:root{--indigo:#3730a3;--indigo-dark:#211b76;--coral:#fb7185;--ink:#1e2140;--muted:#777b96;--line:#e6e7f0;--canvas:#f7f7fb;--card:#fff;--green:#1da878;--amber:#d98b26;--red:#d9576a;--shadow:0 18px 55px rgba(40,40,90,.08);font-family:Manrope,system-ui,sans-serif;color:var(--ink);background:var(--canvas);font-synthesis:none}*{box-sizing:border-box}body{margin:0;background:var(--canvas);color:var(--ink)}button,input,textarea,select{font:inherit}button{cursor:pointer;border:0}.hidden{display:none!important}.app-shell{min-height:100vh}.auth-view{min-height:100vh;display:grid;grid-template-columns:minmax(360px,43%) 1fr;background:var(--indigo)}.auth-visual{padding:42px 8vw 46px 7vw;color:#fff;display:flex;flex-direction:column;justify-content:space-between;background:radial-gradient(circle at 20% 20%,rgba(251,113,133,.2),transparent 28%),linear-gradient(145deg,#3730a3,#272178)}.brand{display:inline-flex;align-items:center;gap:10px;text-decoration:none;color:var(--ink);font-weight:800;font-size:20px;letter-spacing:-.06em}.brand img{width:31px;height:31px;border-radius:10px}.brand>span>span{color:var(--coral)}.brand-light{color:#fff}.auth-visual-copy{max-width:470px;margin-top:auto;margin-bottom:auto}.eyebrow{margin:0 0 12px;color:var(--muted);font-size:10px;font-weight:800;letter-spacing:.17em}.eyebrow-light{color:#c7c4ff}.auth-visual h1{font-size:clamp(52px,6vw,88px);line-height:.96;letter-spacing:-.08em;margin:0 0 28px}.auth-visual h1 em{font-style:normal;color:#ff9baa}.auth-visual-copy>p:last-child{font-size:17px;line-height:1.7;color:#d8d5ff;max-width:350px}.visual-note{display:flex;align-items:center;gap:10px;color:#cbc8f6;font-size:12px;font-weight:700}.note-dot,.online-dot{width:8px;height:8px;border-radius:50%;display:inline-block;background:#62dfb3;box-shadow:0 0 0 5px rgba(98,223,179,.12)}.auth-panel{background:var(--canvas);display:flex;align-items:center;justify-content:center;padding:40px}.auth-card{width:min(430px,100%)}.mobile-brand{display:none}.auth-heading h2{font-size:30px;letter-spacing:-.06em;margin:0 0 8px}.auth-heading p:last-child{color:var(--muted);margin:0 0 28px}.auth-tabs{display:flex;border-bottom:1px solid var(--line);margin-bottom:25px;gap:24px}.auth-tab{background:none;color:var(--muted);padding:0 0 14px;font-weight:800;font-size:13px;position:relative}.auth-tab.active{color:var(--indigo)}.auth-tab.active:after{content:"";position:absolute;bottom:-1px;left:0;right:0;height:3px;border-radius:4px;background:var(--coral)}.form-stack{display:flex;flex-direction:column;gap:16px}.field{display:flex;flex-direction:column;gap:7px;color:#555a78;font-size:12px;font-weight:800}.field input,.field textarea,.field select{width:100%;border:1px solid #dfe1eb;border-radius:11px;background:#fff;color:var(--ink);padding:13px 14px;outline:none;resize:vertical;font-size:13px;font-weight:500;transition:.2s}.field input:focus,.field textarea:focus,.field select:focus{border-color:var(--indigo);box-shadow:0 0 0 4px rgba(55,48,163,.1)}.button{border-radius:11px;padding:13px 17px;display:inline-flex;align-items:center;justify-content:center;gap:10px;font-size:12px;font-weight:800;transition:.2s}.button-primary{background:var(--indigo);color:#fff;box-shadow:0 9px 18px rgba(55,48,163,.2)}.button-primary:hover{background:var(--indigo-dark);transform:translateY(-1px)}.button-full{width:100%;margin-top:5px}.button-arrow{font-size:17px;line-height:10px}.demo-hint{margin-top:22px;padding:13px 14px;background:#eeefff;color:#61638b;border-radius:11px;font-size:10px;line-height:1.5;display:flex;gap:8px}.spark{color:var(--coral);font-size:17px}.form-message{margin-top:12px;color:var(--red);font-size:12px}.dashboard-view{display:flex;min-height:100vh}.sidebar{width:246px;flex:0 0 246px;background:#fff;border-right:1px solid var(--line);padding:28px 16px 18px;display:flex;flex-direction:column}.sidebar-top{padding:0 10px}.sidebar-profile{display:flex;align-items:center;gap:10px;margin:42px 8px 32px;position:relative}.sidebar-profile strong,.topbar-user strong{font-size:12px;display:block}.sidebar-profile span:not(.online-dot),.topbar-user span{display:block;color:var(--muted);font-size:10px;margin-top:3px}.sidebar-profile .online-dot{margin-left:auto;width:7px;height:7px}.avatar{background:#ffe1e5;color:#bd4f65;width:38px;height:38px;border-radius:13px;display:grid;place-items:center;font-weight:800;font-size:12px}.avatar-small{width:32px;height:32px;border-radius:10px;font-size:10px}.side-nav{display:flex;flex-direction:column;gap:3px}.nav-label{font-size:9px;font-weight:800;letter-spacing:.17em;color:#adafc0;padding:0 12px;margin:0 0 10px}.nav-label-lower{margin-top:28px}.nav-item{display:flex;align-items:center;gap:11px;background:none;color:#747891;padding:11px 12px;border-radius:9px;text-align:left;font-weight:700;font-size:11px}.nav-item:hover{background:#f4f3ff;color:var(--indigo)}.nav-item.active{background:#f0efff;color:var(--indigo)}.nav-icon{font-size:17px;width:17px;text-align:center}.nav-count{margin-left:auto;background:#ffe1e5;color:#bd4f65;padding:2px 6px;border-radius:9px;font-size:9px}.sidebar-bottom{margin-top:auto}.upgrade-card{background:linear-gradient(145deg,#3730a3,#5952c8);color:#fff;border-radius:13px;padding:16px;margin:0 4px 17px}.upgrade-icon{display:block;color:#ff9baa;font-size:20px;margin-bottom:12px}.upgrade-card strong{font-size:11px}.upgrade-card p{color:#d8d6ff;font-size:10px;line-height:1.5;margin:6px 0 0}.signout-button{background:none;color:#8a8da3;font-size:11px;font-weight:800;padding:9px 12px}.signout-button span{font-size:18px;margin-right:8px}.main-content{flex:1;min-width:0}.topbar{height:84px;background:#fff;border-bottom:1px solid var(--line);display:flex;align-items:center;justify-content:space-between;padding:0 42px}.breadcrumbs{display:flex;gap:10px;align-items:center;color:#b0b2c0;font-size:11px;font-weight:600}.breadcrumbs b{color:#d8d9e3}.breadcrumbs strong{color:var(--ink)}.topbar-actions{display:flex;align-items:center;gap:23px}.icon-button{background:none;color:#83879e;font-size:20px;position:relative}.notification-button span{width:6px;height:6px;background:var(--coral);border-radius:50%;position:absolute;right:0;top:0}.topbar-user{display:flex;align-items:center;gap:9px}.content-wrap{max-width:1260px;padding:48px 6vw 70px}.welcome-row,.section-topline,.section-heading-row{display:flex;justify-content:space-between;align-items:flex-end;gap:20px}.welcome-row h2,.section-topline h2{font-size:32px;letter-spacing:-.07em;margin:0 0 8px}.welcome-row h2 span{color:var(--coral);font-size:23px;vertical-align:top}.section-subtitle{margin:0;color:var(--muted);font-size:12px}.metric-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:14px;margin:40px 0 51px}.metric-card{background:#fff;border:1px solid var(--line);border-radius:14px;padding:20px 20px 18px;box-shadow:0 8px 22px rgba(50,52,100,.03)}.metric-card.highlight{background:var(--indigo);color:#fff;border-color:var(--indigo)}.metric-card .metric-label{color:#8e91a9;font-size:10px;font-weight:800;letter-spacing:.06em}.metric-card.highlight .metric-label{color:#c9c7f4}.metric-value{font-size:30px;letter-spacing:-.08em;font-weight:800;margin:12px 0 4px}.metric-note{color:#9194a9;font-size:10px}.metric-card.highlight .metric-note{color:#ceccf4}.metric-trend{color:var(--green);font-weight:800}.section-heading-row{align-items:center;margin-bottom:17px}.section-heading-row h3{font-size:19px;letter-spacing:-.05em;margin:0}.text-button{background:none;color:var(--indigo);font-size:11px;font-weight:800}.text-button span{font-size:16px;margin-left:5px}.overview-grid{display:grid;grid-template-columns:1.2fr .8fr;gap:16px}.panel-card{background:#fff;border:1px solid var(--line);border-radius:14px;padding:23px}.focus-card{background:var(--indigo);color:#fff;min-height:185px;position:relative;overflow:hidden}.focus-card:after{content:"";position:absolute;width:230px;height:230px;border:1px solid rgba(255,255,255,.14);border-radius:50%;right:-76px;bottom:-114px;box-shadow:0 0 0 22px rgba(255,255,255,.04),0 0 0 45px rgba(255,255,255,.03)}.focus-card .eyebrow{color:#c7c4ff}.focus-card h3{font-size:22px;letter-spacing:-.06em;margin:12px 0 7px;max-width:280px}.focus-card p{color:#d9d7ff;font-size:11px;max-width:270px;line-height:1.6}.focus-card .button{background:#fff;color:var(--indigo);margin-top:12px;position:relative;z-index:1}.deadline-card{min-height:185px}.deadline-top{display:flex;justify-content:space-between;align-items:start}.deadline-top h3{font-size:16px;letter-spacing:-.04em;margin:0 0 5px}.deadline-top p{margin:0;color:var(--muted);font-size:10px}.deadline-icon{background:#fff0f2;color:var(--coral);width:35px;height:35px;border-radius:10px;display:grid;place-items:center;font-size:17px}.deadline-row{display:flex;align-items:center;gap:12px;margin-top:27px}.deadline-date{font-size:10px;color:var(--muted)}.deadline-bar{flex:1;height:5px;background:#f0f0f5;border-radius:10px;overflow:hidden}.deadline-bar span{display:block;width:68%;height:100%;background:var(--coral);border-radius:10px}.course-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;margin-top:32px}.course-card{background:#fff;border:1px solid var(--line);border-radius:14px;padding:20px;min-height:200px;display:flex;flex-direction:column;transition:.2s}.course-card:hover{transform:translateY(-2px);box-shadow:var(--shadow)}.course-card-top{display:flex;justify-content:space-between;align-items:start}.course-code{color:var(--indigo);background:#eeefff;border-radius:7px;padding:5px 8px;font-size:9px;font-weight:800;letter-spacing:.08em}.course-mark{width:35px;height:35px;background:#fff0f2;border-radius:11px;display:grid;place-items:center;color:var(--coral);font-weight:800}.course-card h3{margin:22px 0 8px;font-size:17px;letter-spacing:-.05em}.course-card p{margin:0;color:var(--muted);font-size:11px;line-height:1.65}.course-card-bottom{margin-top:auto;padding-top:20px;display:flex;align-items:center;justify-content:space-between}.course-meta{font-size:10px;color:var(--muted)}.enroll-button{background:none;color:var(--indigo);font-size:10px;font-weight:800}.enroll-button.enrolled{color:var(--green)}.section-topline{align-items:end}.search-box{display:flex;align-items:center;gap:8px;background:#fff;border:1px solid var(--line);border-radius:9px;padding:0 12px;color:#a0a2b5}.search-box input{border:0;outline:0;padding:11px 0;font-size:11px;width:180px}.filter-pills{display:flex;gap:7px}.filter-pill{background:#fff;border:1px solid var(--line);border-radius:8px;padding:9px 12px;color:var(--muted);font-size:10px;font-weight:800}.filter-pill.active{background:#eeefff;border-color:#dddafe;color:var(--indigo)}.assignment-list{margin-top:32px;display:flex;flex-direction:column;gap:10px}.assignment-row{background:#fff;border:1px solid var(--line);border-radius:13px;padding:17px 19px;display:grid;grid-template-columns:38px 1fr auto auto;align-items:center;gap:15px}.assignment-mark{width:36px;height:36px;border-radius:10px;background:#eeefff;color:var(--indigo);display:grid;place-items:center;font-size:15px}.assignment-row h3{font-size:13px;margin:0 0 5px;letter-spacing:-.02em}.assignment-row p{margin:0;color:var(--muted);font-size:10px}.assignment-course{font-size:9px;color:var(--indigo);font-weight:800;background:#f3f3ff;border-radius:6px;padding:5px 7px}.status-badge,.role-badge{border-radius:7px;font-size:9px;font-weight:800;padding:6px 9px;white-space:nowrap}.status-pending{background:#fff2db;color:var(--amber)}.status-submitted{background:#e4f8f0;color:var(--green)}.status-overdue{background:#ffe7eb;color:var(--red)}.empty-state{background:#fff;border:1px dashed #d9dbe7;border-radius:14px;padding:42px;text-align:center;color:var(--muted);grid-column:1/-1}.empty-state strong{display:block;color:var(--ink);font-size:14px;margin-bottom:7px}.empty-state p{font-size:11px;margin:0}.settings-card{background:#fff;border:1px solid var(--line);border-radius:14px;padding:30px;display:flex;gap:18px;align-items:center;margin-top:32px;max-width:520px}.settings-card h3{margin:4px 0;font-size:20px}.settings-card p:not(.eyebrow){margin:0 0 12px;color:var(--muted);font-size:12px}.role-badge{background:#eeefff;color:var(--indigo)}.modal{position:fixed;inset:0;z-index:10;display:grid;place-items:center;padding:20px}.modal-backdrop{position:absolute;inset:0;background:rgba(29,28,60,.52);backdrop-filter:blur(3px)}.modal-card{background:#fff;border-radius:17px;width:min(480px,100%);padding:30px;position:relative;box-shadow:0 25px 80px rgba(26,25,70,.24)}.modal-card h2{font-size:26px;letter-spacing:-.07em;margin:0 0 7px}.modal-subtitle{color:var(--muted);font-size:12px;margin:0 0 25px}.modal-close{position:absolute;right:20px;top:18px;background:#f3f3f8;border-radius:50%;width:28px;height:28px;color:#6d7089;font-size:20px}.toast{position:fixed;right:25px;bottom:25px;background:#fff;border:1px solid var(--line);box-shadow:var(--shadow);border-radius:11px;padding:12px 15px;display:flex;align-items:center;gap:9px;font-size:11px;font-weight:800;transform:translateY(130px);opacity:0;transition:.3s;z-index:20}.toast.show{transform:translateY(0);opacity:1}.toast-mark{width:20px;height:20px;display:grid;place-items:center;border-radius:50%;background:#e4f8f0;color:var(--green)}.mobile-only{display:none}@media(max-width:950px){.auth-view{grid-template-columns:1fr}.auth-visual{display:none}.mobile-brand{display:block;margin-bottom:45px}.auth-panel{padding:32px 24px}.sidebar{width:210px;flex-basis:210px}.content-wrap{padding:40px 28px}.metric-grid{grid-template-columns:repeat(2,1fr)}.course-grid{grid-template-columns:repeat(2,1fr)}}@media(max-width:700px){.mobile-only{display:inline-block}.dashboard-view{display:block}.sidebar{position:fixed;z-index:8;inset:0 auto 0 0;width:260px;transform:translateX(-102%);transition:.25s;box-shadow:var(--shadow)}.sidebar.open{transform:translateX(0)}.topbar{height:68px;padding:0 18px;gap:14px}.breadcrumbs{font-size:10px}.topbar-user-copy{display:none}.topbar-actions{gap:14px}.content-wrap{padding:32px 18px 50px}.welcome-row,.section-topline,.section-heading-row{display:block}.welcome-row .button,.section-topline .search-box,.section-topline .filter-pills{margin-top:20px}.welcome-row h2,.section-topline h2{font-size:28px}.metric-grid{gap:9px;margin:30px 0 38px}.metric-card{padding:15px}.metric-value{font-size:24px}.metric-note{font-size:9px}.overview-grid{grid-template-columns:1fr}.course-grid{grid-template-columns:1fr;margin-top:24px}.assignment-row{grid-template-columns:34px 1fr auto;gap:11px;padding:14px}.assignment-course{display:none}.assignment-row p{white-space:nowrap;overflow:hidden;text-overflow:ellipsis;max-width:160px}.section-heading-row .text-button{margin-top:13px;padding:0}.auth-heading h2{font-size:27px}}

/* Shared course access and account polish */
.google-button{width:100%;display:flex;align-items:center;justify-content:center;gap:10px;border:1px solid var(--line);background:#fff;color:var(--ink);border-radius:11px;padding:12px 15px;font-size:12px;font-weight:800;transition:.2s}.google-button:hover{border-color:#c5c4ef;background:#fbfbff;transform:translateY(-1px)}.google-mark{width:22px;height:22px;border-radius:50%;display:grid;place-items:center;background:#fff;font-family:Arial,sans-serif;font-size:14px;font-weight:800;color:#4285f4;border:1px solid #e4e5eb}.auth-divider{display:flex;align-items:center;gap:11px;margin:18px 0;color:#b1b3c1;font-size:10px;font-weight:700}.auth-divider:before,.auth-divider:after{content:"";height:1px;background:var(--line);flex:1}.section-actions{display:flex;align-items:center;gap:10px}.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:14px}.topic-divider{border-top:1px solid var(--line);padding-top:18px;margin-top:2px;color:var(--indigo);font-size:9px;font-weight:800;letter-spacing:.16em}.field small{font-weight:600;color:#a0a2b4}.field-hint{font-size:10px;color:#9093a8;font-weight:500;line-height:1.45;margin-top:-2px}.modal-card-wide{width:min(650px,100%)}.join-modal-card{width:min(430px,100%)}.join-modal-icon{width:45px;height:45px;border-radius:14px;background:#eeefff;color:var(--indigo);display:grid;place-items:center;font-size:22px;margin-bottom:20px}.role-modal-card{width:min(550px,100%)}.role-choice-grid{display:grid;grid-template-columns:1fr 1fr;gap:12px}.role-choice{display:flex;flex-direction:column;align-items:flex-start;text-align:left;gap:6px;padding:17px;border:1px solid var(--line);background:#fff;border-radius:12px;color:var(--ink);transition:.2s}.role-choice:hover{border-color:#b9b6f5;background:#f7f6ff;transform:translateY(-1px)}.role-choice span{font-size:22px;color:var(--coral)}.role-choice strong{font-size:13px}.role-choice small{font-size:10px;line-height:1.5;color:var(--muted)}.course-card{overflow:hidden}.course-media{height:105px;margin:-20px -20px 18px;background:linear-gradient(135deg,#eeefff,#ffe6ea);overflow:hidden;position:relative}.course-media img{display:block;width:100%;height:100%;object-fit:cover}.course-media-placeholder{display:flex;align-items:center;justify-content:center;gap:8px;color:var(--indigo)}.course-media-placeholder span{font-size:24px;color:var(--coral)}.course-media-placeholder small{font-size:9px;font-weight:800;letter-spacing:.15em}.course-media-compact{height:90px}.topic-line{display:flex;align-items:center;gap:7px;color:#676b87;font-size:10px;font-weight:700;margin-top:16px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.topic-line-dot{width:6px;height:6px;background:var(--coral);border-radius:50%;flex:0 0 auto}.join-card{background:linear-gradient(145deg,#f0efff,#fff0f2);border:1px solid #e4e1ff;border-radius:14px;padding:20px;min-height:200px;display:flex;flex-direction:column;align-items:flex-start}.join-card-mark{width:35px;height:35px;border-radius:11px;background:#fff;color:var(--indigo);display:grid;place-items:center;font-size:18px;margin-bottom:20px}.join-card h3{font-size:17px;letter-spacing:-.05em;margin:0 0 8px}.join-card p:not(.eyebrow){font-size:11px;color:var(--muted);line-height:1.6;margin:0}.join-card .button{margin-top:auto}.course-detail-header{display:grid;grid-template-columns:1fr 190px;gap:24px;align-items:start}.course-detail-header h2{font-size:29px;letter-spacing:-.07em;margin:0 0 7px}.detail-media{height:145px;border-radius:13px;overflow:hidden;background:#eeefff}.detail-media img{width:100%;height:100%;object-fit:cover}.topic-content{margin-top:22px;background:#f7f7fb;border:1px solid var(--line);border-radius:12px;padding:20px;color:#515674;font-size:13px;line-height:1.8;white-space:pre-line}.detail-course-footer{display:flex;justify-content:space-between;gap:16px;margin-top:18px;color:var(--muted);font-size:10px;font-weight:800}.firebase-config-live{color:var(--green)}
@media(max-width:760px){.section-actions{display:block}.section-actions .search-box,.section-actions .button{width:100%;margin-top:12px}.form-grid{grid-template-columns:1fr}.course-detail-header{grid-template-columns:1fr}.detail-media{height:160px;grid-row:1;order:-1}.role-choice-grid{grid-template-columns:1fr}.modal-card{padding:24px}.course-media{height:120px}}

/* White + orange direction */
:root{--indigo:#ef6b3b;--indigo-dark:#c84e27;--coral:#f59b35;--ink:#2a211d;--muted:#82766f;--line:#f0e2dc;--canvas:#fffaf7;--green:#1b9a6c;--shadow:0 18px 55px rgba(118,58,32,.10)}
.auth-view{background:#ef6b3b}.auth-visual{background:radial-gradient(circle at 20% 20%,rgba(255,255,255,.18),transparent 28%),linear-gradient(145deg,#ef6b3b,#cf522b)}.auth-visual h1 em{color:#fff1db}.auth-visual-copy>p:last-child{color:#fff0e7}.eyebrow-light,.visual-note{color:#ffe0cf}.brand>span>span{color:#ef6b3b}.auth-tab.active{color:#ef6b3b}.button-primary{background:#ef6b3b;box-shadow:0 9px 18px rgba(239,107,59,.22)}.button-primary:hover{background:#c84e27}.button:focus-visible,.field input:focus,.field textarea:focus,.field select:focus{border-color:#ef6b3b;box-shadow:0 0 0 4px rgba(239,107,59,.14)}.demo-hint{background:#fff0e7;color:#795d50}.metric-card.highlight,.focus-card{background:#ef6b3b;border-color:#ef6b3b}.metric-card.highlight .metric-label,.metric-card.highlight .metric-note,.focus-card .eyebrow{color:#fff0e7}.nav-item:hover,.nav-item.active,.filter-pill.active{background:#fff0e7;color:#d4572c}.course-code,.assignment-course{color:#d4572c;background:#fff0e7}.course-mark,.deadline-icon{background:#fff1e6;color:#ef6b3b}.join-card{background:linear-gradient(145deg,#fff0e7,#fffaf7);border-color:#f4d4c5}.join-card-mark,.join-modal-icon{color:#ef6b3b;background:#fff}.topic-divider{color:#d4572c}.focus-card .button{color:#d4572c}.modal{overflow-y:auto;align-items:flex-start}.modal-card{max-height:calc(100vh - 40px);overflow-y:auto;margin:auto;padding-bottom:34px}.publish-course-button{margin-top:12px;min-height:48px}.course-media-placeholder{background:linear-gradient(135deg,#fff0e7,#fff7ef);color:#ef6b3b}.role-choice-grid{display:none}

/* Assignment submission controls */
.assignment-status{display:flex;flex-direction:column;align-items:flex-end;gap:7px;min-width:190px}.assignment-status>p{margin:0;color:var(--muted);font-size:9px}.submission-control{display:flex;flex-wrap:wrap;justify-content:flex-end;align-items:center;gap:7px;max-width:250px}.submission-control input{max-width:150px;font-size:9px;color:var(--muted)}.submission-control small{width:100%;color:var(--muted);font-size:8px}.submit-file-button{color:#d4572c!important}.submission-file-link{max-width:180px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;color:#d4572c;font-size:9px;font-weight:800;text-decoration:none}.submission-file-link:hover{text-decoration:underline}.submission-file-name{max-width:180px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;color:var(--muted);font-size:9px}@media(max-width:700px){.assignment-status{align-items:flex-start;grid-column:2/-1;min-width:0}.submission-control{justify-content:flex-start;max-width:none}.submission-control input{max-width:145px}.submission-file-link,.submission-file-name{max-width:145px}}