/* ═══════════════════════════════════════════
   UPLOAD GUARD — Captcha Modal Styles
   ═══════════════════════════════════════════
   Dùng chung biến CSS từ store.css (dark theme).
   Load file này SAU store.css trong store.html.
   ═══════════════════════════════════════════ */

/* ── Captcha Box ── */
.captcha-box {
  max-width: 380px;
  padding: 2rem 2rem 1.5rem;
}

.captcha-title {
  font-family: var(--font-display);
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--text);
  margin-bottom: .3rem;
}

.captcha-subtitle {
  font-size: 13px;
  color: var(--muted);
  margin-bottom: 1.5rem;
}

/* ── Captcha SVG canvas + nút đổi mã ── */
.captcha-canvas-wrap {
  position: relative;
  display: flex;
  align-items: center;
  gap: .5rem;
  margin-bottom: 1.2rem;
}

.captcha-canvas {
  flex: 1;
  border-radius: var(--r);
  overflow: hidden;
  border: 1px solid var(--border2);
  line-height: 0; /* tránh gap dưới svg */
  user-select: none;
  -webkit-user-drag: none;
}
.captcha-canvas svg {
  width: 100%;
  height: auto;
  display: block;
}

/* Nút đổi mã mới ↻ */
.captcha-refresh {
  width: 40px;
  height: 40px;
  flex-shrink: 0;
  border-radius: 50%;
  border: 1px solid var(--border2);
  background: var(--surface2);
  color: var(--muted);
  font-size: 1.25rem;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all .2s;
}
.captcha-refresh:hover {
  border-color: var(--accent);
  color: var(--accent);
  background: rgba(201,160,255,.08);
  transform: rotate(90deg);
}
.captcha-refresh:active {
  transform: rotate(180deg);
}

/* ── Input đáp án ── */
.captcha-input {
  width: 100%;
  padding: .75rem 1rem;
  font-size: 1.3rem;
  font-weight: 700;
  text-align: center;
  letter-spacing: .35em;
  text-transform: uppercase;
  background: var(--bg2);
  border: 2px solid var(--border2);
  border-radius: var(--r-sm);
  color: var(--text);
  font-family: 'Courier New', 'Fira Code', monospace;
  outline: none;
  transition: border-color .2s, box-shadow .2s;
}
.captcha-input:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(201,160,255,.15);
}
.captcha-input::placeholder {
  color: var(--muted);
  font-weight: 400;
  font-size: .85rem;
  letter-spacing: .05em;
  text-transform: none;
  font-family: var(--font);
}

/* ── Thông báo lỗi ── */
.captcha-error {
  min-height: 1.3rem;
  font-size: 13px;
  color: var(--danger);
  margin-top: .5rem;
  margin-bottom: .5rem;
  transition: opacity .2s;
}

/* ── Nút hành động ── */
.captcha-actions {
  display: flex;
  gap: .6rem;
  margin-top: .3rem;
}

.captcha-btn-cancel,
.captcha-btn-submit {
  flex: 1;
  padding: .7rem 1rem;
  font-size: 14px;
  font-weight: 600;
  border-radius: var(--r-sm);
  border: none;
  font-family: var(--font);
  cursor: pointer;
  transition: all .2s;
}

.captcha-btn-cancel {
  background: var(--surface2);
  color: var(--muted);
  border: 1px solid var(--border2);
}
.captcha-btn-cancel:hover {
  background: var(--surface3);
  color: var(--text2);
}

.captcha-btn-submit {
  background: linear-gradient(135deg, var(--accent), #a67fff);
  color: #fff;
  box-shadow: 0 2px 12px rgba(201,160,255,.25);
}
.captcha-btn-submit:hover {
  box-shadow: 0 4px 20px rgba(201,160,255,.35);
  transform: translateY(-1px);
}
.captcha-btn-submit:active {
  transform: translateY(0);
}

/* ── Thông tin lượt còn lại ── */
.captcha-remaining {
  margin-top: .85rem;
  font-size: 13px;
  font-weight: 600;
  color: var(--accent2);
  padding: .6rem .85rem;
  border-radius: var(--r-sm);
  background: rgba(139,184,255,.08);
  border: 1px solid rgba(139,184,255,.15);
  text-align: center;
}

/* ── Shake animation (sai mã) ── */
@keyframes captcha-shake {
  0%, 100% { transform: translateX(0); }
  15% { transform: translateX(-8px); }
  30% { transform: translateX(7px); }
  45% { transform: translateX(-6px); }
  60% { transform: translateX(4px); }
  75% { transform: translateX(-2px); }
}
.captcha-box.shake {
  animation: captcha-shake .5s ease;
}

/* ── Responsive ── */
@media (max-width: 480px) {
  .captcha-box {
    padding: 1.5rem 1.25rem 1.25rem;
  }
  .captcha-canvas-wrap {
    gap: .4rem;
  }
  .captcha-refresh {
    width: 36px;
    height: 36px;
    font-size: 1.1rem;
  }
  .captcha-input {
    font-size: 1.1rem;
    padding: .65rem .8rem;
    letter-spacing: .3em;
  }
}