:root {
    --primary-color: #D4AF37;
    /* Luxurious Gold */
    --secondary-color: #0A1F44;
    /* Deep Royal Blue */
    --accent-color: #F4E4BC;
    /* Light Gold/Cream */
    --text-color: #333333;
    /* Dark Charcoal */
    --light-text: #666666;
    /* Medium Grey */
    --bg-color: #FAF9F6;
    /* Off-White / Cream */
    --card-bg: #FFFFFF;
    /* White */
    --border-color: #D4AF37;
    /* Gold Border */
    --hover-shadow: 0 10px 25px rgba(10, 31, 68, 0.15);
    /* Elegant shadow */
}

body {
    font-family: 'Lora', serif;
    margin: 0;
    padding: 0;
    background-color: var(--bg-color);
    color: var(--text-color);
    line-height: 1.8;
    /* Increased line height for elegance */
}

/* Header */
header {
    background-color: var(--card-bg);
    border-bottom: 3px solid var(--primary-color);
    padding: 3rem 0;
    text-align: center;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
}

header h1 {
    font-family: 'Lora', serif;
    color: var(--secondary-color);
    margin: 0;
    font-size: 3.5rem;
    /* Larger, more prominent title */
    letter-spacing: 1px;
    font-style: italic;
}

header p {
    font-family: 'Lora', serif;
    color: var(--primary-color);
    margin-top: 0.5rem;
    font-size: 1.2rem;
    text-transform: uppercase;
    letter-spacing: 2px;
    font-weight: 300;
}

/* Navigation Buttons */
nav {
    margin-top: 2.5rem;
}

nav button {
    background: transparent;
    border: 1px solid var(--primary-color);
    color: var(--secondary-color);
    padding: 0.8rem 2.5rem;
    margin: 0 1rem;
    font-family: 'Lora', serif;
    font-size: 1.1rem;
    cursor: pointer;
    transition: all 0.4s ease;
    text-transform: uppercase;
    letter-spacing: 1px;
    position: relative;
    overflow: hidden;
}

nav button:hover {
    background-color: var(--primary-color);
    color: white;
    box-shadow: 0 5px 15px rgba(212, 175, 55, 0.3);
}

nav button.active {
    background-color: var(--secondary-color);
    border-color: var(--secondary-color);
    color: var(--primary-color);
}

/* Main Content */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
}

section {
    padding: 4rem 0;
    /* More vertical space */
    display: block;
}

/* Toggle visibility utility */
.hidden {
    display: none;
}

h2 {
    font-family: 'Lora', serif;
    color: var(--secondary-color);
    border-bottom: 2px solid var(--primary-color);
    /* Underline instead of side border */
    display: inline-block;
    padding-bottom: 0.5rem;
    margin-bottom: 1rem;
    font-size: 2.5rem;
}

.subtitle {
    font-family: 'Lora', serif;
    color: var(--light-text);
    margin-bottom: 3rem;
    font-style: italic;
    font-size: 1.2rem;
}

.conclusion-text {
    font-family: 'Lora', serif;
    color: var(--secondary-color);
    margin-top: 4rem;
    text-align: center;
    font-size: 1.3rem;
    font-style: italic;
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
}

/* Grid Layout */
.grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    /* Slightly wider cards */
    gap: 2.5rem;
    /* More space between cards */
}

/* Flip Card Container */
.card {
    background: transparent;
    perspective: 1000px;
}

.card-inner {
    position: relative;
    width: 100%;
    height: 100%;
    transition: transform 0.8s;
    transform-style: preserve-3d;
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.03);
    border: 1px solid rgba(212, 175, 55, 0.3);
    /* Subtle gold border */
    background: var(--card-bg);
}

.card.is-flipped .card-inner {
    transform: rotateY(180deg);
    box-shadow: var(--hover-shadow);
    border-color: var(--primary-color);
}

.card:hover .card-inner {
    box-shadow: var(--hover-shadow);
    border-color: var(--primary-color);
}

.card-front,
.card-back {
    -webkit-backface-visibility: hidden;
    backface-visibility: hidden;
    background: var(--card-bg);
    display: flex;
    flex-direction: column;
}

.card-front {
    position: relative;
    z-index: 2;
    width: 100%;
    height: 100%;
    overflow-y: auto;
}

.card-front::-webkit-scrollbar {
    width: 6px;
}

.card-front::-webkit-scrollbar-thumb {
    background-color: var(--primary-color);
    border-radius: 4px;
}

.card-back {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    transform: rotateY(180deg);
    overflow-y: auto;
}

.card-back::-webkit-scrollbar {
    width: 6px;
}

.card-back::-webkit-scrollbar-thumb {
    background-color: var(--primary-color);
    border-radius: 4px;
}

.card-back .example-text {
    font-size: 1.3rem;
    font-style: italic;
    color: var(--secondary-color);
}

.card-back .story-text {
    font-size: 0.95rem;
    line-height: 1.5;
    font-style: normal;
    color: var(--text-color);
    margin-top: 0.25rem;
}

.card-back .card-content,
.card-front .card-content.story-padding {
    padding: 1.5rem 1rem;
}

.card-back hr {
    margin: 1rem auto !important;
}

.card-back .cree-word {
    font-size: 1.5rem;
}

.card-back .english-word {
    margin-bottom: 0.5rem;
    padding-bottom: 0.5rem;
}

.card-image {
    height: 220px;
    /* Taller images */
    width: 100%;
    background-color: var(--secondary-color);
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    position: relative;
}

.card-image::after {
    /* Overlay for elegance */
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(to bottom, transparent 70%, rgba(10, 31, 68, 0.2));
    opacity: 0;
    transition: opacity 0.3s ease;
}

.card:hover .card-image::after {
    opacity: 1;
}

.card-image img {
    width: 100%;
    height: 100%;
    object-fit: contain;
    color: var(--secondary-color);
    font-family: 'Lora', serif;
}

.card-content {
    padding: 2.5rem 2rem;
    /* Increased padding */
    flex-grow: 1;
    text-align: center;
    /* Centered text feels more formal/luxurious */
    display: flex;
    flex-direction: column;
    justify-content: flex-start;
    /* Changed from center to prevent top overflow clipping */
}

.cree-word {
    font-family: 'Lora', serif;
    font-size: 2rem;
    font-weight: 700;
    /* Bold */
    color: var(--secondary-color);
    margin-bottom: 0.2rem;
    letter-spacing: 0.5px;
}

.pronunciation {
    font-family: 'Lora', serif;
    font-size: 1.1rem;
    color: var(--primary-color);
    font-style: italic;
    margin-bottom: 0.5rem;
}

.english-word {
    font-family: 'Lora', serif;
    font-size: 1.1rem;
    font-weight: 400;
    color: var(--primary-color);
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: 1.5rem;
    border-bottom: 1px solid var(--accent-color);
    padding-bottom: 1rem;
    display: inline-block;
}

.definition {
    font-family: 'Lora', serif;
    /* Serif for body text in luxury contexts works well */
    font-size: 1.05rem;
    color: var(--text-color);
    font-style: italic;
    min-height: 100px;
    margin-top: 1rem;
    line-height: 1.8;
}

/* Footer */
footer {
    background-color: var(--secondary-color);
    color: var(--primary-color);
    text-align: center;
    padding: 3rem 0;
    margin-top: 5rem;
    font-family: 'Lora', serif;
    letter-spacing: 1px;
}

/* Responsive adjustments */
@media (max-width: 600px) {
    header h1 {
        font-size: 2.5rem;
    }

    header p {
        font-size: 1rem;
    }

    .grid {
        grid-template-columns: 1fr;
    }

    nav button {
        padding: 0.6rem 1.5rem;
        margin: 0.5rem;
        font-size: 0.9rem;
    }
}