/* ================================
   Global Variables & Reset
   ================================ */
:root {
    --primary-color: #000000;
    --secondary-color: #ffffff;
    --accent-color: #333333;
    --dark-color: #1a1a1a;
    --light-color: #f8f8f8;
    --gradient: linear-gradient(135deg, #000000 0%, #333333 100%);
    --gradient-light: linear-gradient(135deg, #f8f8f8 0%, #ffffff 100%);
    --text-shadow: 0 2px 4px rgba(0,0,0,0.1);
    --box-shadow: 0 10px 30px rgba(0,0,0,0.08);
    --border-radius: 12px;
}

* {
    box-sizing: border-box;
}

body {
    font-family: 'Inter', 'Noto Sans JP', sans-serif;
    line-height: 1.6;
    color: var(--dark-color);
    overflow-x: hidden;
    background-color: #ffffff;
}

/* ================================
   Campaign Banner
   ================================ */
.campaign-banner {
    background: linear-gradient(90deg, #f8f9fa 0%, #e9ecef 100%);
    border-bottom: 1px solid #dee2e6;
    font-size: 0.95rem;
    font-family: 'Noto Sans JP', sans-serif;
}

.campaign-content {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 1rem;
    flex-wrap: wrap;
}

.campaign-badge {
    background: #dc3545;
    color: white;
    padding: 0.25rem 0.75rem;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.campaign-text {
    color: #495057;
}

.campaign-text strong {
    color: #dc3545;
    font-size: 1.2rem;
    font-weight: 700;
}

.campaign-text small {
    font-size: 0.85rem;
    text-decoration: line-through;
    margin-left: 0.25rem;
}

.campaign-date {
    color: #6c757d;
    font-size: 0.9rem;
    padding: 0.25rem 0.75rem;
    background: rgba(0,0,0,0.05);
    border-radius: 20px;
}

/* ================================
   Logo Styles (minisic)
   ================================ */
.logo {
    display: flex;
    align-items: center;
    text-decoration: none !important;
    font-family: 'Pacifico', cursive;
    font-weight: normal;
    font-size: 1.8rem;
    color: white !important;
}

.logo-icon {
    font-size: 2.4rem;
    margin-right: 0.4rem;
    color: #ffffff;
    text-shadow: none;
    animation: musicNoteFloat 3s ease-in-out infinite;
    font-weight: normal;
    line-height: 1;
}

.logo-text {
    letter-spacing: 0px;
    color: #ffffff;
    text-shadow: none;
    font-weight: normal;
    font-size: 1.6rem;
    text-transform: none;
}

.footer-logo {
    display: flex;
    align-items: center;
    font-family: 'Pacifico', cursive;
    font-weight: normal;
    font-size: 1.5rem;
    margin-bottom: 1rem;
}

.footer-logo .logo-icon {
    font-size: 1.8rem;
    margin-right: 0.4rem;
}

.footer-logo .logo-text {
    font-weight: normal;
    letter-spacing: 0px;
    text-transform: none;
    font-size: 1.3rem;
}

@keyframes musicNoteFloat {
    0%, 100% { transform: translateY(0px) rotate(0deg); }
    50% { transform: translateY(-3px) rotate(2deg); }
}

/* ================================
   Navigation
   ================================ */
.navbar {
    background: rgba(0, 0, 0, 0.95) !important;
    backdrop-filter: blur(10px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    transition: all 0.3s ease;
}

.navbar-scrolled {
    background: rgba(0, 0, 0, 1) !important;
    box-shadow: var(--box-shadow);
}

.navbar-nav .nav-link {
    font-weight: 500;
    color: rgba(255, 255, 255, 0.9) !important;
    margin: 0 0.5rem;
    position: relative;
    transition: all 0.3s ease;
}

.navbar-nav .nav-link:hover {
    color: #cccccc !important;
}

.navbar-nav .nav-link::after {
    content: '';
    position: absolute;
    width: 0;
    height: 2px;
    bottom: -5px;
    left: 50%;
    background: #ffffff;
    transition: all 0.3s ease;
    transform: translateX(-50%);
}

.navbar-nav .nav-link:hover::after {
    width: 100%;
}

/* ================================
   Hero Section
   ================================ */
.hero-section {
    height: 100vh;
    background: var(--gradient);
    position: relative;
    display: flex;
    align-items: center;
    overflow: hidden;
}

.hero-section::before {
    content: '';
    position: absolute;
    top: 50%;
    right: 10%;
    width: 250px;
    height: 450px;
    background: rgba(255, 255, 255, 0.1);
    border: 2px solid rgba(255, 255, 255, 0.2);
    border-radius: 25px;
    transform: translateY(-50%) rotate(-5deg);
    box-shadow: 0 20px 60px rgba(0,0,0,0.3);
    backdrop-filter: blur(10px);
    animation: phoneFloat 4s ease-in-out infinite;
}

.hero-section::after {
    content: '';
    position: absolute;
    top: 50%;
    right: 15%;
    width: 200px;
    height: 350px;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 20px;
    transform: translateY(-50%) rotate(8deg);
    box-shadow: 0 15px 40px rgba(0,0,0,0.2);
    backdrop-filter: blur(5px);
    animation: phoneFloat2 5s ease-in-out infinite;
}

/* Hero Phone Animation */
@keyframes phoneFloat {
    0%, 100% { transform: translateY(-50%) rotate(-5deg) translateY(0px); }
    50% { transform: translateY(-50%) rotate(-5deg) translateY(-10px); }
}

@keyframes phoneFloat2 {
    0%, 100% { transform: translateY(-50%) rotate(8deg) translateY(0px); }
    50% { transform: translateY(-50%) rotate(8deg) translateY(15px); }
}

.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.3);
}

.hero-section h1 {
    font-size: 3.5rem;
    font-weight: 700;
    text-shadow: var(--text-shadow);
    margin-bottom: 2rem;
}

.hero-section .lead {
    font-size: 1.3rem;
    font-weight: 400;
    text-shadow: var(--text-shadow);
    opacity: 0.95;
}

.hero-buttons .btn {
    padding: 1rem 2rem;
    font-weight: 600;
    border-radius: 50px;
    box-shadow: var(--box-shadow);
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
    background: rgba(255, 255, 255, 0.1);
    border: 2px solid rgba(255, 255, 255, 0.3);
    color: white !important;
    backdrop-filter: blur(10px);
}

.hero-buttons .btn:hover {
    background: rgba(255, 255, 255, 0.2);
    border-color: rgba(255, 255, 255, 0.5);
    color: white !important;
}

.hero-buttons .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;
}

.hero-buttons .btn:hover::before {
    left: 100%;
}

/* ================================
   Problem Cards
   ================================ */
.problem-card {
    padding: 2rem;
    background: white;
    border-radius: 15px;
    box-shadow: var(--box-shadow);
    transition: all 0.3s ease;
    height: 100%;
    position: relative;
}

.problem-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 20px 40px rgba(0,0,0,0.15);
}

.listener-card {
    border-left: 4px solid #000000;
    background: linear-gradient(135deg, #f8f8f8 0%, #ffffff 100%);
    box-shadow: 0 4px 20px rgba(0,0,0,0.1);
}

.listener-card:hover {
    border-left-color: #333333;
    transform: translateY(-8px);
}

.creator-card {
    border-left: 4px solid #333333;
    background: linear-gradient(135deg, #f5f5f5 0%, #ffffff 100%);
    box-shadow: 0 4px 20px rgba(0,0,0,0.1);
}

.creator-card:hover {
    border-left-color: #000000;
    transform: translateY(-8px);
}

.text-purple {
    color: #6c5ce7 !important;
}

/* ================================
   Features Section
   ================================ */
.feature-item {
    display: flex;
    align-items: flex-start;
    padding: 2rem;
    background: white;
    border-radius: 15px;
    box-shadow: var(--box-shadow);
    transition: all 0.3s ease;
    height: 100%;
}

.feature-item:hover {
    transform: translateY(-3px);
    box-shadow: 0 15px 35px rgba(0,0,0,0.1);
}

.feature-icon {
    width: 70px;
    height: 70px;
    background: var(--gradient);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-right: 1.5rem;
    flex-shrink: 0;
}

.feature-icon i {
    font-size: 1.8rem;
    color: white;
}

.feature-content h4 {
    color: var(--dark-color);
    margin-bottom: 1rem;
    font-weight: 600;
}

.feature-content p {
    color: #636e72;
    margin-bottom: 0;
}

.listener-feature {
    border-left: 4px solid #000000;
    background: linear-gradient(135deg, #f8f8f8 0%, #ffffff 100%);
    box-shadow: 0 4px 20px rgba(0,0,0,0.08);
}

.creator-feature {
    border-left: 4px solid #333333;
    background: linear-gradient(135deg, #f5f5f5 0%, #ffffff 100%);
    box-shadow: 0 4px 20px rgba(0,0,0,0.08);
}

/* ================================
   Creator Section
   ================================ */
#creators {
    background: var(--gradient) !important;
    position: relative;
    overflow: hidden;
}

#creators::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -20%;
    width: 300px;
    height: 300px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 50%;
    animation: float 6s ease-in-out infinite;
}

#creators::after {
    content: '';
    position: absolute;
    bottom: -30%;
    left: -10%;
    width: 200px;
    height: 200px;
    background: rgba(255, 255, 255, 0.05);
    border-radius: 50%;
    animation: float 8s ease-in-out infinite reverse;
}

@keyframes float {
    0%, 100% { transform: translateY(0px); }
    50% { transform: translateY(-20px); }
}

.creator-image {
    text-align: center;
    opacity: 0.3;
}

.listener-image {
    text-align: center;
    opacity: 0.3;
}

/* ================================
   Pricing Section
   ================================ */
.pricing-card {
    background: white;
    border-radius: 15px;
    box-shadow: var(--box-shadow);
    overflow: hidden;
    transition: all 0.3s ease;
    height: 100%;
}

.pricing-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 20px 40px rgba(0,0,0,0.15);
}

.pricing-card.featured {
    transform: scale(1.05);
    border: 3px solid var(--primary-color);
}

.pricing-card.featured:hover {
    transform: scale(1.08) translateY(-5px);
}

.pricing-header {
    padding: 2rem;
    text-align: center;
}

.pricing-header h4 {
    margin-bottom: 1rem;
    font-weight: 600;
}

.price {
    font-size: 2.5rem;
    font-weight: 700;
}

.currency {
    font-size: 1.5rem;
    vertical-align: top;
}

.period {
    font-size: 1rem;
    opacity: 0.7;
}

.pricing-body {
    padding: 2rem;
}

.pricing-body ul li {
    padding: 0.5rem 0;
    border-bottom: 1px solid #f8f9fa;
}

.pricing-body ul li:last-child {
    border-bottom: none;
}

/* ================================
   Contact Form
   ================================ */
.contact-form {
    background: white;
    padding: 3rem;
    border-radius: 15px;
    box-shadow: var(--box-shadow);
}

.form-control {
    border: 2px solid #e9ecef;
    border-radius: 10px;
    padding: 0.75rem 1rem;
    transition: all 0.3s ease;
}

.form-control:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 0.2rem rgba(108, 92, 231, 0.25);
}

/* ================================
   Responsive Design
   ================================ */
@media (max-width: 992px) {
    /* タブレット以下で小さいスマホオブジェクト（::after）のみ非表示 */
    .hero-section::after {
        display: none;
    }
    
    /* 大きいガラス風オブジェクト（::before）はサイズ調整して表示継続 */
    .hero-section::before {
        width: 200px;
        height: 350px;
        right: 5%;
    }
}

@media (max-width: 768px) {
    .hero-section h1 {
        font-size: 2.5rem;
    }
    
    .hero-section .lead {
        font-size: 1.1rem;
    }
    
    .logo {
        font-size: 1.5rem;
    }
    
    .logo-icon {
        font-size: 1.8rem;
    }
    
    .feature-item {
        flex-direction: column;
        text-align: center;
    }
    
    .feature-icon {
        margin-right: 0;
        margin-bottom: 1rem;
    }
    
    .pricing-card.featured {
        transform: none;
        margin-bottom: 2rem;
    }
    
    .contact-form {
        padding: 2rem;
    }
}

@media (max-width: 576px) {
    .hero-section {
        padding: 0 1rem;
    }
    
    .hero-section h1 {
        font-size: 2rem;
    }
    
    .hero-buttons .btn {
        display: block;
        width: 100%;
        margin-bottom: 1rem;
    }
    
    /* 小さいスマホでは小さいオブジェクトのみ非表示 */
    .hero-section::after {
        display: none !important;
    }
    
    /* 大きいガラス風オブジェクトはさらに小さく調整 */
    .hero-section::before {
        width: 150px !important;
        height: 250px !important;
        right: 2% !important;
    }
    
    .problem-card,
    .feature-item {
        padding: 1.5rem;
    }
}

/* ================================
   Utility Classes
   ================================ */
.text-gradient {
    background: var(--gradient);
    background-clip: text;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.pacifico-text {
    font-family: 'Pacifico', cursive;
    font-weight: normal;
    color: var(--primary-color);
    font-size: 1.1em;
}

.bg-gradient {
    background: var(--gradient);
}

.shadow-custom {
    box-shadow: var(--box-shadow);
}

/* ================================
   Animations
   ================================ */
.fade-in {
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.6s ease;
}

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

/* ================================
   Loading Animation
   ================================ */
.loading {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--gradient);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 9999;
    transition: opacity 0.5s ease;
}

.loading.hidden {
    opacity: 0;
    pointer-events: none;
}

.loading-spinner {
    width: 60px;
    height: 60px;
    border: 3px solid rgba(255, 255, 255, 0.3);
    border-top: 3px solid white;
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

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

/* ================================
   Custom Scrollbar
   ================================ */
::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: #f1f1f1;
}

::-webkit-scrollbar-thumb {
    background: var(--gradient);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--primary-color);
}

/* ================================
   Screenshot Section
   ================================ */
.screenshot-container {
    position: relative;
    overflow: hidden;
    border-radius: 10px;
    transition: transform 0.3s ease;
}

.screenshot-container:hover {
    transform: scale(1.02);
}

.screenshot-container img {
    width: 100%;
    height: auto;
    display: block;
    box-shadow: 0 15px 35px rgba(0,0,0,0.1);
}