;
    transform: translateX(-50%) translateY(0);
}

/* ---- Page transition ---- */
.invitation-wrapper {
    animation: pageIn 0.8s ease;
}

@keyframes pageIn {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}

/* ---- Reduced motion ---- */
@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }

    .fade-in, .fade-in-up, .fade-in-left, .fade-in-right, .scale-in {
        opacity: 1;
        transform: none;
    }
}