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

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    min-height: 100vh;
    color: #333;
    line-height: 1.6;
}

/* Container layout */
.app-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 20px;
}

/* Header Styles */
.app-header {
    background: rgba(255, 255, 255, 0.95);
    padding: 20px;
    border-radius: 15px;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.1);
    margin-bottom: 20px;
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.2);
}

/* Navigation Menu */
.main-menu {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-bottom: 20px;
    justify-content: center;
}

.main-menu a {
    background: rgba(102, 126, 234, 0.1);
    color: #5568d3;
    text-decoration: none;
    padding: 12px 20px;
    border-radius: 25px;
    font-weight: 500;
    transition: all 0.3s ease;
    border: 2px solid rgba(102, 126, 234, 0.2);
    font-size: 0.9rem;
}

.main-menu a:hover {
    background: rgba(102, 126, 234, 0.2);
    transform: translateY(-2px);
    box-shadow: 0 4px 15px rgba(102, 126, 234, 0.3);
}

.main-menu a.active {
    background: linear-gradient(135deg, #667eea, #5568d3);
    color: white;
    box-shadow: 0 4px 15px rgba(102, 126, 234, 0.4);
}

/* Hero Section */
.hero-section {
    text-align: center;
    margin-top: 20px;
}

.hero-section h1 {
    color: #667eea;
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 10px;
}

.hero-subtitle {
    color: #666;
    font-size: 1.2rem;
    font-weight: 400;
}

/* Main Content */
.main-content {
    background: rgba(255, 255, 255, 0.95);
    border-radius: 15px;
    padding: 40px;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.1);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.2);
    margin-bottom: 20px;
}

/* Footer Styles */
.app-footer {
    background: rgba(255, 255, 255, 0.95);
    padding: 20px;
    border-radius: 15px;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.1);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.2);
    text-align: center;
    color: #333;
    font-weight: 500;
}

.app-footer p {
    margin-bottom: 10px;
}

.app-footer a {
    color: #667eea;
    text-decoration: none;
    margin: 0 10px;
    font-weight: 500;
    transition: color 0.3s ease;
}

.app-footer a:hover {
    color: #5568d3;
    text-decoration: underline;
}

/* Section Styles */
.intro-section {
    text-align: center;
    margin-bottom: 40px;
}

.intro-section h2 {
    color: #667eea;
    font-size: 2rem;
    margin-bottom: 20px;
    font-weight: 600;
}

.intro-section p {
    color: #555;
    font-size: 1.1rem;
    line-height: 1.8;
    margin-bottom: 15px;
}

/* Responsive design */
@media (max-width: 768px) {
    .app-container {
        padding: 15px;
    }
    
    .app-header {
        padding: 20px;
    }
    
    .hero-section h1 {
        font-size: 2rem;
    }
    
    .hero-subtitle {
        font-size: 1rem;
    }
    
    .main-content {
        padding: 25px;
    }
    
    .main-menu {
        flex-direction: column;
        align-items: center;
    }
    
    .main-menu a {
        width: 100%;
        text-align: center;
        max-width: 300px;
    }
}

@media (max-width: 480px) {
    .hero-section h1 {
        font-size: 1.8rem;
    }
    
    .intro-section h2 {
        font-size: 1.6rem;
    }
    
    .main-content {
        padding: 20px;
    }
}

/* Floating Coffee Button */
.floating-coffee-btn {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, #FFDD44, #FF6B35);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    text-decoration: none;
    box-shadow: 0 4px 20px rgba(255, 107, 53, 0.3);
    transition: all 0.3s ease;
    z-index: 1000;
    border: 3px solid white;
}

.floating-coffee-btn:hover {
    transform: translateY(-5px) scale(1.1);
    box-shadow: 0 8px 30px rgba(255, 107, 53, 0.5);
}

.floating-coffee-btn i {
    font-size: 24px;
    color: white;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.3);
}

/* Tooltip */
.floating-coffee-btn::before {
    content: "Apoie o projeto!";
    position: absolute;
    right: 70px;
    top: 50%;
    transform: translateY(-50%);
    background: rgba(51, 51, 51, 0.9);
    color: white;
    padding: 8px 12px;
    border-radius: 6px;
    font-size: 14px;
    white-space: nowrap;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
    pointer-events: none;
    backdrop-filter: blur(10px);
}

.floating-coffee-btn::after {
    content: "";
    position: absolute;
    right: 60px;
    top: 50%;
    transform: translateY(-50%);
    border: 6px solid transparent;
    border-left-color: rgba(51, 51, 51, 0.9);
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
}

.floating-coffee-btn:hover::before,
.floating-coffee-btn:hover::after {
    opacity: 1;
    visibility: visible;
}

/* Auto-show tooltip on mobile for 3 seconds */
.floating-coffee-btn.mobile-show::before,
.floating-coffee-btn.mobile-show::after {
    opacity: 1;
    visibility: visible;
    animation: mobileTooltipShow 3s ease-in-out;
}

@keyframes mobileTooltipShow {
    0% {
        opacity: 0;
        visibility: hidden;
    }
    10% {
        opacity: 1;
        visibility: visible;
    }
    90% {
        opacity: 1;
        visibility: visible;
    }
    100% {
        opacity: 0;
        visibility: hidden;
    }
}

/* Responsive adjustments for mobile */
@media (max-width: 768px) {
    .floating-coffee-btn {
        bottom: 20px;
        right: 20px;
        width: 50px;
        height: 50px;
    }
    
    .floating-coffee-btn i {
        font-size: 20px;
    }
    
    .floating-coffee-btn::before {
        right: 60px;
        font-size: 12px;
        padding: 6px 10px;
    }
    
    .floating-coffee-btn::after {
        right: 50px;
        border-width: 5px;
    }
}

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

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

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

.hero-section {
    animation: fadeIn 1s ease-out;
}

.main-menu {
    animation: slideDown 0.6s ease-out;
}

.main-content {
    animation: fadeInUp 0.8s ease-out;
}