/* ========== RESET & BASE ========== */
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:'Inter',sans-serif;background:var(--bg);color:var(--text);min-height:100vh;overflow-x:hidden}
a{text-decoration:none;color:inherit}
button{font-family:inherit;cursor:pointer;border:none;outline:none}

/* ========== CSS VARIABLES ========== */
:root{
  --bg:#f8fafc;--bg2:#ffffff;--bg3:#f1f5f9;
  --surface:#ffffff;--surface2:#f1f5f9;--surface3:#e2e8f0;
  --border:#e2e8f0;--border2:#cbd5e1;
  --accent:#4f46e5;--accent2:#4338ca;--accent-glow:rgba(79,70,229,.35);
  --teal:#0d9488;--teal-glow:rgba(13,148,136,.3);
  --amber:#d97706;--rose:#e11d48;--green:#16a34a;
  --text:#0f172a;--text2:#475569;--text3:#64748b;
  --radius:12px;--radius-lg:18px;--radius-xl:24px;
  --shadow:0 4px 24px rgba(0,0,0,.06);--shadow-lg:0 8px 48px rgba(0,0,0,.1);
  --transition:.2s ease;
  
  /* Grade Colors - Light */
  --g-Ap:#8b5cf6; --g-A:#4f46e5; --g-Bp:#0d9488; --g-B:#2563eb;
  --g-Cp:#16a34a; --g-C:#65a30d; --g-Dp:#d97706; --g-D:#ea580c; --g-E:#e11d48;
}

[data-theme="dark"] {
  --bg:#080c14;--bg2:#0d1220;--bg3:#111827;
  --surface:#141c2e;--surface2:#1a2540;--surface3:#1e2d4a;
  --border:#1e2d4a;--border2:#243356;
  --accent:#6366f1;--accent2:#818cf8;--accent-glow:rgba(99,102,241,.35);
  --teal:#14b8a6;--teal-glow:rgba(20,184,166,.3);
  --amber:#f59e0b;--rose:#f43f5e;--green:#22c55e;
  --text:#e2e8f0;--text2:#94a3b8;--text3:#64748b;
  --shadow:0 4px 24px rgba(0,0,0,.4);--shadow-lg:0 8px 48px rgba(0,0,0,.6);

  /* Grade Colors - Dark */
  --g-Ap:#a78bfa; --g-A:#818cf8; --g-Bp:#2dd4bf; --g-B:#60a5fa;
  --g-Cp:#4ade80; --g-C:#a3e635; --g-Dp:#fbbf24; --g-D:#fb923c; --g-E:#fb7185;
}

/* ========== NAVBAR ========== */
.navbar{position:sticky;top:0;z-index:100;background:var(--bg2);opacity:0.95;backdrop-filter:blur(16px);border-bottom:1px solid var(--border);padding:0 1.5rem}
.nav-container{max-width:1400px;margin:0 auto;display:flex;align-items:center;justify-content:space-between;height:64px}
.nav-brand{display:flex;align-items:center;gap:.75rem}
.brand-icon{font-size:1.75rem;line-height:1}
.brand-text{display:flex;flex-direction:column}
.brand-name{font-size:1.1rem;font-weight:800;background:linear-gradient(135deg,#818cf8,#14b8a6);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text;line-height:1.1}
.brand-tagline{font-size:.65rem;color:var(--text3);text-transform:uppercase;letter-spacing:.08em}
.nav-links{display:flex;gap:.25rem}
.nav-link{padding:.45rem 1rem;border-radius:8px;font-size:.875rem;font-weight:500;color:var(--text2);transition:var(--transition);display:inline-flex;align-items:center;gap:.45rem}
.nav-link:hover,.nav-link.active{color:var(--text);background:var(--surface2)}
.nav-contact-avatar{width:24px;height:24px;border-radius:50%;object-fit:cover;object-position:center;border:2px solid var(--surface);box-shadow:0 0 0 1px var(--border2)}

/* ========== HERO ========== */
.hero{position:relative;min-height:100vh;display:flex;align-items:center;padding:5rem 1.5rem 4rem;gap:4rem;max-width:1400px;margin:0 auto}
.hero-bg{position:fixed;inset:0;z-index:-1;overflow:hidden;pointer-events:none}
.hero-orb{position:absolute;border-radius:50%;filter:blur(80px);animation:float 8s ease-in-out infinite}
.orb-1{width:600px;height:600px;background:radial-gradient(circle,rgba(99,102,241,.18),transparent 70%);top:-150px;left:-100px;animation-delay:0s}
.orb-2{width:500px;height:500px;background:radial-gradient(circle,rgba(20,184,166,.14),transparent 70%);bottom:-100px;right:-100px;animation-delay:-3s}
.orb-3{width:400px;height:400px;background:radial-gradient(circle,rgba(139,92,246,.1),transparent 70%);top:40%;left:50%;animation-delay:-6s}
@keyframes float{0%,100%{transform:translateY(0) scale(1)}50%{transform:translateY(-30px) scale(1.05)}}
.grid-overlay{position:absolute;inset:0;background-image:linear-gradient(rgba(99,102,241,.04) 1px,transparent 1px),linear-gradient(90deg,rgba(99,102,241,.04) 1px,transparent 1px);background-size:48px 48px}
.hero-content{flex:1;max-width:640px}
.hero-badge{display:inline-flex;align-items:center;gap:.5rem;padding:.35rem 1rem;border-radius:999px;border:1px solid rgba(99,102,241,.4);background:rgba(99,102,241,.1);font-size:.8rem;font-weight:500;color:var(--accent2);margin-bottom:1.5rem}
.badge-dot{width:8px;height:8px;border-radius:50%;background:var(--accent2);animation:pulse 2s infinite}
@keyframes pulse{0%,100%{opacity:1}50%{opacity:.4}}
.hero-title{font-size:clamp(2.5rem,5vw,4rem);font-weight:900;line-height:1.1;letter-spacing:-.02em;margin-bottom:1.25rem}
.gradient-text{background:linear-gradient(135deg,#818cf8 0%,#14b8a6 60%,#6ee7b7 100%);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}
.hero-subtitle{font-size:1.1rem;color:var(--text2);line-height:1.7;margin-bottom:2rem}
.hero-cta{display:flex;gap:1rem;flex-wrap:wrap;margin-bottom:2.5rem}
.btn{display:inline-flex;align-items:center;gap:.5rem;padding:.75rem 1.5rem;border-radius:10px;font-size:.95rem;font-weight:600;transition:all .25s ease;cursor:pointer}
.btn-primary{background:linear-gradient(135deg,var(--accent),#8b5cf6);color:#fff;box-shadow:0 0 24px var(--accent-glow)}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 4px 32px var(--accent-glow)}
.btn-ghost{background:var(--surface);color:var(--text2);border:1px solid var(--border2)}
.btn-ghost:hover{color:var(--accent);border-color:var(--accent);background:rgba(79,70,229,.1)}
.hero-stats{display:flex;align-items:center;gap:1.5rem}
.stat-item{text-align:center}
.stat-number{display:block;font-size:1.75rem;font-weight:800;background:linear-gradient(135deg,#818cf8,#14b8a6);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}
.stat-label{font-size:.75rem;color:var(--text3);text-transform:uppercase;letter-spacing:.06em}
.stat-divider{width:1px;height:40px;background:var(--border2)}
.hero-visual{flex:1;display:flex;justify-content:center;align-items:center}
.dashboard-mockup{background:var(--surface);border:1px solid var(--border2);border-radius:var(--radius-xl);padding:0;overflow:hidden;width:100%;max-width:420px;box-shadow:var(--shadow-lg),0 0 60px var(--accent-glow)}
.mockup-header{display:flex;align-items:center;gap:.75rem;padding:.85rem 1.25rem;background:var(--surface2);border-bottom:1px solid var(--border)}
.mockup-dots{display:flex;gap:.4rem}
.mockup-dots span{width:10px;height:10px;border-radius:50%;background:var(--border2)}
.mockup-dots span:nth-child(1){background:#f43f5e}
.mockup-dots span:nth-child(2){background:#f59e0b}
.mockup-dots span:nth-child(3){background:#22c55e}
.mockup-title{font-size:.85rem;font-weight:600;color:var(--text2)}
.mockup-body{padding:1.25rem}
.mockup-bar-group{margin-bottom:1rem}
.mockup-label{font-size:.7rem;font-weight:600;color:var(--text3);text-transform:uppercase;letter-spacing:.06em;margin-bottom:.35rem}
.mockup-bar{height:26px;border-radius:6px;background:linear-gradient(90deg,var(--accent),var(--teal));width:var(--w);display:flex;align-items:center;padding:0 .5rem;animation:barIn 1s ease forwards}
@keyframes barIn{from{width:0}to{width:var(--w)}}
.mockup-bar span{font-size:.72rem;font-weight:700;color:#fff}
.mockup-stats-row{display:flex;gap:.75rem;margin-top:1.25rem}
.mockup-stat{flex:1;background:var(--surface2);border-radius:8px;padding:.6rem;text-align:center}
.ms-val{display:block;font-size:1.1rem;font-weight:800;color:#818cf8}
.ms-key{font-size:.65rem;color:var(--text3);text-transform:uppercase;letter-spacing:.04em}

/* ========== TOOLS SECTION ========== */
.tools-section{padding:5rem 1.5rem;max-width:1400px;margin:0 auto}
.section-container{}
.section-header{text-align:center;margin-bottom:3rem}
.section-badge{display:inline-block;padding:.3rem .9rem;background:rgba(99,102,241,.12);border:1px solid rgba(99,102,241,.3);border-radius:999px;font-size:.78rem;font-weight:600;color:var(--accent2);text-transform:uppercase;letter-spacing:.08em;margin-bottom:.75rem}
.section-title{font-size:clamp(1.8rem,3vw,2.5rem);font-weight:800;margin-bottom:.75rem}
.section-desc{color:var(--text2);font-size:1rem}
.tools-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(300px,1fr));gap:1.5rem}
.tool-card{position:relative;background:var(--surface);border:1px solid var(--border2);border-radius:var(--radius-xl);padding:2rem;overflow:hidden;transition:all .3s ease;display:flex;flex-direction:column;gap:.75rem}
.tool-card.featured{border-color:rgba(99,102,241,.5);background:linear-gradient(135deg,rgba(99,102,241,.08),rgba(20,184,166,.05))}
.tool-card.featured:hover{transform:translateY(-4px);box-shadow:0 12px 48px var(--accent-glow),var(--shadow-lg);border-color:rgba(99,102,241,.8)}
.tool-card.coming-soon{opacity:.65;pointer-events:none}
.tool-glow{position:absolute;top:-40px;right:-40px;width:200px;height:200px;background:radial-gradient(circle,rgba(99,102,241,.25),transparent 70%);pointer-events:none}
.tool-icon-wrap{}
.tool-icon{font-size:2.25rem}
.tool-badge-tag{display:inline-block;padding:.2rem .65rem;border-radius:999px;font-size:.72rem;font-weight:700;background:rgba(34,197,94,.15);color:#22c55e;border:1px solid rgba(34,197,94,.3);width:fit-content}
.tool-badge-tag.coming{background:rgba(245,158,11,.1);color:var(--amber);border-color:rgba(245,158,11,.3)}
.tool-name{font-size:1.25rem;font-weight:800}
.tool-desc{font-size:.875rem;color:var(--text2);line-height:1.6}
.tool-features{list-style:none;display:flex;flex-direction:column;gap:.4rem;margin-top:.25rem}
.tool-features li{font-size:.82rem;color:var(--text2);display:flex;align-items:center;gap:.5rem}
.feature-check{color:var(--teal);font-weight:700;font-size:.85rem}
.tool-action{display:flex;align-items:center;gap:.5rem;margin-top:auto;color:var(--accent2);font-size:.875rem;font-weight:600;padding-top:.75rem;border-top:1px solid var(--border)}
.tool-action.disabled{color:var(--text3)}
.tool-card.featured .tool-action svg{transition:transform .2s}
.tool-card.featured:hover .tool-action svg{transform:translateX(4px)}

/* ========== FOOTER ========== */
.footer{border-top:1px solid var(--border);padding:2rem 1.5rem;margin-top:4rem}
.footer-container{max-width:1400px;margin:0 auto;display:flex;align-items:center;justify-content:space-between;flex-wrap:wrap;gap:1rem}
.footer-brand{display:flex;align-items:center;gap:.5rem;font-size:1rem;font-weight:700}
.footer-icon{font-size:1.25rem}
.footer-name{background:linear-gradient(135deg,#818cf8,#14b8a6);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}
.footer-copy{font-size:.8rem;color:var(--text3)}

/* ========== TOOL PAGE ========== */
.tool-header{position:relative;overflow:hidden;padding:3.5rem 1.5rem 2.5rem;border-bottom:1px solid var(--border)}
.tool-header-bg{position:absolute;inset:0;z-index:0;pointer-events:none}
.tool-header-content{position:relative;z-index:1;max-width:1400px;margin:0 auto}
.tool-breadcrumb{display:flex;align-items:center;gap:.5rem;font-size:.8rem;color:var(--text3);margin-bottom:.75rem}
.tool-breadcrumb a{color:var(--accent2)}
.tool-title{font-size:clamp(1.8rem,3vw,2.75rem);font-weight:900;background:linear-gradient(135deg,var(--text),var(--accent));-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text;margin-bottom:.5rem}
.tool-subtitle{color:var(--text2);font-size:1rem}
.tool-main{padding:2rem 1.5rem 4rem}
.tool-container{max-width:1400px;margin:0 auto;display:flex;flex-direction:column;gap:2rem}
body.data-focus .tool-header{display:none}
body.data-focus .tool-main{padding-top:1rem}
body.data-focus .tool-container{gap:1rem}

/* ========== PANEL ========== */
.panel{background:var(--surface);border:1px solid var(--border2);border-radius:var(--radius-xl);padding:2rem}
.panel-header{margin-bottom:1.5rem}
.panel-title{font-size:1.1rem;font-weight:700;display:flex;align-items:center;gap:.6rem;margin-bottom:.4rem}
.panel-icon{font-size:1.2rem}
.panel-desc{font-size:.85rem;color:var(--text2)}
.import-panel .panel-header{display:flex;align-items:flex-start;justify-content:space-between;gap:1rem}
.import-toggle{display:inline-flex;align-items:center;justify-content:center;min-height:36px;padding:.45rem .9rem;border:1px solid var(--border2);border-radius:8px;background:var(--surface2);color:var(--text2);font-size:.82rem;font-weight:700;white-space:nowrap}
.import-toggle[hidden]{display:none}
.import-toggle:hover{border-color:var(--accent);color:var(--accent2);background:rgba(99,102,241,.08)}
.import-panel.is-collapsed{padding:1rem 1.25rem}
.import-panel.is-collapsed .panel-header{margin-bottom:0;align-items:center}
.import-panel.is-collapsed .panel-desc,.import-panel.is-collapsed .upload-grid{display:none!important}
.import-panel.is-collapsed .panel-title{margin-bottom:0;font-size:1rem}
body.data-focus .import-panel.is-collapsed{display:none}
#school-name-bar{flex-wrap:wrap}
#school-name-input{min-width:220px}
.btn-source-files{padding:.38rem .75rem;border:1px solid var(--border2);border-radius:8px;background:var(--surface);color:var(--text2);font-size:.78rem;font-weight:700;white-space:nowrap}
.btn-source-files:hover{border-color:var(--accent);color:var(--accent2);background:rgba(99,102,241,.08)}
.settings-menu{position:relative;display:inline-flex}
.settings-menu-toggle{padding-right:1.7rem;position:relative}
.settings-menu-toggle::after{content:'▾';position:absolute;right:.7rem;top:50%;transform:translateY(-50%);font-size:.72rem;color:var(--text3)}
.settings-menu-toggle.active,.settings-menu-toggle[aria-expanded="true"]{border-color:var(--accent);color:var(--accent2);background:rgba(99,102,241,.08)}
.settings-menu-panel{position:absolute;right:0;top:calc(100% + .45rem);z-index:20;min-width:190px;padding:.35rem;background:var(--surface);border:1px solid var(--border2);border-radius:8px;box-shadow:var(--shadow-lg)}
.settings-menu-panel[hidden]{display:none}
.settings-menu-item{display:flex;width:100%;align-items:center;justify-content:flex-start;padding:.55rem .7rem;border-radius:6px;background:transparent;color:var(--text2);font-size:.82rem;font-weight:650;text-align:left;white-space:nowrap}
.settings-menu-item:hover,.settings-menu-item.active{color:var(--accent2);background:rgba(99,102,241,.08)}

/* ========== UPLOAD ========== */
.upload-area{position:relative;border:2px dashed var(--border2);border-radius:var(--radius-lg);padding:3rem 2rem;text-align:center;transition:all .25s;cursor:pointer}
.upload-area:hover,.upload-area.drag-over{border-color:var(--accent);background:rgba(99,102,241,.06)}
.upload-area input[type="file"]{position:absolute;inset:0;opacity:0;cursor:pointer;width:100%;height:100%}
.sslc-import-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:1.5rem}
.sslc-import-heading{font-size:.9rem;margin-bottom:.5rem;color:var(--text2)}
.sslc-paste-panel{border:1px solid var(--border2);border-radius:var(--radius-lg);padding:1rem;background:var(--surface)}
.sslc-paste-box{width:100%;min-height:158px;margin-top:1rem;padding:.85rem;border-radius:8px;border:1px solid var(--border2);background:var(--surface2);color:var(--text);font-family:inherit;font-size:.85rem;line-height:1.5;resize:vertical;outline:none}
.sslc-paste-box:focus{border-color:var(--accent);box-shadow:0 0 0 3px var(--accent-glow)}
.upload-visual{pointer-events:none}
.upload-icon{font-size:3rem;margin-bottom:.75rem;display:block}
.upload-primary{font-size:1rem;font-weight:600;margin-bottom:.25rem}
.upload-secondary{font-size:.875rem;color:var(--text2);margin-bottom:.75rem}
.upload-hint{display:inline-block;padding:.25rem .75rem;background:rgba(99,102,241,.1);border-radius:999px;font-size:.75rem;color:var(--accent2)}
.upload-status{display:flex;align-items:center;gap:1rem;padding:1rem 1.25rem;background:rgba(34,197,94,.08);border:1px solid rgba(34,197,94,.3);border-radius:var(--radius);margin-top:1rem}
.status-icon{width:36px;height:36px;border-radius:50%;background:rgba(34,197,94,.2);display:flex;align-items:center;justify-content:center;font-size:1rem;color:#22c55e;flex-shrink:0}
.status-info{flex:1}
.status-filename{display:block;font-weight:600;font-size:.9rem}
.status-rows{font-size:.8rem;color:var(--text2)}
.btn-clear{background:none;color:var(--text3);font-size:1.1rem;padding:.25rem .5rem;border-radius:6px;transition:var(--transition)}
.btn-clear:hover{color:var(--rose);background:rgba(244,63,94,.1)}

/* ========== LOADING ========== */
.loading-overlay{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:1rem;padding:3rem;color:var(--text2)}
.spinner{width:44px;height:44px;border:3px solid var(--border2);border-top-color:var(--accent);border-radius:50%;animation:spin .8s linear infinite}
@keyframes spin{to{transform:rotate(360deg)}}

/* ========== SUMMARY CARDS ========== */
.summary-cards{display:grid;grid-template-columns:repeat(auto-fit,minmax(160px,1fr));gap:1rem}
.summary-card{background:var(--surface);border:1px solid var(--border2);border-radius:var(--radius-lg);padding:1.25rem 1.5rem;position:relative;overflow:hidden;text-align:center}
.summary-card::before{content:'';position:absolute;top:0;left:0;right:0;height:3px;background:var(--card-color,var(--accent))}
.sslc-card-link{display:block;width:100%;color:inherit;font:inherit;transition:var(--transition)}
.sslc-card-link:hover{transform:translateY(-2px);border-color:var(--card-color,var(--accent));box-shadow:0 8px 24px rgba(15,23,42,.08)}
.sc-value > span[onclick]{display:inline-flex;align-items:center;justify-content:center;margin-left:.45rem;padding:.2rem .45rem;border-radius:999px;border:1px solid rgba(16,185,129,.28);background:rgba(16,185,129,.1);font-size:.72rem;font-weight:750;line-height:1.1;vertical-align:middle}
.sc-label{font-size:.72rem;font-weight:600;text-transform:uppercase;letter-spacing:.07em;color:var(--text3);margin-bottom:.35rem}
.sc-value{font-size:2rem;font-weight:800;color:var(--card-color,var(--text));line-height:1}
.sc-sub{font-size:.75rem;color:var(--text3);margin-top:.2rem}

/* ========== TABS ========== */
.tabs-bar{display:flex;gap:.5rem;flex-wrap:wrap;border-bottom:1px solid var(--border);padding-bottom:.5rem}
.tab-btn{padding:.6rem 1.25rem;border-radius:8px 8px 0 0;font-size:.875rem;font-weight:600;color:var(--text2);background:none;transition:var(--transition);border-bottom:2px solid transparent;margin-bottom:-1px}
.tab-btn:hover{color:var(--text);background:var(--surface2)}
.tab-btn.active{color:var(--accent2);border-bottom-color:var(--accent);background:rgba(99,102,241,.08)}

/* ========== TABLE PANEL ========== */
.table-panel{background:var(--surface);border:1px solid var(--border2);border-radius:var(--radius-xl);overflow:hidden}
.table-panel-header{display:flex;align-items:center;justify-content:space-between;padding:1.25rem 1.5rem;border-bottom:1px solid var(--border);flex-wrap:wrap;gap:.75rem}
.table-panel-header h3{font-size:1rem;font-weight:700}
.btn-export{padding:.45rem 1rem;border-radius:8px;font-size:.8rem;font-weight:600;background:rgba(99,102,241,.12);color:var(--accent2);border:1px solid rgba(99,102,241,.3);transition:var(--transition)}
.btn-export:hover{background:rgba(99,102,241,.25)}
.table-scroll{overflow-x:auto}
.result-table{width:100%;border-collapse:collapse;font-size:.85rem}
.result-table th{padding:.75rem 1rem;text-align:left;font-size:.72rem;font-weight:700;text-transform:uppercase;letter-spacing:.06em;color:var(--text3);background:var(--surface2);white-space:nowrap;border-bottom:1px solid var(--border)}
.result-table td{padding:.7rem 1rem;border-bottom:1px solid var(--border);color:var(--text);white-space:nowrap}
.result-table tbody tr:last-child td{border-bottom:none}
.result-table tbody tr:hover td{background:rgba(99,102,241,.05)}
.result-table tfoot td{font-weight:700;background:var(--surface2);border-top:2px solid var(--border2)}
td.num{text-align:right;font-variant-numeric:tabular-nums}
#grade-table th:not(:first-child),#grade-table td:not(:first-child),
#class-grade-table th:not(:nth-child(2)),#class-grade-table td:not(:nth-child(2)){text-align:center}
#grade-table th:first-child,#grade-table td:first-child,
#class-grade-table th:nth-child(2),#class-grade-table td:nth-child(2){text-align:left}
td.pass-pct{font-weight:700;color:var(--green)}
td.full-a{color:#818cf8;font-weight:700}
td.five-a{color:var(--teal);font-weight:700}
.badge-pass{display:inline-block;padding:.15rem .5rem;border-radius:4px;font-size:.72rem;font-weight:700}
.badge-pass.pass{background:rgba(34,197,94,.15);color:#22c55e}
.badge-pass.fail{background:rgba(244,63,94,.12);color:var(--rose)}
.badge-pass.ehs{background:rgba(245,158,11,.12);color:var(--amber)}
.badge-pass.nhs{background:rgba(100,116,139,.12);color:var(--text3)}

/* ========== GRADE BADGE ========== */
.grade-badge{display:inline-block;padding:.15rem .5rem;border-radius:5px;font-size:.8rem;font-weight:800;min-width:32px;text-align:center}
.grade-Ap{background:rgba(139,92,246,.2);color:var(--g-Ap)}
.grade-A{background:rgba(99,102,241,.2);color:var(--g-A)}
.grade-Bp{background:rgba(20,184,166,.2);color:var(--g-Bp)}
.grade-B{background:rgba(59,130,246,.2);color:var(--g-B)}
.grade-Cp{background:rgba(34,197,94,.2);color:var(--g-Cp)}
.grade-C{background:rgba(132,204,22,.2);color:var(--g-C)}
.grade-Dp{background:rgba(245,158,11,.2);color:var(--g-Dp)}
.grade-D{background:rgba(249,115,22,.2);color:var(--g-D)}
.grade-E{background:rgba(244,63,94,.2);color:var(--g-E)}
.grade-Ab{background:rgba(100,116,139,.15);color:var(--text3)}

/* ========== STUDENT TABLE CONTROLS ========== */
.table-controls{display:flex;gap:.5rem;flex-wrap:wrap}
.search-input,.filter-select{padding:.45rem .85rem;border-radius:8px;background:var(--surface2);border:1px solid var(--border2);color:var(--text);font-size:.82rem;font-family:inherit;outline:none;transition:var(--transition)}
.search-input{width:220px}
.search-input:focus,.filter-select:focus{border-color:var(--accent);box-shadow:0 0 0 3px var(--accent-glow)}
.filter-select option{background:var(--surface2)}

/* Student list table */
.student-list-header{align-items:flex-start;gap:1rem}
.table-title-block{display:flex;flex-direction:column;gap:.25rem;min-width:180px}
.table-meta{font-size:.78rem;color:var(--text3);font-weight:500}
.student-table-controls{justify-content:flex-end;align-items:center;width:100%}
.btn-clear-filters{background:var(--surface2);color:var(--text2);border-color:var(--border2)}
.btn-clear-filters:hover{color:var(--rose);border-color:rgba(225,29,72,.35);background:rgba(225,29,72,.08)}
.student-table-scroll{max-height:68vh;position:relative}
.student-table{width:100%;min-width:0;border-collapse:separate;border-spacing:0;table-layout:auto}
.student-table th{position:sticky;top:0;z-index:3;text-align:center}
.student-table thead tr:nth-child(2) th{top:39px}
.student-table td{vertical-align:middle}
.student-table th,.student-table td{padding:.5rem .45rem;border-right:1px solid var(--border2)}
.student-table th:first-child,.student-table td:first-child{border-left:1px solid var(--border2)}
.student-table thead th{border-bottom:1px solid var(--border2)}
.student-table th.col-rank{width:42px;min-width:42px;text-align:center;color:var(--text3)}
.student-table td.col-rank{width:42px;min-width:42px;text-align:center;color:var(--text3)}
.student-table .col-reg{width:104px;min-width:104px;font-variant-numeric:tabular-nums}
.student-table .col-student{min-width:170px;white-space:normal}
.student-table .col-class{width:64px;min-width:64px}
.student-table .col-total{width:68px;min-width:68px}
.student-table .col-pct{width:58px;min-width:58px}
.student-table .col-status{width:78px;min-width:78px}
.sslc-student-table{min-width:940px}
.sslc-student-table th.col-rank,.sslc-student-table td.col-rank{width:38px;min-width:38px;left:0}
.sslc-student-table th.col-reg,.sslc-student-table td.col-reg{width:92px;min-width:92px;left:38px}
.sslc-student-table th.col-student,.sslc-student-table td.col-student{min-width:132px;left:130px}
.sslc-student-table th.col-status,.sslc-student-table td.col-status{width:58px;min-width:58px}
.sslc-student-table th.col-total,.sslc-student-table td.col-total{width:44px;min-width:44px}
.sslc-student-table th:not(.col-rank):not(.col-reg):not(.col-student):not(.col-status):not(.col-total),
.sslc-student-table td:not(.col-rank):not(.col-reg):not(.col-student):not(.col-status):not(.col-total){text-align:center;min-width:50px;max-width:58px;white-space:normal}
.sslc-student-table .sslc-subject-head{white-space:normal;line-height:1.15;padding:.45rem .28rem;font-size:.66rem;letter-spacing:0}
.student-table th.col-rank,.student-table td.col-rank,
.student-table th.col-reg,.student-table td.col-reg,
.student-table th.col-student,.student-table td.col-student{position:sticky;background:var(--surface);z-index:2}
.student-table th.col-rank,.student-table td.col-rank{left:0}
.student-table th.col-reg,.student-table td.col-reg{left:42px}
.student-table th.col-student,.student-table td.col-student{left:146px;box-shadow:8px 0 12px rgba(15,23,42,.04)}
.student-table th.col-rank,.student-table th.col-reg,.student-table th.col-student{background:var(--surface2);z-index:4}
.student-table th.col-reg,.student-table td.col-reg,
.student-table th.col-class,.student-table td.col-class,
.student-table th.col-total,.student-table td.col-total{text-align:center}
.student-name-cell{white-space:normal;line-height:1.35}
.student-name-cell strong{display:block;color:var(--text);font-weight:750}
.student-name-cell span{display:block;color:var(--text3);font-size:.72rem;margin-top:.15rem}
.student-improved-row td{background:rgba(34,197,94,.045)}
.student-failed-row .col-reg,.student-failed-row .col-student{background:rgba(244,63,94,.12)}
.student-failed-row .student-name-cell strong{color:var(--rose)}
.student-table tbody tr:hover td{background:rgba(99,102,241,.07)}
.sub-cell{white-space:nowrap;font-size:0.75rem;padding:0.38rem 0.42rem;vertical-align:middle;text-align:center;min-width:72px}
.sub-scores{display:inline-flex;align-items:center;justify-content:center;gap:2px;font-variant-numeric:tabular-nums;color:var(--text);padding:.12rem .28rem;border-radius:6px;background:var(--surface2)}
.sub-sep{color:var(--text3);margin:0 1px}
.sub-aplus{background:rgba(34,197,94,.11)}
.sub-aplus .sub-scores{background:rgba(34,197,94,.14);color:#166534}
.sub-aplus .grade-sm{background:rgba(34,197,94,.22);color:#166534}
.sub-failed{background:rgba(244,63,94,.12)}
.sub-failed .sub-scores{background:rgba(244,63,94,.12);color:var(--rose)}
.sub-failed .grade-sm{background:rgba(244,63,94,.18);color:var(--rose)}
.sub-empty{color:var(--text3)}
.grade-sm{font-size:0.62rem!important;padding:1px 5px!important;min-width:24px;vertical-align:middle;margin-left:4px}
.imp-arr{color:var(--green);font-size:0.6rem;margin-left:1px;cursor:default;vertical-align:super}
.imp-delta{font-size:0.7rem;color:var(--green)}
.th-mid{vertical-align:middle!important}
.table-sort-btn{display:inline-flex;align-items:center;justify-content:center;gap:.3rem;width:100%;min-height:24px;background:transparent;color:inherit;font:inherit;text-transform:inherit;letter-spacing:inherit;padding:0}
.table-sort-btn:hover,.table-sort-btn.active{color:var(--accent2)}
.sort-indicator{font-size:.62rem;font-weight:700;color:var(--accent2);line-height:1;text-transform:none;letter-spacing:0}
.th-sub-name{white-space:normal;word-break:break-word;min-width:48px;max-width:72px;text-align:center;line-height:1.3}
.th-sub-scores{font-size:0.6rem!important;font-weight:400!important;color:var(--text3)!important;text-align:center;padding:2px 4px!important;letter-spacing:0.02em}
.student-empty-row td{padding:0!important}
.student-empty-state{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:.25rem;min-height:180px;color:var(--text2)}
.student-empty-state strong{color:var(--text);font-size:1rem}
.student-empty-state span{font-size:.84rem;color:var(--text3)}
.exclusion-summary{display:inline-flex;align-items:center;min-height:32px;padding:.35rem .7rem;border-radius:8px;background:var(--surface2);border:1px solid var(--border2);color:var(--text2);font-size:.78rem;font-weight:700;white-space:nowrap}
.exclusion-toggle{display:inline-flex;align-items:center;gap:.5rem;min-height:36px;padding:.45rem .75rem;border:1px solid var(--border2);border-radius:8px;background:var(--surface2);color:var(--text2);font-size:.82rem;font-weight:700;white-space:nowrap}
.exclusion-toggle input{width:18px;height:18px;accent-color:var(--accent)}
.exclude-check{width:18px;height:18px;accent-color:var(--accent);vertical-align:middle}
.exclusion-row-muted td{background:rgba(100,116,139,.08);color:var(--text3)}
.exclusion-note{display:inline-flex;margin-left:.4rem;padding:.12rem .4rem;border-radius:999px;background:rgba(245,158,11,.14);color:var(--amber);font-size:.65rem;font-weight:800;vertical-align:middle}
.exclusion-student-scroll{max-height:58vh;overflow:auto}

/* Merit lists */
.merit-table-scroll{max-height:68vh;position:relative}
.merit-table{min-width:860px}
.merit-table th,.merit-table td{text-align:center}
.merit-table td.num{text-align:center}
.merit-table .merit-col-num{width:62px;min-width:62px}
.merit-table .merit-col-class{width:72px;min-width:72px}
.merit-table .merit-col-reg{width:106px;min-width:106px;font-variant-numeric:tabular-nums}
.merit-table .merit-col-name{min-width:250px;text-align:left}
.merit-table th.merit-col-name{text-align:center}
.merit-table .merit-col-mark{width:54px;min-width:54px;font-variant-numeric:tabular-nums}
.merit-table .merit-col-total{width:84px;min-width:84px;font-variant-numeric:tabular-nums}
.merit-table .merit-col-pct{width:78px;min-width:78px;font-variant-numeric:tabular-nums}
.merit-table .merit-col-not-aplus{min-width:190px;text-align:left;white-space:normal}
.merit-table th.merit-col-not-aplus{text-align:center}
.merit-table-controls{justify-content:flex-end}
.merit-improved-row td{background:rgba(34,197,94,.13)}
.merit-improved-row .merit-col-name strong::after{content:'Improved';display:inline-flex;margin-left:.5rem;padding:.12rem .4rem;border-radius:999px;background:rgba(16,185,129,.16);color:var(--green);font-size:.65rem;font-weight:800;vertical-align:middle}
.toppers-limit-control{display:inline-flex;align-items:center;gap:.45rem;padding:.35rem .65rem;border:1px solid var(--border2);border-radius:8px;background:var(--surface2);color:var(--text2);font-size:.78rem;font-weight:650}
.toppers-limit-control input{width:68px;padding:.25rem .35rem;text-align:center}
.btn-pdf{background:linear-gradient(135deg,#0f766e,#0d9488);color:#fff;border:none}

/* ========== THEME TOGGLE ========== */
.theme-toggle{display:flex;align-items:center;justify-content:center;width:40px;height:40px;border-radius:10px;background:var(--surface2);border:1px solid var(--border);color:var(--text2);margin-left:1rem;transition:var(--transition)}
.theme-toggle:hover{color:var(--accent);border-color:var(--accent)}
.theme-toggle svg{width:20px;height:20px}
[data-theme="dark"] .sun-icon{display:block}
[data-theme="dark"] .moon-icon{display:none}
.sun-icon{display:none}
.moon-icon{display:block}

/* ========== PAGINATION ========== */
.pagination{display:flex;align-items:center;justify-content:center;gap:.5rem;padding:1rem;flex-wrap:wrap}
.page-btn{padding:.4rem .75rem;border-radius:7px;font-size:.8rem;font-weight:600;background:var(--surface2);color:var(--text2);border:1px solid var(--border);transition:var(--transition)}
.page-btn:hover,.page-btn.active{background:var(--accent);color:#fff;border-color:var(--accent)}
.page-info{font-size:.8rem;color:var(--text3)}

/* ========== GRADE DISTRIBUTION ========== */
.grade-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:1.5rem}
.grade-group-card{background:var(--surface);border:1px solid var(--border2);border-radius:var(--radius-xl);padding:1.5rem}
.ggc-title{font-size:1rem;font-weight:700;margin-bottom:1.25rem;display:flex;align-items:center;gap:.5rem}
.ggc-title span{display:inline-block;width:10px;height:10px;border-radius:50%}
.grade-bars{display:flex;flex-direction:column;gap:.6rem}
.gbar-row{display:flex;align-items:center;gap:.75rem}
.gbar-label{width:28px;font-size:.8rem;font-weight:700;color:var(--text2)}
.gbar-track{flex:1;height:20px;background:var(--surface2);border-radius:4px;overflow:hidden}
.gbar-fill{height:100%;border-radius:4px;transition:width .5s ease;display:flex;align-items:center;padding:0 .4rem;min-width:2px}
.gbar-count{font-size:.7rem;font-weight:700;color:#fff;white-space:nowrap}
.gbar-pct{width:40px;font-size:.75rem;color:var(--text3);text-align:right}

/* ========== EMPTY STATE ========== */
.empty-state{display:flex;flex-direction:column;align-items:center;justify-content:center;text-align:center;padding:4rem 2rem;gap:1rem;color:var(--text2)}
.empty-icon{font-size:4rem}
.empty-state h3{font-size:1.25rem;font-weight:700;color:var(--text)}
.empty-state p{max-width:480px;font-size:.9rem;line-height:1.7}

/* ========== HIDDEN ========== */
.hidden{display:none!important}

/* ========== RESPONSIVE ========== */
@media(max-width:900px){
  .hero{flex-direction:column;text-align:center;padding-top:6rem}
  .hero-cta{justify-content:center}
  .hero-stats{justify-content:center}
  .hero-visual{width:100%;max-width:360px;margin:0 auto}
  .table-controls{gap:.5rem}
  .search-input{width:100%}
  .student-table-controls{width:100%;justify-content:stretch}
  .student-table-controls .filter-select,.student-table-controls .btn-export{flex:1 1 150px}
}
@media(max-width:600px){
  .tool-header{padding:2.5rem 1rem 1.5rem}
  .panel{padding:1.25rem}
  .tabs-bar{gap:.25rem}
  .tab-btn{padding:.5rem .75rem;font-size:.8rem}
}