/* Interactive Introduction Styles */
.intro-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    background: linear-gradient(135deg, rgba(26, 26, 46, 0.95) 0%, rgba(22, 33, 62, 0.95) 50%, rgba(10, 10, 10, 0.95) 100%);
    z-index: 10000;
    display: flex;
    align-items: center;
    justify-content: center;
    backdrop-filter: blur(10px);
    animation: introFadeIn 0.5s ease-out;
}

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

.intro-container {
    background: linear-gradient(145deg, rgba(255, 255, 255, 0.1) 0%, rgba(255, 255, 255, 0.05) 100%);
    border: 2px solid #00fff7;
    border-radius: 20px;
    padding: 2em;
    max-width: 90vw;
    max-height: 90vh;
    width: 500px;
    text-align: center;
    position: relative;
    box-shadow: 0 20px 60px rgba(0, 255, 247, 0.3);
    animation: introSlideIn 0.6s ease-out 0.2s both;
}

@keyframes introSlideIn {
    from { 
        transform: translateY(50px) scale(0.9);
        opacity: 0;
    }
    to { 
        transform: translateY(0) scale(1);
        opacity: 1;
    }
}

.intro-container h2 {
    color: #00fff7;
    margin-bottom: 1em;
    text-shadow: 0 0 10px #00fff7;
    font-size: 1.8em;
}

.intro-container h3 {
    color: #ff00de;
    margin-bottom: 0.5em;
    font-size: 1.3em;
}

.intro-container p {
    color: #fff;
    line-height: 1.6;
    margin-bottom: 1em;
}

.intro-features {
    text-align: left;
    margin: 1.5em 0;
    padding: 1em;
    background: rgba(0, 0, 0, 0.2);
    border-radius: 10px;
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.intro-features li {
    margin: 0.5em 0;
    color: #fff;
    list-style: none;
    position: relative;
    padding-left: 2em;
}

.intro-features li:before {
    content: "✨";
    position: absolute;
    left: 0;
    color: #00fff7;
}

.intro-navigation {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-top: 2em;
    gap: 1em;
}

.intro-btn {
    padding: 0.8em 1.5em;
    border: none;
    border-radius: 25px;
    font-weight: bold;
    cursor: pointer;
    transition: all 0.3s ease;
    text-decoration: none;
    display: inline-block;
    font-size: 1em;
}

.intro-btn-primary {
    background: linear-gradient(135deg, #ff00de 0%, #00fff7 100%);
    color: #fff;
}

.intro-btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 25px rgba(255, 0, 222, 0.4);
}

.intro-btn-secondary {
    background: rgba(255, 255, 255, 0.1);
    color: #fff;
    border: 1px solid rgba(255, 255, 255, 0.3);
}

.intro-btn-secondary:hover {
    background: rgba(255, 255, 255, 0.2);
}

.intro-btn-skip {
    background: none;
    color: #aaa;
    border: none;
    font-size: 0.9em;
    cursor: pointer;
    text-decoration: underline;
}

.intro-btn-skip:hover {
    color: #fff;
}

.intro-progress {
    display: flex;
    justify-content: center;
    gap: 0.5em;
    margin: 1em 0;
}

.intro-dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.3);
    transition: all 0.3s ease;
}

.intro-dot.active {
    background: #00fff7;
    box-shadow: 0 0 10px #00fff7;
}

.intro-highlight {
    position: fixed;
    border: 3px solid #00fff7;
    border-radius: 10px;
    box-shadow: 0 0 20px rgba(0, 255, 247, 0.6);
    pointer-events: none;
    z-index: 9999;
    transition: all 0.3s ease;
    animation: introHighlightPulse 2s infinite;
}

@keyframes introHighlightPulse {
    0%, 100% { 
        box-shadow: 0 0 20px rgba(0, 255, 247, 0.6);
        border-color: #00fff7;
    }
    50% { 
        box-shadow: 0 0 30px rgba(0, 255, 247, 0.9);
        border-color: rgba(0, 255, 247, 0.8);
    }
}

.intro-demo-container {
    margin: 1em 0;
    padding: 1em;
    background: rgba(0, 0, 0, 0.3);
    border-radius: 10px;
    border: 1px solid rgba(0, 255, 247, 0.3);
}

.intro-demo-drink {
    display: flex;
    align-items: center;
    gap: 1em;
    padding: 0.5em;
    background: rgba(255, 255, 255, 0.05);
    border-radius: 8px;
    margin: 0.5em 0;
}

.intro-demo-drink .emoji {
    font-size: 2em;
}

.intro-animation {
    animation: introGlow 2s ease-in-out infinite alternate;
}

@keyframes introGlow {
    from { 
        text-shadow: 0 0 5px currentColor;
    }
    to { 
        text-shadow: 0 0 20px currentColor, 0 0 30px currentColor;
    }
}

/* Mobile responsiveness */
@media (max-width: 768px) {
    .intro-container {
        width: 95vw;
        padding: 1.5em;
        max-height: 95vh;
        overflow-y: auto;
    }
    
    .intro-container h2 {
        font-size: 1.5em;
    }
    
    .intro-navigation {
        flex-direction: column;
        gap: 0.5em;
    }
    
    .intro-btn {
        width: 100%;
        padding: 1em;
    }
}