/* BTC Signals Pro - Stylesheet */

:root {
    --color-bg: #0d1117;
    --color-bg-secondary: #161b22;
    --color-bg-tertiary: #21262d;
    --color-text: #c9d1d9;
    --color-text-secondary: #8b949e;
    --color-border: #30363d;
    --color-accent: #f7931a;
    --color-accent-hover: #e07b00;
    --color-success: #238636;
    --color-danger: #da3633;
    --color-warning: #9e6a03;
    --color-buy: #3fb950;
    --color-sell: #f85149;
    --color-neutral: #8b949e;
    --font-main: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --font-mono: 'SF Mono', Monaco, monospace;
    --radius: 8px;
    --shadow: 0 4px 12px rgba(0, 0, 0, 0.4);
}

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

body {
    font-family: var(--font-main);
    background-color: var(--color-bg);
    color: var(--color-text);
    line-height: 1.6;
    min-height: 100vh;
}

/* Navigation */
.navbar {
    background: var(--color-bg-secondary);
    border-bottom: 1px solid var(--color-border);
    padding: 1rem 0;
    position: sticky;
    top: 0;
    z-index: 100;
}

.navbar .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--color-accent);
    text-decoration: none;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.logo::before {
    content: "₿";
    font-size: 1.75rem;
}

.nav-links {
    display: flex;
    gap: 2rem;
    list-style: none;
}

.nav-links a {
    color: var(--color-text);
    text-decoration: none;
    font-weight: 500;
    transition: color 0.2s;
}

.nav-links a:hover {
    color: var(--color-accent);
}

.nav-auth {
    display: flex;
    gap: 1rem;
    align-items: center;
}

/* Container */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1.5rem;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
    margin-bottom: 1rem;
    line-height: 1.3;
}

h1 { font-size: 2.5rem; }
h2 { font-size: 2rem; }
h3 { font-size: 1.5rem; }

p {
    margin-bottom: 1rem;
    color: var(--color-text-secondary);
}

.text-center { text-align: center; }
.text-accent { color: var(--color-accent); }
.text-muted { color: var(--color-text-secondary); }

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.75rem 1.5rem;
    border-radius: var(--radius);
    font-weight: 600;
    font-size: 1rem;
    cursor: pointer;
    transition: all 0.2s;
    text-decoration: none;
    border: none;
    gap: 0.5rem;
}

.btn-primary {
    background: var(--color-accent);
    color: #000;
}

.btn-primary:hover {
    background: var(--color-accent-hover);
    transform: translateY(-1px);
    box-shadow: var(--shadow);
}

.btn-secondary {
    background: transparent;
    color: var(--color-text);
    border: 1px solid var(--color-border);
}

.btn-secondary:hover {
    background: var(--color-bg-tertiary);
    border-color: var(--color-accent);
}

.btn-large {
    padding: 1rem 2rem;
    font-size: 1.1rem;
}

.btn-block {
    width: 100%;
}

/* Hero Section */
.hero {
    padding: 5rem 0;
    text-align: center;
    background: linear-gradient(180deg, var(--color-bg-secondary) 0%, var(--color-bg) 100%);
    border-bottom: 1px solid var(--color-border);
}

.hero h1 {
    font-size: 3rem;
    margin-bottom: 1.5rem;
    background: linear-gradient(90deg, #fff 0%, var(--color-accent) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero p {
    font-size: 1.25rem;
    max-width: 600px;
    margin: 0 auto 2rem;
}

.hero-cta {
    display: flex;
    gap: 1rem;
    justify-content: center;
    margin-top: 2rem;
}

/* Features Section */
.features {
    padding: 4rem 0;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
}

.feature-card {
    background: var(--color-bg-secondary);
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    padding: 2rem;
    transition: transform 0.2s, border-color 0.2s;
}

.feature-card:hover {
    transform: translateY(-4px);
    border-color: var(--color-accent);
}

.feature-icon {
    font-size: 2.5rem;
    margin-bottom: 1rem;
}

.feature-card h3 {
    color: #fff;
    margin-bottom: 0.5rem;
}

/* Pricing Section */
.pricing {
    padding: 4rem 0;
}

.pricing-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 1.5rem;
    margin-top: 3rem;
}

.pricing-card {
    background: var(--color-bg-secondary);
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    padding: 2rem;
    position: relative;
    transition: transform 0.2s;
}

.pricing-card.featured {
    border-color: var(--color-accent);
    transform: scale(1.05);
}

.pricing-card.featured::before {
    content: "MOST POPULAR";
    position: absolute;
    top: -12px;
    left: 50%;
    transform: translateX(-50%);
    background: var(--color-accent);
    color: #000;
    padding: 0.25rem 1rem;
    font-size: 0.75rem;
    font-weight: 700;
    border-radius: 20px;
}

.pricing-header {
    text-align: center;
    margin-bottom: 2rem;
}

.pricing-header h3 {
    font-size: 1.5rem;
    color: #fff;
}

.price {
    font-size: 3rem;
    font-weight: 700;
    color: var(--color-accent);
}

.price span {
    font-size: 1rem;
    color: var(--color-text-secondary);
    font-weight: 400;
}

.pricing-features {
    list-style: none;
    margin-bottom: 2rem;
}

.pricing-features li {
    padding: 0.5rem 0;
    border-bottom: 1px solid var(--color-border);
    color: var(--color-text-secondary);
}

.pricing-features li::before {
    content: "✓";
    color: var(--color-success);
    margin-right: 0.5rem;
    font-weight: bold;
}

.pricing-features li.exclude::before {
    content: "✗";
    color: var(--color-danger);
}

/* Forms */
.form-group {
    margin-bottom: 1.5rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 500;
    color: var(--color-text);
}

.form-control {
    width: 100%;
    padding: 0.75rem 1rem;
    background: var(--color-bg-tertiary);
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    color: var(--color-text);
    font-size: 1rem;
    transition: border-color 0.2s;
}

.form-control:focus {
    outline: none;
    border-color: var(--color-accent);
}

.form-card {
    max-width: 450px;
    margin: 3rem auto;
    background: var(--color-bg-secondary);
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    padding: 2.5rem;
}

.form-card h2 {
    text-align: center;
    margin-bottom: 0.5rem;
}

.form-card p {
    text-align: center;
    margin-bottom: 2rem;
}

/* Alerts */
.alert {
    padding: 1rem 1.25rem;
    border-radius: var(--radius);
    margin-bottom: 1.5rem;
    border-left: 4px solid;
}

.alert-success {
    background: rgba(35, 134, 54, 0.1);
    border-color: var(--color-success);
    color: #7ee787;
}

.alert-error {
    background: rgba(218, 54, 51, 0.1);
    border-color: var(--color-danger);
    color: #ff7b72;
}

.alert-info {
    background: rgba(47, 129, 247, 0.1);
    border-color: #58a6ff;
    color: #79c0ff;
}

.alert-warning {
    background: rgba(158, 106, 3, 0.1);
    border-color: var(--color-warning);
    color: #d29922;
}

/* Tier Badges */
.tier-badge {
    display: inline-block;
    padding: 0.25rem 0.75rem;
    border-radius: 20px;
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
}

.badge-free { background: var(--color-bg-tertiary); color: var(--color-text-secondary); }
.badge-basic { background: #1f6feb; color: #fff; }
.badge-premium { background: #8957e5; color: #fff; }
.badge-vip { background: var(--color-accent); color: #000; }

/* Dashboard */
.dashboard {
    padding: 2rem 0;
}

.dashboard-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 2rem;
    padding-bottom: 1rem;
    border-bottom: 1px solid var(--color-border);
}

.dashboard-grid {
    display: grid;
    grid-template-columns: 280px 1fr;
    gap: 2rem;
}

.sidebar {
    background: var(--color-bg-secondary);
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    padding: 1.5rem;
    height: fit-content;
}

.sidebar-menu {
    list-style: none;
}

.sidebar-menu li {
    margin-bottom: 0.5rem;
}

.sidebar-menu a {
    display: block;
    padding: 0.75rem 1rem;
    color: var(--color-text);
    text-decoration: none;
    border-radius: var(--radius);
    transition: background 0.2s;
}

.sidebar-menu a:hover,
.sidebar-menu a.active {
    background: var(--color-bg-tertiary);
    color: var(--color-accent);
}

.main-content {
    background: var(--color-bg-secondary);
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    padding: 2rem;
}

/* Signal Display */
.signal-card {
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    padding: 2rem;
    margin-bottom: 2rem;
}

.signal-header {
    text-align: center;
    margin-bottom: 2rem;
}

.signal-direction {
    font-size: 3rem;
    margin: 1rem 0;
}

.signal-direction.buy { color: var(--color-buy); }
.signal-direction.sell { color: var(--color-sell); }
.signal-direction.neutral { color: var(--color-neutral); }

.signal-metrics {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 1rem;
    margin-top: 2rem;
}

.metric {
    background: var(--color-bg-secondary);
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    padding: 1rem;
    text-align: center;
}

.metric-label {
    font-size: 0.75rem;
    color: var(--color-text-secondary);
    text-transform: uppercase;
    margin-bottom: 0.5rem;
}

.metric-value {
    font-size: 1.5rem;
    font-weight: 700;
    color: #fff;
}

.confidence-bar {
    height: 8px;
    background: var(--color-bg-tertiary);
    border-radius: 4px;
    overflow: hidden;
    margin-top: 1rem;
}

.confidence-fill {
    height: 100%;
    background: var(--color-accent);
    border-radius: 4px;
    transition: width 0.5s ease;
}

/* Tables */
.table-container {
    overflow-x: auto;
}

.table {
    width: 100%;
    border-collapse: collapse;
}

.table th,
.table td {
    padding: 1rem;
    text-align: left;
    border-bottom: 1px solid var(--color-border);
}

.table th {
    color: var(--color-text-secondary);
    font-weight: 600;
    text-transform: uppercase;
    font-size: 0.75rem;
}

.table tr:hover {
    background: var(--color-bg-tertiary);
}

/* Footer */
.footer {
    background: var(--color-bg-secondary);
    border-top: 1px solid var(--color-border);
    padding: 3rem 0;
    margin-top: 4rem;
    text-align: center;
}

.footer p {
    color: var(--color-text-secondary);
    margin-bottom: 0.5rem;
}

.footer-links {
    display: flex;
    justify-content: center;
    gap: 1.5rem;
    margin-top: 1rem;
}

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

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

/* Utilities */
.mb-1 { margin-bottom: 0.5rem; }
.mb-2 { margin-bottom: 1rem; }
.mb-3 { margin-bottom: 1.5rem; }
.mb-4 { margin-bottom: 2rem; }

.mt-1 { margin-top: 0.5rem; }
.mt-2 { margin-top: 1rem; }
.mt-3 { margin-top: 1.5rem; }
.mt-4 { margin-top: 2rem; }

/* Mobile Responsive */
@media (max-width: 768px) {
    .navbar .container {
        flex-wrap: wrap;
    }
    
    .nav-links {
        display: none;
    }
    
    .hero h1 {
        font-size: 2rem;
    }
    
    .hero p {
        font-size: 1rem;
    }
    
    .hero-cta {
        flex-direction: column;
        align-items: center;
    }
    
    .pricing-card.featured {
        transform: none;
    }
    
    .dashboard-grid {
        grid-template-columns: 1fr;
    }
    
    .sidebar {
        order: -1;
    }
    
    .signal-metrics {
        grid-template-columns: repeat(2, 1fr);
    }
}

/* BTC Price Widget */
.btc-price-widget {
    background: linear-gradient(135deg, #1a1a2e 0%, #16213e 100%);
    border-radius: 16px;
    padding: 24px;
    color: #fff;
    margin-bottom: 24px;
    border: 1px solid #2a2a4a;
}

.btc-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 12px;
}

.btc-label {
    font-size: 18px;
    font-weight: 600;
}

.btc-symbol {
    background: #2a2a4a;
    padding: 4px 12px;
    border-radius: 20px;
    font-size: 12px;
    color: #888;
}

.btc-price {
    font-size: 42px;
    font-weight: 700;
    margin: 16px 0 8px;
}

.btc-change {
    font-size: 18px;
    font-weight: 600;
    margin-bottom: 20px;
}

.btc-change.positive { color: #00d4aa; }
.btc-change.negative { color: #ff4757; }

.btc-change-abs {
    font-size: 14px;
    color: #888;
    margin-left: 8px;
}

.btc-stats {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 12px;
    padding: 16px 0;
    border-top: 1px solid #2a2a4a;
    border-bottom: 1px solid #2a2a4a;
}

.stat {
    text-align: center;
}

.stat-label {
    display: block;
    font-size: 11px;
    color: #888;
    text-transform: uppercase;
    margin-bottom: 4px;
}

.stat-value {
    font-size: 14px;
    font-weight: 600;
}

.btc-averages {
    display: flex;
    justify-content: space-between;
    margin-top: 16px;
    font-size: 12px;
    color: #666;
}