/* =========================
   Pink Theme (Modern + Cute)
   ========================= */

:root {
  /* Core palette */
  --bg-1: #fff1f6;        /* blush */
  --bg-2: #ffd7e6;        /* soft pink */
  --surface: rgba(255, 255, 255, 0.92);
  --surface-2: #fff6fa;

  /* Text */
  --text-1: #3a0f24;      /* deep berry */
  --text-2: #5a1b35;      /* berry */
  --muted: #7a3351;

  /* Accent */
  --accent: #ff4d8d;      /* hot pink */
  --accent-2: #ff7aa8;    /* rose */
  --accent-3: #ffb3cc;    /* pastel */
  --accent-deep: #d81b60; /* deep pink */

  /* Borders / shadows */
  --border: #ffd1e1;
  --shadow-1: rgba(216, 27, 96, 0.25);
  --shadow-2: rgba(58, 15, 36, 0.10);

  /* States */
  --focus-ring: rgba(255, 77, 141, 0.28);
  --danger: #d64567;
}

/* Reset */
* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  font-family: "Segoe UI", "Helvetica Neue", sans-serif;
  background: linear-gradient(145deg, var(--bg-1) 0%, var(--bg-2) 100%);
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 12px;
}

.card {
  background: var(--surface);
  backdrop-filter: blur(8px);
  width: 100%;
  max-width: 680px;
  border-radius: 42px 42px 32px 32px;
  box-shadow:
    0 26px 55px -14px var(--shadow-1),
    0 10px 24px -12px var(--shadow-2);
  overflow: hidden;
  border: 1px solid rgba(255, 255, 255, 0.8);
  transition: all 0.25s ease;
}

.panel {
  padding: 28px 24px 32px;
}

/* Headings */
h1,
h2,
h3 {
  font-weight: 650;
  letter-spacing: 0.02em;
  color: var(--text-1);
}

h1 {
  font-size: 2.1rem;
  border-left: 7px solid var(--accent);
  padding-left: 18px;
  margin-bottom: 16px;
  line-height: 1.2;
  text-shadow: 1px 1px 0 rgba(255, 179, 204, 0.8);
}

/* Description */
.desc {
  font-size: 1.1rem;
  color: var(--text-2);
  background: var(--surface-2);
  padding: 20px 18px;
  border-radius: 28px;
  margin: 20px 0 28px;
  border: 1px solid var(--border);
  box-shadow: inset 0 1px 6px rgba(255, 122, 168, 0.14);
}

/* Primary button */
.btn {
  background: linear-gradient(135deg, var(--accent) 0%, var(--accent-2) 100%);
  border: none;
  color: white;
  font-weight: 700;
  font-size: 1.4rem;
  padding: 18px 0;
  width: 100%;
  border-radius: 60px;
  box-shadow:
    0 6px 0 var(--accent-deep),
    0 14px 26px rgba(216, 27, 96, 0.22);
  transition: 0.08s linear;
  cursor: pointer;
  margin-top: 10px;
  letter-spacing: 2px;
}

.btn:active {
  transform: translateY(6px);
  box-shadow:
    0 2px 0 var(--accent-deep),
    0 10px 18px rgba(216, 27, 96, 0.18);
}

.btn:disabled {
  opacity: 0.5;
  transform: translateY(0);
  box-shadow: 0 5px 0 rgba(216, 27, 96, 0.35);
  pointer-events: none;
  filter: grayscale(0.25);
}

/* Inputs */
.input-group {
  margin: 18px 0;
  text-align: left;
}

label {
  font-weight: 650;
  color: var(--muted);
  display: block;
  margin-bottom: 6px;
  font-size: 1rem;
  padding-left: 12px;
}

input {
  width: 100%;
  padding: 16px 20px;
  font-size: 1.05rem;
  border: 2px solid var(--border);
  border-radius: 48px;
  background: white;
  transition: 0.2s;
  outline: none;
  color: var(--text-1);
  box-shadow: 0 8px 16px rgba(255, 77, 141, 0.05);
}

input:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 4px var(--focus-ring), 0 10px 18px rgba(255, 77, 141, 0.10);
}

/* Question box */
.question-box {
  background: rgba(255, 255, 255, 0.85);
  border-radius: 40px;
  padding: 22px 20px;
  margin-bottom: 24px;
  border: 1px solid var(--border);
  box-shadow: 0 10px 22px rgba(255, 77, 141, 0.08);
}

.q-title {
  font-size: 1.3rem;
  font-weight: 650;
  margin-bottom: 22px;
  color: var(--text-1);
}

/* Options */
.option {
  background: #fff0f6;
  border-radius: 100px;
  margin: 12px 0;
  padding: 12px 18px;
  display: flex;
  align-items: center;
  border: 2px solid transparent;
  transition: 0.12s;
  cursor: pointer;
}

.option:hover {
  border-color: rgba(255, 77, 141, 0.25);
  box-shadow: 0 10px 18px rgba(255, 77, 141, 0.10);
}

.option.selected {
  background: #ffe0ec;
  border-color: var(--accent);
  box-shadow: 0 10px 22px rgba(216, 27, 96, 0.18);
}

.option input[type="radio"] {
  width: 22px;
  height: 22px;
  margin-right: 18px;
  accent-color: var(--accent-deep);
  transform: scale(1.1);
  cursor: pointer;
}

.option label {
  margin: 0;
  font-weight: 520;
  font-size: 1.08rem;
  color: var(--text-1);
  width: 100%;
  cursor: pointer;
}

/* Footer controls */
.quiz-footer {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-top: 16px;
}

.counter {
  background: linear-gradient(135deg, #ffb3cc 0%, #ff7aa8 100%);
  color: var(--text-1);
  padding: 12px 22px;
  border-radius: 60px;
  font-weight: 800;
  box-shadow: 0 10px 18px rgba(255, 77, 141, 0.14);
}

/* Nav buttons */
.nav-btn {
  background: #ffe0ec;
  border: 1px solid var(--border);
  padding: 14px 28px;
  border-radius: 48px;
  font-weight: 750;
  font-size: 1.1rem;
  color: var(--text-1);
  box-shadow: 0 5px 0 rgba(216, 27, 96, 0.25);
  cursor: pointer;
}

.nav-btn:active {
  transform: translateY(4px);
  box-shadow: 0 2px 0 rgba(216, 27, 96, 0.25);
}

.nav-btn:disabled {
  opacity: 0.45;
  transform: translateY(0);
  box-shadow: 0 2px 0 rgba(216, 27, 96, 0.2);
  cursor: not-allowed;
}

/* Result */
.result-panel {
  text-align: center;
}

.score-badge {
  background: linear-gradient(135deg, var(--accent) 0%, var(--accent-2) 100%);
  display: inline-block;
  padding: 16px 40px;
  border-radius: 90px;
  font-size: 2.4rem;
  font-weight: 900;
  margin: 25px 0;
  color: white;
  box-shadow: 0 18px 30px rgba(216, 27, 96, 0.20);
}

/* Certificate button (secondary accent but still pink-matched) */
.cert-btn {
  background: linear-gradient(135deg, #ff2f7a 0%, #ff7aa8 100%);
  color: white;
  font-size: 1.6rem;
  padding: 18px;
  border-radius: 50px;
  border: none;
  width: 100%;
  font-weight: 800;
  box-shadow: 0 6px 0 #b8144b;
  margin-top: 20px;
  cursor: pointer;
}

.cert-btn:active {
  transform: translateY(4px);
  box-shadow: 0 2px 0 #b8144b;
}

.cert-btn:disabled {
  opacity: 0.45;
  transform: translateY(0);
  box-shadow: 0 4px 0 rgba(184, 20, 75, 0.55);
  cursor: not-allowed;
}

.small-note {
  color: var(--muted);
  margin: 14px;
}

.hidden {
  display: none;
}

.error-message {
  color: var(--danger);
  font-weight: 650;
  margin-top: 8px;
}

.loading {
  pointer-events: none;
  opacity: 0.7;
}

/* Mobile */
@media (max-width: 480px) {
  h1 {
    font-size: 1.8rem;
  }

  .btn {
    font-size: 1.2rem;
    padding: 15px 0;
  }

  .panel {
    padding: 20px 16px;
  }

  .option {
    padding: 10px 14px;
  }

  .nav-btn {
    padding: 10px 20px;
  }
}