/* =========================================
   Harrison Arbitrage LLC - Global Styles
   ========================================= */
:root {
    --bg-light: #fcfcfc;
    --nav-bg: #ffffff;
    --text-primary: #1a1a1a;
    --text-secondary: #555555;
    --accent-gold: #b38b4d;
    --accent-silver: #8a8d91;
    --border-light: #e5e7eb;
}

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

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    background-color: var(--bg-light);
    color: var(--text-primary);
    line-height: 1.6;
    /* Subtle geometric fractal/network background pattern */
    background-image: radial-gradient(var(--border-light) 1px, transparent 1px);
    background-size: 24px 24px;
}

/* --- Navigation (Desktop Sticky Sidebar) --- */
.sidebar {
    position: fixed;
    top: 0;
    left: 0;
    width: 280px;
    height: 100vh;
    background-color: var(--nav-bg);
    border-right: 1px solid var(--border-light);
    display: flex;
    flex-direction: column;
    padding: 2rem 0;
    z-index: 1000;
    box-shadow: 2px 0 10px rgba(0,0,0,0.02);
}

.brand-logo {
    width: 80%;
    margin: 0 auto 2rem auto;
    display: block;
}

.nav-menu {
    display: flex;
    flex-direction: column;
    width: 100%;
}

.nav-menu a {
    text-decoration: none;
    color: var(--text-primary);
    padding: 1rem 2rem;
    font-weight: 600;
    letter-spacing: 0.5px;
    border-left: 4px solid transparent;
    transition: all 0.3s ease;
}

.nav-menu a:hover, .nav-menu a.active {
    background-color: #f9f9f9;
    color: var(--accent-gold);
    border-left: 4px solid var(--accent-gold);
}

/* --- Main Content Area --- */
.main-content {
    margin-left: 280px;
    padding: 3rem;
    max-width: 1200px;
}

.hero-banner {
    width: 100%;
    border-radius: 12px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.05);
    margin-bottom: 3rem;
    object-fit: cover;
}

h1, h2, h3 {
    margin-bottom: 1rem;
    font-weight: 700;
}

h1 { font-size: 2.5rem; color: var(--text-primary); }
h2 { font-size: 1.8rem; border-bottom: 2px solid var(--border-light); padding-bottom: 0.5rem; }

p {
    color: var(--text-secondary);
    margin-bottom: 1.5rem;
    font-size: 1.1rem;
}
/* --- Horizontal Series Layouts --- */
.series-box {
    background: var(--nav-bg);
    border: 1px solid var(--border-light);
    border-radius: 8px;
    padding: 1.5rem;
    margin-bottom: 2rem;
    box-shadow: 0 4px 6px rgba(0,0,0,0.02);
}

.series-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 1rem;
    margin-bottom: 1.25rem;
    border-bottom: 1px solid var(--border-light);
    padding-bottom: 0.75rem;
}

.series-header h3 {
    margin-bottom: 0;
    font-size: 1.4rem;
}

.series-link {
    color: var(--accent-gold);
    font-weight: 600;
    text-decoration: none;
    transition: color 0.3s ease;
}

.series-link:hover {
    text-decoration: underline;
    color: #9a753e;
}

.horizontal-card-box {
    display: flex;
    gap: 1.5rem;
    overflow-x: auto;
    padding-bottom: 0.5rem;
    -webkit-overflow-scrolling: touch;
}

.horizontal-card-box .card {
    flex: 0 0 280px;
    margin-top: 0;
}
/* --- Layouts & Cards --- */
.grid-container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin-top: 2rem;
}

.card {
    background: var(--nav-bg);
    border: 1px solid var(--border-light);
    border-radius: 8px;
    padding: 2rem;
    box-shadow: 0 4px 6px rgba(0,0,0,0.02);
    border-top: 4px solid var(--accent-silver);
    transition: transform 0.3s ease;
}

.card:hover {
    transform: translateY(-5px);
    border-top: 4px solid var(--accent-gold);
}

.card img {
    width: 100%;
    border-radius: 4px;
    margin-bottom: 1rem;
}

.responsive-img {
  max-height: 184px; /* Restricts the vertical size */
  height: auto;      /* Keeps the image from stretching out of proportion */
  max-width: 116px;   /* Optional: keeps it responsive horizontally too */
  width: auto;      /* Keeps the image from stretching out of proportion */
}

.btn {
    display: inline-block;
    padding: 0.75rem 1.5rem;
    background-color: var(--accent-gold);
    color: #fff;
    text-decoration: none;
    border-radius: 4px;
    font-weight: 600;
    margin-top: 1rem;
    transition: background 0.3s ease;
}

.btn:hover { background-color: #9a753e; }

/* --- Forms --- */
.contact-form {
    display: flex;
    flex-direction: column;
    gap: 1.2rem;
    max-width: 600px;
}

.contact-form input, .contact-form textarea {
    width: 100%;
    padding: 1rem;
    border: 1px solid var(--border-light);
    border-radius: 6px;
    font-family: inherit;
    font-size: 1rem;
}

.contact-form button {
    cursor: pointer;
    border: none;
    font-size: 1.1rem;
}

/* =========================================
   Mobile Optimization (RWD Media Queries)
   ========================================= */
@media screen and (max-width: 900px) {
    /* Transform Sidebar into Top-Anchored Horizontal Swipe Menu */
    .sidebar {
        position: sticky;
        top: 0;
        width: 100%;
        height: auto;
        flex-direction: row;
        align-items: center;
        padding: 0;
        box-shadow: 0 4px 10px rgba(0,0,0,0.05);
        overflow-x: auto;
        white-space: nowrap;
        -webkit-overflow-scrolling: touch; /* Smooth iOS scrolling */
    }

    .brand-logo {
        width: 120px;
        margin: 0.5rem 1.5rem;
        flex-shrink: 0;
    }

    .nav-menu {
        flex-direction: row;
        width: auto;
    }

    .nav-menu a {
        border-left: none;
        border-bottom: 3px solid transparent;
        padding: 1.2rem 1.5rem;
    }

    .nav-menu a:hover, .nav-menu a.active {
        border-left: none;
        border-bottom: 3px solid var(--accent-gold);
    }

    /* Adjust Main Content & Typography for Narrow Screens */
    .main-content {
        margin-left: 0;
        padding: 1.5rem;
    }

    h1 { font-size: 2rem; }
    h2 { font-size: 1.5rem; }
    
    /* Stack content vertically */
    .grid-container {
        grid-template-columns: 1fr; 
    }
}