/* ================================================
   index.css — 鲸尾出海AI首页样式
   ================================================ */

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

:root {
  --bg: #0d0e1a;
  --nav-bg: rgba(13, 14, 26, 0.88);
  --nav-border: rgba(255,255,255,0.08);
  --text: #e8eaf0;
  --text-sub: #9ba3b8;
  --accent: #3b6eff;
  --accent-hover: #5580ff;
  --tag-bg: rgba(59,110,255,0.15);
  --tag-border: rgba(59,110,255,0.4);
  --btn-outline: rgba(255,255,255,0.12);
  --btn-outline-hover: rgba(255,255,255,0.22);
  --gold: #f5a623;
  --gold-bg: rgba(245,166,35,0.15);
  --gold-border: rgba(245,166,35,0.4);
  --dropdown-bg: #ffffff;
  --dropdown-text: #1a1a2e;
  --dropdown-hover: #f0f2f8;
  --dropdown-danger: #e53935;
  --radius: 8px;
}

[data-theme="light"] {
  --bg: #f4f6fb;
  --nav-bg: rgba(255,255,255,0.94);
  --nav-border: rgba(0,0,0,0.08);
  --text: #1a1a2e;
  --text-sub: #5a6080;
  --btn-outline: rgba(0,0,0,0.08);
  --btn-outline-hover: rgba(0,0,0,0.14);
}

html, body {
  height: 100%;
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC',
               'Hiragino Sans GB', 'Microsoft YaHei', sans-serif;
  background: var(--bg);
  color: var(--text);
  overflow-x: hidden;
}

/* ---------- Navbar ---------- */
.navbar {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  height: 60px;
  display: flex;
  align-items: center;
  padding: 0 28px;
  background: var(--nav-bg);
  border-bottom: 1px solid var(--nav-border);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  gap: 4px;
}

/* Logo */
.nav-logo {
  display: flex;
  align-items: center;
  gap: 8px;
  text-decoration: none;
  color: var(--text);
  font-size: 15px;
  font-weight: 700;
  letter-spacing: 0.3px;
  flex-shrink: 0;
  margin-right: 12px;
}
.nav-logo img {
  width: 36px;
  height: 36px;
  border-radius: 8px;
  object-fit: contain;
}
.nav-logo .logo-fallback {
  width: 36px; height: 36px;
  border-radius: 8px;
  background: linear-gradient(135deg, #f5a623 0%, #f76b1c 100%);
  display: flex; align-items: center; justify-content: center;
  font-size: 20px;
  flex-shrink: 0;
}

.nav-spacer { flex: 1; }

/* Generic nav button */
.nav-btn {
  display: flex;
  align-items: center;
  gap: 5px;
  padding: 6px 11px;
  border-radius: var(--radius);
  font-size: 13.5px;
  color: var(--text);
  background: transparent;
  border: none;
  cursor: pointer;
  transition: background 0.16s, color 0.16s;
  white-space: nowrap;
  text-decoration: none;
  line-height: 1;
}
.nav-btn:hover { background: var(--btn-outline-hover); }
.nav-btn svg { flex-shrink: 0; }

/* Lang toggle */
.nav-lang {
  border: 1px solid var(--btn-outline);
  font-size: 13px;
  padding: 5px 11px;
}
.nav-lang:hover { border-color: var(--btn-outline-hover); }

/* Theme toggle */
.nav-theme {
  width: 34px; height: 34px;
  padding: 0;
  justify-content: center;
  border-radius: 50%;
}

/* Divider */
.nav-divider {
  width: 1px; height: 18px;
  background: var(--nav-border);
  margin: 0 2px;
  flex-shrink: 0;
}

/* 积分 badge */
.nav-points {
  display: flex;
  align-items: center;
  gap: 5px;
  padding: 5px 12px;
  border-radius: 20px;
  background: var(--gold-bg);
  border: 1px solid var(--gold-border);
  color: var(--gold);
  font-size: 13px;
  font-weight: 600;
  white-space: nowrap;
  cursor: default;
}
.nav-points svg { color: var(--gold); }

/* 充值 */
.nav-recharge {
  display: flex; align-items: center; gap: 5px;
  padding: 6px 13px;
  border-radius: var(--radius);
  background: transparent;
  border: 1px solid var(--btn-outline);
  color: var(--text);
  font-size: 13px;
  cursor: pointer;
  transition: background 0.16s, border-color 0.16s;
  white-space: nowrap;
  text-decoration: none;
}
.nav-recharge:hover { background: var(--btn-outline-hover); border-color: var(--btn-outline-hover); }

/* 客服 */
.nav-service {
  display: flex; align-items: center; gap: 5px;
  padding: 6px 13px;
  border-radius: var(--radius);
  background: transparent;
  border: 1px solid var(--btn-outline);
  color: var(--text);
  font-size: 13px;
  cursor: pointer;
  transition: background 0.16s;
  white-space: nowrap;
}
.nav-service:hover { background: var(--btn-outline-hover); }

/* 登录按钮 */
.nav-login {
  display: flex; align-items: center; gap: 6px;
  padding: 7px 18px;
  border-radius: var(--radius);
  background: linear-gradient(135deg, #3b6eff 0%, #5b8fff 100%);
  color: #fff;
  font-size: 13.5px;
  font-weight: 600;
  border: none;
  cursor: pointer;
  transition: transform 0.16s, box-shadow 0.16s;
  box-shadow: 0 2px 14px rgba(59,110,255,0.35);
  text-decoration: none;
  white-space: nowrap;
}
.nav-login:hover {
  transform: translateY(-1px);
  box-shadow: 0 4px 20px rgba(59,110,255,0.5);
}

/* 个人信息 */
.nav-user { position: relative; }
.nav-user-btn {
  display: flex; align-items: center; gap: 6px;
  padding: 5px 12px 5px 7px;
  border-radius: 20px;
  background: var(--btn-outline);
  border: 1px solid var(--nav-border);
  color: var(--text);
  font-size: 13px;
  cursor: pointer;
  transition: background 0.16s;
  white-space: nowrap;
}
.nav-user-btn:hover { background: var(--btn-outline-hover); }
.nav-user-avatar {
  width: 26px; height: 26px;
  border-radius: 50%;
  background: linear-gradient(135deg, #3b6eff, #a78bfa);
  display: flex; align-items: center; justify-content: center;
  font-size: 12px; font-weight: 700; color: #fff;
  flex-shrink: 0;
}
.nav-user-chevron { transition: transform 0.2s; }
.nav-user-btn[aria-expanded="true"] .nav-user-chevron { transform: rotate(180deg); }

/* Dropdown */
.nav-dropdown {
  position: absolute;
  top: calc(100% + 10px);
  right: 0;
  min-width: 162px;
  background: var(--dropdown-bg);
  border-radius: 12px;
  box-shadow: 0 8px 32px rgba(0,0,0,0.18), 0 2px 8px rgba(0,0,0,0.08);
  padding: 8px 0;
  opacity: 0;
  visibility: hidden;
  transform: translateY(-8px);
  transition: opacity 0.16s, visibility 0.16s, transform 0.16s;
  z-index: 200;
}
.nav-dropdown.open {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}
.dropdown-item {
  display: flex; align-items: center; gap: 10px;
  padding: 10px 18px;
  font-size: 14px;
  color: var(--dropdown-text);
  cursor: pointer;
  transition: background 0.14s;
  white-space: nowrap;
  border: none; background: none;
  width: 100%; text-align: left;
  text-decoration: none;
}
.dropdown-item:hover { background: var(--dropdown-hover); }
.dropdown-item.danger { color: var(--dropdown-danger); }
.dropdown-item svg { flex-shrink: 0; opacity: 0.65; }
.dropdown-divider { height: 1px; background: #e8eaf0; margin: 5px 0; }

/* ---------- Auth visibility ---------- */
/* 未登录时隐藏登录态元素，已登录时隐藏访客元素 */
.navbar.guest .auth-only { display: none !important; }
.navbar.loggedin .guest-only { display: none !important; }

/* ---------- Hero ---------- */
.hero {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
  text-align: center;
  padding: 80px 24px 100px;
}

/* 背景视频：充满 hero，object-fit cover 裁切适配 */
.hero-video {
  position: absolute;
  inset: 0;
  z-index: 0;
  width: 100%; height: 100%;
  object-fit: cover;
  object-position: center;
  pointer-events: none;
}

/* 视频遮罩：渐变压暗，让文字清晰 */
.hero-overlay {
  position: absolute;
  inset: 0;
  z-index: 1;
  background:
    linear-gradient(to bottom,
      rgba(8, 9, 20, 0.55) 0%,
      rgba(8, 9, 20, 0.35) 40%,
      rgba(8, 9, 20, 0.60) 100%),
    radial-gradient(ellipse 80% 60% at 50% 70%, rgba(59,110,255,0.15) 0%, transparent 70%);
}

/* Particles */
.particles { position: absolute; inset: 0; z-index: 2; pointer-events: none; }
.particle {
  position: absolute;
  border-radius: 50%;
  animation: float-up linear infinite;
}
@keyframes float-up {
  0%   { transform: translateY(0) scale(1); opacity: 0; }
  10%  { opacity: 1; }
  90%  { opacity: 0.6; }
  100% { transform: translateY(-420px) scale(0); opacity: 0; }
}

/* Hero content */
.hero-content {
  position: relative; z-index: 3;
  max-width: 700px;
}
.hero-tag {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 5px 14px;
  border-radius: 20px;
  background: var(--tag-bg);
  border: 1px solid var(--tag-border);
  font-size: 13px;
  color: #7ba4ff;
  margin-bottom: 28px;
  letter-spacing: 0.3px;
}
.hero-tag .dot {
  width: 6px; height: 6px;
  border-radius: 50%;
  background: #3b6eff;
  animation: pulse 2s ease-in-out infinite;
}
@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50%       { opacity: 0.45; transform: scale(0.75); }
}

.hero-title {
  font-size: clamp(34px, 5.5vw, 56px);
  font-weight: 800;
  line-height: 1.18;
  letter-spacing: -0.5px;
  color: #fff;
  text-shadow: 0 0 60px rgba(59,110,255,0.28);
  margin-bottom: 18px;
}
.hero-title .highlight {
  background: linear-gradient(90deg, #5b8fff 0%, #a78bfa 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-sub {
  font-size: 17px;
  line-height: 1.8;
  color: var(--text-sub);
  margin-bottom: 40px;
}

.hero-actions {
  display: flex; align-items: center; justify-content: center;
  gap: 14px; flex-wrap: wrap;
}
.btn-primary {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 13px 32px;
  border-radius: 10px;
  background: linear-gradient(135deg, #3b6eff 0%, #5b8fff 100%);
  color: #fff;
  font-size: 16px; font-weight: 600;
  border: none; cursor: pointer;
  transition: transform 0.16s, box-shadow 0.16s;
  box-shadow: 0 4px 24px rgba(59,110,255,0.4);
  text-decoration: none;
}
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 8px 32px rgba(59,110,255,0.55); }

.btn-secondary {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 13px 26px;
  border-radius: 10px;
  background: rgba(255,255,255,0.06);
  color: var(--text);
  font-size: 15px; font-weight: 500;
  border: 1px solid rgba(255,255,255,0.14);
  cursor: pointer;
  transition: background 0.16s, border-color 0.16s;
  text-decoration: none;
}
.btn-secondary:hover { background: rgba(255,255,255,0.11); border-color: rgba(255,255,255,0.22); }

/* ---------- Footer ---------- */
.footer {
  position: fixed;
  bottom: 0; left: 0; right: 0; z-index: 50;
  padding: 14px 24px;
  text-align: center;
  font-size: 12.5px;
  color: rgba(255,255,255,0.25);
  pointer-events: none;
}
[data-theme="light"] .footer { color: rgba(0,0,0,0.28); }

/* ---------- Login Modal ---------- */
.modal-mask {
  position: fixed; inset: 0; z-index: 1000;
  background: rgba(0,0,0,0.6);
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
  display: flex; align-items: center; justify-content: center;
  opacity: 0; visibility: hidden;
  transition: opacity 0.22s, visibility 0.22s;
}
.modal-mask.open {
  opacity: 1; visibility: visible;
}

.modal-box {
  position: relative;
  width: 100%; max-width: 400px;
  margin: 16px;
  background: #13152a;
  border: 1px solid rgba(255,255,255,0.1);
  border-radius: 18px;
  padding: 40px 36px 36px;
  box-shadow: 0 24px 64px rgba(0,0,0,0.5);
  transform: translateY(16px);
  transition: transform 0.22s;
}
.modal-mask.open .modal-box { transform: translateY(0); }

[data-theme="light"] .modal-box {
  background: #fff;
  border-color: rgba(0,0,0,0.08);
  box-shadow: 0 16px 48px rgba(0,0,0,0.14);
}

.modal-close {
  position: absolute; top: 16px; right: 16px;
  width: 32px; height: 32px;
  border-radius: 50%; border: none;
  background: rgba(255,255,255,0.08);
  color: var(--text-sub);
  cursor: pointer; display: flex; align-items: center; justify-content: center;
  transition: background 0.15s, color 0.15s;
}
.modal-close:hover { background: rgba(255,255,255,0.16); color: var(--text); }
[data-theme="light"] .modal-close { background: rgba(0,0,0,0.06); }

.modal-logo {
  font-size: 36px; text-align: center; margin-bottom: 12px;
  line-height: 1;
}
.modal-title {
  font-size: 20px; font-weight: 700; text-align: center;
  color: var(--text); margin-bottom: 6px;
}
.modal-sub {
  font-size: 13px; color: var(--text-sub); text-align: center;
  margin-bottom: 24px;
}

.modal-error {
  min-height: 0; max-height: 0; overflow: hidden;
  font-size: 13px; color: #f87171; text-align: center;
  border-radius: 8px;
  transition: min-height 0.2s, padding 0.2s, max-height 0.2s;
}
.modal-error.show {
  min-height: 36px; max-height: 60px;
  padding: 8px 12px;
  background: rgba(248,113,113,0.1);
  border: 1px solid rgba(248,113,113,0.25);
  margin-bottom: 14px;
}

.form-field {
  margin-bottom: 16px;
}
.form-field label {
  display: block; font-size: 13px;
  color: var(--text-sub); margin-bottom: 6px;
}
.form-field input {
  width: 100%; padding: 11px 14px;
  border-radius: 10px;
  background: rgba(255,255,255,0.06);
  border: 1px solid rgba(255,255,255,0.12);
  color: var(--text); font-size: 14px;
  outline: none;
  transition: border-color 0.16s, background 0.16s;
}
.form-field input::placeholder { color: var(--text-sub); }
.form-field input:focus {
  border-color: var(--accent);
  background: rgba(59,110,255,0.06);
}
[data-theme="light"] .form-field input {
  background: #f4f6fb; border-color: #d8dce8;
}
[data-theme="light"] .form-field input:focus {
  background: #eef1ff; border-color: var(--accent);
}

.input-wrap { position: relative; }
.input-wrap input { padding-right: 42px; }
.pwd-toggle {
  position: absolute; right: 12px; top: 50%; transform: translateY(-50%);
  border: none; background: none; color: var(--text-sub);
  cursor: pointer; padding: 4px;
  transition: color 0.15s;
}
.pwd-toggle:hover { color: var(--text); }

.modal-submit {
  width: 100%; padding: 13px;
  border-radius: 10px; border: none; cursor: pointer;
  background: linear-gradient(135deg, #3b6eff 0%, #5b8fff 100%);
  color: #fff; font-size: 15px; font-weight: 600;
  margin-top: 8px;
  display: flex; align-items: center; justify-content: center; gap: 8px;
  transition: transform 0.15s, box-shadow 0.15s, opacity 0.15s;
  box-shadow: 0 4px 20px rgba(59,110,255,0.35);
}
.modal-submit:hover:not(:disabled) {
  transform: translateY(-1px); box-shadow: 0 6px 28px rgba(59,110,255,0.5);
}
.modal-submit:disabled { opacity: 0.6; cursor: not-allowed; }

.btn-spinner {
  display: none; width: 16px; height: 16px;
  border: 2px solid rgba(255,255,255,0.4);
  border-top-color: #fff; border-radius: 50%;
  animation: spin 0.7s linear infinite;
}
.modal-submit.loading .btn-spinner { display: block; }
.modal-submit.loading #loginBtnText { display: none; }
@keyframes spin { to { transform: rotate(360deg); } }

/* ---------- 登录弹窗 - 注册区域 ---------- */
.modal-divider {
  display: flex; align-items: center; gap: 10px;
  margin: 18px 0 14px;
  color: var(--text-sub);
  font-size: 12px;
}
.modal-divider::before,
.modal-divider::after {
  content: '';
  flex: 1;
  height: 1px;
  background: rgba(255,255,255,0.1);
}
[data-theme="light"] .modal-divider::before,
[data-theme="light"] .modal-divider::after {
  background: rgba(0,0,0,0.1);
}

.modal-register-btn {
  display: flex; align-items: center; justify-content: center; gap: 7px;
  width: 100%; padding: 12px;
  border-radius: 10px;
  border: 1.5px solid rgba(99,130,255,0.4);
  background: rgba(59,110,255,0.06);
  color: #7b9fff;
  font-size: 14px; font-weight: 600;
  text-decoration: none;
  cursor: pointer;
  transition: border-color .18s, background .18s, color .18s, transform .15s;
  letter-spacing: 0.3px;
}
.modal-register-btn:hover {
  border-color: #5b8fff;
  background: rgba(59,110,255,0.14);
  color: #a0bcff;
  transform: translateY(-1px);
}
[data-theme="light"] .modal-register-btn {
  border-color: rgba(59,110,255,0.3);
  background: rgba(59,110,255,0.04);
  color: #3b6eff;
}
[data-theme="light"] .modal-register-btn:hover {
  border-color: #3b6eff;
  background: rgba(59,110,255,0.1);
  color: #2a55dd;
}

/* ---------- Responsive ---------- */
@media (max-width: 900px) {
  .nav-tools-text { display: none; }
}
@media (max-width: 768px) {
  .navbar { padding: 0 14px; gap: 2px; }
  .nav-btn { padding: 6px 8px; }
  .nav-lang-text { display: none; }
  .nav-recharge span { display: none; }
  .nav-service span { display: none; }
  .nav-user-phone { display: none; }
}