@import url('https://fonts.googleapis.com/css2?family=Prompt:wght@300;400;500;600;700&display=swap');

:root {
  --school-green-900:#063e30; --school-green-800:#075440; --school-green-700:#0a6b50;
  --school-green-600:#118262; --school-green-100:#dff3eb; --school-green-50:#f0f9f5;
  --school-gold:#d4a72c; --school-gold-soft:#fff5d5;
  --ink:#17231f; --muted:#66756f; --line:#dce7e2; --surface:#fff; --canvas:#f3f7f5;
  --danger:#c43c45; --warning:#b7791f; --info:#277da1;
  --radius-sm:10px; --radius:16px; --radius-lg:24px;
  --shadow-sm:0 3px 12px rgba(6,62,48,.06); --shadow:0 12px 32px rgba(6,62,48,.09);
  --primary:var(--school-green-700); --primary-soft:var(--school-green-100);
  --bg-body:var(--canvas); --bg-card:var(--surface); --text-main:var(--ink); --text-muted:var(--muted);
}

*{box-sizing:border-box} html{scroll-behavior:smooth} body.app-body{margin:0;min-height:100vh;font-family:"Prompt",Tahoma,sans-serif;color:var(--ink);background:var(--canvas);background-image:radial-gradient(circle at 100% 0,rgba(17,130,98,.08),transparent 26%),linear-gradient(180deg,#f8fbf9 0,#f3f7f5 38%)}
a{color:var(--school-green-700);text-underline-offset:3px} a:hover{color:var(--school-green-900)}
.app-main{min-height:calc(100vh - 150px)} .app-main>.container-xxl{padding-top:2rem!important;padding-bottom:3rem!important}

/* Header */
.app-navbar{background:rgba(255,255,255,.96);backdrop-filter:blur(14px);border-top:4px solid var(--school-gold);border-bottom:1px solid var(--line);box-shadow:0 5px 22px rgba(6,62,48,.06);padding:.55rem 0}
.app-navbar .container-xxl{display:flex;align-items:center;gap:.65rem}.app-navbar .navbar-collapse{min-width:0}
.school-brand{display:flex;align-items:center;gap:.68rem;text-decoration:none;flex:0 0 auto}.brand-logo{width:44px;height:44px;display:grid;place-items:center;overflow:hidden;border-radius:13px;background:var(--school-green-700);box-shadow:0 7px 17px rgba(10,107,80,.22)}.brand-logo img{width:100%;height:100%;object-fit:contain;background:#fff;padding:3px}.brand-logo.logo-fallback:after{content:'ร.ร.';color:#fff;font-weight:700}.brand-copy{display:flex;flex-direction:column;line-height:1.15;min-width:0}.brand-copy strong{font-size:.96rem;color:var(--school-green-900);white-space:nowrap}.brand-copy small{font-size:.66rem;color:var(--muted);margin-top:.16rem;white-space:nowrap}
.app-menu{gap:.14rem;flex:1 1 auto;min-width:0;justify-content:flex-start;flex-wrap:nowrap;overflow-x:auto;overflow-y:hidden;scrollbar-width:thin;padding-bottom:.12rem}.app-menu::-webkit-scrollbar{height:5px}.app-menu::-webkit-scrollbar-thumb{background:#cbd8d3;border-radius:999px}.app-menu .nav-item{flex:0 0 auto}.app-menu .nav-link{display:flex;align-items:center;flex-wrap:nowrap;gap:.36rem;border-radius:11px;padding:.56rem .58rem!important;color:#405049!important;font-size:.82rem;font-weight:500;line-height:1.15;white-space:nowrap;min-height:44px}.app-menu .nav-link span{display:inline-block;white-space:nowrap!important;word-break:normal;overflow-wrap:normal;min-width:max-content}.app-menu .nav-link:hover{background:var(--school-green-50);color:var(--school-green-700)!important}.app-menu .nav-link.active{background:var(--school-green-100);color:var(--school-green-800)!important;font-weight:600}.app-menu i{width:16px;text-align:center;flex:0 0 auto}
.nav-account{display:flex;align-items:center;gap:.55rem;padding-left:.8rem;border-left:1px solid var(--line)}.user-avatar{width:37px;height:37px;display:grid;place-items:center;border-radius:50%;background:linear-gradient(135deg,var(--school-gold),#e9c45d);color:#fff;font-weight:700}.account-copy{display:flex;flex-direction:column;max-width:130px;line-height:1.2}.account-copy strong{white-space:nowrap;overflow:hidden;text-overflow:ellipsis;font-size:.78rem}.account-copy small{font-size:.65rem;color:var(--muted)}.logout-button{border:0;background:transparent;color:#78857f;width:34px;height:34px;border-radius:9px}.logout-button:hover{background:#fff0f0;color:var(--danger)}

/* Typography and page headings */
h1,h2,h3,h4,h5,h6{color:var(--ink);font-weight:600}.page-title{font-size:clamp(1.35rem,2vw,1.75rem);font-weight:700;color:var(--school-green-900);letter-spacing:-.02em}.page-subtitle{font-size:.88rem;color:var(--muted);margin-top:.25rem}.page-title+ .page-subtitle{margin-bottom:.2rem}
.hero-card,.hero-box{position:relative;overflow:hidden;border:1px solid #cfe6dc;border-radius:var(--radius-lg);padding:clamp(1.4rem,3vw,2.2rem);background:linear-gradient(125deg,var(--school-green-900),var(--school-green-700));color:#fff;box-shadow:var(--shadow)}.hero-card:after,.hero-box:after{content:'';position:absolute;width:230px;height:230px;right:-75px;top:-100px;border:38px solid rgba(255,255,255,.08);border-radius:50%}.hero-card h1,.hero-card h2,.hero-card h3,.hero-card p,.hero-box h2,.hero-box p{color:#fff!important;position:relative;z-index:1}.hero-title{font-size:clamp(1.55rem,3vw,2.2rem);font-weight:700}.hero-subtitle,.hero-sub{color:rgba(255,255,255,.82)!important;max-width:720px}.hero-tag{position:relative;z-index:1;display:inline-flex;align-items:center;gap:.35rem;background:rgba(255,255,255,.14);border:1px solid rgba(255,255,255,.18);color:#fff!important;padding:.35rem .75rem;border-radius:999px;font-size:.76rem;font-weight:600}

/* Cards and metrics */
.card,.course-card,.stat-card,.activity-card,.menu-card{background:var(--surface);border:1px solid var(--line)!important;border-radius:var(--radius)!important;box-shadow:var(--shadow-sm);transition:transform .18s ease,box-shadow .18s ease,border-color .18s ease}.card{overflow:hidden}.card:hover,.course-card:hover,.menu-card:hover{border-color:#b8d9ca!important;box-shadow:var(--shadow)}.course-card:hover,.menu-card:hover{transform:translateY(-3px)}
.stat-card{height:100%;padding:1.15rem!important;border-left:4px solid var(--school-green-600)!important}.stat-card h6,.stat-label{font-size:.78rem;color:var(--muted);font-weight:500;margin-bottom:.42rem}.stat-card h3,.stat-value{font-size:1.8rem;font-weight:700;color:var(--school-green-900);margin:0}.stat-card i{color:var(--school-green-600)}
.menu-card{height:100%;padding:1.25rem;text-align:center}.menu-card i{font-size:1.6rem;color:var(--school-green-600);margin-bottom:.55rem}.menu-card h5{font-size:.95rem}.course-card{overflow:hidden}.course-card .course-body{padding:1.1rem}.course-tag{font-size:.7rem;text-transform:uppercase;letter-spacing:.05em;color:var(--school-green-700);font-weight:600}.course-title{font-size:1rem;font-weight:600}.course-meta{font-size:.78rem;color:var(--muted)}.activity-card{padding:1rem!important}

/* Tables */
.table-responsive{border-radius:13px}.table{margin-bottom:0;color:var(--ink);font-size:.86rem}.table>:not(caption)>*>*{padding:.82rem .76rem;border-bottom-color:#e4ece8;vertical-align:middle}.table thead th,.table-light th{background:#eaf5f0!important;color:var(--school-green-900);font-size:.75rem;font-weight:600;letter-spacing:.01em;border-bottom:1px solid #cfe2da}.table-hover>tbody>tr:hover>*{background:#f3faf7}.table-bordered{border-color:var(--line)}

/* Forms */
.form-label{font-size:.82rem;font-weight:600;color:#35463f;margin-bottom:.42rem}.form-control,.form-select,textarea{min-height:44px;border:1px solid #ccd9d3;border-radius:11px!important;background:#fff;font-size:.88rem;padding:.62rem .8rem}.form-control:focus,.form-select:focus,textarea:focus{border-color:var(--school-green-600);box-shadow:0 0 0 3px rgba(17,130,98,.13)}.form-control::placeholder{color:#9aa7a2}.input-group-text{border-color:#ccd9d3;background:#f3f7f5}.form-check-input:checked{background-color:var(--school-green-700);border-color:var(--school-green-700)}

/* Buttons and badges */
.btn{min-height:39px;border-radius:10px;font-size:.83rem;font-weight:500;padding:.52rem .9rem;display:inline-flex;align-items:center;justify-content:center;gap:.28rem}.btn-sm{min-height:32px;padding:.36rem .65rem;font-size:.75rem}.btn-primary{background:var(--school-green-700);border-color:var(--school-green-700)}.btn-primary:hover,.btn-primary:focus{background:var(--school-green-900);border-color:var(--school-green-900)}.btn-outline-primary{color:var(--school-green-700);border-color:#8fbbaa}.btn-outline-primary:hover{color:#fff;background:var(--school-green-700);border-color:var(--school-green-700)}.btn-success{background:#19805f;border-color:#19805f}.btn-danger{background:var(--danger);border-color:var(--danger)}.badge{padding:.42em .68em;border-radius:999px;font-weight:500}.bg-primary{background:var(--school-green-700)!important}.bg-success{background:#19805f!important}.bg-warning{background:#d39a28!important;color:#fff!important}.badge-done{background:#daf3e8;color:#12684c}.badge-pending{background:var(--school-gold-soft);color:#8b6415}

/* Alerts and progress */
.alert{border:0;border-left:4px solid;border-radius:12px;font-size:.86rem}.alert-success{background:#e5f6ef;color:#17654e;border-color:#279371}.alert-danger{background:#fff0f1;color:#98343b;border-color:var(--danger)}.alert-warning{background:#fff7dd;color:#805d18;border-color:var(--school-gold)}.alert-info{background:#eaf6fb;color:#245f78;border-color:var(--info)}.progress{height:8px;background:#e3ece8;border-radius:999px}.progress-bar{background:linear-gradient(90deg,var(--school-green-600),#2da884)}

/* Student local nav and sidebar */
.student-local-nav{display:flex;gap:.45rem;overflow-x:auto;margin-bottom:1.25rem;padding:.35rem;background:#fff;border:1px solid var(--line);border-radius:14px;box-shadow:var(--shadow-sm)}.student-local-nav a{display:flex;align-items:center;gap:.38rem;padding:.6rem .85rem;border-radius:10px;text-decoration:none;white-space:nowrap;color:#51615a;font-size:.82rem}.student-local-nav a.active,.student-local-nav a:hover{background:var(--school-green-100);color:var(--school-green-800)}
.sidebar{background:var(--school-green-900)!important;color:#fff;min-height:100vh;padding:1.35rem!important}.sidebar a{display:block;margin:.3rem 0;padding:.65rem .8rem;border-radius:10px;color:rgba(255,255,255,.78)!important;text-decoration:none}.sidebar a:hover,.sidebar a.active{background:rgba(255,255,255,.12);color:#fff!important}.sidebar img{border:4px solid rgba(255,255,255,.2)}

/* Quiz and lesson content */
.question-box,.question-card{background:#fff;border:1px solid var(--line);border-radius:14px;padding:1.1rem;margin-bottom:1rem}.question-title{font-weight:600;color:var(--school-green-900)}.option-row,.form-check{border-radius:10px}.lesson-content iframe,.lesson-content video,.pdf-frame{width:100%;border:0;border-radius:14px;background:#eef3f1}.profile-img{border:5px solid #fff;box-shadow:0 5px 20px rgba(6,62,48,.15)}

/* Footer */
.app-footer{background:var(--school-green-900);border-top:4px solid var(--school-gold);padding:1rem 0;color:#deeee8}.app-footer span{font-size:.76rem;color:#deeee8!important}

/* Login page overrides */
body.login-page{font-family:"Prompt",Tahoma,sans-serif!important;background:linear-gradient(125deg,rgba(6,62,48,.96),rgba(10,107,80,.88)),url('../img/logo.png') center/260px no-repeat fixed!important;min-height:100vh;padding:1.25rem}.login-page .login-box{width:min(430px,100%)!important;background:rgba(255,255,255,.98)!important;border:1px solid rgba(255,255,255,.6);border-top:5px solid var(--school-gold);border-radius:22px!important;padding:2rem!important;box-shadow:0 24px 70px rgba(0,0,0,.26)!important;backdrop-filter:none!important}.login-page .logo{width:88px!important;height:88px;object-fit:contain;background:#fff;border-radius:18px;padding:4px;box-shadow:0 8px 24px rgba(6,62,48,.15)}.login-page h2{font-size:1.35rem;color:var(--school-green-900);margin:1rem 0 1.25rem}.login-page input{width:100%!important;border:1px solid #ccd9d3!important;border-radius:11px!important;padding:.78rem .9rem!important;font-family:inherit}.login-page .btn-login{background:var(--school-green-700)!important;border-radius:11px!important;font-family:inherit}.login-page .btn-login:hover{background:var(--school-green-900)!important}.login-page .dark-mode-toggle{display:none}.login-page .small{color:var(--muted);margin-top:1rem}.login-page .eye{top:11px}.login-page.dark{background:linear-gradient(125deg,#063e30,#0a6b50)!important}.login-page.dark .login-box{color:var(--ink)!important}

@media(max-width:1399px){.app-navbar{padding:.48rem 0}.brand-logo{width:40px;height:40px}.brand-copy strong{font-size:.88rem}.brand-copy small{font-size:.6rem}.app-menu{gap:.06rem}.app-menu .nav-link{font-size:.74rem;gap:.25rem;padding:.48rem .38rem!important;min-height:40px}.app-menu i{width:14px}.nav-account-button{min-height:40px;padding:.18rem .42rem .18rem .22rem}.user-avatar{width:34px;height:34px}.account-copy{max-width:112px}.account-copy strong{font-size:.72rem}.account-copy small{font-size:.6rem}}
@media(max-width:1199px){.brand-copy small{display:none}.account-copy{display:none}.app-menu .nav-link{font-size:.72rem;padding:.46rem .34rem!important}.nav-account{padding-left:.45rem}}
@media(max-width:991px){.app-navbar{position:sticky;padding:.65rem 0}.navbar-collapse{padding-top:1rem}.app-menu{gap:.25rem;flex-wrap:wrap;justify-content:flex-start;overflow-x:visible}.app-menu .nav-item{width:100%}.app-menu .nav-link{padding:.72rem!important;font-size:.9rem;min-height:auto}.app-menu .nav-link span{white-space:nowrap!important}.brand-copy small{display:block}.nav-account{border-left:0;border-top:1px solid var(--line);padding:.8rem 0 0;margin-top:.65rem}.account-copy{display:flex;max-width:none}.logout-button{width:auto;padding:0 .6rem;display:flex;gap:.4rem;align-items:center}.app-main>.container-xxl{padding-top:1.25rem!important}.sidebar{min-height:auto}.hero-card{border-radius:18px}}
@media(max-width:767px){.page-title{font-size:1.3rem}.card{border-radius:13px!important}.table{font-size:.78rem}.table>:not(caption)>*>*{padding:.65rem .55rem}.stat-card h3,.stat-value{font-size:1.45rem}.btn{white-space:normal}.hero-card{padding:1.35rem}.app-footer .container-xxl{justify-content:center!important;text-align:center}.student-local-nav{position:sticky;top:74px;z-index:20}.login-page .login-box{padding:1.45rem!important}}

/* Account dropdown and role-aware navbar */
.nav-account-dropdown{margin-left:.45rem;flex:0 0 auto}.nav-account-button{display:flex;align-items:center;gap:.55rem;min-height:44px;padding:.25rem .5rem .25rem .3rem;border:1px solid var(--line);border-radius:14px;background:#fff;color:var(--ink)}.nav-account-button:hover,.nav-account-button[aria-expanded="true"]{border-color:#a9cdbf;background:#f5faf7}.nav-account-button:after{color:#84918c;font-size:.68rem}.account-menu{width:245px;margin-top:.6rem!important;padding:.55rem;border:1px solid var(--line);border-radius:15px;box-shadow:0 18px 44px rgba(6,62,48,.15)}.account-menu-head{display:flex;align-items:center;gap:.7rem;padding:.55rem}.account-menu-head>div{display:flex;min-width:0;flex-direction:column}.account-menu-head strong{font-size:.8rem;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.account-menu-head small{font-size:.68rem;color:var(--muted)}.user-avatar.large{width:43px;height:43px}.account-menu .dropdown-item{display:flex;align-items:center;gap:.65rem;padding:.62rem .7rem;border-radius:10px;color:#45564f;font-size:.76rem}.account-menu .dropdown-item i{width:17px;color:var(--school-green-600)}.account-menu .dropdown-item:hover{background:var(--school-green-50);color:var(--school-green-800)}.account-menu .logout-menu-item{width:100%;color:var(--danger)}.account-menu .logout-menu-item i{color:var(--danger)}.account-menu .logout-menu-item:hover{background:#fff1f2;color:#a72f38}.guest-actions{display:flex;gap:.5rem}.nav-role-teacher .app-menu .nav-link.active{background:#eee9fb;color:#6343b8!important}.nav-role-teacher .app-menu .nav-link.active i{color:#7456d6}.nav-role-student .app-menu .nav-link.active{background:#e7f2fb;color:#176d99!important}.nav-role-student .app-menu .nav-link.active i{color:#238daf}.nav-role-admin .app-menu .nav-link.active{background:#fff4d8;color:#835f11!important}.nav-role-admin .app-menu .nav-link.active i{color:#c79422}
@media(max-width:991px){.nav-account-dropdown{margin:1rem 0 0;padding-top:.8rem;border-top:1px solid var(--line)}.nav-account-button{width:100%;justify-content:flex-start}.nav-account-button .account-copy{display:flex}.nav-account-button:after{margin-left:auto}.account-menu{width:100%}.guest-actions{margin-top:1rem;flex-direction:column}.guest-actions .btn{width:100%}}

/* Compact teacher navbar after adding Lab menus */
.teacher-dashboard a,.teacher-dashboard a:hover,.teacher-dashboard a:focus,.teacher-dashboard a:active,.teacher-dashboard a *{text-decoration:none!important;text-decoration-line:none!important;text-decoration-style:none!important;text-decoration-thickness:0!important;text-decoration-color:transparent!important}.teacher-dashboard a.quick-card,.teacher-dashboard a.work-card,.teacher-dashboard a.quick-card:hover,.teacher-dashboard a.work-card:hover{text-decoration:none!important;text-decoration-line:none!important}
@media(max-width:1399px){.app-navbar .navbar-collapse{flex:1 1 auto}.nav-account-button{min-height:40px;padding:.18rem .42rem .18rem .22rem;gap:.42rem}.nav-account-dropdown{margin-left:.28rem}.nav-account-button .user-avatar{width:34px;height:34px}.nav-account-button .account-copy{max-width:108px}.nav-account-button .account-copy strong{font-size:.72rem}.nav-account-button .account-copy small{font-size:.6rem}}
@media(max-width:1199px){.nav-account-button .account-copy{display:none}.nav-account-button{padding:.18rem .34rem}}
@media(max-width:991px){.nav-account-button .account-copy{display:flex;max-width:none}.app-menu .nav-link span{white-space:nowrap!important}}

/* Hard guard: keep top navbar labels on one line on desktop/tablet */
.app-navbar .app-menu{white-space:nowrap!important;flex-wrap:nowrap!important;overflow-x:auto!important;overflow-y:hidden!important}
.app-navbar .app-menu>.nav-item{flex:0 0 auto!important;white-space:nowrap!important}
.app-navbar .app-menu .nav-link{display:inline-flex!important;flex-wrap:nowrap!important;white-space:nowrap!important;min-width:max-content!important}
.app-navbar .app-menu .nav-link span{white-space:nowrap!important;word-break:keep-all!important;overflow-wrap:normal!important;min-width:max-content!important}