/* ==========================================================================
   Bousai Campaign Combined Style (All-in-One CSS)
   ========================================================================== */

/* 1. Variables & Design Tokens */
:root {
    --color-bg-dark: #121212;
    --color-bg-panel: #1A1A1A;
    --color-bg-light: #F4F4F4;
    --color-text-light: #FFFFFF;
    --color-text-dark: #121212;
    --color-text-muted: #888888;
    --color-primary: #FFD500;       /* Alert Yellow */
    --color-primary-hover: #FFE033;
    --color-secondary: #000000;
    --color-danger: #D32F2F;
    --font-family: 'Montserrat', 'Noto Sans JP', sans-serif;
    --transition-smooth: all 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);
    --border-accent: 3px solid var(--color-primary);
}

/* 2. Common Reset & Base Layout */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

body {
    background-color: var(--color-bg-dark) !important;
    color: var(--color-text-light) !important;
    font-family: var(--font-family) !important;
    line-height: 1.6;
    overflow-x: hidden;
}

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

/* Header Styling */
.main-header {
    background-color: rgba(0, 0, 0, 0.9);
    border-bottom: var(--border-accent);
    position: sticky;
    top: 0;
    z-index: 1000;
    backdrop-filter: blur(10px);
}

.header-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 1.2rem 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo-area {
    display: flex;
    flex-direction: column;
}

.station-name {
    font-size: 1.6rem;
    font-weight: 900;
    color: var(--color-primary);
    letter-spacing: -0.02em;
    line-height: 1.1;
}

.logo-sub {
    font-size: 0.7rem;
    font-weight: 700;
    color: var(--color-text-light);
    letter-spacing: 0.25em;
    text-transform: uppercase;
    margin-top: 0.2rem;
}

.header-nav {
    display: flex;
    gap: 1.5rem;
}

.nav-link {
    font-size: 0.9rem;
    font-weight: 700;
    transition: var(--transition-smooth);
    padding: 0.5rem 0;
    position: relative;
    color: #FFFFFF !important;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 3px;
    background-color: var(--color-primary);
    transition: var(--transition-smooth);
}

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

.nav-link:hover {
    color: var(--color-primary) !important;
}

/* Section Common Container & Titles */
.section-container {
    max-width: 1200px;
    margin: 0 auto;
}

.section-title {
    font-size: 2.2rem;
    font-weight: 900;
    margin-bottom: 4rem;
    position: relative;
    display: inline-block;
    color: #FFFFFF !important;
}

.section-title span {
    display: block;
    font-size: 1rem;
    color: var(--color-primary) !important;
    margin-top: 0.5rem;
    font-weight: 700;
    letter-spacing: 0.05em;
}

.section-title::before {
    content: '';
    position: absolute;
    bottom: -15px;
    left: 0;
    width: 60px;
    height: 5px;
    background-color: var(--color-primary);
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.75rem;
    padding: 1rem 2rem;
    font-size: 1rem;
    font-weight: 800;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    border: none;
    cursor: pointer;
    transition: var(--transition-smooth);
    border-radius: 0;
}

.btn-primary {
    background-color: var(--color-primary) !important;
    color: var(--color-text-dark) !important;
    border: 3px solid var(--color-primary) !important;
}

.btn-primary:hover {
    background-color: transparent !important;
    color: var(--color-primary) !important;
}

.btn-secondary {
    background-color: transparent !important;
    color: var(--color-text-light) !important;
    border: 3px solid var(--color-text-light) !important;
}

.btn-secondary:hover {
    background-color: var(--color-text-light) !important;
    color: var(--color-text-dark) !important;
}

/* Footer Section */
.main-footer {
    background-color: #000000 !important;
    padding: 4rem 2rem;
    font-size: 0.9rem;
}

.footer-container {
    max-width: 1200px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
}

.footer-logo {
    font-size: 1.8rem;
    font-weight: 900;
    color: var(--color-primary);
    margin-bottom: 1rem;
    letter-spacing: -0.02em;
}

.footer-left p {
    color: #CCCCCC;
    margin-bottom: 0.5rem;
}

.footer-address {
    font-size: 0.8rem;
    color: var(--color-text-muted) !important;
}

.footer-socials {
    display: flex;
    gap: 1rem;
    margin-top: 1.5rem;
}

.footer-socials a {
    width: 40px;
    height: 40px;
    background-color: #1A1A1A;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.1rem;
    transition: var(--transition-smooth);
    color: #FFFFFF !important;
}

.footer-socials a:hover {
    background-color: var(--color-primary);
    color: var(--color-text-dark) !important;
    transform: translateY(-3px);
}

.footer-right {
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    text-align: right;
}

.footer-right p {
    color: #888888;
    line-height: 1.6;
}

.copyright {
    font-size: 0.75rem;
    color: var(--color-text-muted);
    margin-top: 2rem;
}

/* 3. Hero Section */
.hero-section {
    position: relative;
    padding: 8rem 2rem;
    background-color: #000000 !important;
    background-image: 
        radial-gradient(circle at 80% 20%, rgba(255, 213, 0, 0.15) 0%, transparent 50%),
        linear-gradient(135deg, #111111 0%, #000000 100%) !important;
    overflow: hidden;
}

.hero-stripe {
    position: absolute;
    bottom: -50px;
    right: -100px;
    width: 500px;
    height: 100px;
    background: repeating-linear-gradient(
        -45deg,
        var(--color-primary),
        var(--color-primary) 30px,
        #000000 30px,
        #000000 60px
    );
    transform: rotate(-15deg);
    opacity: 0.7;
    pointer-events: none;
    box-shadow: 0 0 30px rgba(255, 213, 0, 0.3);
}

.hero-container {
    max-width: 1200px;
    margin: 0 auto;
    position: relative;
    z-index: 10;
}

.badge {
    display: inline-block;
    background-color: var(--color-primary);
    color: var(--color-text-dark);
    padding: 0.4rem 1rem;
    font-size: 0.85rem;
    font-weight: 900;
    letter-spacing: 0.05em;
    margin-bottom: 2rem;
    text-transform: uppercase;
    transform: skewX(-10deg);
}

.hero-title {
    font-size: 3.5rem;
    font-weight: 900;
    line-height: 1.15;
    letter-spacing: -0.02em;
    margin-bottom: 1.5rem;
    text-transform: uppercase;
    color: #FFFFFF !important;
}

.hero-title span {
    display: block;
}

.hero-title .small-title {
    font-size: 1.5rem;
    color: var(--color-primary) !important;
    margin-bottom: 0.5rem;
    font-weight: 700;
    letter-spacing: 0.1em;
}

.hero-title .main-title {
    text-shadow: 2px 2px 0px rgba(0, 0, 0, 0.5);
}

.hero-tagline {
    font-size: 1.2rem;
    color: var(--color-text-muted);
    margin-bottom: 3rem;
    font-weight: 500;
    max-width: 600px;
    border-left: 4px solid var(--color-primary);
    padding-left: 1rem;
}

.hero-actions {
    display: flex;
    gap: 1rem;
}

/* 4. About Section */
.about-section {
    padding: 6rem 2rem;
    background-color: var(--color-bg-panel) !important;
    border-bottom: 1px solid #222222;
}

.about-content {
    display: grid;
    grid-template-columns: 1.2fr 0.8fr;
    gap: 4rem;
    align-items: center;
}

.about-text-wrapper .lead-text {
    font-size: 1.4rem;
    color: var(--color-primary);
    font-weight: 700;
    margin-bottom: 1.5rem;
}

.about-text-wrapper .desc-text {
    font-size: 1rem;
    color: #CCCCCC;
    margin-bottom: 1.5rem;
}

.about-badge-card {
    background-color: #000000;
    border: var(--border-accent);
    padding: 2.5rem;
    position: relative;
    overflow: hidden;
}

.card-warning-tape {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 10px;
    background: repeating-linear-gradient(
        -45deg,
        var(--color-primary),
        var(--color-primary) 10px,
        #000000 10px,
        #000000 20px
    );
}

.about-badge-card h3 {
    font-size: 1.3rem;
    font-weight: 800;
    line-height: 1.4;
    margin-bottom: 1.5rem;
    color: var(--color-primary);
}

.about-badge-card p {
    font-size: 0.9rem;
    color: #CCCCCC;
    margin-bottom: 1.5rem;
}

.card-footer-info {
    font-size: 0.8rem;
    font-weight: 700;
    color: #FFFFFF;
    background-color: #222222;
    padding: 0.6rem 1rem;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
}

.card-footer-info i {
    color: var(--color-primary);
}

/* 5. Advisor Section */
.advisor-section {
    padding: 6rem 2rem;
    background-color: var(--color-bg-dark) !important;
}

.advisor-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 2.5rem;
}

.advisor-card {
    background-color: var(--color-bg-panel);
    border-left: 6px solid var(--color-primary);
    padding: 2rem;
    display: flex;
    gap: 2rem;
    align-items: flex-start;
    transition: var(--transition-smooth);
}

.advisor-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.4);
}

.advisor-img-wrapper {
    flex-shrink: 0;
    width: 120px;
    height: 120px;
    border: 3px solid #333333;
    overflow: hidden;
}

.advisor-img-wrapper img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    filter: grayscale(20%);
    transition: var(--transition-smooth);
}

.advisor-card:hover .advisor-img-wrapper img {
    filter: grayscale(0%);
    transform: scale(1.05);
}

.advisor-info {
    flex-grow: 1;
}

.advisor-role {
    font-size: 0.75rem;
    font-weight: 800;
    color: var(--color-primary);
    letter-spacing: 0.1em;
    display: block;
    margin-bottom: 0.5rem;
}

.advisor-name {
    font-size: 1.4rem;
    font-weight: 800;
    margin-bottom: 1rem;
    color: #FFFFFF !important;
}

.advisor-name span {
    font-size: 0.85rem;
    color: var(--color-text-muted);
    font-weight: 400;
    margin-left: 0.5rem;
    letter-spacing: 0.05em;
}

.advisor-profile {
    font-size: 0.9rem;
    color: #CCCCCC;
    line-height: 1.5;
}

/* 6. Audio Contents Section (Accordion) */
.contents-section {
    padding: 6rem 2rem;
    background-color: var(--color-bg-panel) !important;
}

.section-subtitle {
    font-size: 1.1rem;
    color: #CCCCCC;
    margin-bottom: 3rem;
}

.accordion-container {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.accordion-item {
    background-color: var(--color-bg-dark);
    border: 1px solid #222222;
    overflow: hidden;
    transition: var(--transition-smooth);
}

.accordion-header {
    width: 100%;
    background: none;
    border: none;
    color: inherit;
    text-align: left;
    padding: 1.5rem 2rem;
    display: flex;
    align-items: center;
    cursor: pointer;
    font-family: var(--font-family);
    transition: var(--transition-smooth);
}

.accordion-header:hover {
    background-color: #1a1a1a;
}

.theme-number {
    font-size: 0.9rem;
    font-weight: 900;
    color: var(--color-primary);
    border-right: 2px solid #333333;
    padding-right: 1.5rem;
    margin-right: 1.5rem;
    letter-spacing: 0.1em;
}

.theme-title {
    font-size: 1.15rem;
    font-weight: 800;
    flex-grow: 1;
    color: #FFFFFF !important;
}

.theme-lecturer {
    font-size: 0.85rem;
    font-weight: 700;
    background-color: #222222;
    padding: 0.3rem 0.8rem;
    margin-right: 1.5rem;
    color: #CCCCCC;
}

.arrow-icon {
    font-size: 1rem;
    color: var(--color-text-muted);
    transition: transform 0.3s ease;
}

.accordion-item.active {
    border-color: var(--color-primary);
}

.accordion-item.active .accordion-header {
    background-color: #0c0c0c;
    border-bottom: 1px solid #222222;
}

.accordion-item.active .arrow-icon {
    transform: rotate(180deg);
    color: var(--color-primary);
}

.accordion-content {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.4s ease;
    padding: 0 2rem;
}

.accordion-item.active .accordion-content {
    max-height: 600px;
    padding: 2rem;
}

.theme-description {
    font-size: 0.95rem;
    color: #CCCCCC;
    margin-bottom: 1.5rem;
    border-left: 3px solid #444444;
    padding-left: 1rem;
}

.topic-list {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.topic-item {
    background-color: var(--color-bg-panel);
    border: 1px solid #2d2d2d;
    padding: 1rem 1.5rem;
    display: flex;
    align-items: center;
    cursor: pointer;
    transition: var(--transition-smooth);
}

.topic-item:hover {
    border-color: var(--color-primary);
    transform: translateX(5px);
}

.topic-play-btn {
    width: 35px;
    height: 35px;
    background-color: #222222;
    border-radius: 50%;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    color: var(--color-primary);
    margin-right: 1.5rem;
    transition: var(--transition-smooth);
    flex-shrink: 0;
}

.topic-item:hover .topic-play-btn {
    background-color: var(--color-primary);
    color: var(--color-text-dark);
}

.topic-title {
    font-size: 0.95rem;
    font-weight: 700;
    flex-grow: 1;
    color: #FFFFFF !important;
}

.topic-time {
    font-size: 0.85rem;
    color: var(--color-text-muted);
    font-weight: 600;
}

.topic-item.playing {
    border-color: var(--color-primary);
    background-color: rgba(255, 213, 0, 0.05);
}

.topic-item.playing .topic-play-btn {
    background-color: var(--color-primary);
    color: var(--color-text-dark);
}

.topic-item.playing .topic-title {
    color: var(--color-primary) !important;
}

/* 7. Floating Player Bar */
.floating-player-bar {
    position: fixed;
    bottom: -100px;
    left: 0;
    right: 0;
    height: 80px;
    background-color: #000000 !important;
    border-top: var(--border-accent);
    z-index: 9999;
    transition: bottom 0.4s cubic-bezier(0.25, 0.8, 0.25, 1);
    box-shadow: 0 -10px 30px rgba(0,0,0,0.5);
}

.floating-player-bar.active {
    bottom: 0;
}

.player-container {
    max-width: 1200px;
    margin: 0 auto;
    height: 100%;
    padding: 0 2rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.player-info {
    display: flex;
    align-items: center;
    gap: 1rem;
    width: 30%;
}

.player-icon {
    font-size: 1.5rem;
    color: var(--color-primary);
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0% { transform: scale(1); opacity: 1; }
    50% { transform: scale(1.1); opacity: 0.7; }
    100% { transform: scale(1); opacity: 1; }
}

.player-text {
    overflow: hidden;
}

.player-topic {
    font-size: 0.85rem;
    font-weight: 800;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    color: #FFFFFF !important;
}

.player-sub {
    font-size: 0.7rem;
    color: var(--color-text-muted);
    font-weight: 700;
}

.player-controls {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 1.5rem;
    width: 50%;
}

.player-btn {
    background: none;
    border: none;
    color: #FFFFFF !important;
    font-size: 1rem;
    cursor: pointer;
    transition: var(--transition-smooth);
}

.player-btn:hover {
    color: var(--color-primary) !important;
}

.player-btn.play-main {
    width: 45px;
    height: 45px;
    background-color: var(--color-primary) !important;
    color: var(--color-text-dark) !important;
    border-radius: 50%;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
}

.player-btn.play-main:hover {
    transform: scale(1.05);
    background-color: var(--color-primary-hover) !important;
}

.player-progress-container {
    display: flex;
    align-items: center;
    gap: 0.8rem;
    flex-grow: 1;
}

.time-display {
    font-size: 0.75rem;
    color: var(--color-text-muted);
    font-weight: 700;
    min-width: 35px;
}

.player-progress-bg {
    height: 6px;
    background-color: #222222;
    flex-grow: 1;
    cursor: pointer;
    position: relative;
}

.player-progress-bar {
    height: 100%;
    background-color: var(--color-primary);
    width: 0%;
    position: absolute;
    top: 0;
    left: 0;
}

.player-volume {
    display: flex;
    align-items: center;
    gap: 0.8rem;
    width: 15%;
    justify-content: flex-end;
}

.player-volume i {
    color: var(--color-text-muted);
}

.volume-slider-bg {
    width: 70px;
    height: 4px;
    background-color: #222222;
    cursor: pointer;
    position: relative;
}

.volume-slider-bar {
    height: 100%;
    background-color: var(--color-primary);
}

/* 8. Browser Game Section */
.game-section {
    padding: 6rem 2rem;
    background-color: var(--color-bg-dark) !important;
}

.game-card {
    background-color: var(--color-bg-panel);
    border: 2px solid #222222;
    display: grid;
    grid-template-columns: 1fr 1.1fr;
    align-items: center;
    position: relative;
}

.game-card::after {
    content: '';
    position: absolute;
    bottom: -10px;
    right: -10px;
    width: 100%;
    height: 100%;
    border: 3px solid var(--color-primary);
    z-index: -1;
    pointer-events: none;
}

.game-image {
    position: relative;
    height: 100%;
    min-height: 350px;
    overflow: hidden;
}

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

.game-card:hover .game-image img {
    transform: scale(1.03);
}

.game-badge {
    position: absolute;
    top: 1.5rem;
    left: 1.5rem;
    background-color: var(--color-danger);
    color: #FFFFFF;
    font-size: 0.75rem;
    font-weight: 900;
    padding: 0.4rem 1rem;
    letter-spacing: 0.1em;
}

.game-info {
    padding: 3.5rem;
}

.game-tag {
    font-size: 0.8rem;
    font-weight: 800;
    color: var(--color-primary);
    letter-spacing: 0.1em;
    display: block;
    margin-bottom: 0.5rem;
}

.game-info h3 {
    font-size: 1.8rem;
    font-weight: 900;
    line-height: 1.2;
    margin-bottom: 1.5rem;
    color: #FFFFFF !important;
}

.game-info p {
    color: #CCCCCC;
    font-size: 0.95rem;
    line-height: 1.6;
    margin-bottom: 2rem;
}

.game-features {
    display: flex;
    flex-wrap: wrap;
    gap: 1.5rem;
    margin-bottom: 1rem;
}

.feature-item {
    font-size: 0.85rem;
    font-weight: 700;
    color: #FFFFFF;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.feature-item i {
    color: var(--color-primary);
}

/* 9. Sponsor Section */
.sponsor-section {
    padding: 6rem 2rem;
    background-color: var(--color-bg-panel) !important;
    border-bottom: var(--border-accent);
}

.sponsor-desc {
    font-size: 1rem;
    color: #CCCCCC;
    margin-bottom: 3rem;
}

.sponsor-grid {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: 1.5rem;
}

.sponsor-item {
    background-color: var(--color-bg-dark);
    border: 1px solid #222222;
    padding: 1.5rem 1rem;
    text-align: center;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 1rem;
    transition: var(--transition-smooth);
}

.sponsor-item:hover {
    border-color: var(--color-primary);
    transform: translateY(-5px);
    box-shadow: 0 5px 15px rgba(255, 213, 0, 0.1);
}

.sponsor-logo-box {
    width: 100%;
    height: 60px;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    background-color: #FFFFFF !important;
    padding: 0.5rem;
    border-radius: 4px;
}

.sponsor-logo-box img {
    max-width: 100%;
    max-height: 100%;
    object-fit: contain;
    filter: grayscale(0%) !important;
    opacity: 1 !important;
    transition: var(--transition-smooth);
}

.sponsor-item:hover .sponsor-logo-box img {
    filter: grayscale(0%) !important;
    opacity: 1 !important;
}

.sponsor-name {
    font-size: 0.75rem;
    font-weight: 700;
    color: var(--color-text-muted);
    transition: var(--transition-smooth);
}

/* ロゴなし時のゴシック体テキスト表示 */
.sponsor-text-logo {
    font-family: 'Noto Sans JP', 'Hiragino Kaku Gothic ProN', 'Meiryo', sans-serif !important;
    font-size: 0.85rem;
    font-weight: 800;
    color: #121212 !important;
    text-align: center;
    line-height: 1.3;
    display: flex;
    align-items: center;
    justify-content: center;
    width: 100%;
    height: 100%;
}

.sponsor-item:hover .sponsor-name {
    color: #FFFFFF !important;
}

/* Responsive Overrides */
@media (max-width: 1024px) {
    .about-content {
        grid-template-columns: 1fr;
        gap: 3rem;
    }
    .sponsor-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

@media (max-width: 768px) {
    body {
        padding-bottom: 80px;
    }
    .header-container {
        flex-direction: column;
        gap: 1rem;
    }
    .header-nav {
        gap: 1rem;
    }
    .hero-title {
        font-size: 2.2rem;
    }
    .hero-stripe {
        display: none;
    }
    .advisor-grid {
        grid-template-columns: 1fr;
    }
    .accordion-header {
        flex-wrap: wrap;
        gap: 0.5rem;
        padding: 1.2rem;
    }
    .theme-number {
        border: none;
        padding: 0;
        margin: 0;
    }
    .theme-lecturer {
        margin: 0;
    }
    .player-container {
        padding: 0 1rem;
    }
    .player-info {
        display: none;
    }
    .player-controls {
        width: 100%;
    }
    .player-volume {
        display: none;
    }
    .game-card {
        grid-template-columns: 1fr;
    }
    .game-image {
        min-height: 250px;
    }
    .game-info {
        padding: 2rem;
    }
    .sponsor-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    .footer-container {
        grid-template-columns: 1fr;
        gap: 2rem;
        text-align: left;
    }
    .footer-right {
        text-align: left;
    }
}