@import url('https://fonts.googleapis.com/css2?family=Maven+Pro:wght@400;500;600;700;800&display=swap');
:root{--red:#E62B34;--red-dark:#C9242C;--red-deep:#b01118;--yellow:#FEDE01;--yellow-dark:#ecb640;--ink:#1a1b1b;--gray:#959494;--pale:#f7f6f6;--white:#fff;--blue:#56badd;--shadow:0 18px 50px rgba(26,27,27,.12)}
*{box-sizing:border-box}html{font-family:"Maven Pro",system-ui,sans-serif;color:var(--ink);background:var(--pale)}body{margin:0;font-size:16px}a{color:inherit}button,input,select{font:inherit}.page-shell{width:min(1180px,calc(100% - 32px));margin:34px auto 70px}.app-header{min-height:78px;background:#fff;border-bottom:1px solid #e8e8e8;display:flex;align-items:center;justify-content:space-between;padding:10px max(20px,calc((100% - 1180px)/2));gap:24px}.brand{display:flex;align-items:center;gap:12px;text-decoration:none;font-size:1.15rem}.brand img{width:52px;height:52px;border-radius:50%;object-fit:cover}.brand strong{color:var(--red)}nav{display:flex;gap:20px;align-items:center}nav a{text-decoration:none;font-weight:700;color:#4a4b4b}nav a:hover{color:var(--red)}
h1{font-size:clamp(1.8rem,4vw,2.7rem);margin:0 0 8px;line-height:1.05}h2{margin:0 0 16px;font-size:1.35rem}p{line-height:1.55}.muted{color:#6d6e6e}.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:24px}.section-head p{margin:6px 0 0}.button{border:0;border-radius:13px;min-height:46px;padding:12px 18px;font-weight:800;text-decoration:none;display:inline-flex;align-items:center;justify-content:center;cursor:pointer}.button.primary{background:var(--yellow);color:var(--ink)}.button.red{background:var(--red);color:#fff}.button.ghost{background:#fff;border:1px solid #ddd}.button.danger{background:#fff0f0;color:var(--red-deep);border:1px solid #f0c5c7}.button.small{min-height:36px;padding:8px 12px;font-size:.88rem}.button:hover{filter:brightness(.97);transform:translateY(-1px)}
.card{background:#fff;border:1px solid #e5e5e5;border-radius:20px;padding:24px;box-shadow:0 7px 28px rgba(26,27,27,.06)}.grid{display:grid;gap:20px}.two-col{grid-template-columns:repeat(2,minmax(0,1fr))}.three-col{grid-template-columns:repeat(3,minmax(0,1fr))}.form-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:18px}.form-grid .wide{grid-column:1/-1}label{font-weight:700;display:grid;gap:7px}input,select{width:100%;border:1px solid #cfcfcf;border-radius:11px;min-height:46px;padding:10px 12px;background:#fff;color:var(--ink)}input:focus,select:focus{outline:3px solid rgba(254,222,1,.55);border-color:var(--yellow-dark)}small{font-weight:500;color:#777}.flash{padding:14px 16px;border-radius:12px;margin-bottom:18px;font-weight:700}.flash.success{background:#e8f7ec;color:#17672b}.flash.error{background:#fff0f0;color:#9d181e}.flash.info{background:#edf8fc;color:#15536a}
.auth-wrap{min-height:100vh;display:grid;place-items:center;padding:30px 18px;background:linear-gradient(145deg,var(--red) 0 42%,var(--pale) 42%)}.auth-card{width:min(520px,100%);background:#fff;border-radius:25px;padding:32px;box-shadow:var(--shadow)}.setup-card{width:min(780px,100%)}.auth-logo{display:block;width:116px;height:116px;border-radius:50%;object-fit:cover;margin:-4px auto 20px}.auth-card h1{text-align:center}.auth-card>p{text-align:center;color:#666;margin-bottom:24px}
.storage-meter{margin:15px 0}.meter-label{display:flex;justify-content:space-between;font-size:.88rem;font-weight:700;color:#666;margin-bottom:7px}.meter-track{height:12px;background:#e7e7e7;border-radius:999px;overflow:hidden}.meter-track span{display:block;height:100%;background:linear-gradient(90deg,var(--yellow-dark),var(--red));border-radius:999px}.folder-chip{display:inline-flex;background:#fff3b0;padding:7px 10px;border-radius:999px;font-weight:700;margin:4px 4px 0 0}.presentation-card{display:grid;grid-template-columns:60px 1fr auto;align-items:center;gap:15px}.file-icon{width:58px;height:58px;background:var(--ink);color:#fff;border-radius:15px;display:grid;place-items:center;font-weight:800;font-size:.8rem;text-transform:uppercase}.presentation-card h3{margin:0 0 4px}.presentation-card p{margin:0;color:#777;font-size:.9rem}.actions{display:flex;gap:8px;flex-wrap:wrap}.empty{padding:44px 20px;text-align:center;background:#fff;border:2px dashed #d7d7d7;border-radius:18px;color:#686868}.upload-card{border-top:7px solid var(--yellow)}
.admin-table{width:100%;border-collapse:collapse}.admin-table th,.admin-table td{text-align:left;padding:13px 10px;border-bottom:1px solid #e8e8e8;vertical-align:middle}.admin-table th{font-size:.84rem;text-transform:uppercase;color:#777}.table-wrap{overflow-x:auto}.check-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:10px}.check-item{display:flex;grid-template-columns:none;align-items:center;gap:8px;background:var(--pale);padding:10px;border-radius:10px}.check-item input{width:18px;min-height:auto}
.tv-screen{background:var(--ink);color:#fff;min-height:100vh;overflow-x:hidden}.tv-screen .page-shell{width:min(1500px,calc(100% - 7vw));margin:0 auto;padding:4vh 0 6vh}.tv-top{display:flex;align-items:center;justify-content:space-between;gap:25px;margin-bottom:4vh}.tv-brand{display:flex;align-items:center;gap:22px}.tv-brand img{width:clamp(78px,8vw,128px);height:clamp(78px,8vw,128px);border-radius:50%;object-fit:cover}.tv-brand h1{font-size:clamp(2rem,4vw,4.5rem);margin:0}.tv-brand p{font-size:clamp(1rem,1.6vw,1.5rem);margin:8px 0 0;color:#d6d6d6}.teacher-link{color:#fff;text-decoration:none;border:2px solid #555;padding:14px 18px;border-radius:14px;font-weight:700}.tv-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:clamp(14px,2vw,28px)}.tv-tile{min-height:clamp(150px,18vh,230px);border:4px solid transparent;border-radius:24px;background:#fff;color:var(--ink);padding:24px;text-decoration:none;display:flex;flex-direction:column;justify-content:space-between;box-shadow:0 10px 28px rgba(0,0,0,.25);transition:.12s ease}.tv-tile strong{font-size:clamp(1.5rem,2.5vw,3rem);line-height:1}.tv-tile span{font-size:clamp(.95rem,1.3vw,1.25rem);color:#686868}.tv-tile.open{background:var(--yellow)}.tv-tile:focus,.tv-action:focus{outline:none;border-color:var(--yellow);transform:scale(1.045);box-shadow:0 0 0 7px rgba(254,222,1,.22),0 12px 35px rgba(0,0,0,.4)}.tv-tile.open:focus{border-color:#fff}.tv-pin{width:min(600px,100%);margin:9vh auto 0;text-align:center}.tv-pin img{width:130px;height:130px;object-fit:cover;border-radius:50%}.tv-pin input{text-align:center;font-size:2.1rem;letter-spacing:.35em;height:68px;margin:14px 0}.tv-actions{display:grid;grid-template-columns:1fr 1fr;gap:14px}.tv-action{border:4px solid transparent;border-radius:16px;background:var(--yellow);padding:17px;font-size:1.15rem;font-weight:800;cursor:pointer;text-decoration:none;color:var(--ink)}.tv-action.secondary{background:#fff}.tv-presentations{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:22px}.tv-deck{min-height:170px}.tv-deck .kind{display:inline-block;color:#fff;background:var(--red);border-radius:999px;padding:6px 10px;font-size:.85rem;font-weight:800}
.viewer-screen{background:#050505;color:#fff;min-height:100vh;overflow:hidden}.viewer-screen .page-shell{width:100%;height:100vh;margin:0}.viewer-stage{width:100%;height:calc(100% - 104px);display:grid;place-items:center;position:relative;cursor:pointer}.viewer-stage img,.viewer-stage video{max-width:100%;max-height:100%;width:auto;height:auto}.viewer-stage embed{width:100%;height:100%;border:0}.viewer-exit{position:fixed;z-index:5;top:16px;left:16px;background:rgba(0,0,0,.72);color:#fff;text-decoration:none;padding:11px 15px;border-radius:11px;opacity:.32}.viewer-exit:focus,.viewer-exit:hover{opacity:1;outline:4px solid var(--yellow)}.viewer-notice{position:fixed;z-index:9;left:50%;top:24px;transform:translate(-50%,-18px);max-width:min(700px,calc(100% - 120px));padding:14px 18px;border-radius:14px;background:var(--yellow);color:var(--ink);font-weight:800;text-align:center;opacity:0;pointer-events:none;transition:.2s}.viewer-notice.visible{opacity:1;transform:translate(-50%,0)}.viewer-controls{position:fixed;z-index:8;inset:auto 0 0;min-height:104px;display:grid;grid-template-columns:minmax(180px,1fr) auto;align-items:center;gap:24px;padding:14px 24px;background:rgba(18,18,18,.97);border-top:1px solid #363636}.viewer-info{display:grid;gap:5px}.viewer-title{font-size:1.05rem;font-weight:800}.viewer-info #counter{color:#bdbdbd}.viewer-buttons{display:flex;align-items:center;gap:12px}.viewer-button{min-width:130px;min-height:62px;border:4px solid transparent;border-radius:15px;background:#343434;color:#fff;padding:12px 17px;text-decoration:none;font-weight:800;font-size:1.05rem;display:inline-flex;align-items:center;justify-content:center;gap:9px;cursor:pointer}.viewer-button.primary{background:var(--yellow);color:var(--ink);min-width:145px}.viewer-button.exit-button{background:var(--red);min-width:95px}.viewer-button:focus{outline:none;border-color:#fff;box-shadow:0 0 0 6px rgba(254,222,1,.45);transform:scale(1.045)}.viewer-button:disabled{opacity:.32;cursor:not-allowed;transform:none;box-shadow:none}
@media(max-width:900px){.tv-grid{grid-template-columns:repeat(3,minmax(0,1fr))}.tv-presentations{grid-template-columns:repeat(2,minmax(0,1fr))}.three-col{grid-template-columns:1fr 1fr}.check-grid{grid-template-columns:1fr 1fr}}
@media(max-width:680px){.app-header{align-items:flex-start}.app-header nav{display:grid;gap:8px;text-align:right}.page-shell{width:min(100% - 22px,1180px);margin-top:22px}.two-col,.three-col,.form-grid{grid-template-columns:1fr}.form-grid .wide{grid-column:auto}.section-head{align-items:flex-start;flex-direction:column}.presentation-card{grid-template-columns:52px 1fr}.presentation-card .actions{grid-column:1/-1}.check-grid{grid-template-columns:1fr}.tv-grid,.tv-presentations{grid-template-columns:repeat(2,minmax(0,1fr))}.tv-top{align-items:flex-start}.teacher-link{display:none}.tv-tile{min-height:125px}.tv-brand img{width:70px;height:70px}}
@media(max-width:430px){.tv-grid{grid-template-columns:1fr 1fr;gap:10px}.tv-tile{padding:16px;border-radius:18px}.tv-brand h1{font-size:1.8rem}.tv-brand p{font-size:.9rem}}
@media(max-width:760px){.viewer-stage{height:calc(100% - 148px)}.viewer-controls{min-height:148px;grid-template-columns:1fr;padding:10px;gap:8px}.viewer-info{text-align:center}.viewer-buttons{display:grid;grid-template-columns:repeat(4,1fr);gap:7px}.viewer-button{min-width:0;min-height:54px;padding:8px;font-size:.88rem}.viewer-button.primary{min-width:0}.viewer-notice{max-width:calc(100% - 30px);top:12px}}