:root {
    --primary-color: #ff0000;
    --secondary-color: #121212;
    --accent-color: #ff3333;
    --text-color: #ffffff;
    --bg-color: #000000;
    --card-bg: #1a1a1a;
    --card-hover: #252525;
    --danger-glow: 0 0 15px rgba(255, 0, 0, 0.5);
    --metal-border: linear-gradient(135deg, #2a2a2a 0%, #000 50%, #2a2a2a 100%);
    --modern-shadow: 0 4px 20px rgba(0, 0, 0, 0.5);
    --transition: all 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);
    --glass-effect: rgba(26, 26, 26, 0.4);
    --success-color: #00cc44;
    --border-radius: 12px;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    letter-spacing: 0.5px;
}

html {
    scroll-behavior: smooth;
}

body {
    background-color: var(--bg-color);
    color: var(--text-color);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    background-image: radial-gradient(circle at center, #1a1a1a 0%, #000 100%);
    line-height: 1.6;
}

/* Modern Access Screen */
#access-screen {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: var(--secondary-color);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 1000;
    background-image: 
        linear-gradient(rgba(0, 0, 0, 0.9), rgba(0, 0, 0, 0.9)),
        url('data:image/svg+xml;utf8,<svg width="100%" height="100%" xmlns="http://www.w3.org/2000/svg"><pattern id="pattern" x="0" y="0" width="40" height="40" patternUnits="userSpaceOnUse"><rect x="0" y="0" width="40" height="40" fill="%23121212"/><path d="M0 0h40v40H0z" fill="none" stroke="%23ff0000" stroke-width="0.5"/></pattern><rect width="100%" height="100%" fill="url(%23pattern)"/></svg>');
    backdrop-filter: blur(5px);
}

.access-container {
    text-align: center;
    padding: 3rem;
    border: none;
    background-color: rgba(0, 0, 0, 0.9);
    max-width: 500px;
    width: 90%;
    border-radius: var(--border-radius);
    box-shadow: 
        0 10px 25px rgba(0, 0, 0, 0.7),
        var(--danger-glow);
    backdrop-filter: blur(12px);
    transform: translateY(0);
    animation: fadeInUp 0.5s ease-out;
    border: 1px solid rgba(255, 0, 0, 0.3);
}

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

.access-container h1 {
    color: var(--primary-color);
    font-size: 2.4rem;
    margin-bottom: 1.5rem;
    font-weight: 700;
    letter-spacing: 2px;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.5);
}

.code-display {
    height: 80px;
    margin: 2rem auto;
    font-size: 2.4rem;
    letter-spacing: 10px;
    color: var(--primary-color);
    background-color: rgba(26, 26, 26, 0.8);
    border: 2px solid var(--primary-color);
    border-radius: var(--border-radius);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 0 1rem;
    transition: var(--transition);
    font-family: 'Courier New', monospace;
    font-weight: bold;
    box-shadow: inset 0 0 10px rgba(0, 0, 0, 0.7);
}

.code-display.correct {
    animation: pulse 0.5s;
    background-color: rgba(0, 204, 68, 0.2);
    border-color: var(--success-color);
    color: var(--success-color);
}

@keyframes pulse {
    0% { transform: scale(1); }
    50% { transform: scale(1.05); }
    100% { transform: scale(1); }
}

.hint {
    color: #666666;
    font-style: italic;
    margin-top: 1.5rem;
    text-transform: none;
    letter-spacing: normal;
    font-size: 0.95rem;
    line-height: 1.5;
}

.hidden {
    display: none !important;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.3s, visibility 0.3s;
}

/* Modern Header */
header {
    background-color: var(--secondary-color);
    padding: 1.2rem 2.5rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    position: relative;
    z-index: 10;
    box-shadow: var(--modern-shadow);
    border-bottom: 1px solid rgba(255, 0, 0, 0.2);
}

header h1 {
    color: var(--primary-color);
    font-size: 2rem;
    font-weight: 800;
    letter-spacing: 1px;
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

header h1::before {
    content: "🎮";
    font-size: 1.8rem;
}

/* Modern Buttons */
.btn {
    background-color: var(--primary-color);
    color: var(--text-color);
    border: none;
    padding: 0.8rem 1.75rem;
    margin-left: 1rem;
    cursor: pointer;
    font-weight: 600;
    transition: var(--transition);
    border-radius: var(--border-radius);
    box-shadow: var(--modern-shadow);
    font-size: 0.95rem;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    position: relative;
    overflow: hidden;
}

.btn::after {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: linear-gradient(
        to bottom right,
        rgba(255, 255, 255, 0) 0%,
        rgba(255, 255, 255, 0) 45%,
        rgba(255, 255, 255, 0.2) 50%,
        rgba(255, 255, 255, 0) 55%,
        rgba(255, 255, 255, 0) 100%
    );
    transform: rotate(30deg);
    transition: all 0.3s;
}

.btn:hover {
    background-color: var(--accent-color);
    transform: translateY(-2px);
    box-shadow: 0 6px 15px rgba(255, 51, 51, 0.5);
}

.btn:hover::after {
    left: 100%;
    top: 100%;
}

.btn:active {
    transform: translateY(0);
}

.btn-outline {
    background: transparent;
    border: 2px solid var(--primary-color);
    color: var(--primary-color);
}

.btn-outline:hover {
    background: var(--primary-color);
    color: var(--text-color);
}

/* Main Content */
main {
    flex: 1;
    padding: 2.5rem;
    max-width: 1600px;
    margin: 0 auto;
    width: 100%;
}

.search-container {
    margin-bottom: 3rem;
    position: relative;
    max-width: 900px;
    margin-left: auto;
    margin-right: auto;
}

#game-search {
    width: 100%;
    padding: 1.2rem 1.5rem;
    background-color: rgba(26, 26, 26, 0.9);
    border: 2px solid var(--primary-color);
    color: var(--text-color);
    font-size: 1.1rem;
    border-radius: var(--border-radius);
    transition: var(--transition);
    box-shadow: var(--modern-shadow);
    backdrop-filter: blur(5px);
}

#game-search:focus {
    outline: none;
    border-color: var(--accent-color);
    box-shadow: 0 0 0 4px rgba(255, 51, 51, 0.3);
}

#game-search::placeholder {
    color: #666666;
    opacity: 0.8;
}

.search-icon {
    position: absolute;
    right: 1.5rem;
    top: 50%;
    transform: translateY(-50%);
    color: var(--primary-color);
    pointer-events: none;
}

/* Modern Game Cards */
.games-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 2.5rem;
    width: 100%;
    margin: 0 auto;
}

.game-card {
    background-color: var(--card-bg);
    border: none;
    border-radius: var(--border-radius);
    padding: 2rem;
    cursor: pointer;
    transition: var(--transition);
    text-align: center;
    height: 100%;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    position: relative;
    overflow: hidden;
    box-shadow: var(--modern-shadow);
    border: 1px solid rgba(255, 0, 0, 0.2);
}

.game-card::before {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 5px;
    background: linear-gradient(90deg, var(--primary-color), var(--accent-color));
}

.game-card:hover {
    background-color: var(--card-hover);
    transform: translateY(-8px);
    box-shadow: 0 15px 30px rgba(0, 0, 0, 0.5);
}

.game-card h3 {
    color: var(--text-color);
    margin-bottom: 1.5rem;
    font-size: 1.3rem;
    font-weight: 600;
    position: relative;
    padding-bottom: 0.5rem;
}

.game-card h3::after {
    content: "";
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 50px;
    height: 2px;
    background: var(--primary-color);
}

.game-card .game-description {
    color: #e0e0e0;
    font-size: 0.95rem;
    margin: 1rem 0;
    opacity: 0.9;
    line-height: 1.5;
}

.game-card .game-meta {
    display: flex;
    justify-content: space-between;
    margin-top: 1.5rem;
    font-size: 0.85rem;
    color: #999999;
}

/* Modern About Section */
.about-content {
    max-width: 900px;
    margin: 0 auto;
    padding: 3rem;
    background-color: var(--card-bg);
    border-radius: var(--border-radius);
    box-shadow: var(--modern-shadow);
    border: 1px solid rgba(255, 0, 0, 0.2);
}

.about-content h2 {
    color: var(--primary-color);
    margin-bottom: 2rem;
    font-size: 2.2rem;
    font-weight: 800;
    position: relative;
    padding-bottom: 0.5rem;
}

.about-content h2::after {
    content: "";
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100px;
    height: 3px;
    background: linear-gradient(90deg, var(--primary-color), var(--accent-color));
}

.about-content p {
    margin-bottom: 1.5rem;
    line-height: 1.7;
    color: #e0e0e0;
    font-size: 1.05rem;
}

.about-content a {
    color: var(--primary-color);
    text-decoration: none;
    font-weight: 600;
    transition: var(--transition);
    border-bottom: 1px dashed var(--primary-color);
    padding-bottom: 2px;
}

.about-content a:hover {
    color: var(--accent-color);
    border-bottom-color: var(--accent-color);
}

/* Game Frame Section */
#game-frame-section {
    width: 100%;
    height: calc(100vh - 140px);
    display: flex;
    flex-direction: column;
    background-color: var(--secondary-color);
    border-radius: var(--border-radius);
    overflow: hidden;
    box-shadow: var(--modern-shadow);
    margin: 0 auto;
    max-width: 1600px;
    border: 1px solid rgba(255, 0, 0, 0.2);
}

.game-header {
    display: flex;
    align-items: center;
    padding: 1.2rem 2rem;
    background-color: var(--card-bg);
    border-bottom: 2px solid var(--primary-color);
}

#back-btn {
    background-color: var(--primary-color);
    color: var(--text-color);
    border: none;
    padding: 0.8rem 1.75rem;
    margin-right: 2rem;
    cursor: pointer;
    font-weight: 600;
    border-radius: var(--border-radius);
    transition: var(--transition);
    box-shadow: var(--modern-shadow);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

#back-btn:hover {
    background-color: var(--accent-color);
    transform: translateY(-2px);
}

#current-game-title {
    color: var(--text-color);
    font-size: 1.5rem;
    font-weight: 700;
    flex: 1;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

#game-frame {
    flex: 1;
    width: 100%;
    background-color: var(--card-bg);
    border: none;
    min-height: 500px;
}

/* Modern Footer */
footer {
    background-color: var(--secondary-color);
    padding: 2rem;
    text-align: center;
    font-size: 0.95rem;
    color: #666666;
    margin-top: 3rem;
    border-top: 1px solid rgba(255, 0, 0, 0.2);
}

footer p {
    margin-bottom: 0.5rem;
}

/* Loading Spinner */
.loader {
    display: inline-block;
    width: 50px;
    height: 50px;
    border: 5px solid rgba(255, 0, 0, 0.3);
    border-radius: 50%;
    border-top-color: var(--primary-color);
    animation: spin 1s ease-in-out infinite;
    margin: 2rem auto;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

/* Notification System */
.notification {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    padding: 1.2rem 2rem;
    background-color: var(--card-bg);
    color: var(--text-color);
    border-radius: var(--border-radius);
    box-shadow: var(--modern-shadow);
    z-index: 100;
    transform: translateY(100px);
    opacity: 0;
    transition: all 0.3s ease;
    border-left: 5px solid var(--primary-color);
    max-width: 400px;
}

.notification.show {
    transform: translateY(0);
    opacity: 1;
}

.notification.success {
    border-left-color: var(--success-color);
}

.notification.error {
    border-left-color: var(--primary-color);
}

/* Responsive Design */
@media (max-width: 1024px) {
    .games-grid {
        grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    }
    
    .about-content {
        padding: 2rem;
    }
}

@media (max-width: 768px) {
    header {
        flex-direction: column;
        padding: 1.5rem;
    }
    
    header h1 {
        margin-bottom: 1rem;
    }
    
    nav {
        margin-top: 1rem;
        display: flex;
        flex-wrap: wrap;
        justify-content: center;
        width: 100%;
    }
    
    .btn {
        margin: 0.5rem;
        width: 100%;
        max-width: 220px;
    }
    
    .access-container {
        padding: 2rem;
    }
    
    .access-container h1 {
        font-size: 2rem;
    }
    
    .code-display {
        font-size: 2rem;
        height: 70px;
    }
    
    main {
        padding: 1.5rem;
    }
    
    .game-card {
        padding: 1.5rem;
    }
    
    #game-frame-section {
        height: calc(100vh - 120px);
    }
    
    .game-header {
        flex-direction: column;
        align-items: flex-start;
        padding: 1rem;
    }
    
    #back-btn {
        margin-right: 0;
        margin-bottom: 1rem;
    }
}

@media (max-width: 480px) {
    .access-container {
        padding: 1.5rem;
    }
    
    .access-container h1 {
        font-size: 1.8rem;
    }
    
    .code-display {
        font-size: 1.8rem;
        letter-spacing: 6px;
        height: 60px;
    }
    
    .games-grid {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }
    
    .about-content {
        padding: 1.5rem;
    }
}

/* Animation for cards */
@keyframes cardEntrance {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.game-card {
    animation: cardEntrance 0.6s ease-out;
    animation-fill-mode: backwards;
}

/* Delay animations for grid items */
.games-grid .game-card:nth-child(1) { animation-delay: 0.1s; }
.games-grid .game-card:nth-child(2) { animation-delay: 0.2s; }
.games-grid .game-card:nth-child(3) { animation-delay: 0.3s; }
.games-grid .game-card:nth-child(4) { animation-delay: 0.4s; }
.games-grid .game-card:nth-child(5) { animation-delay: 0.5s; }
.games-grid .game-card:nth-child(6) { animation-delay: 0.6s; }
.games-grid .game-card:nth-child(7) { animation-delay: 0.7s; }
.games-grid .game-card:nth-child(8) { animation-delay: 0.8s; }

/* Smooth transitions for all interactive elements */
a, button, input, .game-card {
    transition: var(--transition);
}

/* Focus states for accessibility */
button:focus, input:focus, .game-card:focus {
    outline: 2px solid var(--accent-color);
    outline-offset: 2px;
}

/* Modern Scrollbar */
::-webkit-scrollbar {
    width: 10px;
}

::-webkit-scrollbar-track {
    background: var(--secondary-color);
}

::-webkit-scrollbar-thumb {
    background: var(--primary-color);
    border-radius: 5px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--accent-color);
}