:root{--krirk-green: #3aaa35;--krirk-green-dark: #1f7a2b;--krirk-red: #ed1c24;--bg: #f3f7f2;--surface: #ffffff;--surface-2: #eef4ec;--border: #dbe5d8;--text: #17201a;--muted: #5f6f62;--primary: #23862f;--primary-ink: #ffffff;--primary-soft: #e3f3e1;--accent: #d8222a;--ok: #138a52;--ok-soft: #e2f6ec;--warn: #a96800;--warn-soft: #fff3dc;--bad: #c42b2b;--bad-soft: #fde8e8;--radius: 12px;--shadow: 0 1px 2px rgba(20, 30, 60, .06), 0 4px 16px rgba(20, 30, 60, .05);color-scheme:light}@media (prefers-color-scheme: dark){:root:not([data-theme=light]){--bg: #0f1511;--surface: #161e18;--surface-2: #1d2820;--border: #2b3a2e;--text: #e5eee6;--muted: #93a596;--primary: #5cc957;--primary-ink: #0b130c;--primary-soft: #1b3320;--accent: #ff5a5f;--ok: #4cd08f;--ok-soft: #133524;--warn: #f0b552;--warn-soft: #3a2c10;--bad: #ff7b7b;--bad-soft: #3d1a1a;color-scheme:dark}}*{box-sizing:border-box}html,body{margin:0}body{background:var(--bg);color:var(--text);font-family:Sarabun,Tahoma,system-ui,sans-serif;font-size:15px;line-height:1.55}a{color:var(--primary)}h1,h2,h3{margin:0 0 .5em;line-height:1.25}h1{font-size:1.5rem}h2{font-size:1.2rem}h3{font-size:1.05rem}.topbar{position:sticky;top:0;z-index:10;display:flex;align-items:center;gap:16px;padding:8px 20px;color:#fff;background:linear-gradient(90deg,var(--krirk-green-dark),var(--krirk-green));border-bottom:3px solid var(--krirk-red);box-shadow:0 2px 10px #0000001f}.brand{font-weight:700;display:flex;align-items:center;gap:10px;white-space:nowrap;color:#fff;text-decoration:none}.brand .logo-chip{height:40px;padding:3px 8px}.brand-text{display:flex;flex-direction:column;line-height:1.15}.brand-text small{font-weight:400;font-size:.75rem;opacity:.85}.logo-chip{background:#fff;border-radius:8px;display:inline-flex;align-items:center;justify-content:center}.logo-chip img{height:100%;width:auto;display:block}.nav{display:flex;gap:4px;flex:1;overflow-x:auto;scrollbar-width:none}.nav::-webkit-scrollbar{display:none}.nav a{text-decoration:none;color:#ffffffd9;padding:6px 12px;border-radius:8px;white-space:nowrap}.nav a.active,.nav a:hover{background:#ffffff2e;color:#fff}.user{display:flex;align-items:center;gap:8px;color:#ffffffe6;font-size:.9rem}.topbar .badge.info{background:#fff3;color:#fff}.topbar .btn{background:transparent;color:#fff;border-color:#ffffff80}.topbar .btn:hover{background:#ffffff26}main{max-width:1180px;margin:0 auto;padding:24px 16px 64px}.card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);box-shadow:var(--shadow);padding:18px}.card+.card{margin-top:16px}.grid>.card+.card{margin-top:0}.grid{display:grid;gap:16px}.grid.cols-2{grid-template-columns:repeat(auto-fit,minmax(280px,1fr))}.grid.cols-4{grid-template-columns:repeat(auto-fit,minmax(150px,1fr))}.row{display:flex;gap:10px;align-items:center;flex-wrap:wrap}.spacer{flex:1}.muted{color:var(--muted)}.small{font-size:.85rem}.btn{font:inherit;border:1px solid var(--border);background:var(--surface);color:var(--text);padding:7px 14px;border-radius:8px;cursor:pointer;display:inline-flex;align-items:center;gap:6px;text-decoration:none}.btn:hover{background:var(--surface-2)}.btn:disabled{opacity:.55;cursor:not-allowed}.btn.primary{background:var(--primary);color:var(--primary-ink);border-color:var(--primary)}.btn.primary:hover{filter:brightness(1.08)}.btn.danger{color:var(--bad);border-color:var(--bad)}.btn.sm{padding:3px 10px;font-size:.85rem}.btn.lg{padding:12px 22px;font-size:1.05rem}label.field{display:flex;flex-direction:column;gap:4px;font-size:.9rem;color:var(--muted)}input,select,textarea{font:inherit;color:var(--text);background:var(--surface);border:1px solid var(--border);border-radius:8px;padding:8px 10px;width:100%}textarea{min-height:140px;font-family:ui-monospace,Consolas,monospace;font-size:.85rem}input:focus,select:focus,textarea:focus{outline:2px solid var(--primary-soft);border-color:var(--primary)}input[type=checkbox]{width:auto}.tabs{display:flex;gap:2px;border-bottom:1px solid var(--border);margin:16px 0;overflow-x:auto}.tabs a{text-decoration:none;color:var(--muted);padding:10px 14px;border-bottom:2px solid transparent;white-space:nowrap}.tabs a.active{color:var(--primary);border-bottom-color:var(--primary);font-weight:600}.table-wrap{overflow-x:auto;border:1px solid var(--border);border-radius:var(--radius);background:var(--surface)}table{width:100%;border-collapse:collapse;font-size:.92rem}th,td{padding:9px 12px;text-align:left;border-bottom:1px solid var(--border);white-space:nowrap}th{background:var(--surface-2);font-weight:600;color:var(--muted);font-size:.85rem}tr:last-child td{border-bottom:none}td.wrap{white-space:normal}.badge{display:inline-block;padding:1px 9px;border-radius:99px;font-size:.8rem;background:var(--surface-2);color:var(--muted)}.badge.ok{background:var(--ok-soft);color:var(--ok)}.badge.warn{background:var(--warn-soft);color:var(--warn)}.badge.bad{background:var(--bad-soft);color:var(--bad)}.badge.info{background:var(--primary-soft);color:var(--primary)}.stat{padding:14px 16px}.stat .num{font-size:1.7rem;font-weight:700;font-variant-numeric:tabular-nums}.stat .lbl{color:var(--muted);font-size:.85rem}.event-card{display:block;text-decoration:none;color:inherit;transition:transform 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32px)}.toast.bad{background:var(--bad);color:#fff}.modal-back{position:fixed;top:0;right:0;bottom:0;left:0;background:#0a0f1e73;display:grid;place-items:center;z-index:50;padding:16px}.modal{background:var(--surface);border-radius:var(--radius);padding:20px;width:min(560px,100%);max-height:90vh;overflow:auto}.center-page{min-height:100vh;display:grid;place-items:center;padding:16px}.login-card{max-width:420px;width:100%;text-align:center}.email-preview{border:1px solid var(--border);border-radius:10px;background:#fff;color:#222;padding:16px;overflow:auto;max-height:560px}.chips{display:flex;flex-wrap:wrap;gap:6px}.chip{font-size:.8rem;padding:2px 8px;border-radius:6px;background:var(--surface-2);border:1px solid var(--border);cursor:pointer;font-family:ui-monospace,Consolas,monospace}.scan-result{text-align:center;padding:22px;border-radius:var(--radius)}.scan-result .big{font-size:1.5rem;font-weight:700}#qr-reader{width:100%;max-width:420px;margin:0 auto;border-radius:12px;overflow:hidden}#qr-reader video{border-radius:12px}.dropzone{border:2px dashed var(--border);border-radius:var(--radius);padding:28px;text-align:center;color:var(--muted);cursor:pointer}.dropzone.drag{border-color:var(--primary);background:var(--primary-soft)}.landing-header{display:flex;align-items:center;gap:14px;padding:10px 24px;background:var(--surface);border-bottom:3px solid var(--krirk-green)}.landing-header .logo-chip{height:52px}.landing-header .title{font-weight:700;font-size:1.1rem;line-height:1.2}.landing-header .title small{display:block;font-weight:400;color:var(--muted);font-size:.85rem}.hero{position:relative;overflow:hidden;color:#fff;background:radial-gradient(circle at 85% 20%,rgba(237,28,36,.35),transparent 40%),linear-gradient(120deg,#145a20 0%,var(--krirk-green-dark) 45%,var(--krirk-green) 100%)}.hero-inner{max-width:1180px;margin:0 auto;padding:44px 16px 52px;display:grid;grid-template-columns:1.4fr 1fr;gap:32px;align-items:center}.hero h1{font-size:2.1rem;margin-bottom:.3em}.hero p{opacity:.92;font-size:1.05rem;max-width:560px}.hero-stats{display:flex;gap:28px;margin-top:22px;flex-wrap:wrap}.hero-stats .num{font-size:1.8rem;font-weight:700}.hero-stats .lbl{font-size:.85rem;opacity:.85}.signin-card{background:var(--surface);color:var(--text);border-radius:16px;padding:26px;box-shadow:0 12px 40px #00000040;text-align:center}.signin-card .logo-chip{height:86px;padding:6px 12px;margin-bottom:8px}.signin-card h2{margin:8px 0 4px}.section-head{display:flex;align-items:flex-end;gap:12px;flex-wrap:wrap;margin:32px 0 16px}.section-head h2{margin:0;font-size:1.4rem}.section-head h2:after{content:"";display:block;width:56px;height:4px;background:var(--krirk-red);border-radius:2px;margin-top:6px}.filter-pills{display:flex;gap:6px;flex-wrap:wrap}.pill{font:inherit;font-size:.88rem;border:1px solid var(--border);background:var(--surface);color:var(--muted);padding:5px 14px;border-radius:99px;cursor:pointer}.pill.active{background:var(--primary);border-color:var(--primary);color:var(--primary-ink)}.course-grid{display:grid;gap:20px;grid-template-columns:repeat(auto-fill,minmax(260px,1fr))}.course-card{background:var(--surface);border:1px solid var(--border);border-radius:14px;overflow:hidden;box-shadow:var(--shadow);display:flex;flex-direction:column;transition:transform .15s,box-shadow .15s}.course-card:hover{transform:translateY(-3px);box-shadow:0 10px 28px #143c1924}.course-cover{position:relative;height:128px;padding:14px;color:#fff;display:flex;flex-direction:column;justify-content:flex-end}.course-cover .pattern{position:absolute;top:0;right:0;bottom:0;left:0;opacity:.18;background-image:radial-gradient(circle at 1px 1px,#fff 1.2px,transparent 0);background-size:14px 14px}.course-cover .cat{position:relative;font-size:.78rem;font-weight:600;letter-spacing:.3px;opacity:.95}.date-badge{position:absolute;top:12px;right:12px;background:#fff;color:var(--text);border-radius:10px;text-align:center;padding:4px 10px;min-width:54px;box-shadow:0 2px 8px #00000026;line-height:1.15}.date-badge .d{font-size:1.35rem;font-weight:700;color:var(--krirk-green-dark)}.date-badge .m{font-size:.72rem;color:var(--muted)}.course-body{padding:14px 16px 16px;display:flex;flex-direction:column;gap:6px;flex:1}.course-body h3{margin:0;font-size:1.05rem;line-height:1.35}.course-meta{color:var(--muted);font-size:.86rem;display:flex;flex-direction:column;gap:2px}.course-desc{color:var(--muted);font-size:.88rem;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}.course-foot{margin-top:auto;padding-top:10px;border-top:1px dashed var(--border);display:flex;align-items:center;gap:8px;font-size:.85rem}.empty-state{text-align:center;padding:48px 16px;color:var(--muted);border:2px dashed var(--border);border-radius:14px}.landing-footer{margin-top:48px;padding:22px 16px;text-align:center;color:var(--muted);font-size:.85rem;border-top:1px solid var(--border);background:var(--surface)}.landing-footer b{color:var(--krirk-green-dark)}@media (max-width: 1000px){.topbar{flex-wrap:wrap;row-gap:4px}.nav{order:3;flex:1 0 100%}.user{margin-left:auto}}@media (max-width: 860px){.hero-inner{grid-template-columns:1fr;padding:28px 16px 32px}.hero h1{font-size:1.6rem}}@media (max-width: 560px){.landing-header{padding:8px 12px;gap:10px}.landing-header .logo-chip{height:42px}.landing-header .title small,.landing-header .badge{display:none}.hero-stats{gap:18px}.hero-stats .num{font-size:1.4rem}.section-head input{max-width:none!important}}@media (max-width: 640px){.topbar{flex-wrap:wrap;padding:8px 12px;gap:8px}.nav{order:3;flex:1 0 100%}.user{margin-left:auto}.user .email{display:none}main{padding:16px 12px 48px}}