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

:root{
  --bg:#eef5fb;
  --bg2:#e2eff8;
  --card:#ffffff;
  --teal:#3390c6;
  --teal-light:#5aaedd;
  --teal-dark:#2876a8;
  --teal-glow:rgba(51,144,198,.18);
  --teal-pale:rgba(51,144,198,.08);
  --text:#1a2a3a;
  --text-sub:#5a7a9a;
  --border:rgba(51,144,198,.22);
  --border-solid:#c0d8f0;
  --shadow:0 4px 24px rgba(51,144,198,.12),0 1px 4px rgba(0,0,0,.06);
  --radius:14px;
}

html{font-size:16px;-webkit-font-smoothing:antialiased}

body{
  font-family:'M PLUS Rounded 1c','Zen Maru Gothic',sans-serif;
  background:var(--bg);
  color:var(--text);
  min-height:100vh;
  overflow-x:hidden;
}

/* Soft gradient background */
body::before{
  content:'';position:fixed;inset:0;pointer-events:none;z-index:0;
  background:
    radial-gradient(ellipse 70% 50% at 50% -5%,rgba(51,144,198,.12) 0%,transparent 70%),
    radial-gradient(ellipse 40% 30% at 95% 80%,rgba(90,174,221,.10) 0%,transparent 60%),
    radial-gradient(ellipse 35% 25% at 5%  85%,rgba(51,144,198,.07) 0%,transparent 60%);
}

/* Soft sparkles */
body::after{
  content:'';position:fixed;inset:0;pointer-events:none;z-index:0;
  background-image:
    radial-gradient(1.5px 1.5px at  8% 10%,rgba(51,144,198,.35) 0%,transparent 100%),
    radial-gradient(1px   1px   at 25% 28%,rgba(51,144,198,.25) 0%,transparent 100%),
    radial-gradient(2px   2px   at 40%  6%,rgba(90,174,221,.4)  0%,transparent 100%),
    radial-gradient(1px   1px   at 57% 18%,rgba(51,144,198,.3)  0%,transparent 100%),
    radial-gradient(1.5px 1.5px at 72%  4%,rgba(51,144,198,.35) 0%,transparent 100%),
    radial-gradient(1px   1px   at 88% 14%,rgba(90,174,221,.3)  0%,transparent 100%),
    radial-gradient(1.5px 1.5px at 94% 35%,rgba(51,144,198,.28) 0%,transparent 100%),
    radial-gradient(1px   1px   at 15% 52%,rgba(51,144,198,.2)  0%,transparent 100%),
    radial-gradient(1px   1px   at 50% 60%,rgba(90,174,221,.22) 0%,transparent 100%),
    radial-gradient(1.5px 1.5px at 78% 55%,rgba(51,144,198,.28) 0%,transparent 100%),
    radial-gradient(1px   1px   at 35% 76%,rgba(51,144,198,.2)  0%,transparent 100%),
    radial-gradient(1px   1px   at 62% 84%,rgba(90,174,221,.25) 0%,transparent 100%),
    radial-gradient(1.5px 1.5px at 90% 70%,rgba(51,144,198,.22) 0%,transparent 100%),
    radial-gradient(1px   1px   at  4% 90%,rgba(51,144,198,.2)  0%,transparent 100%),
    radial-gradient(1px   1px   at 46% 94%,rgba(90,174,221,.25) 0%,transparent 100%);
}

.container{
  max-width:860px;margin:0 auto;padding:24px 20px 60px;
  position:relative;z-index:1;
}

/* ===== Header ===== */
header{text-align:center;padding:44px 0 32px}

header::before{
  content:'✦';font-size:30px;display:block;margin-bottom:14px;
  color:var(--teal);
  text-shadow:0 0 12px var(--teal-glow),0 2px 8px rgba(51,144,198,.2);
  animation:twinkle 3.5s ease-in-out infinite;
}
@keyframes twinkle{
  0%,100%{opacity:.5;transform:scale(1) rotate(0deg)}
  50%{opacity:1;transform:scale(1.2) rotate(15deg)}
}

h1{
  font-family:'M PLUS Rounded 1c',sans-serif;
  font-weight:800;font-size:clamp(1.5rem,4vw,2.2rem);
  color:var(--text);line-height:1.3;letter-spacing:.04em;
}
h1 span{color:var(--teal)}

.subtitle{
  color:var(--text-sub);font-size:.88rem;margin-top:10px;letter-spacing:.1em;
}
.subtitle::before,.subtitle::after{content:' ◆ ';color:var(--teal);opacity:.45;font-size:.7em}

/* ===== Step dots ===== */
.steps{display:flex;gap:6px;justify-content:center;margin:28px 0 24px}
.step-dot{
  width:40px;height:3px;border-radius:2px;
  background:var(--border-solid);transition:all .4s;
}
.step-dot.active{
  background:var(--teal);width:60px;
  box-shadow:0 0 8px var(--teal-glow);
}
.step-dot.done{background:var(--teal-dark)}

/* ===== Section card ===== */
.section{
  background:var(--card);
  border-radius:var(--radius);
  padding:28px 24px;margin-bottom:20px;
  box-shadow:var(--shadow);
  border:1px solid var(--border-solid);
  animation:fadeUp .5s ease both;
  position:relative;overflow:hidden;
}
/* Top accent line */
.section::before{
  content:'';position:absolute;top:0;left:0;right:0;height:2px;
  background:linear-gradient(90deg,transparent 0%,var(--teal-light) 30%,var(--teal) 50%,var(--teal-light) 70%,transparent 100%);
  opacity:.6;
}
/* Corner sparkle */
.section::after{
  content:'✦';position:absolute;top:10px;right:14px;
  font-size:9px;color:var(--teal);opacity:.25;
}

@keyframes fadeUp{from{opacity:0;transform:translateY(14px)}to{opacity:1;transform:translateY(0)}}

.section-title{
  font-family:'M PLUS Rounded 1c',sans-serif;
  font-weight:700;font-size:1.1rem;
  display:flex;align-items:center;gap:10px;
  margin-bottom:20px;color:var(--text);letter-spacing:.05em;
}
.section-title .num{
  display:inline-flex;align-items:center;justify-content:center;
  width:28px;height:28px;border-radius:50%;
  background:linear-gradient(135deg,var(--teal-light),var(--teal-dark));
  color:#fff;font-size:.8rem;font-weight:700;flex-shrink:0;
  box-shadow:0 2px 8px var(--teal-glow);
}

/* ===== Toggle ===== */
.toggle-row{
  display:flex;align-items:center;gap:10px;
  padding:12px 16px;border-radius:10px;
  background:var(--teal-pale);margin-bottom:20px;
  border:1px solid var(--border);
}
.toggle-row .toggle-label{font-size:.85rem;font-weight:500;flex:1;color:var(--text)}
.toggle-row .toggle-hint{font-size:.72rem;color:var(--text-sub);margin-top:2px}

.switch{position:relative;width:48px;height:26px;flex-shrink:0}
.switch input{display:none}
.switch .slider{
  position:absolute;inset:0;border-radius:13px;
  background:var(--border-solid);cursor:pointer;transition:all .3s;
}
.switch .slider::before{
  content:'';position:absolute;
  width:20px;height:20px;border-radius:50%;
  background:#fff;top:3px;left:3px;
  transition:transform .3s;box-shadow:0 1px 4px rgba(0,0,0,.2);
}
.switch input:checked+.slider{
  background:linear-gradient(135deg,var(--teal-light),var(--teal-dark));
  box-shadow:0 0 8px var(--teal-glow);
}
.switch input:checked+.slider::before{transform:translateX(22px)}

/* ===== Upload area ===== */
.upload-area{display:flex;justify-content:center;padding:12px 0}
.upload-slot{
  width:260px;aspect-ratio:3/4;border-radius:14px;
  border:2px dashed var(--border-solid);
  display:flex;flex-direction:column;align-items:center;justify-content:center;
  cursor:pointer;transition:all .3s;position:relative;overflow:hidden;
  background:var(--teal-pale);
}
.upload-slot:hover{
  border-color:var(--teal);
  background:rgba(51,144,198,.12);
  transform:translateY(-2px);
  box-shadow:0 8px 24px var(--teal-glow);
}
.upload-slot.has-image{
  border:2px solid var(--teal);
  box-shadow:0 4px 16px var(--teal-glow);
}
.upload-slot .placeholder{
  color:var(--text-sub);font-size:.85rem;text-align:center;pointer-events:none;
}
.upload-slot .upload-icon{font-size:2.4rem;display:block;margin-bottom:8px}
.upload-slot img{
  width:100%;height:100%;object-fit:cover;
  position:absolute;inset:0;border-radius:12px;
}
.upload-slot .remove-btn{
  position:absolute;top:8px;right:8px;z-index:3;
  width:26px;height:26px;border-radius:50%;
  background:rgba(0,0,0,.5);color:#fff;border:none;
  cursor:pointer;font-size:14px;display:none;
  align-items:center;justify-content:center;line-height:1;
}
.upload-slot.has-image .remove-btn{display:flex}
.upload-slot input{display:none}

/* ===== Progress bar ===== */
.progress-bar{
  width:100%;height:3px;border-radius:2px;
  background:var(--border-solid);overflow:hidden;
  margin-top:12px;display:none;
}
.progress-bar.active{display:block}
.progress-bar .fill{
  height:100%;
  background:linear-gradient(90deg,var(--teal-dark),var(--teal),var(--teal-light));
  border-radius:2px;transition:width .3s;width:0;
}

/* ===== Preview ===== */
.preview-area{
  background:var(--bg);border-radius:12px;
  padding:12px;margin-bottom:10px;
  border:1px solid var(--border-solid);
}
.preview-hint{font-size:.78rem;color:var(--text-sub);margin-bottom:16px;letter-spacing:.04em}

/* ===== Text inputs ===== */
.text-grid{display:flex;flex-direction:column;gap:16px}
.text-group{display:flex;flex-direction:column;gap:6px}
.text-label{display:flex;align-items:center;gap:8px;font-size:.85rem;font-weight:700;color:var(--text)}
.chip{padding:4px 14px;border-radius:20px;font-size:.8rem;font-weight:700}
.chip.teal{
  background:linear-gradient(135deg,var(--teal),var(--teal-dark));
  color:#fff;
  box-shadow:0 2px 8px var(--teal-glow);
}
.text-input{
  width:100%;padding:12px 14px;border-radius:10px;
  border:1.5px solid var(--border-solid);
  font-family:'Zen Maru Gothic','M PLUS Rounded 1c',sans-serif;
  font-size:.9rem;color:var(--text);background:var(--card);
  resize:vertical;transition:border-color .2s,box-shadow .2s;line-height:1.7;
}
.text-input:focus{
  outline:none;border-color:var(--teal);
  box-shadow:0 0 0 3px rgba(51,144,198,.14);
}
.text-input::placeholder{color:var(--text-sub);opacity:.6}

/* ===== Controls ===== */
.controls-row{display:flex;gap:12px;flex-wrap:wrap;align-items:center;margin-top:16px}

/* ===== Buttons ===== */
.btn{
  padding:10px 20px;border-radius:10px;border:none;
  font-family:inherit;font-weight:700;font-size:.9rem;
  cursor:pointer;transition:all .25s;
  display:inline-flex;align-items:center;gap:6px;
  letter-spacing:.04em;
}
.btn-primary{
  background:linear-gradient(135deg,var(--teal-light),var(--teal) 50%,var(--teal-dark));
  color:#fff;
  box-shadow:0 4px 14px var(--teal-glow),0 1px 0 rgba(255,255,255,.2) inset;
  position:relative;overflow:hidden;
}
.btn-primary::after{
  content:'';position:absolute;inset:0;
  background:linear-gradient(135deg,rgba(255,255,255,.18) 0%,transparent 60%);
  border-radius:inherit;
}
.btn-primary:hover{
  transform:translateY(-2px);
  box-shadow:0 8px 24px rgba(51,144,198,.35);
}
.btn-primary:disabled{opacity:.35;pointer-events:none}

.btn-secondary{
  background:var(--card);color:var(--text);
  border:1.5px solid var(--border-solid);
}
.btn-secondary:hover{
  border-color:var(--teal);color:var(--teal);
  box-shadow:0 2px 10px var(--teal-glow);
}
.btn-lg{padding:14px 28px;font-size:1rem;border-radius:12px}
.btn-block{width:100%;justify-content:center}

/* ===== Result ===== */
.result-area{text-align:center}
.result-area canvas{
  max-width:100%;border-radius:10px;
  box-shadow:0 4px 32px rgba(51,144,198,.2),0 0 0 1px var(--border-solid);
}
.result-actions{
  display:flex;gap:10px;justify-content:center;
  flex-wrap:wrap;margin-top:20px;
}

/* ===== Editor ===== */
.editor-canvas-wrap{
  width:100%;max-width:360px;margin:0 auto 16px;
  aspect-ratio:508/792;
  background:var(--bg);border-radius:12px;
  position:relative;overflow:hidden;cursor:grab;
  border:1.5px solid var(--border-solid);display:block;
  touch-action:none;user-select:none;-webkit-user-select:none;
}
.editor-canvas-wrap:active{cursor:grabbing}
.editor-canvas-wrap canvas{position:absolute;inset:0;width:100%;height:100%}
.editor-controls{display:flex;flex-direction:column;gap:12px;margin-bottom:4px}

.slider-group{display:flex;align-items:center;gap:10px}
.slider-group label{font-size:.8rem;color:var(--text-sub);min-width:44px;font-weight:500}
.slider-group input[type="range"]{
  flex:1;height:4px;-webkit-appearance:none;
  background:var(--border-solid);border-radius:2px;outline:none;
}
.slider-group input[type="range"]::-webkit-slider-thumb{
  -webkit-appearance:none;width:18px;height:18px;border-radius:50%;
  background:linear-gradient(135deg,var(--teal-light),var(--teal-dark));
  cursor:pointer;box-shadow:0 1px 4px rgba(0,0,0,.2);
}

/* ===== Font selector ===== */
.font-selector-row{
  display:flex;align-items:center;gap:10px;
  margin-bottom:16px;flex-wrap:wrap;
}
.font-selector-label{font-size:.8rem;color:var(--text-sub);font-weight:500;white-space:nowrap}
.font-chips{display:flex;gap:8px;flex-wrap:wrap}
.font-chip{
  padding:6px 14px;border-radius:20px;
  border:1.5px solid var(--border-solid);
  background:var(--card);color:var(--text-sub);
  cursor:pointer;font-size:.88rem;transition:all .2s;
}
.font-chip.active{
  background:linear-gradient(135deg,var(--teal),var(--teal-dark));
  color:#fff;border-color:var(--teal);
  box-shadow:0 2px 10px var(--teal-glow);
}
.font-chip:hover:not(.active){border-color:var(--teal);color:var(--teal)}

/* ===== Spinner ===== */
.spinner{
  width:18px;height:18px;
  border:2.5px solid rgba(51,144,198,.25);
  border-top-color:var(--teal);
  border-radius:50%;
  animation:spin .6s linear infinite;display:inline-block;
}
@keyframes spin{to{transform:rotate(360deg)}}

/* ===== Toast ===== */
.toast{
  position:fixed;bottom:24px;left:50%;
  transform:translateX(-50%) translateY(80px);
  background:var(--text);color:#eef5fb;
  padding:12px 24px;border-radius:12px;font-size:.85rem;
  font-weight:500;z-index:200;transition:transform .4s;
  box-shadow:0 8px 24px rgba(0,0,0,.2);white-space:nowrap;
}
.toast.show{transform:translateX(-50%) translateY(0)}

/* ===== Hidden ===== */
.hidden{display:none!important}

/* ===== Footer ===== */
footer{
  text-align:center;padding:28px 0 16px;
  color:var(--text-sub);font-size:.8rem;letter-spacing:.04em;
}
footer a{color:var(--teal);text-decoration:none}
footer a:hover{text-decoration:underline}

.tweet-embed{
  display:flex;justify-content:center;
  margin-bottom:16px;
}
.tweet-embed .twitter-tweet{margin:0 auto}
/* Fallback style when Twitter widget JS fails to load */
.tweet-embed blockquote.twitter-tweet:not(.twitter-tweet-rendered){
  max-width:500px;width:100%;
  background:var(--card);border:1px solid var(--border-solid);
  border-radius:12px;padding:16px 20px;
  font-size:.85rem;line-height:1.7;color:var(--text);
  text-align:left;
}
.tweet-embed blockquote.twitter-tweet:not(.twitter-tweet-rendered) a{
  color:var(--teal);text-decoration:none;
}
.tweet-embed blockquote.twitter-tweet:not(.twitter-tweet-rendered) a:hover{
  text-decoration:underline;
}

.license-section{
  margin-top:12px;padding-top:12px;
  border-top:1px solid var(--border-solid);
  font-size:.72rem;line-height:1.6;color:var(--text-sub);
}
.license-section summary{
  cursor:pointer;font-weight:500;font-size:.75rem;
  color:var(--text-sub);list-style:none;
  display:inline-flex;align-items:center;gap:4px;
}
.license-section summary::-webkit-details-marker{display:none}
.license-section summary::before{content:'⚖️';font-size:.85rem}
.license-section .license-detail{
  margin-top:8px;text-align:left;
  background:var(--teal-pale);border:1px solid var(--border);
  padding:12px 16px;border-radius:8px;
  max-width:500px;margin-left:auto;margin-right:auto;
}
.license-section .license-detail p{margin-bottom:6px}
.license-section .license-detail a{word-break:break-all}

/* ===== Responsive ===== */
@media(max-width:600px){
  .container{padding:16px 12px 40px}
  header{padding:28px 0 18px}
  header::before{font-size:24px}
  .section{padding:18px 14px}
  .upload-slot{width:min(240px,70vw)}
  .editor-canvas-wrap{max-width:min(320px,80vw)}
  .slider-group input[type="range"]{height:6px}
  .slider-group input[type="range"]::-webkit-slider-thumb{width:22px;height:22px}
  .slider-group label{min-width:36px}
  .font-chips{gap:6px}
  .font-chip{padding:5px 11px;font-size:.82rem}
  .btn-lg{padding:12px 20px;font-size:.95rem}
  .controls-row{gap:8px}
  .result-actions{flex-direction:column}
  .result-actions .btn{width:100%;justify-content:center}
  .preview-hint{display:none}
}