/* ===== Phase 3 — Popup (after card opens) + Finale (float-up with neon) ===== */

/* Dim backdrop covering the whole #phase-2 view */
.popup-overlay {
    position: absolute;
    inset: 0;
    z-index: 120;
    display: grid;
    place-items: center;
    background: rgba(40, 20, 25, 0);
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.5s var(--ease-in-out), background-color 0.5s var(--ease-in-out);
    padding: 16px;
    /* Allow scrolling if popup is taller than viewport on small screens */
    overflow-y: auto;
}

.popup-overlay.is-visible {
    opacity: 1;
    pointer-events: auto;
    background: rgba(40, 20, 25, 0.55);
    backdrop-filter: blur(3px);
    -webkit-backdrop-filter: blur(3px);
}

.popup-overlay.is-leaving { opacity: 0; }

/* ===== Popup card — modelled on images/popup.png =====
   Cream/beige body, subtle warm border, deep drop shadow.
   Header strip + horizontal body (photo left, text right). */
.popup {
    position: relative;
    width: min(560px, 94vw);
    max-height: 92vh;
    background: linear-gradient(180deg, #f8e5cf 0%, #f1d4b8 100%);
    border: 1.5px solid #b9787c;
    border-radius: 16px;
    box-shadow:
        0 24px 60px rgba(60, 20, 30, 0.55),
        0 4px 12px rgba(60, 20, 30, 0.35),
        inset 0 1px 0 rgba(255, 240, 220, 0.7);
    overflow-y: auto;
    overflow-x: hidden;
    overscroll-behavior: contain;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: thin;
    scrollbar-color: rgba(193, 74, 93, 0.45) transparent;
    transform: scale(0.7) translateY(20px);
    opacity: 0;
    transition: transform 0.55s var(--ease-out-strong), opacity 0.45s var(--ease-in-out);
    -webkit-tap-highlight-color: transparent;
}

.popup::-webkit-scrollbar {
    width: 6px;
}
.popup::-webkit-scrollbar-thumb {
    background: rgba(193, 74, 93, 0.45);
    border-radius: 3px;
}
.popup::-webkit-scrollbar-track {
    background: transparent;
}

.popup-overlay.is-visible .popup {
    transform: scale(1) translateY(0);
    opacity: 1;
}

.popup-overlay.is-leaving .popup {
    transform: scale(0.92) translateY(-8px);
    opacity: 0;
    transition: transform 0.4s var(--ease-in-out), opacity 0.4s var(--ease-in-out);
}

/* Close X button — top-right corner, sits above the header band */
.popup-close {
    position: absolute;
    top: 8px;
    right: 8px;
    z-index: 5;
    width: 34px;
    height: 34px;
    border-radius: 50%;
    border: 1px solid rgba(160, 80, 90, 0.45);
    background: rgba(255, 255, 255, 0.92);
    color: #c14a5d;
    cursor: pointer;
    display: grid;
    place-items: center;
    padding: 0;
    box-shadow: 0 3px 8px rgba(60, 20, 30, 0.28);
    transition: transform 0.18s var(--ease-out-strong), background 0.18s ease, box-shadow 0.18s ease;
    -webkit-tap-highlight-color: transparent;
}

.popup-close svg {
    width: 18px;
    height: 18px;
    display: block;
}

.popup-close:hover,
.popup-close:focus-visible {
    background: #fff;
    transform: scale(1.08) rotate(90deg);
    box-shadow: 0 4px 12px rgba(60, 20, 30, 0.4);
    outline: none;
}

.popup-close:active {
    transform: scale(0.94);
}

/* Decorative header band — lighter cream strip with title + icons */
.popup-header {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    padding: 9px 14px 8px;
    background: linear-gradient(180deg, #fef0d8 0%, #f6dcc0 100%);
    border-bottom: 1px solid rgba(160, 80, 90, 0.35);
    box-shadow: inset 0 -1px 0 rgba(255, 255, 255, 0.4);
}

.popup-title {
    margin: 0;
    font-family: var(--font-script);
    font-size: 36px;
    font-weight: 400;
    letter-spacing: 0.5px;
    color: #c14a5d;
    text-shadow: 0 1px 0 rgba(255, 240, 220, 0.6);
    padding: 0 4px;
}

.popup-deco {
    font-size: 18px;
    color: #d96e80;
    opacity: 0.95;
    line-height: 1;
}

/* Body — horizontal: photo (left) + text (right). Photo is locked in
   aspect ratio + centered; text fills the rest with comfortable padding. */
.popup-body {
    display: flex;
    align-items: stretch;
    gap: 18px;
    padding: 20px 22px 16px;
}

.popup-photo {
    flex: 0 0 38%;
    align-self: center;
    aspect-ratio: 4 / 5;
    border-radius: 10px;
    overflow: hidden;
    border: 2px solid #c98ea0;
    box-shadow: 0 6px 14px rgba(60, 20, 30, 0.28);
    background: #fff;
}

.popup-photo img,
.popup-photo video {
    display: block;
    width: 100%;
    height: 100%;
    object-fit: cover;
    user-select: none;
    -webkit-user-drag: none;
}

.popup-text {
    flex: 1;
    min-width: 0;
    color: #8a4452;
    font-family: "Cormorant Garamond", Georgia, "Times New Roman", serif;
    font-style: italic;
    line-height: 1.5;
    text-align: left;
    display: flex;
    flex-direction: column;
    justify-content: center;
    gap: 12px;
    word-break: break-word;
    overflow-wrap: anywhere;
}

.popup-text p {
    margin: 0;
    font-size: 24px;
    font-weight: 500;
    color: #8a4452;
}

.popup-text p:first-child {
    font-size: 27px;
    color: #c14a5d;
    font-weight: 600;
}

/* Typewriter: each character lives in a <span> the JS injects after the
   popup opens. Hidden by default; the JS un-hides them one at a time.
   The empty trailing caret span gives a subtle blink while typing. */
.popup-text .pt-char {
    opacity: 0;
    transition: opacity 0.06s linear;
}

.popup-text .pt-char.is-on {
    opacity: 1;
}

/* Caret on the currently-typing paragraph */
.popup-text .pt-caret {
    display: inline-block;
    width: 2px;
    height: 1em;
    margin-left: 2px;
    background: currentColor;
    vertical-align: -2px;
    animation: pt-caret-blink 0.7s steps(2, end) infinite;
    opacity: 0.85;
}

@keyframes pt-caret-blink {
    50% { opacity: 0; }
}

/* Heart action button — bottom of the popup, click to dismiss + finale.
   Stays hidden until the typewriter finishes (JS adds .is-ready on .popup),
   then fades in + starts beating to invite the click. */
.popup-heart {
    display: block;
    margin: 4px auto 16px;
    padding: 6px;
    width: 64px;
    height: 64px;
    border: none;
    background: transparent;
    cursor: pointer;
    border-radius: 50%;
    -webkit-tap-highlight-color: transparent;
    animation: popup-heart-beat 1.4s ease-in-out infinite;
    transition:
        transform 0.18s var(--ease-out-strong),
        filter    0.18s ease,
        opacity   0.6s  ease,
        scale     0.6s  var(--ease-out-strong);
    filter: drop-shadow(0 4px 10px rgba(193, 74, 93, 0.35));
    opacity: 0;
    scale: 0.7;
    pointer-events: none;
}

.popup.is-ready .popup-heart {
    opacity: 1;
    scale: 1;
    pointer-events: auto;
}

.popup-heart img {
    display: block;
    width: 100%;
    height: 100%;
    object-fit: contain;
    pointer-events: none;
    user-select: none;
    -webkit-user-drag: none;
}

.popup-heart:hover,
.popup-heart:focus-visible {
    transform: scale(1.15);
    filter: drop-shadow(0 6px 16px rgba(193, 74, 93, 0.6));
    outline: none;
    animation-play-state: paused;
}

.popup-heart:active {
    transform: scale(0.92);
}

@keyframes popup-heart-beat {
    0%, 100% { transform: scale(1);    }
    18%      { transform: scale(1.12); }
    32%      { transform: scale(1);    }
    50%      { transform: scale(1.06); }
    70%      { transform: scale(1);    }
}

/* ===== Finale — love photos + flowers float up from below =====
   Photos wear a single-colour hot-pink neon halo that breathes (dim ↔
   bloom) while they drift slowly upward through a 3-point sway curve. */
.finale-stage {
    position: absolute;
    inset: 0;
    pointer-events: none;
    overflow: hidden;
    z-index: 90;
    contain: layout style paint;
}

.finale-item {
    position: absolute;
    top: 100%;
    left: 50%;
    --fx-start: 0px;
    --fx-end:   0px;
    --fy:       110vh;
    --frot:     0deg;
    --sway:     0px;
    --fdur:     8s;
    --fdelay:   0s;
    opacity: 0;
    will-change: transform, opacity;
    animation:
        finale-rise var(--fdur) cubic-bezier(0.33, 0.05, 0.4, 1) var(--fdelay) forwards,
        finale-fade var(--fdur) linear var(--fdelay) forwards;
}

/* Photo — single-colour soft-red neon tube + halo, gently breathing.
   The neon stays one warm light-red shade; only intensity pulses (dim ↔
   bright) so it reads as a steady glowing love-letter frame. */
.finale-item--photo {
    width: var(--photo-size, 200px);
    border-radius: 18px;
    overflow: hidden;
    border: 3px solid #ff7878;
    aspect-ratio: 4 / 5;
    /* Sits behind the heart cluster (z-index 4) so the heart silhouette
       stays clean while photos drift past in the background. Still above
       drifters (z-index 2) so the neon halo reads clearly. */
    z-index: 3;
    background: #fff;
    /* 3 animations: rise + fade (per finale-item) + neon-pulse (per photo) */
    animation:
        finale-rise  var(--fdur) cubic-bezier(0.33, 0.05, 0.4, 1) var(--fdelay) forwards,
        finale-fade  var(--fdur) linear var(--fdelay) forwards,
        neon-breathe 2.8s ease-in-out infinite;
}

.finale-item--photo img {
    display: block;
    width: 100%;
    height: 100%;
    object-fit: cover;
    user-select: none;
    -webkit-user-drag: none;
    /* Tiny inset white edge so the neon tube sits flush against the photo
       instead of touching colourful pixels directly */
    box-shadow: inset 0 0 0 2px rgba(255, 255, 255, 0.85);
}

.finale-item--flower {
    width: var(--flower-size, 140px);
    height: var(--flower-size, 140px);
    background-size: contain;
    background-repeat: no-repeat;
    background-position: center;
    z-index: 2;
    /* Add a gentle breathing pulse so flowers feel alive as they drift up.
       Individual `scale` property composes cleanly with the `transform`
       shorthand used by finale-rise (translate + rotate). */
    animation:
        finale-rise  var(--fdur) cubic-bezier(0.33, 0.05, 0.4, 1) var(--fdelay) forwards,
        finale-fade  var(--fdur) linear var(--fdelay) forwards,
        flower-pulse var(--pulse-dur, 4s) ease-in-out var(--pulse-delay, 0s) infinite;
}

@keyframes flower-pulse {
    0%, 100% { scale: 1; }
    50%      { scale: 1.05; }
}

/* ===== Heart-formation flowers — 2-phase + permanent hold =====
   Phase A — RISE     ( 0 % →  67 % /  0 → 6 s) : float up from bottom
   Phase B — CONVERGE (67 % → 100 % /  6 → 9 s) : drift to heart point
   Then `forwards` fill keeps the flower locked at its heart-x/heart-y
   indefinitely, while heart-pulse infinite continues the heartbeat. */
.finale-item--heart {
    position: absolute;
    top: 50%;
    left: 50%;
    width: var(--flower-size, 100px);
    height: var(--flower-size, 100px);
    margin-left: calc(-1 * var(--flower-size, 100px) / 2);
    margin-top:  calc(-1 * var(--flower-size, 100px) / 2);
    background-size: contain;
    background-repeat: no-repeat;
    background-position: center;
    opacity: 0;
    /* Heart cluster sits ABOVE photos (z 3) and drifters (z 2) so the
       silhouette reads clearly. */
    z-index: 4;
    will-change: transform, opacity;
    animation:
        heart-form  9s cubic-bezier(0.45, 0.05, 0.4, 0.95) var(--heart-delay, 0ms) forwards,
        heart-pulse 1.6s ease-in-out calc(9s + var(--heart-delay, 0ms)) infinite;
}

@keyframes heart-form {
    /* Phase A — rise from bottom */
    0%   { transform: translate(var(--start-x), var(--start-y));   opacity: 0; }
    5%   { transform: translate(var(--start-x), var(--start-y));   opacity: var(--max-opacity, 1); }
    67%  { transform: translate(var(--mid-x),   var(--mid-y));     opacity: var(--max-opacity, 1); }
    /* Phase B — converge into the heart shape (final, held by `forwards`) */
    100% { transform: translate(var(--heart-x), var(--heart-y));   opacity: var(--max-opacity, 1); }
}

@keyframes heart-pulse {
    0%, 100% { scale: 1;    }
    50%      { scale: 1.07; }
}

/* Rise with a 3-point horizontal wobble (in → out → in) so the item drifts
   like it's caught in a slow breeze instead of going straight up. The
   easeInOut curve on the parent animation keeps the Y motion smooth. */
@keyframes finale-rise {
    0% {
        transform:
            translate(calc(-50% + var(--fx-start)), 0)
            rotate(0deg);
    }
    33% {
        transform:
            translate(
                calc(-50% + var(--fx-start) + (var(--fx-end) - var(--fx-start)) * 0.33 + var(--sway)),
                calc(-1 * var(--fy) * 0.33)
            )
            rotate(calc(var(--frot) * 0.33));
    }
    66% {
        transform:
            translate(
                calc(-50% + var(--fx-start) + (var(--fx-end) - var(--fx-start)) * 0.66 - var(--sway)),
                calc(-1 * var(--fy) * 0.66)
            )
            rotate(calc(var(--frot) * 0.66));
    }
    100% {
        transform:
            translate(calc(-50% + var(--fx-end)), calc(-1 * var(--fy)))
            rotate(var(--frot));
    }
}

@keyframes finale-fade {
    0%   { opacity: 0; }
    10%  { opacity: var(--max-opacity, 1); }
    85%  { opacity: var(--max-opacity, 1); }
    100% { opacity: 0; }
}

/* Single-colour neon breath — soft warm red tube + halo, intensity pulses
   between resting glow (#ff7878) and bloom (#ff9e9e). Multi-layer shadow
   stack (hard 6/14px + soft 28/55px) reads as a classic neon-sign glow
   instead of a fuzzy blur. */
@keyframes neon-breathe {
    0%, 100% {
        border-color: #ff7878;
        box-shadow:
            0 0 6px  rgba(255, 120, 120, 0.95),
            0 0 14px rgba(255, 120, 120, 0.85),
            0 0 28px rgba(255, 120, 120, 0.55),
            0 0 55px rgba(255, 120, 120, 0.30);
    }
    50% {
        border-color: #ff9e9e;
        box-shadow:
            0 0 10px rgba(255, 158, 158, 1),
            0 0 24px rgba(255, 158, 158, 0.95),
            0 0 46px rgba(255, 120, 120, 0.75),
            0 0 88px rgba(255, 120, 120, 0.45);
    }
}

/* Tablet / large phone — keep horizontal layout, font scales slightly down */
@media (max-width: 700px) {
    .popup { width: min(500px, 94vw); }
    .popup-title  { font-size: 30px; }
    .popup-deco   { font-size: 16px; }
    .popup-body   { padding: 18px 18px 14px; gap: 16px; }
    .popup-photo  { flex-basis: 40%; }
    .popup-text   { gap: 10px; }
    .popup-text p { font-size: 21px; }
    .popup-text p:first-child { font-size: 23px; }
    .popup-heart  { width: 58px; height: 58px; margin: 4px auto 14px; }
    .popup-close  { width: 32px; height: 32px; }
}

/* Phone — stack vertically (photo on top, text full width below) so the
   long paragraph reads as a full-width love letter, not a narrow column.
   word-break + overflow-wrap on .popup-text already keep long Vietnamese
   diacritics from overflowing the popup edge. */
@media (max-width: 480px) {
    .popup        { width: min(420px, 94vw); }
    .popup-title  { font-size: 26px; }
    .popup-deco   { font-size: 14px; }
    .popup-header { gap: 4px; padding: 9px 12px 8px; }
    .popup-body {
        flex-direction: column;
        align-items: center;
        padding: 16px 18px 12px;
        gap: 14px;
    }
    .popup-photo {
        flex-basis: auto;
        width: 56%;
        max-width: 200px;
    }
    .popup-text   { text-align: center; gap: 10px; line-height: 1.45; }
    .popup-text p { font-size: 19px; }
    .popup-text p:first-child { font-size: 21px; }
    .popup-heart  { width: 52px; height: 52px; margin: 4px auto 12px; }
}

/* Tiny phones — keep vertical stack, shrink everything just enough */
@media (max-width: 360px) {
    .popup        { width: 94vw; }
    .popup-title  { font-size: 22px; }
    .popup-deco   { font-size: 12px; }
    .popup-header { gap: 3px; padding: 8px 10px 7px; }
    .popup-body   { padding: 14px 14px 10px; gap: 12px; }
    .popup-photo  { width: 52%; max-width: 175px; }
    .popup-text   { gap: 8px; line-height: 1.4; }
    .popup-text p { font-size: 17px; }
    .popup-text p:first-child { font-size: 19px; }
    .popup-heart  { width: 46px; height: 46px; margin: 2px auto 10px; }
}

@media (prefers-reduced-motion: reduce) {
    .popup { transition: opacity 0.4s linear; transform: none; }
    .popup-overlay.is-visible .popup { transform: none; }
    .popup-heart { animation: none; }
    .finale-item { animation-duration: 6s, 6s; }
    .finale-item--photo  { animation-duration: 6s, 6s, 2.8s; }
    .finale-item--flower { animation-duration: 6s, 6s, 4s; }
}