body {
  font-family: 'Segoe UI', 'Arial', sans-serif;
  background: #fafbfc;
  color: #222326;
  line-height: 1.7;
}
.container {
  max-width: 900px;
  margin: 2.5rem auto;
  background: #fff;
  border-radius: 14px;
  box-shadow: 0 4px 16px rgba(60,70,90,0.07);
  padding: 2.2rem 2.5rem;
}
h1 {
  font-size: 2.18em;
  text-align: center;
  margin-bottom: 0.15em;
  font-weight: 700;
  color: #a50035;
}
.subtitle {
  text-align: center;
  color: #d35b5b;
  font-size: 1.12em;
  margin-top: 0;
  margin-bottom: 2em;
  font-weight: 500;
}
.section {
  background: #f9fcff;
  border: 2px solid #e2e9ee;
  border-radius: 12px;
  margin-bottom: 2.1em;
  padding: 1.2em 1.4em;
  box-shadow: 0 2px 12px rgba(45,100,180,0.06);
  transition: box-shadow 0.2s;
}
.section:hover {
  box-shadow: 0 4px 20px rgba(45,100,180,0.14);
}
h2 {
  font-size: 1.17em;
  color: #fff;
  background: #00a3b4;
  border-left: 6px solid #a50035;
  padding: 0.63em 0.8em;
  margin-bottom: 1em;
  border-radius: 6px;
  font-weight: 600;
  margin-top: 0;
}
ul, ol {
  margin: 0 0 1.2em 1.7em;
  padding: 0;
  line-height: 1.7;
}
li {
  margin-bottom: 0.62em;
}
.official-note {
  color: #000000;
  background: #ffffff;
  padding: 0.3em 1em 0.3em 0.8em;
  border-radius: 0 7px 7px 0;
  font-weight: 500;
}
.no-bullets {
  list-style-type: none;
  margin-left: 2.5em;
  padding-left: 0;
}
.example-box {
  background: #faf3f3;
  border-radius: 0 7px 7px 0;
  margin: 0.7em 0 0.7em 0.7em;
  padding: 0.52em 1em;
  color: #000000;
  font-size: 1em;
  font-weight: 400;
  position: relative;
  box-shadow: 0 2px 6px rgba(200, 30, 60, 0.04);
  margin-left: 2em;
}
.example-box::before {
  content: "Example:";
  font-weight: bold;
  color: #000000;
  margin-right: 0.5em;
}
.fun-tip {
  color: #000000;
  background: #f1faf1;
  padding: 0.32em 1em 0.32em 3em;
  border-radius: 0 7px 7px 0;
  font-style: italic;
  position: relative;
  margin-left: 2em;
  display: inline-block;
  margin-top: 0.4em;
  margin-bottom: 0.4em;
}
.fun-tip::before {
  content: "😄";
  position: absolute;
  left: 0.68em;
  top: 0.18em;
  font-size: 1.16em;
}
.keyword {
  font-weight: bold;
  color: #cb0000;
  background: none !important;
  border-radius: 0;
  padding: 1px 0;
  position: relative;
  cursor: help;
  transition: background 0.12s;
  border-bottom: 2.5px dotted #cb0000;
}
.keyword[data-tooltip]:hover::after {
  content: attr(data-tooltip);
  position: absolute;
  left: 50%;
  bottom: 140%;
  transform: translateX(-50%);
  min-width: 120px;
  max-width: 260px;
  background: #fffbea;
  color: #d12525;
  padding: 0.25em 0.7em;
  border-radius: 7px;
  font-size: 0.83em;
  white-space: pre-line;
  z-index: 99;
  opacity: 1;
  box-shadow: 0 2px 8px rgba(180,100,30,0.10);
  border: 1px solid #ffe480;
}
.keyword[data-tooltip]:hover::before {
  content: "";
  position: absolute;
  left: 50%;
  bottom: 133%;
  transform: translateX(-50%);
  border-width: 5px;
  border-style: solid;
  border-color: #fffbea transparent transparent transparent;
}
.table-wrap {
  background: #fafbfc;
  border-radius: 7px;
  padding: 0.7em 1em;
  margin: 1em 0 1.2em 0;
  overflow-x: auto;
}
table {
  border-collapse: collapse;
  font-size: 1em;
  margin: 0 auto;
}
th, td {
  border: 1px solid #edd2d2;
  padding: 0.28em 0.72em;
  text-align: center;
  background: #fff;
}
th {
  background: #fff4f4;
  color: #a50035;
}
@media (max-width: 650px) {
  .container { padding: 1rem 0.7rem; }
  table, th, td { font-size: 0.95em;}
}

.past-paper-modal {
  transition: opacity 0.3s ease;
  opacity: 0;
  pointer-events: none;
}

.past-paper-modal.active {
  opacity: 1;
  pointer-events: all;
}

.exam-button {
  display: inline-block;
  margin-top: 0.5em;
  padding: 0.6em 1.2em;
  font-size: 1rem;
  font-weight: 600;
  color: #ffffff;
  background: linear-gradient(135deg, #ff7e5f 0%, #feb47b 100%);
  border: none;
  border-radius: 6px;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
  cursor: pointer;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
  text-shadow: 0 1px 2px rgba(0, 0, 0, 0.2);
}

.exam-button:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 16px rgba(0, 0, 0, 0.2);
}

.exam-button:active {
  transform: translateY(0);
  box-shadow: 0 3px 8px rgba(0, 0, 0, 0.2);
}

.exam-button:focus {
  outline: none;
  box-shadow: 0 0 0 3px rgba(254, 180, 123, 0.6);
}


li > ul > li {
  margin-bottom: 0.18em;
}

li > ul > li .official-note {
  font-weight: 400;
}

.keyword-button {
  display: inline-block;
  margin-top: 0.5em;
  padding: 0.6em 1.2em;
  font-size: 1rem;
  font-weight: 600;
  color: #ffffff;
  background: linear-gradient(135deg, #4e54c8 0%, #8f94fb 100%);
  border: none;
  border-radius: 6px;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
  cursor: pointer;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
  text-shadow: 0 1px 2px rgba(0, 0, 0, 0.2);
}

.keyword-button:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 16px rgba(0, 0, 0, 0.2);
}

.keyword-button:active {
  transform: translateY(0);
  box-shadow: 0 3px 8px rgba(0, 0, 0, 0.2);
}

.keyword-button:focus {
  outline: none;
  box-shadow: 0 0 0 3px rgba(143, 148, 251, 0.6);
}

.button-group {
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 1em;
  margin-top: 1em;
}


.header-container {
  position: relative;       /* ← add this */
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 0rem 1rem 2rem;  /* top, sides, bottom */
}


/* title + icon on one line, centered */
.title-row {
  display: inline-flex;
  align-items: center;
  gap: 0.75rem;
}

/* gradient‑text title */
.section-title {
  font-family: 'Montserrat', sans-serif;
  font-size: 2.5rem;
  font-weight: 700;
  background: linear-gradient(90deg, #6a11cb, #2575fc);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  margin: 0;
}

/* icon sizing */
.title-icon {
  width: 100px;
  height: auto;
}

/* separate underline bar, centered below title-row */
.title-underline {
  width: 80px;
  height: 4px;
  margin-top: 0.5rem;
  background: linear-gradient(90deg, #6a11cb, #2575fc);
  border-radius: 2px;
}

/* subtitle styling */
.section-subtitle {
  font-family: 'Open Sans', sans-serif;
  font-size: 1.125rem;
  color: #555;
  margin: 0.75rem 0 0;
}

.top-right-icon {
   position: absolute;
  top: -1rem;    /* adjust vertical inset */
  right: -2rem;  /* adjust horizontal inset */
  width: 250px;     /* or whatever size you prefer */
  height: auto;
  z-index: 10;     /* ensure it sits above the text */
}