:root {
    --primary: #667eea;
    --secondary: #764ba2;
    --dark: #2c3e50;
    --light: #f8f9fa;
    --accent: #e74c3c;
}

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

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    line-height: 1.6;
    color: #333;
    background: var(--light);
}

/* Roll-up Banner */
.roll-up-banner {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    background: linear-gradient(135deg, #ff7e5f, #feb47b);
    color: white;
    text-align: center;
    padding: 12px 20px;
    z-index: 2000;
    box-shadow: 0 4px 12px rgba(0,0,0,0.15);
    cursor: pointer;
    transition: transform 0.5s ease, opacity 0.3s ease;
    transform: translateY(-100%);
    opacity: 0;
}

.roll-up-banner.show {
    transform: translateY(0);
    opacity: 1;
}

.banner-content {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    font-weight: bold;
    font-size: 1.1rem;
    text-shadow: 1px 1px 2px rgba(0,0,0,0.2);
}

.banner-icon {
    font-size: 1.4rem;
    animation: bounce 2s infinite;
}

.banner-text {
    animation: pulse 1.5s infinite;
}

.close-banner {
    position: absolute;
    right: 15px;
    top: 50%;
    transform: translateY(-50%);
    background: rgba(255,255,255,0.2);
    border: none;
    color: white;
    width: 24px;
    height: 24px;
    border-radius: 50%;
    cursor: pointer;
    font-weight: bold;
    display: flex;
    align-items: center;
    justify-content: center;
}

/* Pop-up Modal */
.popup-modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0,0,0,0.7);
    z-index: 3000;
    align-items: center;
    justify-content: center;
}

.popup-content {
    background: white;
    border-radius: 15px;
    padding: 2rem;
    max-width: 500px;
    width: 90%;
    text-align: center;
    box-shadow: 0 10px 30px rgba(0,0,0,0.3);
    position: relative;
    animation: popIn 0.4s ease;
}

.popup-title {
    color: var(--dark);
    margin-bottom: 1rem;
    font-size: 1.5rem;
}

.popup-text {
    margin-bottom: 1.5rem;
    color: #666;
    line-height: 1.6;
}

.popup-buttons {
    display: flex;
    gap: 1rem;
    justify-content: center;
}

.close-popup {
    position: absolute;
    top: 15px;
    right: 15px;
    background: none;
    border: none;
    font-size: 1.5rem;
    cursor: pointer;
    color: #999;
}

/* Header */
.header {
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    color: white;
    padding: 1rem 0;
    position: fixed;
    width: 100%;
    top: 0;
    z-index: 1000;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
    transition: top 0.3s ease;
}

.header.with-banner {
    top: 50px;
}

.nav {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-size: 1.5rem;
    font-weight: bold;
}

.logo a {
    color: white;
    text-decoration: none;
}

.nav-links {
    display: flex;
    gap: 2rem;
    list-style: none;
    align-items: center;
}

.nav-links a {
    color: white;
    text-decoration: none;
    font-weight: 500;
    transition: color 0.3s;
}

.nav-links a:hover {
    color: #ffd700;
}

/* Language Selector */
.language-selector {
    position: relative;
}

.language-dropdown {
    background: rgba(255, 255, 255, 0.2);
    border: none;
    color: white;
    padding: 5px 10px;
    border-radius: 5px;
    cursor: pointer;
    font-weight: 500;
}

.language-dropdown option {
    background: var(--dark);
    color: white;
}

/* Hero Section */
.hero {
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    color: white;
    padding: 150px 0 80px;
    text-align: center;
    margin-top: 60px;
    transition: margin-top 0.3s ease;
}

.hero.with-banner {
    margin-top: 110px;
}

.hero h1 {
    font-size: 2.8rem;
    margin-bottom: 1rem;
    animation: fadeInUp 1s ease;
}

.hero p {
    font-size: 1.2rem;
    margin-bottom: 2rem;
    opacity: 0.9;
    animation: fadeInUp 1s ease 0.2s both;
}

.cta-buttons {
    display: flex;
    gap: 1rem;
    justify-content: center;
    flex-wrap: wrap;
    animation: fadeInUp 1s ease 0.4s both;
}

.btn {
    display: inline-block;
    padding: 12px 30px;
    border-radius: 50px;
    text-decoration: none;
    font-weight: bold;
    transition: all 0.3s ease;
    border: none;
    cursor: pointer;
    font-size: 1rem;
}

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

.btn-primary:hover {
    background: #c0392b;
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(0,0,0,0.2);
}

.btn-secondary {
    background: transparent;
    color: white;
    border: 2px solid white;
}

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

/* Games Section */
.games-section {
    padding: 60px 0;
    background: white;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

.section-title {
    text-align: center;
    margin-bottom: 3rem;
}

.section-title h2 {
    font-size: 2.2rem;
    color: var(--dark);
    margin-bottom: 1rem;
}

.section-title p {
    color: #666;
    font-size: 1.1rem;
}

.games-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.game-card {
    background: var(--light);
    border-radius: 15px;
    overflow: hidden;
    box-shadow: 0 5px 15px rgba(0,0,0,0.1);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.game-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 30px rgba(0,0,0,0.15);
}

.game-image {
    height: 200px;
    background: linear-gradient(45deg, var(--primary), var(--secondary));
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 3rem;
}

.game-content {
    padding: 1.5rem;
}

.game-content h3 {
    font-size: 1.5rem;
    margin-bottom: 0.5rem;
    color: var(--dark);
}

.game-content p {
    color: #666;
    margin-bottom: 1rem;
}

.game-stats {
    display: flex;
    justify-content: space-between;
    color: #888;
    font-size: 0.9rem;
    margin-bottom: 1rem;
}

/* Features Section */
.features {
    padding: 60px 0;
    background: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
    color: white;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
}

.feature-card {
    text-align: center;
    padding: 2rem;
}

.feature-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
}

.feature-card h3 {
    margin-bottom: 1rem;
    font-size: 1.5rem;
}

/* Footer */
.footer {
    background: var(--dark);
    color: white;
    padding: 3rem 0 1rem;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin-bottom: 2rem;
}

.footer-section h3 {
    margin-bottom: 1rem;
    color: #ffd700;
}

.footer-bottom {
    text-align: center;
    padding-top: 2rem;
    border-top: 1px solid #444;
    color: #888;
}

/* Animations */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes bounce {
    0%, 20%, 50%, 80%, 100% {
        transform: translateY(0);
    }
    40% {
        transform: translateY(-5px);
    }
    60% {
        transform: translateY(-3px);
    }
}

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

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

/* Responsive */
@media (max-width: 768px) {
    .nav-links {
        flex-direction: column;
        gap: 1rem;
    }
    
    .hero h1 {
        font-size: 2.2rem;
    }
    
    .cta-buttons {
        flex-direction: column;
        align-items: center;
    }
    
    .btn {
        width: 200px;
        text-align: center;
    }
    
    .banner-content {
        font-size: 0.9rem;
    }
    
    .popup-buttons {
        flex-direction: column;
    }
}
/* Quick Access Section */
.quick-access {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 60px 0;
    text-align: center;
}

.quick-access-content {
    max-width: 800px;
    margin: 0 auto;
}

.quick-access-icon {
    font-size: 4rem;
    margin-bottom: 1rem;
    animation: bounce 2s infinite;
}

.quick-access h2 {
    font-size: 2.5rem;
    margin-bottom: 1rem;
}

.quick-access-subtitle {
    font-size: 1.3rem;
    margin-bottom: 2rem;
    opacity: 0.9;
}

.quick-access-text {
    background: rgba(255, 255, 255, 0.1);
    padding: 2rem;
    border-radius: 15px;
    text-align: left;
    margin-top: 2rem;
}

.instructions {
    margin-top: 2rem;
}

.instruction-group {
    margin-bottom: 2rem;
    padding: 1.5rem;
    background: rgba(255, 255, 255, 0.05);
    border-radius: 10px;
}

.instruction-group h4 {
    color: #ffd700;
    margin-bottom: 1rem;
    font-size: 1.2rem;
}

.instruction-group ol {
    padding-left: 1.5rem;
}

.instruction-group li {
    margin-bottom: 0.5rem;
    line-height: 1.6;
}

@media (max-width: 768px) {
    .quick-access h2 {
        font-size: 2rem;
    }
    
    .quick-access-subtitle {
        font-size: 1.1rem;
    }
    
    .quick-access-text {
        padding: 1.5rem;
    }
}
/* Utility Classes για Μέγεθος Τίτλων - ΕΥΚΟΛΗ ΤΡΟΠΟΠΟΙΗΣΗ */
.text-xs { font-size: 0.75rem; }      /* Πολύ μικρό */
.text-sm { font-size: 0.875rem; }     /* Μικρό */
.text-base { font-size: 1rem; }       /* Κανονικό */
.text-lg { font-size: 1.125rem; }     /* Μεγάλο */
.text-xl { font-size: 1.25rem; }      /* Πολύ μεγάλο */
.text-2xl { font-size: 1.5rem; }      /* Εxtra large */
.text-3xl { font-size: 1.875rem; }    /* 3XL */
.text-4xl { font-size: 2.25rem; }     /* 4XL */

/* Utility Classes για Υπότιτλους */
.subtitle-sm { font-size: 0.9rem; opacity: 0.8; }
.subtitle-md { font-size: 1rem; opacity: 0.8; }
.subtitle-lg { font-size: 1.1rem; opacity: 0.8; }

/* Specific Classes για Συγκεκριμένες Περιοχές - ΕΔΩ ΘΑ ΑΛΛΑΖΕΤΕ ΤΑ ΜΕΓΕΘΗ */
.section-main-title { font-size: 1.8rem; }        /* Κύριοι τίτλοι sections */
.section-subtitle { font-size: 1.1rem; }          /* Υπότιτλοι sections */
.game-card-title { font-size: 1.2rem; }           /* Τίτλοι game cards */
.feature-title { font-size: 1.3rem; }             /* Τίτλοι features */
.quick-access-main { font-size: 2rem; }           /* Κύριος τίτλος Quick Access */
.quick-access-sub { font-size: 1.2rem; }          /* Υπότιτλος Quick Access */

/* ΜΕΤΡΙΟΙ ΤΙΤΛΟΙ - Αντικαταστάθηκε από τον χρήστη */
.section-title h2 {
    font-size: 1.5rem !important;
}

.section-title p {
    font-size: 1.1rem !important;
}

.game-card h3 {
    font-size: 1.3rem !important;
}

.feature-card h3 {
    font-size: 1.4rem !important;
}

.quick-access h2 {
    font-size: 1.8rem !important;
}

.quick-access .quick-access-subtitle {
    font-size: 1.2rem !important;
}

.hero h1 {
    font-size: 1.8rem !important;
}

.hero p {
    font-size: 1.2rem !important;
}

.footer-section h3 {
    font-size: 1.2rem !important;
}

.instructions h3 {
    font-size: 1.4rem !important;
}

.instruction-group h4 {
    font-size: 1.1rem !important;
}

.game-content h3 {
    font-size: 1.3rem !important;
}

.feature-card h3 {
    font-size: 1.4rem !important;
}