style.css

:root {
    --primary-color: #2d2d2d;
    --accent-color: #c0392b;
    --bg-color: #f7f3e9;
    --card-bg: #ffffff;
    --changing-color: #808080;
}

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

body {
    font-family: "Noto Serif", Georgia, serif;
    background: var(--bg-color);
    color: var(--primary-color);
    line-height: 1.6;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    align-items: center;
    width: 100%;
    overflow-x: hidden;
}

.header {
    text-align: center;
    padding: 2rem 1rem;
    background: #2d2d2d;
    color: var(--bg-color);
    width: 100%;
    margin-bottom: 2rem;
}

h1 {
    font-size: clamp(1.5rem, 5vw, 2.5rem);
    margin: 0;
    font-weight: 300;
    letter-spacing: 0.2em;
}

.subtitle {
    font-style: italic;
    margin-top: 1rem;
    opacity: 0.8;
}

.container {
    width: min(90%, 800px);
    margin: 0 auto;
    padding: 1rem;
}

.oracle-card {
    background: var(--card-bg);
    padding: clamp(1rem, 5vw, 2.5rem);
    border-radius: 15px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    margin-bottom: 2rem;
    width: 100%;
}

.question-container {
    margin-bottom: 2rem;
    width: 100%;
}

textarea {
    width: 100%;
    padding: 1.5rem;
    border: 1px solid #ddd;
    border-radius: 8px;
    font-size: 1.1rem;
    margin-bottom: 1rem;
    resize: vertical;
    min-height: 100px;
    font-family: inherit;
    background: rgba(247, 243, 233, 0.5);
    transition: all 0.3s ease;
}

textarea:focus {
    outline: none;
    border-color: var(--accent-color);
    box-shadow: 0 0 10px rgba(192, 57, 43, 0.1);
}

.hexagram {
    margin: 2rem 0;
    padding: 1rem;
    background: rgba(247, 243, 233, 0.5);
    border-radius: 10px;
    text-align: center;
}

.hexagram-title {
    font-size: clamp(1.2rem, 4vw, 1.5rem);
    margin-bottom: 2rem;
    color: var(--accent-color);
}

.line {
    margin: 12px auto;
    height: 24px;
    display: flex;
    justify-content: center;
    gap: 15px;
    transition: all 0.3s ease;
    max-width: 180px;
}

.yang {
    width: 100%;
    height: 24px;
    background: var(--primary-color);
    border-radius: 2px;
    transition: all 0.3s ease;
}

.yin {
    width: calc(50% - 7.5px);
    height: 24px;
    background: var(--primary-color);
    border-radius: 2px;
    transition: all 0.3s ease;
}

.changing .yang,
.changing .yin {
    background: var(--changing-color);
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0% { opacity: 1; }
    50% { opacity: 0.6; }
    100% { opacity: 1; }
}

button {
    display: block;
    width: 100%;
    padding: 1.2rem;
    font-size: clamp(1rem, 3vw, 1.2rem);
    cursor: pointer;
    background: var(--primary-color);
    color: var(--bg-color);
    border: none;
    border-radius: 8px;
    transition: all 0.3s ease;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    margin: 2rem 0;
}

button:hover {
    background: var(--accent-color);
    transform: translateY(-2px);
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
}

button:disabled {
    background: #95a5a6;
    cursor: not-allowed;
    transform: none;
}

.numbers {
    text-align: center;
    font-family: monospace;
    font-size: clamp(0.9rem, 2.5vw, 1.1rem);
    margin: 1.5rem 0;
    color: var(--accent-color);
    word-break: break-word;
}

.loading {
    text-align: center;
    padding: 2rem;
    font-style: italic;
    color: var(--accent-color);
}

.error {
    color: var(--accent-color);
    text-align: center;
    padding: 1.5rem;
    background: rgba(192, 57, 43, 0.1);
    border-radius: 8px;
    margin: 1rem 0;
}

.hexagram-meaning {
    margin-top: 1rem;
    padding: 1rem;
    font-style: italic;
    color: var(--primary-color);
    opacity: 0.8;
    word-wrap: break-word;
}

.hexagram-meaning a {
    color: var(--accent-color);
    text-decoration: none;
    transition: all 0.3s ease;
}

.hexagram-meaning a:hover {
    text-decoration: underline;
    opacity: 0.8;
}

.changing-lines-text {
    margin-top: 1rem;
    padding: 1rem;
    background: rgba(247, 243, 233, 0.8);
    border-radius: 8px;
    font-size: clamp(0.8rem, 2.5vw, 0.9rem);
    word-wrap: break-word;
}

.unchanging-note {
    margin-top: 1rem;
    padding: 1rem;
    font-style: italic;
    color: var(--accent-color);
    text-align: center;
}