/*
 * Yodao — AI Trading Terminal for Robinhood
 * Royal Blue Tech Palette derived from official Yodao Logo (#103880)
 */

:root {
    --bg-dark: #060b18;
    --bg-dark-card: #0d1730;
    --bg-card-hover: #132042;
    
    --royal-blue: #1652f0;
    --royal-blue-glow: rgba(22, 82, 240, 0.35);
    --blue-logo: #103880;
    
    --cyan-accent: #00f0ff;
    --cyan-glow: rgba(0, 240, 255, 0.25);
    --emerald-accent: #00c805;
    
    --text-primary: #ffffff;
    --text-secondary: #94a3b8;
    --text-muted: #64748b;
    
    --border-color: #1a294d;
    --border-glow: rgba(22, 82, 240, 0.4);

    --radius-sm: 8px;
    --radius-md: 14px;
    --radius-lg: 20px;

    --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    --font-mono: 'JetBrains Mono', monospace;

    --transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
}

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

body {
    background-color: var(--bg-dark);
    color: var(--text-primary);
    font-family: var(--font-sans);
    line-height: 1.6;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
}

/* Custom Scrollbar */
::-webkit-scrollbar {
    width: 8px;
}
::-webkit-scrollbar-track {
    background: var(--bg-dark);
}
::-webkit-scrollbar-thumb {
    background: #1a294d;
    border-radius: 4px;
}
::-webkit-scrollbar-thumb:hover {
    background: var(--royal-blue);
}

/* Navbar */
.navbar {
    background-color: rgba(6, 11, 24, 0.92);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border-color);
    padding: 1rem 0;
    position: sticky;
    top: 0;
    z-index: 1000;
}

.navbar-brand {
    font-weight: 800;
    font-size: 1.5rem;
    color: #ffffff !important;
    letter-spacing: -0.03em;
    display: flex;
    align-items: center;
    gap: 0.75rem;
    text-decoration: none;
}

.navbar-brand img.logo-img {
    width: 36px;
    height: 36px;
    border-radius: 8px;
    object-fit: cover;
    box-shadow: 0 0 16px var(--royal-blue-glow);
    transition: var(--transition);
}

.navbar-brand:hover img.logo-img {
    transform: scale(1.06) rotate(3deg);
}

.nav-link {
    font-weight: 500;
    color: var(--text-secondary) !important;
    font-size: 0.9rem;
    letter-spacing: 0.05em;
    padding: 0.5rem 1rem !important;
    transition: var(--transition);
}

.nav-link:hover {
    color: #ffffff !important;
}

.btn-yodao {
    background: linear-gradient(135deg, var(--royal-blue) 0%, #1a5cff 100%);
    color: #ffffff !important;
    font-weight: 700;
    font-size: 0.9rem;
    padding: 0.65rem 1.4rem;
    border-radius: var(--radius-sm);
    border: none;
    transition: var(--transition);
    box-shadow: 0 4px 20px var(--royal-blue-glow);
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
}

.btn-yodao:hover {
    background: linear-gradient(135deg, #1d5eff 0%, #2b6bff 100%);
    box-shadow: 0 0 28px rgba(0, 240, 255, 0.4);
    transform: translateY(-2px);
}

.btn-yodao-outline {
    background-color: rgba(255, 255, 255, 0.04);
    color: #ffffff !important;
    font-weight: 600;
    font-size: 0.9rem;
    padding: 0.65rem 1.4rem;
    border-radius: var(--radius-sm);
    border: 1px solid var(--border-color);
    transition: var(--transition);
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
}

.btn-yodao-outline:hover {
    background-color: rgba(255, 255, 255, 0.08);
    border-color: var(--royal-blue);
    color: var(--cyan-accent) !important;
}

/* Hero Section */
.hero-section {
    padding: 6.5rem 0 5.5rem;
    position: relative;
    background: radial-gradient(circle at 50% 20%, rgba(22, 82, 240, 0.18) 0%, transparent 65%);
}

.hero-section h1 {
    font-size: clamp(2.5rem, 5.5vw, 4.5rem);
    font-weight: 800;
    letter-spacing: -0.03em;
    line-height: 1.1;
    color: #ffffff;
    text-transform: uppercase;
}

.hero-lead {
    font-size: 1.25rem;
    color: var(--text-secondary);
    max-width: 640px;
    margin: 0 auto;
}

/* Terminal Showcase Container */
.terminal-showcase {
    background: var(--bg-dark-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 1.75rem;
    margin-top: 3.5rem;
    box-shadow: 0 20px 60px rgba(6, 11, 24, 0.8);
    position: relative;
    overflow: hidden;
}

.terminal-showcase::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 2px;
    background: linear-gradient(90deg, transparent, var(--royal-blue), var(--cyan-accent), transparent);
}

.terminal-top-bar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding-bottom: 1rem;
    border-bottom: 1px solid var(--border-color);
    margin-bottom: 1.5rem;
}

.terminal-dots {
    display: flex;
    gap: 6px;
}

.dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
}
.dot-red { background: #ff5f56; }
.dot-yellow { background: #ffbd2e; }
.dot-green { background: #27c93f; }

/* Section General */
.section-padding {
    padding: 6rem 0;
}

.section-tag {
    font-size: 0.8rem;
    font-weight: 700;
    color: var(--cyan-accent);
    text-transform: uppercase;
    letter-spacing: 0.1em;
    display: block;
    margin-bottom: 0.75rem;
}

/* Yodao Cards */
.yodao-card {
    background: var(--bg-dark-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 2.25rem;
    height: 100%;
    transition: var(--transition);
    display: flex;
    flex-direction: column;
}

.yodao-card:hover {
    background: var(--bg-card-hover);
    border-color: var(--border-glow);
    box-shadow: 0 10px 35px rgba(22, 82, 240, 0.15);
    transform: translateY(-4px);
}

.yodao-card .card-icon {
    width: 48px;
    height: 48px;
    background: rgba(22, 82, 240, 0.12);
    border: 1px solid rgba(0, 240, 255, 0.25);
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--cyan-accent);
    font-size: 1.35rem;
    margin-bottom: 1.5rem;
}

.yodao-card h3 {
    font-size: 1.3rem;
    font-weight: 700;
    color: #ffffff;
    margin-bottom: 0.75rem;
}

.yodao-card p {
    color: var(--text-secondary);
    font-size: 0.95rem;
    margin: 0;
}

/* Metric Display */
.metric-box {
    background: var(--bg-dark-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 2rem;
    text-align: center;
}

.metric-number {
    font-size: 3rem;
    font-weight: 800;
    color: #ffffff;
    line-height: 1;
    margin-bottom: 0.5rem;
}

/* FAQ Accordion */
.accordion-item {
    background-color: var(--bg-dark-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm) !important;
    margin-bottom: 0.75rem;
    overflow: hidden;
}

.accordion-button {
    background-color: var(--bg-dark-card);
    color: #ffffff;
    font-weight: 600;
    box-shadow: none !important;
}

.accordion-button:not(.collapsed) {
    background-color: #111e3b;
    color: var(--cyan-accent);
}

.accordion-body {
    background-color: #060b18;
    color: var(--text-secondary);
    border-top: 1px solid var(--border-color);
}

/* CTA Banner */
.cta-banner {
    background: linear-gradient(135deg, #0d1730 0%, #152752 100%);
    border: 1px solid var(--border-glow);
    border-radius: var(--radius-lg);
    padding: 4rem 3rem;
}

/* Footer */
footer {
    background-color: #03060d;
    border-top: 1px solid var(--border-color);
    padding: 4rem 0 2rem;
    color: var(--text-muted);
    font-size: 0.9rem;
}

footer h5 {
    color: #ffffff;
    font-size: 0.95rem;
    margin-bottom: 1.25rem;
}

footer a {
    color: var(--text-secondary);
    text-decoration: none;
    transition: var(--transition);
}

footer a:hover {
    color: var(--cyan-accent);
}

footer ul {
    list-style: none;
    padding: 0;
    margin: 0;
}

footer ul li {
    margin-bottom: 0.75rem;
}