/* ============================================
   AIOM UI 组件美化增强版
   主题：活力橙 (Orange) #F97316
   ============================================ */

/* ============================================
   🎨 增强按钮系统
   ============================================ */

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.75rem 1.5rem;
    font-size: 0.9375rem;
    font-weight: 600;
    border-radius: 10px;
    border: none;
    cursor: pointer;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    overflow: hidden;
    letter-spacing: 0.01em;
}

.btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(
        90deg,
        transparent,
        rgba(255, 255, 255, 0.2),
        transparent
    );
    transition: left 0.5s;
}

.btn:hover:not(:disabled)::before {
    left: 100%;
}

/* 主按钮 - 渐变橙色 */
.btn-primary {
    background: linear-gradient(135deg, #F97316 0%, #FB923C 100%);
    color: white;
    box-shadow: 0 4px 14px rgba(249, 115, 22, 0.35);
    border: none;
}

.btn-primary:hover:not(:disabled) {
    background: linear-gradient(135deg, #EA580C 0%, #F97316 100%);
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(249, 115, 22, 0.45);
}

.btn-primary:active:not(:disabled) {
    transform: translateY(0);
    box-shadow: 0 2px 8px rgba(249, 115, 22, 0.3);
}

/* 次要按钮 */
.btn-secondary {
    background: white;
    color: var(--gray-700);
    border: 2px solid var(--gray-200);
    box-shadow: 0 2px 6px rgba(0, 0, 0, 0.04);
}

.btn-secondary:hover:not(:disabled) {
    border-color: var(--primary);
    color: var(--primary);
    background: var(--primary-light);
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(249, 115, 22, 0.15);
}

/* 全宽按钮 */
.btn-block {
    width: 100%;
    padding: 0.875rem 1.5rem;
    font-size: 1rem;
    border-radius: 12px;
}

/* 小按钮 */
.btn-sm {
    padding: 0.5rem 1rem;
    font-size: 0.8125rem;
    border-radius: 8px;
}

/* 禁用状态 */
.btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
    transform: none !important;
    box-shadow: none !important;
}

/* ============================================
   📝 增强输入框系统
   ============================================ */

.form-group {
    margin-bottom: 1.25rem;
}

.form-label {
    display: block;
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--gray-800);
    margin-bottom: 0.5rem;
    letter-spacing: 0.02em;
}

.form-input {
    width: 100%;
    padding: 0.875rem 1rem;
    border: 2px solid var(--gray-200);
    border-radius: 10px;
    font-size: 0.9375rem;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    background: var(--white);
    color: var(--gray-900);
}

.form-input:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 4px rgba(249, 115, 22, 0.12), 0 2px 8px rgba(0, 0, 0, 0.04);
    background: white;
}

.form-input::placeholder {
    color: var(--gray-400);
    font-weight: 400;
}

/* 输入框悬停效果 */
.form-input:hover:not(:focus) {
    border-color: var(--gray-300);
    background: var(--gray-50);
}

/* 错误状态 */
.form-input.error {
    border-color: var(--danger);
    animation: shake 0.3s ease-in-out;
}

@keyframes shake {
    0%, 100% { transform: translateX(0); }
    25% { transform: translateX(-5px); }
    75% { transform: translateX(5px); }
}

/* 成功状态 */
.form-input.success {
    border-color: var(--success);
}

/* 表单提示文字 */
.form-hint {
    font-size: 0.8125rem;
    color: var(--gray-500);
    margin-top: 0.375rem;
    line-height: 1.4;
}

.form-hint b {
    color: var(--primary);
    font-weight: 600;
}

/* ============================================
   🔄 切换按钮（注册方式切换）
   ============================================ */

.reg-toggle {
    display: flex;
    gap: 0;
    margin-bottom: 1.75rem;
    background: var(--gray-100);
    padding: 4px;
    border-radius: 12px;
    border: none;
}

.reg-toggle-btn {
    flex: 1;
    text-align: center;
    padding: 0.75rem 1rem;
    background: transparent;
    border: none;
    cursor: pointer;
    font-size: 0.9375rem;
    font-weight: 600;
    color: var(--gray-500);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    border-radius: 8px;
    position: relative;
}

.reg-toggle-btn:hover:not(.active) {
    color: var(--gray-700);
    background: rgba(255, 255, 255, 0.5);
}

.reg-toggle-btn.active {
    background: white;
    color: var(--primary);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08), 0 1px 2px rgba(0, 0, 0, 0.04);
    transform: translateY(-1px);
}

.reg-toggle:first-child .reg-toggle-btn {
    border-radius: 8px 0 0 8px;
}

.reg-toggle:last-child .reg-toggle-btn {
    border-radius: 0 8px 8px 0;
}

/* ============================================
   ✅ 复选框优化
   ============================================ */

.form-check {
    display: flex;
    align-items: center;
    gap: 0.625rem;
    margin: 1.25rem 0;
    cursor: pointer;
}

.form-check input[type="checkbox"] {
    width: 1.125rem;
    height: 1.125rem;
    margin-top: 0;
    accent-color: var(--primary);
    cursor: pointer;
    transition: all 0.2s;
}

.form-check input[type="checkbox"]:hover {
    transform: scale(1.05);
}

.form-check label {
    font-size: 0.875rem;
    color: var(--gray-600);
    cursor: pointer;
    user-select: none;
}

.form-check a {
    color: var(--primary);
    text-decoration: none;
    font-weight: 500;
    transition: color 0.2s;
}

.form-check a:hover {
    color: var(--primary-dark);
    text-decoration: underline;
}

/* ============================================
   📦 卡片容器增强
   ============================================ */

.auth-box {
    width: 100%;
    max-width: 420px;
    background: white;
    border-radius: 20px;
    padding: 2.5rem;
    box-shadow: 
        0 4px 6px -1px rgba(0, 0, 0, 0.05),
        0 10px 15px -3px rgba(0, 0, 0, 0.03),
        0 0 0 1px rgba(0, 0, 0, 0.02);
    backdrop-filter: blur(10px);
    transition: all 0.3s ease;
}

.auth-box:hover {
    box-shadow: 
        0 8px 12px -2px rgba(0, 0, 0, 0.06),
        0 20px 25px -5px rgba(0, 0, 0, 0.04),
        0 0 0 1px rgba(0, 0, 0, 0.03);
}

/* 设置卡片 */
.settings-card {
    background: white;
    border-radius: 16px;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.04), 0 1px 2px rgba(0, 0, 0, 0.02);
    margin-bottom: 1rem;
    overflow: hidden;
    border: 1px solid rgba(0, 0, 0, 0.04);
    transition: all 0.3s ease;
}

.settings-card:hover {
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.06), 0 2px 4px rgba(0, 0, 0, 0.03);
    transform: translateY(-1px);
}

.settings-card-title {
    padding: 1.25rem 1.5rem;
    font-size: 0.9375rem;
    font-weight: 700;
    color: var(--gray-900);
    border-bottom: 1px solid var(--gray-100);
    background: linear-gradient(to bottom, var(--gray-50), white);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.settings-item {
    padding: 1rem 1.5rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-bottom: 1px solid var(--gray-50);
    transition: all 0.2s ease;
}

.settings-item:last-child {
    border-bottom: none;
}

.settings-item:hover {
    background: var(--gray-50);
    padding-left: 1.75rem;
}

.settings-label {
    font-size: 0.9375rem;
    color: var(--gray-800);
    font-weight: 500;
}

.settings-label small {
    display: block;
    font-size: 0.8125rem;
    color: var(--gray-400);
    margin-top: 0.25rem;
    font-weight: 400;
}

.settings-value {
    font-size: 0.875rem;
    color: var(--gray-500);
    font-weight: 500;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

/* ============================================
   📝 编辑表单（修改密码等）
   ============================================ */

.edit-form {
    display: none;
    padding: 1.5rem;
    background: linear-gradient(135deg, #FFF7ED 0%, #FFEDD5 100%);
    border-top: 2px solid var(--primary);
    animation: slideDown 0.3s ease-out;
}

.edit-form.show {
    display: block;
}

@keyframes slideDown {
    from {
        opacity: 0;
        transform: translateY(-10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.edit-input {
    width: 100%;
    padding: 0.75rem 1rem;
    border: 2px solid var(--gray-200);
    border-radius: 8px;
    font-size: 0.9375rem;
    outline: none;
    transition: all 0.2s;
    margin-bottom: 0.75rem;
    background: white;
}

.edit-input:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(249, 115, 22, 0.1);
}

.edit-actions {
    display: flex;
    gap: 0.75rem;
    margin-top: 1rem;
}

.edit-save {
    padding: 0.625rem 1.5rem;
    border-radius: 8px;
    border: none;
    background: linear-gradient(135deg, #F97316, #FB923C);
    color: white;
    font-size: 0.875rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s;
    box-shadow: 0 2px 8px rgba(249, 115, 22, 0.25);
}

.edit-save:hover {
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(249, 115, 22, 0.35);
}

.edit-cancel {
    padding: 0.625rem 1.5rem;
    border-radius: 8px;
    border: 2px solid var(--gray-300);
    background: white;
    color: var(--gray-600);
    font-size: 0.875rem;
    cursor: pointer;
    transition: all 0.2s;
    font-weight: 500;
}

.edit-cancel:hover {
    border-color: var(--gray-400);
    background: var(--gray-50);
}

/* ============================================
   ⚠️ 危险区域
   ============================================ */

.danger-zone {
    margin-top: 2rem;
}

.danger-card {
    background: white;
    border-radius: 16px;
    border: 2px solid #FEE2E2;
    padding: 1.5rem;
    box-shadow: 0 2px 8px rgba(239, 68, 68, 0.06);
}

.danger-title {
    font-size: 0.9375rem;
    font-weight: 700;
    color: #DC2626;
    margin-bottom: 0.5rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.danger-desc {
    font-size: 0.8125rem;
    color: var(--gray-500);
    margin-bottom: 1rem;
    line-height: 1.5;
}

.danger-btn {
    padding: 0.625rem 1.25rem;
    border-radius: 8px;
    border: 2px solid #DC2626;
    background: white;
    color: #DC2626;
    font-size: 0.875rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s;
}

.danger-btn:hover {
    background: #DC2626;
    color: white;
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(220, 38, 38, 0.25);
}

/* ============================================
   🔘 徽章和标签
   ============================================ */

.tier-tag {
    padding: 0.25rem 0.75rem;
    border-radius: 20px;
    font-size: 0.75rem;
    font-weight: 700;
    letter-spacing: 0.02em;
}

.tier-tag.vip {
    background: linear-gradient(135deg, #FFF7ED, #FFEDD5);
    color: #F97316;
    border: 1px solid rgba(249, 115, 22, 0.2);
}

.tier-tag.popular {
    background: linear-gradient(135deg, #EEF2FF, #E0E7FF);
    color: #667eea;
    border: 1px solid rgba(102, 126, 234, 0.2);
}

.tier-tag.starter {
    background: linear-gradient(135deg, #ECFDF5, #D1FAE5);
    color: #10B981;
    border: 1px solid rgba(16, 185, 129, 0.2);
}

.tier-tag.guest {
    background: var(--gray-100);
    color: var(--gray-500);
    border: 1px solid var(--gray-200);
}

/* 充值按钮 */
.recharge-btn {
    padding: 0.375rem 0.875rem;
    border-radius: 20px;
    border: none;
    background: linear-gradient(135deg, #667eea, #764ba2);
    color: white;
    font-size: 0.75rem;
    font-weight: 700;
    cursor: pointer;
    transition: all 0.2s;
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    gap: 0.25rem;
    letter-spacing: 0.02em;
}

.recharge-btn:hover {
    transform: scale(1.05);
    box-shadow: 0 4px 12px rgba(102, 126, 234, 0.35);
}

/* ============================================
   📱 响应式优化
   ============================================ */

@media (max-width: 768px) {
    .auth-box {
        padding: 1.75rem;
        border-radius: 16px;
        margin: 1rem;
    }

    .btn-block {
        padding: 0.875rem 1.25rem;
    }

    .form-input {
        padding: 0.75rem 0.875rem;
    }

    .settings-card {
        border-radius: 12px;
    }

    .settings-item {
        padding: 0.875rem 1.25rem;
    }
}

/* ============================================
   ✨ 微交互细节
   ============================================ */

/* Logo悬停效果 */
.logo:hover .logo-icon {
    transform: rotate(360deg) scale(1.1);
    transition: transform 0.5s ease;
}

.logo-icon {
    transition: transform 0.3s ease;
}

/* 用户头像悬停 */
.user-avatar:hover {
    transform: scale(1.1) rotate(5deg);
    transition: transform 0.3s ease;
}

/* 链接下划线动画 */
.nav-links a {
    position: relative;
    text-decoration: none;
}

.nav-links a::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--primary);
    transition: width 0.3s ease;
}

.nav-links a:hover::after {
    width: 100%;
}

/* 页面标题渐变文字 */
.auth-title h1 {
    background: linear-gradient(135deg, var(--gray-900) 0%, var(--gray-700) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}