/* ======================================================
   assets/style.css
   Stylesheet for Quiz Competition App v3 (final)
   Theme: green & blue, mobile-friendly
   ====================================================== */

/* Theme variables */
:root {
  --bg: #e8f7ff;
  --card: #ffffff;
  --accent: #0b8457;
  --accent2: #086fa3;
  --text: #0b2633;
}

/* Reset & typography */
* {
  box-sizing: border-box;
  font-family: Inter, system-ui, Arial, Helvetica, sans-serif
}

body {
  margin: 0;
  background: linear-gradient(135deg, var(--bg), #f0fff6);
  color: var(--text);
  min-height: 100vh
}

/* Header & Footer */
.app-header,
.app-footer {
  text-align: center;
  background: linear-gradient(90deg, var(--accent2), var(--accent));
  color: #ffffff;
  padding: 12px 10px;
}

.app-footer {
  margin-top: 18px;
  font-size: 0.95rem;
}

/* Card */
.page-center {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px
}

.card {
  background: var(--card);
  border-radius: 12px;
  box-shadow: 0 6px 18px rgba(11, 38, 51, 0.08);
  padding: 20px;
  max-width: 420px;
  width: 100%;
  margin: 15px auto;  
}

h1,
h2,
h3 {
  color: var(--accent2);
  margin: 0 0 12px 0
}

/* Form */
label {
  display: block;
  margin-top: 8px;
  font-weight: 600
}

input[type="text"] {
  width: 100%;
  padding: 10px;
  border-radius: 8px;
  border: 1px solid #d5e8f1;
  margin-top: 6px
}

/* Buttons */
.btn {
  display: inline-block;
  background: linear-gradient(90deg, var(--accent), var(--accent2));
  color: white;
  padding: 10px 14px;
  border-radius: 10px;
  border: none;
  margin-top: 12px;
  font-weight: 700;
  width: 100%
}

/* Quiz page layout */
.topbar {
  display: flex;
  justify-content: space-between;
  padding: 12px 20px;
  background: linear-gradient(90deg, var(--accent2), var(--accent));
  color: white
}

.quiz-area {
  padding: 20px;
  display: flex;
  flex-direction: column;
  gap: 16px;
  max-width: 820px;
  margin: 20px auto;
align-items: center;
}

.card.hidden {
  display: none
}

#options {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
  margin-top: 12px
}

.opt {
  padding: 10px;
  border-radius: 8px;
  border: 1px solid #cfeaf7;
  background: #f7ffff;
  font-weight: 600
}

#timer {
  margin-top: 10px;
  font-weight: 800;
  color: var(--accent)
}

.countdown {
  font-size: 20px;
  font-weight: 700;
  color: var(--accent2)
}

/* Misc */
.error {
  background: #ffefef;
  border: 1px solid #ffbcbc;
  padding: 10px;
  border-radius: 8px;
  margin-bottom: 10px
}

ol {
  padding-left: 20px
}

/* Responsive */
@media(max-width:520px) {
  #options {
    grid-template-columns: 1fr
  }

  .card {
    padding: 16px
  }
}

/* Newly added lines below*/
.opt.selected-option {
    font-weight: bold;
    border: 3px solid #007bff;
    background: #e7f0ff;
}
.opt {
    border: 1px solid #444;
    padding: 10px;
    border-radius: 6px;
    margin-bottom: 10px;
    text-align: left;
}