/* AI Academy 訂閱系統樣式 */

/* 主容器 */
.ai-academy-subscribe-form {
    background: linear-gradient(135deg, rgba(42,157,143,0.15), rgba(231,111,81,0.08));
    border: 1px solid rgba(42,157,143,0.3);
    border-radius: 16px;
    padding: 2.5rem;
    text-align: center;
    margin: 3rem auto;
    max-width: 600px;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Oxygen-Sans, Ubuntu, Cantarell, "Helvetica Neue", sans-serif;
}

.ai-academy-subscribe-form.minimal {
    background: transparent;
    border: none;
    padding: 1rem 0;
    margin: 1rem 0;
}

.ai-academy-subscribe-form.inline {
    background: transparent;
    border: none;
    padding: 0;
    margin: 0;
    text-align: left;
}

/* 訂閱人數統計 */
.subscriber-count {
    font-size: 0.9rem;
    color: #94a3b8;
    margin-bottom: 1.5rem;
}

.subscriber-count .count {
    font-weight: 600;
    color: #2a9d8f;
}

/* 標題和描述 */
.ai-academy-subscribe-form h3 {
    font-size: 1.4rem;
    font-weight: 800;
    margin-bottom: 0.5rem;
    color: #f8fafc;
}

.ai-academy-subscribe-form p {
    color: #94a3b8;
    margin-bottom: 1.5rem;
    font-size: 0.9rem;
}

.ai-academy-subscribe-form.minimal p,
.ai-academy-subscribe-form.inline p {
    margin-bottom: 0.5rem;
}

/* 表單容器 */
.subscribe-form-container {
    position: relative;
}

/* 表單行 */
.form-row {
    display: flex;
    gap: 0.5rem;
    justify-content: center;
    flex-wrap: wrap;
}

/* 表單群組 */
.form-group {
    margin-bottom: 1rem;
}

.inline-form-group {
    margin-bottom: 0;
}

/* 標籤 */
.form-label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 600;
    color: #f8fafc;
}

/* 輸入群組 */
.input-group {
    display: flex;
    gap: 0.5rem;
    align-items: stretch;
}

/* Email 輸入框 */
.subscribe-email-input {
    padding: 0.7rem 1rem;
    border-radius: 8px;
    border: 1px solid rgba(42,157,143,0.3);
    background: rgba(255,255,255,0.05);
    color: #f8fafc;
    font-size: 0.9rem;
    flex: 1;
    max-width: 280px;
    transition: all 0.3s ease;
}

.subscribe-email-input:focus {
    outline: none;
    border-color: #2a9d8f;
    background: rgba(255,255,255,0.08);
    box-shadow: 0 0 0 3px rgba(42,157,143,0.1);
}

.subscribe-email-input::placeholder {
    color: rgba(248,250,252,0.5);
}

/* 提交按鈕 */
.subscribe-submit-button {
    padding: 0.7rem 1.5rem;
    background: #2a9d8f;
    color: #fff;
    border: none;
    border-radius: 8px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
    white-space: nowrap;
}

.subscribe-submit-button:hover {
    background: #21867a;
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(42,157,143,0.3);
}

.subscribe-submit-button:active {
    transform: translateY(0);
    box-shadow: 0 2px 6px rgba(42,157,143,0.2);
}

/* 按鈕文字 */
.button-text {
    display: inline-block;
}

/* 按鈕載入中 */
.button-loading {
    display: none;
}

.subscribe-submit-button.loading .button-text {
    display: none;
}

.subscribe-submit-button.loading .button-loading {
    display: inline-block;
}

/* 旋轉動畫 */
.spinner {
    display: inline-block;
    width: 16px;
    height: 16px;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* 反饋訊息 */
.subscribe-feedback {
    margin-top: 1rem;
    min-height: 24px;
    font-size: 0.9rem;
    text-align: center;
}

.subscribe-feedback.success {
    color: #4ade80;
}

.subscribe-feedback.error {
    color: #f87171;
}

/* 頁腳 */
.subscribe-footer {
    margin-top: 1.5rem;
    font-size: 0.8rem;
    color: rgba(248,250,252,0.6);
}

.subscribe-footer small {
    display: block;
}

/* 響應式設計 */
@media (max-width: 640px) {
    .ai-academy-subscribe-form {
        padding: 2rem 1.5rem;
        margin: 2rem 1rem;
    }
    
    .ai-academy-subscribe-form h3 {
        font-size: 1.2rem;
    }
    
    .form-row {
        flex-direction: column;
        align-items: stretch;
    }
    
    .subscribe-email-input {
        max-width: none;
    }
    
    .input-group {
        flex-direction: column;
    }
}

/* 深色模式支援 */
@media (prefers-color-scheme: dark) {
    .subscribe-email-input {
        background: rgba(0,0,0,0.2);
        border-color: rgba(42,157,143,0.5);
    }
    
    .subscribe-email-input:focus {
        background: rgba(0,0,0,0.3);
    }
}

/* 狀態樣式 */
.status-active {
    color: #4ade80;
    font-weight: 600;
}

.status-pending {
    color: #fbbf24;
    font-weight: 600;
}

.status-inactive {
    color: #94a3b8;
    font-weight: 600;
}

.status-unknown {
    color: #f87171;
    font-weight: 600;
}

/* 動畫效果 */
.ai-academy-subscribe-form {
    animation: fadeIn 0.6s ease-out;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* 焦點可訪問性 */
.subscribe-email-input:focus-visible,
.subscribe-submit-button:focus-visible {
    outline: 2px solid #2a9d8f;
    outline-offset: 2px;
}

/* 載入狀態 */
.subscribe-form-container.loading .subscribe-email-input,
.subscribe-form-container.loading .subscribe-submit-button {
    opacity: 0.7;
    pointer-events: none;
}

/* 成功狀態 */
.subscribe-form-container.success .subscribe-email-input {
    border-color: #4ade80;
}

/* 錯誤狀態 */
.subscribe-form-container.error .subscribe-email-input {
    border-color: #f87171;
}