:root {
  --bg-primary: #ffffff;
  --bg-secondary: #f2f2f7;
  --bg-tertiary: #e5e5ea;
  --bg-elevated: #ffffff;
  --text-primary: #1d1d1f;
  --text-secondary: #636366;      
  --text-tertiary: #8e8e93;       
  --accent: #0066cc;              
  --accent-hover: #0055b3;
  --success: #248a3d;             
  --success-bg: rgba(36, 138, 61, 0.12);
  --warning: #b25000;             
  --warning-bg: rgba(178, 80, 0, 0.12);
  --danger: #d70015;              
  --danger-bg: rgba(215, 0, 21, 0.1);
  --info: #5856d6;
  --info-bg: rgba(88, 86, 214, 0.12);
  --border: rgba(0, 0, 0, 0.15);          
  --border-strong: rgba(0, 0, 0, 0.25);   
  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.08), 0 1px 2px rgba(0, 0, 0, 0.12);
  --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.08), 0 2px 4px rgba(0, 0, 0, 0.12);
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 20px;
  --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
  --font-sans: -apple-system, BlinkMacSystemFont, 'SF Pro Display', 'Helvetica Neue', sans-serif;
  --font-mono: 'SF Mono', SFMono-Regular, ui-monospace, monospace;
}

@media (prefers-color-scheme: dark) {
  :root {
    /* Dark Theme - Reduced Harshness */
    --bg-primary: #1c1c1e;         /* Softened from pure #000 */
    --bg-secondary: #2c2c2e;       /* Lifted for better layering */
    --bg-tertiary: #3a3a3c;        /* More visible differentiation */
    --bg-elevated: #2c2c2e;
    --text-primary: #f5f5f7;
    --text-secondary: #c7c7cc;     /* Improved from #a1a1a6 - better contrast */
    --text-tertiary: #98989d;      /* Improved from #6e6e73 - now readable */
    --accent: #409cff;             /* Brighter for dark backgrounds */
    --accent-hover: #64b5ff;
    --success: #32d74b;
    --success-bg: rgba(50, 215, 75, 0.2);
    --warning: #ffd60a;
    --warning-bg: rgba(255, 214, 10, 0.2);
    --danger: #ff453a;
    --danger-bg: rgba(255, 69, 58, 0.2);
    --info: #7d7aff;               /* Brighter purple for dark mode */
    --info-bg: rgba(125, 122, 255, 0.2);
    --border: rgba(255, 255, 255, 0.15);      /* Stronger from .08 */
    --border-strong: rgba(255, 255, 255, 0.25); /* Stronger from .12 */
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.4);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.5);
  }
}



/* Utilities */
.mt-05{margin-top:.5rem}.mt-1{margin-top:1rem}.mt-3{margin-top:3rem}
.mb-05{margin-bottom:.5rem}.mb-075{margin-bottom:.75rem}.mb-1{margin-bottom:1rem}.mb-15{margin-bottom:1.5rem}
.mr-05{margin-right:.5rem}.m-0{margin:0}
.pl-125{padding-left:1.25rem}
.text-sm{font-size:.875rem}.text-xs{font-size:.75rem}
.fw-600{font-weight:600}
.c-primary{color:var(--accent)}.c-secondary{color:var(--text-secondary)}.c-tertiary{color:var(--text-tertiary)}
.c-success{color:var(--success)}.c-warning{color:var(--warning)}.c-danger{color:var(--danger)}
.bg-success{background:var(--success-bg)}.bg-warning{background:var(--warning-bg)}.bg-danger{background:var(--danger-bg)}
.icon{width:18px;height:18px}.icon-sm{width:16px;height:16px}.w10{width:40px}.h10{height:40px}
svg{width:24px;height:24px}
.warning-box{background:var(--danger-bg);border:1px solid rgba(255,69,58,.3);border-radius:var(--radius-sm);padding:1rem}

*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{font-size:16px;-webkit-font-smoothing:antialiased}
body{font-family:var(--font-sans);background:var(--bg-secondary);color:var(--text-primary);line-height:1.5;min-height:100vh}
.container{max-width:980px;margin:0 auto;padding:3rem 1.5rem}

header{text-align:center;margin-bottom:2.5rem}
.logo { display: inline-flex; align-items: center; justify-content: center; width: 72px; height: 72px; background: linear-gradient(135deg, var(--accent), #5856d6); border-radius: var(--radius-xl); margin-bottom: 1.25rem; box-shadow: var(--shadow-md); }
.logo svg { width: 40px; height: 40px; fill: none; stroke: white; stroke-width: 2; stroke-linecap: round; stroke-linejoin: round; }
h1{font-size:2.75rem;font-weight:700;letter-spacing:-.03em;margin-bottom:.5rem}
.subtitle{color:var(--text-secondary);font-size:1.25rem}

.tabs{display:flex;gap:.25rem;background:var(--bg-tertiary);padding:.25rem;border-radius:var(--radius-md);margin-bottom:1.5rem;overflow-x:auto;scrollbar-width:none}
.tabs::-webkit-scrollbar{display:none}
.tab{flex:1;min-width:max-content;padding:.625rem 1rem;border:none;background:0 0;color:var(--text-secondary);font-family:inherit;font-size:.875rem;font-weight:500;border-radius:var(--radius-sm);cursor:pointer;transition:var(--transition-fast);white-space:nowrap}
.tab:hover{color:var(--text-primary)}
.tab.active{background:var(--bg-elevated);color:var(--text-primary);box-shadow:var(--shadow-sm)}
.tab-content{display:none;animation:fadeIn .3s ease}
.tab-content.active{display:block}
@keyframes fadeIn{from{opacity:0;transform:translateY(8px)}to{opacity:1;transform:translateY(0)}}

.card{background:var(--bg-elevated);border-radius:var(--radius-lg);padding:1.5rem;margin-bottom:1rem;border:1px solid var(--border);box-shadow:var(--shadow-sm)}
.card-header{margin-bottom:1.25rem}
.card-title{font-size:1.25rem;font-weight:600;margin-bottom:.25rem}
.card-description{color:var(--text-secondary);font-size:.875rem}

.hero{text-align:center;padding:2rem 0 3rem}
.hero h2{font-size:2rem;font-weight:700;margin-bottom:1rem}
.hero p{font-size:1.125rem;color:var(--text-secondary);max-width:600px;margin:0 auto 2rem}
.hero-buttons{display:flex;gap:1rem;justify-content:center;flex-wrap:wrap}

.features{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:1rem;margin-top:2rem}
.feature{background:var(--bg-elevated);border:1px solid var(--border);border-radius:var(--radius-lg);padding:1.5rem;transition:var(--transition-fast)}
.feature:hover{border-color:var(--border-strong);box-shadow:var(--shadow-md)}
.feature-icon{width:48px;height:48px;background:var(--info-bg);border-radius:var(--radius-md);display:flex;align-items:center;justify-content:center;margin-bottom:1rem}
.feature-icon svg{color:var(--info)}
.feature h3{font-size:1rem;font-weight:600;margin-bottom:.5rem}
.feature p{font-size:.875rem;color:var(--text-secondary)}

.steps{display:grid;gap:1rem;margin-top:1.5rem}
.step{display:flex;gap:1rem;align-items:flex-start;background:var(--bg-elevated);border:1px solid var(--border);border-radius:var(--radius-md);padding:1.25rem}
.step-number{width:32px;height:32px;background:var(--accent);color:#fff;border-radius:50%;display:flex;align-items:center;justify-content:center;font-weight:600;font-size:.875rem;flex-shrink:0}
.step-content h4{font-size:.9375rem;font-weight:600;margin-bottom:.25rem}
.step-content p{font-size:.875rem;color:var(--text-secondary)}

.section-header{margin-bottom:1.5rem}
.section-header h2{font-size:1.5rem;font-weight:600;margin-bottom:.5rem}
.section-header p{color:var(--text-secondary);font-size:.9375rem}

.faq-list{display:flex;flex-direction:column;gap:.75rem}
.faq-item{background:var(--bg-elevated);border:1px solid var(--border);border-radius:var(--radius-md);overflow:hidden}
.faq-question{width:100%;padding:1rem 1.25rem;background:0 0;border:none;text-align:left;font-family:inherit;font-size:.9375rem;font-weight:600;color:var(--text-primary);cursor:pointer;display:flex;justify-content:space-between;align-items:center;gap:1rem;transition:var(--transition-fast)}
.faq-question:hover{background:var(--bg-secondary)}
.faq-question svg{width:20px;height:20px;color:var(--text-tertiary);transition:transform var(--transition-fast);flex-shrink:0}
.faq-item.open .faq-question svg{transform:rotate(180deg)}
.faq-answer{display:none;padding:0 1.25rem 1.25rem;font-size:.875rem;color:var(--text-secondary);line-height:1.6}
.faq-item.open .faq-answer{display:block}
.faq-answer code{background:var(--bg-tertiary);padding:.125rem .375rem;border-radius:4px;font-family:var(--font-mono);font-size:.8125rem}

.callout{background:var(--warning-bg);border:1px solid rgba(255,159,10,.2);border-radius:var(--radius-md);padding:1rem 1.25rem;margin-bottom:1.25rem}
.callout.callout-info{background:var(--info-bg);border-color:rgba(88,86,214,.2)}
.callout-title{font-size:.875rem;font-weight:600;color:var(--warning);margin-bottom:.5rem;display:flex;align-items:center;gap:.5rem}
.callout.callout-info .callout-title{color:var(--info)}
.callout ul{padding-left:1.25rem;font-size:.875rem;color:var(--text-secondary)}
.callout li{margin-bottom:.375rem}
.callout code{background:var(--bg-tertiary);padding:.125rem .375rem;border-radius:4px;font-family:var(--font-mono);font-size:.75rem}
.callout pre{background:var(--bg-primary);border:1px solid var(--border);color:var(--text-primary);padding:.875rem 1rem;border-radius:var(--radius-sm);overflow-x:auto;margin-top:.75rem;font-family:var(--font-mono);font-size:.75rem}
@media(prefers-color-scheme:dark){.callout pre{background:var(--bg-tertiary)}}

.upload-zone{border:2px dashed var(--border-strong);border-radius:var(--radius-md);padding:2.5rem 1.5rem;text-align:center;cursor:pointer;transition:var(--transition-fast);background:var(--bg-secondary)}
.upload-zone:hover,.upload-zone.dragover{border-color:var(--accent);background:var(--info-bg)}
.upload-zone input{display:none}
.upload-icon{width:48px;height:48px;margin:0 auto 1rem;color:var(--text-tertiary)}
.upload-zone:hover .upload-icon{color:var(--accent)}
.upload-title{font-size:1rem;font-weight:500;margin-bottom:.25rem}
.upload-hint{font-size:.8125rem;color:var(--text-secondary)}

.btn{display:inline-flex;align-items:center;justify-content:center;gap:.5rem;padding:.75rem 1.5rem;border-radius:var(--radius-sm);font-family:inherit;font-size:.9375rem;font-weight:500;cursor:pointer;border:none;transition:var(--transition-fast);text-decoration:none}
.btn:disabled{opacity:.5;cursor:not-allowed}
.btn-primary{background:var(--accent);color:#fff}
.btn-primary:hover:not(:disabled){background:var(--accent-hover)}
.btn-secondary{background:var(--bg-tertiary);color:var(--text-primary)}
.btn-secondary:hover:not(:disabled){background:var(--border-strong)}

.message{padding:1rem 1.25rem;border-radius:var(--radius-md);margin-bottom:1rem;font-size:.9375rem;display:flex;align-items:flex-start;gap:.75rem}
.message-success{background:var(--success-bg);color:var(--success);border:1px solid rgba(52,199,89,.2)}
.message-error{background:var(--danger-bg);color:var(--danger);border:1px solid rgba(255,59,48,.2)}

.search-box{display:flex;gap:.5rem;margin-bottom:1rem}
.search-input{flex:1;padding:.75rem 1rem;border:1px solid var(--border);border-radius:var(--radius-sm);background:var(--bg-secondary);color:var(--text-primary);font-family:inherit;font-size:.9375rem}
.search-input:focus{outline:none;border-color:var(--accent)}
.search-input::placeholder{color:var(--text-tertiary)}

.cert-list{display:flex;flex-direction:column;gap:.75rem}
.cert-item{background:var(--bg-secondary);border:1px solid var(--border);border-radius:var(--radius-md);padding:1.25rem;transition:var(--transition-fast);cursor:pointer}
.cert-item:hover{border-color:var(--border-strong);box-shadow:var(--shadow-sm)}
.cert-header{display:flex;align-items:flex-start;justify-content:space-between;gap:1rem;margin-bottom:.75rem;flex-wrap:wrap}
.cert-name{font-size:1rem;font-weight:600;word-break:break-word}
.cert-subject{font-size:.75rem;color:var(--text-tertiary);margin-top:.125rem;word-break:break-all}
.cert-meta{display:grid;grid-template-columns:repeat(auto-fit,minmax(180px,1fr));gap:.5rem;font-size:.8125rem;color:var(--text-secondary);margin-bottom:.75rem}
.cert-meta-item{display:flex;align-items:center;gap:.375rem}
.cert-constraints{padding-top:.75rem;border-top:1px solid var(--border)}
.cert-constraints-label{font-size:.75rem;font-weight:500;color:var(--text-secondary);margin-bottom:.5rem}
.constraint-tags{display:flex;flex-wrap:wrap;gap:.375rem}
.constraint-tag{display:inline-flex;padding:.25rem .625rem;background:var(--info-bg);color:var(--info);border-radius:9999px;font-size:.6875rem;font-weight:500}
.fingerprint{font-family:var(--font-mono);font-size:.6875rem;background:var(--bg-tertiary);padding:.625rem .75rem;border-radius:var(--radius-sm);word-break:break-all;margin-top:.75rem;color:var(--text-secondary)}

.status-badge{display:inline-flex;padding:.25rem .75rem;border-radius:9999px;font-size:.6875rem;font-weight:600;text-transform:uppercase;letter-spacing:.025em;white-space:nowrap}
.status-active{background:var(--success-bg);color:var(--success)}
.status-probationary{background:var(--info-bg);color:var(--info)}
.status-revoked{background:var(--danger-bg);color:var(--danger)}

.pagination{display:flex;align-items:center;justify-content:center;gap:.5rem;margin-top:1.5rem;flex-wrap:wrap}
.pagination-btn{padding:.5rem 1rem;border:1px solid var(--border);background:var(--bg-elevated);color:var(--text-primary);font-family:inherit;font-size:.875rem;border-radius:var(--radius-sm);cursor:pointer;transition:var(--transition-fast)}
.pagination-btn:hover:not(:disabled){border-color:var(--accent)}
.pagination-btn:disabled{opacity:.5;cursor:not-allowed}
.pagination-btn.active{background:var(--accent);color:#fff;border-color:var(--accent)}
.pagination-info{font-size:.875rem;color:var(--text-secondary)}

.table-wrapper{overflow-x:auto;border-radius:var(--radius-md);border:1px solid var(--border)}
.audit-table{width:100%;min-width:600px;border-collapse:collapse;font-size:.8125rem}
.audit-table th,.audit-table td{padding:.75rem 1rem;text-align:left;border-bottom:1px solid var(--border)}
.audit-table th{background:var(--bg-tertiary);font-weight:600;color:var(--text-secondary);font-size:.75rem;text-transform:uppercase}
.audit-table tr:last-child td{border-bottom:none}
.audit-table tr:hover td{background:var(--bg-secondary)}

.download-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:1rem;margin-bottom:1.5rem}
.download-card{background:var(--bg-secondary);border:1px solid var(--border);border-radius:var(--radius-md);padding:1.25rem;text-align:center;transition:var(--transition-fast);text-decoration:none;color:inherit}
.download-card:hover{border-color:var(--accent);box-shadow:var(--shadow-md)}
.download-card.recommended{border-color:var(--success);border-width:2px}
.download-card-icon{width:48px;height:48px;margin:0 auto .75rem;background:var(--info-bg);border-radius:var(--radius-md);display:flex;align-items:center;justify-content:center}
.download-card-icon svg{color:var(--info)}
.download-card.recommended .download-card-icon{background:var(--success-bg)}
.download-card.recommended .download-card-icon svg{color:var(--success)}
.download-card h4{font-size:.9375rem;font-weight:600;margin-bottom:.25rem}
.download-card p{font-size:.75rem;color:var(--text-secondary)}
.download-card .badge{display:inline-block;padding:.125rem .5rem;background:var(--success);color:#fff;border-radius:9999px;font-size:.625rem;font-weight:600;text-transform:uppercase;margin-bottom:.5rem}

.platform-tabs{display:flex;gap:.5rem;margin-bottom:1rem;flex-wrap:wrap}
.platform-tab{padding:.5rem 1rem;border:1px solid var(--border);background:var(--bg-secondary);color:var(--text-secondary);font-family:inherit;font-size:.8125rem;font-weight:500;border-radius:var(--radius-sm);cursor:pointer;transition:var(--transition-fast);display:flex;align-items:center;gap:.375rem}
.platform-tab:hover{border-color:var(--border-strong);color:var(--text-primary)}
.platform-tab.active{background:var(--accent);border-color:var(--accent);color:#fff}
.platform-content{display:none}
.platform-content.active{display:block}

.export-actions{display:flex;gap:.75rem;margin-top:1rem;flex-wrap:wrap}

footer{text-align:center;margin-top:3rem;padding-top:2rem;border-top:1px solid var(--border);color:var(--text-secondary);font-size:.8125rem}
footer p{margin-bottom:.375rem}
footer a{color:var(--accent);text-decoration:none;font-weight:500}
footer a:hover{text-decoration:underline}
.footer-link{display:inline-flex;align-items:center;gap:.375rem;margin-top:.75rem}

.research-callout{margin-top:2rem;padding:1.5rem;background:var(--info-bg);border:1px solid rgba(88,86,214,.18);border-radius:var(--radius-lg)}
.research-callout h3{font-size:1rem;margin-bottom:.5rem}
.research-callout p{color:var(--text-secondary);font-size:.9375rem;line-height:1.7;margin:0}

.modal-overlay{position:fixed;inset:0;background:rgba(0,0,0,.5);backdrop-filter:blur(4px);z-index:1000;display:flex;align-items:center;justify-content:center;padding:1rem;animation:fadeIn .2s ease}
.modal{background:var(--bg-elevated);border-radius:var(--radius-lg);width:100%;max-width:700px;max-height:85vh;overflow:hidden;display:flex;flex-direction:column;box-shadow:0 25px 50px -12px rgba(0,0,0,.25)}
.modal-header{display:flex;align-items:center;justify-content:space-between;padding:1.25rem 1.5rem;border-bottom:1px solid var(--border);flex-shrink:0}
.modal-title{font-size:1.125rem;font-weight:600;margin:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.modal-close{width:32px;height:32px;border:none;background:var(--bg-tertiary);color:var(--text-secondary);border-radius:var(--radius-sm);font-size:1.25rem;cursor:pointer;transition:var(--transition-fast);flex-shrink:0}
.modal-close:hover{background:var(--danger-bg);color:var(--danger)}
#modalContent{padding:1.5rem;overflow-y:auto;flex:1}
.detail-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:1rem;margin-bottom:1.5rem}
.detail-item{background:var(--bg-secondary);padding:1rem;border-radius:var(--radius-md)}
.detail-label{font-size:.6875rem;font-weight:600;color:var(--text-tertiary);text-transform:uppercase;letter-spacing:.05em;margin-bottom:.375rem}
.detail-value{font-size:.9375rem;font-weight:500;color:var(--text-primary)}
.detail-value.mono{font-family:var(--font-mono);font-size:.75rem;word-break:break-all}
.eligibility-box{background:var(--info-bg);border:1px solid rgba(88,86,214,.2);border-radius:var(--radius-md);padding:1rem;margin-bottom:1.5rem}
.eligibility-box.eligible{background:var(--success-bg);border-color:rgba(52,199,89,.2)}
.eligibility-title{font-size:.875rem;font-weight:600;margin-bottom:.5rem;display:flex;align-items:center;gap:.5rem}
.eligibility-box .eligibility-title{color:var(--info)}
.eligibility-box.eligible .eligibility-title{color:var(--success)}
.eligibility-details{font-size:.8125rem;color:var(--text-secondary)}
.progress-bar{height:6px;background:var(--bg-tertiary);border-radius:3px;margin-top:.75rem;overflow:hidden}
.progress-fill{height:100%;background:var(--info);border-radius:3px;transition:width .3s ease}
.eligibility-box.eligible .progress-fill{background:var(--success)}
.modal-section-title{font-size:.875rem;font-weight:600;margin-bottom:.75rem;color:var(--text-primary)}
.cert-audit-table{width:100%;border-collapse:collapse;font-size:.75rem}
.cert-audit-table th,.cert-audit-table td{padding:.625rem .75rem;text-align:left;border-bottom:1px solid var(--border)}
.cert-audit-table th{background:var(--bg-tertiary);font-weight:600;color:var(--text-secondary);font-size:.6875rem;text-transform:uppercase}
.cert-audit-table tr:last-child td{border-bottom:none}

.empty-state{text-align:center;padding:3rem 1.5rem;color:var(--text-secondary)}
.loading{display:flex;align-items:center;justify-content:center;padding:2rem;color:var(--text-secondary)}
.spinner{width:20px;height:20px;border:2px solid var(--border);border-top-color:var(--accent);border-radius:50%;animation:spin .8s linear infinite;margin-right:.75rem}
@keyframes spin{to{transform:rotate(360deg)}}

@media(max-width:768px){.container{padding:2rem 1rem}h1{font-size:2rem}.hero h2{font-size:1.5rem}.btn{width:100%}.hero-buttons{flex-direction:column}.features,.download-grid{grid-template-columns:1fr}.search-box{flex-direction:column}.modal{max-height:90vh}.detail-grid{grid-template-columns:1fr}}