:root {
    --bg-color: #05001a;
    --gold: #00e5ff; /* Cyan as primary accent */
    --gold-light: #ffcc00; /* Yellow for text/highlights */
    --gold-dark: #0055ff; /* Deep blue */
    --text-light: #ffffff;
    --text-dark: #121212;
    --panel-bg: rgba(0, 15, 30, 0.8);
    --panel-border: rgba(0, 229, 255, 0.4);
    --case-bg: linear-gradient(145deg, #001122, #000000);
    --case-border: #ffcc00;
    --case-shadow: 0 0 15px rgba(0, 229, 255, 0.3), inset 0 0 10px rgba(0, 229, 255, 0.1);
    --case-hover: linear-gradient(145deg, #00e5ff, #0055ff);
    --transition: all 0.3s ease;
}

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

body {
    font-family: 'Montserrat', sans-serif;
    background-color: var(--bg-color);
    background-image: radial-gradient(circle at 50% 0%, #001a4d 0%, var(--bg-color) 80%);
    color: var(--text-light);
    min-height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    overflow-x: hidden;
}

/* =========================================================
   LANDING SCREEN (EPIC 3D GAME MENU)
   ========================================================= */
#landing-screen {
    position: fixed;
    top: 0; left: 0; width: 100%; height: 100%;
    display: flex;
    justify-content: center;
    align-items: center;
    background: radial-gradient(circle at center 80%, #002244 0%, #000a1a 50%, #000000 100%);
    z-index: 2000;
    transition: opacity 1s ease, transform 1s ease;
    overflow: hidden;
}

/* Floating Bubbles */
.bubble {
    position: absolute;
    bottom: -15vh; /* Start below the screen */
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.1);
    box-shadow: inset 0 0 10px rgba(255, 255, 255, 0.5), 0 0 5px rgba(255, 255, 255, 0.2);
    border: 1px solid rgba(255, 255, 255, 0.3);
    animation: floatBubble linear infinite;
    opacity: 0;
    z-index: 1;
    pointer-events: none;
}

@keyframes floatBubble {
    0% { transform: translateY(0) scale(0.8); opacity: 0; }
    20% { opacity: 0.8; transform: translateY(-20vh) scale(1) translateX(20px); }
    50% { opacity: 0.9; transform: translateY(-50vh) scale(1.1) translateX(-20px); }
    80% { opacity: 0.7; transform: translateY(-80vh) scale(0.9) translateX(15px); }
    100% { transform: translateY(-120vh) scale(0.8); opacity: 0; }
}

.landing-content {
    position: relative;
    z-index: 2;
    text-align: center;
}

.epic-title {
    font-family: 'Cinzel', serif;
    font-size: 5rem;
    font-weight: 900;
    color: var(--gold);
    text-shadow: 0 0 20px rgba(255, 80, 0, 0.8), 0 5px 5px rgba(0,0,0,0.9);
    letter-spacing: 5px;
    margin-bottom: 10px;
    animation: fadeInDown 1.5s ease;
}

.epic-subtitle {
    font-family: 'Cinzel', serif;
    font-size: 1.5rem;
    letter-spacing: 3px;
    color: #ccc;
    margin-bottom: 60px;
    text-shadow: 0 2px 4px rgba(0,0,0,0.8);
    animation: fadeIn 2s ease;
}

.epic-start-btn {
    font-family: 'Cinzel', serif;
    font-size: 2.5rem;
    font-weight: 900;
    color: #fff;
    background: transparent;
    border: 2px solid var(--gold);
    padding: 20px 60px;
    cursor: pointer;
    text-transform: uppercase;
    letter-spacing: 4px;
    border-radius: 5px;
    box-shadow: 0 0 20px rgba(255, 100, 0, 0.5), inset 0 0 20px rgba(255, 100, 0, 0.3);
    transition: all 0.3s ease;
    animation: pulseEpic 2s infinite;
    position: relative;
    overflow: hidden;
}

.epic-start-btn::before {
    content: '';
    position: absolute;
    top: 0; left: -100%; width: 50%; height: 100%;
    background: linear-gradient(to right, transparent, rgba(255,255,255,0.3), transparent);
    transform: skewX(-20deg);
    transition: all 0.5s ease;
}

.epic-start-btn:hover {
    background: rgba(255, 100, 0, 0.2);
    box-shadow: 0 0 40px rgba(255, 100, 0, 0.8), inset 0 0 30px rgba(255, 100, 0, 0.5);
    text-shadow: 0 0 10px #fff;
    transform: scale(1.05);
}

.epic-start-btn:hover::before {
    left: 200%;
}

@keyframes pulseEpic {
    0% { box-shadow: 0 0 20px rgba(255, 100, 0, 0.4), inset 0 0 10px rgba(255, 100, 0, 0.2); }
    50% { box-shadow: 0 0 40px rgba(255, 100, 0, 0.8), inset 0 0 30px rgba(255, 100, 0, 0.5); }
    100% { box-shadow: 0 0 20px rgba(255, 100, 0, 0.4), inset 0 0 10px rgba(255, 100, 0, 0.2); }
}

/* =========================================================
   GAME SCREEN
   ========================================================= */
#game-screen {
    width: 100%;
    height: 100vh;
    transition: opacity 1s ease;
}

#game-screen.hidden {
    display: none; /* or opacity: 0; pointer-events: none; depending on logic */
}

#game-container {
    width: 100%;
    max-width: 1600px;
    height: 100%;
    display: flex;
    flex-direction: column;
    padding: 20px;
    margin: 0 auto;
}

header {
    text-align: center;
    margin-bottom: 20px;
    animation: fadeInDown 1s ease;
}

#game-container h1 {
    font-family: 'Cinzel', serif;
    font-weight: 900;
    font-size: 2.5rem;
    color: var(--gold);
    text-shadow: 0 0 15px rgba(255, 100, 0, 0.6);
    letter-spacing: 2px;
    margin-bottom: 5px;
}

#game-message {
    font-size: 1.2rem;
    font-weight: 700;
    padding: 8px 20px;
    background: var(--panel-bg);
    border-radius: 5px; /* sharper corners for D3 feel */
    display: inline-block;
    border: 1px solid var(--panel-border);
    backdrop-filter: blur(10px);
    box-shadow: 0 4px 15px rgba(0,0,0,0.8);
}

main {
    display: flex;
    flex-direction: column;
    flex: 1;
    gap: 20px;
    overflow: hidden;
}

/* Center Board */
#center-board {
    flex: 2;
    display: flex;
    flex-direction: column;
    justify-content: center;
}

#cases-grid {
    display: grid;
    grid-template-columns: repeat(9, 1fr);
    gap: 12px;
    padding: 10px;
    align-content: center;
    justify-content: center;
}

/* Koper (Briefcases) */
.case {
    background: var(--case-bg);
    border: 2px solid var(--case-border);
    border-radius: 4px;
    height: 55px;
    display: flex;
    justify-content: center;
    align-items: center;
    font-family: 'Cinzel', serif;
    font-size: 1.4rem;
    font-weight: 900;
    color: #ccc;
    cursor: pointer;
    box-shadow: var(--case-shadow);
    transition: var(--transition);
    position: relative;
    user-select: none;
}

.case::after {
    content: '';
    position: absolute;
    top: 3px; left: 3px; right: 3px; bottom: 3px;
    border: 1px solid rgba(255,150,0,0.1);
    pointer-events: none;
}

.case:hover {
    transform: translateY(-3px) scale(1.05);
    box-shadow: 0 8px 15px rgba(255, 100, 0, 0.5);
    border-color: var(--gold);
    color: #fff;
}

.case.opened {
    opacity: 0.15;
    pointer-events: none;
    transform: scale(0.9);
    filter: grayscale(100%);
}

/* Groups Container */
#groups-container {
    flex: 3;
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: 15px;
    padding: 10px 0;
}

.group-box {
    background: var(--panel-bg);
    border: 1px solid var(--panel-border);
    border-radius: 5px;
    padding: 15px;
    backdrop-filter: blur(5px);
    box-shadow: 0 5px 15px rgba(0,0,0,0.6);
    display: flex;
    flex-direction: column;
    height: 100%;
    position: relative;
}

.group-box::before {
    content: '';
    position: absolute;
    top: 0; left: 0; right: 0; height: 2px;
    background: linear-gradient(90deg, transparent, var(--gold), transparent);
}

.group-box h3 {
    text-align: center;
    font-family: 'Cinzel', serif;
    color: var(--gold-light);
    margin-bottom: 10px;
    padding-bottom: 10px;
    border-bottom: 1px solid rgba(255, 170, 0, 0.2);
    font-size: 1.3rem;
    letter-spacing: 1px;
}

.group-list {
    list-style: none;
    flex: 1;
    overflow-y: auto;
}

.group-list li {
    background: rgba(255,255,255,0.03);
    padding: 8px 10px;
    margin-bottom: 5px;
    border-radius: 3px;
    font-size: 0.85rem;
    font-weight: 700;
    border-left: 3px solid var(--gold-dark);
    animation: fadeIn 0.5s ease;
}

/* Modals */
.modal {
    position: fixed;
    top: 0; left: 0; width: 100%; height: 100%;
    background: rgba(0, 0, 0, 0.85);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 1000;
    backdrop-filter: blur(5px);
    opacity: 1;
    transition: var(--transition);
}

.modal.hidden {
    opacity: 0;
    pointer-events: none;
}

.glass-panel {
    background: rgba(15, 5, 0, 0.95);
    border: 2px solid var(--gold-dark);
    border-radius: 5px;
    padding: 40px;
    text-align: center;
    box-shadow: 0 15px 50px rgba(255, 50, 0, 0.4), inset 0 0 20px rgba(255, 100, 0, 0.1);
    transform: translateY(0) scale(1);
    transition: all 0.5s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    max-width: 500px;
    width: 90%;
    position: relative;
}

.glass-panel::after {
    content: '';
    position: absolute;
    bottom: -2px; left: 10%; right: 10%; height: 2px;
    background: linear-gradient(90deg, transparent, var(--gold), transparent);
}

.modal.hidden .glass-panel {
    transform: translateY(50px) scale(0.9);
}

.avatar-icon {
    width: 120px;
    height: 120px;
    border-radius: 50%;
    border: 3px solid var(--gold);
    margin: 15px auto 5px auto;
    background-color: #222;
    box-shadow: 0 0 20px rgba(255, 100, 0, 0.5);
    display: block;
    object-fit: cover;
}

.highlight-name {
    font-family: 'Cinzel', serif;
    font-size: 2.2rem;
    font-weight: 900;
    color: var(--gold-light);
    margin: 20px 0;
    text-shadow: 0 0 15px rgba(255, 100, 0, 0.8);
    text-transform: uppercase;
}

.glass-panel p {
    font-size: 1.2rem;
    margin-bottom: 25px;
    color: #ddd;
}

#reveal-group {
    color: var(--gold);
    font-size: 1.4rem;
    font-family: 'Cinzel', serif;
}

.btn-primary {
    padding: 12px 35px;
    font-size: 1.2rem;
    font-weight: 900;
    border: 1px solid var(--gold-dark);
    border-radius: 3px;
    cursor: pointer;
    transition: var(--transition);
    text-transform: uppercase;
    font-family: 'Cinzel', serif;
    color: #fff;
    background: linear-gradient(145deg, var(--gold-dark), #501000);
    box-shadow: 0 5px 15px rgba(255, 50, 0, 0.3);
}

.btn-primary:hover {
    transform: scale(1.05);
    box-shadow: 0 10px 25px rgba(255, 100, 0, 0.6);
    border-color: var(--gold);
}

.hidden {
    display: none !important;
}

/* Animations */
@keyframes fadeIn {
    from { opacity: 0; transform: translateX(-10px); }
    to { opacity: 1; transform: translateX(0); }
}

@keyframes fadeInDown {
    from { opacity: 0; transform: translateY(-20px); }
    to { opacity: 1; transform: translateY(0); }
}

/* Media Queries */
@media (max-width: 1200px) {
    #cases-grid {
        grid-template-columns: repeat(7, 1fr);
    }
}

@media (max-width: 992px) {
    #groups-container {
        grid-template-columns: repeat(3, 1fr);
        overflow-y: auto;
    }
    main {
        overflow-y: auto;
    }
    .epic-title { font-size: 3.5rem; }
}

@media (max-width: 768px) {
    #cases-grid {
        grid-template-columns: repeat(6, 1fr);
    }
    .case {
        height: 45px;
        font-size: 1.1rem;
    }
    #groups-container {
        grid-template-columns: 1fr 1fr;
    }
    .epic-title { font-size: 2.5rem; }
    .epic-start-btn { font-size: 1.8rem; padding: 15px 40px; }
}

@media (max-width: 480px) {
    #cases-grid {
        grid-template-columns: repeat(5, 1fr);
    }
    #groups-container {
        grid-template-columns: 1fr;
    }
}