/* ============================================
   SAGE EMPIRE — Hub Landing Page Styles
   Animated star field, glowing room cards
   ============================================ */

.hub-body {
    background: var(--deep-space);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    position: relative;
    overflow: hidden;
}

/* ============================================
   STAR FIELD — CSS-only animated background
   ============================================ */
.star-field {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 0;
}

.star {
    position: absolute;
    width: 2px;
    height: 2px;
    background: var(--aetherium-gold);
    border-radius: 50%;
    opacity: 0;
    animation: twinkle var(--duration) ease-in-out infinite;
    animation-delay: var(--delay);
}

@keyframes twinkle {
    0%, 100% { opacity: 0; transform: scale(0.5); }
    50% { opacity: var(--brightness); transform: scale(1); }
}

/* ============================================
   HUB CONTENT
   ============================================ */
.hub-content {
    position: relative;
    z-index: 1;
    flex: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 2rem 2rem 4rem 2rem;
    min-height: calc(100vh - 60px);
}

/* ============================================
   TITLE SECTION
   ============================================ */
.hub-title-section {
    text-align: center;
    margin-bottom: 1.5rem;
}

.hub-title {
    font-size: clamp(2rem, 6vw, 4rem);
    color: var(--aetherium-gold);
    letter-spacing: 8px;
    text-transform: uppercase;
    font-weight: 300;
    text-shadow: 0 0 40px rgba(197, 160, 89, 0.3);
    margin-bottom: 0.5rem;
    animation: titleGlow 4s ease-in-out infinite;
}

@keyframes titleGlow {
    0%, 100% { text-shadow: 0 0 40px rgba(197, 160, 89, 0.3); }
    50% { text-shadow: 0 0 60px rgba(197, 160, 89, 0.5), 0 0 100px rgba(197, 160, 89, 0.2); }
}

.hub-subtitle {
    font-size: clamp(0.9rem, 2vw, 1.3rem);
    color: rgba(245, 245, 245, 0.6);
    letter-spacing: 4px;
    text-transform: uppercase;
    font-weight: 300;
}

.hub-divider {
    width: 100px;
    height: 1px;
    background: var(--aetherium-gold);
    margin: 1.5rem auto;
    opacity: 0.5;
}

/* ============================================
   ROOM GRID
   ============================================ */
.hub-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
    max-width: 900px;
    width: 100%;
    margin-bottom: 2rem;
}

.room-card {
    position: relative;
    background: rgba(17, 18, 22, 0.8);
    border: 1px solid rgba(197, 160, 89, 0.2);
    border-radius: 12px;
    padding: 2rem 1rem;
    text-align: center;
    text-decoration: none;
    color: var(--clean-white);
    transition: all 0.4s ease;
    overflow: hidden;
    cursor: pointer;
}

.room-card:hover {
    transform: translateY(-8px) scale(1.02);
    border-color: var(--aetherium-gold);
    box-shadow: 0 0 40px rgba(197, 160, 89, 0.2);
}

.room-card:hover .room-glow {
    opacity: 1;
}

.room-card:hover .room-icon {
    transform: scale(1.2);
}

.room-glow {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: radial-gradient(circle at center, rgba(197, 160, 89, 0.1) 0%, transparent 70%);
    opacity: 0;
    transition: opacity 0.4s ease;
    pointer-events: none;
}

.room-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
    transition: transform 0.4s ease;
    display: block;
}

.room-name {
    font-size: 1.1rem;
    color: var(--aetherium-gold);
    text-transform: uppercase;
    letter-spacing: 2px;
    font-weight: bold;
    margin-bottom: 0.3rem;
}

.room-desc {
    font-size: 0.8rem;
    color: rgba(245, 245, 245, 0.5);
    letter-spacing: 1px;
}

.external-badge {
    position: absolute;
    top: 0.5rem;
    right: 0.5rem;
    font-size: 0.8rem;
    color: var(--aetherium-gold);
    opacity: 0.5;
}

/* ============================================
   BOTTOM TICKER
   ============================================ */
.hub-ticker {
    position: relative;
    z-index: 1;
    background: rgba(11, 12, 16, 0.9);
    border-top: 1px solid rgba(197, 160, 89, 0.2);
    padding: 1rem 0;
    overflow: hidden;
    height: 50px;
    display: flex;
    align-items: center;
}

.ticker-content {
    display: flex;
    gap: 2rem;
    white-space: nowrap;
    animation: ticker 30s linear infinite;
    padding-left: 100%;
}

.ticker-content span {
    color: var(--aetherium-gold);
    font-size: 0.85rem;
    letter-spacing: 2px;
    text-transform: uppercase;
}

.ticker-sep {
    opacity: 0.3;
}

@keyframes ticker {
    0% { transform: translateX(0); }
    100% { transform: translateX(-100%); }
}

/* ============================================
   RESPONSIVE
   ============================================ */
@media (max-width: 768px) {
    .hub-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 1rem;
    }
    .room-card {
        padding: 1.5rem 0.75rem;
    }
    .room-icon {
        font-size: 2.5rem;
    }
    .room-name {
        font-size: 0.9rem;
    }
    .hub-title {
        letter-spacing: 4px;
    }
}

@media (max-width: 480px) {
    .hub-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 0.75rem;
    }
    .room-card {
        padding: 1rem 0.5rem;
    }
    .room-icon {
        font-size: 2rem;
    }
    .room-name {
        font-size: 0.8rem;
        letter-spacing: 1px;
    }
    .room-desc {
        font-size: 0.7rem;
    }
    .hub-content {
        padding: 1rem;
    }
}