@layer theme{:root,:host{--font-sans:-apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", "Noto Sans", Arial, sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol", "Noto Color Emoji";--font-mono:ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;--default-font-family:var(--font-sans);--default-mono-font-family:var(--font-mono)}}@layer base{*,:after,:before,::backdrop{box-sizing:border-box;border:0 solid;margin:0;padding:0}::file-selector-button{box-sizing:border-box;border:0 solid;margin:0;padding:0}html,:host{-webkit-text-size-adjust:100%;tab-size:4;line-height:1.5;font-family:var(--default-font-family,-apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", "Noto Sans", Arial, sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol", "Noto Color Emoji");font-feature-settings:var(--default-font-feature-settings,normal);font-variation-settings:var(--default-font-variation-settings,normal);-webkit-tap-highlight-color:transparent}hr{height:0;color:inherit;border-top-width:1px}abbr:where([title]){-webkit-text-decoration:underline dotted;text-decoration:underline dotted}h1,h2,h3,h4,h5,h6{font-size:inherit;font-weight:inherit}a{color:inherit;-webkit-text-decoration:inherit;-webkit-text-decoration:inherit;-webkit-text-decoration:inherit;-webkit-text-decoration:inherit;text-decoration:inherit}b,strong{font-weight:bolder}code,kbd,samp,pre{font-family:var(--default-mono-font-family,ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace);font-feature-settings:var(--default-mono-font-feature-settings,normal);font-variation-settings:var(--default-mono-font-variation-settings,normal);font-size:1em}small{font-size:80%}sub,sup{vertical-align:baseline;font-size:75%;line-height:0;position:relative}sub{bottom:-.25em}sup{top:-.5em}table{text-indent:0;border-color:inherit;border-collapse:collapse}:-moz-focusring:where(:not(iframe)){outline:auto}progress{vertical-align:baseline}summary{display:list-item}ol,ul,menu{list-style:none}img,svg,video,canvas,audio,iframe,embed,object{vertical-align:middle;display:block}img,video{max-width:100%;height:auto}button,input,select,optgroup,textarea{font:inherit;font-feature-settings:inherit;font-variation-settings:inherit;letter-spacing:inherit;color:inherit;opacity:1;background-color:#0000;border-radius:0}::file-selector-button{font:inherit;font-feature-settings:inherit;font-variation-settings:inherit;letter-spacing:inherit;color:inherit;opacity:1;background-color:#0000;border-radius:0}:where(select:is([multiple],[size])) optgroup{font-weight:bolder}:where(select:is([multiple],[size])) optgroup option{padding-inline-start:20px}::file-selector-button{margin-inline-end:4px}::placeholder{opacity:1}@supports (not ((-webkit-appearance:-apple-pay-button))) or (contain-intrinsic-size:1px){::placeholder{color:currentColor}@supports (color:color-mix(in lab, red, red)){::placeholder{color:color-mix(in oklab, currentcolor 50%, transparent)}}}textarea{resize:vertical}::-webkit-search-decoration{-webkit-appearance:none}::-webkit-date-and-time-value{min-height:1lh;text-align:inherit}::-webkit-datetime-edit{display:inline-flex}::-webkit-datetime-edit-fields-wrapper{padding:0}::-webkit-datetime-edit{padding-block:0}::-webkit-datetime-edit-year-field{padding-block:0}::-webkit-datetime-edit-month-field{padding-block:0}::-webkit-datetime-edit-day-field{padding-block:0}::-webkit-datetime-edit-hour-field{padding-block:0}::-webkit-datetime-edit-minute-field{padding-block:0}::-webkit-datetime-edit-second-field{padding-block:0}::-webkit-datetime-edit-millisecond-field{padding-block:0}::-webkit-datetime-edit-meridiem-field{padding-block:0}::-webkit-calendar-picker-indicator{line-height:1}:-moz-ui-invalid{box-shadow:none}button,input:where([type=button],[type=reset],[type=submit]){appearance:button}::file-selector-button{appearance:button}::-webkit-inner-spin-button{height:auto}::-webkit-outer-spin-button{height:auto}[hidden]:where(:not([hidden=until-found])){display:none!important}}@layer components;@layer utilities{.visible{visibility:visible}.container{width:100%}@media (min-width:40rem){.container{max-width:40rem}}@media (min-width:48rem){.container{max-width:48rem}}@media (min-width:64rem){.container{max-width:64rem}}@media (min-width:80rem){.container{max-width:80rem}}@media (min-width:96rem){.container{max-width:96rem}}.block{display:block}.contents{display:contents}.table{display:table}.h-full{height:100%}.min-h-full{min-height:100%}.antialiased{-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}}:root{--paper:#edf1f3;--surface:#fff;--ink:#13232d;--muted:#55666f;--line:#cdd8dd;--accent:#1d5fa8;--accent-ink:#fff}@media (prefers-color-scheme:dark){:root{--paper:#0d161b;--surface:#14212a;--ink:#e2ebee;--muted:#94a7b0;--line:#26383f;--accent:#6ea8ee;--accent-ink:#0d161b;--lightningcss-light: ;--lightningcss-dark:initial;color-scheme:dark}}body{background:var(--paper);color:var(--ink);margin:0;font-family:Hind Siliguri,Noto Sans Bengali,system-ui,sans-serif}a{color:inherit;text-decoration:none}.auth-page{place-items:center;min-height:100vh;padding:24px;display:grid}.auth-card{background:var(--surface);border:1px solid var(--line);border-radius:16px;gap:14px;width:min(420px,100%);padding:32px 28px;display:grid}.auth-eyebrow,.courses-header .auth-eyebrow{letter-spacing:.08em;text-transform:uppercase;color:var(--muted);margin:0;font-family:ui-monospace,monospace;font-size:12.5px}.auth-card h1,.courses-header h1{margin:0;font-size:clamp(1.8rem,4vw,2.4rem);line-height:1.15}.auth-lede{color:var(--muted);margin:0;line-height:1.6}.auth-error{color:#8a2f1d;background:#fde8e4;border-radius:10px;margin:0;padding:10px 12px;font-size:14.5px}.auth-actions{gap:10px;margin-top:8px;display:grid}.auth-btn{border:1px solid var(--line);background:var(--surface);border-radius:10px;justify-content:center;align-items:center;gap:10px;padding:12px 16px;font-weight:600;display:flex}.auth-btn:hover{border-color:var(--muted)}.auth-btn-github{color:#fff;background:#13232d;border-color:#13232d}.auth-btn-google{color:#13232d;background:#fff}.courses-page{max-width:960px;margin:0 auto;padding:40px 20px 72px}.courses-header{justify-content:space-between;align-items:start;gap:20px;margin-bottom:28px;display:flex}.courses-grid{gap:16px;display:grid}.course-card{border:1px solid var(--line);background:var(--surface);border-radius:14px;gap:8px;padding:22px 20px;display:grid}.course-card:hover{border-color:var(--accent)}.course-card h2{margin:0;font-size:1.45rem}.course-card-eyebrow,.course-card-meta{color:var(--muted);margin:0;font-size:14.5px}.logout-btn{appearance:none;border:1px solid var(--line);color:var(--muted);cursor:pointer;font:inherit;background:0 0;border-radius:10px;padding:8px 14px}.logout-btn:hover{color:var(--ink);border-color:var(--muted)}.course-topbar{border-bottom:1px solid var(--line);justify-content:space-between;align-items:center;padding-block:14px;display:flex}.course-topbar a{color:var(--muted);font-size:14.5px}.course-topbar a:hover{color:var(--ink)}