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

    :root {
      --bg: #f3f4f6;
      --bg-elevated: #f9fafb;
      --card: #ffffff;
      --card-hover: #f9fafb;
      --border: #e5e7eb;
      --border-focus: #d97706;
      --fg: #111827;
      --fg-muted: #6b7280;
      --fg-dim: #9ca3af;
      --accent: #d97706;
      --accent-soft: rgba(217, 119, 6, 0.08);
      --success: #059669;
      --success-soft: rgba(5, 150, 105, 0.1);
      --error: #dc2626;
      --error-soft: rgba(220, 38, 38, 0.08);
      --info: #2563eb;
      --warning-color: #d97706;
      --radius: 14px;
      --radius-sm: 8px;
      --shadow: 0 4px 24px rgba(0,0,0,0.06);
      --font: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    }

    html { font-size: 16px; }

    body {
      font-family: var(--font);
      background: #E4E4DC;
      color: var(--fg);
      min-height: 100vh;
      overflow-x: hidden;
      position: relative;
    }

    .bg-glow {
      position: fixed; border-radius: 50%; filter: blur(120px);
      pointer-events: none; z-index: 0; opacity: 0.6;
    }
    .bg-glow--1 {
      width: 500px; height: 500px; top: -120px; right: -100px;
      background: radial-gradient(circle, rgba(217,119,6,0.1), transparent 70%);
      animation: glowDrift1 18s ease-in-out infinite alternate;
    }
    .bg-glow--2 {
      width: 400px; height: 400px; bottom: -80px; left: -80px;
      background: radial-gradient(circle, rgba(5,150,105,0.08), transparent 70%);
      animation: glowDrift2 22s ease-in-out infinite alternate;
    }
    @keyframes glowDrift1 { 0% { transform: translate(0, 0); } 100% { transform: translate(-60px, 40px); } }
    @keyframes glowDrift2 { 0% { transform: translate(0, 0); } 100% { transform: translate(50px, -30px); } }

    body::before {
      content: ''; position: fixed; inset: 0;
      background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='0.02'/%3E%3C/svg%3E");
      pointer-events: none; z-index: 0;
    }

    /* Fixed Header */
    .app-header {
      position: fixed;
      top: 0;
      left: 0;
      right: 0;
      height: 64px;
      background: #EDEDE8;
      backdrop-filter: blur(12px);
      display: flex;
      align-items: center;
      justify-content: space-between;
      padding: 0 24px;
      z-index: 100;
    }
    .app-header__logo {
      display: flex; align-items: center; gap: 10px; font-weight: 700;
      font-size: 1.15rem; color: var(--fg); letter-spacing: -0.02em;
    }
    .app-header__logo img.logo {height: 28px;color: var(--accent);position: relative;top: -2px;}
    .app-header__stats {
      display: flex; align-items: center; gap: 8px; font-size: 0.9rem;
      font-weight: 500; color: var(--fg-muted);
    }
    .app-header__stats svg { width: 18px; height: 18px; color: var(--success); }
    .app-header__stats span { font-weight: 700; color: var(--success); }

    /* Fixed Footer */
    .app-footer {
      position: fixed;
      bottom: 0;
      left: 0;
      right: 0;
      height: 72px;
      background: #EDEDE8;
      backdrop-filter: blur(12px);
      display: flex;
      align-items: center;
      justify-content: space-between;
      padding: 0 24px;
      z-index: 100;
    }
    .app-footer__info {
      display: flex; align-items: center; gap: 8px; font-size: 0.9rem;
      color: var(--fg-muted); font-weight: 500;
    }
    .app-footer__info svg { width: 18px; height: 18px; color: var(--fg-dim); }
    .app-footer__info strong { color: var(--fg); font-weight: 700; margin: 0 2px; }
    .app-footer__actions { display: flex; gap: 12px; }

    /* Main Container & Workspace */
    .app-container {
      position: relative; z-index: 1; max-width: 1200px;
      margin: 0 auto; padding: 94px 24px 100px;
    }

    .page-header {margin-bottom: 24px;animation: fadeSlideUp 0.6s ease-out;text-align: center;}
    .page-header__title {
      font-size: 21px;
      font-weight: 700;
      letter-spacing: -0.03em;
      line-height: 1.15;
      margin-bottom: 8px;
    }
    .page-header__title span {
      background: #B58150;
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
      background-clip: text;
    }
    .page-header__desc {color: var(--fg-muted);font-size: 16px;line-height: 1.6;width: 100%;padding: 0px 50px;}
     .page-header__desc b{font-weight:500; color:#666}
    .workspace {
      display: grid;
      grid-template-columns: 480px 1fr;
      gap: 10px;
      animation: fadeSlideUp 0.5s ease-out;
      min-height: calc(100vh - 260px);
    }

    /* Left Column: Upload Zone */
    .workspace__left { display: flex; flex-direction: column; }
    
    .upload-zone {
      position: relative; border: 2px dashed var(--border); border-radius: var(--radius);
      padding: 40px 24px; text-align: center; cursor: pointer; transition: all 0.35s ease;
      background: var(--card); overflow: hidden; box-shadow: var(--shadow); height: 100%;
      display: flex; flex-direction: column; align-items: center; justify-content: center;
    }
    .upload-zone::before {
      content: ''; position: fixed; inset: 0;
      background: radial-gradient(ellipse at center, var(--accent-soft), transparent 70%);
      opacity: 0; transition: opacity 0.4s; pointer-events: none;
    }
    .upload-zone:hover, .upload-zone--dragover {
      border-color: #B58150;
      transform: translateY(-2px);
      box-shadow: 0 8px 40px rgba(217,119,6,0.1);
    }
    .upload-zone:hover::before, .upload-zone--dragover::before { opacity: 1; }
    .upload-zone--dragover { border-style: solid; }
    .upload-zone__icon {
      width: 56px;
      height: 56px;
      margin: 0 auto 12px;
      background: rgb(237 237 232);
      border-radius: 50%;
      display: flex;
      align-items: center;
      justify-content: center;
      color: #B58150;
      transition: transform 0.4s cubic-bezier(0.34, 1.56, 0.64, 1);
      position: relative;
      z-index: 1;
    }
    .upload-zone__icon svg { width: 24px; height: 24px; }
    .upload-zone:hover .upload-zone__icon, .upload-zone--dragover .upload-zone__icon { transform: scale(1.1) translateY(-4px); }
    .upload-zone__title { font-size: 1rem; font-weight: 600; margin-bottom: 4px; position: relative; z-index: 1; color: var(--fg); }
    .upload-zone__title span {color: #B58150;text-decoration: underline;text-underline-offset: 3px;}
    .upload-zone__hint { color: var(--fg-muted); font-size: 0.8rem; position: relative; z-index: 1; }
    .upload-zone__input { display: none; }

    /* Right Column: Live Preview Card */
    .preview-card {
      background: var(--card);
      border: 1px solid var(--border);
      border-radius: var(--radius);
      box-shadow: var(--shadow);
      display: flex;
      flex-direction: column;
      overflow: hidden;
    }
    .preview-card__header {
      padding: 10px 16px;
      border-bottom: 1px solid var(--border);
      font-weight: 600;
      font-size: 0.9rem;
      color: var(--fg-muted);
      display: flex;
      align-items: center;
      justify-content: space-between;
      background: var(--bg-elevated);
    }
    .preview-card__header-left {display: flex;align-items: center;gap: 8px;color: #222;font-weight: 600;font-size: 15px;}
    .preview-card__header-left svg {width: 19px;height: 19px;color: #B58150;}
    
    .preview-card__header-right {
      display: flex; align-items: center; gap: 16px;
      opacity: 0; transform: translateX(10px); transition: all 0.3s; pointer-events: none;
    }
    .preview-card__header-right--visible { opacity: 1; transform: translateX(0); pointer-events: auto; }
    
    .preview-card__filename {
      font-size: 0.85rem; color: var(--fg-dim); font-weight: 500; 
      white-space: nowrap; overflow: hidden; text-overflow: ellipsis; max-width: 150px;
    }

    .preview-card__remove {
      display: flex;
      align-items: center;
      gap: 6px;
      padding: 6px 12px;
      border-radius: 8px;
      border: 1px solid transparent;
      background: transparent;
      color: #bd5050;
      font-family: var(--font);
      font-size: 0.8rem;
      font-weight: 600;
      cursor: pointer;
      transition: all 0.2s;
    }
    .preview-card__remove svg { width: 16px; height: 16px; }
    .preview-card__remove:hover { border-color: var(--error); color: var(--error); background: var(--error-soft); }

    .preview-card__content {
      flex: 1;
      background: #fff;
      position: relative;
      overflow: hidden;
      display: flex;
      align-items: center;
      justify-content: center;
      min-height: 25vh;
    }
    .preview-renderer {width: 100%;height: 100%;border: none;position: absolute;inset: 0;}
    .preview-image {width: 15vh;height: 100%;object-fit: contain;}
    .preview-fallback {
      display: flex; flex-direction: column; align-items: center; justify-content: center;
      color: var(--fg-dim); text-align: center; padding: 24px;
    }
    .preview-fallback svg { width: 48px; height: 48px; margin-bottom: 16px; opacity: 0.4; }
    .preview-fallback p { font-size: 0.95rem; margin-bottom: 4px; }
    .preview-fallback small { font-size: 0.8rem; color: var(--fg-dim); }

    /* Progress Bar inside Preview Card */
    .preview-card__progress {
      padding: 10px 16px;
      border-top: 1px solid var(--border);
      background: var(--bg-elevated);
      display: flex;
      align-items: center;
      gap: 16px;
      opacity: 0;
      transform: translateY(10px);
      transition: all 0.3s;
      pointer-events: none;
    }
    .preview-card__progress--visible { opacity: 1; transform: translateY(0); pointer-events: auto; }
    .preview-card__progress-status { font-size: 0.85rem; font-weight: 600; white-space: nowrap; display: flex; align-items: center; gap: 6px; min-width: 110px; }
    .preview-card__progress-status svg { width: 16px; height: 16px; }
    .preview-card__progress-status--uploading { color: var(--accent); }
    .preview-card__progress-status--complete { color: var(--success); }
    .preview-card__progress-status--error { color: var(--error); }
    .preview-card__progress-bar { flex: 1; height: 8px; background: var(--border); border-radius: 4px; overflow: hidden; }
    .preview-card__progress-fill { height: 100%; background: var(--accent); border-radius: 4px; width: 0%; transition: width 0.3s ease; }
    .preview-card__progress-status--complete .preview-card__progress-fill { background: var(--success); width: 100%; }

    /* Buttons */
    .btn {
      padding: 10px 24px; border-radius: 10px; font-family: var(--font); font-size: 0.9rem;
      font-weight: 600; border: none; cursor: pointer; transition: all 0.25s;
      display: inline-flex; align-items: center; gap: 8px;
    }
    .btn svg { width: 18px; height: 18px; }
    .btn--primary {
      background: #B58150;
      color: #fff;
      box-shadow: 0 4px 20px rgb(181 129 80 / 25%);
    }
    .btn--primary:hover { transform: translateY(-2px); box-shadow: 0 8px 30px rgba(217,119,6,0.35); }
    .btn--primary:active { transform: translateY(0); }
    .btn--primary:disabled { opacity: 0.4; cursor: not-allowed; transform: none; box-shadow: none; }
    .btn--ghost { background: var(--card); color: var(--fg-muted); border: 1px solid var(--border); box-shadow: var(--shadow); }
    .btn--ghost:hover { border-color: var(--fg-dim); color: var(--fg); }

    /* Success/Completion Modal */
    .completion-overlay {
      position: fixed; inset: 0; z-index: 10000; background: rgba(0,0,0,0.5);
      backdrop-filter: blur(8px); display: flex; align-items: center; justify-content: center;
      padding: 24px; opacity: 0; transition: opacity 0.3s ease;
    }
    .completion-overlay--visible { opacity: 1; }
    .completion-modal {
      background: var(--card); border-radius: 20px; padding: 48px 40px; text-align: center;
      max-width: 420px; width: 100%; box-shadow: 0 20px 60px rgba(0,0,0,0.15);
      transform: scale(0.9) translateY(20px); transition: transform 0.4s cubic-bezier(0.34, 1.56, 0.64, 1);
    }
    .completion-overlay--visible .completion-modal { transform: scale(1) translateY(0); }
    .completion-modal__icon {
      width: 80px; height: 80px; margin: 0 auto 24px; border-radius: 50%;
      display: flex; align-items: center; justify-content: center;
    }
    .completion-modal__icon svg { width: 40px; height: 40px; }
    .completion-modal__icon--success { background: var(--success-soft); color: var(--success); }
    .completion-modal__icon--warning { background: var(--accent-soft); color: var(--warning-color); }
    .completion-modal h2 { font-size: 1.5rem; margin-bottom: 8px; color: var(--fg); font-weight: 700; }
    .completion-modal p { color: var(--fg-muted); font-size: 1rem; margin-bottom: 32px; line-height: 1.5; }
    .completion-modal__btn { width: 100%; justify-content: center; padding: 14px 24px; font-size: 1rem; }

    .toast-container {
      position: fixed; top: 74px; right: 24px; z-index: 9999; display: flex;
      flex-direction: column; gap: 10px; pointer-events: none;
    }
    .toast {
      pointer-events: auto; padding: 14px 20px; border-radius: 10px; font-size: 0.85rem;
      font-weight: 500; display: flex; align-items: center; gap: 10px; min-width: 280px;
      max-width: 400px; box-shadow: 0 8px 30px rgba(0,0,0,0.1); animation: toastIn 0.4s cubic-bezier(0.34, 1.56, 0.64, 1);
    }
    .toast svg { width: 18px; height: 18px; flex-shrink: 0; }
    .toast--success { background: #f0fdf4; border: 1px solid rgba(5,150,105,0.2); color: #065f46; }
    .toast--error { background: #fef2f2; border: 1px solid rgba(220,38,38,0.2); color: #991b1b; }
    .toast--info { background: #eff6ff; border: 1px solid rgba(37,99,235,0.2); color: #1e3a8a; }
    .toast--exit { animation: toastOut 0.3s ease-in forwards; }

    @keyframes fadeSlideUp { from { opacity: 0; transform: translateY(20px); } to { opacity: 1; transform: translateY(0); } }
    @keyframes toastIn { from { opacity: 0; transform: translateX(40px) scale(0.95); } to { opacity: 1; transform: translateX(0) scale(1); } }
    @keyframes toastOut { from { opacity: 1; transform: translateX(0); } to { opacity: 0; transform: translateX(60px); } }
    @keyframes spin { to { transform: rotate(360deg); } }
    .spin { animation: spin 1s linear infinite; }

    @media (max-width: 900px) {
      .workspace {grid-template-columns: 1fr;height: auto;}
      .upload-zone { height: auto; padding: 32px 20px; }
      .app-header { padding: 0 16px; }
      .app-footer { flex-direction: column; height: auto; padding: 12px 16px; gap: 12px; }
      .app-footer__info { width: 100%; justify-content: center; }
      .app-footer__actions { width: 100%; justify-content: center; }
      .app-container {padding: 85px 16px 120px 16px;}
      .preview-card__content {height: 25vh;}
      .preview-card__filename { max-width: 100px; }
      .page-header__desc{padding: 0px;font-size: 14px;line-height: 18px;}
      .page-header {margin-bottom: 18px;}
    }

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

    ::-webkit-scrollbar { width: 6px; }
    ::-webkit-scrollbar-track { background: transparent; }
    ::-webkit-scrollbar-thumb { background: var(--border); border-radius: 4px; }
    ::-webkit-scrollbar-thumb:hover { background: var(--fg-dim); }