/* =========================================================
MSC SOFTWARE ENGINEERING MODULES CSS STYLESHEET
========================================================= */

:root {
  --primary: #f59e0b;
  --bg: #020617;
  --card-bg: rgba(255, 255, 255, 0.03);
  --text-main: #ffffff;
  --text-muted: #cbd5e1;
  --border-color: rgba(255, 255, 255, 0.08);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  padding: 40px 20px;
  overflow-x: hidden;
  background-color: var(--bg);
  color: var(--text-main);
  font-family: "Segoe UI", sans-serif;
}

/* ==========================================================================
SEMANTIC STRUCTURE WRAPPERS
========================================================================== */

.semantic-structure {
  display: contents;
}

/* ==========================================================================
RETURN BUTTON
Static inside the normal page flow so it never follows the user while scrolling.
========================================================================== */

.page-return{
  position:relative;
  display:inline-flex;
  align-items:center;
  gap:10px;

  width:fit-content;
  max-width:calc(100% - 32px);

  margin:0;
  padding:11px 18px;

  overflow:hidden;

  border:1px solid rgba(255,176,92,.92);
  border-radius:999px;

  background:linear-gradient(
    135deg,
    rgba(185,28,28,.88),
    rgba(234,88,12,.88)
  );

  box-shadow:
    inset 0 1px 0 rgba(255,255,255,.18),
    inset 0 -1px 0 rgba(127,29,29,.35),
    0 8px 22px rgba(220,38,38,.28),
    0 0 16px rgba(249,115,22,.16);

  color:#ffffff;
  font-weight:800;
  line-height:1.25;
  text-decoration:none;
  text-shadow:0 1px 2px rgba(0,0,0,.28);

  transition:
    transform .25s ease,
    background .25s ease,
    border-color .25s ease,
    box-shadow .25s ease;
}

.page-return::before{
  content:"";
  position:absolute;
  top:0;
  left:-45%;

  width:36%;
  height:100%;

  background:linear-gradient(
    90deg,
    transparent,
    rgba(255,255,255,.20),
    transparent
  );

  transform:skewX(-20deg);
  pointer-events:none;
  transition:left .45s ease;
}

.page-return:hover,
.page-return:focus-visible{
  color:#fffaf0;
  border-color:#ffd27a;

  background:linear-gradient(
    135deg,
    #dc2626,
    #f97316
  );

  box-shadow:
    inset 0 1px 0 rgba(255,255,255,.22),
    inset 0 -1px 0 rgba(127,29,29,.28),
    0 12px 30px rgba(239,68,68,.38),
    0 0 24px rgba(249,115,22,.28);

  outline:none;
  transform:translateY(-2px);
}

.page-return:hover::before,
.page-return:focus-visible::before{
  left:120%;
}

/* ==========================================================
   TOP HEADER GLASS CARD
========================================================== */

.top-header{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:32px;

  width:100%;
  max-width:1280px;

  margin:0 auto 26px;
  padding:16px 28px;

  border:1px solid rgba(245,158,11,.18);
  border-radius:24px;

  background:linear-gradient(
    135deg,
    rgba(15,23,42,.58),
    rgba(2,6,23,.76)
  );

  box-shadow:
    inset 0 1px 0 rgba(255,255,255,.06),
    0 16px 40px rgba(0,0,0,.26),
    0 0 28px rgba(245,158,11,.05);

  backdrop-filter:blur(18px);
  -webkit-backdrop-filter:blur(18px);
}

.top-header .page-return{
  margin:0;
}

.top-header .university-brand{
  width:clamp(270px,21vw,330px);
  margin-left:auto;

  background:transparent;
  border:0;
  box-shadow:none;
}

.top-header .university-brand img{
  display:block;
  width:100%;
  height:auto;
  background:transparent;
}

/* ==========================================================
   FLOATING MODULE NAVIGATION
========================================================== */

.module-nav{
  position:fixed;
  top:180px;
  left:18px;
  right:auto;
  z-index:120;

  padding:14px 10px;

  border:1px solid rgba(245,158,11,.24);
  border-radius:28px;

  background:linear-gradient(
    180deg,
    rgba(15,23,42,.78),
    rgba(2,6,23,.88)
  );

  box-shadow:
    inset 0 1px 0 rgba(255,255,255,.06),
    0 18px 45px rgba(0,0,0,.34),
    0 0 30px rgba(245,158,11,.06);

  backdrop-filter:blur(18px);
  overflow:visible;
}

.module-nav ul{
  display:flex;
  flex-direction:column;
  align-items:center;
  gap:12px;

  margin:0;
  padding:0;

  list-style:none;
}

.module-nav li{
  position:relative;
  margin:0;
  padding:0;
}

.module-nav a{
  position:relative;

  display:flex;
  align-items:center;
  justify-content:center;

  width:50px;
  height:50px;
  padding:0;

  border:1px solid rgba(245,158,11,.42);
  border-radius:50%;

  background:radial-gradient(
    circle at 30% 25%,
    rgba(255,255,255,.13),
    rgba(255,255,255,.035) 46%,
    rgba(255,255,255,.012) 100%
  );

  box-shadow:
    inset 0 1px 0 rgba(255,255,255,.10),
    0 8px 22px rgba(0,0,0,.34);

  color:#f5bd4a;
  text-decoration:none;

  transition:
    transform .25s ease,
    border-color .25s ease,
    box-shadow .25s ease,
    color .25s ease;
}

.module-nav a i{
  font-size:1.1rem;
}

.module-nav a span{
  position:absolute;
  top:50%;
  left:62px;
  z-index:300;

  width:max-content;
  padding:8px 11px;

  border:1px solid rgba(245,158,11,.30);
  border-radius:9px;

  background:rgba(2,6,23,.98);

  box-shadow:
    0 10px 24px rgba(0,0,0,.42);

  color:#f4f4f5;
  font-size:.76rem;
  font-weight:700;
  line-height:1;
  white-space:nowrap;

  opacity:0;
  visibility:hidden;
  pointer-events:none;

  transform:translate(-8px,-50%);

  transition:
    opacity .2s ease,
    visibility .2s ease,
    transform .2s ease;
}

.module-nav a:hover,
.module-nav a:focus-visible{
  color:#fff3c4;
  border-color:#f5b942;

  box-shadow:
    inset 0 1px 0 rgba(255,255,255,.12),
    0 10px 28px rgba(0,0,0,.40),
    0 0 18px rgba(245,158,11,.20);

  outline:none;
  transform:scale(1.06);
}

.module-nav a:hover span,
.module-nav a:focus-visible span{
  opacity:1;
  visibility:visible;
  transform:translate(0,-50%);
}

/* ==========================================================
   HEADER & HERO
========================================================== */
.main-header{
  position:relative;
  width:100%;
  max-width:1100px;

  margin:-35px auto 52px;
}
/* ==========================================================
   HERO TITLE & SUBTITLE
========================================================== */
.container {
    width: 100%;
    max-width: 1100px;
    margin: 0 auto;
}

.hero-content {
    width: 100%;
    max-width: 1100px;

    margin: 0 auto;

    padding: 34px 0 42px;

    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;

    text-align: center;
}

.hero-content h1 {
    width: 100%;
    max-width: 100%;
    margin: 0 0 14px;

    background: linear-gradient(
        90deg,
        #f7b733 0%,
        #ffd86f 50%,
        #f7b733 100%
    );

    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;

    font-size: clamp(2.8rem, 3.7vw, 4.2rem);
    font-weight: 900;

    line-height: 1.05;
    letter-spacing: -0.04em;
    white-space: nowrap;

    text-align: center;
    text-shadow: 0 0 30px rgba(245, 158, 11, 0.12);
}

.subtitle {
    margin-top: 0;

    color: #d9c7a4;

    font-size: 1.55rem;
    font-weight: 600;

    letter-spacing: 0.12em;
    line-height: 1.45;
}
/* ==========================================================
   MODULE CARDS & CONTENT
========================================================== */

.module-card {
  margin-bottom: 40px;
  padding: 40px;
  border: 2px solid var(--primary);
  border-radius: 24px;
  background: var(--card-bg);
}

.question-card {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin: 30px 0;
  padding: 25px;
  border-radius: 16px;
  background: linear-gradient(135deg, #ef4444 0%, #7f1d1d 100%);
}

.assignment-title {
  margin: 0;
}

.assignment-description {
  margin: 5px 0 0;
  opacity: 0.8;
}

.assignment-download {
  padding: 10px 20px;
  border-radius: 8px;
  background: #ffffff;
  color: #b91c1c;
  font-weight: bold;
  text-decoration: none;
}

.module-subheading {
  margin-top: 40px;
}

.notebook-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 15px;
  margin-top: 25px;
}

.notebook-card {
  padding: 20px;
  border-left: 5px solid var(--primary);
  border-radius: 16px;
  background: rgba(255, 255, 255, 0.05);
  transition:
    transform 0.3s ease,
    background 0.3s ease;
}

.notebook-card:hover {
  background: rgba(255, 255, 255, 0.1);
  transform: translateY(-5px);
}

.notebook-card h4 {
  margin: 0 0 10px;
  color: var(--text-muted);
  font-size: 1rem;
}

.notebook-card.accent-blue {
  border-left-color: #3b82f6;
}

.notebook-card.accent-purple {
  border-left-color: #8b5cf6;
}

.notebook-card.accent-pink {
  border-left-color: #ec4899;
}

.notebook-card.accent-green {
  border-left-color: #10b981;
}

.notebook-card.accent-gold {
  border-left-color: #f59e0b;
}

.notebook-card.accent-html {
  border-left-color: #e34c26;
}

.notebook-card.accent-css {
  border-left-color: #264de4;
}

.notebook-card.accent-javascript {
  border-left-color: #f7df1e;
}

.notebook-card.accent-cyan {
  border-left-color: #00d1ff;
}

.notebook-card.accent-cpip {
  border-left-color: #7000ff;
}

.notebook-card.accent-magenta {
  border-left-color: #ff00fb;
}

.notebook-card.accent-red {
  border-left-color: #ff3333;
}

.notebook-card.accent-student {
  border-left-color: #0eb4a0;
}

.btn-code {
  display: inline-block;
  padding: 8px 12px;
  border-radius: 8px;
  background: #059669;
  color: #ffffff;
  font-size: 0.8rem;
  font-weight: bold;
  text-decoration: none;
  transition:
    opacity 0.3s ease,
    transform 0.3s ease;
}

.btn-code:hover,
.btn-code:focus-visible {
  opacity: 0.9;
  outline: none;
  transform: translateY(-2px);
}

.project-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 10px;
}

.live-demo-btn {
  background: #3b82f6;
}

#site-footer {
  width: 100%;
  margin-top: 60px;
  padding: 40px 0;
  border-top: 1px solid var(--border-color);
  text-align: center;
  opacity: 0.6;
}

.footer-source-link {
  color: inherit;
  text-decoration: none;
}

/* ==========================================================
   MOBILE MODULE NAVIGATION CONTROLS
========================================================== */

.module-navigation-wrapper{
  display:contents;
}

.module-menu-toggle{
  display:none;
}

/* ==========================================================
   MOBILE RESPONSIVE LAYOUT
========================================================== */

@media (max-width: 700px) {
  body{
    padding:20px 12px 24px;
  }

  .top-header{
    flex-direction:column;
    justify-content:center;
    gap:16px;
    width:100%;
    margin:0 auto 18px;
    padding:18px 16px;
  }

  .top-header .page-return{
    display:flex;
    justify-content:center;
    width:100%;
    max-width:100%;
    margin:0;
    padding:10px 14px;
    font-size:.78rem;
    text-align:center;
  }

  .top-header .university-brand{
    width:min(100%,320px);
    margin:0 auto;
  }

  .module-navigation-wrapper{
    position:relative;
    display:flex;
    justify-content:center;
    width:100%;
    margin:0 auto 18px;
  }

  .module-menu-toggle{
    display:flex;
    appearance:none;
    -webkit-appearance:none;
    flex-direction:column;
    justify-content:center;
    align-items:center;
    gap:5px;
    width:48px;
    height:48px;
    padding:0;
    border:1px solid rgba(245,158,11,.42);
    border-radius:50%;
    background:rgba(2,6,23,.88);
    box-shadow:0 10px 28px rgba(0,0,0,.30);
    cursor:pointer;
  }

  .module-menu-toggle:focus-visible{
    outline:2px solid rgba(255,210,122,.95);
    outline-offset:4px;
  }

  .module-menu-toggle span{
    display:block;
    width:20px;
    height:2px;
    border-radius:999px;
    background:#f5bd4a;
    transition:transform .25s ease, opacity .25s ease;
  }

  .module-menu-toggle.is-open span:nth-child(1){
    transform:translateY(7px) rotate(45deg);
  }

  .module-menu-toggle.is-open span:nth-child(2){
    opacity:0;
  }

  .module-menu-toggle.is-open span:nth-child(3){
    transform:translateY(-7px) rotate(-45deg);
  }

  .module-nav{
    position:absolute;
    top:calc(100% + 12px);
    left:50%;
    right:auto;
    z-index:150;
    width:min(92vw,360px);
    max-height:70vh;
    margin:0;
    padding:14px;
    overflow-y:auto;
    opacity:0;
    visibility:hidden;
    pointer-events:none;
    transform:translateX(-50%) translateY(-8px);
    border-radius:22px;
    transition:opacity .25s ease, transform .25s ease, visibility .25s ease;
  }

  .module-nav.is-open{
    opacity:1;
    visibility:visible;
    pointer-events:auto;
    transform:translateX(-50%) translateY(0);
  }

  .module-nav ul{
    display:grid;
    grid-template-columns:repeat(3,minmax(0,1fr));
    gap:12px;
  }

  .module-nav a{
    width:50px;
    height:50px;
    margin:0 auto;
  }

  .module-nav a span{
    display:none;
  }

  .container{
    width:100%;
  }

  .main-header{
    margin:0 auto 34px;
  }

  .hero-content{
    padding:24px 8px 34px;
  }

  .hero-content h1{
    font-size:clamp(2rem,8vw,2.9rem);
    line-height:1.05;
    letter-spacing:-.4px;
    white-space:normal;
  }

  .subtitle{
    margin-top:15px;
    font-size:1rem;
    letter-spacing:1px;
    line-height:1.45;
  }

  .module-card{
    width:100%;
    padding:22px 16px;
    overflow:hidden;
    border-radius:18px;
  }

  .module-card h2,
  .module-card h3{
    overflow-wrap:anywhere;
  }

  .notebook-grid{
    grid-template-columns:minmax(0,1fr);
  }

  .question-card{
    align-items:flex-start;
    flex-direction:column;
    gap:18px;
    padding:20px;
  }

  .question-card a{
    width:100%;
    text-align:center;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    transition-duration: 0.01ms !important;
  }
}

/* ==========================================================================
IPAD / TABLET LAYOUT — FIXED NAVIGATION ALIGNED WITH MODULE CARDS
Desktop and mobile layouts remain unchanged.
========================================================================== */

@media (min-width: 701px) and (max-width: 1180px) {

  body {
    padding: 32px 24px 36px 112px;
  }

  .top-header,
  .main-header,
  .container,
  #site-footer {
    width: 100%;
    max-width: 980px;
  }

  .module-nav {
    position: fixed;
    top: 150px;
    left: 18px;
    right: auto;

    width: 76px;
    max-height: calc(100vh - 180px);
    padding: 12px 8px;

    overflow-x: visible;
    overflow-y: auto;

    border-radius: 24px;

    scrollbar-width: none;
  }

  .module-nav::-webkit-scrollbar {
    display: none;
  }

  .module-nav ul {
    gap: 10px;
  }

  .module-nav a {
    width: 46px;
    height: 46px;
  }

  .module-nav a span {
    left: 56px;
  }

  .main-header {
    margin: -20px auto 42px;
  }

  .hero-content {
    padding: 30px 14px 38px;
  }

  .hero-content h1 {
    font-size: clamp(2.55rem, 5vw, 3.7rem);
    white-space: normal;
  }

  .module-card {
    width: 100%;
    margin: 0 auto 34px;
    padding: 32px;
  }

  .notebook-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}


/* ==========================================================================
IPAD PORTRAIT REFINEMENT
========================================================================== */

@media (min-width: 701px) and (max-width: 900px) {

  body {
    padding-left: 100px;
  }

  .top-header {
    gap: 20px;
    padding: 14px 20px;
  }

  .top-header .university-brand {
    width: clamp(235px, 34vw, 290px);
  }

  .module-nav {
    top: 138px;
    left: 14px;

    width: 70px;
    max-height: calc(100vh - 160px);
  }

  .module-nav a {
    width: 44px;
    height: 44px;
  }

  .module-nav a span {
    display: none;
  }

  .module-card {
    padding: 28px 24px;
  }
}

/* ==========================================================================
TOUCH DEVICES
Keep borders visible when hover is unavailable.
========================================================================== */

@media (hover: none) and (pointer: coarse) {

  .glass-panel,
  .project-card,
  .module-card,
  .feature-card,
  .article-card,
  .cert-card,
  .comparison-col,
  .phase-card,
  .visual,
  .feature-image,
  .page-return,
  .project-return,
  .back-btn,
  .back-link,
  .back-home-btn,
  .return-btn,
  .theme-btn,
  .nav-links a {
    border-color: rgba(255,255,255,.18) !important;
  }

}