/* 
======================================================
  Design System & Variables
======================================================
*/
:root {
    /* Colors / Theming */
    --color-bg-dark: #0a0a0e;
    --color-card-bg: rgba(20, 20, 25, 0.6);
    --color-card-border: rgba(255, 255, 255, 0.08);
    --color-card-hover-bg: rgba(30, 30, 40, 0.8);
    --color-card-hover-border: rgba(255, 255, 255, 0.2);
    
    --color-text-main: #f0f0f5;
    --color-text-muted: #9ca3af;
    
    --color-accent-1: #00f0ff; /* Neon Blue */
    --color-accent-2: #8a2be2; /* Electric Purple */
    --color-accent-3: #ff0055; /* Neon Pink */
    
    /* Private/Public Badges */
    --color-badge-private-bg: rgba(138, 43, 226, 0.15);
    --color-badge-private-text: #c084fc;
    --color-badge-private-border: rgba(138, 43, 226, 0.4);
    
    --color-badge-public-bg: rgba(0, 240, 255, 0.15);
    --color-badge-public-text: #67e8f9;
    --color-badge-public-border: rgba(0, 240, 255, 0.4);

    /* Spacing Tokens */
    --space-1: 4px;
    --space-2: 8px;
    --space-3: 16px;
    --space-4: 24px;
    --space-5: 32px;
    --space-6: 48px;
    --space-7: 64px;
    --space-8: 96px;

    /* Typography */
    --font-heading: 'Outfit', sans-serif;
    --font-body: 'Noto Sans JP', sans-serif;
}

/* 
======================================================
  Base Styles
======================================================
*/
* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

body {
    background-color: var(--color-bg-dark);
    color: var(--color-text-main);
    font-family: var(--font-body);
    line-height: 1.6;
    overflow-x: hidden;
    position: relative;
    min-height: 100vh;
}

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

/* 
======================================================
  Background Effects (DESIGN x IT x AI vibe)
======================================================
*/
.background-effects {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    z-index: -1;
    overflow: hidden;
    pointer-events: none;
}

.orb {
    position: absolute;
    border-radius: 50%;
    filter: blur(120px);
    opacity: 0.5;
    animation: floatOrb 20s infinite ease-in-out alternate;
}

.orb-1 {
    top: -10%;
    left: -10%;
    width: 50vw;
    height: 50vw;
    background: radial-gradient(circle, rgba(138,43,226,0.3) 0%, rgba(0,0,0,0) 70%);
}

.orb-2 {
    bottom: -10%;
    right: -10%;
    width: 60vw;
    height: 60vw;
    background: radial-gradient(circle, rgba(0,240,255,0.2) 0%, rgba(0,0,0,0) 70%);
    animation-delay: -10s;
}

.grid-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: 
        linear-gradient(to right, rgba(255,255,255,0.03) 1px, transparent 1px),
        linear-gradient(to bottom, rgba(255,255,255,0.03) 1px, transparent 1px);
    background-size: 60px 60px;
    mask-image: radial-gradient(circle at center, black 40%, transparent 100%);
    -webkit-mask-image: radial-gradient(circle at center, black 40%, transparent 100%);
}

@keyframes floatOrb {
    0% { transform: translate(0, 0) scale(1); }
    100% { transform: translate(10%, 10%) scale(1.1); }
}

/* 
======================================================
  Layout
======================================================
*/
.page-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: var(--space-6) var(--space-4);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

/* 
======================================================
  Hero Section
======================================================
*/
.hero {
    text-align: center;
    margin-bottom: var(--space-8);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-4);
    animation: fadeInDown 1s ease-out forwards;
}

.company-badge {
    display: inline-block;
    padding: var(--space-1) var(--space-3);
    border-radius: 20px;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    font-family: var(--font-heading);
    font-weight: 600;
    font-size: 0.875rem;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--color-text-muted);
}

.hero-title {
    font-family: var(--font-heading);
    font-size: clamp(2.5rem, 6vw, 5rem);
    font-weight: 800;
    line-height: 1.1;
    letter-spacing: -0.02em;
}

.gradient-text {
    background: linear-gradient(135deg, #fff 0%, #a5b4fc 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.cross {
    color: var(--color-text-muted);
    font-size: 0.6em;
    font-weight: 300;
    vertical-align: middle;
    margin: 0 var(--space-2);
    opacity: 0.5;
}

.hero-title .gradient-text:nth-child(1) {
    background: linear-gradient(135deg, #f0f0f5 0%, #9ca3af 100%);
    -webkit-background-clip: text; text-fill-color: transparent;
}
.hero-title .gradient-text:nth-child(3) {
    background: linear-gradient(135deg, var(--color-accent-1) 0%, #3b82f6 100%);
    -webkit-background-clip: text; -webkit-text-fill-color: transparent;
}
.hero-title .gradient-text:nth-child(5) {
    background: linear-gradient(135deg, var(--color-accent-2) 0%, var(--color-accent-3) 100%);
    -webkit-background-clip: text; -webkit-text-fill-color: transparent;
}

.hero-subtitle {
    font-family: var(--font-heading);
    font-size: 1.25rem;
    font-weight: 400;
    letter-spacing: 0.2em;
    color: var(--color-text-main);
    text-transform: uppercase;
}

.hero-description {
    color: var(--color-text-muted);
    font-size: 1rem;
    max-width: 600px;
}

.desktop-br {
    display: none;
}
@media (min-width: 768px) {
    .desktop-br { display: inline; }
}

/* 
======================================================
  App Grid & Cards
======================================================
*/
.app-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: var(--space-5);
    flex-grow: 1;
}

.app-card {
    background: var(--color-card-bg);
    border: 1px solid var(--color-card-border);
    border-radius: 16px;
    padding: var(--space-5);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    transition: all 0.4s cubic-bezier(0.25, 0.8, 0.25, 1);
    position: relative;
    overflow: hidden;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    opacity: 0;
    transform: translateY(20px);
}

.app-card.visible {
    opacity: 1;
    transform: translateY(0);
}

.app-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(180deg, rgba(255,255,255,0.05) 0%, rgba(255,255,255,0) 100%);
    opacity: 0;
    transition: opacity 0.4s ease;
    pointer-events: none;
}

.app-card:hover {
    transform: translateY(-8px);
    background: var(--color-card-hover-bg);
    border-color: var(--color-card-hover-border);
    box-shadow: 0 20px 40px rgba(0,0,0,0.4),
                0 0 40px rgba(0, 240, 255, 0.05);
}

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

.card-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: var(--space-4);
}

.card-title {
    font-family: var(--font-heading);
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--color-text-main);
    line-height: 1.2;
}

.badge {
    font-size: 0.75rem;
    font-weight: 700;
    padding: var(--space-1) var(--space-2);
    border-radius: 6px;
    letter-spacing: 0.05em;
    text-transform: uppercase;
}

.badge-private {
    background: var(--color-badge-private-bg);
    color: var(--color-badge-private-text);
    border: 1px solid var(--color-badge-private-border);
    box-shadow: 0 0 10px rgba(138, 43, 226, 0.2);
}

.badge-public {
    background: var(--color-badge-public-bg);
    color: var(--color-badge-public-text);
    border: 1px solid var(--color-badge-public-border);
    box-shadow: 0 0 10px rgba(0, 240, 255, 0.2);
}

.model-badge {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    font-size: 0.75rem;
    color: var(--color-text-main);
    background: rgba(255, 255, 255, 0.08);
    padding: 4px 8px;
    border-radius: 4px;
    margin-bottom: var(--space-3);
    font-weight: 500;
}

.model-badge span {
    color: var(--color-text-muted);
    font-size: 0.65rem;
    text-transform: uppercase;
}

.card-desc {
    color: var(--color-text-muted);
    font-size: 0.95rem;
    margin-bottom: var(--space-5);
    line-height: 1.5;
    flex-grow: 1;
}

.card-footer {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    color: var(--color-text-main);
    font-weight: 600;
    font-size: 0.9rem;
    transition: color 0.3s ease;
}

.app-card:hover .card-footer {
    color: var(--color-accent-1);
}

.launch-icon {
    width: 16px;
    height: 16px;
    transition: transform 0.3s ease;
}

.app-card:hover .launch-icon {
    transform: translate(2px, -2px);
}

/* 
======================================================
  Footer
======================================================
*/
footer {
    margin-top: var(--space-8);
    text-align: center;
    padding-top: var(--space-4);
    border-top: 1px solid rgba(255, 255, 255, 0.05);
}

.copyright {
    color: var(--color-text-muted);
    font-size: 0.85rem;
}

/* 
======================================================
  Animations
======================================================
*/
@keyframes fadeInDown {
    from {
        opacity: 0;
        transform: translateY(-30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}