:root {
    --bg-color: #050510;
    --primary-color: #8a2be2;
    --accent-color: #00bfff;
    --text-color: #e0e0e0;
    --card-bg: rgba(10, 10, 25, 0.5);
    --border-color: rgba(255, 255, 255, 0.1);
}

html { scroll-behavior: smooth; }

body {
    background-color: var(--bg-color);
    color: var(--text-color);
    font-family: 'Inter', 'Noto Sans JP', sans-serif;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    cursor: none;
    text-shadow: 0 0 1px rgba(255, 255, 255, 0.1), 0 0 2px rgba(255, 255, 255, 0.05); /* Subtle glow */
}

#bg-canvas {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
}

/* --- Custom Cursor --- */
#cursor-dot {
    width: 8px;
    height: 8px;
    background-color: var(--accent-color);
    border-radius: 50%;
    position: fixed;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    pointer-events: none;
    z-index: 10000;
    transition: transform 0.1s ease-out;
}
#cursor-outline {
    width: 40px;
    height: 40px;
    border: 2px solid var(--primary-color);
    border-radius: 50%;
    position: fixed;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    pointer-events: none;
    z-index: 10000;
    transition: all 0.2s ease-out;
}
body:hover #cursor-dot, body:hover #cursor-outline { opacity: 1; }
#cursor-outline.hover {
    transform: translate(-50%, -50%) scale(1.5);
    background-color: rgba(138, 43, 226, 0.2);
}

/* --- Custom Scrollbar --- */
::-webkit-scrollbar { width: 8px; }
::-webkit-scrollbar-track { background: var(--bg-color); }
::-webkit-scrollbar-thumb { background: var(--primary-color); border-radius: 10px; }
::-webkit-scrollbar-thumb:hover { background: var(--accent-color); }



/* --- Header --- */
header { transition: background-color 0.3s ease; }
header.scrolled {
    background-color: rgba(5, 5, 16, 0.8);
    backdrop-filter: blur(10px);
}
.nav-link { position: relative; transition: color 0.3s ease, box-shadow 0.3s ease; }
.nav-link::after {
    content: ''; position: absolute; left: 50%; bottom: -4px;
    width: 0; height: 2px; background-color: var(--accent-color);
    transition: all 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);
    transform: translateX(-50%);
}
.nav-link.active::after, .nav-link:hover::after { width: 100%; }
.nav-link.active, .nav-link:hover { 
    color: var(--accent-color);
    box-shadow: 0 0 10px var(--accent-color), 0 0 20px var(--accent-color); /* Digital pulse/glow */
}

/* --- Section Styles --- */
.section-title {
    font-family: 'Inter', sans-serif; /* Changed from Noto Serif JP */
    text-shadow: 0 0 20px var(--primary-color), 0 0 40px var(--primary-color);
    animation: flicker 5s infinite alternate; /* Apply flicker animation */
}

@keyframes flicker {
    0%, 100% { opacity: 1; text-shadow: 0 0 20px var(--primary-color), 0 0 40px var(--primary-color); }
    5% { opacity: 0.95; text-shadow: 0 0 18px var(--primary-color), 0 0 38px var(--primary-color); }
    10% { opacity: 1; text-shadow: 0 0 20px var(--primary-color), 0 0 40px var(--primary-color); }
    15% { opacity: 0.97; text-shadow: 0 0 19px var(--primary-color), 0 0 39px var(--primary-color); }
    20% { opacity: 1; text-shadow: 0 0 20px var(--primary-color), 0 0 40px var(--primary-color); }
    25% { opacity: 0.96; text-shadow: 0 0 18px var(--primary-color), 0 0 38px var(--primary-color); }
    30% { opacity: 1; text-shadow: 0 0 20px var(--primary-color), 0 0 40px var(--primary-color); }
    35% { opacity: 0.98; text-shadow: 0 0 19px var(--primary-color), 0 0 39px var(--primary-color); }
    40% { opacity: 1; text-shadow: 0 0 20px var(--primary-color), 0 0 40px var(--primary-color); }
    45% { opacity: 0.95; text-shadow: 0 0 18px var(--primary-color), 0 0 38px var(--primary-color); }
    50% { opacity: 1; text-shadow: 0 0 20px var(--primary-color), 0 0 40px var(--primary-color); }
    55% { opacity: 0.97; text-shadow: 0 0 19px var(--primary-color), 0 0 39px var(--primary-color); }
    60% { opacity: 1; text-shadow: 0 0 20px var(--primary-color), 0 0 40px var(--primary-color); }
    65% { opacity: 0.96; text-shadow: 0 0 18px var(--primary-color), 0 0 38px var(--primary-color); }
    70% { opacity: 1; text-shadow: 0 0 20px var(--primary-color), 0 0 40px var(--primary-color); }
    75% { opacity: 0.98; text-shadow: 0 0 19px var(--primary-color), 0 0 39px var(--primary-color); }
    80% { opacity: 1; text-shadow: 0 0 20px var(--primary-color), 0 0 40px var(--primary-color); }
    85% { opacity: 0.95; text-shadow: 0 0 18px var(--primary-color), 0 0 38px var(--primary-color); }
    90% { opacity: 1; text-shadow: 0 0 20px var(--primary-color), 0 0 40px var(--primary-color); }
    95% { opacity: 0.97; text-shadow: 0 0 19px var(--primary-color), 0 0 39px var(--primary-color); }
}

/* --- Profile Cards --- */
.profile-card {
    background-color: var(--card-bg);
    border: 1px solid var(--border-color);
    backdrop-filter: blur(10px);
    transition: transform 0.4s ease, box-shadow 0.4s ease;
    position: relative;
    overflow: hidden;
}
.profile-card:hover {
    transform: translateY(-12px) scale(1.02);
    box-shadow: 0 0 40px rgba(138, 43, 226, 0.5);
}
.profile-card .glow {
    position: absolute;
    width: 150px;
    height: 150px;
    background: radial-gradient(circle, rgba(138, 43, 226, 0.3) 0%, rgba(138, 43, 226, 0) 70%);
    border-radius: 50%;
    pointer-events: none;
    opacity: 0;
    transition: opacity 0.3s ease;
    transform: translate(-50%, -50%);
}
.profile-card:hover .glow { opacity: 1; }
.profile-photo { border: 2px solid var(--primary-color); }

/* --- Spotify Embed --- */
.spotify-embed {
    /* border: 1px solid var(--border-color); */ /* Removed border */
    transition: transform 0.4s ease, box-shadow 0.4s ease;
}
.spotify-embed:hover {
    transform: scale(1.02); /* Reduced scale from 1.05 */
    box-shadow: 0 0 25px rgba(0, 191, 255, 0.5);
}

/* --- Note Card --- */
.note-card {
    background-color: var(--card-bg);
    border: 1px solid var(--border-color);
    transition: background-color 0.3s ease;
}
.note-card:hover { background-color: rgba(255, 255, 255, 0.08); }

/* --- Animation --- */
.fade-in-up {
    opacity: 0;
    transform: translateY(40px) scale(0.98); /* Added subtle scale */
    transition: opacity 1s cubic-bezier(0.165, 0.84, 0.44, 1), transform 1s cubic-bezier(0.165, 0.84, 0.44, 1);
}
.fade-in-up.visible { opacity: 1; transform: translateY(0) scale(1); } /* Transition to scale 1 */

/* Glitch Effect */
.glitch {
    position: relative;
    display: inline-block;
    color: var(--text-color); /* Adjust as needed */
    /* overflow: hidden; */ /* Removed overflow hidden */
}

.glitch.glitch-active::before,
.glitch.glitch-active::after {
    content: attr(data-text);
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    /* background: var(--bg-color); */ /* Removed background */
    /* overflow: hidden; */ /* Removed overflow hidden */
    /* clip: rect(0, 900px, 0, 0); */ /* Removed clip */
    opacity: 0.8; /* Subtle opacity change */
}

.glitch.glitch-active::before {
    left: -1px; /* Subtle shift */
    text-shadow: 1px 0 0 var(--primary-color);
    animation: glitch-anim-subtle-1 0.3s linear infinite alternate-reverse; /* New animation */
}

.glitch.glitch-active::after {
    left: 1px; /* Subtle shift */
    text-shadow: -1px 0 0 var(--accent-color);
    animation: glitch-anim-subtle-2 0.3s linear infinite alternate-reverse; /* New animation */
}

@keyframes glitch-anim-subtle-1 {
    0% { transform: translateX(0.5px) translateY(0.5px); opacity: 0.8; }
    50% { transform: translateX(-0.5px) translateY(-0.5px); opacity: 0.7; }
    100% { transform: translateX(0.5px) translateY(0.5px); opacity: 0.8; }
}

@keyframes glitch-anim-subtle-2 {
    0% { transform: translateX(-0.5px) translateY(-0.5px); opacity: 0.8; }
    50% { transform: translateX(0.5px) translateY(0.5px); opacity: 0.7; }
    100% { transform: translateX(-0.5px) translateY(-0.5px); opacity: 0.8; }
}

/* Glitch on hover for interactive elements */
.glitch-on-hover:hover {
    animation: none; /* Disable original glitch animation */
}
.glitch-on-hover:hover::before {
    animation: glitch-anim-subtle-1 0.3s infinite linear alternate-reverse;
}
/* Glitch on hover for interactive elements */
.glitch-on-hover:hover {
    animation: none; /* Disable original glitch animation */
}
.glitch-on-hover:hover::before {
    animation: glitch-anim-subtle-1 0.3s infinite linear alternate-reverse;
}
.glitch-on-hover:hover::after {
    animation: glitch-anim-subtle-2 0.3s infinite linear alternate-reverse;
}

/* Initial Glitch for Ryuya on Load */
.glitch-initial {
    position: relative;
    display: inline-block;
    color: var(--text-color);
    overflow: hidden; /* Keep overflow hidden for clipping */
}

.glitch-initial::before,
.glitch-initial::after {
    content: attr(data-text);
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--bg-color); /* Cover original text */
    overflow: hidden;
}

.glitch-initial::before {
    left: -2px;
    text-shadow: 1px 0 0 var(--primary-color);
    animation: glitch-initial-anim-1 0.8s linear infinite alternate-reverse;
}

.glitch-initial::after {
    left: 2px;
    text-shadow: -1px 0 0 var(--accent-color);
    animation: glitch-initial-anim-2 0.8s linear infinite alternate-reverse;
}

@keyframes glitch-initial-anim-1 {
    0% {
        clip: rect(30px, 9999px, 10px, 0);
        transform: skew(-0.5deg);
    }
    10% {
        clip: rect(10px, 9999px, 40px, 0);
        transform: skew(0.8deg);
    }
    20% {
        clip: rect(50px, 9999px, 20px, 0);
        transform: skew(-1.2deg);
    }
    30% {
        clip: rect(20px, 9999px, 60px, 0);
        transform: skew(0.3deg);
    }
    40% {
        clip: rect(70px, 9999px, 30px, 0);
        transform: skew(-0.7deg);
    }
    50% {
        clip: rect(40px, 9999px, 80px, 0);
        transform: skew(1.0deg);
    }
    60% {
        clip: rect(90px, 9999px, 50px, 0);
        transform: skew(-0.4deg);
    }
    70% {
        clip: rect(60px, 9999px, 90px, 0);
        transform: skew(0.6deg);
    }
    80% {
        clip: rect(100px, 9999px, 70px, 0);
        transform: skew(-0.9deg);
    }
    90% {
        clip: rect(80px, 9999px, 110px, 0);
        transform: skew(0.2deg);
    }
    100% {
        clip: rect(110px, 9999px, 100px, 0);
        transform: skew(-0.6deg);
    }
}

@keyframes glitch-initial-anim-2 {
    0% {
        clip: rect(10px, 9999px, 30px, 0);
        transform: skew(0.7deg);
    }
    10% {
        clip: rect(40px, 9999px, 10px, 0);
        transform: skew(-0.4deg);
    }
    20% {
        clip: rect(20px, 9999px, 50px, 0);
        transform: skew(1.0deg);
    }
    30% {
        clip: rect(60px, 9999px, 20px, 0);
        transform: skew(-0.8deg);
    }
    40% {
        clip: rect(30px, 9999px, 70px, 0);
        transform: skew(0.5deg);
    }
    50% {
        clip: rect(80px, 9999px, 40px, 0);
        transform: skew(-1.1deg);
    }
    60% {
        clip: rect(50px, 9999px, 90px, 0);
        transform: skew(0.9deg);
    }
    70% {
        clip: rect(90px, 9999px, 60px, 0);
        transform: skew(-0.2deg);
    }
    80% {
        clip: rect(70px, 9999px, 100px, 0);
        transform: skew(0.4deg);
    }
    90% {
        clip: rect(110px, 9999px, 80px, 0);
        transform: skew(-0.6deg);
    }
    100% {
        clip: rect(100px, 9999px, 110px, 0);
        transform: skew(0.3deg);
    }
}

/* Ryuya Title Animation */
.ryuya-char {
    display: inline-block;
    opacity: 0;
    transform: translateY(50px) rotateX(120deg); /* Increased values */
    filter: blur(5px);
    transition: opacity 0.4s ease-out, transform 0.4s ease-out, filter 0.4s ease-out; /* Reduced duration */
    transition-delay: calc(var(--char-index) * 0.04s + 0.3s); /* Adjusted delay */
    font-family: 'Inter', sans-serif; /* 変更 */
}

.ryuya-animate .ryuya-char {
    opacity: 1;
    transform: translateY(0) rotateX(0deg);
    filter: blur(0);
}

/* グリッチエフェクトと組み合わせる場合 */
.ryuya-animate .ryuya-char.glitch-active::before,
.ryuya-animate .ryuya-char.glitch-active::after {
    /* 既存のグリッチアニメーションを適用 */
    animation: glitch-anim-1 0.3s linear infinite alternate-reverse, glitch-anim-2 0.3s linear infinite alternate-reverse;
}

.ryuya-animate {
    animation: dynamic-text-effect 4s infinite alternate; /* Apply the new animation */
}

@keyframes dynamic-text-effect {
    0%, 100% {
        text-shadow: 0 0 10px var(--primary-color), 0 0 20px var(--accent-color);
        transform: translateY(0px);
    }
    25% {
        text-shadow: 0 0 12px var(--primary-color), 0 0 25px var(--accent-color);
        transform: translateY(-1px);
    }
    50% {
        text-shadow: 0 0 10px var(--primary-color), 0 0 20px var(--accent-color);
        transform: translateY(0px);
    }
    75% {
        text-shadow: 0 0 8px var(--primary-color), 0 0 15px var(--accent-color);
        transform: translateY(1px);
    }
}

/* Scanline Overlay */
#scanline-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 9999; /* Below cursor, above background */
    background: repeating-linear-gradient(
        to bottom,
        rgba(0, 0, 0, 0.1),
        rgba(0, 0, 0, 0.1) 1px,
        transparent 1px,
        transparent 2px
    );
}

#main-content {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 1s ease-out, transform 1s ease-out;
}

#main-content.main-content-visible {
    opacity: 1;
    transform: translateY(0);
}