:root {
    --primary-dark: #1a1a1a;
    --secondary-gray: #4a4a4a;
    --accent-gold: #b8860b;
    --text-dark: #2c2c2c;
}

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

body {
    font-family: 'Noto Sans SC', sans-serif;
    color: var(--text-dark);
    overflow-x: hidden;
}

.font-serif {
    font-family: 'Noto Serif SC', serif;
}

.gradient-text {
    background: linear-gradient(45deg, var(--accent-gold), #d4af37);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.nav-link {
    position: relative;
    transition: color 0.3s ease;
}

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

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

.precision-line {
    height: 2px;
    background: linear-gradient(90deg, transparent, var(--accent-gold), transparent);
}

/* Full Screen Video Hero */
.video-hero {
    position: relative;
    width: 100vw;
    height: 100vh;
    overflow: hidden;
}

.video-background {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, #1a1a1a 0%, #4a4a4a 100%);
}

.video-background::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('/css/img/index.jpg') center/cover no-repeat;
    background-size: cover;
    /*animation: ken-burns 20s ease-in-out infinite alternate;*/
}

.video-background::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    /*background: linear-gradient(135deg, rgba(26,26,26,0.7) 0%, rgba(74,74,74,0.5) 100%);±ä°µ*/
}

@keyframes ken-burns {
    0% {
        transform: scale(1) translateX(0);
    }
    100% {
        transform: scale(1.1) translateX(-2%);
    }
}

/* Video Overlay Content */
.video-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    text-align: center;
    color: white;
    z-index: 10;
    padding: 2rem;
}

.hero-title {
    font-size: clamp(3rem, 8vw, 6rem);
    font-weight: 700;
    margin-bottom: 2rem;
    line-height: 1.1;
    text-shadow: 0 4px 20px rgba(0,0,0,0.5);
    animation: fadeInUp 1s ease-out;
}

.hero-subtitle {
    font-size: clamp(1.25rem, 3vw, 2rem);
    margin-bottom: 3rem;
    color: rgba(255,255,255,0.9);
    text-shadow: 0 2px 10px rgba(0,0,0,0.5);
    animation: fadeInUp 1s ease-out 0.3s both;
}

.hero-description {
    font-size: clamp(1rem, 2vw, 1.25rem);
    max-width: 800px;
    margin-bottom: 4rem;
    color: rgba(255,255,255,0.8);
    text-shadow: 0 2px 8px rgba(0,0,0,0.5);
    animation: fadeInUp 1s ease-out 0.6s both;
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* CTA Buttons */
.cta-buttons {
    display: flex;
    gap: 2rem;
    flex-wrap: wrap;
    justify-content: center;
    animation: fadeInUp 1s ease-out 0.9s both;
}

.cta-primary {
    background: linear-gradient(145deg, var(--accent-gold), #d4af37);
    color: white;
    padding: 1rem 2.5rem;
    border-radius: 50px;
    font-weight: 600;
    font-size: 1.125rem;
    text-decoration: none;
    transition: all 0.3s ease;
    box-shadow: 0 8px 25px rgba(184, 134, 11, 0.3);
    border: none;
    cursor: pointer;
}

.cta-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 12px 35px rgba(184, 134, 11, 0.4);
    background: linear-gradient(145deg, #d4af37, var(--accent-gold));
}

.cta-secondary {
    background: rgba(255,255,255,0.1);
    color: white;
    padding: 1rem 2.5rem;
    border-radius: 50px;
    font-weight: 600;
    font-size: 1.125rem;
    text-decoration: none;
    transition: all 0.3s ease;
    border: 2px solid rgba(255,255,255,0.3);
    backdrop-filter: blur(10px);
}

.cta-secondary:hover {
    background: rgba(255,255,255,0.2);
    border-color: rgba(255,255,255,0.5);
    transform: translateY(-3px);
}

/* Video Hotspots */
.video-hotspot {
    position: absolute;
    width: 20px;
    height: 20px;
    cursor: pointer;
    z-index: 20;
}

.hotspot-ring {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 40px;
    height: 40px;
    border: 2px solid var(--accent-gold);
    border-radius: 50%;
    opacity: 0.7;
    animation: pulse-ring 2s ease-in-out infinite;
}

.hotspot-core {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 12px;
    height: 12px;
    background: var(--accent-gold);
    border-radius: 50%;
    animation: pulse-core 2s ease-in-out infinite;
}

@keyframes pulse-ring {
    0% {
        transform: translate(-50%, -50%) scale(0.8);
        opacity: 0.7;
    }
    50% {
        transform: translate(-50%, -50%) scale(1.2);
        opacity: 0.3;
    }
    100% {
        transform: translate(-50%, -50%) scale(0.8);
        opacity: 0.7;
    }
}

@keyframes pulse-core {
    0% {
        transform: translate(-50%, -50%) scale(1);
        opacity: 1;
    }
    50% {
        transform: translate(-50%, -50%) scale(1.3);
        opacity: 0.7;
    }
    100% {
        transform: translate(-50%, -50%) scale(1);
        opacity: 1;
    }
}

.video-hotspot:hover .hotspot-ring {
    animation: none;
    transform: translate(-50%, -50%) scale(1.3);
    opacity: 1;
}

.video-hotspot:hover .hotspot-core {
    animation: none;
    transform: translate(-50%, -50%) scale(1.5);
    background: #ffd700;
}

/* Hotspot Tooltip */
.hotspot-tooltip {
    position: absolute;
    bottom: 150%;
    left: 50%;
    transform: translateX(-50%);
    background: rgba(26, 26, 26, 0.95);
    color: white;
    padding: 12px 16px;
    border-radius: 8px;
    font-size: 0.875rem;
    white-space: nowrap;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
    z-index: 30;
    pointer-events: none;
}

.hotspot-tooltip::after {
    content: '';
    position: absolute;
    top: 100%;
    left: 50%;
    transform: translateX(-50%);
    border: 6px solid transparent;
    border-top-color: rgba(26, 26, 26, 0.95);
}

.video-hotspot:hover .hotspot-tooltip {
    opacity: 1;
    visibility: visible;
    transform: translateX(-50%) translateY(-5px);
}

/* Floating Elements */
.floating-elements {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 5;
}

.floating-element {
    position: absolute;
    background: rgba(184, 134, 11, 0.1);
    border: 1px solid rgba(184, 134, 11, 0.3);
    border-radius: 50%;
    animation: float 6s ease-in-out infinite;
}

.floating-element:nth-child(1) {
    width: 80px;
    height: 80px;
    top: 20%;
    left: 10%;
    animation-delay: 0s;
}

.floating-element:nth-child(2) {
    width: 60px;
    height: 60px;
    top: 60%;
    right: 15%;
    animation-delay: 2s;
}

.floating-element:nth-child(3) {
    width: 100px;
    height: 100px;
    bottom: 20%;
    left: 20%;
    animation-delay: 4s;
}

@keyframes float {
    0%, 100% {
        transform: translateY(0px) rotate(0deg);
        opacity: 0.3;
    }
    50% {
        transform: translateY(-20px) rotate(180deg);
        opacity: 0.7;
    }
}

/* Scroll Indicator */
.scroll-indicator {
    position: absolute;
    bottom: 3rem;
    left: 50%;
    transform: translateX(-50%);
    color: rgba(255,255,255,0.7);
    text-align: center;
    z-index: 20;
    animation: bounce 2s infinite;
}

@keyframes bounce {
    0%, 20%, 50%, 80%, 100% {
        transform: translateX(-50%) translateY(0);
    }
    40% {
        transform: translateX(-50%) translateY(-10px);
    }
    60% {
        transform: translateX(-50%) translateY(-5px);
    }
}

/* Navigation */
.main-nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: rgba(255,255,255,0.95);
    backdrop-filter: blur(10px);
    z-index: 1000;
    border-bottom: 1px solid rgba(0,0,0,0.1);
}

.nav-link {
    position: relative;
    transition: color 0.3s ease;
    text-decoration: none;
    color: var(--text-dark);
}

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

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

/* Content Sections */
.content-section {
    padding: 5rem 0;
}

.section-title {
    font-size: 3rem;
    font-weight: 700;
    text-align: center;
    margin-bottom: 1rem;
}

.section-subtitle {
    font-size: 1.25rem;
    text-align: center;
    color: #6b7280;
    margin-bottom: 4rem;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

/* Responsive Design */
@media (max-width: 768px) {
    .cta-buttons {
        flex-direction: column;
        align-items: center;
    }
    
    .cta-primary,
    .cta-secondary {
        width: 100%;
        max-width: 300px;
        text-align: center;
    }
    
    .floating-element {
        display: none;
    }
    
    .scroll-indicator {
        bottom: 2rem;
    }
}

/* Animations */
.fade-in {
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.8s ease;
}

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

.stagger-item {
    opacity: 0;
    transform: translateY(20px);
}

.stagger-item.revealed {
    opacity: 1;
    transform: translateY(0);
    transition: all 0.6s ease;
}