/* ===== Embedded Electronics — Shared Theme ===== */
/* -- Tweak brand colors here -- */
:root{
  --brand:#0b66b2;       /* primary blue */
  --brand-2:#00a99d;     /* accent teal */
  --ink:#17202a;         /* text */
  --muted:#6b7a86;
  --bg:#f4f6f8;
  --card:#ffffff;
  --maxw:1100px;
}

*{box-sizing:border-box}
html,body{margin:0;padding:0}
body{font-family:Inter,Segoe UI,Arial,Helvetica,sans-serif;background:var(--bg);color:var(--ink);line-height:1.55}

/* Containers */
.container{width:92%;max-width:var(--maxw);margin:0 auto}

/* Header & Nav */
.site-header{background:linear-gradient(90deg,#032b44,#003b5c);color:#e6f3fb;position:sticky;top:0;z-index:10}
.site-header .container{display:flex;align-items:center;justify-content:space-between;padding:10px 0}
.brand{display:flex;gap:10px;align-items:center;color:#e6f3fb;text-decoration:none}
.brand-logo{height:46px;width:auto}
.brand-name{font-weight:700;letter-spacing:0.2px}
.menu-toggle{display:none;background:transparent;border:0;color:#e6f3fb;font-size:22px;cursor:pointer}
.nav{display:flex;gap:10px}
.nav a{color:#e6f3fb;text-decoration:none;padding:8px 10px;border-radius:8px}
.nav a.active,.nav a:hover{background:rgba(255,255,255,0.08)}

/* Hero */
.hero{background-image:var(--hero);background-size:cover;background-position:center;padding:80px 0;color:white}
.hero .container{max-width:var(--maxw)}
.hero h1{margin:0 0 8px}
.hero p{max-width:720px;margin:0 0 14px}
.hero .btn{margin-right:10px}

/* Page & Cards */
.page{background:var(--card);margin:20px auto;padding:22px;border-radius:12px;box-shadow:0 10px 30px rgba(0,0,0,0.06)}
.page-header{margin-bottom:12px}
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}
@media (max-width:900px){.grid-3{grid-template-columns:repeat(2,1fr)}}
@media (max-width:640px){.grid-3{grid-template-columns:1fr}}
.card{background:linear-gradient(180deg,#fff,#fbfdff);border:1px solid #e6eef5;padding:14px;border-radius:12px;box-shadow:0 10px 24px rgba(14,20,24,0.04)}
.card img{width:100%;height:160px;object-fit:cover;border-radius:8px;margin-bottom:10px}

/* Buttons */
.btn{display:inline-block;background:var(--brand);color:#fff;border:0;padding:10px 14px;border-radius:10px;text-decoration:none;cursor:pointer}
.btn:hover{filter:brightness(0.95)}
.btn.ghost{background:transparent;border:1px solid rgba(11,102,178,0.22);color:var(--brand)}
.btn.small{padding:8px 12px}

/* Forms */
input,select,textarea{width:100%;padding:10px;border:1px solid #d8e2ea;border-radius:8px;background:#fff}
label{display:block;margin:10px 0 4px}
.actions{display:flex;gap:10px;align-items:center;margin:10px 0}
.muted{color:var(--muted)}

/* Quiz Grid Layout */
.quiz-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 20px;
  margin-top: 20px;
}

.quiz-card {
  background: #f9f9f9;
  padding: 20px;
  border-radius: 12px;
  text-align: center;
  text-decoration: none;
  color: #333;
  box-shadow: 0 4px 8px rgba(0,0,0,0.1);
  transition: transform 0.2s ease;
}

.quiz-card:hover {
  transform: translateY(-5px);
  background: #eef5ff;
}

/* Quiz Container */
.quiz-container {
    max-width: 700px;
    margin: 0 auto;
    background: #ffffff;
    padding: 20px;
    border-radius: 10px;
    box-shadow: 0 0 15px rgba(0, 0, 0, 0.1);
    font-family: Arial, sans-serif;
}

/* Question Styling */
.quiz-question {
    margin-bottom: 20px;
}

.quiz-question h3 {
    font-size: 18px;
    margin-bottom: 10px;
}

/* Answer Options */
.quiz-question label {
    display: grid;
    grid-template-columns: auto 1fr; /* Radio button fixed column + text column */
    align-items: start; /* Align radio to top of text */
    gap: 8px;
    padding: 6px 8px;
    background: #f9f9f9;
    border-radius: 5px;
    cursor: pointer;
    transition: background 0.2s;
    text-align: left;
    width: 100%;
    line-height: 1.4;
    word-break: break-word;
}

.quiz-question label:hover {
    background: #ececec;
}

/* Radio Button Styling */
.quiz-question input[type="radio"] {
    margin-top: 3px;
    transform: scale(1.2);
}

/* Submit Button */
.quiz-submit {
    display: block;
    width: 100%;
    padding: 10px;
    background: #2196f3;
    color: white;
    font-size: 16px;
    border: none;
    border-radius: 5px;
    cursor: pointer;
    transition: background 0.2s;
}

.quiz-submit:hover {
    background: #0b7dda;
}

/* Result Styling */
.quiz-result {
    margin-top: 20px;
    padding: 10px;
    background: #e8f5e9;
    border-left: 5px solid #4caf50;
    border-radius: 5px;
}

/* Footer */
.site-footer{background:#032b44;color:#e6f3fb;margin-top:20px;border-top:4px solid rgba(255,255,255,0.06)}
.site-footer .container{padding:14px 0;text-align:center}

/* Responsive Nav */
@media (max-width:880px){
  .menu-toggle{display:block}
  .nav{display:none;position:absolute;right:4%;top:64px;background:#033a56;border:1px solid rgba(255,255,255,0.1);border-radius:12px;padding:10px;flex-direction:column;min-width:200px}
  .nav a{padding:10px}
  .hero{padding:54px 0}
  .page{padding:16px}
}

.social-icons {
  display: flex;
  gap: 15px;
  margin-top: 10px;
}

.social-link {
  font-size: 24px;
  color: #333;
  transition: color 0.3s ease;
}

.social-link:hover {
  color: #0077b5; /* Default LinkedIn Blue, you can customize */
}
.social-link:nth-child(2):hover { color: #1877f2; } /* Facebook */
.social-link:nth-child(3):hover { color: #e4405f; } /* Instagram */
.social-link:nth-child(4):hover { color: #ff0000; } /* YouTube */

.grid-2 {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 1.5rem;
  margin-top: 1.5rem;
}

.video-card {
  background: #fff;
  border-radius: 10px;
  overflow: hidden;
  box-shadow: 0 2px 6px rgba(0,0,0,0.1);
  padding: 0.5rem;
  text-align: center;
}

.video-card p {
  margin-top: 0.5rem;
  font-size: 0.95rem;
  color: #333;
}