/* theme-dark.css */

:root {
  /* Background colors */
  --bg-main: #0f2f33;
  --bg-card: #173f43;
  --bg-card-soft: #1e4f54;
  --border-soft: #2b6a6f;

  /* Text colors */
  --text-main: #e5f4f5;
  --text-muted: #9fc6c9;
  --text-primary: #e5f4f5;

  /* Brand colors */
  --accent: #4fd1c5;
  --accent-strong: #38b2ac;

  /* Status colors */
  --green: #22c55e;
  --red: #ff6b6b;
  --blue: #60a5fa;

  /* Stat colors - better visible in dark theme */
  --stat-bg: rgba(255,255,255,0.08);
  --green-border: rgba(34,197,94,0.5);
  --red-border: rgba(255,107,107,0.5);
  --blue-border: rgba(96,165,250,0.5);
  --blue-bg: rgba(96,165,250,0.12);

  /* Heading colors */
  --h1-gradient: linear-gradient(135deg, #4fd1c5, #38b2ac, #2dd4bf);
  --h1-shadow: 0 2px 4px rgba(79, 209, 197, 0.2);
  --h2-color: #9fc6c9;

  /* Results page colors */
  --wrong-question-bg: rgba(255, 107, 107, 0.1);
  --wrong-question-border: rgba(255, 107, 107, 0.2);
  --perfect-score-bg: rgba(34, 197, 94, 0.1);
  --perfect-score-border: rgba(34, 197, 94, 0.2);
}

body {
  background: linear-gradient(135deg, #0c2528, #103a3f);
  color: var(--text-main);
}

.card {
  background: var(--bg-card);
  border: 1px solid var(--border-soft);
  box-shadow: 0 20px 40px rgba(0,0,0,0.45);
}

h1 {
  position: relative;
}

h1::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 50%;
  transform: translateX(-50%);
  width: 40px;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--accent), transparent);
  border-radius: 1px;
  opacity: 0.6;
}

.muted {
  color: var(--text-muted);
}

input,
select {
  height: 38px;
  padding: 0 14px;
  font-size: 15px;
  border-radius: 10px;
  border: 1px solid var(--border-soft);
  background: var(--bg-card-soft);
  color: var(--text-main);
}

input:focus,
select:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 2px rgba(79, 209, 197, 0.2);
}

select {
  line-height: normal;
}

/* ===== CUSTOM DROPDOWN ===== */

.custom-select {
  position: relative;
  display: inline-block;
  width: 100%;
  z-index: 1;
}

.custom-select.open {
  z-index: 1000;
}

.custom-select-btn {
  height: 38px;
  padding: 0 40px 0 14px;
  font-size: 15px;
  border-radius: 10px;
  border: 1px solid var(--border-soft);
  background: var(--bg-card-soft);
  color: var(--text-main);
  cursor: pointer;
  display: flex;
  align-items: center;
  width: 100%;
  min-width: 350px;
  position: relative;
  transition: all 0.15s ease;
  font-weight: 400;
  z-index: 200;
}

@media (hover: hover) {
  .custom-select-btn:hover {
    border-color: var(--accent);
    background: rgba(79, 209, 197, 0.1);
  }
}

.custom-select-btn:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 2px rgba(79, 209, 197, 0.2);
}

.custom-select-arrow {
  position: absolute;
  right: 12px;
  width: 0;
  height: 0;
  border: 5px solid transparent;
  border-top-color: var(--text-muted);
  transition: transform 0.15s ease;
}

.custom-select.open .custom-select-arrow {
  transform: rotate(180deg);
}

.custom-select-dropdown {
  position: absolute;
  top: 100%;
  left: 0;
  right: 0;
  min-width: 350px;
  background: var(--bg-card-soft);
  border: 1px solid var(--border-soft);
  border-radius: 10px;
  box-shadow: 0 8px 25px rgba(0, 0, 0, 0.4);
  z-index: 1100;
  max-height: 320px;
  overflow-y: auto;
  opacity: 0;
  visibility: hidden;
  transform: translateY(-8px);
  transition: all 0.15s ease;
}

.custom-select.open .custom-select-dropdown {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.custom-select-option {
  padding: 8px 14px;
  cursor: pointer;
  transition: background 0.15s ease;
  font-size: 14px;
  color: var(--text-main);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

@media (hover: hover) {
  .custom-select-option:hover {
    background: rgba(79, 209, 197, 0.1);
  }
}

.custom-select-option.selected {
  background: rgba(79, 209, 197, 0.15);
  font-weight: 400;
}

.custom-select-option:first-child {
  border-radius: 10px 10px 0 0;
}

.custom-select-option:last-child {
  border-radius: 0 0 10px 10px;
}


/* Answer cards */
.opt label {
  display: block;
  padding: 16px 18px;
  border-radius: 14px;
  border: 2px solid transparent;
  background: var(--bg-card-soft);
  cursor: pointer;
  transition: all 0.15s ease;
}

@media (hover: hover) {
  .opt label:hover {
    border-color: var(--accent);
    background: rgba(79, 209, 197, 0.1);
  }
}

.opt input:checked + label {
  border-color: var(--accent-strong);
  background: rgba(79, 209, 197, 0.15);
}

.opt label.correct {
  border-color: var(--green) !important;
  background: rgba(34,197,94,0.15) !important;
  box-shadow: 0 0 0 2px var(--green) inset;
}

.opt label.wrong {
  border-color: var(--red) !important;
  background: rgba(255,107,107,0.18) !important;
  box-shadow: 0 0 0 2px var(--red) inset;
}

/* Buttons */
button {
  padding: 12px 20px;
  border-radius: 12px;
  border: none;
  background: var(--accent);
  color: #083336;
  font-weight: 700;
  cursor: pointer;
  transition: background 0.15s ease;
}

@media (hover: hover) {
  button:hover {
    background: var(--accent-strong);
  }
}

button:disabled {
  background: #2d5256;
  color: #64888c;
  cursor: not-allowed;
}

button.secondary {
  background: #355f63;
  color: var(--text-main);
}

@media (hover: hover) {
  button.secondary:hover {
    background: #2d5256;
  }
}

/* Normalize number input appearance */
input[type="number"] {
  appearance: textfield;
  -moz-appearance: textfield;
}

input[type="number"]::-webkit-inner-spin-button,
input[type="number"]::-webkit-outer-spin-button {
  -webkit-appearance: none;
  margin: 0;
  background: transparent;
}