* { margin: 0; padding: 0; box-sizing: border-box; }
html { font-size: 10px; }
::selection { color: #fff; background-color: #a855f7; }
body { font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif; background: linear-gradient(135deg, #050810 0%, #0a1128 100%); color: #e2e8f0; min-height: 100vh; display: flex; flex-direction: column; }

.header { background: rgba(8, 12, 21, 0.9); backdrop-filter: blur(12px); border-bottom: none; position: sticky; top: 0; z-index: 100; }
.nav { display: flex; justify-content: space-between; align-items: center; max-width: 120rem; margin: 0 auto; padding: 1.5rem 3rem; gap: 2rem; }
.logo { font-size: 2.4rem; font-weight: 700; background: linear-gradient(90deg, #a855f7, #ec4899); -webkit-background-clip: text; background-clip: text; color: transparent; flex-shrink: 0; }
.nav-list { display: flex; list-style: none; gap: 0.5rem; }
.nav-list li { display: flex; align-items: center; }
.nav-list a { text-decoration: none; color: #94a3b8; font-size: 1.6rem; padding: 0.5rem 1rem; transition: all 0.3s ease; border-radius: 0.8rem; white-space: nowrap; }
.nav-list a:hover, .nav-list a.active { color: #a855f7; background: rgba(168, 85, 247, 0.1); }

.nav-avatar { display: flex; align-items: center; gap: 1rem; padding: 0.4rem 1rem; border-radius: 2rem; text-decoration: none; transition: all 0.3s ease; flex-shrink: 0; }
.nav-avatar:hover { background: rgba(168, 85, 247, 0.1); }
.nav-avatar img { width: 3.2rem; height: 3.2rem; border-radius: 50%; object-fit: cover; border: 2px solid rgba(168, 85, 247, 0.4); transition: all 0.3s ease; }
.nav-avatar:hover img { border-color: #a855f7; box-shadow: 0 0 12px rgba(168, 85, 247, 0.4); }
.nav-avatar-name { font-size: 1.4rem; color: #e2e8f0; font-weight: 500; white-space: nowrap; }

/* 导航栏搜索 */
.nav-search { position: relative; flex-shrink: 0; }
.nav-search input { height: 3.6rem; width: 20rem; padding: 0 1rem 0 3.2rem; font-size: 1.4rem; border: 1px solid rgba(168, 85, 247, 0.2); border-radius: 2rem; outline: none; background: rgba(255, 255, 255, 0.04); color: #e2e8f0; transition: all 0.3s; }
.nav-search input::placeholder { color: #475569; }
.nav-search input:focus { border-color: #a855f7; width: 26rem; background: rgba(255, 255, 255, 0.07); box-shadow: 0 0 20px rgba(168, 85, 247, 0.15); }
.nav-search::before { content: '🔍'; position: absolute; left: 1rem; top: 50%; transform: translateY(-50%); font-size: 1.3rem; pointer-events: none; }

/* 账号切换下拉 */
.account-dropdown { display: none; position: absolute; top: calc(100% + 0.8rem); right: 0; min-width: 22rem; background: rgba(15, 23, 42, 0.98); border: 1px solid rgba(168, 85, 247, 0.2); border-radius: 1rem; box-shadow: 0 20px 60px rgba(0, 0, 0, 0.6); z-index: 200; overflow: hidden; backdrop-filter: blur(20px); }
.account-dropdown.show { display: block; animation: dropIn 0.2s ease; }
@keyframes dropIn { from { opacity: 0; transform: translateY(-0.5rem); } to { opacity: 1; transform: translateY(0); } }
.dropdown-header { padding: 1rem 1.5rem; font-size: 1.2rem; color: #64748b; border-bottom: 1px solid rgba(255, 255, 255, 0.05); }
.dropdown-empty { padding: 1.5rem; text-align: center; font-size: 1.3rem; color: #475569; }
.dropdown-item { display: flex; align-items: center; gap: 1rem; padding: 1rem 1.5rem; cursor: pointer; transition: background 0.2s ease; }
.dropdown-item:hover { background: rgba(168, 85, 247, 0.1); }
.dropdown-item img { width: 3rem; height: 3rem; border-radius: 50%; object-fit: cover; border: 1px solid rgba(168, 85, 247, 0.2); }
.dropdown-item span { flex: 1; font-size: 1.4rem; color: #e2e8f0; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.dropdown-remove { background: none; border: none; color: #475569; cursor: pointer; font-size: 1.2rem; padding: 0.3rem; border-radius: 0.3rem; transition: all 0.2s; }
.dropdown-remove:hover { color: #ef4444; background: rgba(239, 68, 68, 0.1); }
.dropdown-footer { padding: 0.8rem 1.5rem; border-top: 1px solid rgba(255, 255, 255, 0.05); }
.dropdown-footer a { font-size: 1.3rem; color: #94a3b8; text-decoration: none; transition: color 0.2s; }
.dropdown-footer a:hover { color: #a855f7; }

/* 通知铃铛 */
.notification-bell { position: relative; flex-shrink: 0; }
.bell-btn { background: none; border: none; font-size: 1.8rem; cursor: pointer; padding: 0.4rem; transition: transform 0.2s; }
.bell-btn:hover { transform: scale(1.15); }
.bell-badge { position: absolute; top: -0.3rem; right: -0.3rem; min-width: 1.6rem; height: 1.6rem; background: linear-gradient(135deg, #ef4444, #dc2626); color: #fff; font-size: 1rem; border-radius: 1rem; display: flex; align-items: center; justify-content: center; font-weight: 700; line-height: 1; }
.notification-panel { display: none; position: fixed; top: 6rem; right: 3rem; width: 36rem; max-height: 50rem; background: rgba(15, 23, 42, 0.98); border: 1px solid rgba(168, 85, 247, 0.2); border-radius: 1rem; box-shadow: 0 20px 60px rgba(0, 0, 0, 0.6); z-index: 250; overflow: hidden; backdrop-filter: blur(20px); }
.notification-panel.show { display: flex; flex-direction: column; animation: dropIn 0.2s ease; }
.notif-header { display: flex; justify-content: space-between; align-items: center; padding: 1.2rem 1.5rem; border-bottom: 1px solid rgba(255, 255, 255, 0.05); font-size: 1.5rem; color: #e2e8f0; font-weight: 600; }
.notif-read-all { background: none; border: none; color: #a855f7; font-size: 1.2rem; cursor: pointer; padding: 0.3rem 0.6rem; border-radius: 0.3rem; transition: all 0.2s; }
.notif-read-all:hover { background: rgba(168, 85, 247, 0.1); }
.notif-list { flex: 1; overflow-y: auto; max-height: 40rem; }
.notif-empty { text-align: center; padding: 3rem; color: #475569; font-size: 1.3rem; }
.notif-item { display: flex; gap: 0.8rem; padding: 1rem 1.5rem; cursor: pointer; transition: background 0.2s; border-bottom: 1px solid rgba(255, 255, 255, 0.03); }
.notif-item:hover { background: rgba(168, 85, 247, 0.05); }
.notif-item.unread { background: rgba(168, 85, 247, 0.04); }
.notif-dot { width: 0.6rem; height: 0.6rem; border-radius: 50%; background: #a855f7; margin-top: 0.6rem; flex-shrink: 0; opacity: 0; }
.notif-item.unread .notif-dot { opacity: 1; }
.notif-title { font-size: 1.3rem; color: #e2e8f0; }
.notif-item.unread .notif-title { font-weight: 600; }
.notif-content { font-size: 1.2rem; color: #64748b; margin-top: 0.3rem; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.notif-time { font-size: 1.1rem; color: #475569; margin-top: 0.3rem; }

.main { flex: 1; display: flex; justify-content: center; align-items: flex-start; padding: 5rem 2rem; }

.profile-box { width: 60rem; background: linear-gradient(135deg, rgba(168, 85, 247, 0.06) 0%, rgba(236, 72, 153, 0.04) 100%); border: 1px solid rgba(168, 85, 247, 0.15); border-radius: 1.5rem; padding: 4rem; box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.5); }

.profile-box h4 { font-size: 2.4rem; font-weight: 700; background: linear-gradient(90deg, #a855f7, #ec4899); -webkit-background-clip: text; background-clip: text; color: transparent; text-align: center; margin-bottom: 3rem; }

.avatar-section { display: flex; flex-direction: column; align-items: center; margin-bottom: 3rem; }
.avatar-section .avatar { width: 10rem; height: 10rem; border-radius: 50%; object-fit: cover; border: 0.3rem solid #a855f7; margin-bottom: 1rem; box-shadow: 0 0 20px rgba(168, 85, 247, 0.4); }
.avatar-section span { font-size: 1.4rem; color: #64748b; }

.profile-box form { display: flex; flex-direction: column; }

.profile-box .acc { outline: none; width: 100%; height: 5rem; font-size: 1.6rem; padding: 1rem 0 0 1.6rem; border: none; border-bottom: 1px solid rgba(168, 85, 247, 0.3); color: #e2e8f0; background-color: transparent; margin-bottom: 1rem; transition: border-color 0.3s ease; }
.profile-box .acc::placeholder { color: #64748b; }
.profile-box .acc:focus { border-bottom-color: #a855f7; }
.profile-box .acc:disabled { color: #475569; }

.profile-box .bio { height: 10rem; padding: 1rem 0 0 1.6rem; resize: vertical; border: 1px solid rgba(168, 85, 247, 0.3); border-radius: 0.5rem; margin-bottom: 1rem; background: transparent; color: #e2e8f0; }
.profile-box .bio:focus { border-color: #a855f7; outline: none; }

.profile-box .submit { width: 100%; height: 5rem; color: #fff; background: linear-gradient(135deg, #a855f7, #ec4899); font-size: 1.6rem; border: none; border-radius: 0.8rem; cursor: pointer; transition: all 0.3s cubic-bezier(0.34, 1.56, 0.64, 1); margin-top: 1rem; box-shadow: 0 4px 15px rgba(168, 85, 247, 0.3); }
.profile-box .submit:hover { transform: translateY(-3px) scale(1.02); box-shadow: 0 8px 25px rgba(236, 72, 153, 0.5); filter: brightness(1.1); }
.divider { height: 1px; background: rgba(168, 85, 247, 0.15); margin: 2rem 0; }
.profile-box .bio { min-height: 10rem; resize: vertical; }

/* 头像上传 */
.avatar-upload-btn { margin-top: 1rem; padding: 0.6rem 1.5rem; font-size: 1.3rem; border: 1px solid rgba(168, 85, 247, 0.3); border-radius: 0.5rem; background: rgba(168, 85, 247, 0.08); color: #a855f7; cursor: pointer; transition: all 0.2s; }
.avatar-upload-btn:hover { background: rgba(168, 85, 247, 0.2); border-color: #a855f7; }
.upload-status { font-size: 1.2rem; color: #64748b; margin-top: 0.5rem; }

.footer { background: rgba(8, 12, 21, 0.9); border-top: 1px solid rgba(168, 85, 247, 0.1); text-align: center; padding: 2rem; }
.footer p { font-size: 1.4rem; color: #64748b; }

@media (max-width: 65rem) { .profile-box { width: 90%; } }

/* 移动端汉堡菜单 */
.nav-hamburger { display: none; flex-direction: column; gap: 0.5rem; background: none; border: none; cursor: pointer; padding: 0.5rem; z-index: 300; }
.nav-hamburger span { display: block; width: 2.4rem; height: 0.2rem; background: #e2e8f0; border-radius: 0.1rem; transition: all 0.3s; }
.nav-hamburger.open span:nth-child(1) { transform: rotate(45deg) translate(0.5rem, 0.5rem); }
.nav-hamburger.open span:nth-child(2) { opacity: 0; }
.nav-hamburger.open span:nth-child(3) { transform: rotate(-45deg) translate(0.5rem, -0.5rem); }
.mobile-overlay { display: none; position: fixed; inset: 0; background: rgba(0, 0, 0, 0.6); z-index: 50; backdrop-filter: blur(4px); }
.mobile-overlay.show { display: block; }
body.no-scroll { overflow: hidden; }

@media (max-width: 768px) {
    .nav-hamburger { display: flex; }
    .nav-search { display: none; }
    .nav-list { display: none; position: fixed; top: 0; left: 0; width: min(28rem, 80vw); height: 100vh; background: rgba(8, 12, 21, 0.98); flex-direction: column; padding: 8rem 2rem 3rem; gap: 0.5rem; z-index: 200; border-right: 1px solid rgba(168, 85, 247, 0.2); overflow-y: auto; backdrop-filter: blur(20px); }
    .nav-list.mobile-open { display: flex; animation: slideIn 0.3s ease; }
    @keyframes slideIn { from { transform: translateX(-100%); } to { transform: translateX(0); } }
    .nav-list a { font-size: 1.8rem; padding: 1.2rem 1.5rem; }
    .nav-avatar-name { display: none; }
    .profile-box { width: 100%; padding: 2rem; }
    .profile-box h4 { font-size: 2rem; margin-bottom: 2rem; }
    .profile-box .acc { font-size: 1.4rem; }
    .profile-box .submit { font-size: 1.4rem; }
    .notification-panel { width: calc(100% - 2rem); right: 1rem; left: 1rem; max-height: 60vh; }
    .account-dropdown { min-width: 28rem; width: 90vw; max-width: 40rem; right: 1rem; }
    .dropdown-item { padding: 1.2rem 1.5rem; }
    .dropdown-item img { width: 4rem; height: 4rem; }
    .dropdown-item span { font-size: 1.6rem; }
    .bell-btn { padding: 0.6rem; font-size: 2rem; }
}