/* ===================================================
   VƯỜN HOA 20/10 - STYLESHEET (VANILLA CSS - HIGH PERFORMANCE)
   Tối ưu hóa GPU, loại bỏ blend-mode lag, tối ưu Glassmorphism
   =================================================== */

:root {
  --font-serif: 'Playfair Display', Georgia, serif;
  --font-script: 'Dancing Script', cursive;
  --font-sans: 'Montserrat', sans-serif;
  --font-soft: 'Quicksand', sans-serif;

  --color-primary: #ff5277;
  --color-primary-light: #ff7597;
  --color-secondary: #ffb199;
  --color-accent: #ffd166;
  --color-text-dark: #2c2534;
  --color-text-light: #ffffff;
  --color-text-subtle: #796c80;

  --glass-bg: rgba(255, 255, 255, 0.76);
  --glass-border: rgba(255, 255, 255, 0.85);
  --glass-shadow: 0 12px 30px -6px rgba(220, 80, 120, 0.16), 0 0 0 1px rgba(255, 255, 255, 0.6);
  --glass-blur: blur(10px); /* 10px tối ưu mượt mà cho GPU */

  --transition-smooth: all 0.3s cubic-bezier(0.2, 0.8, 0.2, 1);
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

html, body {
  width: 100%;
  height: 100%;
  height: 100dvh;
  overflow: hidden;
  position: fixed;
  inset: 0;
  background-color: #d4eaf7;
  font-family: var(--font-sans);
  color: var(--color-text-dark);
  user-select: none;
  -webkit-touch-callout: none;
}

/* Background Canvas */
#gardenCanvas {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  display: block;
  z-index: 1;
  cursor: crosshair;
  touch-action: none;
  transform: translateZ(0); /* Thúc đẩy Layer GPU */
}

/* Ambient glow & light particles (Bỏ mix-blend-mode để khử giật lag) */
.ambient-glow {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  z-index: 2;
  background: radial-gradient(circle at 50% 20%, rgba(255, 250, 240, 0.35) 0%, rgba(255, 200, 220, 0.12) 50%, transparent 80%);
  opacity: 0.8;
}

/* Top Header */
.header-container {
  position: absolute;
  top: 24px;
  left: 50%;
  transform: translateX(-50%) translateZ(0);
  text-align: center;
  z-index: 10;
  width: 90%;
  max-width: 920px;
  pointer-events: none;
  animation: fadeInDown 1.2s cubic-bezier(0.16, 1, 0.3, 1) forwards;
  will-change: transform, opacity;
}

.subtitle-badge {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 6px 20px;
  background: rgba(255, 255, 255, 0.85);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  border: 1px solid var(--glass-border);
  border-radius: 999px;
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: #c94065;
  box-shadow: 0 4px 15px rgba(200, 70, 100, 0.1);
  margin-bottom: 10px;
}

.badge-sparkle {
  color: #ff9f1c;
  animation: sparkleTwinkle 2.5s infinite ease-in-out;
  flex-shrink: 0;
}

.main-title {
  font-family: var(--font-serif);
  font-size: clamp(1.8rem, 4vw, 2.8rem);
  font-weight: 800;
  line-height: 1.2;
  color: #3b203a;
  text-shadow: 0 2px 10px rgba(255, 255, 255, 0.85);
  margin-bottom: 6px;
}

.main-title .recipient-name {
  font-family: var(--font-script);
  font-size: 1.35em;
  color: #ff3366;
  text-shadow: 0 2px 10px rgba(255, 51, 102, 0.25);
  display: inline-block;
  padding: 0 6px;
  transform: rotate(-2deg);
  transition: transform 0.3s ease;
}

.subtitle {
  font-family: var(--font-soft);
  font-size: clamp(0.85rem, 1.8vw, 1.05rem);
  color: #6a5369;
  font-weight: 600;
  letter-spacing: 0.5px;
  text-shadow: 0 1px 4px rgba(255, 255, 255, 0.9);
}

/* Glassmorphism Wish Card */
.wish-card {
  position: absolute;
  top: clamp(165px, 21vh, 205px);
  left: 50%;
  transform: translateX(-50%) translateZ(0);
  width: min(92%, 640px);
  background: var(--glass-bg);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  border: 1px solid var(--glass-border);
  border-radius: 20px;
  box-shadow: var(--glass-shadow);
  z-index: 10;
  overflow: hidden;
  transition: var(--transition-smooth);
  animation: fadeInUp 1.2s 0.3s cubic-bezier(0.16, 1, 0.3, 1) both;
  will-change: transform, opacity;
}

.wish-card:hover {
  box-shadow: 0 18px 40px -8px rgba(230, 60, 110, 0.22), 0 0 0 1px rgba(255, 255, 255, 0.8);
}

.card-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 12px 20px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.6);
  background: rgba(255, 255, 255, 0.45);
}

.card-header .tag {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.85rem;
  font-weight: 700;
  color: #9c2e55;
  text-transform: uppercase;
  letter-spacing: 1px;
}

.tag-flower-icon {
  animation: rotateSlow 20s linear infinite;
}

.minimize-btn {
  background: rgba(255, 255, 255, 0.8);
  border: 1px solid rgba(255, 255, 255, 0.95);
  border-radius: 50%;
  width: 30px;
  height: 30px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  color: #7b4458;
  transition: var(--transition-smooth);
}

.minimize-btn:hover {
  background: #ff5277;
  color: #fff;
  transform: scale(1.1);
}

.card-body {
  padding: 16px 22px 14px;
  transition: max-height 0.35s ease, opacity 0.25s ease, padding 0.25s ease;
  max-height: 340px;
  overflow: hidden;
}

.wish-card.minimized .card-body {
  max-height: 0;
  opacity: 0;
  padding-top: 0;
  padding-bottom: 0;
}

.wish-card.minimized .minimize-btn svg {
  transform: rotate(180deg);
}

/* Bố cục Ảnh Polaroid & Lời chúc */
.card-content-layout {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
  margin-bottom: 12px;
}

.polaroid-wrapper {
  position: relative;
  background: #ffffff;
  padding: 5px 5px 8px 5px;
  border-radius: 10px;
  box-shadow: 0 8px 22px rgba(0, 0, 0, 0.12), 0 2px 6px rgba(220, 80, 120, 0.1);
  transform: rotate(-2.5deg);
  cursor: pointer;
  flex-shrink: 0;
  transition: var(--transition-smooth);
}

.polaroid-wrapper:hover {
  transform: rotate(0deg) scale(1.04);
  box-shadow: 0 12px 28px rgba(255, 60, 110, 0.2);
}

.polaroid-pin {
  position: absolute;
  top: -10px;
  left: 50%;
  transform: translateX(-50%);
  font-size: 1rem;
  z-index: 2;
  filter: drop-shadow(0 2px 4px rgba(0, 0, 0, 0.15));
}

.polaroid-frame {
  position: relative;
  width: 96px;
  height: 96px;
  border-radius: 6px;
  overflow: hidden;
  background: #f5f0f3;
}

.polaroid-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  transition: transform 0.3s ease;
}

.polaroid-wrapper:hover .polaroid-img {
  transform: scale(1.06);
}

.photo-overlay {
  position: absolute;
  inset: 0;
  background: rgba(30, 10, 20, 0.5);
  color: #ffffff;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 3px;
  font-size: 0.72rem;
  font-weight: 700;
  opacity: 0;
  transition: opacity 0.2s ease;
}

.polaroid-wrapper:hover .photo-overlay {
  opacity: 1;
}

.polaroid-caption {
  font-family: var(--font-script);
  font-size: 0.92rem;
  font-weight: 700;
  color: #b82d56;
  text-align: center;
  margin-top: 4px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  max-width: 96px;
}

.wish-text-wrapper {
  flex-grow: 1;
  min-width: 0;
  display: flex;
  align-items: center;
}

.typewriter-container {
  min-height: 70px;
  font-family: var(--font-soft);
  font-size: 1.16rem;
  line-height: 1.68;
  color: #432e42;
  font-weight: 700;
}

.wish-text {
  display: inline;
}

.cursor {
  display: inline-block;
  color: #ff4070;
  font-weight: 700;
  animation: blink 0.8s infinite;
}

.wish-footer {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 10px;
  padding-top: 10px;
  border-top: 1px dashed rgba(200, 140, 160, 0.35);
  font-size: 0.85rem;
  color: #7a5f78;
}

.sender-info {
  display: flex;
  align-items: center;
  gap: 6px;
}

.sender-heart-icon {
  color: #ff3366;
  animation: heartBeat 2s infinite ease-in-out;
}

.signature {
  font-family: var(--font-script);
  font-size: 1.25rem;
  font-weight: 700;
  color: #b82d56;
}

.flower-counter {
  display: flex;
  align-items: center;
  gap: 6px;
  background: rgba(255, 255, 255, 0.8);
  padding: 4px 12px;
  border-radius: 12px;
  border: 1px solid rgba(255, 255, 255, 0.7);
}

.flower-counter strong {
  color: #ff3366;
  font-size: 1rem;
}

/* Bottom Toolbar */
/* Link tặng riêng: không hiển thị bất kỳ công cụ điều khiển/chỉnh sửa nào. */
.recipient-view .toolbar-container,
.recipient-view .playlist-popup,
.recipient-view .modal-backdrop,
.recipient-view .minimize-btn {
  display: none;
}

.recipient-view .polaroid-wrapper {
  cursor: default;
}

.letter-gate{position:fixed;inset:0;z-index:100;background:radial-gradient(circle at 50% 18%,#fffdf6 0,#e8dcec 48%,#5b4a67 145%);display:grid;place-items:center;padding:20px}.letter-gate[hidden]{display:none}.envelope{width:min(92vw,560px);min-height:360px;background:linear-gradient(145deg,#fffaf0,#f1e4d0);border-radius:18px;box-shadow:0 28px 80px #2e203855;position:relative;overflow:hidden;padding:46px 34px;text-align:center;color:#4f3d4c;border:1px solid #fff}.envelope:before,.envelope:after{content:"";position:absolute;width:75%;height:75%;background:#f8ecd9;transform:rotate(45deg);left:12%;top:-48%;border:1px solid #dfc5ad}.envelope:after{top:auto;bottom:-56%;background:#f3dfc5}.envelope>*{position:relative;z-index:1}.seal{width:68px;height:68px;border-radius:50%;background:#796074;color:#fff;margin:4px auto 18px;display:grid;place-items:center;font-size:30px;box-shadow:0 5px 0 #594252}.envelope h2{font-family:'Playfair Display',serif;margin:0;font-size:2rem}.envelope-code{display:block;width:min(100%,238px);min-height:53px;margin:22px auto 12px;padding:0;border:1px dashed #92717b;background:#fffdf8;border-radius:8px;font-weight:700;letter-spacing:1px;position:relative;overflow:hidden;color:#573d50}.scratch-secret{display:grid;place-items:center;min-height:51px;font-size:1rem;letter-spacing:.5px}.scratch-hint{position:absolute;inset:0;display:grid;place-content:center;background:repeating-linear-gradient(135deg,#92717b 0 4px,#aa8b99 4px 8px);color:#fff;line-height:1.25;transition:opacity .45s ease,transform .45s ease;z-index:1;text-shadow:0 1px 2px #4f3d4c}.scratch-hint small{font-weight:600;font-size:.74rem}.scratch-code.revealed .scratch-hint{opacity:0;transform:scale(1.15);pointer-events:none}.scratch-code.revealed{border-color:#b68c68;box-shadow:inset 0 0 0 2px #f3dfc5}.envelope input{display:block;width:min(100%,300px);margin:10px auto;padding:12px;border-radius:9px;border:1px solid #d4b9b3;text-align:center}.envelope button{border:0;border-radius:99px;padding:13px 23px;background:#796074;color:#fff;font-weight:700;cursor:pointer}.envelope .scratch-code{border-radius:8px;background:#fffdf8;color:#573d50;padding:0}.manage-panel{position:fixed;inset:0;z-index:80;background:#4b163955;display:grid;place-items:center;padding:18px}.manage-box{width:min(94vw,680px);max-height:84vh;overflow:auto;background:#fffafc;border-radius:20px;padding:24px;box-shadow:0 24px 60px #4b163966}.manage-item{display:flex;justify-content:space-between;gap:10px;padding:12px 0;border-bottom:1px solid #f1d8e1}.manage-item button{border:0;border-radius:8px;padding:8px 11px;background:#ff5d83;color:#fff;cursor:pointer}.manage-close{float:right;background:none!important;color:#7f4d61!important}

.toolbar-container {
  position: absolute;
  bottom: 24px;
  left: 50%;
  transform: translateX(-50%) translateZ(0);
  z-index: 15;
  width: auto;
  max-width: 95%;
  animation: fadeInUp 1.2s 0.5s cubic-bezier(0.16, 1, 0.3, 1) both;
  will-change: transform, opacity;
}

.toolbar-glass {
  display: flex;
  align-items: center;
  gap: 10px;
  background: rgba(255, 255, 255, 0.88);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  border: 1px solid var(--glass-border);
  padding: 8px 14px;
  border-radius: 50px;
  box-shadow: 0 12px 30px -6px rgba(180, 50, 90, 0.18), 0 0 0 1px rgba(255, 255, 255, 0.6);
}

.tool-btn {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 9px 18px;
  border: none;
  border-radius: 40px;
  background: rgba(255, 255, 255, 0.75);
  color: #4a3449;
  font-family: var(--font-soft);
  font-size: 0.9rem;
  font-weight: 700;
  cursor: pointer;
  transition: var(--transition-smooth);
  box-shadow: 0 2px 6px rgba(0, 0, 0, 0.04);
  white-space: nowrap;
}

.tool-btn .btn-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 20px;
  height: 20px;
  transition: transform 0.25s ease;
}

.tool-btn:hover {
  background: #ffffff;
  color: #ff3366;
  transform: translateY(-2px);
  box-shadow: 0 6px 16px rgba(255, 60, 110, 0.2);
}

.tool-btn:hover .btn-icon {
  transform: scale(1.12);
}

.tool-btn:active {
  transform: translateY(0);
}

.tool-btn.bloom-btn {
  background: linear-gradient(135deg, #ff6584 0%, #ff8966 100%);
  color: #ffffff;
  box-shadow: 0 5px 16px rgba(255, 101, 132, 0.35);
}

.tool-btn.bloom-btn:hover {
  background: linear-gradient(135deg, #ff4d72 0%, #ff7952 100%);
  box-shadow: 0 8px 20px rgba(255, 80, 115, 0.45);
  color: #ffffff;
}

/* Equalizer sóng nhạc động */
.equalizer-bars {
  display: none;
  align-items: flex-end;
  gap: 2.5px;
  width: 18px;
  height: 16px;
}

.eq-bar {
  width: 2.5px;
  background: currentColor;
  border-radius: 2px;
  animation: eqBounce 1.2s infinite ease-in-out;
}

.bar-1 { height: 40%; animation-delay: 0.1s; }
.bar-2 { height: 85%; animation-delay: 0.3s; }
.bar-3 { height: 60%; animation-delay: 0.2s; }
.bar-4 { height: 100%; animation-delay: 0.4s; }

.tool-btn.audio-btn.playing {
  background: linear-gradient(135deg, #34d399 0%, #059669 100%);
  color: #ffffff;
  box-shadow: 0 5px 16px rgba(16, 185, 129, 0.35);
}

.tool-btn.audio-btn.playing .music-idle-icon {
  display: none;
}

/* Audio Button Group & Playlist Popup */
.audio-button-group {
  display: flex;
  align-items: center;
  position: relative;
  gap: 4px;
}

.tool-btn.playlist-btn {
  padding: 9px 10px;
  border-radius: 40px;
  background: rgba(255, 255, 255, 0.6);
}

.tool-btn.playlist-btn:hover {
  background: #ffffff;
  color: #ff3366;
}

.playlist-popup {
  position: absolute;
  bottom: calc(100% + 14px);
  left: 0;
  width: 290px;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  border: 1px solid var(--glass-border);
  border-radius: 18px;
  box-shadow: 0 16px 40px -10px rgba(0, 0, 0, 0.2), 0 0 0 1px rgba(255, 255, 255, 0.8);
  padding: 12px;
  z-index: 50;
  opacity: 0;
  pointer-events: none;
  transform: translateY(12px) scale(0.96);
  transition: opacity 0.25s ease, transform 0.25s cubic-bezier(0.18, 0.89, 0.32, 1.2);
}

.playlist-popup.open {
  opacity: 1;
  pointer-events: auto;
  transform: translateY(0) scale(1);
}

.playlist-header {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.82rem;
  font-weight: 700;
  color: #8c254a;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  padding: 4px 8px 10px;
  border-bottom: 1px solid rgba(220, 180, 200, 0.35);
  margin-bottom: 8px;
}

.playlist-items {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.playlist-item {
  display: flex;
  align-items: center;
  gap: 12px;
  width: 100%;
  padding: 8px 10px;
  border: 1px solid transparent;
  background: transparent;
  border-radius: 12px;
  cursor: pointer;
  text-align: left;
  transition: var(--transition-smooth);
}

.playlist-item:hover {
  background: #fbeef4;
  border-color: rgba(255, 180, 200, 0.4);
}

.playlist-item.active {
  background: #ffe3ec;
  border-color: #ffb3c7;
}

.playlist-item .track-icon.vector-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.85);
  flex-shrink: 0;
  box-shadow: 0 2px 6px rgba(0, 0, 0, 0.05);
  transition: transform 0.25s ease;
}

.playlist-item:hover .track-icon.vector-icon {
  transform: scale(1.1);
}

.playlist-item .track-info {
  flex-grow: 1;
  overflow: hidden;
}

.playlist-item .track-title {
  font-size: 0.86rem;
  font-weight: 700;
  color: #3b203a;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.playlist-item .track-sub {
  font-size: 0.72rem;
  color: #826c7e;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.playlist-item .track-indicator {
  opacity: 0;
  flex-shrink: 0;
  color: #ff3366;
  transition: opacity 0.2s ease, transform 0.2s ease;
  transform: scale(0.8);
}

.playlist-item.active .track-indicator {
  opacity: 1;
  transform: scale(1);
}

.playlist-item.upload-item {
  border-top: 1px dashed rgba(200, 150, 170, 0.4);
  padding-top: 10px;
  margin-top: 4px;
}

/* Modal Dialog */
.modal-backdrop {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(40, 20, 35, 0.4);
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 100;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.25s ease;
}

.modal-backdrop.open {
  opacity: 1;
  pointer-events: auto;
}

.modal-box {
  width: min(92%, 520px);
  background: rgba(255, 255, 255, 0.98);
  border-radius: 24px;
  box-shadow: 0 25px 60px rgba(0, 0, 0, 0.2), 0 0 0 1px rgba(255, 255, 255, 0.8);
  padding: 24px 28px;
  transform: scale(0.92) translateY(15px);
  transition: transform 0.25s cubic-bezier(0.18, 0.89, 0.32, 1.2);
}

.modal-backdrop.open .modal-box {
  transform: scale(1) translateY(0);
}

.modal-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 20px;
}

.modal-title-wrap {
  display: flex;
  align-items: center;
  gap: 10px;
}

.modal-header h3 {
  font-family: var(--font-serif);
  font-size: 1.35rem;
  color: #8c254a;
}

.close-modal-btn {
  background: #f5edf1;
  border: none;
  width: 32px;
  height: 32px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #887483;
  cursor: pointer;
  transition: var(--transition-smooth);
}

.close-modal-btn:hover {
  background: #ff5277;
  color: #fff;
  transform: rotate(90deg);
}

.modal-body label {
  display: block;
  font-size: 0.85rem;
  font-weight: 700;
  color: #554455;
  margin: 12px 0 6px;
}

.modal-body input,
.modal-body textarea {
  width: 100%;
  padding: 10px 14px;
  border: 1.5px solid #e5d7df;
  border-radius: 12px;
  font-family: var(--font-soft);
  font-size: 0.95rem;
  color: #332233;
  background: #fdfafd;
  transition: border-color 0.2s, box-shadow 0.2s;
}

.modal-body input:focus,
.modal-body textarea:focus {
  outline: none;
  border-color: #ff5277;
  box-shadow: 0 0 0 3px rgba(255, 82, 119, 0.15);
}

.quick-wishes {
  margin-top: 14px;
}

.quick-wishes > span {
  font-size: 0.8rem;
  font-weight: 600;
  color: #837282;
}

.tag-list {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-top: 6px;
}

.quick-tag {
  background: #f7ebf1;
  border: 1px solid #ecc9d8;
  color: #8a3055;
  font-size: 0.78rem;
  font-weight: 600;
  padding: 5px 12px;
  border-radius: 20px;
  cursor: pointer;
  transition: var(--transition-smooth);
}

.quick-tag:hover {
  background: #ff5277;
  color: #fff;
  border-color: #ff5277;
}

.modal-actions {
  display: flex;
  justify-content: flex-end;
  align-items: center;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 22px;
}

.btn-primary, .btn-secondary, .btn-share {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 20px;
  border-radius: 12px;
  font-weight: 700;
  font-size: 0.9rem;
  cursor: pointer;
  transition: var(--transition-smooth);
}

.btn-secondary {
  background: #f1ecf0;
  color: #635362;
  border: none;
}

.btn-secondary:hover {
  background: #e3dbe1;
}

.btn-share {
  border: 1.5px solid #ff4d72;
  background: #fff0f5;
  color: #ff3366;
}

.btn-share:hover {
  background: #ff3366;
  color: #ffffff;
  box-shadow: 0 4px 14px rgba(255, 51, 102, 0.35);
  transform: translateY(-1px);
}

.btn-primary {
  background: linear-gradient(135deg, #ff4d72 0%, #ff7952 100%);
  color: #ffffff;
  border: none;
  box-shadow: 0 5px 16px rgba(255, 77, 114, 0.35);
}

.btn-primary:hover {
  box-shadow: 0 8px 20px rgba(255, 77, 114, 0.45);
  transform: translateY(-2px);
}

/* Toast */
.toast-notification {
  position: fixed;
  bottom: 85px;
  left: 50%;
  transform: translateX(-50%) translateY(20px);
  background: rgba(30, 20, 28, 0.9);
  color: #fff;
  padding: 10px 22px;
  border-radius: 30px;
  font-size: 0.9rem;
  font-weight: 600;
  box-shadow: 0 10px 25px rgba(0, 0, 0, 0.2);
  z-index: 200;
  opacity: 0;
  pointer-events: none;
  transition: transform 0.25s ease, opacity 0.25s ease;
}

.toast-notification.show {
  opacity: 1;
  transform: translateX(-50%) translateY(0);
}

/* Keyframes */
@keyframes fadeInDown {
  from {
    opacity: 0;
    transform: translate(-50%, -20px);
  }
  to {
    opacity: 1;
    transform: translate(-50%, 0);
  }
}

@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translate(-50%, 20px);
  }
  to {
    opacity: 1;
    transform: translate(-50%, 0);
  }
}

@keyframes sparkleTwinkle {
  0%, 100% { transform: scale(0.9) rotate(0deg); opacity: 0.7; }
  50% { transform: scale(1.2) rotate(90deg); opacity: 1; }
}

@keyframes rotateSlow {
  from { transform: rotate(0deg); }
  to { transform: rotate(360deg); }
}

@keyframes heartBeat {
  0%, 100% { transform: scale(1); }
  14% { transform: scale(1.2); }
  28% { transform: scale(1); }
  42% { transform: scale(1.12); }
  70% { transform: scale(1); }
}

@keyframes eqBounce {
  0%, 100% { height: 25%; }
  50% { height: 100%; }
}

@keyframes blink {
  0%, 100% { opacity: 1; }
  50% { opacity: 0; }
}

/* Responsive adjustments for Mobile & Tablets */
@media (max-width: 768px) {
  .header-container {
    top: 12px;
    width: 94%;
  }

  .subtitle-badge {
    font-size: 0.72rem;
    padding: 4px 14px;
    letter-spacing: 1px;
    margin-bottom: 6px;
  }

  .main-title {
    font-size: clamp(1.4rem, 5.5vw, 1.9rem);
  }

  .subtitle {
    font-size: 0.82rem;
  }

  .wish-card {
    top: 110px;
    width: min(94%, 480px);
    border-radius: 16px;
  }

  .card-header {
    padding: 10px 14px;
  }

  .card-body {
    padding: 12px 14px 10px;
  }

  .card-content-layout {
    gap: 12px;
  }

  .polaroid-frame {
    width: 74px;
    height: 74px;
  }

  .polaroid-caption {
    font-size: 0.78rem;
    max-width: 74px;
  }

  .typewriter-container {
    font-size: 0.88rem;
    line-height: 1.5;
    min-height: 48px;
    margin-bottom: 8px;
  }

  .signature {
    font-size: 1.1rem;
  }

  .flower-counter {
    padding: 3px 8px;
    font-size: 0.78rem;
  }

  .toolbar-container {
    bottom: calc(12px + env(safe-area-inset-bottom, 0px));
    width: 95%;
  }

  .toolbar-glass {
    flex-wrap: wrap;
    justify-content: center;
    gap: 6px;
    padding: 6px 10px;
    border-radius: 24px;
  }

  .tool-btn {
    padding: 8px 12px;
    font-size: 0.8rem;
    gap: 5px;
  }

  .tool-btn .btn-label {
    display: none;
  }

  .tool-btn.bloom-btn .btn-label,
  .tool-btn.audio-btn .btn-label {
    display: inline;
  }

  .modal-box {
    padding: 20px 18px;
    border-radius: 20px;
  }
}