/* ==========================================================================
   Japanese Video Calling Platform - Style System
   Theme: Bright, Vibrant & Modern Japanese Aesthetic (Light Mode)
   Typography: Plus Jakarta Sans & Noto Sans JP
   ========================================================================== */

@import url('https://fonts.googleapis.com/css2?family=Noto+Sans+JP:wght@400;500;700;900&family=Plus+Jakarta+Sans:wght@500;600;700;800&display=swap');

:root {
    /* Color Tokens - Bright & Vibrant Theme */
    --bg-bright: #F5F7FB;
    --bg-card: #FFFFFF;
    --bg-card-glass: rgba(255, 255, 255, 0.88);
    --bg-nav: rgba(255, 255, 255, 0.9);
    
    --accent-blue: #0055FF;
    --accent-blue-hover: #0044CC;
    --accent-purple: #7C3AED;
    --accent-pink: #FF3B70;
    --accent-pink-hover: #E02B5F;
    --accent-cyan: #00B8D9;
    --accent-green: #00B074;

    --gradient-primary: linear-gradient(135deg, #0055FF 0%, #7C3AED 100%);
    --gradient-pink: linear-gradient(135deg, #FF3B70 0%, #FF5E8E 100%);
    --gradient-soft: linear-gradient(135deg, rgba(0, 85, 255, 0.06) 0%, rgba(124, 58, 237, 0.06) 100%);
    --gradient-light-pink: linear-gradient(135deg, rgba(255, 59, 112, 0.06) 0%, rgba(124, 58, 237, 0.06) 100%);

    --text-main: #0F172A;
    --text-body: #1E293B;
    --text-muted: #475569;
    --text-subtle: #64748B;

    --border-light: rgba(226, 232, 240, 0.9);
    --border-glow: rgba(0, 85, 255, 0.3);
    
    --shadow-sm: 0 2px 8px rgba(15, 23, 42, 0.04);
    --shadow-md: 0 10px 30px rgba(15, 23, 42, 0.07);
    --shadow-lg: 0 20px 40px rgba(15, 23, 42, 0.12);
    --shadow-blue: 0 10px 25px rgba(0, 85, 255, 0.25);
    --shadow-pink: 0 10px 25px rgba(255, 59, 112, 0.25);

    --font-jp: 'Noto Sans JP', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    --font-heading: 'Plus Jakarta Sans', 'Noto Sans JP', sans-serif;
}

/* Base Setup */
* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

body {
    background-color: var(--bg-bright);
    color: var(--text-body);
    font-family: var(--font-jp);
    line-height: 1.8;
    letter-spacing: 0.02em;
    overflow-x: hidden;
    position: relative;
    background-image: 
        radial-gradient(circle at 10% 10%, rgba(0, 85, 255, 0.07) 0%, transparent 40%),
        radial-gradient(circle at 90% 40%, rgba(255, 59, 112, 0.06) 0%, transparent 45%),
        radial-gradient(circle at 50% 80%, rgba(124, 58, 237, 0.05) 0%, transparent 50%);
    background-attachment: fixed;
}

h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-heading);
    font-weight: 700;
    color: var(--text-main);
    line-height: 1.35;
    letter-spacing: -0.01em;
}

a {
    color: var(--accent-blue);
    text-decoration: none;
    transition: all 0.25s ease;
}

a:hover {
    color: var(--accent-blue-hover);
}

/* Bright Glassmorphism Card */
.glass-card {
    background: var(--bg-card-glass);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border: 1px solid var(--border-light);
    border-radius: 20px;
    box-shadow: var(--shadow-md);
    transition: all 0.35s cubic-bezier(0.165, 0.84, 0.44, 1);
}

.glass-card:hover {
    border-color: var(--border-glow);
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg), 0 0 20px rgba(0, 85, 255, 0.08);
}

.glass-nav {
    background: var(--bg-nav);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border-light);
    box-shadow: var(--shadow-sm);
}

/* Gradient Text */
.gradient-text {
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.gradient-text-pink {
    background: var(--gradient-pink);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

/* Buttons */
.btn-neon {
    background: var(--gradient-primary);
    color: #FFFFFF !important;
    font-weight: 700;
    padding: 0.75rem 1.8rem;
    border-radius: 50px;
    border: none;
    box-shadow: var(--shadow-blue);
    transition: all 0.3s ease;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
}

.btn-neon:hover {
    transform: translateY(-2px) scale(1.02);
    box-shadow: 0 12px 30px rgba(0, 85, 255, 0.4);
    color: #FFFFFF !important;
}

.btn-glass {
    background: #FFFFFF;
    border: 1.5px solid var(--border-light);
    color: var(--text-main);
    font-weight: 600;
    padding: 0.75rem 1.8rem;
    border-radius: 50px;
    box-shadow: var(--shadow-sm);
    transition: all 0.3s ease;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
}

.btn-glass:hover {
    background: var(--bg-bright);
    border-color: var(--accent-blue);
    color: var(--accent-blue);
    box-shadow: var(--shadow-md);
}

.btn-pink {
    background: var(--gradient-pink);
    color: #FFFFFF !important;
    font-weight: 700;
    padding: 0.75rem 1.8rem;
    border-radius: 50px;
    border: none;
    box-shadow: var(--shadow-pink);
    transition: all 0.3s ease;
}

.btn-pink:hover {
    transform: translateY(-2px) scale(1.02);
    box-shadow: 0 12px 30px rgba(255, 59, 112, 0.4);
    color: #FFFFFF !important;
}

/* Badges */
.badge-neon {
    background: rgba(0, 85, 255, 0.08);
    color: var(--accent-blue);
    border: 1px solid rgba(0, 85, 255, 0.25);
    padding: 0.4rem 1rem;
    border-radius: 30px;
    font-size: 0.85rem;
    font-weight: 700;
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
}

.badge-18 {
    background: rgba(255, 59, 112, 0.1);
    color: var(--accent-pink);
    border: 1px solid rgba(255, 59, 112, 0.3);
    padding: 0.25rem 0.7rem;
    border-radius: 8px;
    font-weight: 900;
    font-size: 0.82rem;
}

/* Header & Navigation */
.logo-icon-box {
    width: 44px;
    height: 44px;
    border-radius: 14px;
    background: linear-gradient(135deg, rgba(0, 85, 255, 0.1) 0%, rgba(124, 58, 237, 0.1) 100%);
    border: 1.5px solid var(--border-glow);
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 4px 15px rgba(0, 85, 255, 0.15);
    transition: all 0.3s ease;
}

.navbar-brand:hover .logo-icon-box {
    transform: scale(1.06) rotate(-3deg);
    box-shadow: 0 6px 20px rgba(0, 85, 255, 0.3);
}

.brand-text-main {
    font-family: var(--font-heading);
    font-weight: 800;
    font-size: 1.45rem;
    letter-spacing: -0.03em;
    color: var(--text-main);
    line-height: 1;
}

.brand-text-sub {
    font-size: 0.72rem;
    font-weight: 700;
    color: var(--accent-blue);
    letter-spacing: 0.05em;
    margin-top: 3px;
}

.navbar-brand {
    font-family: var(--font-heading);
    font-weight: 800;
    font-size: 1.55rem;
    letter-spacing: -0.5px;
    color: var(--text-main) !important;
    white-space: nowrap;
}

.nav-link {
    color: var(--text-body) !important;
    font-weight: 600;
    font-size: 0.92rem;
    padding: 0.5rem 0.65rem !important;
    transition: color 0.25s ease;
    white-space: nowrap;
    display: inline-flex;
    align-items: center;
}

.nav-link:hover, .nav-link.active {
    color: var(--accent-blue) !important;
}

/* Hero Section */
.hero-section {
    padding: 90px 0 70px;
    position: relative;
}

.hero-video-mockup {
    position: relative;
    border-radius: 24px;
    overflow: hidden;
    border: 2px solid var(--border-light);
    box-shadow: 0 25px 60px rgba(15, 23, 42, 0.15);
    background: #FFFFFF;
}

.hero-video-mockup img {
    width: 100%;
    height: 460px;
    object-fit: cover;
}

.call-overlay {
    position: absolute;
    bottom: 20px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    gap: 15px;
    background: rgba(255, 255, 255, 0.9);
    backdrop-filter: blur(12px);
    padding: 10px 24px;
    border-radius: 50px;
    border: 1px solid var(--border-light);
    box-shadow: var(--shadow-md);
}

.call-btn {
    width: 48px;
    height: 48px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    cursor: pointer;
    transition: all 0.3s ease;
}

.call-btn-mute { background: rgba(15, 23, 42, 0.08); color: var(--text-main); }
.call-btn-end { background: #EF4444; color: #FFFFFF; box-shadow: 0 4px 15px rgba(239, 68, 68, 0.4); }
.call-btn-video { background: var(--accent-blue); color: #FFFFFF; box-shadow: 0 4px 15px rgba(0, 85, 255, 0.4); }

/* Section Titles */
.section-title {
    font-size: 2.3rem;
    font-weight: 800;
    color: var(--text-main);
    margin-bottom: 0.8rem;
}

.section-subtitle {
    color: var(--text-muted);
    font-size: 1.1rem;
    max-width: 650px;
    margin: 0 auto 2.5rem;
}

/* Feature Cards */
.feature-icon-wrapper {
    width: 64px;
    height: 64px;
    border-radius: 18px;
    background: var(--gradient-soft);
    border: 1px solid rgba(0, 85, 255, 0.2);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.7rem;
    color: var(--accent-blue);
    margin-bottom: 1.25rem;
}

/* Pricing Cards */
.pricing-card {
    position: relative;
    padding: 2.5rem 2rem;
    background: #FFFFFF;
}

.pricing-card.featured {
    border-color: var(--accent-blue);
    background: linear-gradient(180deg, rgba(0, 85, 255, 0.04) 0%, #FFFFFF 100%);
    transform: scale(1.03);
    box-shadow: 0 20px 50px rgba(0, 85, 255, 0.12);
}

.pricing-badge {
    position: absolute;
    top: -14px;
    left: 50%;
    transform: translateX(-50%);
    background: var(--gradient-primary);
    color: #FFFFFF;
    font-size: 0.75rem;
    font-weight: 800;
    padding: 4px 16px;
    border-radius: 20px;
    text-transform: uppercase;
}

.price-val {
    font-size: 2.8rem;
    font-weight: 800;
    color: var(--text-main);
    font-family: var(--font-heading);
}

.price-period {
    color: var(--text-muted);
    font-size: 0.95rem;
}

/* Accordions */
.accordion-item {
    background: #FFFFFF;
    border: 1px solid var(--border-light);
    border-radius: 14px !important;
    margin-bottom: 1rem;
    box-shadow: var(--shadow-sm);
    overflow: hidden;
}

.accordion-button {
    background: transparent;
    color: var(--text-main);
    font-weight: 700;
    font-size: 1.05rem;
    padding: 1.2rem 1.5rem;
    box-shadow: none !important;
}

.accordion-button:not(.collapsed) {
    background: rgba(0, 85, 255, 0.05);
    color: var(--accent-blue);
    border-bottom: 1px solid var(--border-light);
}

.accordion-body {
    color: var(--text-muted);
    padding: 1.25rem 1.5rem;
    line-height: 1.8;
}

/* Modals */
.modal-content {
    background: #FFFFFF;
    border: 1px solid var(--border-light);
    border-radius: 24px;
    color: var(--text-main);
    box-shadow: var(--shadow-lg);
}

.modal-header {
    border-bottom: 1px solid var(--border-light);
    padding: 1.5rem 2rem 1rem;
}

.modal-body {
    padding: 2rem;
}

.form-control, .form-select {
    background: #F8FAFC;
    border: 1.5px solid var(--border-light);
    border-radius: 12px;
    color: var(--text-main);
    padding: 0.8rem 1.2rem;
    transition: all 0.3s ease;
}

.form-control:focus, .form-select:focus {
    background: #FFFFFF;
    border-color: var(--accent-blue);
    color: var(--text-main);
    box-shadow: 0 0 0 4px rgba(0, 85, 255, 0.12);
}

.form-control::placeholder {
    color: var(--text-subtle);
}

/* Cookie Banner */
.cookie-banner {
    position: fixed;
    bottom: 24px;
    left: 24px;
    right: 24px;
    max-width: 600px;
    z-index: 9999;
    padding: 1.5rem;
    background: #FFFFFF;
    border-color: var(--accent-blue);
    box-shadow: var(--shadow-lg);
}

/* Back to Top */
.back-to-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 48px;
    height: 48px;
    border-radius: 50%;
    background: var(--gradient-primary);
    color: #FFFFFF;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    z-index: 999;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
    box-shadow: var(--shadow-blue);
    cursor: pointer;
}

.back-to-top.active {
    opacity: 1;
    visibility: visible;
}

.back-to-top:hover {
    transform: translateY(-4px);
    box-shadow: 0 10px 25px rgba(0, 85, 255, 0.5);
}

/* Responsive Overrides */
@media (max-width: 768px) {
    .section-title {
        font-size: 1.8rem;
    }
    
    .hero-section {
        padding: 50px 0 35px;
    }

    .hero-video-mockup img {
        height: 310px;
    }

    .pricing-card.featured {
        transform: none;
    }
}