/* ============================================================================
   打印中心 · 上传页样式
   - 纯 CSS，无构建步骤、无外部依赖（EdgeOne Pages 直接托管 public/）
   - 移动端优先：默认单列，>=880px 才变成两栏
   - 深浅色随系统设置（prefers-color-scheme），不额外引入开关
   ========================================================================== */

/* ---------------------------------------------------------------- 设计变量 */
:root {
  color-scheme: light dark;

  --bg:            #f7f8fb;
  --bg-grad:       radial-gradient(1100px 520px at 12% -8%, #e5ecff 0%, transparent 62%),
                   radial-gradient(900px 460px at 92% 0%, #eafaf3 0%, transparent 58%);
  --surface:       #ffffff;
  --surface-2:     #f2f4f9;
  --border:        #e3e6ef;
  --border-strong: #cbd1e0;

  --text:          #171a21;
  --text-2:        #4d5566;
  --text-3:        #7b8398;

  --brand:         #2f6df6;
  --brand-hover:   #245ad9;
  --brand-soft:    #e8efff;
  --brand-ring:    rgba(47, 109, 246, .32);

  --ok:            #10894f;
  --ok-soft:       #e6f7ee;
  --warn:          #a35a00;
  --warn-soft:     #fff4e0;
  --danger:        #c62b3f;
  --danger-soft:   #ffe9ec;

  --radius:        16px;
  --radius-sm:     11px;
  --radius-pill:   999px;

  --shadow-1: 0 1px 2px rgba(16, 24, 40, .05);
  --shadow-2: 0 8px 26px -12px rgba(16, 24, 40, .22);
  --shadow-3: 0 24px 60px -20px rgba(16, 24, 40, .35);

  --font: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
          "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", Roboto,
          "Helvetica Neue", Arial, sans-serif;
  --mono: ui-monospace, SFMono-Regular, Menlo, Consolas, "Liberation Mono", monospace;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg:            #0f1115;
    --bg-grad:       radial-gradient(1100px 520px at 12% -8%, #16233f 0%, transparent 60%),
                     radial-gradient(900px 460px at 92% 0%, #102b23 0%, transparent 56%);
    --surface:       #171a21;
    --surface-2:     #1e222b;
    --border:        #2a2f3a;
    --border-strong: #3a4150;

    --text:          #eef1f7;
    --text-2:        #aab2c4;
    --text-3:        #7d869a;

    --brand:         #6a9bff;
    --brand-hover:   #85adff;
    --brand-soft:    #1b2740;
    --brand-ring:    rgba(106, 155, 255, .35);

    --ok:            #4ade9b;
    --ok-soft:       #12291f;
    --warn:          #f2b458;
    --warn-soft:     #2b2113;
    --danger:        #ff8095;
    --danger-soft:   #2e1419;

    --shadow-1: 0 1px 2px rgba(0, 0, 0, .4);
    --shadow-2: 0 8px 26px -12px rgba(0, 0, 0, .6);
    --shadow-3: 0 24px 60px -20px rgba(0, 0, 0, .75);
  }
}

/* ---------------------------------------------------------------- 基础重置 */
*, *::before, *::after { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  min-height: 100dvh;
  font-family: var(--font);
  font-size: 16px;
  line-height: 1.65;
  color: var(--text);
  background-color: var(--bg);
  background-image: var(--bg-grad);
  background-repeat: no-repeat;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

h1, h2, h3, p, ol, ul { margin: 0; }
ol, ul { padding: 0; list-style: none; }
strong { font-weight: 650; }
button { font: inherit; color: inherit; }

:focus-visible {
  outline: 2px solid var(--brand);
  outline-offset: 2px;
  border-radius: 6px;
}

.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
  z-index: 100;
  padding: .6rem 1rem;
  background: var(--surface);
  border-radius: 0 0 var(--radius-sm) 0;
}
.skip-link:focus { left: 0; }

/* ---------------------------------------------------------------- 顶栏 */
.topbar {
  position: sticky;
  top: 0;
  z-index: 30;
  backdrop-filter: saturate(180%) blur(14px);
  -webkit-backdrop-filter: saturate(180%) blur(14px);
  background: color-mix(in srgb, var(--bg) 82%, transparent);
  border-bottom: 1px solid var(--border);
  padding-top: env(safe-area-inset-top);
}

.topbar__inner {
  max-width: 1120px;
  margin: 0 auto;
  padding: .7rem 1rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: .75rem;
}

.brand { display: flex; align-items: center; gap: .6rem; min-width: 0; }

.brand__mark {
  flex: none;
  width: 38px; height: 38px;
  display: grid; place-items: center;
  border-radius: 11px;
  color: #fff;
  background: linear-gradient(150deg, var(--brand), #7a5cf0);
  box-shadow: var(--shadow-2);
}
.brand__mark svg { width: 21px; height: 21px; }

.brand__text { display: flex; flex-direction: column; min-width: 0; line-height: 1.25; }
.brand__text strong { font-size: 1.02rem; letter-spacing: .01em; }
.brand__text small { color: var(--text-3); font-size: .74rem; }

/* 登录态 */
.account { display: flex; align-items: center; gap: .5rem; flex: none; }

.account__who {
  display: none;
  align-items: center;
  gap: .4rem;
  max-width: 11rem;
  padding: .32rem .6rem;
  border: 1px solid var(--border);
  background: var(--surface);
  border-radius: var(--radius-pill);
  font-size: .8rem;
  color: var(--text-2);
}
.account__who b { color: var(--text); font-weight: 600; overflow: hidden;
                  text-overflow: ellipsis; white-space: nowrap; }
.account__dot { width: 7px; height: 7px; border-radius: 50%; background: var(--ok); flex: none; }
.account__hint { font-size: .8rem; color: var(--text-3); }

@media (min-width: 560px) { .account__who { display: inline-flex; } }

/* ---------------------------------------------------------------- 布局 */
.wrap {
  max-width: 1120px;
  margin: 0 auto;
  padding: 1.5rem 1rem calc(2.5rem + env(safe-area-inset-bottom));
}

.hero { margin-bottom: 1.4rem; max-width: 46rem; }
.hero h1 {
  font-size: clamp(1.42rem, 5.2vw, 2.05rem);
  line-height: 1.28;
  letter-spacing: -.015em;
  font-weight: 700;
}
.hero p { margin-top: .6rem; color: var(--text-2); font-size: .95rem; }

.layout { display: grid; gap: 1.1rem; grid-template-columns: 1fr; }
@media (min-width: 880px) {
  .layout { grid-template-columns: minmax(0, 1.62fr) minmax(0, 1fr); gap: 1.4rem; align-items: start; }
}

/* ---------------------------------------------------------------- 卡片 */
.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow-2);
  padding: 1.15rem;
}
@media (min-width: 640px) { .card { padding: 1.5rem; } }

.card--flat { box-shadow: var(--shadow-1); }

.card__title {
  font-size: 1.06rem;
  font-weight: 650;
  letter-spacing: -.01em;
  margin-bottom: 1.1rem;
}
.card__title--sm { font-size: .95rem; margin-bottom: .7rem; }

.side { display: grid; gap: 1.1rem; }

.steps { display: grid; gap: .6rem; counter-reset: step; }
.steps li {
  display: grid;
  grid-template-columns: 1.5rem 1fr;
  gap: .6rem;
  align-items: start;
  font-size: .88rem;
  color: var(--text-2);
}
.steps li span {
  display: grid; place-items: center;
  width: 1.5rem; height: 1.5rem;
  border-radius: 50%;
  background: var(--brand-soft);
  color: var(--brand);
  font-size: .76rem;
  font-weight: 700;
}

.side__text { font-size: .88rem; color: var(--text-2); }

/* ---------------------------------------------------------------- 表单 */
.field { margin-bottom: 1.15rem; }
.field--fieldset { border: 0; padding: 0; margin-inline: 0; }

.field__label {
  display: flex;
  align-items: center;
  gap: .4rem;
  font-size: .88rem;
  font-weight: 620;
  color: var(--text);
  margin-bottom: .5rem;
}

.field__hint {
  margin-top: .5rem;
  font-size: .78rem;
  line-height: 1.55;
  color: var(--text-3);
}
.field__hint--center { text-align: center; margin-top: .8rem; }
.field__hint strong { color: var(--text-2); }

.field__error {
  margin-top: .55rem;
  padding: .55rem .7rem;
  border-radius: var(--radius-sm);
  background: var(--danger-soft);
  color: var(--danger);
  font-size: .82rem;
  font-weight: 550;
}

.tag {
  display: inline-block;
  padding: .1rem .45rem;
  border-radius: var(--radius-pill);
  font-size: .68rem;
  font-weight: 600;
  letter-spacing: .02em;
}
.tag--soft { background: var(--surface-2); color: var(--text-3); }
.tag--required { background: var(--danger-soft); color: var(--danger); }

/* 常用交付时间快捷按钮 */
.presets {
  display: flex;
  flex-wrap: wrap;
  gap: .4rem;
  margin-top: .55rem;
}
.presets:empty { display: none; }
.preset {
  padding: .32rem .7rem;
  min-height: 2rem;
  border: 1px solid var(--border);
  border-radius: var(--radius-pill);
  background: var(--surface-2);
  color: var(--text-2);
  font-size: .8rem;
  font-weight: 550;
  cursor: pointer;
  transition: border-color .15s, color .15s, background-color .15s;
  -webkit-tap-highlight-color: transparent;
}
.preset:hover { border-color: var(--brand); color: var(--brand); background: var(--brand-soft); }
.preset:active { transform: translateY(1px); }

/* datetime-local：让整块可点，并统一日历图标的颜色（各浏览器默认是黑的） */
.input--datetime { min-height: 2.9rem; }
.input--datetime::-webkit-calendar-picker-indicator {
  cursor: pointer;
  opacity: .65;
  filter: var(--calendar-icon-filter, none);
}
@media (prefers-color-scheme: dark) {
  .input--datetime { color-scheme: dark; }
}

.input {
  width: 100%;
  padding: .7rem .8rem;
  font-size: 1rem;              /* >=16px 可避免 iOS 聚焦时自动放大 */
  color: var(--text);
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  transition: border-color .15s, box-shadow .15s, background-color .15s;
}
.input::placeholder { color: var(--text-3); }
.input:focus {
  outline: none;
  background: var(--surface);
  border-color: var(--brand);
  box-shadow: 0 0 0 3px var(--brand-ring);
}
.input--area { resize: vertical; min-height: 3.1rem; line-height: 1.6; }
.input--error { border-color: var(--danger); }

/* ---------------------------------------------------------------- 拖放区 */
.dropzone {
  position: relative;
  border: 1.5px dashed var(--border-strong);
  border-radius: var(--radius);
  background: var(--surface-2);
  cursor: pointer;
  transition: border-color .15s, background-color .15s, transform .12s;
}
.dropzone:hover { border-color: var(--brand); }
.dropzone:active { transform: scale(.995); }
.dropzone.is-dragging {
  border-color: var(--brand);
  background: var(--brand-soft);
}
.dropzone__input {
  position: absolute;
  width: 1px; height: 1px;
  padding: 0; margin: -1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
  border: 0;
}
.dropzone__inner {
  display: grid;
  justify-items: center;
  gap: .35rem;
  padding: 1.9rem 1rem;
  text-align: center;
}
.dropzone__icon {
  width: 46px; height: 46px;
  display: grid; place-items: center;
  border-radius: 50%;
  /* 深色模式下 brand-soft 是深蓝底、brand 是浅蓝图标，对比度勉强；
     加一层描边让两套主题下都清晰可见 */
  color: var(--brand);
  background: var(--brand-soft);
  border: 1.5px solid color-mix(in srgb, var(--brand) 42%, transparent);
  margin-bottom: .2rem;
}
.dropzone__icon svg { width: 24px; height: 24px; }
.dropzone__title { font-weight: 620; font-size: .95rem; }
.dropzone__hint { font-size: .78rem; color: var(--text-3); }

/* 已选文件 */
.chosen {
  display: flex;
  align-items: center;
  gap: .7rem;
  margin-top: .7rem;
  padding: .65rem .75rem;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--surface);
}
.chosen__icon { font-size: 1.3rem; flex: none; }
.chosen__meta { min-width: 0; flex: 1; display: grid; }
.chosen__name {
  font-size: .9rem;
  font-weight: 600;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.chosen__sub { font-size: .76rem; color: var(--text-3); }
.chosen__clear {
  flex: none;
  width: 30px; height: 30px;
  display: grid; place-items: center;
  border: 0;
  border-radius: 50%;
  background: transparent;
  color: var(--text-3);
  font-size: 1.15rem;
  line-height: 1;
  cursor: pointer;
  transition: background-color .15s, color .15s;
}
.chosen__clear:hover { background: var(--danger-soft); color: var(--danger); }

/* ---------------------------------------------------------------- 份数步进器 */
.copies { display: grid; gap: .8rem; grid-template-columns: 1fr 1fr; }

.stepper {
  display: grid;
  gap: .35rem;
  padding: .7rem;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--surface-2);
}
.stepper__label { font-size: .8rem; font-weight: 600; color: var(--text-2); }

.stepper__control {
  display: grid;
  grid-template-columns: 2.6rem minmax(0, 1fr) 2.6rem;
  align-items: stretch;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  overflow: hidden;
  background: var(--surface);
}
.stepper__btn {
  border: 0;
  background: transparent;
  color: var(--text-2);
  font-size: 1.2rem;
  font-weight: 600;
  cursor: pointer;
  transition: background-color .12s, color .12s;
  min-height: 2.75rem;           /* 触摸目标 >= 44px */
}
.stepper__btn:hover { background: var(--brand-soft); color: var(--brand); }
.stepper__btn:disabled { opacity: .35; cursor: not-allowed; }
.stepper__btn:disabled:hover { background: transparent; color: var(--text-2); }

.stepper__control input {
  width: 100%;
  border: 0;
  border-inline: 1px solid var(--border);
  background: transparent;
  color: var(--text);
  text-align: center;
  font-size: 1.05rem;
  font-weight: 650;
  font-variant-numeric: tabular-nums;
  min-height: 2.75rem;
  -moz-appearance: textfield;
  appearance: textfield;
}
.stepper__control input::-webkit-outer-spin-button,
.stepper__control input::-webkit-inner-spin-button { -webkit-appearance: none; margin: 0; }
.stepper__control input:focus { outline: none; background: var(--brand-soft); }

.stepper.is-error .stepper__control { border-color: var(--danger); }

/* ---------------------------------------------------------------- 按钮 */
.btn {
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: .5rem;
  min-height: 3rem;              /* 大触摸目标 */
  padding: .8rem 1.2rem;
  border: 1px solid transparent;
  border-radius: var(--radius-sm);
  font-size: 1rem;
  font-weight: 650;
  letter-spacing: .01em;
  cursor: pointer;
  transition: background-color .15s, border-color .15s, transform .1s, box-shadow .15s;
  -webkit-tap-highlight-color: transparent;
}
.btn--block { width: 100%; }
.btn--primary {
  color: #fff;
  background: linear-gradient(180deg, var(--brand), var(--brand-hover));
  box-shadow: var(--shadow-2);
}
.btn--primary:hover { filter: brightness(1.05); }
.btn--primary:active { transform: translateY(1px); }
.btn--ghost {
  color: var(--text);
  background: var(--surface);
  border-color: var(--border);
}
.btn--ghost:hover { border-color: var(--brand); color: var(--brand); }
.btn--sm { min-height: 2.3rem; padding: .4rem .8rem; font-size: .82rem; }
.btn[disabled], .btn[aria-disabled="true"] { opacity: .6; cursor: not-allowed; transform: none; }

.btn__spinner {
  display: none;
  width: 1.05rem; height: 1.05rem;
  border: 2px solid currentColor;
  border-right-color: transparent;
  border-radius: 50%;
  animation: spin .7s linear infinite;
}
.btn.is-busy .btn__spinner { display: inline-block; }
.btn.is-busy .btn__text { opacity: .9; }

@keyframes spin { to { transform: rotate(360deg); } }
@media (prefers-reduced-motion: reduce) {
  .btn__spinner { animation-duration: 1.6s; }
  * { transition-duration: .01ms !important; }
}

/* ---------------------------------------------------------------- 结果面板 */
.result {
  margin-top: 1.2rem;
  padding: 1rem;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
  background: var(--surface-2);
  animation: rise .28s ease-out;
}
@keyframes rise { from { opacity: 0; transform: translateY(6px); } }

.result--ok { border-color: color-mix(in srgb, var(--ok) 45%, var(--border)); background: var(--ok-soft); }
.result--err { border-color: color-mix(in srgb, var(--danger) 45%, var(--border)); background: var(--danger-soft); }
.result--warn { border-color: color-mix(in srgb, var(--warn) 45%, var(--border)); background: var(--warn-soft); }

.result__head { display: flex; align-items: center; gap: .55rem; margin-bottom: .7rem; }
.result__badge {
  width: 26px; height: 26px; flex: none;
  display: grid; place-items: center;
  border-radius: 50%;
  font-size: .85rem;
  font-weight: 700;
  color: #fff;
}
.result--ok .result__badge { background: var(--ok); }
.result--err .result__badge { background: var(--danger); }
.result--warn .result__badge { background: var(--warn); }
.result__title { font-size: .95rem; font-weight: 650; }

.result__order {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: .6rem;
  flex-wrap: wrap;
  padding: .6rem .75rem;
  margin-bottom: .7rem;
  border-radius: var(--radius-sm);
  background: var(--surface);
  border: 1px dashed var(--border-strong);
}
.result__order-label { font-size: .74rem; color: var(--text-3); }
.result__order-value {
  font-family: var(--mono);
  font-size: 1.02rem;
  font-weight: 700;
  letter-spacing: .04em;
  word-break: break-all;
}

.result__rows { display: grid; gap: .3rem; }
.result__row {
  display: grid;
  grid-template-columns: 5.2rem minmax(0, 1fr);
  gap: .5rem;
  font-size: .84rem;
}
.result__row dt { color: var(--text-3); }
.result__row dd { margin: 0; word-break: break-word; }
.result__row dd.mono { font-family: var(--mono); font-size: .78rem; }

.result__note {
  margin-top: .7rem;
  font-size: .78rem;
  color: var(--text-2);
}

/* ---------------------------------------------------------------- 提示条 */
.banner {
  display: flex;
  align-items: flex-start;
  gap: .65rem;
  margin-bottom: 1.1rem;
  padding: .8rem .9rem;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--surface);
  box-shadow: var(--shadow-1);
}
.banner--warn { border-color: color-mix(in srgb, var(--warn) 45%, var(--border)); background: var(--warn-soft); }
.banner__icon {
  flex: none;
  width: 20px; height: 20px;
  display: grid; place-items: center;
  border-radius: 50%;
  background: var(--warn);
  color: #fff;
  font-size: .72rem;
  font-weight: 700;
}
.banner__body { flex: 1; min-width: 0; }
.banner__body strong { display: block; font-size: .87rem; }
.banner__body p { font-size: .8rem; color: var(--text-2); }
.banner__close {
  flex: none;
  border: 0; background: transparent;
  color: var(--text-3);
  font-size: 1.15rem; line-height: 1;
  cursor: pointer; padding: 0 .2rem;
}

/* ---------------------------------------------------------------- 登录闸门 */
.gate {
  display: grid;
  place-items: center;
  padding: 1rem 0 2rem;
  min-height: 60dvh;
}
.gate__card {
  width: min(26rem, 100%);
  padding: 1.6rem;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow-2);
  animation: rise .28s ease-out;
}
.gate__mark {
  display: grid;
  place-items: center;
  width: 46px; height: 46px;
  margin-bottom: .9rem;
  border-radius: 13px;
  color: #fff;
  background: linear-gradient(150deg, var(--brand), #7a5cf0);
  box-shadow: var(--shadow-2);
}
.gate__mark svg { width: 24px; height: 24px; }
.gate__title { font-size: 1.22rem; font-weight: 680; letter-spacing: -.01em; }
.gate__desc {
  margin: .4rem 0 1.3rem;
  font-size: .86rem;
  line-height: 1.6;
  color: var(--text-2);
}

/* 登录页的说明文字（登录态只到关闭浏览器为止） */
.field__hint--login { margin: .1rem 0 .95rem; }

/* ---------------------------------------------------------------- 启动加载态 */
.loading {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: .6rem;
  padding: 3.5rem 1rem;
  color: var(--text-3);
  font-size: .88rem;
}
.loading__spinner {
  width: 1.1rem; height: 1.1rem;
  border: 2px solid var(--border-strong);
  border-top-color: var(--brand);
  border-radius: 50%;
  animation: spin .7s linear infinite;
}

/* ---------------------------------------------------------------- 轻提示 */
.toast {
  position: fixed;
  left: 50%;
  bottom: calc(1.2rem + env(safe-area-inset-bottom));
  transform: translateX(-50%);
  z-index: 60;
  max-width: min(24rem, calc(100vw - 2rem));
  padding: .6rem 1rem;
  border-radius: var(--radius-pill);
  background: #101420;
  color: #f4f6fb;
  font-size: .84rem;
  box-shadow: var(--shadow-3);
  animation: rise .2s ease-out;
}

/* ---------------------------------------------------------------- 页脚 */
.foot {
  display: flex;
  flex-wrap: wrap;
  gap: .4rem 1rem;
  justify-content: space-between;
  align-items: center;
  margin-top: 2rem;
  padding-top: 1.1rem;
  border-top: 1px solid var(--border);
  font-size: .76rem;
  color: var(--text-3);
}
.foot__link { color: var(--text-3); text-decoration: none; border-bottom: 1px dotted var(--border-strong); }
.foot__link:hover { color: var(--brand); border-color: var(--brand); }

/* ---------------------------------------------------------------- 工具类 */
[hidden] { display: none !important; }

.sr-only {
  position: absolute;
  width: 1px; height: 1px;
  padding: 0; margin: -1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
  border: 0;
}