:root {
    /* Bảng màu Colorful Scrapbook Aesthetic */
    --paper-cream: #FFFDF7;
    --paper-warm: #FDF6E9;
    --pastel-pink: #FFCAD4;
    --pastel-pink-deep: #FF8FAB;
    --butter-yellow: #FFF1A8;
    --butter-deep: #FFD166;
    --mint-green: #C7F9CC;
    --mint-deep: #74C69D;
    --sky-blue: #CDE8FF;
    --sky-deep: #64B5F6;
    --lavender: #E5D4FF;
    --lavender-deep: #B388EB;
    --peach: #FFD8BE;
    --peach-deep: #F4A261;

    --ink-brown: #4A3E3D;
    --ink-soft: #7A6A68;
    --shadow-soft: 0 12px 28px rgba(74, 62, 61, 0.1);
    --shadow-hover: 0 22px 42px rgba(74, 62, 61, 0.18);

    /* Custom Star Cursor (SVG data URI) */
    --cursor-star: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='28' height='28' viewBox='0 0 28 28'><path d='M14 2 L17.5 9.8 L26 10.8 L19.6 16.5 L21.4 25 L14 20.6 L6.6 25 L8.4 16.5 L2 10.8 L10.5 9.8 Z' fill='%23FFD166' stroke='%23FF8FAB' stroke-width='2' stroke-linejoin='round'/></svg>") 14 14, auto;
    --cursor-flower: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='30' height='30' viewBox='0 0 30 30'><circle cx='15' cy='7' r='5' fill='%23FFCAD4'/><circle cx='23' cy='15' r='5' fill='%23FFCAD4'/><circle cx='15' cy='23' r='5' fill='%23FFCAD4'/><circle cx='7' cy='15' r='5' fill='%23FFCAD4'/><circle cx='15' cy='15' r='5' fill='%23FFD166' stroke='%23FF8FAB' stroke-width='1.5'/></svg>") 15 15, pointer;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Open Sans', sans-serif !important;
}

html {
    scroll-behavior: smooth;
    cursor: var(--cursor-star);
}

body {
    font-family: 'Open Sans', sans-serif;
    color: var(--ink-brown);
    background-color: var(--paper-warm);
    /* Nền chấm bi & caro dịu nhẹ kiểu bàn cắt dán thủ công */
    background-image:
        radial-gradient(#f3c6d3 1.3px, transparent 1.3px),
        radial-gradient(#bce3c8 1.3px, var(--paper-warm) 1.3px);
    background-size: 36px 36px;
    background-position: 0 0, 18px 18px;
    min-height: 100vh;
    overflow-x: hidden;
    padding: 28px 16px 80px;
    transition: background-color 0.5s ease;
}

body.theme-pink-desk {
    --paper-warm: #FFF0F5;
}

body.theme-mint-desk {
    --paper-warm: #F0FFF4;
}

body.theme-lavender-desk {
    --paper-warm: #F6F0FF;
}

button, a, .polaroid-card, .draggable-sticker, .postage-stamp {
    cursor: var(--cursor-flower);
}

/* =====================================================
   AMBIENT FLOATING STICKERS & SPARKLES
   ===================================================== */
#ambient-bg,
#cursor-trail-container {
    position: fixed;
    inset: 0;
    pointer-events: none;
    z-index: 1;
    overflow: hidden;
}

#cursor-trail-container {
    z-index: 9999;
}

.floating-bg-item {
    position: absolute;
    font-size: var(--size, 1.4rem);
    opacity: 0.55;
    animation: floatSlow var(--dur, 12s) ease-in-out infinite alternate;
    filter: drop-shadow(0 3px 6px rgba(0,0,0,0.06));
}

@keyframes floatSlow {
    0% {
        transform: translate3d(0, 0, 0) rotate(0deg) scale(0.95);
    }
    50% {
        transform: translate3d(14px, -22px, 0) rotate(12deg) scale(1.06);
    }
    100% {
        transform: translate3d(-12px, -40px, 0) rotate(-10deg) scale(0.98);
    }
}

.sparkle-dot {
    position: absolute;
    width: 10px;
    height: 10px;
    pointer-events: none;
    animation: twinkle 2.8s ease-in-out infinite;
}

.sparkle-dot::before,
.sparkle-dot::after {
    content: "";
    position: absolute;
    background: #FFD166;
    border-radius: 99px;
}

.sparkle-dot::before {
    width: 100%;
    height: 3px;
    top: 3.5px;
    left: 0;
}

.sparkle-dot::after {
    width: 3px;
    height: 100%;
    left: 3.5px;
    top: 0;
}

@keyframes twinkle {
    0%, 100% { transform: scale(0.2) rotate(0deg); opacity: 0.1; }
    50% { transform: scale(1.25) rotate(45deg); opacity: 0.9; }
}

.cursor-sparkle {
    position: fixed;
    font-size: 1rem;
    pointer-events: none;
    animation: cursorPop 0.75s ease-out forwards;
}

@keyframes cursorPop {
    0% { transform: translate(-50%, -50%) scale(0.6) rotate(0deg); opacity: 1; }
    100% { transform: translate(-50%, -140%) scale(1.3) rotate(35deg); opacity: 0; }
}

/* =====================================================
   GÓC TRANG TRÍ MASCOTS & CHARMS (SIDEBAR NHỎ)
   ===================================================== */
.corner-charms {
    position: fixed;
    right: 18px;
    bottom: 22px;
    display: flex;
    flex-direction: column;
    gap: 12px;
    z-index: 90;
}

.charm-item {
    position: relative;
    width: 58px;
    height: 58px;
    border-radius: 50%;
    border: 3px solid #FFFFFF;
    background: var(--pastel-pink);
    box-shadow: 0 8px 18px rgba(74, 62, 61, 0.16);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.85rem;
    transition: transform 0.25s cubic-bezier(0.34, 1.56, 0.64, 1), background-color 0.25s;
}

.charm-cat { background: var(--butter-yellow); }
.charm-camera { background: var(--sky-blue); }
.charm-bow { background: var(--lavender); }

.charm-item:hover {
    transform: scale(1.14) rotate(-8deg);
}

.charm-bubble {
    position: absolute;
    right: 70px;
    background: #FFFFFF;
    color: var(--ink-brown);
    font-family: 'Patrick Hand', cursive;
    font-size: 1rem;
    padding: 6px 14px;
    border-radius: 16px;
    border: 2px dashed var(--pastel-pink-deep);
    white-space: nowrap;
    box-shadow: 0 6px 14px rgba(0,0,0,0.08);
    opacity: 0;
    transform: translateX(10px) scale(0.85);
    pointer-events: none;
    transition: all 0.25s cubic-bezier(0.34, 1.56, 0.64, 1);
}

.charm-item.active-charm .charm-bubble,
.charm-item:hover .charm-bubble {
    opacity: 1;
    transform: translateX(0) scale(1);
}

.charm-wiggle {
    animation: charmWiggle 0.6s cubic-bezier(0.36, 0.07, 0.19, 0.97);
}

@keyframes charmWiggle {
    0%, 100% { transform: rotate(0deg) scale(1); }
    20% { transform: rotate(-22deg) scale(1.25); }
    40% { transform: rotate(18deg) scale(1.25); }
    60% { transform: rotate(-14deg) scale(1.15); }
    80% { transform: rotate(10deg) scale(1.08); }
}

/* =====================================================
   KHAY STICKER KÉO THẢ (DRAGGABLE STICKERS)
   ===================================================== */
.sticker-dock {
    max-width: 960px;
    margin: 0 auto 20px;
    background: rgba(255, 255, 255, 0.85);
    backdrop-filter: blur(6px);
    border: 2.5px dashed var(--pastel-pink-deep);
    border-radius: 22px;
    padding: 10px 18px;
    position: relative;
    z-index: 60;
    box-shadow: 0 8px 20px rgba(255, 143, 171, 0.14);
}

.dock-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    font-family: 'Patrick Hand', cursive;
    font-size: 1.1rem;
    color: var(--ink-brown);
}

.draggable-sticker {
    position: fixed;
    z-index: 80;
    font-size: 2.35rem;
    user-select: none;
    touch-action: none;
    filter: drop-shadow(0 4px 0 #FFFFFF) drop-shadow(0 6px 10px rgba(74, 62, 61, 0.22));
    transform: rotate(var(--rot, 0deg));
    transition: transform 0.2s cubic-bezier(0.34, 1.56, 0.64, 1);
}

.draggable-sticker:hover {
    transform: rotate(0deg) scale(1.22);
}

.draggable-sticker.dragging {
    transform: scale(1.35) rotate(8deg);
    z-index: 999;
    transition: none;
}

/* =====================================================
   CUỐN SỔ SCRAPBOOK CHÍNH (BINDER)
   ===================================================== */
.scrapbook-binder {
    position: relative;
    max-width: 1040px;
    margin: 0 auto;
    background-color: var(--paper-cream);
    border-radius: 34px;
    border: 4px solid #FFFFFF;
    box-shadow:
        0 20px 50px rgba(74, 62, 61, 0.14),
        0 0 0 8px var(--pastel-pink),
        12px 14px 0 6px var(--butter-yellow);
    padding: 46px 42px 54px 62px;
    z-index: 10;
    overflow: hidden;
}

/* Gáy lò xo bên trái sổ */
.binder-rings {
    position: absolute;
    left: 12px;
    top: 60px;
    bottom: 60px;
    width: 26px;
    display: flex;
    flex-direction: column;
    justify-content: space-around;
    z-index: 25;
}

.binder-rings span {
    display: block;
    width: 30px;
    height: 14px;
    border-radius: 99px;
    background: linear-gradient(90deg, #e2cfea, #ffffff, #ffcad4);
    border: 2px solid #b59da4;
    box-shadow: 2px 3px 5px rgba(0,0,0,0.12);
}

/* =====================================================
   WASHI TAPES (BĂNG KEO NHIỀU MÀU)
   ===================================================== */
.washi-tape {
    position: absolute;
    width: 118px;
    height: 30px;
    opacity: 0.86;
    z-index: 15;
    box-shadow: 0 2px 6px rgba(0, 0, 0, 0.08);
    /* Răng cưa 2 đầu băng keo */
    clip-path: polygon(
        4% 0%, 96% 0%, 100% 15%, 97% 32%, 100% 50%, 96% 68%, 100% 85%, 96% 100%,
        4% 100%, 0% 85%, 4% 68%, 0% 50%, 3% 32%, 0% 15%
    );
}

.tape-pink {
    background: repeating-linear-gradient(45deg, #FFCAD4, #FFCAD4 8px, #FFE5EC 8px, #FFE5EC 16px);
}

.tape-mint {
    background: repeating-linear-gradient(-45deg, #B7E4C7, #B7E4C7 10px, #D8F3DC 10px, #D8F3DC 20px);
}

.tape-butter {
    background: repeating-linear-gradient(90deg, #FFF1A8, #FFF1A8 10px, #FFF9DB 10px, #FFF9DB 20px);
}

.tape-sky {
    background: repeating-linear-gradient(45deg, #BDE0FE, #BDE0FE 9px, #E2F1FF 9px, #E2F1FF 18px);
}

.tape-lavender {
    background: radial-gradient(#FFFFFF 22%, transparent 23%) 0 0 / 12px 12px, #E5D4FF;
}

.tape-peach {
    background: repeating-linear-gradient(135deg, #FFD8BE, #FFD8BE 8px, #FFF0E5 8px, #FFF0E5 16px);
}

.tape-checkered {
    background:
        conic-gradient(#FFD166 90deg, #FFF9DB 90deg 180deg, #FFD166 180deg 270deg, #FFF9DB 270deg)
        0 0 / 14px 14px;
}

/* =====================================================
   HEADER SCRAPBOOK
   ===================================================== */
.scrapbook-header {
    position: relative;
    background: #FFF9F2;
    border: 2.5px solid #F3D5C0;
    border-radius: 26px;
    padding: 38px 28px 34px;
    text-align: center;
    margin-bottom: 44px;
    box-shadow: var(--shadow-soft);
    background-image:
        linear-gradient(rgba(255, 202, 212, 0.22) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255, 202, 212, 0.22) 1px, transparent 1px);
    background-size: 24px 24px;
}

.tape-top-left {
    top: -12px;
    left: 24px;
    transform: rotate(-16deg);
}

.tape-top-right {
    top: -12px;
    right: 28px;
    transform: rotate(14deg);
}

.tape-bottom {
    bottom: -14px;
    left: 50%;
    transform: translateX(-50%) rotate(-2deg);
    width: 150px;
}

.journal-date {
    display: inline-block;
    font-family: 'Patrick Hand', cursive;
    font-size: 1.05rem;
    background: var(--butter-yellow);
    padding: 4px 16px;
    border-radius: 99px;
    color: var(--ink-brown);
    margin-bottom: 10px;
    transform: rotate(-1.5deg);
    box-shadow: 2px 3px 0 rgba(74, 62, 61, 0.1);
}

.handwritten-title {
    font-family: 'Caveat', cursive;
    font-size: clamp(2.8rem, 6vw, 4.4rem);
    font-weight: 700;
    color: var(--ink-brown);
    line-height: 1.1;
    position: relative;
    display: inline-block;
    margin-bottom: 8px;
}

.title-highlight {
    background: linear-gradient(180deg, transparent 55%, var(--pastel-pink) 55%);
    padding: 0 8px;
    border-radius: 8px;
}

.doodle-underline {
    display: block;
    width: 85%;
    max-width: 310px;
    height: 24px;
    margin: -4px auto 0;
}

.handwritten-subtitle {
    font-family: 'Patrick Hand', cursive;
    font-size: 1.35rem;
    color: var(--ink-soft);
    margin-top: 4px;
}

.static-sticker {
    position: absolute;
    font-size: 1.9rem;
    filter: drop-shadow(0 3px 0 #FFF);
    animation: gentleBob 3.5s ease-in-out infinite alternate;
}

.st-star-1 { top: 18px; left: 12%; animation-delay: 0.2s; }
.st-heart-1 { bottom: 18px; left: 8%; animation-delay: 0.9s; }
.st-flower-1 { top: 22px; right: 14%; animation-delay: 0.5s; }
.st-sparkle-1 { bottom: 20px; right: 9%; animation-delay: 1.2s; }

@keyframes gentleBob {
    0% { transform: translateY(0) rotate(-8deg); }
    100% { transform: translateY(-8px) rotate(10deg); }
}

/* Tem thư góc Header */
.postage-stamp {
    position: absolute;
    top: 22px;
    right: 24px;
    width: 78px;
    height: 90px;
    background: #FFFFFF;
    padding: 7px;
    transform: rotate(8deg);
    box-shadow: 0 6px 14px rgba(0,0,0,0.1);
    border: 3px dotted var(--pastel-pink-deep);
    border-radius: 6px;
    transition: transform 0.25s cubic-bezier(0.34, 1.56, 0.64, 1);
}

.postage-stamp:hover {
    transform: rotate(-4deg) scale(1.1);
}

.stamp-inner {
    width: 100%;
    height: 100%;
    background: var(--lavender);
    border-radius: 4px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 2px;
}

.stamp-text {
    font-size: 0.65rem;
    font-weight: 700;
    letter-spacing: 0.08em;
}

.stamp-icon {
    font-size: 1.5rem;
}

.stamp-number {
    font-size: 0.58rem;
    font-weight: 700;
    color: var(--ink-soft);
}

/* =====================================================
   KHU VỰC POLAROID XẾP CHỒNG (COLLAGE STAGE)
   ===================================================== */
.polaroid-collage-stage {
    margin-bottom: 56px;
}

.stage-instruction {
    display: flex;
    align-items: center;
    justify-content: center;
    flex-wrap: wrap;
    gap: 12px;
    margin-bottom: 32px;
    font-family: 'Patrick Hand', cursive;
    font-size: 1.15rem;
    color: var(--ink-soft);
}

.paperclip {
    font-size: 1.4rem;
    transform: rotate(-20deg);
}

.polaroid-stack {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 14px;
    padding: 20px 10px 30px;
    perspective: 1000px;
}

.polaroid-card {
    position: relative;
    background: #FFFFFF;
    padding: 14px 14px 22px;
    border-radius: 10px;
    border: 1px solid #F0E6DC;
    box-shadow:
        0 14px 28px rgba(74, 62, 61, 0.14),
        0 3px 6px rgba(74, 62, 61, 0.08);
    transform: translate(var(--x, 0), var(--y, 0)) rotate(var(--angle, 0deg));
    z-index: var(--z, 1);
    transition:
        transform 0.38s cubic-bezier(0.34, 1.56, 0.64, 1),
        box-shadow 0.35s ease,
        z-index 0s;
}

.polaroid-card .washi-tape {
    top: -13px;
    left: 50%;
    transform: translateX(-50%) rotate(-4deg);
    width: 96px;
    height: 24px;
}

.corner-sticker {
    position: absolute;
    bottom: 10px;
    right: 12px;
    font-size: 1.45rem;
    filter: drop-shadow(0 2px 0 #FFF);
    transition: transform 0.3s ease;
}

.polaroid-card:hover {
    transform: translate(0, -16px) rotate(1.5deg) scale(1.09) !important;
    box-shadow: var(--shadow-hover);
    z-index: 30 !important;
}

.polaroid-card:hover .corner-sticker {
    transform: scale(1.3) rotate(18deg);
}

.polaroid-photo {
    position: relative;
    width: 100%;
    aspect-ratio: 4 / 5;
    border-radius: 6px;
    overflow: hidden;
    border: 2px solid #F5EBE1;
    margin-bottom: 14px;
    background: #FFF9F2;
}

.polaroid-img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: center top;
    display: block;
    transition: transform 0.45s ease;
}

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

.photo-shine {
    position: absolute;
    inset: 0;
    background: linear-gradient(120deg, transparent 30%, rgba(255,255,255,0.45) 50%, transparent 70%);
    transform: translateX(-120%);
    transition: transform 0.65s ease;
}

.polaroid-card:hover .photo-shine {
    transform: translateX(120%);
}

.polaroid-caption {
    text-align: center;
}

.polaroid-caption h3 {
    font-family: 'Caveat', cursive;
    font-size: 1.9rem;
    color: var(--ink-brown);
    margin-bottom: 4px;
}

.polaroid-caption p {
    font-size: 0.88rem;
    color: var(--ink-soft);
    line-height: 1.45;
    margin-bottom: 10px;
}

.hand-tag {
    display: inline-block;
    font-family: 'Patrick Hand', cursive;
    font-size: 0.86rem;
    padding: 2px 10px;
    border-radius: 99px;
}

.tag-yellow { background: var(--butter-yellow); }
.tag-blue { background: var(--sky-blue); }
.tag-pink { background: var(--pastel-pink); }
.tag-mint { background: var(--mint-green); }

/* =====================================================
   BỐ CỤC TỰ DO SCRAPBOOK SPREAD (2 CỘT BẤT ĐỐI XỨNG)
   ===================================================== */
.freeform-scrapbook-spread {
    display: grid;
    grid-template-columns: 1.12fr 0.88fr;
    gap: 36px;
    align-items: start;
    margin-bottom: 48px;
}

.spread-left,
.spread-right {
    display: flex;
    flex-direction: column;
    gap: 34px;
}

/* Mẩu giấy xé (Torn Paper Note) */
.torn-paper-note {
    position: relative;
    background: #FFFDF9;
    padding: 34px 30px 38px;
    border-radius: 14px 14px 4px 4px;
    box-shadow: var(--shadow-soft);
    transform: rotate(-1.2deg);
    border-left: 5px solid var(--pastel-pink-deep);
}

/* Hiệu ứng mép giấy xé bên dưới */
.torn-paper-note::after {
    content: "";
    position: absolute;
    left: 0;
    right: 0;
    bottom: -12px;
    height: 14px;
    background: #FFFDF9;
    clip-path: polygon(
        0% 0%, 4% 95%, 8% 15%, 13% 90%, 18% 20%, 23% 95%, 28% 15%, 33% 88%,
        38% 12%, 43% 92%, 48% 20%, 53% 95%, 58% 15%, 63% 88%, 68% 18%,
        73% 92%, 78% 15%, 83% 94%, 88% 18%, 93% 90%, 97% 20%, 100% 95%, 100% 0%
    );
}

.push-pin {
    position: absolute;
    top: -10px;
    left: 32px;
    width: 22px;
    height: 22px;
    border-radius: 50%;
    background: radial-gradient(circle at 35% 35%, #FF8FAB, #D90429);
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.25);
}

.tape-corner-right {
    top: -10px;
    right: -18px;
    transform: rotate(24deg);
}

.note-heading {
    font-family: 'Caveat', cursive;
    font-size: 2.1rem;
    color: var(--ink-brown);
    margin-bottom: 14px;
}

.lined-paper-body {
    background-image: repeating-linear-gradient(
        transparent,
        transparent 31px,
        #E8D8C8 31px,
        #E8D8C8 32px
    );
    line-height: 32px;
    font-size: 1rem;
    color: var(--ink-brown);
}

.lined-paper-body p {
    margin-bottom: 16px;
}

.marker-highlight {
    padding: 2px 8px;
    border-radius: 6px;
    font-weight: 700;
}

.hl-yellow { background: var(--butter-yellow); }
.hl-blue { background: var(--sky-blue); }
.hl-pink { background: var(--pastel-pink); }
.hl-mint { background: var(--mint-green); }

.doodle-signature {
    margin-top: 14px;
    text-align: right;
    font-family: 'Caveat', cursive;
    font-size: 1.15rem;
    font-weight: 700;
    color: var(--pastel-pink-deep);
}

/* Danh sách 3 thông tin chung trên trang sổ */
.general-info-notes {
    margin-top: 20px;
    padding-top: 16px;
    border-top: 2px dashed #E8D8C8;
}

.general-info-title {
    font-size: 1.05rem;
    font-weight: 700;
    color: var(--ink-brown);
    margin-bottom: 12px;
}

.scrapbook-facts-list {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.fact-item {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 10px 14px;
    border-radius: 12px;
    border: 2px solid var(--ink-brown);
    font-size: 0.95rem;
    box-shadow: 3px 3px 0 rgba(74, 62, 61, 0.12);
    transition: transform 0.2s ease;
}

.fact-item:hover {
    transform: translateX(4px) rotate(-0.5deg);
}

.fact-pink { background: var(--pastel-pink); }
.fact-mint { background: var(--mint-green); }
.fact-sky { background: var(--sky-blue); }

.fact-pin {
    font-size: 1.25rem;
}

.ticket-mint { background: var(--mint-green); }

/* Giấy Caro (Grid Memo Card) */
.grid-memo-card {
    position: relative;
    background-color: #FFFDF8;
    background-image:
        linear-gradient(#DCEEFB 1.5px, transparent 1.5px),
        linear-gradient(90deg, #DCEEFB 1.5px, transparent 1.5px);
    background-size: 20px 20px;
    border: 2.5px solid #BDE0FE;
    border-radius: 20px;
    padding: 28px 24px;
    box-shadow: var(--shadow-soft);
    transform: rotate(1.2deg);
}

.grid-memo-card .washi-tape {
    top: -13px;
    left: 38%;
    transform: rotate(-3deg);
}

.memo-title {
    font-family: 'Caveat', cursive;
    font-size: 1.9rem;
    margin-bottom: 6px;
}

.memo-desc {
    font-size: 0.92rem;
    color: var(--ink-soft);
    margin-bottom: 16px;
}

.memo-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-bottom: 16px;
}

/* Nút bấm Bouncy Kawaii */
.bouncy-btn {
    font-family: 'Mali', cursive;
    font-weight: 600;
    font-size: 0.9rem;
    padding: 9px 16px;
    border-radius: 99px;
    border: 2.5px solid var(--ink-brown);
    background: var(--butter-yellow);
    color: var(--ink-brown);
    box-shadow: 0 4px 0 var(--ink-brown);
    transition: transform 0.18s cubic-bezier(0.34, 1.56, 0.64, 1), box-shadow 0.18s, background-color 0.2s;
}

.bouncy-btn.small-btn {
    padding: 4px 12px;
    font-size: 0.82rem;
}

.btn-pink { background: var(--pastel-pink); }
.btn-butter { background: var(--butter-yellow); }
.btn-mint { background: var(--mint-green); }

.bouncy-btn:hover {
    transform: translateY(-3px) scale(1.04);
    box-shadow: 0 7px 0 var(--ink-brown);
}

.bouncy-btn:active {
    transform: translateY(2px) scale(0.97);
    box-shadow: 0 2px 0 var(--ink-brown);
}

.stamp-canvas {
    min-height: 44px;
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    align-items: center;
}

.stamp-badge {
    display: inline-block;
    font-family: 'Patrick Hand', cursive;
    font-size: 0.95rem;
    font-weight: 700;
    color: #D90429;
    border: 2px dashed #D90429;
    padding: 3px 12px;
    border-radius: 8px;
    transform: rotate(-5deg);
    background: rgba(255, 202, 212, 0.25);
    animation: stampPop 0.3s cubic-bezier(0.34, 1.56, 0.64, 1);
}

@keyframes stampPop {
    0% { transform: scale(1.8) rotate(-15deg); opacity: 0; }
    100% { transform: scale(1) rotate(-5deg); opacity: 1; }
}

/* =====================================================
   MÁY NGHE NHẠC MINI RETRO CASSETTE
   ===================================================== */
.retro-cassette-widget {
    position: relative;
    background: #FFF6FA;
    border: 3px solid var(--ink-brown);
    border-radius: 26px;
    padding: 26px 22px 22px;
    box-shadow: 6px 8px 0 var(--pastel-pink-deep), var(--shadow-soft);
    transform: rotate(1.4deg);
}

.retro-cassette-widget .washi-tape {
    top: -14px;
    left: 50%;
    transform: translateX(-50%) rotate(3deg);
}

.player-top-bar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    font-family: 'Patrick Hand', cursive;
    font-size: 0.95rem;
    letter-spacing: 0.05em;
    margin-bottom: 12px;
}

.player-led {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: #ccc;
    border: 2px solid var(--ink-brown);
    transition: background-color 0.3s, box-shadow 0.3s;
}

.player-led.playing {
    background: #52B788;
    box-shadow: 0 0 10px #52B788;
}

/* Thân băng Cassette */
.cassette-body {
    --shell-bg: #FFCAD4;
    background: var(--shell-bg);
    border: 3px solid var(--ink-brown);
    border-radius: 16px;
    padding: 14px 14px 8px;
    box-shadow: inset 0 -4px 0 rgba(0,0,0,0.08);
    transition: background-color 0.35s ease;
}

.cassette-body.shell-mint { --shell-bg: #B7E4C7; }
.cassette-body.shell-butter { --shell-bg: #FFF1A8; }
.cassette-body.shell-sky { --shell-bg: #BDE0FE; }
.cassette-body.shell-lavender { --shell-bg: #E5D4FF; }

.cassette-label {
    background: #FFFDF9;
    border: 2px solid var(--ink-brown);
    border-radius: 10px;
    padding: 10px 12px 14px;
    position: relative;
    overflow: hidden;
}

.label-stripes span {
    display: block;
    height: 4px;
    border-radius: 2px;
    margin-bottom: 3px;
}

.stripe-1 { background: #FF8FAB; }
.stripe-2 { background: #FFD166; }
.stripe-3 { background: #72EFDD; margin-bottom: 8px !important; }

.track-title-box {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 10px;
    font-family: 'Patrick Hand', cursive;
    font-size: 1.05rem;
}

.side-tag {
    background: var(--ink-brown);
    color: #FFF;
    font-size: 0.72rem;
    padding: 2px 6px;
    border-radius: 4px;
}

.cassette-window {
    background: #3D3534;
    border: 2px solid var(--ink-brown);
    border-radius: 99px;
    padding: 8px 18px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 10px;
}

.spool {
    width: 34px;
    height: 34px;
    border-radius: 50%;
    background: #FFFDF9;
    border: 3px solid #FFD166;
    display: flex;
    align-items: center;
    justify-content: center;
}

.spool-teeth {
    width: 14px;
    height: 14px;
    border: 2px dashed var(--ink-brown);
    border-radius: 50%;
}

.spool.spinning {
    animation: spinSpool 2.4s linear infinite;
}

@keyframes spinSpool {
    to { transform: rotate(360deg); }
}

.tape-ribbon {
    flex: 1;
    height: 22px;
    background: #272120;
    border-radius: 6px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.music-visualizer {
    display: flex;
    align-items: flex-end;
    gap: 4px;
    height: 14px;
}

.music-visualizer span {
    width: 4px;
    height: 4px;
    background: #FFD166;
    border-radius: 2px;
    transition: height 0.15s ease;
}

.music-visualizer.active span:nth-child(1) { animation: eqBar 0.55s ease-in-out infinite alternate; }
.music-visualizer.active span:nth-child(2) { animation: eqBar 0.4s ease-in-out 0.1s infinite alternate; background: #FF8FAB; }
.music-visualizer.active span:nth-child(3) { animation: eqBar 0.65s ease-in-out 0.2s infinite alternate; background: #72EFDD; }
.music-visualizer.active span:nth-child(4) { animation: eqBar 0.45s ease-in-out 0.15s infinite alternate; background: #FF8FAB; }
.music-visualizer.active span:nth-child(5) { animation: eqBar 0.5s ease-in-out 0.05s infinite alternate; }

@keyframes eqBar {
    0% { height: 4px; }
    100% { height: 15px; }
}

.cassette-bottom-trapezoid {
    margin-top: 8px;
    padding: 4px 12px 0;
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 0.72rem;
    font-weight: 700;
    color: var(--ink-brown);
}

/* Progress Bar */
.player-progress-wrap {
    display: flex;
    align-items: center;
    gap: 10px;
    margin: 16px 0 14px;
}

.time-label {
    font-family: 'Patrick Hand', cursive;
    font-size: 0.95rem;
    min-width: 32px;
}

.progress-bar-track {
    flex: 1;
    height: 12px;
    background: #FFFFFF;
    border: 2px solid var(--ink-brown);
    border-radius: 99px;
    position: relative;
}

.progress-bar-fill {
    width: 0%;
    height: 100%;
    background: linear-gradient(90deg, #FF8FAB, #FFD166, #74C69D);
    border-radius: 99px;
    transition: width 0.15s linear;
}

.progress-knob {
    position: absolute;
    top: 50%;
    left: 0%;
    transform: translate(-50%, -50%);
    font-size: 1rem;
    color: #FF5D8F;
    text-shadow: 0 1px 0 #FFF;
    transition: left 0.15s linear;
}

/* Cassette Buttons */
.player-controls {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
}

.cassette-btn {
    flex: 1;
    font-family: 'Mali', cursive;
    font-weight: 700;
    font-size: 0.86rem;
    padding: 8px 10px;
    border-radius: 12px;
    border: 2.5px solid var(--ink-brown);
    background: #FFFFFF;
    color: var(--ink-brown);
    box-shadow: 0 4px 0 var(--ink-brown);
    transition: transform 0.15s, box-shadow 0.15s, background-color 0.2s;
}

.play-main-btn {
    flex: 2;
    background: var(--butter-yellow);
}

.color-btn {
    background: var(--lavender);
}

.cassette-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 0 var(--ink-brown);
}

.cassette-btn:active {
    transform: translateY(2px);
    box-shadow: 0 1px 0 var(--ink-brown);
}

/* =====================================================
   TÚI ĐỰNG THẺ KỶ NIỆM (HANDMADE POCKET FRAME)
   ===================================================== */
.handmade-pocket-frame {
    position: relative;
    background: #FFF8EE;
    border: 3px dashed #E09F67;
    border-radius: 22px;
    padding: 26px 22px;
    box-shadow: var(--shadow-soft);
    transform: rotate(-1.5deg);
}

.tape-left-tilt {
    top: -12px;
    left: 24px;
    transform: rotate(-12deg);
}

.pocket-title {
    font-family: 'Caveat', cursive;
    font-size: 1.9rem;
    margin-bottom: 2px;
}

.pocket-hint {
    font-size: 0.85rem;
    color: var(--ink-soft);
    margin-bottom: 16px;
}

.tickets-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 12px;
}

.memory-ticket {
    position: relative;
    border: 2px dashed var(--ink-brown);
    border-radius: 14px;
    padding: 14px 12px;
    font-family: 'Patrick Hand', cursive;
    font-size: 1.05rem;
    color: var(--ink-brown);
    text-align: center;
    min-height: 68px;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 4px 10px rgba(0,0,0,0.06);
    transition: transform 0.3s cubic-bezier(0.34, 1.56, 0.64, 1);
}

.ticket-peach { background: var(--peach); }
.ticket-sky { background: var(--sky-blue); }
.ticket-butter { background: var(--butter-yellow); }
.ticket-lavender { background: var(--lavender); }

.memory-ticket:hover {
    transform: translateY(-4px) rotate(2deg);
}

.ticket-back {
    display: none;
    font-weight: 700;
    color: #B5179E;
}

.memory-ticket.flipped {
    transform: rotate(-3deg) scale(1.04);
    background: #FFFFFF;
}

.memory-ticket.flipped .ticket-front {
    display: none;
}

.memory-ticket.flipped .ticket-back {
    display: inline;
}

/* =====================================================
   FOOTER: TRANG CUỐI CUỐN NHẬT KÝ
   ===================================================== */
.scrapbook-footer {
    position: relative;
    background: var(--pastel-pink);
    background-image: radial-gradient(#FFFFFF 20%, transparent 21%);
    background-size: 18px 18px;
    border: 3px solid #FFFFFF;
    border-radius: 24px;
    padding: 28px 20px;
    text-align: center;
    box-shadow: var(--shadow-soft);
}

.hand-drawn-border {
    width: 100%;
    max-width: 420px;
    height: 24px;
    margin: 0 auto 8px;
    display: block;
}

.footer-stickers-row {
    display: flex;
    justify-content: center;
    gap: 18px;
    font-size: 1.7rem;
    margin-bottom: 10px;
}

.footer-charm {
    display: inline-block;
    filter: drop-shadow(0 2px 0 #FFF);
    transition: transform 0.25s cubic-bezier(0.34, 1.56, 0.64, 1);
}

.footer-charm:hover {
    transform: scale(1.35) rotate(15deg);
}

.footer-signoff {
    font-family: 'Caveat', cursive;
    font-size: 1.95rem;
    font-weight: 700;
    color: var(--ink-brown);
}

.footer-sub {
    font-family: 'Patrick Hand', cursive;
    font-size: 1rem;
    color: var(--ink-soft);
}

/* =====================================================
   RESPONSIVE & PREFERS-REDUCED-MOTION
   ===================================================== */
@media (max-width: 900px) {
    .polaroid-stack {
        grid-template-columns: repeat(2, 1fr);
        gap: 24px;
    }

    .freeform-scrapbook-spread {
        grid-template-columns: 1fr;
    }

    .scrapbook-binder {
        padding: 36px 24px 42px 36px;
    }

    .binder-rings {
        left: 6px;
        width: 18px;
    }

    .binder-rings span {
        width: 20px;
    }
}

@media (max-width: 560px) {
    .polaroid-stack {
        grid-template-columns: 1fr;
        max-width: 300px;
        margin: 0 auto;
    }

    .tickets-row {
        grid-template-columns: 1fr;
    }

    .postage-stamp {
        position: static;
        margin: 14px auto 0;
    }

    .corner-charms {
        right: 10px;
        bottom: 12px;
        flex-direction: row;
    }

    .charm-item {
        width: 46px;
        height: 46px;
        font-size: 1.45rem;
    }

    .charm-bubble {
        bottom: 58px;
        right: 0;
    }
}

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