/* ============================================
   八方援助 - 登录页样式
   ============================================ */

.login-body {
    height: 100vh;
    overflow: hidden;
    display: flex;
    align-items: center;
    justify-content: center;
    background: radial-gradient(ellipse at top, #0f172a 0%, #0a0e1a 100%);
    position: relative;
}

/* 背景动态网格 */
.login-bg-grid {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image:
        linear-gradient(rgba(6, 182, 212, 0.03) 1px, transparent 1px),
        linear-gradient(90deg, rgba(6, 182, 212, 0.03) 1px, transparent 1px);
    background-size: 50px 50px;
    pointer-events: none;
}

/* 背景光晕 */
.login-bg-glow {
    position: absolute;
    width: 600px;
    height: 600px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(6, 182, 212, 0.08) 0%, transparent 70%);
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    pointer-events: none;
    animation: glow-pulse 4s ease-in-out infinite;
}

@keyframes glow-pulse {
    0%, 100% { opacity: 0.5; transform: translate(-50%, -50%) scale(1); }
    50% { opacity: 1; transform: translate(-50%, -50%) scale(1.1); }
}

/* 登录卡片 */
.login-card {
    position: relative;
    width: 420px;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    padding: 40px 36px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.5), 0 0 40px rgba(6, 182, 212, 0.1);
    z-index: 1;
}

/* Logo区域 */
.login-logo {
    text-align: center;
    margin-bottom: 32px;
}

.login-logo-icon {
    font-size: 48px;
    display: block;
    margin-bottom: 12px;
    filter: drop-shadow(0 0 10px rgba(6, 182, 212, 0.4));
}

.login-logo-text {
    font-size: 24px;
    font-weight: bold;
    color: var(--text-primary);
    letter-spacing: 2px;
}

.login-logo-sub {
    font-size: 13px;
    color: var(--text-muted);
    margin-top: 6px;
    letter-spacing: 1px;
}

/* 表单 */
.login-form {
    display: flex;
    flex-direction: column;
    gap: 18px;
}

.login-field {
    position: relative;
}

.login-field-icon {
    position: absolute;
    left: 14px;
    top: 50%;
    transform: translateY(-50%);
    font-size: 16px;
    opacity: 0.5;
    pointer-events: none;
    transition: opacity 0.2s;
}

.login-input {
    width: 100%;
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    padding: 12px 14px 12px 42px;
    border-radius: 8px;
    font-size: 14px;
    font-family: inherit;
    outline: none;
    transition: all 0.2s;
    box-sizing: border-box;
}

.login-input:focus {
    border-color: var(--accent-cyan);
    box-shadow: 0 0 0 3px rgba(6, 182, 212, 0.1);
}

.login-input:focus + .login-field-icon,
.login-field:focus-within .login-field-icon {
    opacity: 1;
    color: var(--accent-cyan);
}

.login-input::placeholder {
    color: var(--text-muted);
}

/* 密码可见切换 */
.login-password-toggle {
    position: absolute;
    right: 14px;
    top: 50%;
    transform: translateY(-50%);
    background: transparent;
    border: none;
    color: var(--text-muted);
    cursor: pointer;
    font-size: 16px;
    padding: 4px;
    transition: color 0.2s;
}

.login-password-toggle:hover {
    color: var(--accent-cyan);
}

/* 错误提示 */
.login-error {
    background: rgba(239, 68, 68, 0.1);
    border: 1px solid rgba(239, 68, 68, 0.3);
    color: var(--accent-red);
    padding: 10px 14px;
    border-radius: 8px;
    font-size: 13px;
    display: none;
    align-items: center;
    gap: 8px;
    animation: shake 0.4s;
}

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

@keyframes shake {
    0%, 100% { transform: translateX(0); }
    25% { transform: translateX(-6px); }
    75% { transform: translateX(6px); }
}

/* 登录按钮 */
.login-btn {
    width: 100%;
    background: linear-gradient(135deg, var(--accent-cyan), var(--accent-blue));
    color: #fff;
    border: none;
    padding: 13px;
    border-radius: 8px;
    font-size: 15px;
    font-weight: bold;
    cursor: pointer;
    transition: all 0.2s;
    font-family: inherit;
    margin-top: 4px;
    position: relative;
    overflow: hidden;
}

.login-btn:hover:not(:disabled) {
    box-shadow: 0 0 20px rgba(6, 182, 212, 0.4);
    transform: translateY(-1px);
}

.login-btn:active:not(:disabled) {
    transform: translateY(0);
}

.login-btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

.login-btn-spinner {
    display: none;
    width: 18px;
    height: 18px;
    border: 2px solid rgba(255, 255, 255, 0.3);
    border-top-color: #fff;
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
    margin: 0 auto;
}

.login-btn.loading .login-btn-text {
    display: none;
}

.login-btn.loading .login-btn-spinner {
    display: block;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

/* 底部信息 */
.login-footer {
    text-align: center;
    margin-top: 24px;
    padding-top: 20px;
    border-top: 1px solid var(--border-color);
    font-size: 12px;
    color: var(--text-muted);
    line-height: 1.6;
}

.login-footer a {
    color: var(--accent-cyan);
    text-decoration: none;
    transition: opacity 0.2s;
}

.login-footer a:hover {
    opacity: 0.8;
}