* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

:root {
    --bg-cream: #fff4e1;
    --bg-peach: #ffd3ab;
    --bg-mint: #c9efe2;
    --ink-main: #17303c;
    --ink-soft: #40606d;
    --accent-coral: #ff715b;
    --accent-orange: #ff9d5c;
    --accent-gold: #ffd166;
    --accent-teal: #22a39f;
    --card: rgba(255, 255, 255, 0.72);
    --card-edge: rgba(23, 48, 60, 0.12);
    --shadow: 0 16px 34px rgba(28, 43, 55, 0.16);
}

html,
body {
    width: 100%;
    min-height: 100%;
}

body {
    font-family: "Sora", sans-serif;
    color: var(--ink-main);
    background:
        radial-gradient(circle at 12% 14%, rgba(255, 123, 93, 0.34), transparent 38%),
        radial-gradient(circle at 86% 86%, rgba(53, 185, 170, 0.28), transparent 40%),
        linear-gradient(160deg, var(--bg-cream) 0%, var(--bg-peach) 45%, var(--bg-mint) 100%);
    overflow-x: hidden;
    position: relative;
    padding-bottom: calc(env(safe-area-inset-bottom) + 5.7rem);
}

.lock-screen {
    position: fixed;
    inset: 0;
    z-index: 30;
    display: grid;
    place-items: center;
    padding: 1rem;
    background:
        radial-gradient(circle at 14% 18%, rgba(255, 113, 91, 0.25), transparent 40%),
        radial-gradient(circle at 87% 80%, rgba(34, 163, 159, 0.2), transparent 43%),
        rgba(16, 35, 43, 0.42);
    backdrop-filter: blur(10px);
    transition: opacity 320ms ease, visibility 320ms ease;
}

.lock-screen.is-hidden {
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
}

.lock-card {
    width: min(100%, 370px);
    border-radius: 28px;
    border: 1px solid rgba(23, 48, 60, 0.18);
    background:
        radial-gradient(circle at 95% 0%, rgba(255, 209, 102, 0.34), transparent 34%),
        rgba(255, 255, 255, 0.88);
    box-shadow: 0 18px 36px rgba(22, 37, 48, 0.22);
    padding: 1.15rem 1rem 1rem;
    display: grid;
    gap: 0.68rem;
}

.lock-chip {
    width: fit-content;
    font-size: 0.72rem;
    font-weight: 700;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: #3b6f68;
}

.lock-card h2 {
    font-family: "Fraunces", serif;
    font-size: clamp(1.5rem, 7vw, 2rem);
    line-height: 1.04;
    color: #143240;
}

.lock-note {
    font-size: 0.9rem;
    line-height: 1.48;
    color: #355a68;
}

.lock-label {
    font-size: 0.82rem;
    font-weight: 600;
    color: #2c4f5d;
}

.lock-input {
    width: 100%;
    border: 1px solid rgba(23, 48, 60, 0.22);
    border-radius: 14px;
    background: rgba(255, 255, 255, 0.76);
    color: #143240;
    font: inherit;
    padding: 0.72rem 0.78rem;
    outline: none;
    transition: border-color 180ms ease, box-shadow 200ms ease;
}

.lock-input::placeholder {
    color: rgba(20, 50, 64, 0.5);
}

.lock-input:focus {
    border-color: rgba(34, 163, 159, 0.62);
    box-shadow: 0 0 0 3px rgba(34, 163, 159, 0.2);
}

.lock-btn {
    width: fit-content;
}

.lock-error {
    min-height: 1.12rem;
    font-size: 0.82rem;
    color: #9a3357;
}

body.is-locked {
    overflow: hidden;
}

body.is-locked .app,
body.is-locked .action-dock {
    opacity: 0.12;
    filter: blur(8px);
    pointer-events: none;
    user-select: none;
}

body.is-locked .backdrop {
    filter: blur(1px);
}

body.is-locked .fx-layer {
    display: none;
}

.backdrop {
    position: fixed;
    inset: 0;
    pointer-events: none;
    z-index: 0;
}

.blob {
    position: absolute;
    border-radius: 999px;
    filter: blur(20px);
    opacity: 0.84;
    animation: drift 9s ease-in-out infinite alternate;
}

.blob-coral {
    width: 62vw;
    height: 62vw;
    left: -22vw;
    top: -10vw;
    background: radial-gradient(circle, rgba(255, 113, 91, 0.56), transparent 72%);
}

.blob-mint {
    width: 58vw;
    height: 58vw;
    right: -20vw;
    top: 35vh;
    background: radial-gradient(circle, rgba(34, 163, 159, 0.46), transparent 74%);
    animation-delay: 2s;
}

.blob-gold {
    width: 54vw;
    height: 54vw;
    left: 32vw;
    bottom: -15vw;
    background: radial-gradient(circle, rgba(255, 209, 102, 0.46), transparent 74%);
    animation-delay: 1.4s;
}

.grain {
    position: absolute;
    inset: 0;
    opacity: 0.22;
    background-image:
        radial-gradient(circle at 25% 20%, rgba(255, 255, 255, 0.5) 0 1px, transparent 2px),
        radial-gradient(circle at 70% 65%, rgba(30, 69, 82, 0.13) 0 1px, transparent 2px);
    background-size: 180px 180px;
    animation: grain-move 15s linear infinite;
}

.bokeh {
    position: absolute;
    inset: 0;
    overflow: hidden;
    opacity: 0.96;
    z-index: 2;
    mix-blend-mode: screen;
    filter: saturate(1.24);
}

.bokeh-light {
    position: absolute;
    left: 50%;
    bottom: -34vh;
    width: var(--size, 72px);
    height: var(--size, 72px);
    border-radius: 999px;
    opacity: 0;
    background:
        radial-gradient(circle at 35% 35%, rgba(255, 255, 255, 0.96), var(--tone, rgba(255, 161, 120, 0.62)) 56%, transparent 74%);
    filter: blur(2px);
    transform: translate3d(0, 0, 0) scale(0.58);
    will-change: transform, opacity;
    animation: bokeh-rise var(--dur, 12.5s) linear infinite;
    animation-delay: var(--delay, 0s);
}

.bokeh-light:nth-child(1) {
    left: 8%;
    --size: 76px;
    --dur: 12.4s;
    --delay: -1.2s;
    --tone: rgba(255, 128, 129, 0.68);
}

.bokeh-light:nth-child(2) {
    left: 18%;
    --size: 110px;
    --dur: 15.4s;
    --delay: -9.4s;
    --tone: rgba(255, 193, 117, 0.66);
}

.bokeh-light:nth-child(3) {
    left: 34%;
    --size: 72px;
    --dur: 12.9s;
    --delay: -4.6s;
    --tone: rgba(111, 222, 203, 0.64);
}

.bokeh-light:nth-child(4) {
    left: 47%;
    --size: 128px;
    --dur: 17.6s;
    --delay: -12.1s;
    --tone: rgba(255, 145, 102, 0.62);
}

.bokeh-light:nth-child(5) {
    left: 62%;
    --size: 88px;
    --dur: 14.2s;
    --delay: -3.3s;
    --tone: rgba(136, 208, 246, 0.62);
}

.bokeh-light:nth-child(6) {
    left: 74%;
    --size: 106px;
    --dur: 16.2s;
    --delay: -10.5s;
    --tone: rgba(255, 185, 134, 0.68);
}

.bokeh-light:nth-child(7) {
    left: 86%;
    --size: 70px;
    --dur: 11.7s;
    --delay: -7.8s;
    --tone: rgba(124, 228, 191, 0.64);
}

.bokeh-light:nth-child(8) {
    left: 94%;
    --size: 92px;
    --dur: 18.5s;
    --delay: -14.6s;
    --tone: rgba(255, 153, 181, 0.58);
}

.heart-dust {
    position: absolute;
    inset: 0;
    z-index: 3;
    pointer-events: none;
    overflow: hidden;
}

.dust-heart {
    position: absolute;
    left: 50%;
    top: 50%;
    opacity: 0;
    color: rgba(255, 105, 152, 0.56);
    text-shadow: 0 1px 7px rgba(255, 123, 170, 0.26);
    transform: translate3d(0, 0, 0) scale(0.72);
    animation: heart-dust-fade var(--dur, 4.8s) ease-in-out infinite;
    animation-delay: var(--delay, 0s);
    will-change: transform, opacity;
}

.dust-heart::before {
    content: "❤";
    font-size: var(--size, 10px);
    line-height: 1;
}

.dust-heart:nth-child(1) {
    left: 8%;
    top: 22%;
    --size: 8px;
    --dur: 4.6s;
    --delay: -0.2s;
}

.dust-heart:nth-child(2) {
    left: 16%;
    top: 58%;
    --size: 10px;
    --dur: 5.1s;
    --delay: -2.4s;
}

.dust-heart:nth-child(3) {
    left: 25%;
    top: 37%;
    --size: 9px;
    --dur: 4.9s;
    --delay: -3.6s;
}

.dust-heart:nth-child(4) {
    left: 34%;
    top: 76%;
    --size: 8px;
    --dur: 5.4s;
    --delay: -1.4s;
}

.dust-heart:nth-child(5) {
    left: 43%;
    top: 27%;
    --size: 11px;
    --dur: 5.3s;
    --delay: -4.1s;
}

.dust-heart:nth-child(6) {
    left: 51%;
    top: 66%;
    --size: 9px;
    --dur: 4.8s;
    --delay: -2.8s;
}

.dust-heart:nth-child(7) {
    left: 59%;
    top: 44%;
    --size: 8px;
    --dur: 5.6s;
    --delay: -1.1s;
}

.dust-heart:nth-child(8) {
    left: 68%;
    top: 19%;
    --size: 10px;
    --dur: 4.7s;
    --delay: -3.3s;
}

.dust-heart:nth-child(9) {
    left: 76%;
    top: 62%;
    --size: 9px;
    --dur: 5.2s;
    --delay: -0.8s;
}

.dust-heart:nth-child(10) {
    left: 84%;
    top: 34%;
    --size: 11px;
    --dur: 5.7s;
    --delay: -4.9s;
}

.dust-heart:nth-child(11) {
    left: 91%;
    top: 74%;
    --size: 8px;
    --dur: 4.5s;
    --delay: -2.2s;
}

.dust-heart:nth-child(12) {
    left: 95%;
    top: 52%;
    --size: 9px;
    --dur: 5.9s;
    --delay: -3.7s;
}

.love-vines {
    position: absolute;
    inset: 0;
    z-index: 4;
    pointer-events: none;
}

.vine {
    position: absolute;
    top: -3vh;
    bottom: -12vh;
    width: 2.4rem;
    transform-origin: top center;
    filter: drop-shadow(0 0 8px rgba(255, 95, 147, 0.22));
    opacity: 0.86;
}

.vine-left {
    left: calc(env(safe-area-inset-left) + 0.08rem);
    animation: vine-sway-left 7.8s ease-in-out infinite;
}

.vine-right {
    right: calc(env(safe-area-inset-right) + 0.08rem);
    animation: vine-sway-right 8.4s ease-in-out infinite;
}

.vine-stem {
    position: absolute;
    left: 50%;
    top: 0;
    width: 0.19rem;
    height: 118%;
    border-radius: 999px;
    background:
        repeating-linear-gradient(180deg,
            rgba(229, 255, 227, 0.3) 0 8px,
            rgba(41, 124, 85, 0.56) 8px 16px),
        linear-gradient(180deg, rgba(111, 206, 160, 0.86), rgba(36, 93, 68, 0.88));
    box-shadow: 0 0 10px rgba(112, 196, 155, 0.22);
    transform: translateX(-50%) scaleY(0);
    transform-origin: top center;
    animation: vine-grow 1.35s cubic-bezier(0.26, 0.82, 0.22, 1) forwards;
}

.vine-leaf {
    position: absolute;
    left: 50%;
    top: var(--y);
    width: 0.92rem;
    height: 0.54rem;
    border-radius: 100% 0 100% 0;
    background: linear-gradient(130deg, rgba(223, 255, 212, 0.96), rgba(91, 181, 128, 0.78));
    box-shadow: inset 0 -1px 0 rgba(36, 100, 71, 0.33), 0 2px 6px rgba(15, 53, 36, 0.25);
    opacity: 0;
    transform: translate(var(--tx), 0) rotate(var(--rot)) scale(0.25);
    animation: leaf-grow 640ms cubic-bezier(0.24, 0.86, 0.24, 1) forwards;
    animation-delay: var(--delay);
}

.vine-left .vine-leaf:nth-child(even) {
    --tx: 0.45rem;
    --rot: 34deg;
}

.vine-left .vine-leaf:nth-child(odd) {
    --tx: -1.02rem;
    --rot: -148deg;
}

.vine-right .vine-leaf:nth-child(even) {
    --tx: -1.02rem;
    --rot: -148deg;
}

.vine-right .vine-leaf:nth-child(odd) {
    --tx: 0.45rem;
    --rot: 34deg;
}

.vine .vine-leaf:nth-child(2) {
    --y: 12%;
    --delay: 0.24s;
}

.vine .vine-leaf:nth-child(3) {
    --y: 21%;
    --delay: 0.34s;
}

.vine .vine-leaf:nth-child(4) {
    --y: 30%;
    --delay: 0.44s;
}

.vine .vine-leaf:nth-child(5) {
    --y: 40%;
    --delay: 0.56s;
}

.vine .vine-leaf:nth-child(6) {
    --y: 50%;
    --delay: 0.68s;
}

.vine .vine-leaf:nth-child(7) {
    --y: 61%;
    --delay: 0.8s;
}

.vine .vine-leaf:nth-child(8) {
    --y: 72%;
    --delay: 0.94s;
}

.vine .vine-leaf:nth-child(9) {
    --y: 83%;
    --delay: 1.06s;
}

.vine .vine-leaf:nth-child(10) {
    --y: 93%;
    --delay: 1.2s;
}

.app {
    position: relative;
    z-index: 1;
    width: min(100%, 430px);
    margin: 0 auto;
    padding: calc(env(safe-area-inset-top) + 0.9rem) 0.88rem 1.2rem;
    display: grid;
    gap: 0.9rem;
}

.card {
    background: var(--card);
    border: 1px solid var(--card-edge);
    border-radius: 28px;
    box-shadow: var(--shadow);
    backdrop-filter: blur(8px);
    padding: 1rem 0.92rem;
}

.hero {
    position: relative;
    overflow: hidden;
    background:
        radial-gradient(circle at 92% 8%, rgba(255, 209, 102, 0.46), transparent 44%),
        radial-gradient(circle at 0% 90%, rgba(34, 163, 159, 0.28), transparent 52%),
        rgba(255, 255, 255, 0.78);
    display: grid;
    gap: 0.86rem;
}

.hero::after {
    content: "";
    position: absolute;
    right: 0.8rem;
    top: 0.7rem;
    width: 3.7rem;
    height: 3.7rem;
    border-radius: 999px;
    background: radial-gradient(circle, rgba(255, 113, 91, 0.22), transparent 72%);
    pointer-events: none;
}

.hero-chip {
    width: fit-content;
    font-size: 0.76rem;
    font-weight: 600;
    letter-spacing: 0.03em;
    color: #7f3b2f;
    padding: 0.35rem 0.58rem;
    border-radius: 999px;
    border: 1px solid rgba(127, 59, 47, 0.24);
    background: rgba(255, 255, 255, 0.74);
}

.hero h1,
.section-head h2 {
    font-family: "Fraunces", serif;
    line-height: 1.02;
    text-wrap: balance;
}

.hero h1 {
    font-size: clamp(1.82rem, 9vw, 2.35rem);
    color: #162f3d;
}

.hero-copy {
    font-size: 0.92rem;
    line-height: 1.58;
    color: var(--ink-soft);
}

.section-head {
    display: grid;
    gap: 0.26rem;
    margin-bottom: 0.76rem;
}

.eyebrow {
    font-size: 0.72rem;
    text-transform: uppercase;
    letter-spacing: 0.12em;
    color: #39756f;
    font-weight: 700;
}

.section-head h2 {
    font-size: clamp(1.45rem, 7vw, 1.92rem);
    color: #143240;
}

.photo-carousel {
    display: grid;
    gap: 0.58rem;
}

.photo-viewport {
    position: relative;
    width: 100%;
    aspect-ratio: 4 / 5;
    border-radius: 20px;
    border: 1px solid rgba(23, 48, 60, 0.12);
    overflow: hidden;
    background:
        linear-gradient(150deg, rgba(255, 157, 92, 0.3), rgba(34, 163, 159, 0.28));
    box-shadow: 0 10px 24px rgba(28, 43, 55, 0.15);
}

.photo-track {
    position: relative;
    width: 100%;
    height: 100%;
}

.photo-card {
    position: absolute;
    inset: 0;
    opacity: 0;
    transform: scale(1.035);
    pointer-events: none;
    transition: opacity 460ms ease, transform 620ms ease;
}

.photo-card.is-active {
    opacity: 1;
    transform: scale(1);
    pointer-events: auto;
}

.photo-frame {
    width: 100%;
    height: 100%;
}

.photo-frame img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
}

.bubble-heart-layer {
    position: absolute;
    inset: 0;
    z-index: 4;
    pointer-events: none;
    overflow: hidden;
}

.photo-bubble {
    position: absolute;
    left: 0.7rem;
    bottom: 0.7rem;
    width: min(86%, 15.6rem);
    border-radius: 16px;
    border: 1px solid rgba(255, 255, 255, 0.45);
    background: rgba(255, 255, 255, 0.86);
    color: #2f5261;
    font-size: 0.8rem;
    line-height: 1.38;
    padding: 0.5rem 0.62rem;
    box-shadow: 0 8px 18px rgba(20, 38, 48, 0.22);
    opacity: 0;
    transform: translateY(14px);
    transition: opacity 350ms ease 110ms, transform 420ms ease 110ms;
    z-index: 5;
}

.photo-bubble::after {
    content: "";
    position: absolute;
    left: 0.7rem;
    bottom: -0.34rem;
    width: 0.62rem;
    height: 0.62rem;
    border-right: 1px solid rgba(255, 255, 255, 0.45);
    border-bottom: 1px solid rgba(255, 255, 255, 0.45);
    background: rgba(255, 255, 255, 0.86);
    transform: rotate(45deg);
}

.photo-card.is-active .photo-bubble {
    opacity: 1;
    transform: translateY(0);
}

.photo-dots {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.36rem;
}

.photo-dot {
    width: 0.4rem;
    height: 0.4rem;
    border: 0;
    border-radius: 999px;
    background: rgba(23, 48, 60, 0.23);
    cursor: pointer;
    transition: width 220ms ease, background 220ms ease;
}

.photo-dot.is-active {
    width: 1.08rem;
    background: linear-gradient(115deg, #ff715b 0%, #ffb347 100%);
}

.bubble-heart {
    position: absolute;
    left: 0;
    top: 0;
    transform: translate(var(--x), var(--y)) scale(0.45);
    opacity: 0;
    font-size: var(--size, 13px);
    line-height: 1;
    color: #ff5d83;
    text-shadow: 0 2px 8px rgba(255, 84, 130, 0.35);
    filter: saturate(1.08);
    will-change: transform, opacity;
    animation: bubble-heart-float var(--dur, 780ms) cubic-bezier(0.22, 0.78, 0.26, 1) forwards;
    animation-delay: var(--delay, 0ms);
}

.photo-empty {
    margin-top: 0.2rem;
    font-size: 0.82rem;
    line-height: 1.45;
    color: #84514a;
    background: rgba(255, 255, 255, 0.62);
    border: 1px dashed rgba(132, 81, 74, 0.3);
    border-radius: 14px;
    padding: 0.65rem 0.7rem;
}

.letter-paper {
    display: grid;
    gap: 0.62rem;
    padding: 0.84rem 0.78rem;
    border-radius: 18px;
    border: 1px solid rgba(23, 48, 60, 0.15);
    background:
        linear-gradient(180deg, rgba(255, 255, 255, 0.86), rgba(255, 250, 242, 0.8));
}

.letter-paper p {
    font-size: 0.88rem;
    line-height: 1.58;
    color: #315667;
    opacity: 0;
    transform: translateY(12px);
    filter: blur(3px);
}

.letter-paper.is-open p {
    animation: reveal-line 640ms cubic-bezier(0.2, 0.76, 0.24, 1) forwards;
}

.letter-paper.is-open p:nth-child(1) {
    animation-delay: 70ms;
}

.letter-paper.is-open p:nth-child(2) {
    animation-delay: 190ms;
}

.letter-paper.is-open p:nth-child(3) {
    animation-delay: 310ms;
}

.letter-paper.is-open p:nth-child(4) {
    animation-delay: 430ms;
}

.letter-paper.is-open p:nth-child(5) {
    animation-delay: 560ms;
}

.letter-sign {
    font-weight: 600;
    color: #1f4150;
}

.cake-wrap {
    display: grid;
    gap: 0.7rem;
    margin: 0.1rem 0 0.75rem;
}

.cake-meta {
    display: grid;
    gap: 0.18rem;
}

.cake-kicker {
    font-size: 0.71rem;
    font-weight: 700;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: #3d6d61;
}

.cake-note {
    font-size: 0.8rem;
    line-height: 1.35;
    color: #496370;
}

.cake-scene {
    position: relative;
    width: 100%;
    aspect-ratio: 4 / 3;
    border-radius: 20px;
    border: 1px solid rgba(23, 48, 60, 0.15);
    overflow: hidden;
    background:
        radial-gradient(circle at 14% 12%, rgba(255, 183, 131, 0.32), transparent 38%),
        radial-gradient(circle at 84% 92%, rgba(111, 206, 160, 0.3), transparent 44%),
        linear-gradient(160deg, rgba(255, 250, 238, 0.88), rgba(243, 255, 251, 0.82));
    box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.72), 0 10px 22px rgba(20, 37, 50, 0.14);
}

.cake-halo {
    position: absolute;
    left: 50%;
    bottom: 1.9rem;
    width: 12.4rem;
    height: 2.6rem;
    transform: translateX(-50%);
    border-radius: 999px;
    background: radial-gradient(circle, rgba(255, 159, 115, 0.3), rgba(255, 159, 115, 0) 72%);
    filter: blur(4px);
    pointer-events: none;
    transition: opacity 260ms ease;
}

.cake-plate {
    position: absolute;
    left: 50%;
    bottom: 0.82rem;
    width: min(86%, 18.4rem);
    height: 1.15rem;
    transform: translateX(-50%);
    border-radius: 999px;
    background: linear-gradient(180deg, rgba(255, 255, 255, 0.92), rgba(218, 235, 238, 0.86));
    box-shadow: 0 5px 10px rgba(15, 45, 47, 0.15), inset 0 1px 0 rgba(255, 255, 255, 0.8);
    transition: opacity 260ms ease;
}

.blow-wave {
    position: absolute;
    left: -42%;
    top: 39%;
    width: 38%;
    height: 20%;
    border-radius: 999px;
    background:
        linear-gradient(90deg,
            rgba(255, 255, 255, 0),
            rgba(234, 246, 252, 0.74) 34%,
            rgba(226, 239, 245, 0));
    filter: blur(2.2px);
    opacity: 0;
    pointer-events: none;
}

.cake-art {
    position: absolute;
    left: 50%;
    bottom: 0.58rem;
    width: min(92%, 18.8rem);
    aspect-ratio: 1219 / 1055;
    transform: translateX(-50%);
    height: auto;
}

.cake-photo {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    object-fit: contain;
    object-position: center 64%;
    opacity: 0;
    transform: translateY(6px) scale(0.96);
    transition: opacity 420ms ease, transform 520ms ease;
    filter: drop-shadow(0 12px 16px rgba(23, 35, 49, 0.18));
}

.cake-illustration {
    position: absolute;
    left: 0;
    right: 0;
    bottom: 0;
    transition: opacity 360ms ease, transform 420ms ease;
}

.cake-art.has-photo .cake-photo {
    opacity: 1;
    transform: translateY(0) scale(1);
}

.cake-art.has-photo .cake-illustration {
    opacity: 0;
    transform: scale(0.9);
}

.cake-art:not(.has-photo) .photo-candle-layer {
    display: none;
}

.cake-scene.is-photo-mode .cake-halo,
.cake-scene.is-photo-mode .cake-plate {
    opacity: 0;
}

.cake-scene.is-photo-mode .cake-art {
    bottom: 0.42rem;
    width: min(94%, 19rem);
}

.cake-layer {
    border-radius: 14px;
    border: 1px solid rgba(155, 89, 65, 0.22);
    position: relative;
    overflow: hidden;
}

.cake-layer::before {
    content: "";
    position: absolute;
    inset: 0;
    pointer-events: none;
    background: linear-gradient(180deg, rgba(255, 255, 255, 0.25), transparent 40%);
}

.cake-layer-top {
    height: 2.66rem;
    border-radius: 18px 18px 11px 11px;
    background:
        radial-gradient(circle at 20% 18%, rgba(255, 255, 255, 0.72), transparent 42%),
        repeating-linear-gradient(90deg, rgba(255, 173, 205, 0.15) 0 10px, rgba(255, 217, 137, 0.17) 10px 20px),
        linear-gradient(180deg, #ffd8e8 0%, #ffc7dc 100%);
}

.cake-layer-top::after {
    content: "";
    position: absolute;
    left: -2%;
    right: -2%;
    bottom: -0.3rem;
    height: 0.8rem;
    background:
        radial-gradient(circle at 8% 40%, #ffb9d5 0 18%, transparent 20%),
        radial-gradient(circle at 24% 45%, #ffc7de 0 20%, transparent 22%),
        radial-gradient(circle at 42% 38%, #ffb9d5 0 19%, transparent 21%),
        radial-gradient(circle at 60% 45%, #ffc7de 0 20%, transparent 22%),
        radial-gradient(circle at 78% 39%, #ffb9d5 0 20%, transparent 22%),
        radial-gradient(circle at 94% 44%, #ffc7de 0 20%, transparent 22%);
    filter: drop-shadow(0 2px 2px rgba(161, 75, 126, 0.14));
}

.cake-layer-mid {
    margin: 0.28rem auto 0;
    width: 92%;
    height: 2.58rem;
    background:
        repeating-linear-gradient(90deg, rgba(245, 180, 127, 0.16) 0 11px, rgba(255, 225, 170, 0.2) 11px 22px),
        linear-gradient(180deg, #f3bc7c 0%, #e8a75f 100%);
}

.cake-layer-bottom {
    margin: 0.28rem auto 0;
    width: 98%;
    height: 2.64rem;
    border-radius: 11px 11px 17px 17px;
    background:
        repeating-linear-gradient(90deg, rgba(255, 211, 162, 0.15) 0 12px, rgba(240, 182, 120, 0.18) 12px 24px),
        linear-gradient(180deg, #d49756 0%, #c88545 100%);
}

.photo-candle-layer {
    position: absolute;
    inset: 0;
    z-index: 6;
    pointer-events: none;
}

.cake-scene.is-photo-mode .photo-candle-layer {
    left: 14%;
    right: 14%;
    top: 16%;
    bottom: 32%;
}

.photo-candle {
    position: absolute;
    left: var(--x);
    top: var(--y);
    width: 1rem;
    height: 1rem;
    transform: translate(-50%, -50%);
}

.photo-flame {
    position: absolute;
    left: 50%;
    top: 50%;
    width: 0.58rem;
    height: 0.9rem;
    transform: translate(-50%, -50%);
    border-radius: 100% 100% 78% 78%;
    background:
        radial-gradient(circle at 50% 68%, rgba(255, 255, 210, 0.98) 0 34%, rgba(255, 188, 84, 0.95) 52%, rgba(255, 117, 75, 0.84) 86%, transparent 100%);
    filter: drop-shadow(0 0 8px rgba(255, 174, 69, 0.72));
    transform-origin: 50% 90%;
    animation: flame-flicker 640ms ease-in-out infinite;
}

.photo-flame::before {
    content: "";
    position: absolute;
    left: 50%;
    top: -0.1rem;
    width: 1rem;
    height: 1.1rem;
    transform: translateX(-50%);
    border-radius: 100%;
    background: radial-gradient(circle, rgba(255, 206, 105, 0.6), rgba(255, 164, 73, 0));
    filter: blur(1px);
}

.photo-smoke {
    position: absolute;
    left: 50%;
    top: 50%;
    width: 0.76rem;
    height: 0.76rem;
    border-radius: 999px;
    opacity: 0;
    filter: blur(1.3px);
    background: radial-gradient(circle, rgba(236, 243, 244, 0.9), rgba(200, 208, 212, 0.16) 68%, transparent 100%);
}

.photo-smoke-a {
    --sx: -10px;
    --delay: 40ms;
}

.photo-smoke-b {
    --sx: 11px;
    --delay: 180ms;
}

.smoke-message {
    position: absolute;
    box-sizing: border-box;
    left: 50%;
    top: 6%;
    transform: translateX(-50%) translateY(8px) scale(0.94);
    width: min(90%, 18.2rem);
    margin: 0;
    padding: 0.08rem 0.24rem;
    text-align: center;
    text-wrap: balance;
    font-family: "Fraunces", serif;
    font-weight: 700;
    font-size: clamp(1.02rem, 4.7vw, 1.36rem);
    line-height: 1.15;
    letter-spacing: 0.01em;
    color: #55bff3;
    background: none;
    border: none;
    border-radius: 0;
    box-shadow: none;
    -webkit-text-stroke: 0.35px rgba(33, 105, 146, 0.26);
    text-shadow:
        0 1px 0 rgba(255, 255, 255, 0.9),
        0 4px 14px rgba(49, 129, 176, 0.32),
        0 0 12px rgba(191, 236, 255, 0.52);
    filter: blur(6px);
    opacity: 0;
    pointer-events: none;
    z-index: 8;
}

.smoke-message strong {
    color: #2ea9ea;
    text-shadow:
        0 1px 0 rgba(255, 255, 255, 0.95),
        0 5px 16px rgba(43, 121, 166, 0.35),
        0 0 14px rgba(208, 242, 255, 0.58);
}

.cake-scene.is-photo-mode .smoke-message {
    top: 4.6%;
    width: min(92%, 18.5rem);
}

.cake-scene.is-blowing .blow-wave {
    animation: blow-sweep 920ms cubic-bezier(0.2, 0.72, 0.24, 1) forwards;
}

.photo-candle.is-out .photo-flame {
    opacity: 0;
    transform: translate(-50%, -50%) translateY(-10px) scale(0.18);
    transition: opacity 260ms ease, transform 420ms ease;
    transition-delay: var(--blow-delay, 0ms);
}

.photo-candle.is-out .photo-smoke {
    animation: candle-puff 1.15s ease-out forwards;
    animation-delay: calc(var(--blow-delay, 0ms) + var(--delay, 0ms));
}

.cake-scene.show-smoke-word .smoke-message {
    opacity: 1;
    filter: blur(0);
    transform: translateX(-50%) translateY(0) scale(1);
    transition: opacity 360ms ease, filter 640ms ease, transform 460ms ease;
    animation: smoke-message-float 3.6s ease-in-out infinite 0.6s;
}

.cake-side-balloons {
    position: absolute;
    inset: 0;
    z-index: 9;
    pointer-events: none;
}

.cake-side-balloon {
    position: absolute;
    width: clamp(2.9rem, 11vw, 3.8rem);
    aspect-ratio: 1 / 1;
    border-radius: 999px;
    border: 2px solid rgba(255, 248, 252, 0.82);
    overflow: hidden;
    box-shadow: 0 8px 18px rgba(20, 42, 56, 0.28);
    opacity: 0;
    transform: translateY(10px) scale(0.82);
    transition: opacity 340ms ease, transform 420ms ease;
}

.cake-side-balloon img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
}

.cake-side-balloon::after {
    content: "";
    position: absolute;
    left: 50%;
    bottom: -1.05rem;
    width: 1px;
    height: 1rem;
    transform: translateX(-50%);
    background: linear-gradient(180deg, rgba(255, 255, 255, 0.72), rgba(255, 255, 255, 0));
}

.cake-side-balloon.side-left {
    left: 0.35rem;
}

.cake-side-balloon.side-right {
    right: 0.35rem;
}

.cake-side-balloon.balloon-top {
    top: 22%;
}

.cake-side-balloon.balloon-bottom {
    top: 52%;
}

.cake-scene.show-balloons .cake-side-balloon {
    opacity: 1;
    transform: translateY(0) scale(1);
    animation: cake-balloon-float 3.2s ease-in-out infinite;
}

.cake-scene.show-balloons .cake-side-balloon.balloon-bottom {
    animation-delay: 380ms;
}

.cake-blow-btn {
    width: min(86%, 12.4rem);
    justify-self: center;
    text-align: center;
}

.promise-list {
    list-style: none;
    display: grid;
    gap: 0.52rem;
}

.promise-list li {
    border-radius: 14px;
    border: 1px solid rgba(23, 48, 60, 0.14);
    background: rgba(255, 255, 255, 0.68);
    padding: 0.62rem 0.66rem;
    font-size: 0.84rem;
    line-height: 1.42;
    color: #335666;
}

.promise-list li::before {
    content: "✦";
    color: #ff715b;
    margin-right: 0.45rem;
}

.btn,
.dock-btn {
    border: 0;
    border-radius: 999px;
    cursor: pointer;
    font: inherit;
    font-weight: 700;
    letter-spacing: 0.01em;
}

.btn {
    width: fit-content;
    padding: 0.72rem 1.08rem;
    font-size: 0.86rem;
    transition: transform 160ms ease, box-shadow 180ms ease;
}

.btn:active,
.dock-btn:active {
    transform: scale(0.97);
}

.btn:disabled {
    opacity: 0.6;
    cursor: default;
    box-shadow: none;
}

.btn-primary {
    color: #fdfdfd;
    background: linear-gradient(118deg, #ff715b 0%, #ff9d5c 60%, #ffcc70 100%);
    box-shadow: 0 9px 20px rgba(255, 113, 91, 0.34);
}

.btn-soft {
    color: #143240;
    background: linear-gradient(120deg, rgba(34, 163, 159, 0.18), rgba(255, 255, 255, 0.9));
    border: 1px solid rgba(34, 163, 159, 0.36);
    box-shadow: 0 6px 16px rgba(34, 163, 159, 0.16);
}

.action-dock {
    position: fixed;
    left: 50%;
    transform: translateX(-50%);
    bottom: calc(env(safe-area-inset-bottom) + 0.62rem);
    width: min(92vw, 408px);
    z-index: 10;
    border-radius: 22px;
    border: 1px solid rgba(23, 48, 60, 0.18);
    background: rgba(255, 255, 255, 0.82);
    box-shadow: 0 12px 28px rgba(24, 41, 53, 0.2);
    backdrop-filter: blur(9px);
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 0.5rem;
    padding: 0.54rem;
}

.dock-btn {
    min-height: 2.65rem;
    padding: 0.38rem 0.68rem;
    font-size: 0.83rem;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.4rem;
    color: #143240;
    background: rgba(255, 255, 255, 0.74);
    border: 1px solid rgba(23, 48, 60, 0.15);
    transition: border-color 180ms ease, background 180ms ease;
}

.dock-btn[aria-pressed="true"] {
    border-color: rgba(34, 163, 159, 0.52);
    background: linear-gradient(130deg, rgba(34, 163, 159, 0.2), rgba(255, 255, 255, 0.8));
}

.dock-btn:disabled {
    opacity: 0.52;
    cursor: not-allowed;
}

.dock-btn-heart {
    border-color: rgba(255, 113, 91, 0.34);
    background: linear-gradient(120deg, rgba(255, 113, 91, 0.14), rgba(255, 255, 255, 0.84));
}

.fx-layer {
    position: fixed;
    inset: 0;
    pointer-events: none;
    z-index: 12;
    overflow: hidden;
}

.fx-piece {
    position: fixed;
    left: 0;
    top: 0;
    width: var(--size, 10px);
    height: calc(var(--size, 10px) * 0.56);
    transform: translate(var(--x), var(--y)) rotate(var(--rot, 0deg));
    border-radius: 4px;
    background: var(--color, #ff715b);
    opacity: 0;
    animation: confetti-fly var(--dur, 1200ms) cubic-bezier(0.2, 0.8, 0.22, 1) forwards;
}

.fx-piece-heart {
    width: auto;
    height: auto;
    background: none;
    border-radius: 0;
    color: var(--color, #ff715b);
    font-size: var(--size, 12px);
    line-height: 1;
    font-weight: 700;
    text-shadow: 0 2px 10px rgba(255, 113, 91, 0.28);
    animation-name: heart-fly;
}

.reveal {
    opacity: 0;
    transform: translateY(14px);
    filter: blur(3px);
}

.reveal.is-visible {
    animation: reveal-up 700ms cubic-bezier(0.2, 0.78, 0.24, 1) forwards;
}

@keyframes reveal-up {
    0% {
        opacity: 0;
        transform: translateY(14px);
        filter: blur(3px);
    }

    100% {
        opacity: 1;
        transform: translateY(0);
        filter: blur(0);
    }
}

@keyframes reveal-line {
    0% {
        opacity: 0;
        transform: translateY(12px);
        filter: blur(3px);
    }

    100% {
        opacity: 1;
        transform: translateY(0);
        filter: blur(0);
    }
}

@keyframes confetti-fly {
    0% {
        opacity: 0;
        transform: translate(var(--x), var(--y)) rotate(var(--rot, 0deg)) scale(0.3);
    }

    12% {
        opacity: 1;
    }

    100% {
        opacity: 0;
        transform: translate(calc(var(--x) + var(--dx)), calc(var(--y) + var(--dy))) rotate(calc(var(--rot, 0deg) + 220deg)) scale(1.06);
    }
}

@keyframes heart-fly {
    0% {
        opacity: 0;
        transform: translate(var(--x), var(--y)) scale(0.5);
    }

    14% {
        opacity: 1;
    }

    100% {
        opacity: 0;
        transform: translate(calc(var(--x) + var(--dx)), calc(var(--y) + var(--dy))) scale(1.2);
    }
}

@keyframes flame-flicker {
    0% {
        transform: translate(-50%, -50%) translateY(0) scale(1);
    }

    50% {
        transform: translate(-50%, -50%) translateY(-2px) scale(1.08);
    }

    100% {
        transform: translate(-50%, -50%) translateY(0) scale(1);
    }
}

@keyframes blow-sweep {
    0% {
        opacity: 0;
        transform: translateX(0) scaleX(0.86);
    }

    18% {
        opacity: 0.86;
    }

    100% {
        opacity: 0;
        transform: translateX(386%) scaleX(1.14);
    }
}

@keyframes candle-puff {
    0% {
        opacity: 0;
        transform: translate(-50%, 2px) scale(0.32);
    }

    25% {
        opacity: 0.72;
    }

    100% {
        opacity: 0;
        transform: translate(calc(-50% + var(--sx, 0px)), -34px) scale(1.36);
    }
}

@keyframes smoke-draw {
    to {
        stroke-dashoffset: 0;
    }
}

@keyframes smoke-trace-fade {
    0% {
        opacity: 0.94;
        transform: translateY(0);
    }

    100% {
        opacity: 0;
        transform: translateY(-12px);
    }
}

@keyframes smoke-message-float {
    0% {
        transform: translateX(-50%) translateY(0) scale(1);
    }

    50% {
        transform: translateX(-50%) translateY(-4px) scale(1.02);
    }

    100% {
        transform: translateX(-50%) translateY(0) scale(1);
    }
}

@keyframes cake-balloon-float {
    0% {
        transform: translateY(0) scale(1) rotate(-1.2deg);
    }

    50% {
        transform: translateY(-8px) scale(1.03) rotate(1.2deg);
    }

    100% {
        transform: translateY(0) scale(1) rotate(-1.2deg);
    }
}

@keyframes bubble-heart-float {
    0% {
        opacity: 0;
        transform: translate(var(--x), var(--y)) scale(0.45);
    }

    20% {
        opacity: 1;
    }

    100% {
        opacity: 0;
        transform: translate(calc(var(--x) + var(--dx)), calc(var(--y) + var(--dy))) scale(1.04);
    }
}

@keyframes bokeh-rise {
    0% {
        opacity: 0;
        transform: translate3d(0, 0, 0) scale(0.58);
    }

    10% {
        opacity: 0.76;
    }

    42% {
        opacity: 0.64;
        transform: translate3d(20px, -52vh, 0) scale(0.98);
    }

    74% {
        opacity: 0.42;
        transform: translate3d(-12px, -94vh, 0) scale(1.08);
    }

    100% {
        opacity: 0;
        transform: translate3d(-28px, -136vh, 0) scale(1.2);
    }
}

@keyframes heart-dust-fade {
    0% {
        opacity: 0;
        transform: translate3d(0, 6px, 0) scale(0.62);
    }

    24% {
        opacity: 0.52;
    }

    55% {
        opacity: 0.34;
        transform: translate3d(4px, -9px, 0) scale(0.92);
    }

    100% {
        opacity: 0;
        transform: translate3d(-3px, -18px, 0) scale(1.04);
    }
}

@keyframes vine-grow {
    0% {
        opacity: 0;
        transform: translateX(-50%) scaleY(0);
    }

    100% {
        opacity: 0.98;
        transform: translateX(-50%) scaleY(1);
    }
}

@keyframes leaf-grow {
    0% {
        opacity: 0;
        transform: translate(var(--tx), 0) rotate(var(--rot)) scale(0.25);
    }

    100% {
        opacity: 0.98;
        transform: translate(var(--tx), 0) rotate(var(--rot)) scale(1);
    }
}

@keyframes vine-sway-left {
    0% {
        transform: translateX(-2px) rotate(-2.2deg);
    }

    50% {
        transform: translateX(2px) rotate(2.1deg);
    }

    100% {
        transform: translateX(-2px) rotate(-2.2deg);
    }
}

@keyframes vine-sway-right {
    0% {
        transform: translateX(2px) rotate(2.1deg);
    }

    50% {
        transform: translateX(-2px) rotate(-2deg);
    }

    100% {
        transform: translateX(2px) rotate(2.1deg);
    }
}

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

    100% {
        transform: translateY(-20px) scale(1.04);
    }
}

@keyframes grain-move {
    0% {
        transform: translate(0, 0);
    }

    100% {
        transform: translate(-22px, -30px);
    }
}

@media (min-width: 760px) {
    body {
        background:
            radial-gradient(circle at 14% 18%, rgba(255, 121, 90, 0.28), transparent 36%),
            radial-gradient(circle at 86% 80%, rgba(53, 185, 170, 0.24), transparent 38%),
            linear-gradient(140deg, #fff4e1 0%, #ffd3ab 42%, #c9efe2 100%);
    }

    .app {
        margin-top: 0.5rem;
        border-left: 1px solid rgba(23, 48, 60, 0.1);
        border-right: 1px solid rgba(23, 48, 60, 0.1);
        box-shadow: 0 20px 40px rgba(18, 39, 52, 0.08);
        border-radius: 24px;
        background: rgba(255, 255, 255, 0.24);
    }

    .photo-bubble {
        width: min(74%, 19rem);
    }
}

@media (max-width: 420px) {
    .hero-copy {
        font-size: 0.87rem;
        line-height: 1.55;
    }

    .section-head h2 {
        font-size: clamp(1.3rem, 7.5vw, 1.7rem);
    }

    .vine {
        width: 2.1rem;
        opacity: 0.8;
    }

    .vine-stem {
        width: 0.16rem;
    }

    .vine-leaf {
        width: 0.78rem;
        height: 0.46rem;
    }

    .photo-bubble {
        width: min(88%, 14.8rem);
        font-size: 0.77rem;
    }

    .letter-paper p {
        font-size: 0.84rem;
        line-height: 1.55;
    }

    .cake-wrap {
        gap: 0.6rem;
        margin: 0.05rem 0 0.68rem;
    }

    .cake-note {
        font-size: 0.75rem;
        line-height: 1.32;
    }

    .cake-scene {
        aspect-ratio: 1 / 1;
        border-radius: 18px;
    }

    .cake-art {
        width: min(96%, 19rem);
        bottom: 0.34rem;
    }

    .cake-scene.is-photo-mode .cake-art {
        width: min(97%, 19.2rem);
        bottom: 0.22rem;
    }

    .cake-scene.is-photo-mode .photo-candle-layer {
        left: 12%;
        right: 12%;
        top: 14%;
        bottom: 34%;
    }

    .photo-flame {
        width: 0.52rem;
        height: 0.82rem;
    }

    .smoke-message {
        font-size: clamp(0.92rem, 5.1vw, 1.14rem);
        width: min(94%, 16.7rem);
    }

    .cake-blow-btn {
        width: min(92%, 13.4rem);
        min-height: 2.8rem;
        font-size: 0.92rem;
    }
}

@media (max-height: 720px) {
    .card {
        padding: 0.9rem 0.82rem;
    }

    .hero h1 {
        font-size: clamp(1.58rem, 8vw, 2rem);
    }

    .action-dock {
        bottom: calc(env(safe-area-inset-bottom) + 0.42rem);
    }

    .cake-scene {
        aspect-ratio: 16 / 11;
    }

    .cake-art {
        width: min(90%, 17.8rem);
    }
}

@media (prefers-reduced-motion: reduce) {
    * {
        animation-duration: 1ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 1ms !important;
        scroll-behavior: auto !important;
    }
}