/* ========================================
   一元机场 — 全局样式（水墨画风）
   ======================================== */

@import url('https://fonts.googleapis.com/css2?family=Noto+Serif+SC:wght@400;600;700;900&family=ZCOOL+XiaoWei&display=swap');

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

:root {
  --ink-dark:   #1a1a1a;
  --ink-mid:    #4a4a4a;
  --ink-light:  #8c8c8c;
  --paper:      #f5f0e8;
  --paper-dark: #e8e0d0;
  --accent:     #c9a96e;
  --accent-glow:#d4b97a;
  --red:        #b5403f;
  --red-light:  #d4605f;
  --green:      #5a8a5e;
  --glass:      rgba(245, 240, 232, 0.82);
  --glass-dark: rgba(26, 26, 26, 0.75);
  --shadow:     0 8px 32px rgba(0,0,0,0.18);
  --radius:     16px;
  --font-serif: 'Noto Serif SC', 'ZCOOL XiaoWei', serif;
}

html { scroll-behavior: smooth; }

body {
  font-family: var(--font-serif);
  color: var(--ink-dark);
  min-height: 100vh;
  background: var(--paper);
  background-image: url('assets/ink-bg.png');
  background-size: cover;
  background-position: center;
  background-attachment: fixed;
  background-repeat: no-repeat;
  position: relative;
}

body::before {
  content: '';
  position: fixed;
  inset: 0;
  background: linear-gradient(135deg, rgba(245,240,232,0.55) 0%, rgba(245,240,232,0.35) 50%, rgba(245,240,232,0.55) 100%);
  z-index: 0;
  pointer-events: none;
}

/* ---------- Layout ---------- */
.page-wrapper {
  position: relative;
  z-index: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  min-height: 100vh;
  padding: 40px 20px;
}

/* ---------- Glass Card ---------- */
.glass-card {
  background: var(--glass);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  border: 1px solid rgba(201,169,110,0.25);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 40px;
  width: 100%;
  max-width: 460px;
  animation: fadeSlideUp 0.6s ease-out;
}

.glass-card.wide {
  max-width: 900px;
}

.glass-card.admin-wide {
  max-width: 1100px;
}

@keyframes fadeSlideUp {
  from { opacity: 0; transform: translateY(30px); }
  to   { opacity: 1; transform: translateY(0); }
}

/* ---------- Typography ---------- */
h1.brand {
  font-size: 2.6rem;
  font-weight: 900;
  color: var(--ink-dark);
  text-align: center;
  margin-bottom: 8px;
  letter-spacing: 6px;
  text-shadow: 2px 2px 8px rgba(0,0,0,0.08);
}

h1.brand span.accent {
  color: var(--accent);
}

.subtitle {
  text-align: center;
  color: var(--ink-light);
  font-size: 0.95rem;
  margin-bottom: 28px;
  letter-spacing: 2px;
}

h2.section-title {
  font-size: 1.35rem;
  font-weight: 700;
  color: var(--ink-dark);
  margin-bottom: 20px;
  padding-bottom: 10px;
  border-bottom: 2px solid var(--accent);
  letter-spacing: 2px;
}

/* ---------- Tabs ---------- */
.tab-bar {
  display: flex;
  border-bottom: 2px solid rgba(201,169,110,0.3);
  margin-bottom: 28px;
}

.tab-btn {
  flex: 1;
  padding: 12px 0;
  border: none;
  background: none;
  font-family: var(--font-serif);
  font-size: 1.05rem;
  color: var(--ink-light);
  cursor: pointer;
  transition: all 0.3s;
  position: relative;
  letter-spacing: 2px;
}

.tab-btn::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 20%;
  width: 60%;
  height: 3px;
  background: var(--accent);
  border-radius: 2px;
  transform: scaleX(0);
  transition: transform 0.3s;
}

.tab-btn.active {
  color: var(--ink-dark);
  font-weight: 700;
}

.tab-btn.active::after {
  transform: scaleX(1);
}

.tab-btn:hover { color: var(--ink-dark); }

.tab-panel { display: none; }
.tab-panel.active { display: block; animation: fadeSlideUp 0.4s ease-out; }

/* ---------- Forms ---------- */
.form-group {
  margin-bottom: 20px;
}

.form-group label {
  display: block;
  font-size: 0.9rem;
  color: var(--ink-mid);
  margin-bottom: 6px;
  letter-spacing: 1px;
}

.form-group input,
.form-group select {
  width: 100%;
  padding: 12px 16px;
  border: 1px solid rgba(201,169,110,0.35);
  border-radius: 10px;
  background: rgba(255,255,255,0.6);
  font-family: var(--font-serif);
  font-size: 1rem;
  color: var(--ink-dark);
  transition: border-color 0.3s, box-shadow 0.3s;
  outline: none;
}

.form-group input:focus,
.form-group select:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(201,169,110,0.15);
}

.form-group input::placeholder {
  color: var(--ink-light);
  opacity: 0.6;
}

.form-group .error-text {
  color: var(--red);
  font-size: 0.82rem;
  margin-top: 4px;
  display: none;
}

.form-group .error-text.show {
  display: block;
  animation: fadeSlideUp 0.3s ease-out;
}

.verify-code-group {
  display: flex;
  gap: 10px;
}

.verify-code-group input {
  flex: 1;
}

.btn-send-code {
  white-space: nowrap;
  padding: 0 20px;
}

.btn-send-code:disabled {
  opacity: 0.6;
  cursor: not-allowed;
}

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 13px 28px;
  border: none;
  border-radius: 10px;
  font-family: var(--font-serif);
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.3s;
  letter-spacing: 1px;
  width: 100%;
}

.btn-primary {
  background: linear-gradient(135deg, var(--accent) 0%, var(--accent-glow) 100%);
  color: #fff;
  box-shadow: 0 4px 14px rgba(201,169,110,0.35);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(201,169,110,0.45);
}

.btn-primary:active {
  transform: translateY(0);
}

.btn-danger {
  background: linear-gradient(135deg, var(--red) 0%, var(--red-light) 100%);
  color: #fff;
  box-shadow: 0 4px 14px rgba(181,64,63,0.25);
}

.btn-danger:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(181,64,63,0.35);
}

.btn-outline {
  background: transparent;
  border: 2px solid var(--accent);
  color: var(--accent);
}

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

.btn-small {
  padding: 8px 18px;
  font-size: 0.88rem;
  width: auto;
}

.btn-green {
  background: linear-gradient(135deg, var(--green) 0%, #6fa873 100%);
  color: #fff;
}

.btn-green:hover {
  transform: translateY(-2px);
}

/* ---------- Plans / Cards ---------- */
.plans-container {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
  margin-top: 20px;
}

.plan-card {
  background: var(--glass);
  backdrop-filter: blur(12px);
  border: 1px solid rgba(201,169,110,0.2);
  border-radius: var(--radius);
  padding: 30px 24px;
  text-align: center;
  transition: all 0.35s;
  position: relative;
  overflow: hidden;
}

.plan-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--accent), var(--accent-glow));
}

.plan-card.premium::before {
  background: linear-gradient(90deg, var(--red), var(--red-light));
}

.plan-card:hover {
  transform: translateY(-6px);
  box-shadow: 0 12px 36px rgba(0,0,0,0.15);
  border-color: var(--accent);
}

.plan-card .plan-icon {
  font-size: 2.8rem;
  margin-bottom: 12px;
}

.plan-card .plan-name {
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--ink-dark);
  margin-bottom: 8px;
  letter-spacing: 2px;
}

.plan-card .plan-desc {
  font-size: 0.9rem;
  color: var(--ink-light);
  margin-bottom: 16px;
  line-height: 1.6;
}

.plan-card .plan-price {
  font-size: 2.2rem;
  font-weight: 900;
  color: var(--accent);
  margin-bottom: 4px;
}

.plan-card.premium .plan-price {
  color: var(--red);
}

.plan-card .plan-period {
  font-size: 0.85rem;
  color: var(--ink-light);
  margin-bottom: 20px;
}

/* ---------- Modal ---------- */
.modal-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.55);
  z-index: 1000;
  align-items: center;
  justify-content: center;
  animation: fadeIn 0.3s;
}

.modal-overlay.active {
  display: flex;
}

@keyframes fadeIn {
  from { opacity: 0; }
  to   { opacity: 1; }
}

.modal-content {
  background: var(--paper);
  border-radius: var(--radius);
  padding: 36px;
  max-width: 420px;
  width: 90%;
  text-align: center;
  box-shadow: 0 16px 48px rgba(0,0,0,0.25);
  animation: fadeSlideUp 0.4s ease-out;
}

.modal-content h3 {
  font-size: 1.3rem;
  margin-bottom: 8px;
  color: var(--ink-dark);
  letter-spacing: 2px;
}

.modal-content .modal-amount {
  font-size: 2rem;
  font-weight: 900;
  color: var(--red);
  margin: 10px 0;
}

.modal-content .qr-placeholder {
  width: 220px;
  height: 220px;
  margin: 20px auto;
  border: 2px dashed var(--accent);
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--ink-light);
  font-size: 0.9rem;
  background: rgba(255,255,255,0.5);
  overflow: hidden;
}

.modal-content .qr-placeholder img {
  width: 100%;
  height: 100%;
  object-fit: contain;
}

.modal-actions {
  display: flex;
  gap: 12px;
  margin-top: 20px;
}

.modal-actions .btn {
  flex: 1;
}

/* ---------- Status Message ---------- */
.status-banner {
  display: none;
  padding: 16px 24px;
  border-radius: 12px;
  text-align: center;
  font-size: 1rem;
  margin-top: 20px;
  animation: fadeSlideUp 0.4s ease-out;
}

.status-banner.pending {
  display: block;
  background: linear-gradient(135deg, rgba(201,169,110,0.15), rgba(201,169,110,0.05));
  border: 1px solid var(--accent);
  color: var(--ink-dark);
}

.status-banner.success {
  display: block;
  background: linear-gradient(135deg, rgba(90,138,94,0.15), rgba(90,138,94,0.05));
  border: 1px solid var(--green);
  color: var(--green);
}

.status-banner .spinner {
  display: inline-block;
  width: 18px;
  height: 18px;
  border: 2px solid var(--accent);
  border-top-color: transparent;
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
  vertical-align: middle;
  margin-right: 8px;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

/* ---------- Admin Table ---------- */
.admin-table {
  width: 100%;
  border-collapse: separate;
  border-spacing: 0;
  margin-top: 16px;
}

.admin-table thead th {
  background: rgba(201,169,110,0.12);
  padding: 12px 16px;
  text-align: left;
  font-size: 0.9rem;
  color: var(--ink-mid);
  letter-spacing: 1px;
  border-bottom: 2px solid var(--accent);
}

.admin-table tbody td {
  padding: 12px 16px;
  border-bottom: 1px solid rgba(201,169,110,0.15);
  font-size: 0.92rem;
  color: var(--ink-dark);
}

.admin-table tbody tr:hover {
  background: rgba(201,169,110,0.06);
}

.badge {
  display: inline-block;
  padding: 3px 10px;
  border-radius: 20px;
  font-size: 0.78rem;
  font-weight: 600;
}

.badge.pending {
  background: rgba(201,169,110,0.18);
  color: var(--accent);
}

.badge.done {
  background: rgba(90,138,94,0.18);
  color: var(--green);
}

/* ---------- Top Bar ---------- */
.top-bar {
  width: 100%;
  max-width: 900px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 24px;
}

.top-bar.admin-wide {
  max-width: 1100px;
}

.top-bar .user-info {
  font-size: 0.9rem;
  color: var(--ink-mid);
}

/* ---------- Toast ---------- */
.toast {
  position: fixed;
  top: 30px;
  right: 30px;
  z-index: 2000;
  padding: 14px 24px;
  border-radius: 10px;
  font-family: var(--font-serif);
  font-size: 0.95rem;
  color: #fff;
  box-shadow: 0 6px 24px rgba(0,0,0,0.2);
  transform: translateX(120%);
  transition: transform 0.4s cubic-bezier(0.22,1,0.36,1);
}

.toast.show {
  transform: translateX(0);
}

.toast.success { background: var(--green); }
.toast.error   { background: var(--red); }
.toast.info    { background: var(--ink-mid); }

/* ---------- Admin Tabs ---------- */
.admin-tabs {
  display: flex;
  gap: 0;
  margin-bottom: 24px;
  border-bottom: 2px solid rgba(201,169,110,0.3);
}

.admin-tab-btn {
  padding: 10px 24px;
  border: none;
  background: none;
  font-family: var(--font-serif);
  font-size: 0.95rem;
  color: var(--ink-light);
  cursor: pointer;
  transition: all 0.3s;
  border-bottom: 3px solid transparent;
  margin-bottom: -2px;
  letter-spacing: 1px;
}

.admin-tab-btn.active {
  color: var(--ink-dark);
  font-weight: 700;
  border-bottom-color: var(--accent);
}

.admin-panel { display: none; }
.admin-panel.active { display: block; animation: fadeSlideUp 0.3s ease-out; }

/* ---------- Node Input ---------- */
.node-input-group {
  display: flex;
  gap: 10px;
  margin-top: 10px;
}

.node-input-group input {
  flex: 1;
  padding: 10px 14px;
  border: 1px solid rgba(201,169,110,0.35);
  border-radius: 8px;
  font-family: var(--font-serif);
  font-size: 0.9rem;
  background: rgba(255,255,255,0.6);
  outline: none;
}

.node-input-group input:focus {
  border-color: var(--accent);
}

/* ---------- Decorative Seal ---------- */
.ink-seal {
  width: 60px;
  height: 60px;
  margin: 0 auto 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 3px solid var(--red);
  border-radius: 8px;
  color: var(--red);
  font-size: 1.5rem;
  font-weight: 900;
  transform: rotate(-8deg);
  opacity: 0.7;
  letter-spacing: 2px;
}

/* ---------- Responsive ---------- */
@media (max-width: 700px) {
  .plans-container {
    grid-template-columns: 1fr;
  }
  .glass-card {
    padding: 24px 18px;
  }
  h1.brand {
    font-size: 2rem;
  }
  .top-bar {
    flex-direction: column;
    gap: 10px;
    text-align: center;
  }
}