*{box-sizing:border-box}html{background:var(--wf-background-deep)}body{margin:0;font-family:Inter,"Noto Sans Thai",ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;color:var(--wf-text)}a{text-decoration:none;color:inherit}.wf-body{background:radial-gradient(circle at top right,rgba(162,187,59,.08),transparent 30%),var(--wf-background);min-height:100vh}.wf-container{width:min(1180px,calc(100% - 32px));margin:0 auto}.wf-header{position:sticky;top:0;z-index:40;border-bottom:1px solid var(--wf-border);background:rgba(9,9,9,.88);backdrop-filter:blur(18px)}.wf-logo{display:flex;align-items:center;gap:9px;font-weight:800;letter-spacing:-.02em}.wf-logo-mark{color:var(--wf-primary);font-size:1.35rem}.wf-nav-link{padding:.55rem .85rem;border-radius:.7rem;color:var(--wf-text-secondary);font-size:.9rem}.wf-nav-link:hover{background:var(--wf-surface-secondary);color:var(--wf-text)}.wf-search{border:1px solid var(--wf-border);background:var(--wf-surface-secondary);border-radius:.75rem;overflow:hidden}.wf-search input{background:transparent;color:var(--wf-text);border:0;outline:0;padding:.65rem .85rem;min-width:260px}.wf-search button{padding:.65rem .85rem;background:var(--wf-primary);color:#111;font-weight:700}.wf-btn,.wf-btn-secondary,.wf-btn-danger{display:inline-flex;align-items:center;justify-content:center;gap:.45rem;border-radius:.75rem;padding:.7rem 1rem;font-weight:750;border:1px solid transparent;transition:.2s}.wf-btn{background:var(--wf-primary);color:#111}.wf-btn:hover{background:var(--wf-primary-hover)}.wf-btn-secondary{background:var(--wf-surface-secondary);border-color:var(--wf-border)}.wf-btn-secondary:hover{border-color:#3b3b3b}.wf-btn-danger{background:rgba(231,76,60,.13);border-color:rgba(231,76,60,.35);color:#ff8f85}.wf-section{padding:28px 0}.wf-section-title{font-size:clamp(1.45rem,3vw,2rem);font-weight:800;letter-spacing:-.03em}.wf-muted{color:var(--wf-text-secondary)}.wf-card{display:block;overflow:hidden;border-radius:1rem;background:var(--wf-surface);border:1px solid var(--wf-border);transition:.2s}.wf-card:hover{transform:translateY(-2px);border-color:#343434}.wf-card-cover{height:155px;background-size:cover;background-position:center;position:relative;background-color:var(--wf-surface-secondary)}.wf-badge{position:absolute;right:10px;top:10px;background:var(--wf-primary);color:#111;padding:.25rem .5rem;border-radius:.45rem;font-size:.72rem;font-weight:800}.wf-meta{display:flex;gap:.45rem;font-size:.78rem;color:var(--wf-text-secondary)}.wf-hero{border:1px solid var(--wf-border);border-radius:1.35rem;overflow:hidden;background:linear-gradient(120deg,rgba(162,187,59,.09),rgba(12,12,12,.92)),var(--wf-surface);min-height:420px;display:grid;grid-template-columns:1.05fr .95fr}.wf-hero-copy{padding:clamp(28px,5vw,58px);display:flex;flex-direction:column;justify-content:center}.wf-kicker{font-size:.76rem;letter-spacing:.12em;text-transform:uppercase;color:var(--wf-primary);font-weight:800}.wf-hero h1{font-size:clamp(2.2rem,5vw,4.5rem);line-height:.98;font-weight:900;letter-spacing:-.055em;margin:.8rem 0 1rem}.wf-hero-image{background-size:cover;background-position:center;min-height:300px}.wf-category{border:1px solid var(--wf-border);background:var(--wf-surface);border-radius:1rem;padding:1rem;text-align:center;transition:.2s}.wf-category:hover{border-color:var(--wf-primary);background:#11140d}.wf-progress{height:6px;border-radius:999px;background:#232323;overflow:hidden}.wf-progress>span{display:block;height:100%;background:var(--wf-primary)}.wf-panel{background:var(--wf-surface);border:1px solid var(--wf-border);border-radius:1rem}.wf-bottom-nav{position:fixed;left:0;right:0;bottom:0;z-index:50;border-top:1px solid var(--wf-border);background:rgba(8,8,8,.94);backdrop-filter:blur(18px);padding:8px max(12px,env(safe-area-inset-left)) calc(8px + env(safe-area-inset-bottom));display:grid;grid-auto-flow:column;grid-auto-columns:1fr}.wf-bottom-nav a{display:flex;flex-direction:column;align-items:center;gap:3px;color:var(--wf-text-secondary)}.wf-bottom-nav span{font-size:1.1rem}.wf-bottom-nav small{font-size:.65rem}.wf-footer{border-top:1px solid var(--wf-border);background:var(--wf-background-deep);margin-top:40px}.wf-player{aspect-ratio:16/9;width:100%;background:#000;border-radius:1rem;overflow:hidden}.wf-player iframe,.wf-player video,.wf-player audio{width:100%;height:100%;border:0}.wf-player audio{height:80px;margin-top:calc(50% - 40px)}.wf-lesson-row{display:flex;align-items:center;gap:12px;padding:13px 14px;border-top:1px solid var(--wf-border)}.wf-lesson-row:hover{background:var(--wf-surface-secondary)}.wf-lesson-num{width:30px;height:30px;border-radius:50%;display:grid;place-items:center;border:1px solid var(--wf-border);color:var(--wf-primary);font-weight:800}.wf-input,.wf-textarea,.wf-select{width:100%;border:1px solid var(--wf-border);background:#0a0a0a;color:var(--wf-text);border-radius:.75rem;padding:.7rem .8rem;outline:none}.wf-input:focus,.wf-textarea:focus,.wf-select:focus{border-color:var(--wf-primary)}.wf-textarea{min-height:110px;resize:vertical}.wf-table{width:100%;border-collapse:collapse}.wf-table th,.wf-table td{text-align:left;padding:.8rem;border-bottom:1px solid var(--wf-border);vertical-align:top}.wf-table th{font-size:.78rem;color:var(--wf-text-secondary);font-weight:700}.wf-admin-shell{display:grid;grid-template-columns:240px 1fr;min-height:100vh}.wf-sidebar{background:var(--wf-background-deep);border-right:1px solid var(--wf-border);padding:18px;position:sticky;top:0;height:100vh}.wf-sidebar a{display:flex;padding:.7rem .8rem;border-radius:.7rem;color:var(--wf-text-secondary);margin-bottom:3px}.wf-sidebar a:hover,.wf-sidebar a.active{background:var(--wf-surface-secondary);color:var(--wf-text)}.wf-admin-main{padding:26px}.wf-stat{padding:1.1rem;border:1px solid var(--wf-border);border-radius:1rem;background:var(--wf-surface)}.wf-alert{padding:.85rem 1rem;border:1px solid var(--wf-border);background:var(--wf-surface-secondary);border-radius:.75rem}.wf-alert.success{border-color:rgba(162,187,59,.4)}.wf-alert.error{border-color:rgba(231,76,60,.45)}@media(max-width:1023px){.wf-hero{grid-template-columns:1fr}.wf-hero-image{order:-1;min-height:240px}.wf-admin-shell{display:block}.wf-sidebar{position:relative;height:auto;border-right:0;border-bottom:1px solid var(--wf-border)}.wf-sidebar nav{display:flex;overflow:auto;gap:4px}.wf-sidebar a{white-space:nowrap}.wf-admin-main{padding:18px}}

/* Branded 404 / missing content page (WhiteFlix EDU 2.0.2) */
.wf-notfound{min-height:calc(100svh - 160px);display:grid;align-items:center;padding:clamp(40px,9vh,100px) 0}
.wf-notfound-card{max-width:760px;margin:0 auto;text-align:center;border:1px solid var(--wf-border);border-radius:24px;background:radial-gradient(circle at 50% 0%,rgba(162,187,59,.10),transparent 52%),var(--wf-surface);padding:clamp(28px,6vw,64px) clamp(20px,5vw,56px)}
.wf-notfound-icon{width:88px;height:88px;display:grid;place-items:center;margin:0 auto 24px;border:1px solid rgba(162,187,59,.26);border-radius:22px;color:var(--wf-primary);background:rgba(162,187,59,.07)}
.wf-notfound-eyebrow{color:var(--wf-primary);font-size:.77rem;font-weight:800;letter-spacing:.14em;margin:0 0 12px}
.wf-notfound h1{font-size:clamp(2.1rem,6vw,3.65rem);line-height:1.15;font-weight:900;letter-spacing:-.035em;margin:0 0 18px;color:var(--wf-text)}
.wf-notfound-description{font-size:clamp(.95rem,2vw,1.075rem);line-height:1.9;color:var(--wf-text-secondary);margin:0 auto;max-width:550px}
.wf-notfound-actions{display:flex;justify-content:center;gap:12px;flex-wrap:wrap;margin-top:30px}
.wf-notfound-hint{font-size:.83rem;color:var(--wf-text-secondary);margin:28px 0 0;opacity:.75}
@media(max-width:480px){.wf-notfound{min-height:calc(100svh - 180px);padding:24px 0}.wf-notfound-card{border-radius:18px}.wf-notfound-icon{height:70px;width:70px;border-radius:18px;margin-bottom:20px}.wf-notfound-actions{flex-direction:column}.wf-notfound-actions a{width:100%}.wf-notfound-break{display:none}}


/* Media Library Picker / Unified Branding (2.0.3) */
.wf-logo-mark{width:34px;height:34px;display:inline-flex;align-items:center;justify-content:center;flex-shrink:0}
.wf-brand-icon{display:block;width:100%;height:100%;object-fit:contain;border-radius:8px}
.wf-media-icon{width:2.25em;height:2.25em;object-fit:contain;vertical-align:middle;display:inline-block}
.wf-bottom-nav .wf-media-icon{width:23px;height:23px}
.wf-media-field{min-width:0}
.wf-media-field-row{display:flex;align-items:center;gap:7px;min-width:0}
.wf-media-value{flex:1;min-width:0;text-overflow:ellipsis;font-size:.84rem}
.wf-media-thumb{width:48px;height:48px;border:1px solid var(--wf-border);border-radius:10px;background:var(--wf-surface-secondary);flex-shrink:0;display:grid;place-items:center;overflow:hidden;color:var(--wf-primary);font-size:1.4rem}
.wf-media-thumb:empty:before{content:'▧';opacity:.5}
.wf-media-thumb img{width:100%;height:100%;object-fit:contain}
.wf-media-choose,.wf-media-clear{padding:.6rem .7rem;flex-shrink:0}
.wf-media-field small{display:block;font-size:.72rem;margin-top:5px}
.wf-nav-media .wf-media-thumb{width:38px;height:38px}
.wf-nav-media .wf-media-choose{padding:.5rem}
.wf-nav-media .wf-media-clear{padding:.5rem}
.wf-media-overlay[hidden]{display:none}
.wf-media-overlay{position:fixed;inset:0;z-index:1000;padding:clamp(8px,3vw,24px);background:rgba(0,0,0,.82);display:grid;place-items:center;backdrop-filter:blur(5px)}
.wf-media-dialog{background:var(--wf-surface);border:1px solid var(--wf-border);border-radius:19px;width:min(100%,950px);height:min(760px,90dvh);min-height:400px;display:flex;flex-direction:column;box-shadow:0 18px 60px #000a;outline:0}
.wf-media-dialog-top,.wf-media-dialog-bottom{padding:15px 20px;display:flex;align-items:center;justify-content:space-between;gap:12px;border-bottom:1px solid var(--wf-border)}
.wf-media-dialog-bottom{border-bottom:0;border-top:1px solid var(--wf-border);flex-wrap:wrap}
.wf-media-dialog-top h2{font-size:1.2rem;font-weight:800}
.wf-media-dialog-tools{padding:16px 20px;display:flex;flex-wrap:wrap;gap:12px;align-items:center}
.wf-media-dialog-tools #wf-media-search{flex:1;min-width:160px}
#wf-media-upload-form{display:flex;gap:7px;align-items:center;flex-wrap:wrap}
#wf-media-upload-form input{max-width:245px;font-size:.8rem}
.wf-media-grid{padding:10px 20px 20px;flex:1;min-height:0;overflow-y:auto;display:grid;grid-template-columns:repeat(auto-fill,minmax(135px,1fr));align-content:start;gap:12px}
.wf-media-tile{border:1px solid var(--wf-border);border-radius:12px;overflow:hidden;background:var(--wf-surface-secondary);text-align:left;cursor:pointer;transition:background .15s,border-color .15s}
.wf-media-tile:hover,.wf-media-tile:focus-visible{border-color:var(--wf-primary)}
.wf-media-tile img{width:100%;height:115px;object-fit:contain;padding:7px}
.wf-media-tile span{display:block;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;padding:9px;font-size:.75rem}
.wf-media-message{padding:0 20px;min-height:20px;font-size:.83rem;color:var(--wf-text-secondary)}
.wf-media-message.error{color:#ff8f85}
@media(max-width:680px){.wf-media-dialog{height:94dvh}.wf-media-dialog-tools{display:block}.wf-media-dialog-tools #wf-media-search{width:100%;margin-bottom:10px}#wf-media-upload-form input{max-width:100%;flex:1}.wf-media-grid{grid-template-columns:repeat(2,minmax(0,1fr));padding:10px}.wf-media-dialog-top,.wf-media-dialog-bottom{padding:12px}.wf-media-field-row{flex-wrap:wrap}}