:root {
    --bg-color: #ffffff;
    --text-color: #1a1a1a;
    --accent-color: #000000;
    --header-bg: #ffffff;
    --card-border: #e5e7eb;
    --footer-bg: #f9fafb;
    --footer-text: #6b7280;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Pretendard', -apple-system, BlinkMacSystemFont, system-ui, Roboto, sans-serif;
    line-height: 1.6;
    margin: 0;
    padding: 0;
    background-color: var(--bg-color);
    color: var(--text-color);
    min-height: 100vh;
}

header {
    background-color: var(--header-bg);
    color: var(--text-color);
    padding: 2.5rem 0;
    text-align: center;
    position: sticky;
    top: 0;
    z-index: 100;
    border-bottom: 1px solid var(--card-border);
}

header h1 {
    margin: 0;
    font-size: 2.5rem;
    font-weight: 900;
    letter-spacing: -0.05em;
    color: #000;
}

header p {
    opacity: 0.6;
    font-weight: 500;
    margin-top: 0.5rem;
}

main {
    max-width: 100%;
    margin: 0 auto;
}

.dashboard-grid {
    display: flex;
    flex-direction: column;
}

.chart-section {
    width: 100%;
}

.chart-section h2 {
    background-color: #f8f9fa;
    margin: 0;
    padding: 1.5rem 2rem;
    font-size: 1.25rem;
    font-weight: 700;
    border-bottom: 1px solid var(--card-border);
    color: #000;
}

.tradingview-widget-container {
    height: 700px;
    width: 100%;
    /* Remove all borders, shadows, and radii to eliminate "shape" and gaps */
    border: none;
    margin: 0;
    padding: 0;
    display: block;
}

#contact-form-section {
    padding: 5rem 2rem;
    max-width: 600px;
    margin: 5rem auto;
    border: 1px solid var(--card-border);
    border-radius: 20px;
}

#contact-form-section h2 {
    font-size: 2rem;
    text-align: center;
    margin-bottom: 2.5rem;
    font-weight: 800;
}

.form-group label {
    display: block;
    font-size: 0.9rem;
    margin-bottom: 0.5rem;
    font-weight: 600;
}

.form-group input,
.form-group textarea {
    width: 100%;
    background-color: #fff;
    border: 1px solid var(--card-border);
    border-radius: 8px;
    padding: 0.75rem 1rem;
    color: var(--text-color);
    font-family: inherit;
    box-sizing: border-box;
    transition: all 0.2s;
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: #000;
}

.submit-btn {
    width: 100%;
    background: #000;
    color: #fff;
    border: none;
    border-radius: 8px;
    padding: 1rem;
    font-size: 1rem;
    font-weight: 700;
    cursor: pointer;
    transition: opacity 0.2s;
}

.submit-btn:hover {
    opacity: 0.8;
}

#disqus_thread {
    padding: 4rem 2rem;
    max-width: 1000px;
    margin: 0 auto;
}

footer {
    background-color: var(--footer-bg);
    color: var(--footer-text);
    padding: 4rem 0;
    text-align: center;
    border-top: 1px solid var(--card-border);
}