/*
 * 登录 / 注册 / 改密码页面的样式。
 * 颜色、字号全部来自 templates/_design_tokens.html，和全站保持同一套：直角、同样的蓝、同样的面板色。
 */

* {
  box-sizing: border-box;
}

html {
  min-height: 100%;
}

body {
  min-height: 100vh;
  margin: 0;
  padding: 64px 20px 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-primary);
  background: var(--bg-primary);
  font: var(--font-md)/1.5 var(--site-font-family);
}

button,
input,
select {
  font: inherit;
}

a {
  color: inherit;
}

:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

/* ---------- 右上角：主题和语言 ---------- */
.page-actions {
  position: fixed;
  top: 14px;
  right: 16px;
  z-index: 2;
  display: flex;
  align-items: center;
  gap: 8px;
}

.theme-button,
.page-actions .language-select {
  height: var(--control-h);
  color: var(--text-primary);
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  cursor: pointer;
  transition: border-color var(--transition-fast), color var(--transition-fast);
  border-radius: var(--radius-md);
}

.theme-button {
  width: var(--control-h);
  display: grid;
  place-items: center;
  padding: 0;
}

.page-actions .language-select {
  padding: 0 8px;
  font-size: var(--font-sm);
}

.theme-button:hover,
.page-actions .language-select:hover {
  color: var(--accent);
  border-color: var(--accent);
}

.theme-button svg {
  width: 17px;
  height: 17px;
}

.icon-sun {
  display: none;
}

[data-theme='dark'] .icon-sun {
  display: block;
}

[data-theme='dark'] .icon-moon {
  display: none;
}

/* ---------- 外框 ---------- */
.auth-shell {
  width: min(920px, 100%);
  display: grid;
  grid-template-columns: minmax(300px, .9fr) minmax(400px, 1.1fr);
  overflow: hidden;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  box-shadow: var(--shadow-raised);
  border-radius: var(--radius-lg);
}

.auth-shell--single {
  width: min(440px, 100%);
  display: block;
}

.brand-panel {
  position: relative;
  min-height: 600px;
  padding: 44px 40px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  overflow: hidden;
  color: var(--color-white);
  background: linear-gradient(150deg, #16293a 0%, #24506f 58%, #337cac 100%);
}

/* 细网格底纹 */
.brand-panel::before {
  content: "";
  position: absolute;
  inset: 0;
  opacity: .1;
  background-image:
    linear-gradient(rgba(255, 255, 255, .6) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, .6) 1px, transparent 1px);
  background-size: 40px 40px;
  mask-image: linear-gradient(to bottom right, #000, transparent 75%);
}

.brand-panel::after {
  content: "80";
  position: absolute;
  right: -18px;
  bottom: -80px;
  color: rgba(255, 255, 255, .06);
  font-size: 250px;
  font-weight: 800;
  line-height: 1;
  letter-spacing: -22px;
}

.brand-top,
.brand-copy {
  position: relative;
  z-index: 1;
}

.brand-top {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: Georgia, "Times New Roman", serif;
  font-size: 18px;
  font-weight: 700;
}

.brand-mark {
  width: 38px;
  height: 38px;
  display: block;
  object-fit: contain;
}

.brand-copy {
  position: absolute;
  top: 50%;
  right: 40px;
  left: 40px;
  transform: translateY(-50%);
}

.brand-copy h1 {
  margin: 0;
  line-height: 1.35;
}

.brand-title-en {
  display: block;
  font-size: 22px;
  font-weight: 400;
  letter-spacing: .04em;
  white-space: nowrap;
}

.brand-title-cn {
  display: block;
  margin-top: 4px;
  font-size: 34px;
  letter-spacing: 2px;
  white-space: nowrap;
}

.form-panel {
  min-width: 0;
  padding: 36px 40px 28px;
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.form-heading {
  margin-bottom: 18px;
}

.form-heading h2 {
  margin: 0 0 4px;
  font-size: var(--font-xl);
  line-height: 1.3;
}

.form-heading p {
  margin: 0;
  color: var(--text-muted);
  font-size: var(--font-sm);
}

/* ---------- 登录 / 注册切换 ---------- */
.tabs {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3px;
  margin-bottom: 18px;
  padding: 3px;
  background: var(--surface-soft);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
}

.tab {
  padding: 8px;
  color: var(--text-muted);
  font-size: var(--font-sm);
  font-weight: 700;
  text-align: center;
  text-decoration: none;
  transition: color var(--transition-fast), background-color var(--transition-fast);
  border-radius: var(--radius-sm);
}

.tab:hover {
  color: var(--text-primary);
}

.tab.active {
  color: var(--accent-contrast);
  background: var(--accent);
}

.tab-content {
  display: none;
}

.tab-content.active {
  display: block;
}

/* ---------- 提示条 ---------- */
.alert {
  margin-bottom: 14px;
  padding: 9px 11px;
  border: 1px solid;
  font-size: var(--font-sm);
  border-radius: var(--radius-md);
}

.alert-success {
  color: var(--alert-success-color);
  background: var(--alert-success-bg);
  border-color: var(--alert-success-border);
}

.alert-error {
  color: var(--alert-error-color);
  background: var(--alert-error-bg);
  border-color: var(--alert-error-border);
}

.alert-info {
  color: var(--alert-info-color);
  background: var(--alert-info-bg);
  border-color: var(--alert-info-border);
}

.application-notice,
.auth-note {
  margin: 0 0 14px;
  padding: 9px 11px;
  color: var(--text-secondary);
  background: var(--accent-soft);
  border: 1px solid var(--border-color);
  font-size: var(--font-sm);
  line-height: 1.6;
  border-radius: var(--radius-md);
}

/* ---------- 表单 ---------- */
.form-group {
  margin-bottom: 13px;
}

.form-group[hidden] {
  display: none;
}

.form-label {
  display: block;
  margin-bottom: 5px;
  color: var(--text-secondary);
  font-size: var(--font-sm);
  font-weight: 700;
}

.required {
  color: var(--color-red);
}

.text-input,
.file-input {
  width: 100%;
  height: 38px;
  padding: 0 11px;
  color: var(--text-primary);
  background: var(--bg-input);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.text-input::placeholder {
  color: var(--text-muted);
  opacity: .85;
}

.text-input:hover,
.file-input:hover {
  border-color: var(--border-strong);
}

.text-input:focus,
.file-input:focus {
  border-color: var(--accent);
  outline: none;
  box-shadow: 0 0 0 2px var(--accent-soft);
}

.text-input[readonly] {
  color: var(--text-secondary);
  background: var(--surface-soft);
}

.file-input {
  height: auto;
  padding: 6px 8px;
  font-size: var(--font-sm);
}

.file-input::file-selector-button {
  margin-right: 10px;
  padding: 5px 10px;
  color: var(--text-primary);
  background: var(--surface-soft);
  border: 1px solid var(--border-color);
  cursor: pointer;
  border-radius: var(--radius-sm);
}

.field-note,
.email-status {
  display: block;
  margin-top: 5px;
  color: var(--text-muted);
  font-size: var(--font-xs);
}

.email-status {
  min-height: 17px;
}

.email-status.success {
  color: var(--color-green);
}

.email-status.error {
  color: var(--color-red);
}

.field-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}

.email-action-row {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 112px;
  gap: 8px;
  margin-bottom: 8px;
}

/* 次要按钮：发送验证码、刷新验证码、显示密码 */
.email-action-button,
.captcha-refresh {
  height: 38px;
  padding: 0 10px;
  color: var(--text-primary);
  background: var(--surface-soft);
  border: 1px solid var(--border-color);
  cursor: pointer;
  transition: border-color var(--transition-fast), background-color var(--transition-fast);
  border-radius: var(--radius-md);
}

.email-action-button {
  font-size: var(--font-sm);
}

.email-action-button:hover,
.captcha-refresh:hover {
  background: var(--bg-hover);
  border-color: var(--border-strong);
}

.email-action-button:disabled {
  opacity: .55;
  cursor: not-allowed;
}

.password-wrap {
  position: relative;
}

.password-wrap .text-input {
  padding-right: 40px;
}

/* Edge 自带的“看密码”小眼睛：只在刚打字时出现、点别处又消失（时隐时现），
   换成我们自己一直显示的眼睛按钮，自带的藏掉 */
.password-wrap .text-input::-ms-reveal,
.password-wrap .text-input::-ms-clear {
  display: none;
}

/* 密码框右边的眼睛按钮：睁眼 = 点一下显示密码；划掉的眼 = 点一下藏起来 */
.password-toggle {
  position: absolute;
  top: 1px;
  right: 1px;
  display: grid;
  place-items: center;
  width: 36px;
  height: 36px;
  padding: 0;
  color: var(--text-muted);
  background: transparent;
  border: 0;
  border-radius: var(--radius-md);
  cursor: pointer;
}

.pw-icon {
  width: 18px;
  height: 18px;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.8;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.pw-icon-hide,
.password-toggle.is-shown .pw-icon-show { display: none; }
.password-toggle.is-shown .pw-icon-hide { display: block; }

.password-toggle:hover {
  color: var(--accent);
}

.school-status-options {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 8px;
}

.school-status-option {
  position: relative;
  cursor: pointer;
}

.school-status-option input {
  position: absolute;
  opacity: 0;
  pointer-events: none;
}

.school-status-option span {
  display: grid;
  gap: 3px;
  min-height: 56px;
  padding: 10px 12px;
  background: var(--surface-soft);
  border: 1px solid var(--border-color);
  transition: border-color var(--transition-fast), background-color var(--transition-fast);
  border-radius: var(--radius-md);
}

.school-status-option:hover span {
  border-color: var(--border-strong);
}

.school-status-option small {
  color: var(--text-muted);
  font-size: var(--font-xs);
}

.school-status-option input:checked + span {
  background: var(--accent-soft);
  border-color: var(--accent);
  box-shadow: inset 3px 0 0 var(--accent);
}

.school-status-option input:focus-visible + span {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

.form-trap {
  position: absolute !important;
  left: -10000px !important;
  width: 1px !important;
  height: 1px !important;
  overflow: hidden !important;
}

/* ---------- 验证码 ---------- */
.captcha-block {
  margin-bottom: 13px;
}

.captcha-row {
  display: grid;
  grid-template-columns: 150px minmax(0, 1fr) 38px;
  gap: 8px;
}

.captcha-image {
  width: 150px;
  height: 38px;
  display: block;
  object-fit: cover;
  background: var(--bg-input);
  border: 1px solid var(--border-color);
  user-select: none;
  border-radius: var(--radius-md);
}

.captcha-refresh {
  width: 38px;
  padding: 0;
  color: var(--accent);
  font-size: 18px;
  line-height: 1;
}

.form-meta {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  margin: -2px 0 14px;
  color: var(--text-muted);
  font-size: var(--font-sm);
}

.form-link {
  color: var(--text-link);
  text-decoration: none;
}

.form-link:hover {
  color: var(--text-link-hover);
}

/* ---------- 主要按钮 ---------- */
.primary-button {
  width: 100%;
  height: 40px;
  color: var(--accent-contrast);
  background: var(--accent);
  border: 1px solid var(--accent);
  font-weight: 700;
  cursor: pointer;
  transition: background-color var(--transition-fast), border-color var(--transition-fast);
  border-radius: var(--radius-md);
}

.primary-button:hover {
  background: var(--accent-hover);
  border-color: var(--accent-hover);
}

.primary-button:active {
  transform: translateY(1px);
}

.primary-button:disabled {
  opacity: .6;
  cursor: not-allowed;
}

.steam-verify-btn {
  min-height: 40px;
  padding: 0 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 9px;
  color: #fff;
  background: #1b2838;
  border: 1px solid #2a475e;
  font-weight: 700;
  text-decoration: none;
  transition: background-color var(--transition-fast);
  border-radius: var(--radius-md);
}

.steam-verify-btn:hover {
  background: #2a475e;
}

.steam-icon {
  width: 20px;
  height: 20px;
}

.verified-steam {
  padding: 9px 11px;
  color: var(--alert-success-color);
  background: var(--alert-success-bg);
  border: 1px solid var(--alert-success-border);
  font-size: var(--font-sm);
  word-break: break-all;
}

.back-link {
  align-self: center;
  display: block;
  margin-top: 18px;
  color: var(--text-muted);
  font-size: var(--font-sm);
  text-align: center;
  text-decoration: none;
}

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

/* ---------- 改密码页（单栏） ---------- */
.auth-single-head {
  padding: 20px 24px 16px;
  border-bottom: 1px solid var(--border-color);
  background: var(--surface-soft);
}

.auth-single-head .brand-top {
  color: var(--text-primary);
}

.auth-single-head p {
  margin: 8px 0 0;
  color: var(--text-muted);
  font-size: var(--font-sm);
}

.auth-single-body {
  padding: 20px 24px 22px;
}

/* ---------- 小屏 ---------- */
@media (max-width: 760px) {
  body {
    align-items: flex-start;
    padding: 60px 12px 24px;
  }

  .auth-shell {
    display: block;
    max-width: 500px;
  }

  .brand-panel {
    min-height: 0;
    padding: 18px 22px;
  }

  .brand-copy {
    display: none;
  }

  .form-panel {
    padding: 24px 22px 22px;
  }
}

@media (max-width: 460px) {
  .form-panel,
  .auth-single-body {
    padding-right: 16px;
    padding-left: 16px;
  }

  .field-row {
    grid-template-columns: 1fr;
    gap: 0;
  }

  .captcha-row {
    grid-template-columns: 118px minmax(0, 1fr) 38px;
  }

  .captcha-image {
    width: 118px;
  }
}

@media (prefers-reduced-motion: reduce) {
  * {
    transition-duration: .01ms !important;
  }
}