.banner {
    background: url("../img/bg3.jpg") center/cover no-repeat;
}

/* 聯絡表單區域 */
.contact-section {
    padding: 80px 6vw;
}

.contact-container {
    display: grid;
    grid-template-columns: 1.2fr 1fr;
    gap: clamp(32px, 6vw, 64px);
    align-items: start;
    max-width: 1200px;
    margin: 0 auto;
}

/* 表單卡片 */
.contact-form {
    background: linear-gradient(145deg, var(--FFFFFF), var(--F5F7FB));
    border: 1px solid rgba(19, 19, 52, .2);
    border-radius: var(--radius-xl);
    padding: clamp(24px, 4vw, 40px);
    box-shadow: var(--shadow-1);
    position: relative;
    overflow: hidden;
    transition: all 0.3s ease;
}

.contact-form:hover {
    transform: translateY(-8px) scale(1.01);
    box-shadow: var(--shadow-2), 0 0 30px rgba(163, 207, 235, 0.1);
    border-color: rgba(163, 207, 235, .35);
    background: linear-gradient(180deg, rgba(255, 255, 255, .15), rgba(255, 255, 255, .10));
}

.contact-form::before {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--A3CFEB), var(--ADFFF5));
    transform: scaleX(0);
    transition: transform 0.4s ease;
}

.contact-form::after {
    content: "";
    position: absolute;
    top: -80px;
    right: -80px;
    width: 160px;
    height: 160px;
    background: radial-gradient(50% 50% at 50% 50%, var(--A3CFEB), transparent 70%);
    opacity: 0;
    transition: opacity 0.4s ease;
}

.contact-form:hover::before {
    transform: scaleX(1);
}

.contact-form:hover::after {
    opacity: 0.08;
}


.contact-form h3 {
    color: var(--131334);
    font-weight: 900;
    font-size: clamp(20px, 3vw, 24px);
    margin-bottom: 8px;
    letter-spacing: 0.02em;
}

.contact-form .subtitle {
    color: var(--A3CFEB);
    font-size: 16px;
    font-weight: 600;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    margin-bottom: 24px;
}

.contact-form p {
    color: var(--AAAAAA);
    margin-bottom: 32px;
    line-height: 1.7;
    font-size: 18px;
}

/* 表單欄位 */
.form-group {
    margin-bottom: 24px;
}

.contact-form .row {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
    margin-bottom: 24px;
}

label {
    display: block;
    font-weight: 700;
    font-size: 18px;
    margin-bottom: 8px;
    color: var(--131334);
    letter-spacing: 0.02em;
}

input, textarea {
    width: 100%;
    border: 1px solid rgba(19, 19, 52, .3);
    border-radius: 12px;
    padding: 14px 16px;
    font-size: 16px;
    color: var(--131334);
    background: var(--FFFFFF);
    outline: none;
    transition: all 0.3s ease;
    font-family: inherit;
}

input:focus, textarea:focus {
    border-color: var(--A3CFEB);
    box-shadow: 0 0 0 4px rgba(163, 207, 235, 0.15);
    background: rgba(163, 207, 235, 0.02);
}

input::placeholder, textarea::placeholder {
    color: var(--AAAAAA);
    opacity: 0.8;
}

textarea {
    resize: vertical;
    min-height: 120px;
    line-height: 1.6;
}

select {
    background: radial-gradient(100% 100% at 30% 20%, var(--ADFFF5), var(--A3CFEB));
    color: var(--0F1830);
    font-weight: 800;
    font-size: 16px;
    letter-spacing: 0.1em;
    width: 100%;
    padding: 16px 32px;
    border: none;
    border-radius: 12px;
    cursor: pointer;
    box-shadow: var(--shadow-1);
    transition: all 0.3s ease;
}

/* 提交按鈕 */
.btn-send {
    display: block;
    align-items: center;
    justify-content: center;
    gap: 8px;
    width: fit-content;
	margin: auto;
    margin-top: 24px;
    background: radial-gradient(100% 100% at 30% 20%, var(--ADFFF5), var(--A3CFEB));
    color: var(--0F1830);
    font-weight: 800;
    font-size: 16px;
    letter-spacing: 0.1em;
    padding: 16px 32px;
    border: none;
    border-radius: 12px;
    cursor: pointer;
    box-shadow: var(--shadow-1);
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.btn-send::after {
    content: "→";
    transition: transform 0.3s ease;
}

.btn-send:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-2);
}

.btn-send:hover::after {
    transform: translateX(4px);
}

.btn-send:active {
    transform: translateY(-1px);
}

/* 聯絡資訊卡片 */
.contact-info {
    background: linear-gradient(145deg, var(--FFFFFF), var(--F5F7FB));
    border: 1px solid rgba(19, 19, 52, .08);
    border-radius: var(--radius-xl);
    padding: clamp(24px, 4vw, 32px);
    box-shadow: var(--shadow-1);
    position: relative;
    overflow: hidden;
    transition: all 0.3s ease;
    height: fit-content;
    position: sticky;
    top: 20px;
}

.contact-info::before {
    content: "";
    position: absolute;
    top: -60px;
    left: -60px;
    width: 120px;
    height: 120px;
    background: radial-gradient(50% 50% at 50% 50%, var(--ADFFF5), transparent 70%);
    opacity: 0.1;
    filter: blur(30px);
}

.contact-info:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-2);
}

.contact-info h3 {
    color: var(--131334);
    font-weight: 900;
    font-size: clamp(18px, 2.5vw, 20px);
    margin-bottom: 24px;
    letter-spacing: 0.02em;
}

.info-item {
    display: flex;
    align-items: flex-start;
    gap: 16px;
    margin-bottom: 24px;
    padding: 16px;
    border-radius: 12px;
    background: rgba(163, 207, 235, 0.05);
    border: 1px solid rgba(163, 207, 235, 0.1);
    transition: all 0.3s ease;
}

.info-item:hover {
    background: rgba(163, 207, 235, 0.1);
    border-color: rgba(163, 207, 235, 0.2);
    transform: translateX(4px);
}

.info-item:last-child {
    margin-bottom: 0;
}

.info-icon {
    width: 40px;
    height: 40px;
    border-radius: 10px;
    background: radial-gradient(100% 100% at 30% 20%, var(--ADFFF5), var(--A3CFEB));
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--0F1830);
    font-size: 18px;
    flex-shrink: 0;
    border: 1px solid rgba(255, 255, 255, .6);
}

.info-content {
    flex: 1;
}

.info-label {
    font-weight: 700;
    font-size: 14px;
    color: var(--131334);
    margin-bottom: 4px;
    letter-spacing: 0.02em;
}

.info-value {
    color: var(--AAAAAA);
    font-size: 15px;
    line-height: 1.5;
    margin: 0;
}

.info-value a {
    color: var(--A3CFEB);
    text-decoration: none;
    transition: color 0.3s ease;
}

.info-value a:hover {
    color: var(--131334);
}

/* 表單驗證狀態 */
.form-group.error input,
.form-group.error textarea {
    border-color: #e74c3c;
    box-shadow: 0 0 0 4px rgba(231, 76, 60, 0.15);
}

.form-group.success input,
.form-group.success textarea {
    border-color: #27ae60;
    box-shadow: 0 0 0 4px rgba(39, 174, 96, 0.15);
}

.error-message {
    color: #e74c3c;
    font-size: 13px;
    margin-top: 6px;
    display: none;
}

.form-group.error .error-message {
    display: block;
}

/* 載入狀態 */
.btn-send.loading {
    pointer-events: none;
    opacity: 0.7;
}

.btn-send.loading::after {
    content: "";
    width: 16px;
    height: 16px;
    border: 2px solid var(--0F1830);
    border-top: 2px solid transparent;
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

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

/* RWD 響應式設計 */
@media (max-width: 1024px) {
    .contact-container {
        grid-template-columns: 1fr;
        gap: 40px;
    }
    
    .contact-info {
        position: static;
    }
}

@media (max-width: 768px) {
    .contact-section {
        padding: 60px 6vw;
    }
    
    .contact-form .row {
        grid-template-columns: 1fr;
        gap: 16px;
        margin-bottom: 20px;
    }
    
    .contact-form,
    .contact-info {
        padding: 24px 20px;
    }
    
    .form-group {
        margin-bottom: 20px;
    }
    
    input, textarea {
        padding: 12px 14px;
    }
    
    .btn-send {
        padding: 14px 24px;
        font-size: 15px;
    }
    
    .info-item {
        padding: 12px;
        gap: 12px;
    }
    
    .info-icon {
        width: 36px;
        height: 36px;
        font-size: 16px;
    }
}

@media (max-width: 480px) {
    .contact-form,
    .contact-info {
        padding: 20px 18px;
        border-radius: 20px;
    }
    
    .contact-form h3 {
        font-size: 18px;
    }
    
    .contact-form p {
        font-size: 15px;
        margin-bottom: 24px;
    }
    
    input, textarea {
        padding: 10px 12px;
        font-size: 14px;
        border-radius: 10px;
    }
    
    .btn-send {
        padding: 12px 20px;
        font-size: 14px;
        border-radius: 10px;
    }
    
    .info-item {
        flex-direction: column;
        text-align: center;
        gap: 8px;
        padding: 16px 12px;
    }
    
    .info-icon {
        align-self: center;
    }
}

@media (max-width: 320px) {
    .contact-form,
    .contact-info {
        padding: 18px 16px;
    }
    
    .btn-send {
        padding: 10px 18px;
        font-size: 13px;
    }
}