/* 帮帮我 — 全局公共样式 */
:root {
  --ink: #1a2e2a;
  --ink-soft: #3d524c;
  --muted: #6b7f78;
  --line: rgba(26, 46, 42, 0.12);
  --surface: rgba(255, 255, 255, 0.72);
  --surface-solid: #f3f8f5;
  --accent: #e85d4c;
  --accent-hover: #d14a3a;
  --teal: #2a9d8f;
  --teal-deep: #1d7a6f;
  --bg-top: #d8efe8;
  --bg-mid: #eef6f1;
  --bg-bottom: #f7faf8;
  --shadow-soft: 0 12px 40px rgba(26, 46, 42, 0.08);
  --radius: 10px;
  --btn-radius: var(--radius);
  --font-brand: -apple-system, BlinkMacSystemFont, "SF Pro Display", "PingFang SC", "Helvetica Neue", sans-serif;
  --font-body: -apple-system, BlinkMacSystemFont, "SF Pro Text", "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  --wrap: 720px;
  --body-gradient: linear-gradient(180deg, #f5f5f7 0%, #ffffff 100%);
}

*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-body);
  color: var(--ink);
  line-height: 1.65;
  min-height: 100vh;
  background: var(--body-gradient);
  background-attachment: fixed;
}

a {
  color: var(--teal-deep);
  text-decoration: none;
}
a:hover {
  color: var(--accent);
}

img {
  max-width: 100%;
  display: block;
}

button,
input,
textarea {
  font: inherit;
  color: inherit;
}

.wrap {
  width: min(100% - 2rem, var(--wrap));
  margin-inline: auto;
}

/* 顶栏品牌 */
.site-bar {
  padding: 1.25rem 0 0.5rem;
}

.brand {
  font-family: var(--font-brand);
  font-size: clamp(1.75rem, 4vw, 2.35rem);
  letter-spacing: 0.04em;
  color: var(--ink);
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  animation: brand-in 0.7s ease both;
  text-decoration: none;
}

.brand:hover {
  color: var(--ink);
}

.brand-logo {
  width: 36px;
  height: 36px;
  border-radius: 9px;
  flex-shrink: 0;
  display: block;
  object-fit: cover;
}

.brand-text {
  display: inline-flex;
  align-items: baseline;
  gap: 0;
}

.brand-text span[data-i18n="brandAccent"],
.brand span[data-i18n="brandAccent"] {
  color: var(--accent);
}

.brand span {
  color: inherit;
}

.brand .brand-text span:last-child {
  color: var(--accent);
}

@keyframes brand-in {
  from {
    opacity: 0;
    transform: translateY(-8px);
  }
  to {
    opacity: 1;
    transform: none;
  }
}

/* 按钮 */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.4rem;
  border: none;
  cursor: pointer;
  border-radius: var(--btn-radius);
  padding: 0.7rem 1.25rem;
  font-weight: 600;
  transition: transform 0.18s ease, background 0.18s ease, box-shadow 0.18s ease;
}

.btn:active {
  transform: scale(0.98);
}

.btn-primary {
  background: var(--accent);
  color: #fff;
}

.btn-primary:hover {
  background: var(--accent-hover);
  box-shadow: 0 8px 24px rgba(232, 93, 76, 0.28);
}

.btn-ghost {
  background: transparent;
  color: var(--ink-soft);
  border: 1px solid var(--line);
}

.btn-ghost:hover {
  border-color: var(--teal);
  color: var(--teal-deep);
}

.btn-danger {
  background: transparent;
  color: #c0392b;
  border: 1px solid rgba(192, 57, 43, 0.35);
}

.btn-danger:hover {
  background: rgba(192, 57, 43, 0.08);
  border-color: #c0392b;
  color: #a93226;
}

.btn-block {
  width: 100%;
}

/* 表单 */
.field {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
  margin-bottom: 1rem;
}

.field label {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--ink-soft);
}

.field input,
.field textarea,
.field select {
  width: 100%;
  border: 1px solid var(--line);
  background: #fff;
  border-radius: var(--radius);
  padding: 0.75rem 0.9rem;
  outline: none;
  transition: border-color 0.18s ease, box-shadow 0.18s ease;
}

.field select {
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath fill='%236b7f78' d='M1 1l5 5 5-5'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 0.9rem center;
  padding-right: 2.2rem;
}

.field input:focus,
.field textarea:focus,
.field select:focus {
  border-color: var(--teal);
  box-shadow: 0 0 0 3px rgba(42, 157, 143, 0.15);
}

.tag-picker {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.tag-picker label {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.35rem 0.7rem;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--ink-soft);
  cursor: pointer;
  user-select: none;
  transition: border-color 0.15s ease, background 0.15s ease, color 0.15s ease;
}

.tag-picker label:has(input:checked) {
  border-color: var(--teal);
  background: rgba(42, 157, 143, 0.1);
  color: var(--teal-deep);
}

.tag-picker input {
  width: auto;
  margin: 0;
  accent-color: var(--teal);
}

.tax-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  align-items: center;
}

.tax-cat {
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  color: var(--teal-deep);
  background: rgba(42, 157, 143, 0.12);
  padding: 0.15rem 0.5rem;
  border-radius: 4px;
}

.tax-tag {
  font-size: 0.72rem;
  color: var(--muted);
  border: 1px solid var(--line);
  padding: 0.12rem 0.45rem;
  border-radius: 4px;
}

.field textarea {
  min-height: 120px;
  resize: vertical;
}

.field-hint {
  font-size: 0.75rem;
  color: var(--muted);
}

/* 昵称行：输入框 + 随机按钮 */
.nickname-row {
  display: flex;
  gap: 0.5rem;
  align-items: stretch;
}
.nickname-row input {
  flex: 1;
  min-width: 0;
}
.nickname-roll {
  flex-shrink: 0;
  padding: 0 0.85rem;
  font-size: 1.1rem;
  line-height: 1;
  transition: transform 0.25s ease, background 0.18s ease;
}
.nickname-roll:hover {
  transform: rotate(180deg) scale(1.05);
}

/* 弹窗 */
.modal-mask {
  position: fixed;
  inset: 0;
  background: rgba(26, 46, 42, 0.45);
  display: flex;
  align-items: flex-end;
  justify-content: center;
  z-index: 100;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.25s ease, visibility 0.25s ease;
  padding: 1rem;
}

.modal-mask.open {
  opacity: 1;
  visibility: visible;
}

.modal {
  width: min(100%, 560px);
  background: #fff;
  border-radius: 12px 12px 4px 4px;
  box-shadow: var(--shadow-soft);
  transform: translateY(24px);
  transition: transform 0.28s cubic-bezier(0.22, 1, 0.36, 1);
  max-height: min(90vh, 640px);
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

.modal-mask.open .modal {
  transform: none;
}

@media (min-width: 640px) {
  .modal-mask {
    align-items: center;
  }
  .modal {
    border-radius: 8px;
  }
}

.modal-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1.25rem 1.5rem;
  border-bottom: 1px solid var(--line);
  flex-shrink: 0;
}

.modal-head h2 {
  font-family: var(--font-brand);
  font-size: 1.5rem;
  font-weight: 400;
  margin: 0;
}

.modal-close {
  background: none;
  border: none;
  font-size: 1.5rem;
  line-height: 1;
  cursor: pointer;
  color: var(--muted);
  padding: 0.25rem;
}

.modal-close:hover {
  color: var(--ink);
}

/* 表单：flex 容器，fields 区域滚动 */
.modal > form {
  display: flex;
  flex-direction: column;
  flex: 1;
  overflow: hidden;
  padding: 0;
}

.modal-fields {
  flex: 1;
  overflow-y: auto;
  padding: 1.25rem 1.5rem;
}

/* 弹窗底部操作区：固定在底部 */
.modal-actions {
  display: flex;
  gap: 0.75rem;
  justify-content: flex-end;
  padding: 1rem 1.5rem;
  border-top: 1px solid var(--line);
  flex-shrink: 0;
  background: var(--surface-solid, #fff);
}

.modal-close {
  background: none;
  border: none;
  font-size: 1.5rem;
  line-height: 1;
  cursor: pointer;
  color: var(--muted);
  padding: 0.25rem;
}

.modal-close:hover {
  color: var(--ink);
}

/* Toast / 加载 */
.toast {
  position: fixed;
  left: 50%;
  bottom: 2rem;
  transform: translateX(-50%) translateY(12px);
  background: var(--ink);
  color: #fff;
  padding: 0.65rem 1.15rem;
  border-radius: var(--radius);
  font-size: 0.9rem;
  z-index: 200;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.25s ease, transform 0.25s ease;
  max-width: min(90vw, 360px);
  text-align: center;
}

.toast.show {
  opacity: 1;
  transform: translateX(-50%) translateY(0);
}

.toast.error {
  background: var(--accent);
}

.loading-bar {
  position: fixed;
  top: 0;
  left: 0;
  height: 3px;
  width: 0;
  background: linear-gradient(90deg, var(--teal), var(--accent));
  z-index: 300;
  transition: width 0.3s ease, opacity 0.3s ease;
  opacity: 0;
}

.loading-bar.active {
  opacity: 1;
  width: 70%;
}

.loading-bar.done {
  width: 100%;
  opacity: 0;
}

/* 空状态 / 错误 */
.state-msg {
  text-align: center;
  padding: 3rem 1rem;
  color: var(--muted);
  animation: fade-up 0.5s ease both;
}

.state-msg strong {
  display: block;
  color: var(--ink-soft);
  font-size: 1.05rem;
  margin-bottom: 0.35rem;
}

@keyframes fade-up {
  from {
    opacity: 0;
    transform: translateY(12px);
  }
  to {
    opacity: 1;
    transform: none;
  }
}

/* 页脚 */
.site-foot {
  margin-top: 4rem;
  padding: 2rem 0 2.5rem;
  text-align: center;
  font-size: 0.8rem;
  color: var(--muted);
  border-top: 1px solid var(--line);
}

.back-link {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  font-size: 0.9rem;
  color: var(--ink-soft);
  margin-bottom: 1rem;
}

.back-link:hover {
  color: var(--accent);
}

/* 发帖验证码 / 超限弹窗 */
.captcha-field[hidden] {
  display: none !important;
}
.captcha-row {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  flex-wrap: wrap;
}
.captcha-question {
  font-weight: 700;
  font-size: 1.05rem;
  color: var(--teal-deep);
  font-variant-numeric: tabular-nums;
  min-width: 7.5rem;
  letter-spacing: 0.02em;
}
.captcha-row input[data-captcha-answer] {
  width: 5.5rem;
  text-align: center;
  font-weight: 600;
}
.captcha-refresh {
  padding: 0.45rem 0.7rem;
  min-width: auto;
}
.post-limit-mask.open {
  z-index: 240;
}
.post-limit-msg {
  margin: 0 0 1rem;
  color: var(--ink-soft);
  line-height: 1.6;
}
.post-limit-email-wrap {
  margin: 0;
  font-size: 0.95rem;
  color: var(--muted);
}
.post-limit-email {
  font-weight: 700;
  color: var(--teal-deep);
  word-break: break-all;
}