:root{
  --sky-gold:    #FFE7B8;
  --sky-peach:   #FFB98C;
  --horizon:     #FF8F7A;
  --sea-teal:    #2E8F92;
  --sea-deep:    #124A52;
  --foam:        #EAFBF6;
  --apricot:     #FF9F68;
  --dusk-rose:   #E8697F;
  --ink:         #17211E;
  --ink-soft:    #3B4A46;
  --glow:        #FFD9A0;
}

*{ box-sizing:border-box; }
html,body{ height:100%; }
body{
  margin:0;
  min-height:100vh;
  display:flex;
  align-items:center;
  justify-content:center;
  padding:32px 20px;
  font-family:'Sen', sans-serif;
  color:var(--ink);
  overflow-x:hidden;
  position:relative;
  background:
    radial-gradient(ellipse 90% 55% at 50% 0%, var(--sky-gold) 0%, transparent 62%),
    linear-gradient(180deg, #FFF3DD 0%, var(--sky-gold) 26%, var(--sky-peach) 52%, var(--horizon) 74%, #E0716E 100%);
  background-attachment: fixed;
}

/* ================= SKY LAYER ================= */
.sky{ position:fixed; inset:0; overflow:hidden; pointer-events:none; z-index:0; }

.rays{
  position:fixed;
  top:-40vh; left:50%;
  width:900px; height:900px;
  margin-left:-450px;
  background: repeating-conic-gradient(from 0deg, rgba(255,246,214,0.32) 0deg 6deg, transparent 6deg 20deg);
  border-radius:50%;
  filter: blur(2px);
  opacity:0.55;
  mix-blend-mode: soft-light;
  animation: rotateRays 100s linear infinite;
  pointer-events:none;
  z-index:0;
}
@keyframes rotateRays{ from{ transform:rotate(0deg); } to{ transform:rotate(360deg); } }

.sun{
  position:fixed;
  bottom: 27vh; left:50%;
  width:280px; height:280px;
  margin-left:-140px;
  border-radius:50%;
  background: radial-gradient(circle, rgba(255,246,220,0.98) 0%, rgba(255,201,120,0.7) 45%, rgba(255,159,104,0) 75%);
  animation: breathe 7s ease-in-out infinite;
  pointer-events:none;
  z-index:0;
}
@keyframes breathe{
  0%,100%{ opacity:0.85; transform:scale(1); }
  50%{ opacity:1; transform:scale(1.05); }
}

.mote{
  position:absolute;
  bottom:-10%;
  border-radius:50%;
  background:radial-gradient(circle at 35% 35%, rgba(255,255,255,0.95), rgba(255,214,140,0.35) 55%, rgba(255,214,140,0) 75%);
  filter: blur(1px);
  opacity:0.7;
  animation: rise linear infinite;
}
@keyframes rise{
  0%   { transform: translate(0,0) scale(0.9); opacity:0; }
  10%  { opacity:0.75; }
  50%  { transform: translate(var(--drift,20px), -55vh) scale(1); }
  90%  { opacity:0.4; }
  100% { transform: translate(calc(var(--drift,20px) * 2), -110vh) scale(1.05); opacity:0; }
}

.glint{
  position:absolute;
  border-radius:50%;
  background: radial-gradient(circle, rgba(255,255,255,0.95), rgba(255,255,255,0) 70%);
  animation: twinkle ease-in-out infinite;
  pointer-events:none;
}
@keyframes twinkle{
  0%,100%{ opacity:0; transform:scale(0.4); }
  50%{ opacity:1; transform:scale(1); }
}

/* ================= HORIZON + SEA LAYER ================= */
.horizon-glow{
  position:fixed;
  left:0; right:0;
  bottom:26vh;
  height:9vh;
  background: linear-gradient(180deg, rgba(255,217,160,0.65), rgba(46,143,146,0.35), transparent);
  filter: blur(6px);
  pointer-events:none;
  z-index:1;
}

.sea-wrap{
  position:fixed;
  left:0; right:0; bottom:0;
  height:26vh;
  overflow:hidden;
  pointer-events:none;
  z-index:2;
}
.sea-base{
  position:absolute; inset:0;
  background: linear-gradient(180deg, var(--sea-teal) 0%, var(--sea-deep) 100%);
}
.reflection{
  position:absolute;
  left:50%; top:0; bottom:0;
  width:120px; margin-left:-60px;
  background: repeating-linear-gradient(180deg, rgba(255,244,214,0.55) 0px, rgba(255,244,214,0.12) 6px, transparent 12px, transparent 20px);
  filter: blur(1px);
  mix-blend-mode: screen;
  animation: shimmer 2.6s ease-in-out infinite;
}
@keyframes shimmer{ 0%,100%{ opacity:0.35; } 50%{ opacity:0.8; } }

.wave{
  position:absolute;
  left:0; bottom:0;
  width:200%; height:70%;
}
.wave svg{ width:100%; height:100%; display:block; }
.wave-back{ opacity:0.5; animation: waveDrift 26s linear infinite; }
.wave-mid{ opacity:0.8; bottom:-4%; animation: waveDrift 16s linear infinite reverse; }
@keyframes waveDrift{ from{ transform:translateX(0); } to{ transform:translateX(-50%); } }

/* ================= ANIMATION BỘ BA: THUYỀN & CÁ HEO ================= */
.boat-wrapper {
  position:fixed;
  bottom: 24.8vh;
  width:80px;
  height:60px;
  z-index:2;
  pointer-events:none;
  animation: sailAcross 80s linear infinite;
}
.boat {
  width: 100%;
  height: 100%;
  opacity:0.92;
  filter: drop-shadow(2px 4px 8px rgba(18,74,82,0.25));
  animation: boatBob 4s ease-in-out infinite;
}
@keyframes boatBob {
  0%, 100% { transform: translateY(0) rotate(-2deg); }
  50% { transform: translateY(-5px) rotate(2deg); }
}
@keyframes sailAcross{
  from{ transform:translateX(-10vw); }
  to{ transform:translateX(110vw); }
}

.dolphin {
  position: fixed;
  bottom: 23vh;
  width: 60px;
  height: 40px;
  z-index: 1; 
  pointer-events: none;
  animation: dolphinSail 35s linear infinite;
}
.dolphin svg {
  width: 100%; height: 100%;
  animation: dolphinJump 4s ease-out infinite;
}
@keyframes dolphinSail {
  0% { transform: translateX(-15vw); }
  100% { transform: translateX(115vw); }
}
@keyframes dolphinJump {
  0%, 100% { transform: translateY(30px) rotate(45deg); opacity: 0; }
  15% { opacity: 1; }
  50% { transform: translateY(-30px) rotate(-20deg); opacity: 1; }
  85% { opacity: 1; }
}

.cloud{
  position:fixed;
  z-index:2;
  pointer-events:none;
  opacity:0.7;
  filter: drop-shadow(1px 2px 3px rgba(18,74,82,0.1));
  animation: driftCloud linear infinite;
}
.cloud.cloud-back{ opacity:0.4; animation-duration:120s; }
.cloud.cloud-mid{ opacity:0.6; animation-duration:90s; }
.cloud.cloud-front{ opacity:0.8; animation-duration:60s; }
.cloud svg{
  width:100%;
  height:100%;
  display:block;
}
@keyframes driftCloud{
  from{ transform:translateX(-15vw); }
  to{ transform:translateX(115vw); }
}

@media (max-width: 560px){
  .sun{ width:200px; height:200px; margin-left:-100px; bottom:24vh; }
  .sea-wrap, .boat-wrapper { bottom:0; }
}

/* ================= POP-UP NHẠC ================= */
.music-popup-overlay {
  position: fixed; inset: 0;
  background: rgba(23,33,30,0.4);
  backdrop-filter: blur(4px);
  z-index: 999;
  display: flex; align-items: center; justify-content: center;
  opacity: 0; visibility: hidden;
  transition: opacity 0.4s ease, visibility 0.4s ease;
}
.music-popup-overlay.show {
  opacity: 1; visibility: visible;
}
.music-popup-content {
  background: #FFFAF0;
  padding: 30px;
  border-radius: 20px;
  text-align: center;
  max-width: 320px; width: 90%;
  box-shadow: 0 20px 40px rgba(18,74,82,0.2);
  transform: translateY(20px) scale(0.95);
  transition: transform 0.4s cubic-bezier(.34,1.56,.64,1);
}
.music-popup-overlay.show .music-popup-content {
  transform: translateY(0) scale(1);
}
.music-popup-content h3 {
  font-family: 'Fraunces', serif;
  margin: 10px 0; color: var(--ink); font-size: 20px;
}
.music-popup-content p {
  font-size: 13.5px; line-height: 1.5; color: var(--ink-soft); margin-bottom: 24px;
}
.music-popup-actions {
  display: flex; gap: 12px; justify-content: center;
}
.btn-yes, .btn-no {
  padding: 10px 20px; border-radius: 12px;
  font-family: 'Sen', sans-serif; font-weight: 700; cursor: pointer; border: none; font-size: 14px; transition: 0.2s;
}
.btn-yes { background: var(--sea-teal); color: #fff; box-shadow: 0 4px 10px rgba(46,143,146,0.3); }
.btn-yes:hover { transform: translateY(-2px); box-shadow: 0 6px 14px rgba(46,143,146,0.4); }
.btn-no { background: transparent; border: 1.5px solid rgba(23,33,30,0.2); color: var(--ink-soft); }
.btn-no:hover { background: rgba(23,33,30,0.05); }


/* ================= CARD ================= */
.stack{ position:relative; width:100%; max-width:460px; z-index:3; }
.stack::before, .stack::after{
  content:"";
  position:absolute; inset:0;
  background: var(--foam);
  border-radius:22px;
  box-shadow: 0 20px 40px rgba(18,74,82,0.16);
  pointer-events:none;
  z-index:0;
}
.stack::before{ transform: rotate(-4deg) translateY(6px); opacity:0.6; background:#FFF1DC; }
.stack::after{ transform: rotate(3deg) translateY(3px); opacity:0.8; background:#FFF1DC; }

.card{
  position:relative;
  overflow:hidden;
  z-index:1;
  background: #FFFAF0;
  border-radius:22px;
  padding:34px 30px 28px;
  box-shadow:
    0 2px 0 rgba(255,255,255,0.6) inset,
    0 30px 60px rgba(18,74,82,0.2);
  transition: transform 0.6s cubic-bezier(.34,1.56,.64,1), opacity 0.5s ease;
}
.card::before{
  content:"";
  position:absolute; inset:0;
  background-image:
    radial-gradient(rgba(23,33,30,0.035) 1px, transparent 1px),
    radial-gradient(rgba(23,33,30,0.025) 1px, transparent 1px);
  background-size: 26px 26px, 18px 18px;
  background-position: 0 0, 9px 9px;
  pointer-events:none;
}
.card.sending{
  transform: translate(130px, 30px) rotate(12deg) scale(0.78);
  opacity:0;
}

.seal{
  position:absolute;
  top:-16px; right:22px;
  width:52px; height:52px;
  border-radius:50%;
  background: radial-gradient(circle at 35% 30%, #FFE9BE, var(--apricot) 65%, var(--dusk-rose) 100%);
  box-shadow: 0 8px 16px rgba(18,74,82,0.3), inset 0 0 0 2px rgba(255,255,255,0.4);
  display:flex; align-items:center; justify-content:center;
  font-size:20px;
  transform: rotate(-8deg);
  z-index:2;
}

.school-banner{
  width:100%;
  height:120px;
  border-radius:16px;
  overflow:hidden;
  margin-bottom:18px;
  box-shadow:0 12px 26px rgba(18,74,82,0.22);
  border:2px solid rgba(255,255,255,0.7);
  position:relative;
}
.school-banner img{ width:100%; height:100%; object-fit:cover; display:block; animation: fadeIn 0.6s ease; }
.school-banner .banner-placeholder{
  width:100%; height:100%;
  display:flex; align-items:center; justify-content:center;
  text-align:center; padding:0 16px;
  background: linear-gradient(120deg, var(--sky-peach), var(--sea-teal));
  color:#fff; font-size:13px; font-weight:700; letter-spacing:0.02em;
}
@keyframes fadeIn{ from{ opacity:0; } to{ opacity:1; } }

.eyebrow{
  display:inline-flex; align-items:center; gap:6px;
  font-size:12px; letter-spacing:0.14em; text-transform:uppercase;
  color:var(--sea-teal); font-weight:700; margin-bottom:10px;
}
.eyebrow::before{ content:""; width:16px; height:1.5px; background:var(--sea-teal); display:inline-block; }

h1{
  font-family:'Fraunces', serif;
  font-weight:600; font-size:30px; line-height:1.15;
  margin:0 0 8px; color:var(--ink);
}
h1 em{ font-style:italic; font-weight:500; color:var(--apricot); }

.subtitle{ font-size:13.5px; color:var(--ink-soft); margin-bottom:22px; line-height:1.5; }

textarea{
  width:100%; min-height:130px; resize:vertical;
  padding:14px 16px; border-radius:14px;
  border:1.5px solid rgba(23,33,30,0.14);
  background:#fff; color:var(--ink);
  font-size:15px; line-height:1.6; font-family:'Sen', sans-serif;
  transition: border-color 0.25s, box-shadow 0.25s;
  position:relative; z-index:1;
}
textarea:focus{ outline:none; border-color:var(--sea-teal); box-shadow:0 0 0 4px rgba(46,143,146,0.15); }
textarea::placeholder{ color:rgba(23,33,30,0.35); }

.file-row{ margin-top:14px; }
.file-label{
  display:flex; align-items:center; justify-content:center; gap:8px;
  padding:12px; border:1.5px dashed rgba(23,33,30,0.25); border-radius:14px;
  color:var(--ink-soft); cursor:pointer; font-size:13.5px; font-weight:600;
  transition: 0.25s;
}
.file-label:hover{ border-color:var(--sea-teal); color:var(--sea-teal); background:rgba(46,143,146,0.06); }
input[type="file"]{ display:none; }

.polaroid{
  display:none; margin-top:12px; background:#fff;
  padding:8px 8px 22px; border-radius:4px;
  box-shadow:0 10px 20px rgba(18,74,82,0.2);
  transform:rotate(-2deg); position:relative;
  width:70%; margin-left:auto; margin-right:auto;
}
.polaroid::before{
  content:""; position:absolute; top:-10px; left:50%;
  width:46px; height:18px; margin-left:-23px;
  background:rgba(255,215,154,0.55); border:1px solid rgba(255,159,104,0.4);
}
.polaroid img{ display:block; width:100%; border-radius:2px; }

.captcha-row{
  margin-top:14px;
  padding:14px 16px;
  border-radius:14px;
  background: rgba(46,143,146,0.08);
  border:1.5px solid rgba(46,143,146,0.22);
}
.captcha-label{
  font-size:12.5px; font-weight:700; color:var(--ink-soft);
  margin-bottom:8px; display:flex; align-items:center; justify-content:space-between;
}
.captcha-refresh{
  border:none; background:none; cursor:pointer;
  font-size:15px; color:var(--sea-teal);
  transition: transform 0.4s ease;
}
.captcha-refresh:hover{ transform:rotate(180deg); }
.captcha-challenge{ display:flex; align-items:center; gap:12px; }
.captcha-suns{ font-size:20px; letter-spacing:3px; flex:1; }
.captcha-input{
  width:64px; padding:9px 10px; border-radius:10px;
  border:1.5px solid rgba(23,33,30,0.18);
  background:#fff; color:var(--ink); font-size:15px;
  text-align:center; font-family:'Sen', sans-serif;
}
.captcha-input:focus{ outline:none; border-color:var(--sea-teal); box-shadow:0 0 0 3px rgba(46,143,146,0.15); }

.honeypot{ position:absolute; left:-9999px; width:1px; height:1px; opacity:0; pointer-events:none; }

button.submit{
  position:relative; width:100%; margin-top:20px; padding:15px;
  border:none; border-radius:14px;
  background: linear-gradient(90deg, var(--apricot), var(--dusk-rose), var(--sea-teal));
  background-size:180% 100%;
  color:#fff; font-family:'Sen', sans-serif; font-size:15px; font-weight:700;
  letter-spacing:0.01em; cursor:pointer; overflow:hidden;
  transition: transform 0.2s ease, box-shadow 0.2s ease, background-position 0.6s ease;
  box-shadow: 0 10px 24px rgba(46,143,146,0.3);
}
button.submit:hover{ transform:translateY(-2px); background-position:100% 0; box-shadow:0 14px 28px rgba(46,143,146,0.4); }
button.submit:active{ transform:translateY(0); }
button.submit:disabled{ opacity:0.65; cursor:not-allowed; transform:none; }
button.submit::after{
  content:""; position:absolute; top:0; left:-60%; width:40%; height:100%;
  background:linear-gradient(120deg, transparent, rgba(255,255,255,0.55), transparent);
  transform:skewX(-20deg);
  animation: shine 3.2s ease-in-out infinite;
}
@keyframes shine{ 0%{ left:-60%; } 45%,100%{ left:120%; } }

.status{ margin-top:12px; text-align:center; font-size:13px; min-height:18px; font-weight:600; }
.status.ok{ color:#1E7A72; }
.status.err{ color:#D1546B; }

.note{ margin-top:18px; font-size:11.5px; color:rgba(23,33,30,0.5); text-align:center; line-height:1.6; }

.success-view{ display:none; text-align:center; padding:20px 6px 4px; }
.success-view .glow-circle{
  width:64px; height:64px; margin:0 auto 16px; border-radius:50%;
  background: radial-gradient(circle, #FFF6E0 0%, var(--glow) 70%, transparent 100%);
  display:flex; align-items:center; justify-content:center; font-size:26px;
  animation: pop 0.5s cubic-bezier(.34,1.56,.64,1);
}
@keyframes pop{ 0%{ transform:scale(0); } 70%{ transform:scale(1.1); } 100%{ transform:scale(1); } }
.success-view h2{ font-family:'Fraunces', serif; font-weight:600; font-size:22px; margin:0 0 8px; color:var(--ink); }
.success-view p{ font-size:13.5px; color:var(--ink-soft); margin:0 0 20px; line-height:1.6; }
.success-view button{
  background:transparent; border:1.5px solid var(--sea-teal); color:var(--sea-teal);
  padding:10px 22px; border-radius:12px; font-family:'Sen', sans-serif;
  font-weight:700; font-size:13.5px; cursor:pointer; transition:0.25s;
}
.success-view button:hover{ background:var(--sea-teal); color:#fff; }

.music-toggle{
  position:fixed; top:20px; right:20px;
  width:52px; height:52px; border-radius:50%;
  border:none;
  background: radial-gradient(circle at 35% 30%, #FFF3D6, var(--apricot) 60%, var(--dusk-rose) 100%);
  box-shadow: 0 10px 22px rgba(46,143,146,0.35);
  font-size:20px;
  display:flex; align-items:center; justify-content:center;
  cursor:pointer; z-index:6;
  transition: transform 0.25s ease, box-shadow 0.25s ease;
}
.music-toggle:hover{ transform:scale(1.08); }
.music-toggle.playing{ animation: spin 4s linear infinite; }
@keyframes spin{ from{ transform:rotate(0); } to{ transform:rotate(360deg); } }

@media (prefers-reduced-motion: reduce){
  .mote, .sun, .rays, .glint, .dolphin svg, .wave-back, .wave-mid, .reflection, .boat, .boat-wrapper, button.submit::after, .music-toggle.playing{ animation:none !important; }
  .card{ transition:none; }
}
/* ================= CÁC TÍNH NĂNG MỚI (CHỦ ĐỀ & LOADING) ================= */

/* Form phân loại chủ đề */
.category-row {
  margin-bottom: 14px;
}
.category-select {
  width: 100%;
  padding: 14px 16px;
  border-radius: 14px;
  border: 1.5px solid rgba(23,33,30,0.14);
  background: #fff url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" width="16" height="16" fill="%2317211E" viewBox="0 0 16 16"><path d="M4 6l4 4 4-4z"/></svg>') no-repeat right 16px center;
  appearance: none; /* Ẩn mũi tên mặc định của trình duyệt */
  -webkit-appearance: none;
  color: var(--ink);
  font-size: 15px;
  font-family: 'Sen', sans-serif;
  font-weight: 600;
  cursor: pointer;
  transition: border-color 0.25s, box-shadow 0.25s;
  position: relative;
  z-index: 1;
}
.category-select:focus { 
  outline: none; 
  border-color: var(--sea-teal); 
  box-shadow: 0 0 0 4px rgba(46,143,146,0.15); 
}

/* Hiệu ứng Loading cho nút Gửi */
button.submit {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
}

.btn-loader {
  display: none; /* Ẩn mặc định */
  align-items: center;
  justify-content: center;
  gap: 2px;
  font-size: 22px;
  font-weight: 700;
  letter-spacing: 3px;
  line-height: 10px;
}

.btn-loader .dot {
  animation: dotBounce 1.4s infinite ease-in-out both;
}

/* Tạo độ trễ giữa các dấu chấm để tạo sóng chuyển động */
.btn-loader .dot:nth-child(1) { animation-delay: -0.32s; }
.btn-loader .dot:nth-child(2) { animation-delay: -0.16s; }
.btn-loader .dot:nth-child(3) { animation-delay: 0s; }

@keyframes dotBounce {
  0%, 80%, 100% { 
    transform: scale(0); 
    opacity: 0.3;
  } 
  40% { 
    transform: scale(1.0); 
    opacity: 1;
  }
}

/* Khi bấm gửi, ẩn chữ và hiện hiệu ứng dấu chấm */
button.submit.is-loading .btn-text {
  display: none;
}
button.submit.is-loading .btn-loader {
  display: flex;
}

/* ================= WIDGET & BANNER ÂM NHẠC MỚI ================= */

/* Widget nhỏ ở góc màn hình */
.music-widget {
  position: fixed;
  top: 20px;
  right: 20px;
  z-index: 999;
  cursor: pointer;
  background: rgba(255, 255, 255, 0.85);
  backdrop-filter: blur(8px);
  padding: 4px;
  border-radius: 50px;
  box-shadow: 0 8px 24px rgba(28, 110, 115, 0.18);
  border: 1.5px solid rgba(255, 255, 255, 0.6);
  display: flex;
  align-items: center;
  gap: 8px;
  transition: transform 0.3s cubic-bezier(0.34, 1.56, 0.64, 1), box-shadow 0.3s ease;
}
.music-widget:hover {
  transform: scale(1.08);
  box-shadow: 0 12px 30px rgba(28, 110, 115, 0.25);
}

/* Ảnh thumbnail bài hát dạng tròn */
.music-thumb-wrap {
  width: 42px;
  height: 42px;
  border-radius: 50%;
  overflow: hidden;
  position: relative;
  border: 2px solid var(--sea-teal);
}
.music-thumb-wrap img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s ease;
}
.music-widget.playing .music-thumb-wrap img {
  animation: rotateThumb 8s linear infinite;
}
@keyframes rotateThumb {
  from { transform: rotate(0deg); }
  to { transform: rotate(360deg); }
}

/* Sóng nhạc mini trên ảnh khi đang phát */
.music-wave-bars {
  position: absolute;
  inset: 0;
  background: rgba(0, 0, 0, 0.35);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 2px;
  opacity: 0;
  transition: opacity 0.3s ease;
}
.music-widget.playing .music-wave-bars {
  opacity: 1;
}
.music-wave-bars span {
  width: 3px;
  height: 12px;
  background: #fff;
  border-radius: 2px;
  animation: waveBar 0.6s ease-in-out infinite alternate;
}
.music-wave-bars span:nth-child(2) { animation-delay: 0.2s; }
.music-wave-bars span:nth-child(3) { animation-delay: 0.4s; }
@keyframes waveBar {
  from { height: 4px; }
  to { height: 18px; }
}

/* Banner pop-up điều khiển nhạc */
.music-control-banner {
  position: fixed;
  top: 76px;
  right: 20px;
  z-index: 998;
  background: #ffffff;
  padding: 12px 18px;
  border-radius: 20px;
  box-shadow: 0 14px 35px rgba(23, 33, 30, 0.15);
  border: 1px solid rgba(23, 33, 30, 0.08);
  width: 290px;
  opacity: 0;
  visibility: hidden;
  transform: translateY(-10px) scale(0.95);
  transition: all 0.35s cubic-bezier(0.16, 1, 0.3, 1);
}
.music-control-banner.show {
  opacity: 1;
  visibility: visible;
  transform: translateY(0) scale(1);
}

.banner-content-inner {
  display: flex;
  align-items: center;
  gap: 12px;
}
.banner-thumb {
  width: 48px;
  height: 48px;
  border-radius: 12px;
  object-fit: cover;
  flex-shrink: 0;
}
.banner-song-info {
  flex-grow: 1;
  min-width: 0;
}
.banner-song-title {
  font-size: 14px;
  font-weight: 600;
  color: var(--ink);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.banner-song-status {
  font-size: 12px;
  color: #666;
  margin-top: 2px;
}

.banner-controls {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-top: 8px;
  padding-top: 8px;
  border-top: 1px solid rgba(0,0,0,0.06);
}
.banner-btn {
  background: var(--sea-teal);
  color: #fff;
  border: none;
  width: 32px;
  height: 32px;
  border-radius: 50%;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
  transition: transform 0.2s ease, background 0.2s ease;
}
.banner-btn:hover {
  transform: scale(1.1);
  background: #1c6e73;
}

.volume-control-wrap {
  display: flex;
  align-items: center;
  gap: 6px;
  flex-grow: 1;
}
.vol-icon {
  font-size: 12px;
}
.volume-control-wrap input[type="range"] {
  width: 100%;
  accent-color: var(--sea-teal);
  cursor: pointer;
  height: 4px;
}