/* カスタムスタイル */
body {
    font-family: 'Noto Sans JP', sans-serif;
}

.hero-gradient {
    background: linear-gradient(rgba(15, 23, 42, 0.85), rgba(15, 23, 42, 0.85)),
                url('../images/hero-background.jpg');
    background-size: cover;
    background-position: center;
}

.chat-bubble-user {
    border-radius: 20px 20px 4px 20px;
}

.chat-bubble-ai {
    border-radius: 20px 20px 20px 4px;
}

/* 画像の高さを固定してデザイン崩れを防止 */
.card-image-box {
    width: 100%;
    height: 200px;
    overflow: hidden;
    border-radius: 12px;
}

.card-image-box img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

/* スムーススクロール */
html {
    scroll-behavior: smooth;
}

/* Window Frame Styles */
.window-modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.75);
    backdrop-filter: blur(4px);
    display: none;
    align-items: center;
    justify-content: center;
    z-index: 9999;
    padding: 1rem;
}

.window-modal-overlay.active {
    display: flex;
}

.window-frame {
    background: rgba(15, 23, 42, 0.8); /* slate-900/80 */
    padding: 0.75rem;
    border-radius: 1rem;
    border: 1px solid rgba(51, 65, 85, 0.7); /* slate-700 */
    box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.5);
    backdrop-filter: blur(12px);
    max-width: 1200px;
    width: 100%;
    margin: 0 auto;
}

.window-header {
    margin-bottom: 0.75rem;
}

.window-controls {
    display: flex;
    gap: 0.5rem;
}

.window-control {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    cursor: pointer;
    transition: opacity 0.2s;
}

.window-control:hover {
    opacity: 0.8;
}

.window-control-close {
    background-color: #ef4444; /* red-500 */
}

.window-control-minimize {
    background-color: #eab308; /* yellow-500 */
}

.window-control-maximize {
    background-color: #22c55e; /* green-500 */
}

.window-content {
    position: relative;
    width: 100%;
    padding-top: 56.25%; /* 16:9 aspect ratio */
    background: #1e293b; /* slate-800 */
    border-radius: 0.5rem;
    overflow: hidden;
}

.window-video {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: contain;
    display: block;
    backface-visibility: hidden;
    transform: translateZ(0);
}

/* Fade-up animation */
.ui-mockup-container {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.6s ease-out, transform 0.6s ease-out;
}

.ui-mockup-container.visible {
    opacity: 1;
    transform: translateY(0);
}

.fade-up {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.6s ease-out, transform 0.6s ease-out;
}

.fade-up.visible {
    opacity: 1;
    transform: translateY(0);
}

/* お問い合わせフォーム */
.contact-form-section {
    padding: 4rem 1rem;
    background: linear-gradient(to bottom, #f8fafc, #ffffff);
}

.contact-form-wrapper {
    max-width: 800px;
    margin: 0 auto;
}

.contact-form-header {
    text-align: center;
    margin-bottom: 3rem;
}

.contact-form-header h2 {
    font-size: 2rem;
    font-weight: bold;
    color: #1e293b;
    margin-bottom: 1rem;
}

.contact-form-header p {
    color: #64748b;
    font-size: 1rem;
}

.contact-form-container {
    background: white;
    border-radius: 1rem;
    padding: 2.5rem;
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    border: 1px solid #e2e8f0;
}

.form-section-title {
    font-size: 1.25rem;
    font-weight: bold;
    color: #1e293b;
    margin-top: 2rem;
    margin-bottom: 1.5rem;
    padding-bottom: 0.75rem;
    border-bottom: 2px solid #3b82f6;
}

.form-section-title:first-child {
    margin-top: 0;
}

.form-group {
    margin-bottom: 1.5rem;
}

.form-group label {
    display: block;
    font-weight: 600;
    color: #334155;
    margin-bottom: 0.5rem;
    font-size: 0.95rem;
}

.required {
    color: #ef4444;
    margin-left: 0.25rem;
}

.form-group input[type="text"],
.form-group input[type="email"],
.form-group input[type="tel"],
.form-group select {
    width: 100%;
    padding: 0.75rem 1rem;
    border: 1px solid #cbd5e1;
    border-radius: 0.5rem;
    font-size: 1rem;
    transition: border-color 0.2s, box-shadow 0.2s;
    background: white;
    color: #1e293b;
}

.form-group input[type="text"]:focus,
.form-group input[type="email"]:focus,
.form-group input[type="tel"]:focus,
.form-group select:focus {
    outline: none;
    border-color: #3b82f6;
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
}

.form-group input::placeholder {
    color: #94a3b8;
}

.form-group select {
    cursor: pointer;
}

.radio-group {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.radio-option {
    display: flex;
    align-items: center;
    padding: 0.75rem 1rem;
    border: 1px solid #cbd5e1;
    border-radius: 0.5rem;
    cursor: pointer;
    transition: all 0.2s;
    background: white;
}

.radio-option:hover {
    border-color: #3b82f6;
    background: #eff6ff;
}

.radio-option input[type="radio"] {
    margin-right: 0.75rem;
    width: 1.25rem;
    height: 1.25rem;
    cursor: pointer;
    accent-color: #3b82f6;
}

.radio-option input[type="radio"]:checked + span {
    color: #3b82f6;
    font-weight: 600;
}

.radio-option span {
    color: #334155;
    font-size: 0.95rem;
}

.form-submit {
    margin-top: 2.5rem;
    text-align: center;
}

.btn {
    padding: 1rem 2.5rem;
    border-radius: 0.5rem;
    font-size: 1.1rem;
    font-weight: bold;
    cursor: pointer;
    transition: all 0.2s;
    border: none;
    display: inline-block;
}

.btn-primary {
    background: #3b82f6;
    color: white;
}

.btn-primary:hover {
    background: #2563eb;
    transform: translateY(-2px);
    box-shadow: 0 10px 15px -3px rgba(59, 130, 246, 0.3);
}

.btn-secondary {
    background: #64748b;
    color: white;
    margin-top: 1rem;
}

.btn-secondary:hover {
    background: #475569;
}

.success-message {
    text-align: center;
    padding: 3rem 2rem;
    background: white;
    border-radius: 1rem;
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
}

.success-message.hidden {
    display: none;
}

.success-icon {
    width: 64px;
    height: 64px;
    margin: 0 auto 1.5rem;
    background: #10b981;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
}

.success-message h3 {
    font-size: 1.5rem;
    font-weight: bold;
    color: #1e293b;
    margin-bottom: 1rem;
}

.success-message p {
    color: #64748b;
    margin-bottom: 1.5rem;
    line-height: 1.6;
}

.fade-in-up {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.6s ease-out, transform 0.6s ease-out;
}

.fade-in-up.visible {
    margin: 0 auto;
    opacity: 1;
    transform: translateY(0);
}

/* フォームバリデーション */
.form-group input:invalid:not(:placeholder-shown),
.form-group select:invalid:not(:placeholder-shown) {
    border-color: #ef4444;
}

.form-group input:valid:not(:placeholder-shown),
.form-group select:valid:not(:placeholder-shown) {
    border-color: #10b981;
}

@media (max-width: 768px) {
    .contact-form-container {
        padding: 1.5rem;
    }
    
    .contact-form-header h2 {
        font-size: 1.5rem;
    }
    
    .form-section-title {
        font-size: 1.1rem;
    }
}