:root {
    --primary: #0078D4;
    --primary-dark: #005a9e;
    --bg: #f5f7fa;
    --text: #1f2937;
    --muted: #6b7280;
    --border: #e5e7eb;
}

html, body {
    height: 100%;
}

body {
    background: var(--bg);
    color: var(--text);
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Microsoft YaHei", "PingFang SC", sans-serif;
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

main.container {
    flex: 1 0 auto;
}

/* 导航 */
.app-navbar {
    background: linear-gradient(90deg, var(--primary-dark), var(--primary));
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.12);
}

.app-navbar .navbar-brand {
    color: #fff;
    font-weight: 700;
    font-size: 1.25rem;
    letter-spacing: 0.5px;
}

.app-navbar .navbar-brand:hover {
    color: #fff;
}

.brand-icon {
    font-size: 1.4rem;
    vertical-align: -2px;
}

.app-navbar .nav-link {
    color: rgba(255, 255, 255, 0.85);
    font-weight: 500;
}

.app-navbar .nav-link:hover {
    color: #fff;
}

.app-navbar .navbar-toggler {
    border-color: rgba(255, 255, 255, 0.4);
}

.app-navbar .navbar-toggler-icon {
    background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 30 30'%3e%3cpath stroke='rgba(255,255,255,0.85)' stroke-linecap='round' stroke-miterlimit='10' stroke-width='2' d='M4 7h22M4 15h22M4 23h22'/%3e%3c/svg%3e");
}

/* 页脚 */
.app-footer {
    flex-shrink: 0;
    background: #fff;
    border-top: 1px solid var(--border);
    padding: 14px 0;
    color: var(--muted);
    font-size: 0.85rem;
    text-align: center;
}

/* 首页 hero */
.home-hero {
    text-align: center;
    padding: 24px 0 28px;
}

.home-title {
    font-size: 2rem;
    font-weight: 800;
    color: var(--primary);
    margin-bottom: 4px;
}

.home-subtitle {
    color: var(--muted);
    margin-bottom: 0;
}

/* 状态卡片 */
.status-card {
    border: 1px solid var(--border);
    border-radius: 12px;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.04);
}

.status-num {
    font-size: 1.4rem;
    font-weight: 700;
}

.status-label {
    color: var(--muted);
    font-size: 0.85rem;
}

.section-title {
    font-weight: 700;
    margin-bottom: 12px;
}

/* 头像 */
.avatar {
    width: 48px;
    height: 48px;
    border-radius: 50%;
    object-fit: cover;
    flex-shrink: 0;
    background: #e5e7eb;
}

.avatar-sm {
    width: 28px;
    height: 28px;
    border-radius: 50%;
    object-fit: cover;
    background: #e5e7eb;
}

/* 会员徽章 */
.vip-badge {
    border-radius: 999px;
    padding: 0.35em 0.7em;
    font-weight: 600;
}

.vip-0 {
    background: #f3f4f6;
    color: #6b7280;
}

.vip-1 {
    background: #fef3c7;
    color: #b45309;
}

.vip-2 {
    background: linear-gradient(90deg, #f59e0b, #ef4444);
    color: #fff;
}

/* 其它 */
.mono {
    font-family: "Cascadia Code", Consolas, "Courier New", monospace;
    font-size: 0.85rem;
}

.min-width-0 {
    min-width: 0;
}

.card-header {
    font-weight: 600;
    background: #fff;
    border-bottom: 1px solid var(--border);
}

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

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

.btn-outline-primary {
    color: var(--primary);
    border-color: var(--primary);
}

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

a {
    color: var(--primary);
}

/* 上传拖拽区 */
.drop-zone {
    border: 2px dashed #c7d7e6;
    border-radius: 12px;
    background: #fbfdff;
    cursor: pointer;
    transition: border-color .15s, background .15s;
}

.drop-zone:hover,
.drop-zone-active {
    border-color: var(--primary);
    background: #eef6fd;
}

.drop-zone p {
    color: var(--muted);
    margin-bottom: 0;
}

/* 登录页 */
.login-page {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: calc(100vh - 160px);
    padding: 24px 16px;
}

.login-card {
    width: 100%;
    max-width: 360px;
    background: #fff;
    border-radius: 16px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.06);
    padding: 40px 28px 36px;
    text-align: center;
}

.login-brand {
    margin-bottom: 32px;
}

.login-logo {
    width: 72px;
    height: 72px;
    margin: 0 auto 14px;
    border-radius: 50%;
    background: #e5e7eb;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #9ca3af;
}

.login-logo svg {
    width: 38px;
    height: 38px;
}

.login-app-name {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--text);
}

.btn-login-main {
    width: 100%;
    padding: 14px 20px;
    font-size: 1rem;
    font-weight: 600;
    border-radius: 8px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    margin-bottom: 28px;
}

.login-btn-icon {
    width: 22px;
    height: 22px;
}

.login-divider {
    position: relative;
    text-align: center;
    margin-bottom: 24px;
}

.login-divider::before {
    content: "";
    position: absolute;
    top: 50%;
    left: 0;
    right: 0;
    height: 1px;
    background: var(--border);
}

.login-divider span {
    position: relative;
    display: inline-block;
    padding: 0 12px;
    background: #fff;
    color: var(--muted);
    font-size: 0.8rem;
}

.login-alt-list {
    display: flex;
    justify-content: center;
    gap: 20px;
}

.login-alt-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    text-decoration: none;
    color: var(--muted);
    transition: color .15s;
}

.login-alt-item:hover {
    color: var(--primary);
}

.login-alt-icon {
    width: 48px;
    height: 48px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
}

.login-alt-icon svg {
    width: 26px;
    height: 26px;
}

.login-alt-qq {
    background: #12B7F5;
}

.login-alt-label {
    font-size: 0.75rem;
}

@media (max-width: 480px) {
    .login-card {
        padding: 36px 22px 32px;
    }
}

/* 导航用户信息 */
.nav-user {
    display: flex;
    align-items: center;
    padding: 0 12px;
}

.nav-user-name {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    color: #fff;
    font-weight: 500;
    font-size: 0.95rem;
}

.nav-user-avatar {
    width: 28px;
    height: 28px;
    border-radius: 50%;
    object-fit: cover;
    background: rgba(255, 255, 255, 0.2);
}