/* ============================================
   Shepherd's Forest Rescue - Main Styles
   ============================================ */

/* CSS Variables */
:root {
    --color-primary: #4a7c59;
    --color-secondary: #8fbc8f;
    --color-accent: #ffd700;
    --color-danger: #c0392b;
    --color-dark: #2c3e50;
    --color-light: #ecf0f1;
    --color-forest-dark: #1a3a2a;
    --color-forest-light: #3d6b4f;
    --color-sky: #87ceeb;
    --color-sunset: #ff7f50;
    
    --font-main: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    --font-title: Georgia, 'Times New Roman', serif;
    
    --shadow-soft: 0 4px 6px rgba(0, 0, 0, 0.1);
    --shadow-medium: 0 6px 12px rgba(0, 0, 0, 0.2);
    --shadow-hard: 0 8px 20px rgba(0, 0, 0, 0.3);
    
    --transition-fast: 0.15s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;
}

/* Reset & Base */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html, body {
    width: 100%;
    height: 100%;
    overflow: hidden;
    font-family: var(--font-main);
    background: linear-gradient(135deg, var(--color-forest-dark) 0%, var(--color-forest-light) 100%);
}

body {
    display: flex;
    justify-content: center;
    align-items: center;
}

/* Game Container */
#game-container {
    position: relative;
    width: 100%;
    height: 100%;
    max-width: 1280px;
    max-height: 720px;
    background: #000;
    overflow: hidden;
    box-shadow: var(--shadow-hard);
}

@media (min-width: 1300px) {
    #game-container {
        border-radius: 12px;
    }
}

/* Screens */
.screen {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    display: none;
    flex-direction: column;
    justify-content: center;
    align-items: center;
}

.screen.active {
    display: flex;
}

/* Main Menu */
#main-menu {
    background: linear-gradient(180deg, 
        var(--color-sky) 0%, 
        var(--color-secondary) 50%, 
        var(--color-primary) 100%);
    background-size: cover;
}

.menu-content {
    text-align: center;
    padding: 2rem;
    background: rgba(255, 255, 255, 0.9);
    border-radius: 20px;
    box-shadow: var(--shadow-hard);
    max-width: 90%;
    animation: fadeInUp 0.6s ease;
}

.game-title {
    font-family: var(--font-title);
    font-size: 2.5rem;
    color: var(--color-primary);
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.1);
    margin-bottom: 0.5rem;
}

.tagline {
    color: var(--color-dark);
    font-size: 1rem;
    margin-bottom: 2rem;
    opacity: 0.8;
}

/* Menu Buttons */
.menu-buttons {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.menu-btn {
    padding: 1rem 2rem;
    font-size: 1.1rem;
    font-family: var(--font-main);
    font-weight: 600;
    border: none;
    border-radius: 10px;
    cursor: pointer;
    transition: all var(--transition-fast);
    background: var(--color-secondary);
    color: var(--color-dark);
    box-shadow: var(--shadow-soft);
}

.menu-btn:hover:not(:disabled) {
    transform: translateY(-2px);
    box-shadow: var(--shadow-medium);
    background: var(--color-primary);
    color: white;
}

.menu-btn:active:not(:disabled) {
    transform: translateY(0);
}

.menu-btn:focus {
    outline: 3px solid var(--color-accent);
    outline-offset: 2px;
    transform: translateY(-2px);
    box-shadow: var(--shadow-medium);
}

.menu-btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.menu-btn.primary {
    background: var(--color-primary);
    color: white;
}

.menu-btn.primary:hover {
    background: var(--color-forest-dark);
}

/* Screen Content */
.screen-content {
    text-align: center;
    padding: 2rem;
    background: rgba(255, 255, 255, 0.95);
    border-radius: 20px;
    box-shadow: var(--shadow-hard);
    max-width: 90%;
    max-height: 90%;
    overflow-y: auto;
}

.screen-content h2 {
    color: var(--color-primary);
    margin-bottom: 1.5rem;
    font-family: var(--font-title);
}

/* Level Select */
#level-select {
    background: linear-gradient(180deg, 
        var(--color-sky) 0%, 
        var(--color-secondary) 100%);
}

.level-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 1rem;
    margin-bottom: 1.5rem;
    max-width: 600px;
}

.level-btn {
    padding: 1rem;
    border: 3px solid var(--color-primary);
    border-radius: 12px;
    background: white;
    cursor: pointer;
    transition: all var(--transition-fast);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.25rem;
}

.level-btn.unlocked:hover {
    background: var(--color-secondary);
    transform: scale(1.05);
}

.level-btn.locked {
    opacity: 0.6;
    cursor: not-allowed;
    border-color: #999;
}

.level-btn.bonus-level.unlocked {
    background: linear-gradient(135deg, #FFD700, #FFA500);
    border-color: #FF8C00;
    box-shadow: 0 0 20px rgba(255, 215, 0, 0.5);
    animation: bonusGlow 2s ease-in-out infinite;
}

.level-btn.bonus-level.unlocked:hover {
    background: linear-gradient(135deg, #FFA500, #FFD700);
    transform: scale(1.08);
}

@keyframes bonusGlow {
    0%, 100% {
        box-shadow: 0 0 20px rgba(255, 215, 0, 0.5);
    }
    50% {
        box-shadow: 0 0 30px rgba(255, 215, 0, 0.8);
    }
}

.level-num {
    font-size: 1.5rem;
    font-weight: bold;
    color: var(--color-primary);
}

.level-btn.bonus-level .level-num {
    font-size: 2rem;
    color: #FF8C00;
}

.level-name {
    font-size: 0.85rem;
    color: var(--color-dark);
}

.level-sheep {
    font-size: 0.9rem;
}

/* Options */
#options-screen {
    background: linear-gradient(180deg, 
        var(--color-forest-light) 0%, 
        var(--color-forest-dark) 100%);
}

.option-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem;
    border-bottom: 1px solid #ddd;
}

.option-row label {
    font-weight: 500;
    color: var(--color-dark);
}

.option-row input[type="range"] {
    width: 150px;
    accent-color: var(--color-primary);
}

.option-row input[type="checkbox"] {
    width: 24px;
    height: 24px;
    accent-color: var(--color-primary);
}

/* Credits */
#credits-screen {
    background: linear-gradient(180deg, 
        var(--color-sunset) 0%, 
        var(--color-primary) 100%);
}

#credits-screen p {
    color: var(--color-dark);
    margin: 0.5rem 0;
}

/* Game Screen */
#game-screen {
    background: #000;
}

#game-canvas {
    display: block;
    width: 100%;
    height: 100%;
    image-rendering: pixelated;
    image-rendering: crisp-edges;
}

/* Overlays */
.overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.7);
    display: none;
    justify-content: center;
    align-items: center;
    z-index: 100;
}

.overlay.active {
    display: flex;
}

.overlay-content {
    text-align: center;
    padding: 2rem 3rem;
    background: rgba(255, 255, 255, 0.95);
    border-radius: 20px;
    box-shadow: var(--shadow-hard);
    animation: popIn 0.3s ease;
}

.overlay-content h2 {
    color: var(--color-primary);
    margin-bottom: 1.5rem;
    font-family: var(--font-title);
    font-size: 2rem;
}

.overlay-content .menu-btn {
    display: block;
    width: 100%;
    margin: 0.5rem 0;
}

/* Stats */
.stats {
    margin: 1.5rem 0;
    padding: 1rem;
    background: var(--color-light);
    border-radius: 10px;
}

.stats p {
    margin: 0.5rem 0;
    font-size: 1.1rem;
    color: var(--color-dark);
}

/* Loading Screen */
#loading-screen {
    background: var(--color-forest-dark);
}

#loading-screen.active {
    display: flex;
}

#loading-screen .overlay-content {
    background: transparent;
    color: white;
}

#loading-screen h2 {
    color: white;
}

#loading-screen p {
    color: var(--color-light);
    margin-top: 1rem;
}

.loading-bar {
    width: 300px;
    height: 20px;
    background: rgba(255, 255, 255, 0.2);
    border-radius: 10px;
    overflow: hidden;
    margin-top: 1rem;
}

#loading-progress {
    width: 0%;
    height: 100%;
    background: linear-gradient(90deg, var(--color-primary), var(--color-accent));
    border-radius: 10px;
    transition: width 0.3s ease;
}

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

@keyframes popIn {
    from {
        opacity: 0;
        transform: scale(0.8);
    }
    to {
        opacity: 1;
        transform: scale(1);
    }
}

@keyframes bounce {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-10px); }
}

/* Responsive */
@media (max-width: 600px) {
    .game-title {
        font-size: 1.8rem;
    }
    
    .tagline {
        font-size: 0.9rem;
    }
    
    .menu-btn {
        padding: 0.8rem 1.5rem;
        font-size: 1rem;
    }
    
    .level-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .screen-content, .menu-content, .overlay-content {
        padding: 1.5rem;
    }
}

@media (max-height: 500px) {
    .menu-content {
        padding: 1rem;
    }
    
    .game-title {
        font-size: 1.5rem;
        margin-bottom: 0.25rem;
    }
    
    .tagline {
        margin-bottom: 1rem;
    }
    
    .menu-buttons {
        gap: 0.5rem;
    }
    
    .menu-btn {
        padding: 0.6rem 1.5rem;
    }
}