/* ============================================================
 * 疆狗 Gjango — 공通 CSS
 * 所有页面共享：CSS 变量、导航栏、卡片、按钮、动画
 * ============================================================ */

/* ===== CSS 变量 ===== */
:root {
    /* 背景 */
    --bg: #080c14;
    --bg2: #0f1623;
    --bg3: #1a2133;
    --bg4: #1e2840;

    /* 边框 */
    --border: rgba(255, 255, 255, .08);
    --border2: rgba(255, 255, 255, .12);

    /* 主色：紫 */
    --accent: #7c3aed;
    --accent2: #a855f7;
    --accent3: #c084fc;
    --accent-gl: rgba(124, 58, 237, .15);
    --accent-glow: 0 0 40px rgba(124, 58, 237, .35);

    /* 金色点缀 */
    --gold: #f59e0b;
    --gold2: #fbbf24;

    /* 语义色 */
    --green: #10b981;
    --red: #ef4444;
    --amber: #f59e0b;
    --blue: #3b82f6;

    /* 文字 */
    --text: #e8edf5;
    --text2: #9ca3b0;
    --text3: #5c6472;

    /* 圆角 */
    --r-sm: 8px;
    --r-md: 14px;
    --r-lg: 20px;
    --r-xl: 28px;
    --r-full: 999px;

    /* 过渡 */
    --ease-spring: cubic-bezier(.34, 1.56, .64, 1);
    --ease-smooth: cubic-bezier(.16, 1, .3, 1);
}

/* ===== 全局重置 ===== */
*,
*::before,
*::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', system-ui, sans-serif;
    background: var(--bg);
    color: var(--text);
    min-height: 100vh;
    -webkit-font-smoothing: antialiased;
}

a {
    color: inherit;
    text-decoration: none;
}

button {
    font-family: inherit;
    cursor: pointer;
}

input,
select,
textarea {
    font-family: inherit;
}

/* ===== 背景辉光（全局） ===== */
.bg-glow {
    position: fixed;
    inset: 0;
    pointer-events: none;
    z-index: 0;
    background:
        radial-gradient(ellipse 70% 50% at 15% 10%, rgba(124, 58, 237, .12) 0%, transparent 60%),
        radial-gradient(ellipse 50% 40% at 85% 85%, rgba(168, 85, 247, .07) 0%, transparent 60%),
        radial-gradient(ellipse 40% 30% at 50% 50%, rgba(59, 130, 246, .04) 0%, transparent 60%);
}

/* ===== 导航栏 ===== */
.nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    height: 60px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 28px;
    background: rgba(8, 12, 20, .85);
    border-bottom: 1px solid var(--border);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
}

/* 品牌 LOGO */
.nav-brand {
    display: flex;
    align-items: center;
    gap: 10px;
    text-decoration: none;
}

.nav-logo {
    width: 36px;
    height: 36px;
    border-radius: 10px;
    background: linear-gradient(135deg, var(--accent), var(--accent2));
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 18px;
    font-weight: 900;
    color: #fff;
    box-shadow: 0 4px 16px rgba(124, 58, 237, .4);
    letter-spacing: -1px;
    position: relative;
}

.nav-logo::after {
    content: '';
    position: absolute;
    inset: -1px;
    border-radius: 11px;
    background: linear-gradient(135deg, rgba(255, 255, 255, .2), transparent);
    pointer-events: none;
}

.nav-name {
    font-size: 1.1rem;
    font-weight: 800;
    background: linear-gradient(135deg, #fff 0%, var(--accent3) 100%);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    letter-spacing: -.3px;
}

.nav-name-cn {
    font-size: .7rem;
    color: var(--text3);
    font-weight: 400;
    display: block;
    letter-spacing: .5px;
    margin-top: -2px;
    -webkit-text-fill-color: var(--text3);
}

/* 导航链接 */
.nav-links {
    display: flex;
    align-items: center;
    gap: 6px;
    list-style: none;
}

.nav-links a {
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 6px 14px;
    border-radius: var(--r-full);
    font-size: .85rem;
    font-weight: 500;
    color: var(--text2);
    transition: all .2s;
}

.nav-links a:hover,
.nav-links a.active {
    color: var(--text);
    background: rgba(255, 255, 255, .06);
}

.nav-links a.active {
    color: var(--accent3);
}

/* 右侧操作区 */
.nav-actions {
    display: flex;
    align-items: center;
    gap: 10px;
}

/* 登录/注册按钮 */
.btn-nav-login {
    padding: 7px 18px;
    border-radius: var(--r-full);
    border: 1px solid var(--border2);
    background: transparent;
    color: var(--text2);
    font-size: .83rem;
    font-weight: 500;
    transition: all .2s;
}

.btn-nav-login:hover {
    border-color: var(--accent);
    color: var(--accent3);
}

.btn-nav-start {
    padding: 7px 18px;
    border-radius: var(--r-full);
    border: none;
    background: linear-gradient(135deg, var(--accent), var(--accent2));
    color: #fff;
    font-size: .83rem;
    font-weight: 600;
    box-shadow: 0 2px 12px rgba(124, 58, 237, .4);
    transition: all .2s;
}

.btn-nav-start:hover {
    transform: translateY(-1px);
    box-shadow: 0 4px 20px rgba(124, 58, 237, .6);
}

/* 头像按钮 */
.nav-avatar {
    width: 34px;
    height: 34px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--accent), var(--gold));
    border: 2px solid rgba(124, 58, 237, .4);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: .82rem;
    font-weight: 700;
    color: #fff;
    cursor: pointer;
    transition: all .2s;
    text-decoration: none;
}

.nav-avatar:hover {
    transform: scale(1.08);
    box-shadow: 0 0 16px rgba(124, 58, 237, .5);
}

/* ===== 通用卡片 ===== */
.card {
    background: var(--bg2);
    border: 1px solid var(--border);
    border-radius: var(--r-lg);
    padding: 24px;
    transition: border-color .3s;
}

.card:hover {
    border-color: var(--border2);
}

.card-glass {
    background: rgba(15, 22, 35, .6);
    backdrop-filter: blur(20px);
    border: 1px solid var(--border2);
    border-radius: var(--r-lg);
}

/* ===== 通用按钮 ===== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 12px 28px;
    border-radius: var(--r-full);
    border: none;
    font-size: .95rem;
    font-weight: 600;
    cursor: pointer;
    transition: all .25s var(--ease-spring);
}

.btn-primary {
    background: linear-gradient(135deg, var(--accent), var(--accent2));
    color: #fff;
    box-shadow: 0 4px 20px rgba(124, 58, 237, .4);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 28px rgba(124, 58, 237, .6);
}

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

.btn-secondary {
    background: var(--bg3);
    color: var(--text);
    border: 1px solid var(--border2);
}

.btn-secondary:hover {
    background: var(--bg4);
    border-color: var(--accent);
    color: var(--accent3);
}

.btn-ghost {
    background: transparent;
    color: var(--text2);
    border: 1px solid var(--border);
}

.btn-ghost:hover {
    background: rgba(255, 255, 255, .04);
    color: var(--text);
}

.btn-danger {
    background: rgba(239, 68, 68, .1);
    color: #fca5a5;
    border: 1px solid rgba(239, 68, 68, .2);
}

.btn-danger:hover {
    background: rgba(239, 68, 68, .2);
    border-color: rgba(239, 68, 68, .4);
}

.btn:disabled {
    opacity: .45;
    cursor: not-allowed;
    transform: none !important;
}

.btn-sm {
    padding: 8px 18px;
    font-size: .83rem;
}

.btn-lg {
    padding: 16px 40px;
    font-size: 1.1rem;
}

.btn-full {
    width: 100%;
}

/* ===== 表单组件 ===== */
.form-group {
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.form-label {
    font-size: .78rem;
    font-weight: 600;
    color: var(--text2);
    letter-spacing: .5px;
    text-transform: uppercase;
}

.form-input {
    background: var(--bg3);
    border: 1px solid var(--border2);
    color: var(--text);
    border-radius: var(--r-sm);
    padding: 12px 16px;
    font-size: .95rem;
    outline: none;
    transition: border-color .2s, box-shadow .2s;
    width: 100%;
}

.form-input:focus {
    border-color: var(--accent);
    box-shadow: 0 0 0 3px rgba(124, 58, 237, .15);
}

.form-input::placeholder {
    color: var(--text3);
}

/* ===== 徽章 ===== */
.badge {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    padding: 3px 10px;
    border-radius: var(--r-full);
    font-size: .7rem;
    font-weight: 600;
}

.badge-purple {
    background: var(--accent-gl);
    color: var(--accent3);
    border: 1px solid rgba(124, 58, 237, .25);
}

.badge-gold {
    background: rgba(245, 158, 11, .1);
    color: var(--gold2);
    border: 1px solid rgba(245, 158, 11, .2);
}

.badge-green {
    background: rgba(16, 185, 129, .1);
    color: #34d399;
    border: 1px solid rgba(16, 185, 129, .2);
}

/* ===== 错误横幅 ===== */
.error-banner {
    position: fixed;
    bottom: 24px;
    left: 50%;
    transform: translateX(-50%);
    background: rgba(239, 68, 68, .12);
    border: 1px solid rgba(239, 68, 68, .25);
    border-radius: var(--r-md);
    padding: 12px 24px;
    color: #fca5a5;
    font-size: .83rem;
    z-index: 2000;
    display: none;
    align-items: center;
    gap: 10px;
    backdrop-filter: blur(12px);
    max-width: 90%;
    text-align: center;
    animation: slide-up .3s var(--ease-smooth);
}

.error-banner.show {
    display: flex;
}

/* ===== 成功横幅 ===== */
.success-banner {
    position: fixed;
    bottom: 24px;
    left: 50%;
    transform: translateX(-50%);
    background: rgba(16, 185, 129, .12);
    border: 1px solid rgba(16, 185, 129, .25);
    border-radius: var(--r-md);
    padding: 12px 24px;
    color: #34d399;
    font-size: .83rem;
    z-index: 2000;
    display: none;
    align-items: center;
    gap: 10px;
    backdrop-filter: blur(12px);
}

.success-banner.show {
    display: flex;
}

/* ===== 状态小圆点 ===== */
.status-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--text3);
    transition: background .3s;
}

.status-dot.connecting {
    background: var(--amber);
    animation: pulse 1s infinite;
}

.status-dot.recording {
    background: var(--red);
    animation: pulse .6s infinite;
}

.status-dot.connected {
    background: var(--green);
}

.status-dot.error {
    background: var(--red);
}

/* ===== 主要内容区（有导航栏时添加 pt） ===== */
.page-content {
    padding-top: 60px;
    min-height: 100vh;
}

/* ===== 分隔线 ===== */
.divider {
    border: none;
    border-top: 1px solid var(--border);
    margin: 24px 0;
}

/* ===== 动画 ===== */
@keyframes pulse {

    0%,
    100% {
        opacity: 1
    }

    50% {
        opacity: .3
    }
}

@keyframes slide-up {
    from {
        opacity: 0;
        transform: translate(-50%, 16px)
    }

    to {
        opacity: 1;
        transform: translate(-50%, 0)
    }
}

@keyframes fade-in {
    from {
        opacity: 0;
        transform: translateY(12px)
    }

    to {
        opacity: 1;
        transform: none
    }
}

@keyframes shimmer {
    0% {
        background-position: -200% center
    }

    100% {
        background-position: 200% center
    }
}

.animate-in {
    animation: fade-in .5s var(--ease-smooth) both;
}

.animate-in-delay-1 {
    animation-delay: .1s;
}

.animate-in-delay-2 {
    animation-delay: .2s;
}

.animate-in-delay-3 {
    animation-delay: .3s;
}

/* ===== 工具类 ===== */
.hidden {
    display: none !important;
}

.text-center {
    text-align: center;
}

.text-muted {
    color: var(--text2);
}

.fullscreen {
    min-height: 100vh;
}

/* ===== 移动端适配 ===== */
@media (max-width:640px) {
    .nav {
        padding: 0 16px;
    }

    .nav-links {
        display: none;
    }
}

/* ===== 用户菜单按钮（登录后右上角） ===== */
.user-menu-wrap {
    position: relative;
}

/* 按钮：首字母 + ⚙ */
.user-menu-btn {
    display: flex;
    align-items: center;
    gap: 6px;
    background: rgba(124, 58, 237, .12);
    border: 1px solid rgba(124, 58, 237, .28);
    border-radius: var(--r-full);
    padding: 5px 14px 5px 8px;
    cursor: pointer;
    color: var(--text);
    font-size: .85rem;
    font-weight: 600;
    font-family: inherit;
    transition: background .2s, border-color .2s;
    white-space: nowrap;
}

.user-menu-btn:hover {
    background: rgba(124, 58, 237, .22);
    border-color: rgba(124, 58, 237, .5);
}

/* 首字母头像小圆 */
.user-menu-initial {
    width: 24px;
    height: 24px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--accent), var(--gold));
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: .75rem;
    font-weight: 800;
    color: #fff;
    flex-shrink: 0;
}

/* 齿轮图标 */
.user-menu-gear {
    font-size: .85rem;
    opacity: .6;
    transition: transform .3s;
}

.user-menu-btn.open .user-menu-gear {
    transform: rotate(90deg);
}

/* 下拉菜单 */
.user-dropdown {
    position: absolute;
    top: calc(100% + 10px);
    right: 0;
    background: var(--bg2);
    border: 1px solid var(--border2);
    border-radius: var(--r-md);
    padding: 6px;
    min-width: 168px;
    box-shadow: 0 16px 48px rgba(0, 0, 0, .5), 0 0 0 1px rgba(255, 255, 255, .04);
    z-index: 9999;
    display: none;
    animation: fade-in .15s var(--ease-smooth);
}

.user-dropdown.open {
    display: block;
}

/* 菜单项通用 */
.user-dropdown a,
.user-dropdown button {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 9px 14px;
    border-radius: var(--r-sm);
    text-decoration: none;
    color: var(--text);
    font-size: .85rem;
    font-weight: 500;
    background: none;
    border: none;
    cursor: pointer;
    font-family: inherit;
    width: 100%;
    text-align: left;
    transition: background .15s;
}

.user-dropdown a:hover,
.user-dropdown button:hover {
    background: rgba(255, 255, 255, .06);
}

/* 危险操作（退出） */
.user-dropdown .user-menu-danger {
    color: #fca5a5;
}

.user-dropdown .user-menu-danger:hover {
    background: rgba(239, 68, 68, .1);
    color: #f87171;
}

/* 分隔线 */
.user-dropdown-divider {
    height: 1px;
    background: var(--border);
    margin: 4px 0;
}