/*
  ROADMAP Tutorials - Premium Calm Theme
  Palette: Blue (#2563EB), Navy/Black (#0B1220), Purple accent (#7C3AED)
  Typography: Inter
*/

:root{
  --rm-font: "Inter", "Segoe UI", Arial, sans-serif;
  --rm-blue: #2563EB;
  --rm-purple: #7C3AED;
  --rm-navy: #0B1220;
  --rm-text-light: #EAF0FF;
  --rm-text-dark: #0F172A;

  --rm-bg: var(--rm-navy);
  --rm-surface: rgba(234, 240, 255, 0.06);
  --rm-surface-strong: rgba(234, 240, 255, 0.12);
  --rm-border: rgba(234, 240, 255, 0.12);
  --rm-shadow: 0 18px 40px rgba(0, 0, 0, 0.35);
  --rm-shadow-sm: 0 8px 18px rgba(0, 0, 0, 0.25);
  --rm-radius: 16px;
  --rm-radius-lg: 24px;
  --rm-ring: rgba(37, 99, 235, 0.3);

  --primary: var(--rm-blue);
  --primary-dark: var(--rm-blue);
  --success: var(--rm-blue);
  --warning: var(--rm-purple);
  --danger: var(--rm-purple);
  --info: var(--rm-blue);
  --gray: rgba(234, 240, 255, 0.7);

  --bs-body-font-family: var(--rm-font);
  --bs-body-color: var(--rm-text-light);
  --bs-body-bg: var(--rm-navy);
  --bs-primary: var(--rm-blue);
  --bs-dark: var(--rm-navy);
}

*{box-sizing: border-box;}

body.rm-body{
  font-family: var(--rm-font);
  color: var(--rm-text-light);
  background:
    radial-gradient(1200px 500px at 20% -20%, rgba(37, 99, 235, 0.18), transparent 60%),
    var(--rm-bg);
  min-height: 100vh;
}

a{color: var(--rm-blue); text-decoration: none;}
a:hover{color: var(--rm-purple);}

h1, h2, h3, h4, h5, h6{color: var(--rm-text-light);}

.rm-muted{color: rgba(234, 240, 255, 0.7);} 

.text-muted{color: rgba(234, 240, 255, 0.7) !important;}
.text-dark{color: var(--rm-text-light) !important;}
.text-success{color: var(--rm-blue) !important;}
.text-info{color: var(--rm-blue) !important;}
.text-warning,
.text-danger{color: var(--rm-purple) !important;}
.text-primary{color: var(--rm-blue) !important;}


/* App shell */
.rm-app-shell{
  display: grid;
  grid-template-columns: 280px 1fr;
  grid-template-rows: auto 1fr;
  grid-template-areas:
    "sidebar topbar"
    "sidebar main";
  min-height: 100vh;
}

.rm-sidebar{
  grid-area: sidebar;
  background: var(--rm-navy);
  color: var(--rm-text-light);
  padding: 1.5rem 1.4rem;
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
  border-right: 1px solid var(--rm-border);
  position: sticky;
  top: 0;
  height: 100vh;
}

.rm-brand{
  display: inline-flex;
  flex-direction: column;
  gap: 0.2rem;
}

.rm-logo-mark{
  font-weight: 700;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--rm-blue);
  font-size: 0.75rem;
}

.rm-logo-text{
  font-weight: 700;
  font-size: 1.05rem;
  color: var(--rm-text-light);
}

.rm-sidebar-meta{
  display: flex;
  flex-direction: column;
  gap: 0.2rem;
  font-size: 0.85rem;
  color: rgba(234, 240, 255, 0.6);
}

.rm-role{
  text-transform: uppercase;
  letter-spacing: 0.16em;
  font-size: 0.65rem;
  color: rgba(234, 240, 255, 0.55);
}

.rm-user-name{font-weight: 600; color: var(--rm-text-light);} 

.rm-sidebar-nav{display: flex; flex-direction: column; gap: 1rem;}
.rm-nav-group{display: flex; flex-direction: column; gap: 0.4rem;}
.rm-nav-label{
  text-transform: uppercase;
  letter-spacing: 0.14em;
  font-size: 0.62rem;
  color: rgba(234, 240, 255, 0.4);
}

.rm-nav-link{
  display: flex;
  align-items: center;
  gap: 0.6rem;
  padding: 0.55rem 0.8rem;
  border-radius: 12px;
  color: rgba(234, 240, 255, 0.85);
  font-weight: 600;
  transition: background 0.2s ease, color 0.2s ease;
}

.rm-nav-link:hover{
  background: rgba(234, 240, 255, 0.08);
  color: var(--rm-text-light);
}

.rm-nav-link.active{
  background: rgba(37, 99, 235, 0.2);
  color: var(--rm-text-light);
  border: 1px solid rgba(37, 99, 235, 0.4);
}

.rm-nav-dot{
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--rm-purple);
}

.rm-sidebar-footer{margin-top: auto;}

.rm-topbar{
  grid-area: topbar;
  padding: 1rem 1.6rem;
  background: rgba(11, 18, 32, 0.9);
  border-bottom: 1px solid var(--rm-border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  position: sticky;
  top: 0;
  z-index: 1020;
}

.rm-topbar-title{display: flex; flex-direction: column;}
.rm-topbar-title h1{margin: 0; font-size: 1.35rem; font-weight: 700;}
.rm-topbar-kicker{font-size: 0.65rem; letter-spacing: 0.18em; text-transform: uppercase; color: rgba(234, 240, 255, 0.6);} 

.rm-topbar-left{display: flex; align-items: center; gap: 1rem;}
.rm-topbar-right{display: flex; align-items: center; gap: 0.75rem;}

.rm-user-pill{
  padding: 0.35rem 0.8rem;
  border-radius: 999px;
  background: rgba(234, 240, 255, 0.1);
  color: var(--rm-text-light);
  font-weight: 600;
  font-size: 0.85rem;
}

.rm-icon-btn{
  border: 1px solid var(--rm-border);
  border-radius: 12px;
  padding: 0.4rem 0.6rem;
  background: rgba(234, 240, 255, 0.05);
  color: var(--rm-text-light);
}

.rm-burger,
.rm-burger::before,
.rm-burger::after{background: var(--rm-text-light);} 

.rm-burger{width: 20px; height: 2px; position: relative; display: inline-block;}
.rm-burger::before,
.rm-burger::after{content: ""; position: absolute; left: 0; width: 20px; height: 2px;} 
.rm-burger::before{top: -6px;} 
.rm-burger::after{top: 6px;} 

.rm-app-main{
  grid-area: main;
  padding: 1.6rem 2rem 3rem;
}

.rm-container{max-width: 1320px; margin: 0 auto; width: 100%;}

/* Offcanvas */
.rm-offcanvas{
  background: var(--rm-navy);
  color: var(--rm-text-light);
}

.rm-offcanvas .btn-close{filter: invert(1);} 

/* Public nav */
.rm-public-nav{
  background: rgba(11, 18, 32, 0.95);
  border-bottom: 1px solid var(--rm-border);
}

.rm-public-nav .navbar-brand{font-weight: 700;}

.rm-public-nav .nav-link{
  font-weight: 600;
  color: var(--rm-text-light);
  border-radius: 999px;
  padding: 0.45rem 0.9rem;
}

.rm-public-nav .nav-link.active,
.rm-public-nav .nav-link:hover{background: rgba(234, 240, 255, 0.08);} 

.rm-public-main{padding: 2.5rem 0 3.5rem;}

.rm-public-nav .navbar-toggler{border-color: var(--rm-border);}
.rm-public-nav .navbar-toggler-icon{filter: invert(1);}

/* Buttons */
.btn{
  border-radius: 12px;
  font-weight: 600;
  transition: transform 0.2s ease, box-shadow 0.2s ease, background 0.2s ease;
}

.btn:focus-visible{outline: none; box-shadow: 0 0 0 0.2rem var(--rm-ring);} 

.btn-primary,
.rm-btn-primary{
  background: var(--rm-blue);
  border: none;
  color: var(--rm-text-light);
  box-shadow: var(--rm-shadow-sm);
}

.btn-primary:hover,
.rm-btn-primary:hover{filter: brightness(0.92); transform: translateY(-1px);} 

.btn-outline-dark{
  border-color: var(--rm-blue);
  color: var(--rm-blue);
}

.btn-outline-dark:hover{background: rgba(37, 99, 235, 0.12); color: var(--rm-text-light);} 

.btn-outline-light{
  border-color: rgba(234, 240, 255, 0.35);
  color: var(--rm-text-light);
}

.btn-outline-light:hover{background: rgba(234, 240, 255, 0.1); color: var(--rm-text-light);} 

.btn-dark{background: var(--rm-navy); border-color: var(--rm-navy);} 

.btn-success,
.btn-info{
  background: var(--rm-blue);
  border-color: var(--rm-blue);
  color: var(--rm-text-light);
}

.btn-warning,
.btn-danger{
  background: var(--rm-purple);
  border-color: var(--rm-purple);
  color: var(--rm-text-light);
}

.btn-secondary{
  background: rgba(234, 240, 255, 0.12);
  border-color: var(--rm-border);
  color: var(--rm-text-light);
}

.btn-outline-secondary{
  border-color: var(--rm-border);
  color: rgba(234, 240, 255, 0.7);
}

.btn-outline-secondary:hover{
  background: rgba(234, 240, 255, 0.08);
  color: var(--rm-text-light);
}

/* Cards */
.rm-card,
.content-card,
.status-card,
.dashboard-section,
.stat-card{
  background: var(--rm-surface);
  border: 1px solid var(--rm-border);
  border-radius: var(--rm-radius);
  box-shadow: var(--rm-shadow-sm);
}

.rm-card{padding: 1.5rem;}

.rm-card-warning{
  border-color: rgba(124, 58, 237, 0.45);
  background: rgba(124, 58, 237, 0.12);
}

.rm-card-header{
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
  margin-bottom: 1rem;
}

.rm-card-title{font-weight: 700; font-size: 1.05rem; margin: 0;}

.rm-section{margin-bottom: 2rem;}

.rm-page-header{
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 1.8rem;
}

.rm-page-title{font-size: 1.6rem; font-weight: 700; margin: 0;}

.rm-page-subtitle{color: rgba(234, 240, 255, 0.7); margin: 0;}

.rm-stat-grid{display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 1rem;}

.rm-stat-card{
  padding: 1.2rem;
  display: flex;
  gap: 0.9rem;
  align-items: center;
}

.rm-stat-icon{
  width: 44px;
  height: 44px;
  border-radius: 12px;
  display: grid;
  place-items: center;
  color: var(--rm-text-light);
  font-weight: 700;
  background: rgba(37, 99, 235, 0.7);
}

.rm-stat-value{font-size: 1.4rem; font-weight: 700; margin: 0;}

.rm-stat-label{font-size: 0.8rem; color: rgba(234, 240, 255, 0.6); margin: 0;}

.rm-action-grid{display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 1rem;}

.rm-action-card{
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
  padding: 1.2rem;
  border-radius: var(--rm-radius);
  border: 1px solid var(--rm-border);
  background: var(--rm-surface);
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.rm-action-card:hover{transform: translateY(-2px); box-shadow: var(--rm-shadow);} 

.rm-action-icon{
  width: 42px;
  height: 42px;
  border-radius: 12px;
  display: grid;
  place-items: center;
  color: var(--rm-text-light);
  background: rgba(124, 58, 237, 0.7);
  font-weight: 700;
}

.rm-tabs .nav-link{
  border-radius: 999px;
  font-weight: 600;
  color: var(--rm-text-light);
  background: rgba(234, 240, 255, 0.06);
  border: 1px solid transparent;
}

.rm-tabs .nav-link.active{
  background: rgba(37, 99, 235, 0.2);
  border-color: rgba(37, 99, 235, 0.5);
}

/* Tables */
.table-responsive{border-radius: var(--rm-radius);} 

.table{
  background: transparent;
  border-radius: var(--rm-radius);
  margin-bottom: 0;
}

.rm-table{border-collapse: separate; border-spacing: 0;}

.rm-table thead th{
  background: rgba(234, 240, 255, 0.08);
  text-transform: uppercase;
  letter-spacing: 0.12em;
  font-size: 0.65rem;
  color: rgba(234, 240, 255, 0.65);
  border-bottom: 1px solid var(--rm-border);
}

.rm-table tbody tr{background: transparent;} 
.rm-table tbody tr:nth-child(even){background: rgba(234, 240, 255, 0.03);} 

.rm-table tbody tr:hover{background: rgba(37, 99, 235, 0.12);} 

.rm-table td, .rm-table th{padding: 0.85rem 1rem; vertical-align: middle; color: var(--rm-text-light);} 

/* Forms */
.form-control, .form-select, textarea{
  border-radius: 12px;
  border-color: var(--rm-border);
  background: rgba(234, 240, 255, 0.06);
  color: var(--rm-text-light);
  padding: 0.7rem 0.9rem;
}

.form-select option,
select option,
optgroup{
  /* Some mobile browsers ignore inherited select colors; force readable dropdown options */
  color: var(--rm-text-dark) !important;
  background: #ffffff !important;
}

.input-group-text{
  background: rgba(234, 240, 255, 0.08);
  border-color: var(--rm-border);
  color: var(--rm-text-light);
}

.form-control::placeholder, textarea::placeholder{color: rgba(234, 240, 255, 0.5);} 

.form-control:focus, .form-select:focus, textarea:focus{
  border-color: rgba(37, 99, 235, 0.7);
  box-shadow: 0 0 0 0.2rem var(--rm-ring);
  background: rgba(234, 240, 255, 0.08);
}

.form-label{font-weight: 600; color: var(--rm-text-light);} 

.rm-form-note{font-size: 0.85rem; color: rgba(234, 240, 255, 0.6);} 

.rm-form-section{
  padding: 1.2rem;
  border-radius: var(--rm-radius);
  border: 1px solid var(--rm-border);
  background: rgba(234, 240, 255, 0.04);
}

.rm-course-grid{
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: 0.75rem;
}

.rm-course-card{
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.75rem 0.9rem;
  border-radius: 12px;
  border: 1px solid var(--rm-border);
  background: rgba(234, 240, 255, 0.04);
  font-weight: 600;
  cursor: pointer;
}

.rm-course-card input[type="checkbox"]{
  margin: 0;
}

.rm-course-card small{
  font-weight: 500;
}

.rm-course-card input[disabled] + span{
  opacity: 0.6;
}

.rm-choice-card{
  border: 1px solid var(--rm-border);
  border-radius: 12px;
  padding: 0.75rem 1rem;
  background: rgba(234, 240, 255, 0.04);
}

.rm-password-toggle{
  border: none;
  background: transparent;
  color: rgba(234, 240, 255, 0.7);
  font-weight: 600;
}

.form-check-input:checked{
  background-color: var(--rm-blue);
  border-color: var(--rm-blue);
}

/* Alerts */
.alert{
  border-radius: var(--rm-radius);
  border: 1px solid var(--rm-border);
  background: rgba(234, 240, 255, 0.06);
  color: var(--rm-text-light);
}

.alert-success,
.alert-warning,
.alert-danger,
.alert-info{border-left: 4px solid var(--rm-blue);} 

/* Badges */
.badge{
  border-radius: 999px;
  font-weight: 600;
  background: rgba(37, 99, 235, 0.2);
  color: var(--rm-text-light);
}

.bg-primary{background-color: var(--rm-blue) !important; color: var(--rm-text-light) !important;}
.bg-success{background-color: var(--rm-blue) !important; color: var(--rm-text-light) !important;}
.bg-info{background-color: rgba(37, 99, 235, 0.2) !important; color: var(--rm-text-light) !important;}
.bg-warning{background-color: rgba(124, 58, 237, 0.35) !important; color: var(--rm-text-light) !important;}
.bg-danger{background-color: rgba(124, 58, 237, 0.5) !important; color: var(--rm-text-light) !important;}
.bg-dark{background-color: var(--rm-navy) !important; color: var(--rm-text-light) !important;}

/* Hero */
.rm-hero{
  padding: 3.5rem 0;
}

.rm-hero-wrap{
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 2rem;
  align-items: center;
}

.rm-hero-title{
  font-size: clamp(2rem, 4vw, 3.2rem);
  font-weight: 800;
  line-height: 1.1;
  margin: 0 0 1rem;
}

.rm-hero-subtitle{
  font-size: 1rem;
  line-height: 1.6;
  max-width: 55ch;
  color: rgba(234, 240, 255, 0.7);
  margin: 0;
}

.rm-hero-actions{
  display: flex;
  gap: 0.75rem;
  flex-wrap: wrap;
}

.rm-hero-card{padding: 1.5rem; border-radius: var(--rm-radius); background: var(--rm-surface-strong); border: 1px solid var(--rm-border);} 

.rm-feature-grid{display: grid; gap: 1rem; grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));}

.rm-feature{padding: 1rem; border-radius: 12px; border: 1px solid var(--rm-border); background: rgba(234, 240, 255, 0.05);} 

.rm-feature-title{font-weight: 600; margin-bottom: 0.25rem;} 

/* Auth */
.rm-auth-shell{padding: 2rem 0;}

.rm-auth-card{
  padding: 2rem;
  border-radius: var(--rm-radius);
  background: var(--rm-surface-strong);
  border: 1px solid var(--rm-border);
  box-shadow: var(--rm-shadow);
}

.rm-auth-side{
  background: rgba(234, 240, 255, 0.04);
  color: var(--rm-text-light);
  border-radius: var(--rm-radius);
  padding: 2rem;
  border: 1px solid var(--rm-border);
}

.rm-auth-side h3{color: var(--rm-text-light);} 

.rm-auth-side ul{margin: 0; padding-left: 1.1rem;} 

.rm-auth-side li{margin-bottom: 0.5rem;} 

/* Media helpers */
.rm-media-thumb{
  width: 100%;
  height: 200px;
  object-fit: cover;
  border-radius: 14px;
  background: rgba(234, 240, 255, 0.08);
}

.rm-doc-thumb, .rm-doc-thumb-sm{
  width: 56px;
  height: 72px;
  object-fit: cover;
  border-radius: 10px;
  border: 1px solid var(--rm-border);
  background: rgba(234, 240, 255, 0.08);
}

.rm-video-thumb-sm{
  width: 92px;
  height: 64px;
  object-fit: cover;
  border-radius: 12px;
  border: 1px solid var(--rm-border);
  background: rgba(234, 240, 255, 0.08);
}

.rm-video-player{
  width: 100%;
  height: auto;
  max-height: 70vh;
  background: var(--rm-navy);
  border-radius: var(--rm-radius);
}

.rm-viewer-card{
  position: relative;
  overflow: hidden;
  /* Make document viewer feel full-screen rather than a small embedded card */
  padding: 0;
}

.rm-viewer-watermark{
  position: absolute;
  top: 1rem;
  right: 1rem;
  z-index: 2;
  font-size: 0.75rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: rgba(234, 240, 255, 0.35);
  pointer-events: none;
}

.rm-document-viewer{
  width: 100%;
  /* Fill the viewport on most devices for comfortable reading */
  min-height: calc(100vh - 220px);
  height: calc(100vh - 220px);
  border: 1px solid var(--rm-border);
  border-radius: var(--rm-radius);
  background: #fff;
}

@media (max-width: 768px){
  .rm-document-viewer{
    min-height: calc(100vh - 180px);
    height: calc(100vh - 180px);
    border-radius: 10px;
  }
}

.rm-announcement{border-left: 3px solid var(--rm-blue);} 

.rm-pre-wrap{white-space: pre-wrap;} 

.rm-timetable-item{
  display: grid;
  grid-template-columns: 1fr 2fr 1fr;
  gap: 1rem;
  padding: 1rem;
  border-radius: 12px;
  background: rgba(234, 240, 255, 0.05);
  border: 1px solid var(--rm-border);
  align-items: center;
}

.rm-list{list-style: disc; padding-left: 1.2rem; margin: 0;} 

.rm-footer{
  background: rgba(11, 18, 32, 0.9);
  border-top: 1px solid var(--rm-border);
}

.rm-footer-app{margin-top: 2rem; border-radius: var(--rm-radius);} 

.rm-modal{
  position: fixed;
  inset: 0;
  background: rgba(11, 18, 32, 0.7);
  display: none;
  align-items: center;
  justify-content: center;
  padding: 1rem;
  z-index: 1050;
}

.rm-modal.is-open{display: flex;} 

.rm-modal-card{
  background: var(--rm-surface-strong);
  border-radius: var(--rm-radius);
  padding: 1.8rem;
  max-width: 520px;
  width: 100%;
  max-height: 90vh;
  overflow-y: auto;
  box-shadow: var(--rm-shadow);
  border: 1px solid var(--rm-border);
}

.rm-grid-2{display: grid; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); gap: 1rem;} 

@media (max-width: 991.98px){
  .rm-app-shell{grid-template-columns: 1fr; grid-template-areas: "topbar" "main";}
  .rm-app-main{padding: 1.2rem 1rem 2rem;}
  .rm-topbar{padding: 0.9rem 1rem;}
}

@media (min-width: 1400px){
  .rm-container{max-width: 1440px;}
}

@media (max-width: 767.98px){
  .rm-page-header{flex-direction: column; align-items: flex-start;}
  .rm-stat-grid{grid-template-columns: 1fr;}
  .rm-action-grid{grid-template-columns: 1fr;}
  .rm-topbar{flex-direction: column; align-items: flex-start;}
  .rm-topbar-right{width: 100%; justify-content: space-between; flex-wrap: wrap;}
  .rm-app-main{padding: 1rem 0.9rem 2rem;}
  .rm-timetable-item{grid-template-columns: 1fr; text-align: left;}
  .rm-timetable-item .text-end{text-align: left !important;}
  .table-responsive{overflow-x: auto;}
  .rm-table{min-width: 640px;}
}

@media (max-width: 575.98px){
  .rm-hero{padding: 2.5rem 0;}
  .rm-auth-card{padding: 1.5rem;}
  .rm-hero-title{font-size: clamp(2rem, 7vw, 2.5rem);} 
  .rm-hero-subtitle{font-size: 0.95rem;} 
}

/* Viewer hardening: reduce visible download controls */
.rm-document-toolbar-shield{
  position: absolute;
  top: 0;
  right: 0;
  width: 180px;
  height: 56px;
  z-index: 3;
  pointer-events: auto;
  background: transparent;
}
@media (max-width: 768px){
  .rm-document-toolbar-shield{
    width: 140px;
    height: 48px;
  }
}
.rm-video-player::-webkit-media-controls-download-button{
  display: none !important;
}
.rm-video-player::-internal-media-controls-download-button{
  display: none !important;
}
.rm-video-player::-webkit-media-controls-enclosure{
  overflow: hidden;
}