/* Base styles and variables */
:root {
    --primary-color: #63aa87; /* Darker sage green */
    --secondary-color: #6d9baa; /* Darker blue-gray */
    --accent-color: #4a6c62; /* Dark sage */
    --dark-accent: #376E84; /* Darker teal */
    --text-color: #E0E0E0;
    --subtext-color: #A0A0A0;
    --background-color: #121212;
    --card-color: #1E1E1E;
    --card-hover: #252525;
    --shadow: 0 3px 6px rgba(0, 0, 0, 0.3);
    --border-radius: 12px;
    --transition: all 0.4s ease;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Noto Sans', 'Segoe UI', sans-serif;
}

body {
    background-color: var(--background-color);
    color: var(--text-color);
    line-height: 1.6;
}

.container {
    max-width: 800px;
    margin: 40px auto;
    padding: 20px;
}

/* Header styles */
header {
    text-align: center;
    margin-bottom: 40px;
    padding: 30px 0;
    position: relative;
    overflow: hidden;
}

header h1 {
    color: var(--primary-color);
    font-size: 2.5rem;
    margin-bottom: 10px;
    position: relative;
    display: inline-block;
    font-weight: 400;
    letter-spacing: 1px;
}

header h1::after {
    content: '';
    position: absolute;
    bottom: -8px;
    left: 10%;
    width: 80%;
    height: 2px;
    background: linear-gradient(90deg, transparent, var(--secondary-color), transparent);
}

.tagline {
    font-size: 1.2rem;
    color: var(--secondary-color);
    font-style: italic;
    opacity: 0.8;
}

/* Intro section */
#intro {
    margin-bottom: 35px;
}

.intro-text {
    font-size: 1.1rem;
    text-align: center;
    color: var(--subtext-color);
    line-height: 1.8;
    font-weight: 300;
}

/* Card styles */
.card {
    background-color: var(--card-color);
    border-radius: var(--border-radius);
    box-shadow: var(--shadow);
    padding: 30px;
    margin-bottom: 35px;
    transition: var(--transition);
    border: 1px solid rgba(255,255,255,0.03);
}

.card:hover {
    transform: translateY(-3px);
    box-shadow: 0 5px 10px rgba(0, 0, 0, 0.2);
    background-color: var(--card-hover);
}

.card h2 {
    color: var(--secondary-color);
    margin-bottom: 25px;
    border-bottom: 1px solid var(--accent-color);
    padding-bottom: 12px;
    font-size: 1.5rem;
    display: flex;
    align-items: center;
    font-weight: 500;
}

.card h2 i {
    margin-right: 12px;
    color: var(--primary-color);
    opacity: 0.9;
}

/* Challenge section */
#challenge-content {
    text-align: center;
}

#challenge-text {
    font-size: 1.3rem;
    margin-bottom: 30px;
    line-height: 1.6;
    color: var(--text-color);
}

.primary-btn {
    background-color: var(--primary-color);
    color: #FFFFFF;
    border: none;
    padding: 12px 28px;
    border-radius: 30px;
    font-size: 1.05rem;
    cursor: pointer;
    transition: var(--transition);
    font-weight: 500;
    box-shadow: 0 3px 6px rgba(0, 0, 0, 0.3);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    letter-spacing: 0.5px;
}

.primary-btn i {
    margin-right: 10px;
}

.primary-btn:hover {
    background-color: #548e70;
    transform: scale(1.03);
}

/* Reward section */
#reward-section {
    text-align: center;
}

#reward-image-container {
    width: 100%;
    height: 200px;
    margin: 20px 0;
    display: flex;
    justify-content: center;
    align-items: center;
    overflow: hidden;
    border-radius: 10px;
    background-color: #2a2a2a;
}

#reward-image {
    max-width: 100%;
    max-height: 100%;
    object-fit: contain;
}

#reward-text {
    font-size: 1.2rem;
    margin-bottom: 20px;
    font-style: italic;
    color: var(--subtext-color);
}

.share-container {
    margin-top: 20px;
    color: var(--subtext-color);
}

.share-buttons {
    display: flex;
    justify-content: center;
    gap: 10px;
    margin-top: 10px;
}

.share-btn {
    padding: 8px 15px;
    border: none;
    border-radius: 5px;
    background-color: var(--accent-color);
    color: var(--text-color);
    cursor: pointer;
    transition: var(--transition);
    display: flex;
    align-items: center;
}

.share-btn i {
    margin-right: 5px;
}

.share-btn:hover {
    background-color: var(--dark-accent);
    color: white;
}

/* Stats section */
#stats-content {
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    gap: 15px;
}

.stat-item {
    flex-basis: calc(33% - 15px);
    text-align: center;
    padding: 15px;
    background-color: #252525;
    border-radius: 10px;
}

.stat-label {
    display: block;
    font-size: 0.9rem;
    color: var(--subtext-color);
    margin-bottom: 5px;
}

.stat-value {
    font-size: 1.8rem;
    font-weight: bold;
    color: var(--primary-color);
}

/* Map section */
#joy-map {
    height: 300px;
    background-color: #e8e8e8;
    border-radius: 10px;
    margin-bottom: 15px;
    display: flex;
    justify-content: center;
    align-items: center;
    font-size: 1.2rem;
    color: #999;
}

.map-info {
    text-align: center;
    font-size: 0.9rem;
    color: #777;
}

/* Streak section */
#streak-section {
    text-align: center;
}

.streak-container {
    margin-bottom: 20px;
}

.streak-number {
    display: flex;
    flex-direction: column;
    align-items: center;
    margin-bottom: 15px;
}

#streak-count {
    font-size: 3rem;
    font-weight: bold;
    color: var(--secondary-color);
    text-shadow: 1px 1px 3px rgba(0,0,0,0.1);
}

.streak-label {
    font-size: 1rem;
    color: #777;
}

.streak-message {
    font-size: 1rem;
    color: #555;
}

.streak-calendar {
    display: flex;
    justify-content: space-between;
    margin-top: 20px;
}

.streak-day {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background-color: #f0f0f0;
    display: flex;
    justify-content: center;
    align-items: center;
    font-size: 0.8rem;
    color: #777;
}

.streak-day.completed {
    background-color: var(--secondary-color);
    color: white;
    font-weight: bold;
}

/* Footer */
footer {
    text-align: center;
    padding: 20px 0;
    color: var(--subtext-color);
    font-size: 0.9rem;
}

/* Temporary thumbnail that appears for 5 seconds */
.temp-thumbnail {
    position: fixed;
    bottom: 30px;
    right: 30px;
    background-color: var(--card-color);
    border-radius: var(--border-radius);
    box-shadow: var(--shadow);
    padding: 15px;
    z-index: 100;
    cursor: pointer;
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.3s ease, transform 0.3s ease;
    border: 1px solid rgba(255,255,255,0.05);
    max-width: 200px;
}

.temp-thumbnail.visible {
    opacity: 1;
    transform: translateY(0);
}

.thumbnail-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
}

.thumbnail-image {
    width: 60px;
    height: 60px;
    margin-bottom: 10px;
    transition: transform 0.3s ease;
}

.temp-thumbnail:hover .thumbnail-image {
    transform: scale(1.1);
}

.temp-thumbnail p {
    font-size: 0.9rem;
    color: var(--text-color);
    margin: 5px 0;
}

.close-btn {
    position: absolute;
    top: 5px;
    right: 5px;
    color: var(--subtext-color);
    font-size: 0.8rem;
    padding: 5px;
    cursor: pointer;
}

.close-btn:hover {
    color: var(--text-color);
}

/* Utility classes */
.hidden {
    display: none;
}

/* Splash Screen Overlay */
.splash-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0,0,0,0.9);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 2000;
    opacity: 1;
    transition: opacity 0.6s ease;
}

.splash-overlay.hidden {
    opacity: 0;
    pointer-events: none;
}

.splash-content {
    position: relative;
    width: 100%;
    height: 100%;
    display: flex;
    justify-content: center;
    align-items: center;
}

.splash-content img {
    max-width: 90%;
    max-height: 90%;
    object-fit: contain;
    box-shadow: 0 10px 30px rgba(0,0,0,0.5);
    border-radius: 8px;
}

.splash-close-btn {
    position: absolute;
    top: 20px;
    right: 20px;
    width: 40px;
    height: 40px;
    background-color: rgba(0,0,0,0.5);
    border-radius: 50%;
    display: flex;
    justify-content: center;
    align-items: center;
    color: #fff;
    font-size: 1.2rem;
    cursor: pointer;
    transition: background-color 0.3s ease;
}

.splash-close-btn:hover {
    background-color: rgba(255,255,255,0.2);
}

/* Responsive styles */
@media (max-width: 768px) {
    .container {
        padding: 15px;
    }
    
    header h1 {
        font-size: 2rem;
    }
    
    .tagline {
        font-size: 1rem;
    }
    
    #challenge-text {
        font-size: 1.1rem;
    }
    
    .card {
        padding: 20px;
    }
    
    .stat-item {
        flex-basis: 100%;
    }
    
    #joy-map {
        height: 250px;
    }
    
    .streak-calendar {
        flex-wrap: wrap;
        gap: 10px;
        justify-content: center;
    }
    
    .streak-day {
        width: 35px;
        height: 35px;
    }
    
    .splash-close-btn {
        top: 10px;
        right: 10px;
        width: 35px;
        height: 35px;
    }
}

/* Animation - more subtle */
@keyframes pulse {
    0% { transform: scale(1); }
    50% { transform: scale(1.03); }
    100% { transform: scale(1); }
}

.pulse {
    animation: pulse 3s ease infinite;
}

/* Welcome modal with dark theme */
.welcome-modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0,0,0,0.7);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 1000;
    opacity: 1;
    transition: opacity 0.5s ease;
}

.modal-content {
    background-color: var(--card-color);
    padding: 40px;
    border-radius: 15px;
    max-width: 500px;
    text-align: center;
    box-shadow: 0 5px 30px rgba(0,0,0,0.3);
}

.modal-content h2 {
    color: var(--primary-color);
    margin-bottom: 20px;
    font-weight: 400;
}

.modal-content p {
    margin-bottom: 15px;
    color: var(--text-color);
}

.modal-content ul {
    text-align: left;
    margin: 20px 0;
    padding-left: 20px;
}

.modal-content li {
    margin-bottom: 8px;
    color: var(--text-color);
}

.welcome-image {
    width: 150px;
    margin: 20px auto;
    display: block;
}