/* ==========================================
   Contact Section
   ========================================== */

.contact-section {
    padding: 48px 24px 80px 24px;
    background-color: var(--color-sf-00);
}

.contact-container {
    max-width: 936px;
    margin: 0 auto;
}

/* ===== Section Header ===== */
.contact-header {
    margin-bottom: 32px;
}

.contact-header .section-title {
    font-size: 48px;
    font-family: 'The Bold Font', sans-serif;
    font-weight: 700;
    letter-spacing: -2%;
    text-align: left;
    margin-bottom: 8px;
    color: var(--color-obj-00);
}

.contact-header .section-subtitle {
    font-size: 16px;
    font-family: 'Pretendard', sans-serif;
    font-weight: 400;
    line-height: 1.6;
    letter-spacing: -4%;
    color: var(--color-obj);
    text-align: left;
    max-width: none;
    margin: 0;
}

/* ===== Contact Form ===== */
.contact-form {
    display: flex;
    flex-direction: column;
    gap: 24px;
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 24px;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.form-group label {
    font-size: 14px;
    font-family: 'Pretendard', sans-serif;
    font-weight: 600;
    letter-spacing: -4%;
    color: var(--color-obj);
}

.form-group label .required {
    color: var(--color-mid);
    margin-left: 4px;
}

.form-group input,
.form-group textarea {
    padding: 8px 12px;
    border: none;
    border-radius: 4px;
    background-color: var(--color-sf-01);
    color: var(--color-obj-00);
    font-family: 'Pretendard', sans-serif;
    font-size: 14px;
    font-weight: 400;
    transition: background-color var(--transition-fast);
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    background-color: var(--color-sf-03);
}

.form-group input::placeholder,
.form-group textarea::placeholder {
    color: var(--color-obj-02);
    font-family: 'Pretendard', sans-serif;
    font-weight: 400;
}

.form-group textarea {
    min-height: 66px;
    resize: vertical;
    line-height: 1.6;
}

/* Submit Button */
.submit-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    padding: 8px 12px;
    background-color: var(--color-obj-00);
    color: var(--color-sf-00);
    border: none;
    border-radius: 8px;
    font-family: 'Pretendard', sans-serif;
    font-size: 16px;
    font-weight: 500;
    letter-spacing: -4%;
    cursor: pointer;
    transition: opacity var(--transition-fast);
    align-self: flex-start;
    position: relative;
    z-index: 0;
}

.submit-btn:hover {
    /* glow effect only, no other changes */
}

.submit-btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.submit-btn svg {
    width: 24px;
    height: 24px;
}

/* Glow effect for submit button */
.submit-btn:before {
    content: '';
    background: linear-gradient(45deg, #ff0000, #ff7300, #fffb00, #48ff00, #00ffd5, #002bff, #7a00ff, #ff00c8, #ff0000);
    position: absolute;
    top: -2px;
    left: -2px;
    background-size: 400%;
    z-index: -1;
    filter: blur(5px);
    width: calc(100% + 4px);
    height: calc(100% + 4px);
    animation: glowing 20s linear infinite;
    opacity: 0;
    transition: opacity .3s ease-in-out;
    border-radius: 8px;
}

.submit-btn:hover:before {
    opacity: 1;
}

.submit-btn:disabled:before {
    opacity: 0;
}

.submit-btn:after {
    z-index: -1;
    content: '';
    position: absolute;
    width: 100%;
    height: 100%;
    background: var(--color-obj-00);
    left: 0;
    top: 0;
    border-radius: 8px;
}

/* Form States */
.form-group.error input,
.form-group.error textarea {
    border: 1px solid #ff4444;
}

.form-error {
    font-size: 12px;
    font-family: 'Pretendard', sans-serif;
    color: #ff4444;
    margin-top: 4px;
}

.form-success {
    padding: 16px;
    background-color: rgba(0, 200, 0, 0.1);
    border: 1px solid rgba(0, 200, 0, 0.3);
    border-radius: 8px;
    color: var(--color-obj-00);
    font-family: 'Pretendard', sans-serif;
    text-align: center;
    margin-top: 16px;
}

/* Loading State */
.submit-btn.loading::after {
    content: '';
    display: inline-block;
    width: 14px;
    height: 14px;
    margin-left: 8px;
    border: 2px solid var(--color-sf-00);
    border-radius: 50%;
    border-top-color: transparent;
    animation: spinner 0.6s linear infinite;
}

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

/* ===== Popup Modal ===== */
.popup-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: rgba(0, 0, 0, 0.7);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 9999;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.3s ease, visibility 0.3s ease;
}

.popup-overlay.active {
    opacity: 1;
    visibility: visible;
}

.popup-modal {
    background-color: var(--color-sf-01);
    border-radius: 12px;
    padding: 32px;
    max-width: 480px;
    width: 90%;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
    transform: translateY(-20px);
    transition: transform 0.3s ease;
}

.popup-overlay.active .popup-modal {
    transform: translateY(0);
}

.popup-header {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 16px;
}

.popup-icon {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.popup-icon.success {
    background-color: rgba(0, 200, 0, 0.2);
    color: #00c800;
}

.popup-icon.error {
    background-color: rgba(255, 68, 68, 0.2);
    color: #ff4444;
}

.popup-icon svg {
    width: 20px;
    height: 20px;
}

.popup-title {
    font-size: 24px;
    font-family: 'The Bold Font', sans-serif;
    font-weight: 700;
    color: var(--color-obj-00);
    letter-spacing: -2%;
}

.popup-content {
    font-size: 14px;
    font-family: 'Pretendard', sans-serif;
    font-weight: 400;
    line-height: 1.6;
    color: var(--color-obj);
    margin-bottom: 24px;
    white-space: pre-line;
}

.popup-actions {
    display: flex;
    justify-content: flex-end;
}

.popup-btn {
    padding: 10px 24px;
    background-color: var(--color-obj-00);
    color: var(--color-sf-00);
    border: none;
    border-radius: 8px;
    font-family: 'Pretendard', sans-serif;
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    transition: opacity 0.2s ease;
}

.popup-btn:hover {
    opacity: 0.9;
}

/* Dark Mode - CSS Variables로 자동 처리됨 */

/* Responsive */
@media (max-width: 768px) {
    .contact-section {
        padding: 32px 16px 64px 16px;
    }

    .contact-header {
        margin-bottom: 24px;
    }

    .contact-header .section-title {
        font-size: 32px;
    }

    .contact-header .section-subtitle {
        font-size: 14px;
    }

    .form-row {
        grid-template-columns: 1fr;
        gap: 24px;
    }

    .form-group textarea {
        min-height: 100px;
    }

    .submit-btn {
        width: 100%;
    }
}