:root {
  --pink-bg: #f5d8e8;
  --blue-bg: #cce2ff;
  --pink-strong: #ef79bc;
  --blue-strong: #6aa7f5;
  --ink: #24344f;
  --ink-soft: #3c4f6f;
  --cloud: #e8eff8;
  --panel: rgba(255, 255, 255, 0.62);
  --panel-border: rgba(255, 255, 255, 0.9);
  --shadow: 0 24px 45px rgba(52, 76, 120, 0.12);
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  padding: 0;
  min-height: 100%;
}

body {
  font-family: "Nunito", sans-serif;
  color: var(--ink);
  background: linear-gradient(90deg, var(--pink-bg) 0%, var(--pink-bg) 50%, var(--blue-bg) 50%, var(--blue-bg) 100%);
  overflow-x: hidden;
  position: relative;
}

body::before,
body::after {
  content: "";
  position: fixed;
  left: 0;
  right: 0;
  pointer-events: none;
  z-index: 0;
}

body::before {
  top: -8px;
  height: 170px;
  background-image: radial-gradient(circle at 60px 138px, var(--cloud) 78px, transparent 79px);
  background-size: 160px 170px;
}

body::after {
  bottom: -38px;
  height: 220px;
  background-image: radial-gradient(circle at 60px 45px, var(--cloud) 95px, transparent 96px);
  background-size: 180px 220px;
}

body[data-phase="reveal"] {
  background:
    radial-gradient(circle at 50% 58%, rgba(255, 255, 255, 0.46), rgba(255, 255, 255, 0) 56%),
    linear-gradient(90deg, #f5d7e9 0%, #f5d7e9 50%, #f2c9e4 100%);
}

body[data-phase="guestbook"] {
  background:
    linear-gradient(130deg, #f0d3e6 0%, #dbecff 42%, #e8f0ff 100%);
}

.cloud {
  position: fixed;
  background: rgba(237, 244, 252, 0.92);
  border-radius: 999px;
  z-index: 1;
  box-shadow: inset 0 -8px 20px rgba(190, 204, 230, 0.3);
  animation: drift 18s ease-in-out infinite alternate;
}

.cloud::before,
.cloud::after {
  content: "";
  position: absolute;
  background: inherit;
  border-radius: inherit;
}

.cloud-a {
  width: 230px;
  height: 84px;
  top: 19%;
  left: -40px;
}

.cloud-a::before {
  width: 116px;
  height: 116px;
  top: -42px;
  left: 18px;
}

.cloud-a::after {
  width: 94px;
  height: 94px;
  top: -34px;
  left: 108px;
}

.cloud-b {
  width: 210px;
  height: 80px;
  top: 35%;
  right: -28px;
  animation-delay: 0.8s;
}

.cloud-b::before {
  width: 112px;
  height: 112px;
  top: -44px;
  left: 22px;
}

.cloud-b::after {
  width: 84px;
  height: 84px;
  top: -26px;
  left: 120px;
}

.cloud-c {
  width: 240px;
  height: 88px;
  top: 62%;
  left: 8%;
  animation-delay: 1.6s;
}

.cloud-c::before {
  width: 126px;
  height: 126px;
  top: -48px;
  left: 26px;
}

.cloud-c::after {
  width: 94px;
  height: 94px;
  top: -28px;
  left: 132px;
}

.app-shell {
  position: relative;
  z-index: 3;
  width: min(980px, 92vw);
  margin: 0 auto;
}

.screen {
  display: none;
  min-height: 100vh;
  padding: 118px 0 80px;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  gap: 14px;
}

.screen.active {
  display: flex;
  animation: fade-in 0.6s ease;
}

.eyebrow {
  margin: 0;
  font-size: clamp(1rem, 2vw, 1.3rem);
  color: #ffffff;
  text-shadow: 0 2px 6px rgba(66, 92, 137, 0.3);
  font-family: "Baloo 2", cursive;
  letter-spacing: 0.04em;
}

.title {
  margin: 0;
  font-family: "Baloo 2", cursive;
  font-size: clamp(3.2rem, 10vw, 7.2rem);
  line-height: 0.9;
  letter-spacing: 0.02em;
  background: linear-gradient(90deg, var(--blue-strong) 0 46%, #ffffff 46% 58%, var(--pink-strong) 58% 100%);
  -webkit-text-fill-color: transparent;
  -webkit-background-clip: text;
  background-clip: text;
}

.title span {
  display: inline-block;
  margin: 0 0.3rem;
  font-size: 0.54em;
  color: #fff;
  -webkit-text-fill-color: #fff;
  transform: translateY(-0.28em) rotate(-3deg);
}

.subtitle {
  max-width: 560px;
  margin: 0;
  color: var(--ink-soft);
  font-size: clamp(1.02rem, 2.3vw, 1.2rem);
}

.screen-title {
  margin: 0;
  font-family: "Baloo 2", cursive;
  font-size: clamp(2rem, 5vw, 3.2rem);
  color: #304467;
}

button {
  font-family: inherit;
  border: 0;
  cursor: pointer;
}

.cta,
.guess-btn,
.jump-btn,
.ghost-btn {
  border-radius: 999px;
  font-weight: 700;
  transition: transform 0.22s ease, box-shadow 0.22s ease;
}

.cta:hover,
.guess-btn:hover,
.jump-btn:hover,
.ghost-btn:hover {
  transform: translateY(-2px);
}

.cta {
  background: linear-gradient(135deg, #ff87c5, #ff6bad);
  color: #fff;
  padding: 13px 34px;
  box-shadow: 0 14px 30px rgba(241, 101, 169, 0.28);
  font-size: 1.02rem;
}

.cta.small {
  padding: 11px 24px;
}

.ghost-btn {
  background: rgba(255, 255, 255, 0.68);
  color: var(--ink-soft);
  padding: 10px 20px;
  border: 1px solid rgba(255, 255, 255, 0.8);
}

.ghost-btn.pulse {
  animation: pulse 1.2s ease infinite;
}

.ghost-btn:disabled {
  opacity: 0.52;
  cursor: not-allowed;
  transform: none;
}

.is-hidden {
  display: none !important;
}

.countdown-number {
  font-family: "Baloo 2", cursive;
  font-size: clamp(6rem, 26vw, 12rem);
  line-height: 0.8;
  color: #fff;
  text-shadow: 0 14px 36px rgba(76, 103, 145, 0.28);
}

.countdown-number.tick {
  animation: pop 0.3s ease;
}

.video-shell {
  width: min(860px, 92vw);
  aspect-ratio: 16 / 9;
  background: var(--panel);
  border: 2px solid var(--panel-border);
  border-radius: 30px;
  overflow: hidden;
  box-shadow: var(--shadow);
}

.video-shell.short {
  width: min(420px, 82vw);
  aspect-ratio: 9 / 16;
  position: relative;
}

.reveal-video {
  width: 100%;
  height: 100%;
  object-fit: cover;
  background: #000;
}

.jump-zone {
  width: min(820px, 92vw);
  min-height: clamp(230px, 35vh, 340px);
  position: relative;
  border-radius: 30px;
  background: var(--panel);
  border: 2px dashed rgba(255, 255, 255, 0.85);
  box-shadow: var(--shadow);
}

.jump-btn {
  position: absolute;
  left: 50%;
  top: 50%;
  transform: translate(-50%, -50%);
  white-space: nowrap;
  background: linear-gradient(135deg, #75b5ff, #8cc8ff);
  color: #fff;
  box-shadow: 0 14px 30px rgba(98, 162, 243, 0.32);
  padding: 14px 24px;
}

.guess-buttons {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 14px;
}

.guess-btn {
  min-width: 160px;
  padding: 14px 24px;
  font-size: 1.08rem;
  color: #fff;
}

.guess-btn.boy {
  background: linear-gradient(135deg, #67a8fa, #5594f1);
}

.guess-btn.girl {
  background: linear-gradient(135deg, #ff7abd, #ed68aa);
}

.hint {
  min-height: 1.5rem;
  margin: 0;
  color: #47618d;
  font-weight: 700;
}

.video-lock-countdown {
  margin: 0;
  font-family: "Baloo 2", cursive;
  font-size: clamp(2rem, 7vw, 3.4rem);
  color: #ffffff;
  text-shadow: 0 8px 22px rgba(46, 74, 117, 0.25);
  line-height: 1;
}

.video-overlay {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  align-items: center;
  gap: 10px;
  padding: 16px;
  pointer-events: auto;
  background: linear-gradient(180deg, rgba(0, 0, 0, 0) 52%, rgba(0, 0, 0, 0.45) 100%);
}

.video-overlay .video-lock-countdown {
  margin-bottom: 2px;
  pointer-events: none;
}

.video-overlay .ghost-btn {
  pointer-events: auto;
  margin-bottom: 2px;
}

.video-toggle {
  min-width: 120px;
}

.hint.success {
  color: #2f9a53;
}

.hint.error {
  color: #c53a73;
}

.shake {
  animation: shake 0.34s ease;
}

.reveal-screen {
  position: relative;
  overflow: hidden;
}

.reveal-word {
  margin: 0;
  font-family: "Baloo 2", cursive;
  font-size: clamp(4rem, 17vw, 10rem);
  line-height: 0.85;
  letter-spacing: 0.04em;
  color: #f26eb2;
  text-shadow: 0 16px 34px rgba(244, 108, 178, 0.26);
}

.confetti-layer {
  position: absolute;
  inset: -10%;
  pointer-events: none;
}

.confetti-piece {
  position: absolute;
  left: var(--x);
  top: -14%;
  width: 8px;
  height: 16px;
  border-radius: 2px;
  transform: rotate(var(--rot));
  animation: confetti-fall var(--dur) linear var(--delay) forwards;
}

.guestbook-form,
.guestbook-list {
  width: min(760px, 92vw);
}

#again-btn {
  margin-bottom: 4px;
}

.guestbook-form {
  display: flex;
  flex-direction: column;
  gap: 10px;
  background: var(--panel);
  border: 2px solid var(--panel-border);
  border-radius: 24px;
  padding: clamp(16px, 3vw, 26px);
  box-shadow: var(--shadow);
}

.guestbook-form label {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 8px;
  font-weight: 700;
  color: #3a4b6c;
}

.guestbook-form input,
.guestbook-form textarea {
  width: 100%;
  border: 1px solid rgba(136, 159, 201, 0.35);
  border-radius: 14px;
  font-family: inherit;
  font-size: 0.99rem;
  padding: 11px 14px;
  background: rgba(255, 255, 255, 0.85);
}

.guestbook-form textarea {
  min-height: 120px;
  resize: vertical;
}

.guestbook-list {
  list-style: none;
  margin: 14px 0 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 10px;
  max-height: 44vh;
  overflow: auto;
}

.guestbook-entry {
  border-radius: 16px;
  background: rgba(255, 255, 255, 0.75);
  border: 1px solid rgba(255, 255, 255, 0.8);
  box-shadow: 0 8px 20px rgba(76, 101, 136, 0.1);
  padding: 12px 14px;
  text-align: left;
}

.guestbook-entry p {
  margin: 8px 0 0;
  color: #334463;
}

.guestbook-entry.placeholder {
  text-align: center;
  color: #5a6f93;
}

.entry-head {
  display: flex;
  justify-content: space-between;
  gap: 14px;
  align-items: baseline;
  color: #2f4466;
}

.entry-head time {
  color: #6b7fa5;
  font-size: 0.88rem;
}

@keyframes fade-in {
  from {
    opacity: 0;
    transform: translateY(10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes pop {
  0% {
    transform: scale(0.86);
  }
  70% {
    transform: scale(1.06);
  }
  100% {
    transform: scale(1);
  }
}

@keyframes pulse {
  0%,
  100% {
    transform: scale(1);
  }
  50% {
    transform: scale(1.05);
  }
}

@keyframes drift {
  from {
    transform: translateX(0) translateY(0);
  }
  to {
    transform: translateX(26px) translateY(10px);
  }
}

@keyframes confetti-fall {
  0% {
    opacity: 0;
    transform: translate3d(0, 0, 0) rotate(var(--rot));
  }
  10% {
    opacity: 1;
  }
  100% {
    opacity: 0;
    transform: translate3d(var(--drift), 125vh, 0) rotate(680deg);
  }
}

@keyframes shake {
  0% {
    transform: translateX(0);
  }
  25% {
    transform: translateX(-6px);
  }
  50% {
    transform: translateX(7px);
  }
  75% {
    transform: translateX(-4px);
  }
  100% {
    transform: translateX(0);
  }
}

@media (max-width: 740px) {
  .screen {
    padding-top: 108px;
  }

  .title {
    font-size: clamp(3rem, 16vw, 5rem);
  }

  .jump-btn {
    white-space: normal;
    width: min(250px, 70vw);
    padding: 12px 16px;
  }

  .guess-btn {
    min-width: 130px;
  }
}