/*
Theme Name: Soccer Digital Album
Theme URI: https://example.com/soccer-album
Author: Your Name
Author URI: https://example.com
Description: サッカースクールのデジタルアルバムテーマ。高級感のあるモダンなデザインで、360°写真、動画、画像ギャラリーに対応。
Version: 1.0.0
Requires at least: 5.8
Tested up to: 6.4
Requires PHP: 7.4
License: GNU General Public License v2 or later
License URI: http://www.gnu.org/licenses/gpl-2.0.html
Text Domain: soccer-album
Tags: sports, album, gallery, photography, modern, responsive
*/

/* ========================================
   CSS Variables & Reset
   ======================================== */
:root {
    /* Athletic Luxury Color Palette */
    --color-primary: #0A0E27;
    --color-secondary: #1A1F3A;
    --color-accent: #00D9FF;
    --color-accent-warm: #FF6B35;
    --color-text: #E8E8E8;
    --color-text-muted: #A0A0A0;
    --color-bg: #050810;
    --color-surface: #0F1419;
    
    /* Typography */
    --font-display: 'Bebas Neue', sans-serif;
    --font-body: 'Outfit', sans-serif;
    
    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 2rem;
    --spacing-lg: 4rem;
    --spacing-xl: 6rem;
    
    /* Shadows & Effects */
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 8px 24px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 16px 48px rgba(0, 0, 0, 0.6);
    --shadow-glow: 0 0 40px rgba(0, 217, 255, 0.4);
    
    /* Transitions */
    --transition-smooth: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-bounce: all 0.6s cubic-bezier(0.68, -0.55, 0.265, 1.55);
}

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

html {
    scroll-behavior: smooth;
    overflow-x: hidden;
}

body {
    font-family: var(--font-body);
    background: var(--color-bg);
    color: var(--color-text);
    line-height: 1.6;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

img {
    max-width: 100%;
    height: auto;
    display: block;
}

a {
    text-decoration: none;
    color: inherit;
}

.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

/* ========================================
   Hero Section
   ======================================== */
.hero {
    position: relative;
    height: 100vh;
    min-height: 600px;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

.hero-background {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: 
        linear-gradient(135deg, rgba(0, 217, 255, 0.1) 0%, rgba(255, 107, 53, 0.1) 100%),
        radial-gradient(circle at 30% 50%, rgba(0, 217, 255, 0.2) 0%, transparent 50%),
        var(--color-bg);
    animation: heroGradient 15s ease infinite;
}

@keyframes heroGradient {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.8; }
}

.hero-background::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: 
        repeating-linear-gradient(0deg, transparent, transparent 2px, rgba(255, 255, 255, 0.03) 2px, rgba(255, 255, 255, 0.03) 4px);
    pointer-events: none;
}

.hero-content {
    position: relative;
    z-index: 2;
    text-align: center;
    padding: var(--spacing-md);
}

.hero-title {
    display: flex;
    flex-direction: column;
    gap: 0;
}

.hero-title-main {
    font-family: var(--font-display);
    font-size: clamp(3rem, 12vw, 10rem);
    font-weight: 700;
    line-height: 0.85;
    letter-spacing: 0.05em;
    background: linear-gradient(135deg, var(--color-accent) 0%, var(--color-accent-warm) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    text-shadow: 0 0 80px rgba(0, 217, 255, 0.5);
    animation: titleGlow 3s ease-in-out infinite;
}

@keyframes titleGlow {
    0%, 100% { filter: brightness(1); }
    50% { filter: brightness(1.2); }
}

.hero-title-sub {
    font-family: var(--font-body);
    font-size: clamp(1.5rem, 4vw, 2.5rem);
    font-weight: 300;
    letter-spacing: 0.3em;
    color: var(--color-text);
    margin-top: var(--spacing-sm);
    text-transform: uppercase;
}

.hero-subtitle {
    font-size: clamp(1rem, 2vw, 1.25rem);
    color: var(--color-text-muted);
    margin-top: var(--spacing-md);
    font-weight: 300;
    letter-spacing: 0.1em;
}

.hero-scroll-indicator {
    position: absolute;
    bottom: var(--spacing-lg);
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-xs);
    color: var(--color-accent);
    font-size: 0.875rem;
    letter-spacing: 0.2em;
    animation: scrollBounce 2s ease-in-out infinite;
}

@keyframes scrollBounce {
    0%, 100% { transform: translateX(-50%) translateY(0); }
    50% { transform: translateX(-50%) translateY(10px); }
}

/* ========================================
   Albums Section
   ======================================== */
.albums-section {
    padding: var(--spacing-xl) 0;
    background: linear-gradient(180deg, var(--color-bg) 0%, var(--color-secondary) 100%);
    position: relative;
}

.albums-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--color-accent), transparent);
}

.section-header {
    text-align: center;
    margin-bottom: var(--spacing-lg);
}

.section-title {
    font-family: var(--font-display);
    font-size: clamp(2.5rem, 6vw, 4rem);
    letter-spacing: 0.1em;
    color: var(--color-text);
    margin-bottom: var(--spacing-sm);
}

.section-line {
    width: 100px;
    height: 3px;
    background: linear-gradient(90deg, var(--color-accent), var(--color-accent-warm));
    margin: 0 auto;
    border-radius: 2px;
}

/* Albums Grid */
.albums-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-lg);
}

.album-card {
    position: relative;
    display: flex;
    flex-direction: column;
    background: var(--color-surface);
    border-radius: 8px;
    overflow: hidden;
    transform-style: preserve-3d;
    transition: var(--transition-smooth);
    cursor: pointer;
}

.album-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, rgba(0, 217, 255, 0.1), rgba(255, 107, 53, 0.1));
    opacity: 0;
    transition: var(--transition-smooth);
    z-index: 1;
    pointer-events: none;
}

.album-card:hover {
    transform: translateY(-12px) rotateX(2deg);
    box-shadow: var(--shadow-lg), var(--shadow-glow);
}

.album-card:hover::before {
    opacity: 1;
}

.album-link {
    display: flex;
    flex-direction: column;
    height: 100%;
}

/* Album Cover */
.album-cover {
    position: relative;
    width: 100%;
    aspect-ratio: 1 / 1;
    overflow: hidden;
    background: var(--color-primary);
}

.album-image-wrapper {
    position: relative;
    width: 100%;
    height: 100%;
}

.album-image {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: var(--transition-smooth);
}

.album-card:hover .album-image {
    transform: scale(1.1);
}

.album-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(180deg, transparent 0%, rgba(0, 0, 0, 0.7) 100%);
    opacity: 0.6;
    transition: var(--transition-smooth);
}

.album-card:hover .album-overlay {
    opacity: 0.8;
}

/* Badge Container */
.album-badges {
    position: absolute;
    top: var(--spacing-sm);
    right: var(--spacing-sm);
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    z-index: 2;
}

/* Unified Badge Styling */
.album-badge {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem 1rem;
    backdrop-filter: blur(10px);
    border-radius: 20px;
    font-size: 0.875rem;
    font-weight: 600;
    box-shadow: var(--shadow-sm);
    transition: var(--transition-smooth);
}

.album-360-badge {
    background: rgba(0, 217, 255, 0.9);
    color: var(--color-primary);
}

.album-video-badge {
    background: rgba(255, 107, 53, 0.9);
    color: var(--color-primary);
}

.album-badge:hover {
    transform: scale(1.05);
    box-shadow: var(--shadow-md);
}

/* Album Spine */
.album-spine {
    position: absolute;
    right: 0;
    top: 0;
    width: 40px;
    height: 100%;
    background: linear-gradient(180deg, var(--color-primary), var(--color-secondary));
    border-left: 2px solid rgba(0, 217, 255, 0.3);
    display: flex;
    align-items: flex-end;
    justify-content: center;
    padding-bottom: var(--spacing-sm);
    z-index: 2;
}

.spine-label {
    font-family: var(--font-display);
    font-size: 1.25rem;
    letter-spacing: 0.1em;
    color: var(--color-accent);
    writing-mode: vertical-rl;
    text-orientation: mixed;
}

/* Album Info */
.album-info {
    padding: var(--spacing-md);
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.album-meta {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.875rem;
    color: var(--color-text-muted);
}

.album-separator {
    color: var(--color-accent);
}

.album-title {
    font-family: var(--font-display);
    font-size: 1.75rem;
    letter-spacing: 0.05em;
    color: var(--color-text);
    line-height: 1.2;
}

.album-stats {
    display: flex;
    gap: var(--spacing-md);
    margin-top: auto;
}

.stat-item {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.875rem;
    color: var(--color-text-muted);
}

.stat-item svg {
    color: var(--color-accent);
}

/* Album Hover Effect */
.album-hover-effect {
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: linear-gradient(90deg, var(--color-accent), var(--color-accent-warm));
    transform: scaleX(0);
    transform-origin: left;
    transition: var(--transition-smooth);
}

.album-card:hover .album-hover-effect {
    transform: scaleX(1);
}

/* View All Button */
.view-all-section {
    text-align: center;
    margin-top: var(--spacing-lg);
}

.view-all-btn {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: 1rem 2rem;
    background: linear-gradient(135deg, var(--color-accent), var(--color-accent-warm));
    color: var(--color-primary);
    font-family: var(--font-display);
    font-size: 1.25rem;
    letter-spacing: 0.1em;
    border-radius: 50px;
    transition: var(--transition-smooth);
    box-shadow: var(--shadow-md);
}

.view-all-btn:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-lg), var(--shadow-glow);
}

.view-all-btn svg {
    transition: var(--transition-smooth);
}

.view-all-btn:hover svg {
    transform: translateX(5px);
}

/* ========================================
   Stats Section
   ======================================== */
.stats-section {
    padding: var(--spacing-xl) 0;
    background: var(--color-primary);
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-lg);
}

.stat-box {
    text-align: center;
    padding: var(--spacing-lg);
    background: var(--color-surface);
    border-radius: 8px;
    border: 2px solid transparent;
    transition: var(--transition-smooth);
}

.stat-box:hover {
    border-color: var(--color-accent);
    box-shadow: var(--shadow-glow);
    transform: translateY(-5px);
}

.stat-number {
    font-family: var(--font-display);
    font-size: clamp(3rem, 8vw, 5rem);
    color: var(--color-accent);
    line-height: 1;
    margin-bottom: var(--spacing-sm);
}

.stat-label {
    font-size: 1rem;
    color: var(--color-text-muted);
    text-transform: uppercase;
    letter-spacing: 0.15em;
}

/* ========================================
   Single Album Page
   ======================================== */
   
/* Back Navigation */
.back-navigation {
    position: fixed;
    top: var(--spacing-md);
    left: var(--spacing-md);
    z-index: 100;
}

.back-btn {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.75rem 1.5rem;
    background: rgba(10, 14, 39, 0.9);
    backdrop-filter: blur(10px);
    border: 2px solid var(--color-accent);
    border-radius: 50px;
    color: var(--color-text);
    font-weight: 500;
    transition: var(--transition-smooth);
    box-shadow: var(--shadow-md);
}

.back-btn:hover {
    background: var(--color-accent);
    color: var(--color-primary);
    transform: translateX(-5px);
    box-shadow: var(--shadow-glow);
}

/* Album Header */
.album-header {
    position: relative;
    height: 60vh;
    min-height: 500px;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

.album-header-bg {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-size: cover;
    background-position: center;
    filter: blur(0px);
}

.album-header-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(180deg, rgba(5, 8, 16, 0.6) 0%, rgba(5, 8, 16, 0.9) 100%);
}

.album-header-content {
    position: relative;
    z-index: 2;
    text-align: center;
    padding: var(--spacing-md);
    max-width: 800px;
}

.album-meta-header {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    font-size: 0.875rem;
    color: var(--color-accent);
    margin-bottom: var(--spacing-md);
    text-transform: uppercase;
    letter-spacing: 0.15em;
}

.meta-separator {
    color: var(--color-text-muted);
}

.album-title-single {
    font-family: var(--font-display);
    font-size: clamp(2.5rem, 8vw, 5rem);
    letter-spacing: 0.05em;
    color: var(--color-text);
    margin-bottom: var(--spacing-md);
    line-height: 1.1;
}

.album-description {
    font-size: clamp(1rem, 2vw, 1.25rem);
    color: var(--color-text-muted);
    line-height: 1.8;
}

/* Section Header Inline */
.section-header-inline {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: var(--spacing-lg);
    padding-bottom: var(--spacing-sm);
    border-bottom: 2px solid rgba(0, 217, 255, 0.2);
}

.section-title-inline {
    font-family: var(--font-display);
    font-size: clamp(1.75rem, 4vw, 2.5rem);
    letter-spacing: 0.1em;
    color: var(--color-text);
}

.section-hint {
    font-size: 0.875rem;
    color: var(--color-text-muted);
    font-style: italic;
}

/* ========================================
   Panorama Section
   ======================================== */
.panorama-section {
    padding: var(--spacing-xl) 0;
    background: var(--color-surface);
}

.panorama-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-lg);
}

.panorama-item {
    position: relative;
    border-radius: 8px;
    overflow: hidden;
    background: var(--color-primary);
    box-shadow: var(--shadow-md);
}

.panorama-viewer {
    height: 75vh !important;  /* 画面の高さの75%まで広げる */
    min-height: 400px !important; /* スマホでも最低600pxは確保 */
}
.panorama-controls {
    position: absolute;
    bottom: var(--spacing-sm);
    right: var(--spacing-sm);
    z-index: 10;
}

.panorama-fullscreen {
    padding: 0.75rem;
    background: rgba(0, 217, 255, 0.9);
    border: none;
    border-radius: 4px;
    color: var(--color-primary);
    cursor: pointer;
    transition: var(--transition-smooth);
}

.panorama-fullscreen:hover {
    background: var(--color-accent);
    box-shadow: var(--shadow-glow);
}

.panorama-caption {
    padding: var(--spacing-md);
    font-size: 0.875rem;
    color: var(--color-text-muted);
    text-align: center;
}

/* ========================================
   Video Section
   ======================================== */
.video-section {
    padding: var(--spacing-xl) 0;
    background: var(--color-bg);
}

.video-wrapper {
    max-width: 1000px;
    margin: 0 auto;
}

.video-container {
    position: relative;
    width: 100%;
    padding-bottom: 56.25%; /* 16:9 aspect ratio */
    background: var(--color-primary);
    border-radius: 8px;
    overflow: hidden;
    box-shadow: var(--shadow-lg);
    margin-bottom: var(--spacing-md);
}

.video-container iframe,
.video-container video {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    border: none;
}

.video-player {
    background: #000;
}

/* Video Actions (Download Button) */
.video-actions {
    display: flex;
    justify-content: center;
    margin-top: var(--spacing-md);
}

.video-download-btn {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: 1rem 2rem;
    background: linear-gradient(135deg, var(--color-accent), var(--color-accent-warm));
    color: var(--color-primary);
    font-family: var(--font-body);
    font-size: 1rem;
    font-weight: 600;
    letter-spacing: 0.05em;
    border-radius: 50px;
    transition: var(--transition-smooth);
    box-shadow: var(--shadow-md);
    cursor: pointer;
}

.video-download-btn:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-lg), var(--shadow-glow);
}

.video-download-btn svg {
    transition: var(--transition-smooth);
}

.video-download-btn:hover svg {
    transform: translateY(3px);
}

/* ========================================
   Photo Gallery
   ======================================== */
.gallery-section {
    padding: var(--spacing-xl) 0;
    background: var(--color-surface);
}

.photo-gallery {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
    gap: var(--spacing-md);
}

.gallery-item {
    position: relative;
    aspect-ratio: 1 / 1;
    overflow: hidden;
    border-radius: 4px;
    background: var(--color-primary);
    cursor: pointer;
    transition: var(--transition-smooth);
}

.gallery-item:hover {
    transform: scale(1.05);
    box-shadow: var(--shadow-lg);
    z-index: 10;
}

.gallery-image-wrapper {
    position: relative;
    width: 100%;
    height: 100%;
}

.gallery-image-wrapper img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: var(--transition-smooth);
}

.gallery-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 217, 255, 0.8);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: var(--transition-smooth);
}

.gallery-item:hover .gallery-overlay {
    opacity: 1;
}

/* ========================================
   Album Navigation
   ======================================== */
.album-navigation {
    padding: var(--spacing-xl) 0;
    background: var(--color-bg);
}

.nav-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-lg);
}

.nav-card {
    position: relative;
    padding: var(--spacing-lg);
    background: var(--color-surface);
    border: 2px solid transparent;
    border-radius: 8px;
    transition: var(--transition-smooth);
    overflow: hidden;
}

.nav-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 4px;
    height: 100%;
    background: linear-gradient(180deg, var(--color-accent), var(--color-accent-warm));
    transform: scaleY(0);
    transform-origin: top;
    transition: var(--transition-smooth);
}

.nav-card:hover {
    border-color: var(--color-accent);
    box-shadow: var(--shadow-md);
    transform: translateY(-5px);
}

.nav-card:hover::before {
    transform: scaleY(1);
}

.nav-direction {
    font-size: 0.875rem;
    color: var(--color-text-muted);
    text-transform: uppercase;
    letter-spacing: 0.15em;
    margin-bottom: var(--spacing-sm);
}

.nav-title {
    font-family: var(--font-display);
    font-size: 1.5rem;
    letter-spacing: 0.05em;
    color: var(--color-text);
    margin-bottom: var(--spacing-md);
}

.nav-arrow {
    color: var(--color-accent);
    transition: var(--transition-smooth);
}

.nav-prev:hover .nav-arrow {
    transform: translateX(-5px);
}

.nav-next:hover .nav-arrow {
    transform: translateX(5px);
}

/* ========================================
   Footer
   ======================================== */
.site-footer {
    padding: var(--spacing-lg) 0;
    background: var(--color-primary);
    border-top: 1px solid rgba(0, 217, 255, 0.2);
    text-align: center;
}

.site-footer p {
    font-size: 0.875rem;
    color: var(--color-text-muted);
    letter-spacing: 0.05em;
}

/* ========================================
   Responsive Design
   ======================================== */
@media (max-width: 768px) {
    :root {
        --spacing-xl: 4rem;
        --spacing-lg: 3rem;
    }
    
    .albums-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-md);
    }
    
    .stats-grid {
        grid-template-columns: 1fr;
    }
    
    .photo-gallery {
        grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
        gap: var(--spacing-sm);
    }
    
    .panorama-viewer {
        height: 300px;
    }
    
    .album-header {
        height: 50vh;
        min-height: 400px;
    }
    
    .back-navigation {
        top: var(--spacing-sm);
        left: var(--spacing-sm);
    }
    
    .back-btn span {
        display: none;
    }
    
    .section-header-inline {
        flex-direction: column;
        align-items: flex-start;
        gap: var(--spacing-xs);
    }
    
    .album-badges {
        flex-direction: row;
        flex-wrap: wrap;
    }
    
    .hero {
        min-height: 500px;
    }
}

@media (max-width: 480px) {
    .hero-scroll-indicator {
        bottom: var(--spacing-md);
    }
    
    .album-spine {
        width: 30px;
    }
    
    .spine-label {
        font-size: 1rem;
    }
    
    .video-download-btn {
        padding: 0.75rem 1.5rem;
        font-size: 0.875rem;
    }
}

/* ========================================
   Utility Classes
   ======================================== */
.fade-in {
    opacity: 0;
    animation: fadeIn 0.8s ease forwards;
}

@keyframes fadeIn {
    to { opacity: 1; }
}

.slide-up {
    opacity: 0;
    transform: translateY(30px);
    animation: slideUp 0.8s ease forwards;
}

@keyframes slideUp {
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Loading States */
.loading {
    position: relative;
    pointer-events: none;
}

.loading::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 40px;
    height: 40px;
    margin: -20px 0 0 -20px;
    border: 3px solid rgba(0, 217, 255, 0.2);
    border-top-color: var(--color-accent);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

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

/* No Albums Message */
.no-albums {
    grid-column: 1 / -1;
    text-align: center;
    padding: var(--spacing-xl) 0;
    color: var(--color-text-muted);
    font-size: 1.25rem;
}
/* ========================================
   追加スタイル - ネオンエフェクト & 動画機能強化
   v2.0.0 - ACF完全不要版
   ======================================== */

/* ネオンエフェクト用のCSS変数追加 */
:root {
    --neon-cyan: #00D9FF;
    --neon-pink: #FF6B35;
    --neon-purple: #B537F2;
    --neon-rgb: 0, 217, 255;
}

/* ========================================
   360° Panorama 強化スタイル
   ======================================== */
.panorama-loading {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    text-align: center;
    z-index: 5;
    color: var(--color-text-muted);
}

.loading-spinner {
    width: 50px;
    height: 50px;
    border: 3px solid rgba(0, 217, 255, 0.2);
    border-top-color: var(--neon-cyan);
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin: 0 auto 1rem;
}

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

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

.panorama-control-btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.75rem 1rem;
    background: rgba(0, 217, 255, 0.1);
    border: 2px solid rgba(0, 217, 255, 0.3);
    border-radius: 8px;
    color: var(--neon-cyan);
    font-family: var(--font-body);
    font-size: 0.875rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.panorama-control-btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(0, 217, 255, 0.3), transparent);
    transition: left 0.5s ease;
}

.panorama-control-btn:hover::before {
    left: 100%;
}

.panorama-control-btn:hover {
    background: rgba(0, 217, 255, 0.2);
    border-color: var(--neon-cyan);
    box-shadow: 0 0 20px rgba(0, 217, 255, 0.4), inset 0 0 20px rgba(0, 217, 255, 0.1);
    transform: translateY(-2px);
}

.panorama-control-btn.active {
    background: rgba(0, 217, 255, 0.3);
    border-color: var(--neon-cyan);
    box-shadow: 0 0 30px rgba(0, 217, 255, 0.6);
}

.panorama-control-btn svg {
    filter: drop-shadow(0 0 5px rgba(0, 217, 255, 0.8));
}

/* ========================================
   動画コントロール強化
   ======================================== */
.video-custom-controls {
    display: flex;
    justify-content: center;
    gap: 1rem;
    margin-top: 1rem;
}

.video-control-btn {
    display: inline-flex;
    align-items: center;
    gap: 0.75rem;
    padding: 1rem 2rem;
    background: linear-gradient(135deg, rgba(0, 217, 255, 0.2), rgba(255, 107, 53, 0.2));
    border: 2px solid rgba(0, 217, 255, 0.4);
    border-radius: 50px;
    color: var(--color-text);
    font-family: var(--font-body);
    font-size: 1rem;
    font-weight: 600;
    letter-spacing: 0.05em;
    cursor: pointer;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    overflow: hidden;
}

.video-control-btn::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(0, 217, 255, 0.4), transparent);
    transform: translate(-50%, -50%);
    transition: width 0.5s ease, height 0.5s ease;
}

.video-control-btn:hover::before {
    width: 300px;
    height: 300px;
}

.video-control-btn:hover {
    transform: translateY(-3px) scale(1.05);
    border-color: var(--neon-cyan);
    box-shadow: 0 10px 40px rgba(0, 217, 255, 0.4),
                0 0 30px rgba(0, 217, 255, 0.3),
                inset 0 0 20px rgba(0, 217, 255, 0.1);
}

.video-control-btn svg {
    filter: drop-shadow(0 0 8px rgba(0, 217, 255, 0.8));
    transition: transform 0.3s ease;
}

.video-control-btn:hover svg {
    transform: scale(1.1);
}

/* ========================================
   ダウンロードボタン - ネオンエフェクト完全版
   ======================================== */
.neon-btn {
    position: relative;
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: 1.25rem 2.5rem;
    background: linear-gradient(135deg, var(--neon-cyan), var(--neon-pink));
    color: var(--color-primary);
    font-family: var(--font-body);
    font-size: 1.1rem;
    font-weight: 700;
    letter-spacing: 0.05em;
    text-transform: uppercase;
    border: none;
    border-radius: 50px;
    cursor: pointer;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    box-shadow: 0 5px 25px rgba(0, 217, 255, 0.4),
                0 0 40px rgba(255, 107, 53, 0.3),
                inset 0 0 20px rgba(255, 255, 255, 0.1);
    overflow: hidden;
}

.neon-btn::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: linear-gradient(45deg, 
        transparent, 
        rgba(255, 255, 255, 0.3), 
        transparent);
    transform: rotate(45deg);
    animation: neon-shine 3s linear infinite;
}

@keyframes neon-shine {
    0% { transform: rotate(45deg) translateY(-100%); }
    100% { transform: rotate(45deg) translateY(100%); }
}

.neon-btn::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: radial-gradient(circle at center, 
        rgba(255, 255, 255, 0.2), 
        transparent 70%);
    opacity: 0;
    transition: opacity 0.3s ease;
}

.neon-btn:hover {
    transform: translateY(-5px) scale(1.05);
    box-shadow: 0 10px 50px rgba(0, 217, 255, 0.6),
                0 0 60px rgba(255, 107, 53, 0.5),
                0 0 30px rgba(181, 55, 242, 0.3),
                inset 0 0 30px rgba(255, 255, 255, 0.2);
    animation: neon-pulse 1.5s ease-in-out infinite;
}

.neon-btn:hover::after {
    opacity: 1;
}

.neon-btn:active {
    transform: translateY(-3px) scale(1.02);
}

@keyframes neon-pulse {
    0%, 100% {
        box-shadow: 0 10px 50px rgba(0, 217, 255, 0.6),
                    0 0 60px rgba(255, 107, 53, 0.5),
                    0 0 30px rgba(181, 55, 242, 0.3);
    }
    50% {
        box-shadow: 0 15px 60px rgba(0, 217, 255, 0.8),
                    0 0 80px rgba(255, 107, 53, 0.7),
                    0 0 50px rgba(181, 55, 242, 0.5);
    }
}

.neon-btn svg {
    filter: drop-shadow(0 0 10px rgba(255, 255, 255, 0.8));
    transition: transform 0.3s ease;
}

.neon-btn:hover svg {
    transform: translateY(3px) scale(1.1);
    animation: download-bounce 0.6s ease-in-out infinite;
}

@keyframes download-bounce {
    0%, 100% { transform: translateY(3px) scale(1.1); }
    50% { transform: translateY(6px) scale(1.1); }
}

.btn-downloading {
    animation: blink 0.8s ease-in-out infinite;
}

@keyframes blink {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.5; }
}

/* ========================================
   セクションヘッダーアイコン
   ======================================== */
.section-icon {
    display: inline-block;
    vertical-align: middle;
    margin-right: 0.5rem;
    filter: drop-shadow(0 0 10px var(--neon-cyan));
    animation: icon-float 3s ease-in-out infinite;
}

@keyframes icon-float {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-5px); }
}

/* ========================================
   ギャラリーオーバーレイ強化
   ======================================== */
.gallery-overlay {
    display: flex;
    align-items: center;
    justify-content: center;
    flex-direction: column;
    gap: 0.5rem;
}

.overlay-text {
    font-size: 0.875rem;
    font-weight: 600;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    text-shadow: 0 0 10px rgba(255, 255, 255, 0.8);
}

/* ========================================
   レスポンシブ対応
   ======================================== */
@media (max-width: 768px) {
    .panorama-controls {
        justify-content: center;
    }
    
    .panorama-control-btn,
    .video-control-btn {
        padding: 0.5rem 1rem;
        font-size: 0.75rem;
    }
    
    .neon-btn {
        padding: 1rem 2rem;
        font-size: 0.95rem;
    }
    
    .video-custom-controls {
        flex-direction: column;
    }
}

@media (max-width: 480px) {
    .panorama-control-btn span,
    .video-control-btn span {
        display: none;
    }
    
    .neon-btn {
        padding: 0.875rem 1.5rem;
        font-size: 0.875rem;
    }
}

/* ========================================
   アクセシビリティ
   ======================================== */
.panorama-control-btn:focus,
.video-control-btn:focus,
.neon-btn:focus {
    outline: 3px solid var(--neon-cyan);
    outline-offset: 3px;
}

/* ========================================
   パフォーマンス最適化
   ======================================== */
.panorama-viewer,
.video-container,
.gallery-item {
    will-change: transform;
}

/* GPU アクセラレーション */
.neon-btn,
.panorama-control-btn,
.video-control-btn {
    transform: translateZ(0);
    backface-visibility: hidden;
}