/* === Reset & Base === */
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
:root{--bg:#0f172a;--bg-card:#1e293b;--bg-input:#0f172a;--border:#334155;--border-focus:#3b82f6;--text:#e2e8f0;--text-muted:#94a3b8;--text-dim:#64748b;--primary:#3b82f6;--primary-hover:#2563eb;--secondary:#475569;--secondary-hover:#64748b;--success:#22c55e;--error:#ef4444;--warning:#f59e0b;--radius:12px;--radius-sm:8px;--radius-xs:6px;--font-mono:'SF Mono','Fira Code','Cascadia Code','JetBrains Mono',monospace;--font-ui:-apple-system,BlinkMacSystemFont,'Segoe UI',Roboto,sans-serif}
html{font-size:15px}
body{font-family:var(--font-ui);background:var(--bg);color:var(--text);min-height:100vh;line-height:1.6}
.container{max-width:960px;margin:0 auto;padding:0 20px}

/* Header */
.header{border-bottom:1px solid var(--border);padding:20px 0;background:linear-gradient(135deg,#0f172a 0%,#1a2a4a 100%)}
.header-inner{display:flex;align-items:baseline;gap:16px;flex-wrap:wrap}
.logo{font-size:1.5rem;font-weight:700;color:var(--text);letter-spacing:-.5px}
.tagline{color:var(--text-muted);font-size:.9rem}

/* Card */
.card{margin-top:24px;background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius);overflow:hidden}

/* Upload */
.upload-section{padding:24px}
.drop-zone{border:2px dashed var(--border);border-radius:var(--radius-sm);padding:50px 20px;text-align:center;cursor:pointer;transition:all .2s;position:relative}
.drop-zone:hover,.drop-zone.dragover{border-color:var(--primary);background:rgba(59,130,246,.05)}
.drop-content{pointer-events:none}
.drop-icon{font-size:3rem;display:block;margin-bottom:8px}
.drop-zone p{color:var(--text-muted);font-size:.9rem}
.drop-hint{font-size:.78rem!important;color:var(--text-dim)!important;margin-top:4px}
.file-input{position:absolute;inset:0;opacity:0;cursor:pointer}

/* Result area */
.result-area{padding:0 24px 24px;display:flex;flex-direction:column;gap:16px}

/* Preview row */
.preview-row{display:flex;gap:16px;min-height:300px}
@media(max-width:700px){.preview-row{flex-direction:column}}
.preview-col{flex:1;display:flex;flex-direction:column;gap:8px}
.preview-col h3,.info-col h3{font-size:.82rem;color:var(--text-muted);text-transform:uppercase;letter-spacing:.5px;font-weight:600}

.image-preview{
  flex:1;background:var(--bg-input);border:1px solid var(--border);border-radius:var(--radius-sm);
  display:flex;align-items:center;justify-content:center;overflow:hidden;min-height:200px;
  padding:8px;position:relative;
}
.image-preview img{max-width:100%;max-height:320px;border-radius:4px;object-fit:contain}

.file-info-bar{
  padding:8px 12px;background:var(--bg-input);border:1px solid var(--border);border-radius:var(--radius-xs);
  font-size:.78rem;color:var(--text-muted);display:flex;gap:12px;flex-wrap:wrap;
}

.info-col{flex:1;display:flex;flex-direction:column;gap:8px;min-height:200px}

.section-tabs{display:flex;gap:2px;background:var(--bg-input);border-radius:var(--radius-xs);padding:2px;width:fit-content}
.section-tab{padding:6px 14px;border:none;background:transparent;color:var(--text-muted);font-size:.78rem;font-family:var(--font-ui);cursor:pointer;border-radius:4px;transition:all .12s}
.section-tab:hover{color:var(--text)}
.section-tab.active{color:#fff;background:var(--primary)}

.info-content{flex:1;background:var(--bg-input);border:1px solid var(--border);border-radius:var(--radius-sm);padding:12px;overflow-y:auto;max-height:300px}

.exif-list{display:flex;flex-direction:column;gap:4px}
.exif-item{display:flex;justify-content:space-between;padding:5px 8px;border-radius:4px;font-size:.78rem;gap:8px}
.exif-item:nth-child(odd){background:rgba(255,255,255,.02)}
.exif-tag{color:var(--primary);flex:none;white-space:nowrap}
.exif-value{color:var(--text);text-align:right;word-break:break-all}
.exif-warning{color:var(--warning);font-size:.78rem;padding:6px 0}

/* Action area */
.action-area{display:flex;flex-direction:column;gap:8px}
.action-bar{display:flex;align-items:center;gap:12px;flex-wrap:wrap}
.action-note{font-size:.75rem;color:var(--text-dim)}

.strip-result{font-size:.82rem;color:var(--text-muted)}

/* Buttons */
.btn{display:inline-flex;align-items:center;gap:6px;padding:7px 14px;border:none;border-radius:var(--radius-xs);font-size:.82rem;font-family:var(--font-ui);font-weight:500;cursor:pointer;transition:all .15s;white-space:nowrap}
.btn-primary{background:var(--primary);color:#fff}
.btn-primary:hover{background:var(--primary-hover)}
.btn-lg{padding:10px 24px;font-size:.9rem}
.btn-sm{padding:4px 10px;font-size:.76rem;background:var(--secondary);color:#e2e8f0}
.btn-sm:hover{background:var(--secondary-hover)}

.placeholder-text{color:var(--text-dim);font-style:italic}

/* Toast */
.toast{position:fixed;bottom:24px;left:50%;transform:translateX(-50%);padding:10px 24px;border-radius:var(--radius);background:var(--bg-card);border:1px solid var(--border);color:var(--text);font-size:.85rem;box-shadow:0 4px 20px rgba(0,0,0,.3);z-index:100;animation:toastIn .3s ease}
@keyframes toastIn{from{opacity:0;transform:translateX(-50%) translateY(10px)}to{opacity:1;transform:translateX(-50%) translateY(0)}}

.footer{text-align:center;padding:32px 0;margin-top:40px;border-top:1px solid var(--border);color:var(--text-dim);font-size:.82rem}
/* === SEO / GEO Content === */
.language-switcher { margin-left: auto; display: inline-flex; gap: 4px; padding: 3px; border: 1px solid var(--border); border-radius: var(--radius-xs); background: rgba(15,23,42,0.35); }
.language-switcher a { color: var(--text-muted); text-decoration: none; font-size: 0.76rem; line-height: 1; padding: 6px 8px; border-radius: 5px; }
.language-switcher a:hover, .language-switcher a.active { color: #fff; background: var(--primary); }
.seo-content { margin-top: 28px; display: flex; flex-direction: column; gap: 16px; color: var(--text-muted); }
.seo-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 16px; }
.seo-block { background: rgba(255,255,255,0.03); border: 1px solid var(--border); border-radius: var(--radius-sm); padding: 18px; }
.seo-block h2 { color: var(--text); font-size: 1rem; line-height: 1.35; margin: 0 0 10px; letter-spacing: 0; }
.seo-block p { margin: 0; }
.seo-block ul { margin: 0; padding-left: 18px; }
.seo-block li + li { margin-top: 6px; }
.faq-list details { border-top: 1px solid var(--border); padding: 10px 0; }
.faq-list details:first-of-type { border-top: 0; }
.faq-list summary { color: var(--text); cursor: pointer; font-weight: 600; }
.faq-list details p { margin-top: 8px; }
@media (max-width: 720px) { .language-switcher { margin-left: 0; } .seo-grid { grid-template-columns: 1fr; } }