/* Main Layout & Typography */
:root {
    --primary-color: #2E7D32;
    --secondary-color: #FFA726;
    --accent-color: #FF6B35;
    --text-primary: #1A1A1A;
    --text-secondary: #666666;
    --background-light: #F8F9FA;
    --background-white: #FFFFFF;
    --border-color: #E0E0E0;
    --shadow-light: 0 2px 8px rgba(0,0,0,0.1);
    --shadow-medium: 0 4px 16px rgba(0,0,0,0.15);
    --border-radius: 12px;
    --transition: all 0.3s ease;
}

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

body {
    font-family: 'Inter', sans-serif;
    line-height: 1.6;
    color: var(--text-primary);
    background: var(--background-light);
    overflow-x: hidden;
}

.app-container {
    min-height: 100vh;
    position: relative;
}

/* Typography */
h1, h2, h3 {
    font-family: 'Playfair Display', serif;
    line-height: 1.2;
    margin-bottom: 1rem;
}

h1 { font-size: 2.5rem; font-weight: 700; }
h2 { font-size: 2rem; font-weight: 600; }
h3 { font-size: 1.5rem; font-weight: 500; }

p { margin-bottom: 1rem; }

/* Language Selector */
.language-selector {
    position: fixed;
    top: 20px;
    right: 20px;
    z-index: 1000;
}

.language-selector select {
    background: rgba(255,255,255,0.9);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 8px 12px;
    font-size: 14px;
    cursor: pointer;
    backdrop-filter: blur(10px);
}

/* Screen Management */
.screen {
    display: none;
    min-height: 100vh;
}

.screen.active {
    display: block;
}

/* Utility Classes */
.hidden { display: none !important; }
.visible { display: block !important; }
.flex { display: flex; }
.flex-center { display: flex; align-items: center; justify-content: center; }
.text-center { text-align: center; }
.full-width { width: 100%; }

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

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

.fade-in { animation: fadeIn 0.6s ease-out; }
.pulse { animation: pulse 2s infinite; }