@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700&display=swap');

:root {
  --bg-color: #f8f9ff;
  --surface-low: #eff4ff;
  --surface-container: #e5eeff;
  --glass-bg: #ffffff;
  --glass-border: #c6c6cd;
  --text-main: #45464d;
  --text-dark: #0b1c30;
  --text-dim: #76777d;
  --primary: #000000;
  --secondary: #b12c22;
  --secondary-hover: #8e120d;
  --success: #1e7e34;
  --error: #ba1a1a;
  --error-container: #ffdad6;
  --outline-variant: #c6c6cd;
  --radius: 0.5rem;
  --radius-md: 0.75rem;
  --radius-lg: 1rem;
  --radius-xl: 1.5rem;
  --font-family: 'Inter', sans-serif;
  --shadow-sm: 0 2px 8px rgba(11,28,48,0.06);
  --shadow-md: 0 4px 20px rgba(11,28,48,0.09);
  --shadow-lg: 0 10px 40px rgba(11,28,48,0.13);
}

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

body{font-family:var(--font-family);background:var(--bg-color);color:var(--text-main);min-height:100vh;display:flex;align-items:center;justify-content:center;line-height:1.6}

h1,h2,h3,h4{font-family:var(--font-family);color:var(--text-dark);font-weight:700;letter-spacing:-0.01em}

#app{width:100%;height:100%;display:flex;justify-content:center;align-items:flex-start;padding-top:2rem}

.screen{display:none;width:100%;max-width:1200px;padding:0 2rem 2rem 2rem}
.screen.active{display:block;animation:fadeIn .4s ease-out}

@keyframes fadeIn{from{opacity:0;transform:translateY(12px)}to{opacity:1;transform:translateY(0)}}

.glass-panel{background:var(--glass-bg);border:1px solid var(--outline-variant);border-radius:var(--radius-lg);padding:2rem;box-shadow:var(--shadow-sm)}

/* LOGIN */
.login-card{max-width:420px;margin:10vh auto 0;text-align:center;border-radius:var(--radius-xl);box-shadow:var(--shadow-md)}

.logo{margin-bottom:2rem;color:var(--text-dark)}
.logo-mark{display:inline-flex;align-items:center;justify-content:center;width:56px;height:56px;background:var(--primary);border-radius:var(--radius-md);margin-bottom:1rem}
.logo-mark svg{color:#fff}
.logo h1{font-size:2rem;font-weight:700;letter-spacing:-0.02em;color:var(--text-dark)}
.logo-tagline{font-size:.875rem;color:var(--text-dim);margin-top:.25rem}

form input{width:100%;padding:12px 16px;margin-bottom:1rem;background:var(--surface-low);border:1px solid var(--outline-variant);border-radius:var(--radius);color:var(--text-dark);font-size:1rem;font-family:var(--font-family);transition:border-color .2s,box-shadow .2s}
form input:focus{outline:none;border-color:var(--primary);box-shadow:0 0 0 3px rgba(0,0,0,.08)}

form button,.btn-primary{width:100%;padding:12px;background:var(--secondary);color:#fff;border:none;border-radius:var(--radius);font-weight:600;font-family:var(--font-family);font-size:1rem;cursor:pointer;transition:background .2s,transform .1s,box-shadow .2s;letter-spacing:-.01em}
form button:hover,.btn-primary:hover:not(:disabled){background:var(--secondary-hover);transform:translateY(-1px);box-shadow:0 4px 14px rgba(177,44,34,.3)}
.btn-primary:disabled{opacity:.45;cursor:not-allowed}
.error-msg{color:var(--error);font-size:.875rem;min-height:1.5rem;margin-top:.5rem}

/* DASHBOARD HEADER */
.header{display:flex;justify-content:space-between;align-items:center;padding:1rem 1.5rem;margin-bottom:2rem;border-radius:var(--radius-lg)}
.logo-small{display:flex;align-items:center;gap:.75rem}
.logo-small-mark{display:inline-flex;align-items:center;justify-content:center;width:32px;height:32px;background:var(--primary);border-radius:.25rem;flex-shrink:0}
.logo-small-mark svg{color:#fff}
.header h1{font-size:1.25rem;font-weight:700;letter-spacing:-.02em;color:var(--text-dark);margin:0;border-bottom:none;padding-bottom:0}
.user-info{display:flex;align-items:center;gap:.75rem}
.user-stack{display:flex;flex-direction:column;align-items:center;gap:4px}
#user-badge{font-size:.8rem;color:var(--text-dim);font-weight:500}
.header-btn{margin-top:0!important}
.btn-secondary{background:transparent;border:1px solid var(--outline-variant);color:var(--text-main);padding:5px 14px;border-radius:var(--radius);cursor:pointer;transition:background .2s,border-color .2s;font-family:var(--font-family);font-size:.85rem;font-weight:500}
.btn-secondary:hover{background:var(--surface-container);border-color:#76777d}

.dashboard-grid{display:grid;grid-template-columns:2fr 1fr;gap:1.5rem;align-items:start}

.main-panel h2,.sidebar-panel h2{font-size:1rem;font-weight:600;margin-bottom:1.5rem;margin-top:0;letter-spacing:-.01em;background:var(--surface-low);border-left:3px solid var(--secondary);padding:10px 16px;border-radius:0 var(--radius) var(--radius) 0;display:flex;justify-content:space-between;align-items:center;color:var(--text-dark)}

/* DROP ZONE */
.drop-zone{border:2px dashed var(--outline-variant);border-radius:var(--radius-lg);padding:3rem 1rem;text-align:center;transition:all .25s ease;background:var(--surface-low);margin-bottom:2rem}
.drop-zone.dragover{border-color:var(--secondary);background:#fff0ef;transform:scale(1.01);box-shadow:0 0 0 4px rgba(177,44,34,.08)}
.drop-zone svg{color:var(--text-dim);margin-bottom:1rem}
.drop-zone p{color:var(--text-dim);margin-bottom:.5rem;font-size:.95rem}
.or-text{font-size:.85rem;color:var(--text-dim);margin:0 1rem}
.btn-outline{font-family:var(--font-family);font-weight:600;background:transparent;border:1px solid var(--primary);color:var(--primary);padding:8px 20px;border-radius:var(--radius);cursor:pointer;transition:background .2s,color .2s;margin-top:1rem;font-size:.9rem}
.btn-outline:hover{background:var(--primary);color:#fff}

.instruction-btn{background:transparent;border:none;font-size:.85rem;color:var(--secondary);text-decoration:underline;cursor:pointer;float:right;font-weight:600;margin-top:2px;font-family:var(--font-family)}
.instruction-btn:hover{color:var(--secondary-hover)}

/* QUEUE */
.queue-list{display:flex;flex-direction:column;gap:.75rem;margin-bottom:2rem}
.glass-card{background:#fff;border:1px solid var(--outline-variant);padding:1rem;border-radius:var(--radius-md);box-shadow:var(--shadow-sm);transition:box-shadow .2s}
.glass-card:hover{box-shadow:var(--shadow-md)}
.queue-info,.history-info{display:flex;justify-content:space-between;align-items:center;margin-bottom:.5rem}
.queue-filename{font-weight:600;font-size:.95rem;color:var(--text-dark);letter-spacing:-.01em}
.queue-status{font-size:.85rem;color:var(--text-dim);font-weight:500}
.queue-status.completed{color:var(--success)}
.queue-status.error{color:var(--error)}
.queue-details{font-size:.85rem;color:var(--text-main);margin-top:.5rem;display:flex;justify-content:space-between}
.queue-timer{font-weight:600;color:var(--text-dark)}
.progress-bar-container{width:100%;height:6px;background:var(--surface-container);border-radius:3px;overflow:hidden;margin-top:8px}
.progress-bar{height:100%;width:0%;background:var(--secondary);transition:width .4s ease;border-radius:3px}
.download-link{display:inline-block;margin-top:.75rem;color:var(--success);text-decoration:none;font-size:.9rem;font-weight:600;transition:opacity .2s}
.download-link:hover{opacity:.75;text-decoration:underline}
.hidden{display:none!important}

/* HISTORY */
.sidebar-panel{position:relative}
.history-controls{display:flex;justify-content:space-between;align-items:center;margin-bottom:1rem}
.history-filters{display:flex;gap:.4rem}
.filter-btn{background:transparent;border:1px solid var(--outline-variant);color:var(--text-main);padding:4px 10px;border-radius:.25rem;cursor:pointer;font-size:.8rem;font-family:var(--font-family);font-weight:500;transition:all .2s}
.filter-btn.active{background:var(--primary);border-color:var(--primary);color:#fff;font-weight:600}
.clear-history-btn{background:transparent;border:none;color:var(--error);cursor:pointer;font-size:.8rem;text-decoration:underline;font-family:var(--font-family)}
.history-list{display:flex;flex-direction:column;gap:.6rem;max-height:500px;overflow-y:auto;padding-right:4px}
.history-list::-webkit-scrollbar{width:5px}
.history-list::-webkit-scrollbar-thumb{background:var(--outline-variant);border-radius:3px}
.history-item{padding:.75rem 1rem;cursor:pointer;transition:background .2s;border-radius:var(--radius)}
.history-item:hover{background:var(--surface-low)}
.history-filename{font-size:.9rem;display:block;margin-bottom:.25rem;word-break:break-all;font-weight:600;color:var(--text-dark)}
.history-date{font-size:.75rem;color:var(--text-dim)}
.history-actions{display:flex;justify-content:space-between;align-items:flex-start;flex-wrap:wrap;gap:6px;margin-top:.5rem}
.history-status{font-size:.8rem;font-weight:600;color:var(--text-dim)}
.history-status.completed{color:var(--success)}
.history-status.error{color:var(--error)}
.history-actions .download-link{margin-top:0;font-size:.85rem}

/* REPORT */
.history-report{margin-top:10px;padding-top:10px;border-top:1px dashed var(--outline-variant);font-size:.85rem;display:none;cursor:default}
.history-item.expanded .history-report,.history-item.awaiting .history-report{display:block;animation:fadeIn .3s}
.report-grid{display:grid;grid-template-columns:1fr 1fr;gap:8px;margin-bottom:10px}
.report-stat{background:var(--surface-low);padding:6px;border-radius:.25rem}
.report-stat-label{font-size:.75rem;color:var(--text-dim);display:block}
.report-stat-val{font-weight:600;color:var(--text-dark);font-size:.9rem}
.report-system{margin-top:8px}
.report-warnings{margin-top:8px;color:var(--error);background:var(--error-container);padding:6px;border-left:3px solid var(--error);border-radius:.25rem}
.report-tokens{margin-top:8px;font-size:.75rem;color:var(--text-dim);text-align:right}

/* MODAL */
.modal-overlay{position:fixed;top:0;left:0;width:100%;height:100%;background:rgba(11,28,48,.45);backdrop-filter:blur(6px);display:flex;align-items:center;justify-content:center;z-index:1000;opacity:0;pointer-events:none;transition:.3s}
.modal-overlay.active{opacity:1;pointer-events:all}
.modal-content{background:#fff;width:90%;max-width:600px;border-radius:var(--radius-xl);padding:2rem;position:relative;box-shadow:var(--shadow-lg);transform:translateY(20px);transition:.3s;max-height:90vh;overflow-y:auto}
.modal-overlay.active .modal-content{transform:translateY(0)}
.modal-close{position:absolute;top:1.5rem;right:1.5rem;background:none;border:none;font-size:1.5rem;cursor:pointer;color:var(--text-dim);line-height:1;transition:color .2s}
.modal-close:hover{color:var(--text-dark)}
.modal-content h2{border-left:none;background:transparent;padding:0;margin-top:0;letter-spacing:-.015em}
.modal-content ul{list-style-type:none;padding-left:0}
.modal-content ul li{padding-left:1.5em;position:relative;margin-bottom:12px}
.modal-content ul li::before{content:"▪";color:var(--secondary);position:absolute;left:0;top:2px;font-size:.85em}
.modal-content p,.modal-content li{font-size:.95rem}

/* MEDIA */
@media(max-width:900px){.dashboard-grid{grid-template-columns:1fr}.header{padding:1rem;flex-direction:column;gap:1rem;align-items:flex-start}.user-info{flex-wrap:wrap;width:100%;justify-content:space-between}}
@media(max-width:500px){.report-grid{grid-template-columns:1fr}.history-actions{flex-direction:column;align-items:flex-start;gap:8px}}

.progress-bar.error{background:var(--error)}
.queue-item.error{border-color:rgba(186,26,26,.25)}
.queue-status.warning{color:#c47a00}
.history-status.warning{color:#c47a00}

/* CEILING CHOICE */
.ceiling-choice{margin-top:.75rem;padding:.75rem;background:var(--surface-low);border:1px solid var(--outline-variant);border-radius:var(--radius)}
.ceiling-choice-msg{font-size:.88rem;color:var(--text-dark);margin-bottom:.6rem;line-height:1.5}
.ceiling-choice-btns{display:flex;gap:.5rem;flex-wrap:wrap}
.ceiling-btn{flex:1;min-width:120px;padding:8px 14px;background:var(--secondary);border:none;border-radius:var(--radius);font-family:var(--font-family);font-size:.9rem;font-weight:600;color:#fff;cursor:pointer;transition:background .2s,transform .1s}
.ceiling-btn:hover:not(:disabled){background:var(--secondary-hover);transform:translateY(-1px)}
.ceiling-btn:disabled{opacity:.45;cursor:not-allowed}