/* ============================================================
   认证页样式 (register.php / login.php)
   依赖 css/home.css 的设计令牌与导航/按钮/背景, 本文件只放认证卡片
   ============================================================ */

.auth-wrap {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: calc(var(--nav-h) + 40px) 20px 60px;
}

.auth-card {
    width: 100%;
    max-width: 440px;
    background: var(--panel);
    border: 1px solid var(--line);
    border-radius: 20px;
    padding: 42px 38px 34px;
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    box-shadow: 0 24px 70px rgba(0, 0, 0, 0.45);
    position: relative;
    overflow: hidden;
    animation: auth-in 0.6s cubic-bezier(0.16, 1, 0.3, 1) both;
}

@keyframes auth-in {
    from { opacity: 0; transform: translateY(22px); }
    to { opacity: 1; transform: translateY(0); }
}

/* 顶部光条 */
.auth-card::before {
    content: '';
    position: absolute;
    top: 0; left: 10%; right: 10%;
    height: 1px;
    background: linear-gradient(90deg, transparent, rgba(59, 130, 246, 0.55), transparent);
}

html[data-theme="light"] .auth-card {
    box-shadow: 0 24px 60px rgba(30, 60, 120, 0.16);
}

html[data-theme="light"] .auth-card::before {
    background: linear-gradient(90deg, transparent, rgba(37, 99, 235, 0.4), transparent);
}

html[data-theme="light"] .login-footer a,
html[data-theme="light"] .forgot-link:hover,
html[data-theme="light"] .toggle-password:hover { color: #2563eb; }

/* ---------- 头部 ---------- */
.login-header { text-align: center; margin-bottom: 28px; }

.login-logo {
    width: 58px; height: 58px;
    margin: 0 auto 18px;
    border-radius: 15px;
    background: rgba(59, 130, 246, 0.12);
    border: 1px solid rgba(59, 130, 246, 0.28);
    display: grid;
    place-items: center;
    font-size: 24px;
    color: var(--blue);
}

.login-header h2 {
    font-size: 24px;
    font-weight: 700;
    color: var(--text);
    letter-spacing: -0.01em;
}

.auth-sub { font-size: 14px; color: var(--text-3); margin-top: 8px; }

/* ---------- 表单 ---------- */
.login-form .input-group {
    display: flex;
    align-items: center;
    background: rgba(148, 163, 184, 0.07);
    border: 1px solid var(--line);
    border-radius: 12px;
    margin-bottom: 16px;
    transition: border-color 0.25s ease, box-shadow 0.25s ease;
}

html[data-theme="light"] .login-form .input-group { background: rgba(20, 45, 90, 0.045); }

.login-form .input-group:focus-within {
    border-color: var(--line-bright);
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.14);
}

.login-form .input-group label {
    padding: 0 4px 0 15px;
    color: var(--text-3);
    font-size: 15px;
    margin: 0;
    cursor: text;
}

.login-form .input-group input {
    flex: 1;
    min-width: 0;
    background: transparent;
    border: none;
    outline: none;
    color: var(--text);
    font-size: 14.5px;
    font-family: inherit;
    padding: 13.5px 14px 13.5px 10px;
}

.login-form .input-group input::placeholder { color: var(--text-3); }

/* 浏览器自动填充底色矫正 */
.login-form .input-group input:-webkit-autofill {
    -webkit-text-fill-color: var(--text);
    -webkit-box-shadow: 0 0 0 1000px transparent inset;
    transition: background-color 99999s ease-in-out 0s;
}

.toggle-password {
    padding: 0 15px;
    color: var(--text-3);
    cursor: pointer;
    transition: color 0.2s ease;
}

.toggle-password:hover { color: var(--blue); }

/* 提交按钮 */
.btn-login {
    width: 100%;
    padding: 14px;
    margin-top: 6px;
    border: none;
    border-radius: 12px;
    background: linear-gradient(180deg, #4187f6, #2f6bef);
    color: #fff;
    font-size: 15.5px;
    font-weight: 600;
    font-family: inherit;
    cursor: pointer;
    transition: all 0.25s cubic-bezier(0.16, 1, 0.3, 1);
    box-shadow: 0 2px 12px rgba(47, 107, 239, 0.3);
}

.btn-login:hover {
    background: linear-gradient(180deg, #4d90ff, #3574f5);
    transform: translateY(-1px);
    box-shadow: 0 4px 16px rgba(47, 107, 239, 0.4);
}

html[data-theme="light"] .btn-login {
    background: #2563eb;
    box-shadow: 0 2px 8px rgba(37, 99, 235, 0.25);
}
html[data-theme="light"] .btn-login:hover {
    background: #1d4ed8;
    box-shadow: 0 4px 12px rgba(37, 99, 235, 0.3);
}

/* 按钮加载状态 */
.btn-loading { position: relative; pointer-events: none; opacity: 0.85; }
.btn-loading span { visibility: hidden; }

.btn-loading:after {
    content: "";
    position: absolute;
    width: 17px; height: 17px;
    top: 0; left: 0; right: 0; bottom: 0;
    margin: auto;
    border: 3px solid transparent;
    border-top-color: #fff;
    border-radius: 50%;
    animation: btn-spin 0.9s linear infinite;
}

@keyframes btn-spin { to { transform: rotate(1turn); } }

/* ---------- 记住我 / 忘记密码 ---------- */
.remember-me {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin: 2px 2px 14px;
    font-size: 13.5px;
}

.remember-checkbox { display: flex; align-items: center; gap: 7px; }

.remember-checkbox input {
    width: 15px; height: 15px;
    accent-color: var(--blue);
    cursor: pointer;
}

.remember-checkbox label { color: var(--text-2); cursor: pointer; margin: 0; }

.forgot-link { color: var(--text-3); }
.forgot-link:hover { color: var(--blue); }

/* ---------- 底部链接 ---------- */
.login-footer {
    text-align: center;
    margin-top: 24px;
    font-size: 14px;
}

.login-footer p { color: var(--text-3); }

.login-footer a {
    color: var(--blue);
    font-weight: 600;
}

.login-footer a:hover { text-decoration: underline; }

/* ---------- 消息提示 (主题自适应) ---------- */
.success-message, .error-message, .invite-info, .invite-success {
    padding: 12px 15px;
    border-radius: 10px;
    margin-bottom: 16px;
    font-size: 14px;
    font-weight: 500;
    text-align: center;
}

.success-message, .invite-success {
    background: rgba(52, 211, 153, 0.12);
    border: 1px solid rgba(52, 211, 153, 0.35);
    color: #6ee7b7;
}

.error-message {
    background: rgba(248, 113, 113, 0.12);
    border: 1px solid rgba(248, 113, 113, 0.35);
    color: #fca5a5;
}

.invite-info {
    background: rgba(59, 130, 246, 0.12);
    border: 1px solid rgba(59, 130, 246, 0.35);
    color: #93c5fd;
}

html[data-theme="light"] .success-message,
html[data-theme="light"] .invite-success {
    background: #ecfdf5;
    border-color: #a7f3d0;
    color: #065f46;
}

html[data-theme="light"] .error-message {
    background: #fef2f2;
    border-color: #fecaca;
    color: #991b1b;
}

html[data-theme="light"] .invite-info {
    background: #eff6ff;
    border-color: #bfdbfe;
    color: #1e40af;
}

.form-text {
    color: var(--text-3);
    font-size: 12px;
    margin-top: 5px;
    display: block;
}

/* ---------- Bootstrap Tooltip 定制 ---------- */
.tooltip {
    position: absolute;
    z-index: 1070;
    display: block;
    margin: 0;
    font-size: 13.5px;
    opacity: 0;
    transition: opacity 0.3s;
}

.tooltip.show { opacity: 1; }

.tooltip-inner {
    background-color: #dc3545;
    color: #fff;
    max-width: 300px;
    padding: 6px 11px;
    border-radius: 7px;
    text-align: center;
}

.tooltip .tooltip-arrow {
    position: absolute;
    display: block;
    width: 10px; height: 5px;
}

.tooltip-arrow::before {
    content: "";
    border-color: transparent;
    border-style: solid;
    position: absolute;
}

.bs-tooltip-auto[data-popper-placement^=top] .tooltip-arrow::before,
.bs-tooltip-top .tooltip-arrow::before {
    border-top-color: #dc3545;
    border-width: 5px 5px 0;
    bottom: -5px;
}

.bs-tooltip-auto[data-popper-placement^=bottom] .tooltip-arrow::before,
.bs-tooltip-bottom .tooltip-arrow::before {
    border-bottom-color: #dc3545;
    border-width: 0 5px 5px;
    top: -5px;
}

/* ---------- 响应式 ---------- */
@media (max-width: 480px) {
    .auth-card { padding: 34px 24px 28px; }
}