:root {
    /* Swiss Modernist Color Palette - Premium Upgrade */
    --color-bg: #0a0c0e;
    --color-surface: #121417;
    --color-text: #ffffff;
    --color-accent: #ff3e00;
    --color-border: #222222;
    --color-border-muted: #1a1a1a;
    --color-muted: #888888;

    /* Typography System */
    --font-main: 'Pretendard Variable', 'Inter', -apple-system, sans-serif;
    --letter-spacing-tight: -0.05em;
    --letter-spacing-wide: 0.15em;

    /* Layout & Animation */
    --container-padding: clamp(20px, 6vh, 40px) 24px;
    --transition-speed: 0.4s;
    --ease-swiss: cubic-bezier(0.23, 1, 0.32, 1);
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }

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

@keyframes noiseAnimation {
    0% {
        transform: translate(0, 0);
    }

    10% {
        transform: translate(-5%, -5%);
    }

    20% {
        transform: translate(-10%, 5%);
    }

    30% {
        transform: translate(5%, -10%);
    }

    40% {
        transform: translate(-5%, 15%);
    }

    50% {
        transform: translate(-10%, 5%);
    }

    60% {
        transform: translate(15%, 0);
    }

    70% {
        transform: translate(0, 10%);
    }

    80% {
        transform: translate(-15%, 0);
    }

    90% {
        transform: translate(10%, 5%);
    }

    100% {
        transform: translate(5%, 0);
    }
}

* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
    -webkit-tap-highlight-color: transparent;
}

html {
    background-color: #000000;
}

body {
    max-width: 500px;
    margin: 0 auto;
    min-height: 100vh;
    background-color: var(--color-bg);
    position: relative;
    overflow-x: hidden;
    color: var(--color-text);
    font-family: var(--font-main);
    line-height: 1.1;
    -webkit-user-select: none;
    user-select: none;
    -webkit-font-smoothing: antialiased;
    box-shadow: 0 0 100px rgba(0, 0, 0, 1);
    border-left: 1px solid var(--color-border-muted);
    border-right: 1px solid var(--color-border-muted);
}

/* Premium Noise Grain */
body::before {
    content: "";
    position: fixed;
    top: -100%;
    left: -100%;
    width: 300%;
    height: 300%;
    background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 200 200' xmlns='http://www.w3.org/2000/svg'%3BaseFilter id='noiseFilter'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.65' numOctaves='3' stitchTiles='stitch'/%3E%3C/baseFilter%3E%3Crect width='100%25' height='100%25' filter='url(%23noiseFilter)'/%3E%3C/svg%3E");
    opacity: 0.04;
    pointer-events: none;
    animation: noiseAnimation 8s steps(10) infinite;
    z-index: 9999;
}

/* Radial Glow Gradient */
body::after {
    content: "";
    position: fixed;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 100%;
    max-width: 500px;
    height: 100%;
    background: radial-gradient(circle at 50% 0%, rgba(255, 62, 0, 0.05) 0%, transparent 70%);
    pointer-events: none;
    z-index: 1;
}

.swiss-container {
    padding: var(--container-padding);
    position: relative;
    z-index: 2;
    opacity: 0;
    animation: fadeInUp 1s var(--ease-swiss) forwards;
}

/* System Status Bar - Tech Precision */
.system-status {
    display: grid;
    grid-template-columns: 1fr 1fr;
    padding: 12px 0;
    border-bottom: 1px solid var(--color-border);
    margin-bottom: clamp(20px, 5vh, 40px);
    font-size: clamp(8px, 2vw, 10px);
    font-weight: 800;
    letter-spacing: var(--letter-spacing-wide);
    color: var(--color-muted);
    text-transform: uppercase;
}

.status-left {
    display: flex;
    gap: 12px;
}

.status-right {
    display: flex;
    justify-content: flex-end;
    gap: 12px;
}

.status-item {
    color: var(--color-text);
    position: relative;
}

#real-time {
    color: var(--color-accent);
    font-variant-numeric: tabular-nums;
}

/* Header Section - Bold Identity */
header {
    margin-bottom: 64px;
    cursor: pointer;
}

.hero-subtitle {
    font-size: 11px;
    color: var(--color-accent);
    text-transform: uppercase;
    letter-spacing: 0.5em;
    font-weight: 800;
    margin-bottom: 8px;
}

.hero-title {
    font-size: clamp(40px, 14vw, 64px);
    font-weight: 950;
    text-transform: uppercase;
    letter-spacing: var(--letter-spacing-tight);
    line-height: 0.8;
    margin-left: -3px;
    transition: transform var(--transition-speed) var(--ease-swiss);
}

header:hover .hero-title {
    transform: skewX(-2deg);
}

/* App List - Grid Professionalism */
#appListCon {
    display: flex;
    flex-direction: column;
    border-top: 1px solid var(--color-text);
}

.app-item {
    position: relative;
    min-height: clamp(80px, 12vh, 100px);
    border-bottom: 1px solid var(--color-border);
    padding: 1.5rem 0;
    display: grid;
    grid-template-columns: minmax(30px, 40px) minmax(32px, 48px) 1fr;
    align-items: center;
    gap: 0.5rem;
    cursor: pointer;
    transition: all var(--transition-speed) var(--ease-swiss);
}

.app-item::before {
    content: "";
    position: absolute;
    left: 0;
    top: 0;
    width: 0;
    height: 100%;
    background-color: var(--color-accent);
    transition: width 0.3s var(--ease-swiss);
    z-index: -1;
}

.app-item:hover {
    padding-left: 20px;
    color: var(--color-text);
}

.app-item:hover::before {
    width: 4px;
}

.app-index {
    font-size: clamp(10px, 3vw, 12px);
    font-weight: 800;
    color: var(--color-muted);
    opacity: 0.5;
}

.app-item .icon {
    width: clamp(22px, 6vw, 32px);
    height: clamp(22px, 6vw, 32px);
    color: var(--color-text);
    transition: all var(--transition-speed) var(--ease-swiss);
}

.app-item:hover .icon {
    color: var(--color-accent);
    transform: scale(1.1) rotate(-5deg);
    opacity: 1;
}

.app-name {
    font-size: clamp(20px, 6vw, 28px);
    font-weight: 950;
    text-transform: uppercase;
    letter-spacing: var(--letter-spacing-tight);
    line-height: 1;
}

.app-info {
    display: flex;
    align-items: center;
    justify-content: space-between;
    width: 100%;
}

/* Maintenance Badge - Dynamic Warning */
.maintenance-badge {
    background: transparent;
    color: var(--color-accent);
    padding: 4px 10px;
    font-size: 10px;
    font-weight: 900;
    text-transform: uppercase;
    border: 1px solid var(--color-accent);
    margin-left: auto;
    letter-spacing: 0.1em;
    display: flex;
    align-items: center;
    gap: 6px;
}

.maintenance-badge::before {
    content: '';
    width: 4px;
    height: 4px;
    background-color: var(--color-accent);
    border-radius: 50%;
    animation: strobe 1s infinite;
}

@keyframes strobe {

    0%,
    100% {
        opacity: 1;
        transform: scale(1);
    }

    50% {
        opacity: 0.3;
        transform: scale(1.5);
    }
}

/* Action Grid: APK + External Links Combined */
.action-section {
    margin-top: 48px;
}

.action-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1px;
    background-color: var(--color-border);
    border: 1px solid var(--color-border);
}

.action-item {
    height: 64px;
    background-color: var(--color-bg);
    display: flex;
    align-items: center;
    padding: 0 16px;
    gap: 12px;
    color: var(--color-text);
    text-decoration: none;
    transition: all var(--transition-speed) var(--ease-swiss);
}

.action-item.highlight {
    grid-column: span 2;
    background-color: var(--color-surface);
    border-bottom: 1px solid var(--color-border);
}

.action-item .icon {
    width: clamp(22px, 6vw, 26px);
    height: clamp(22px, 6vw, 26px);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-muted);
    transition: all var(--transition-speed) var(--ease-swiss);
    flex-shrink: 0;
}

.action-item .icon svg {
    width: 100%;
    height: 100%;
}

.action-item.highlight .icon {
    color: var(--color-accent);
    width: clamp(28px, 8vw, 32px);
    height: clamp(28px, 8vw, 32px);
}

.action-label {
    font-size: clamp(9px, 2.5vw, 11px);
    font-weight: 800;
    letter-spacing: 0.05em;
    text-transform: uppercase;
    word-break: keep-all;
}

.action-item.highlight .action-label {
    font-size: clamp(11px, 3vw, 13px);
    color: var(--color-accent);
}

.action-item:hover {
    background-color: var(--color-surface);
}

.action-item:hover .icon {
    color: var(--color-accent);
    transform: translateY(-2px);
}

.action-item:hover .action-label {
    color: var(--color-accent);
}

/* Footer Section */
.swiss-footer {
    margin-top: clamp(40px, 10vh, 80px);
    padding-bottom: 60px;
    border-top: 1px solid var(--color-border);
    padding-top: 32px;
}

.footer-info {
    font-size: clamp(7px, 2vw, 9px);
    color: var(--color-muted);
    text-transform: uppercase;
    letter-spacing: 0.15em;
    font-weight: 700;
    margin-bottom: 8px;
}