/* Base styles and CSS reset */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: linear-gradient(135deg, #2c3e50 0%, #34495e 100%);
    color: #ecf0f1;
    overflow: hidden;
    height: 100vh;
}

#app {
    width: 100vw;
    height: 100vh;
    position: relative;
}

/* Screen management */
.screen {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: opacity 0.3s ease;
}

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

/* Loading screen */
#loading-screen {
    background: linear-gradient(135deg, #1a252f 0%, #2c3e50 100%);
}

.loading-content {
    text-align: center;
}

.loading-content h1 {
    font-size: 3rem;
    margin-bottom: 2rem;
    color: #f39c12;
    text-shadow: 2px 2px 4px rgba(0,0,0,0.5);
}

.loading-spinner {
    width: 50px;
    height: 50px;
    border: 4px solid #34495e;
    border-top: 4px solid #f39c12;
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin: 0 auto 1rem;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

.loading-content p {
    font-size: 1.2rem;
    color: #bdc3c7;
}

/* Main menu */
#main-menu {
    background: linear-gradient(135deg, #2c3e50 0%, #34495e 100%);
}

.menu-content {
    text-align: center;
    background: rgba(44, 62, 80, 0.9);
    padding: 3rem;
    border-radius: 15px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.3);
}

.menu-content h1 {
    font-size: 3.5rem;
    margin-bottom: 3rem;
    color: #f39c12;
    text-shadow: 2px 2px 4px rgba(0,0,0,0.5);
}

.menu-buttons {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.menu-btn {
    padding: 1rem 2rem;
    font-size: 1.3rem;
    background: linear-gradient(135deg, #e74c3c 0%, #c0392b 100%);
    color: white;
    border: none;
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: 0 4px 15px rgba(231, 76, 60, 0.3);
}

.menu-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(231, 76, 60, 0.4);
}

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

/* Dev test button styling */
.menu-btn.dev-btn {
    background: linear-gradient(135deg, #9b59b6 0%, #8e44ad 100%);
    box-shadow: 0 4px 15px rgba(155, 89, 182, 0.3);
    position: relative;
}

.menu-btn.dev-btn::before {
    content: "🔧";
    position: absolute;
    left: 0.75rem;
    top: 50%;
    transform: translateY(-50%);
}

.menu-btn.dev-btn:hover {
    box-shadow: 0 6px 20px rgba(155, 89, 182, 0.4);
}

/* Modal styles */
.modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.7);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
    transition: opacity 0.3s ease;
}

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

.modal-content {
    background: #34495e;
    padding: 2rem;
    border-radius: 10px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.5);
    min-width: 300px;
    text-align: center;
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1rem;
}

.modal-header h3 {
    color: #f39c12;
    font-size: 1.5rem;
}

.close-btn {
    background: none;
    border: none;
    color: #bdc3c7;
    font-size: 1.5rem;
    cursor: pointer;
    padding: 0.5rem;
    border-radius: 50%;
    transition: all 0.3s ease;
}

.close-btn:hover {
    background: rgba(231, 76, 60, 0.2);
    color: #e74c3c;
}

/* Buttons */
.control-btn {
    padding: 0.8rem 1.5rem;
    background: linear-gradient(135deg, #3498db 0%, #2980b9 100%);
    color: white;
    border: none;
    border-radius: 6px;
    cursor: pointer;
    font-size: 0.9rem;
    transition: all 0.3s ease;
    box-shadow: 0 2px 8px rgba(52, 152, 219, 0.3);
}

.control-btn:hover {
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(52, 152, 219, 0.4);
}

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

/* Utility classes */
.hidden {
    display: none !important;
}

.fade-in {
    animation: fadeIn 0.5s ease-in;
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}