*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
:root{
  --bg:#f0ece4;
  --card:#fff;
  --accent:#4a7c6f;
  --accent2:#c47d5a;
  --accent3:#6b8fa3;
  --text:#2d2a26;
  --text-sub:#7a756d;
  --border:#d8d2c8;
  --shadow:0 2px 20px rgba(45,42,38,.08);
  --radius:16px;
  --photo-bg:#b8d4e3;
}
html{font-size:16px;-webkit-font-smoothing:antialiased}
body{
  font-family:'Zen Maru Gothic','M PLUS Rounded 1c',sans-serif;
  background:var(--bg);
  color:var(--text);
  min-height:100vh;
  overflow-x:hidden;
}

/* Background texture */
body::before{
  content:'';position:fixed;inset:0;
  background:
    radial-gradient(circle at 20% 30%, rgba(74,124,111,.06) 0%, transparent 50%),
    radial-gradient(circle at 80% 70%, rgba(196,125,90,.06) 0%, transparent 50%),
    radial-gradient(circle at 50% 50%, rgba(107,143,163,.04) 0%, transparent 60%);
  pointer-events:none;z-index:0;
}

.container{
  max-width:900px;margin:0 auto;padding:24px 20px 60px;
  position:relative;z-index:1;
}

/* Header */
header{text-align:center;padding:40px 0 32px;position:relative}
header::before{
  content:'📸';font-size:48px;display:block;margin-bottom:12px;
  filter:drop-shadow(0 4px 8px rgba(0,0,0,.1));
}
h1{
  font-family:'M PLUS Rounded 1c',sans-serif;
  font-weight:800;font-size:clamp(1.6rem,4vw,2.4rem);
  color:var(--text);letter-spacing:-.02em;
  line-height:1.3;
}
h1 span{
  background:linear-gradient(135deg,var(--accent),var(--accent3));
  -webkit-background-clip:text;-webkit-text-fill-color:transparent;
  background-clip:text;
}
.subtitle{
  color:var(--text-sub);font-size:.95rem;margin-top:8px;
  font-weight:400;
}

/* Steps indicator */
.steps{
  display:flex;gap:4px;justify-content:center;margin:32px 0 28px;
}
.step-dot{
  width:40px;height:4px;border-radius:2px;
  background:var(--border);transition:all .4s ease;
}
.step-dot.active{background:var(--accent);width:56px}
.step-dot.done{background:var(--accent2)}

/* Section */
.section{
  background:var(--card);border-radius:var(--radius);
  padding:28px 24px;margin-bottom:20px;
  box-shadow:var(--shadow);border:1px solid rgba(216,210,200,.5);
  animation:fadeUp .5s ease both;
}
@keyframes fadeUp{from{opacity:0;transform:translateY(16px)}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:16px;color:var(--text);
}
.section-title .num{
  display:inline-flex;align-items:center;justify-content:center;
  width:28px;height:28px;border-radius:50%;
  background:var(--accent);color:#fff;
  font-size:.8rem;font-weight:700;flex-shrink:0;
}

/* Upload Grid */
.upload-grid{
  display:grid;grid-template-columns:repeat(3,1fr);
  gap:12px;
}
@media(max-width:500px){.upload-grid{grid-template-columns:repeat(2,1fr)}}

.upload-slot{
  aspect-ratio:3/4;border-radius:12px;
  border:2px dashed var(--border);
  display:flex;flex-direction:column;align-items:center;justify-content:center;
  cursor:pointer;transition:all .3s ease;
  position:relative;overflow:hidden;
  background:rgba(240,236,228,.5);
}
.upload-slot:hover{
  border-color:var(--accent);background:rgba(74,124,111,.04);
  transform:translateY(-2px);
}
.upload-slot.has-image{border:2px solid var(--accent);background:var(--photo-bg)}
.upload-slot .placeholder{
  color:var(--text-sub);font-size:.85rem;text-align:center;
  pointer-events:none;
}
.upload-slot .placeholder .icon{font-size:1.8rem;margin-bottom:6px;display:block}
.upload-slot .slot-label{
  font-size:.7rem;font-weight:700;color:var(--accent);
  position:absolute;top:8px;left:8px;
  background:rgba(255,255,255,.9);padding:2px 8px;
  border-radius:20px;z-index:2;
}
.upload-slot img{
  width:100%;height:100%;object-fit:cover;
  position:absolute;inset:0;
}
.upload-slot .remove-btn{
  position:absolute;top:8px;right:8px;z-index:3;
  width:24px;height:24px;border-radius:50%;
  background:rgba(0,0,0,.6);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}

/* Controls */
.controls-row{
  display:flex;gap:12px;flex-wrap:wrap;align-items:center;
  margin-top:16px;
}
.control-group{display:flex;flex-direction:column;gap:4px}
.control-group label{font-size:.75rem;color:var(--text-sub);font-weight:500}
.control-group select,
.control-group input[type="color"]{
  padding:8px 12px;border-radius:8px;border:1.5px solid var(--border);
  font-family:inherit;font-size:.85rem;
  background:var(--card);color:var(--text);
  transition:border-color .2s;cursor:pointer;
}
.control-group select:focus,
.control-group input[type="color"]:focus{
  outline:none;border-color:var(--accent);
}
input[type="color"]{
  width:44px;height:36px;padding:2px;cursor:pointer;
}

/* Background removal toggle */
.toggle-row{
  display:flex;align-items:center;gap:10px;
  padding:12px 16px;border-radius:10px;
  background:rgba(74,124,111,.06);margin-bottom:16px;
}
.toggle-row .toggle-label{font-size:.85rem;font-weight:500;flex:1}
.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);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 3px rgba(0,0,0,.2);
}
.switch input:checked+.slider{background:var(--accent)}
.switch input:checked+.slider::before{transform:translateX(22px)}

/* Editor modal */
.editor-overlay{
  position:fixed;inset:0;z-index:100;
  background:rgba(0,0,0,.6);backdrop-filter:blur(4px);
  display:none;align-items:center;justify-content:center;
  padding:20px;
}
.editor-overlay.show{display:flex}
.editor-panel{
  background:var(--card);border-radius:20px;
  max-width:500px;width:100%;max-height:90vh;
  overflow-y:auto;padding:24px;
  box-shadow:0 20px 60px rgba(0,0,0,.3);
}
.editor-panel h3{
  font-family:'M PLUS Rounded 1c',sans-serif;
  font-weight:700;font-size:1.1rem;margin-bottom:16px;
  display:flex;align-items:center;gap:8px;
}
.editor-canvas-wrap{
  width:100%;aspect-ratio:7/9;
  background:var(--photo-bg);border-radius:12px;
  position:relative;overflow:hidden;cursor:grab;
  margin-bottom:16px;border:2px solid var(--border);
}
.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}
.slider-group{display:flex;align-items:center;gap:10px}
.slider-group label{font-size:.8rem;color:var(--text-sub);min-width:52px;font-weight:500}
.slider-group input[type="range"]{
  flex:1;height:4px;-webkit-appearance:none;
  background:var(--border);border-radius:2px;outline:none;
}
.slider-group input[type="range"]::-webkit-slider-thumb{
  -webkit-appearance:none;width:18px;height:18px;
  border-radius:50%;background:var(--accent);cursor:pointer;
  box-shadow:0 1px 4px rgba(0,0,0,.2);
}
.editor-btns{display:flex;gap:10px;margin-top:8px}

/* 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;
}
.btn-primary{
  background:var(--accent);color:#fff;
  box-shadow:0 4px 12px rgba(74,124,111,.25);
}
.btn-primary:hover{transform:translateY(-1px);box-shadow:0 6px 16px rgba(74,124,111,.35)}
.btn-primary:disabled{opacity:.4;pointer-events:none}
.btn-secondary{
  background:var(--bg);color:var(--text);
  border:1.5px solid var(--border);
}
.btn-secondary:hover{border-color:var(--accent);color:var(--accent)}
.btn-accent{
  background:var(--accent2);color:#fff;
  box-shadow:0 4px 12px rgba(196,125,90,.25);
}
.btn-accent:hover{transform:translateY(-1px)}
.btn-twitter{
  background:#1da1f2;color:#fff;
  box-shadow:0 4px 12px rgba(29,161,242,.25);
}
.btn-twitter:hover{transform:translateY(-1px)}
.btn-lg{padding:14px 28px;font-size:1rem;border-radius:12px}
.btn-block{width:100%;justify-content:center}

/* Preview */
.preview-area{
  background:var(--photo-bg);border-radius:12px;
  padding:16px;margin-bottom:16px;
  display:flex;align-items:center;justify-content:center;
}

/* Result */
.result-area{text-align:center}
.result-area canvas{
  max-width:100%;border-radius:8px;
  box-shadow:0 4px 20px rgba(0,0,0,.15);
}
.result-actions{
  display:flex;gap:10px;justify-content:center;
  flex-wrap:wrap;margin-top:20px;
}

/* Progress */
.progress-bar{
  width:100%;height:4px;border-radius:2px;
  background:var(--border);overflow:hidden;
  margin-top:12px;display:none;
}
.progress-bar.active{display:block}
.progress-bar .fill{
  height:100%;background:var(--accent);
  border-radius:2px;transition:width .3s;width:0;
}

/* Loading spinner */
.spinner{
  width:20px;height:20px;border:2.5px solid rgba(255,255,255,.3);
  border-top-color:#fff;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:#fff;
  padding:12px 24px;border-radius:12px;font-size:.85rem;
  font-weight:500;z-index:200;transition:transform .4s ease;
  box-shadow:0 8px 24px rgba(0,0,0,.2);
}
.toast.show{transform:translateX(-50%) translateY(0)}

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

/* Inspiration */
.inspiration{
  text-align:center;margin-bottom:8px;
}
.inspiration .inspo-label{
  font-size:.8rem;color:var(--text-sub);margin-bottom:12px;
  display:flex;align-items:center;justify-content:center;gap:6px;
}
.inspiration .inspo-label::before,
.inspiration .inspo-label::after{
  content:'';display:block;width:32px;height:1px;background:var(--border);
}

/* Tweet card (static) */
.tweet-card{
  max-width:500px;margin:0 auto;
  background:var(--card);border:1px solid var(--border);
  border-radius:16px;padding:20px 24px;
  text-align:left;box-shadow:var(--shadow);
  text-decoration:none;color:inherit;
  display:block;transition:box-shadow .2s;
}
.tweet-card:hover{box-shadow:0 4px 24px rgba(45,42,38,.14)}
.tweet-card-header{
  display:flex;align-items:center;gap:10px;margin-bottom:12px;
}
.tweet-card-avatar{
  width:40px;height:40px;border-radius:50%;
  background:linear-gradient(135deg,var(--accent),var(--accent3));
  display:flex;align-items:center;justify-content:center;
  font-size:1.1rem;flex-shrink:0;
}
.tweet-card-name{font-weight:700;font-size:.9rem;line-height:1.3}
.tweet-card-handle{font-size:.8rem;color:var(--text-sub)}
.tweet-card-logo{margin-left:auto;font-size:1.2rem;color:#1da1f2}
.tweet-card-body{font-size:.9rem;line-height:1.7;color:var(--text);margin-bottom:12px}
.tweet-card-footer{font-size:.75rem;color:var(--text-sub)}

/* Footer */
footer{
  text-align:center;padding:32px 0 16px;
  color:var(--text-sub);font-size:.8rem;
}
footer a{color:var(--accent);text-decoration:none}
footer a:hover{text-decoration:underline}

/* License */
.license-section{
  margin-top:12px;padding-top:12px;
  border-top:1px solid var(--border);
  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:rgba(240,236,228,.6);
  padding:12px 16px;border-radius:8px;
  max-width:600px;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 20px}
  header::before{font-size:36px}
  .section{padding:18px 14px}
  .section-title{font-size:1rem}
  .upload-grid{gap:8px}
  .controls-row{gap:8px}
  .control-group select,
  .control-group input[type="color"]{font-size:.8rem;padding:6px 10px}
  .editor-panel{padding:20px 16px}
  .editor-canvas-wrap{aspect-ratio:7/9;max-height:60vw}
  .result-actions{flex-direction:column}
  .result-actions .btn{width:100%;justify-content:center}
  .tweet-card{padding:16px}
  .steps{margin:20px 0 16px}
}

@media(max-width:400px){
  .upload-grid{grid-template-columns:repeat(2,1fr);gap:6px}
  .btn-lg{padding:12px 20px;font-size:.9rem}
  .section{padding:14px 12px}
  .controls-row{flex-direction:column;align-items:stretch}
  .control-group{flex-direction:row;align-items:center;justify-content:space-between}
  .control-group label{min-width:60px}
}