/* ===== Reset & tokens ===== */
*,
*::before,
*::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

:root {
  /* 莫兰迪色系 */
  --font-sans: system-ui, -apple-system, "PingFang SC", "Helvetica Neue", Helvetica, Arial, sans-serif;
  --font-mono: ui-monospace, Menlo, Monaco, "Courier New", monospace;

  --color-text: #5c5854;
  --color-text-muted: #8a847c;
  --color-heading: #4a4642;
  --color-link: #7a8f9a;
  --color-link-hover: #657985;

  --color-border: #d5cfc7;
  --color-border-light: #e8e3dc;
  --color-bg: #f7f4f0;
  --color-bg-surface: #fdfbf8;
  --color-bg-muted: #ebe6df;

  --color-primary: #8da0ae;
  --color-primary-hover: #7a8f9e;
  --color-success: #93a892;
  --color-success-hover: #7f947f;
  --color-danger: #c49a96;
  --color-danger-hover: #b08884;
  --color-warning: #c4b08a;
  --color-warning-hover: #b09e78;
  --color-info: #89a3a0;
  --color-info-hover: #75908d;
  --color-secondary: #a39e96;
  --color-secondary-hover: #918c84;

  --color-flash-success-bg: #e5ebe3;
  --color-flash-success-text: #4a5c48;
  --color-flash-success-border: #cdd8cb;
  --color-flash-warning-bg: #ebe4d6;
  --color-flash-warning-text: #6b5e42;
  --color-flash-warning-border: #ddd3c0;
  --color-flash-error-bg: #ebe2df;
  --color-flash-error-text: #7a4f4f;
  --color-flash-error-border: #dccfcc;

  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 14px;
  --shadow-card: 0 4px 14px rgba(74, 70, 66, 0.06);
  --page-max-width: 900px;
  --page-max-width-narrow: 800px;
}

/* ===== Base typography ===== */
body {
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.6;
  color: var(--color-text);
  background-color: var(--color-bg);
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

h1, h2, h3, h4, h5, h6 {
  font-weight: 600;
  margin-bottom: 0.5em;
  color: var(--color-heading);
}

h1 {
  border-bottom: 2px solid var(--color-border);
  padding-bottom: 10px;
}

p {
  margin-bottom: 1em;
}

a {
  color: var(--color-link);
  text-decoration: none;
  cursor: pointer;
  transition: color 0.2s ease;
}

a:hover,
a:focus {
  color: var(--color-link-hover);
  text-decoration: underline;
}

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

ul, ol {
  margin-left: 1.5em;
  margin-bottom: 1em;
}

li {
  margin-bottom: 0.5em;
}

/* ===== Page shells ===== */
.page-shell {
  max-width: var(--page-max-width);
  margin: 0 auto;
  padding: 10px 16px 24px;
}

.page-shell--narrow {
  max-width: var(--page-max-width-narrow);
}

.page-centered {
  margin: 40px auto;
  padding: 0 16px;
}

.container {
  width: 90%;
  max-width: 1200px;
  margin-left: auto;
  margin-right: auto;
  padding: 1em 0;
}

.center {
  text-align: center;
}

/* ===== Cards & panels ===== */
.card {
  max-width: 420px;
  margin: 0 auto;
  padding: 20px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  background: var(--color-bg-surface);
  box-shadow: var(--shadow-card);
}

.card--wide {
  max-width: 520px;
}

.panel {
  display: none;
}

.panel.active {
  display: block;
}

details {
  margin-top: 12px;
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-md);
  padding: 8px 10px;
}

summary {
  cursor: pointer;
  font-weight: 600;
}

.hint,
.muted {
  font-size: 0.85rem;
  color: var(--color-text-muted);
}

.spacer {
  height: 10px;
}

/* ===== Header bar (subsystem pages) ===== */
.header-status {
  text-align: right;
  margin-bottom: 10px;
  font-size: 0.9em;
}

.welcome-msg {
  margin-right: 10px;
  font-weight: bold;
  color: var(--color-link);
}

.user-center-link {
  margin-right: 10px;
  color: var(--color-link);
  text-decoration: none;
}

.logout-btn {
  color: var(--color-danger);
  text-decoration: none;
}

/* ===== Flash messages ===== */
.flashes {
  list-style: none;
  padding: 10px;
  margin: 10px 0;
  border-radius: var(--radius-sm);
}

.flashes li {
  margin-bottom: 0;
  padding: 8px 10px;
  border-radius: var(--radius-sm);
}

.flashes li.success,
.flash-success {
  background: var(--color-flash-success-bg);
  color: var(--color-flash-success-text);
  border: 1px solid var(--color-flash-success-border);
}

.flashes li.warning,
.flash-warning {
  background: var(--color-flash-warning-bg);
  color: var(--color-flash-warning-text);
  border: 1px solid var(--color-flash-warning-border);
}

.flashes li.error,
.flash-error {
  background: var(--color-flash-error-bg);
  color: var(--color-flash-error-text);
  border: 1px solid var(--color-flash-error-border);
}

/* ===== Forms ===== */
label {
  display: block;
  font-weight: 500;
}

input:not([type]),
input[type="text"],
input[type="password"],
input[type="email"],
input[type="number"],
input[type="search"],
input[type="datetime-local"],
input[type="file"],
select,
textarea {
  font-family: inherit;
  font-size: 1rem;
  padding: 0.5em 0.65em;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  outline-offset: 2px;
  outline-color: transparent;
  transition: outline-color 0.2s, border-color 0.2s;
  width: 100%;
  box-sizing: border-box;
}

input:focus,
select:focus,
textarea:focus {
  border-color: var(--color-primary);
  outline-color: var(--color-primary);
}

textarea {
  resize: vertical;
  min-height: 4em;
}

.form-row,
.row {
  display: flex;
  gap: 8px;
  align-items: center;
}

.form-row input,
.row input {
  flex: 1;
}

.form-stack input,
.form-stack select,
.form-stack textarea,
.form-stack button {
  width: 100%;
  margin: 6px 0;
}

.event-form,
.game-form,
.form-panel {
  margin-bottom: 30px;
  padding: 10px;
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-md);
  background: var(--color-bg-surface);
}

.event-form input,
.event-form textarea,
.event-form select,
.game-form input,
.game-form textarea,
.game-form select {
  margin-top: 5px;
  margin-bottom: 15px;
}

.req {
  color: var(--color-danger);
}

/* ===== Buttons ===== */
button,
input[type="submit"],
input[type="button"],
.btn {
  font-family: inherit;
  font-size: 1rem;
  border: none;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: background-color 0.2s ease;
  text-decoration: none;
  display: inline-block;
  text-align: center;
}

button,
input[type="submit"],
input[type="button"] {
  background-color: var(--color-primary);
  color: #fff;
  padding: 0.5em 1em;
}

button:hover,
input[type="submit"]:hover,
input[type="button"]:hover {
  background-color: var(--color-primary-hover);
}

button:disabled,
.btn:disabled {
  opacity: 0.65;
  cursor: not-allowed;
}

.btn {
  padding: 8px 14px;
}

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

.btn-primary:hover {
  background: var(--color-primary-hover);
}

.base-btn.join-btn,
.btn-success {
  background: var(--color-success);
  color: #fff;
}

.base-btn.join-btn:hover,
.btn-success:hover {
  background: var(--color-success-hover);
}

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

.btn-secondary:hover {
  background: var(--color-secondary-hover);
}

.btn-info,
.base-btn.leave-btn {
  background: var(--color-info);
  color: #fff;
}

.btn-info:hover,
.base-btn.leave-btn:hover {
  background: var(--color-info-hover);
}

.btn-warning,
.base-btn.edit-btn {
  background: var(--color-warning);
  color: #4a4642;
}

.btn-warning:hover,
.base-btn.edit-btn:hover {
  background: var(--color-warning-hover);
}

.btn-danger,
.delete-btn,
.event-form .delete-btn,
.delete-form .delete-btn {
  background: var(--color-danger);
  color: #fff;
}

.btn-danger:hover,
.delete-btn:hover {
  background: var(--color-danger-hover);
}

.base-btn {
  padding: 8px 12px;
  font-weight: bold;
  border-radius: 3px;
}

.linkish {
  background: none;
  border: none;
  color: var(--color-link);
  cursor: pointer;
  padding: 0;
  width: auto;
  text-decoration: underline;
}

.linkish:hover {
  background: none;
  color: var(--color-link-hover);
}

.corner-button {
  position: absolute;
  top: 15px;
  right: 15px;
  padding: 10px 15px;
  background-color: var(--color-primary);
  color: #fff;
}

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

.toolbar {
  margin-bottom: 1rem;
}

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

/* ===== Tables ===== */
table {
  border-collapse: collapse;
  width: 100%;
  margin-bottom: 1em;
}

th,
td {
  border: 1px solid var(--color-border);
  padding: 0.5em 1em;
  text-align: left;
}

th {
  background-color: var(--color-bg-muted);
  font-weight: 600;
}

.permissions-table {
  width: 100%;
  border-collapse: collapse;
  margin-top: 15px;
}

.permissions-table td {
  padding: 6px 8px;
  border-bottom: 1px solid var(--color-border-light);
  border-left: none;
  border-right: none;
  border-top: none;
}

.permissions-table tr:last-child td {
  border-bottom: none;
}

/* ===== Status text ===== */
.status {
  margin-top: 10px;
  min-height: 20px;
}

.status.success,
.success {
  color: var(--color-success-hover);
}

.status.error,
.error {
  color: var(--color-danger-hover);
}

/* ===== Modal ===== */
.modal-backdrop {
  position: fixed;
  z-index: 1000;
  left: 0;
  top: 0;
  width: 100%;
  height: 100%;
  background-color: rgba(74, 70, 66, 0.35);
  display: flex;
  justify-content: center;
  align-items: center;
}

.modal-content {
  background-color: var(--color-bg-surface);
  padding: 20px;
  border: 1px solid var(--color-border);
  width: 90%;
  max-width: 400px;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-card);
}

/* ===== Utilities ===== */
.flex { display: flex; }
.flex-center { display: flex; justify-content: center; align-items: center; }
.flex-column { display: flex; flex-direction: column; }
.flex-wrap { flex-wrap: wrap; }

.mt-1 { margin-top: 0.25rem; }
.mt-2 { margin-top: 0.5rem; }
.mt-3 { margin-top: 1rem; }
.mb-1 { margin-bottom: 0.25rem; }
.mb-2 { margin-bottom: 0.5rem; }
.mb-3 { margin-bottom: 1rem; }

@media (max-width: 600px) {
  body {
    font-size: 14px;
  }

  .container {
    width: 95%;
  }

  .page-centered {
    margin: 24px auto;
  }
}

/* ===== Email bind prompt ===== */
.email-bind-prompt-backdrop {
  position: fixed;
  inset: 0;
  z-index: 2000;
  background: rgba(74, 70, 66, 0.35);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 16px;
  box-sizing: border-box;
}

.email-bind-prompt-card {
  width: 100%;
  max-width: 360px;
  background: var(--color-bg-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 20px;
  box-shadow: var(--shadow-card);
}

.email-bind-prompt-card h3 {
  margin: 0 0 10px;
  font-size: 1.15rem;
  color: var(--color-heading);
}

.email-bind-prompt-card p {
  margin: 0 0 16px;
  color: var(--color-text-muted);
  line-height: 1.5;
  font-size: 0.95rem;
}

.email-bind-prompt-actions {
  display: flex;
  gap: 10px;
  justify-content: flex-end;
}

.email-bind-prompt-actions button {
  border: none;
  border-radius: var(--radius-md);
  padding: 10px 14px;
  font-size: 0.95rem;
  cursor: pointer;
}

.email-bind-prompt-primary {
  background: var(--color-primary);
  color: #fff;
}

.email-bind-prompt-primary:hover {
  background: var(--color-primary-hover);
}

.email-bind-prompt-secondary {
  background: var(--color-bg-muted);
  color: var(--color-text);
}

.email-bind-prompt-secondary:hover {
  background: var(--color-border-light);
}