/* PI Trading Bot Website - Global Styles */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800&family=JetBrains+Mono:wght@400;500&display=swap');

:root {
    --bg: #0a0a0a;
    --bg-alt: #0f0f0f;
    --card: #18181b;
    --card-hover: #1f1f23;
    --border: #27272a;
    --text: #fafafa;
    --text-secondary: #d4d4d8;
    --muted: #a1a1aa;
    --accent: #8b5cf6;
    --accent-light: #a78bfa;
    --accent-dark: #6d28d9;
    --accent-glow: rgba(139, 92, 246, 0.3);
    --green: #22c55e;
    --green-dark: #16a34a;
    --red: #ef4444;
    --yellow: #eab308;
    --blue: #3b82f6;
    --cyan: #06b6d4;
    --orange: #f97316;
    --gradient-primary: linear-gradient(135deg, var(--accent) 0%, var(--accent-dark) 100%);
    --gradient-hero: linear-gradient(135deg, #1a1a2e 0%, #0a0a0a 50%, #1a0a2e 100%);
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    background: var(--bg);
    color: var(--text);
    line-height: 1.6;
    font-size: 16px;
    overflow-x: hidden;
}

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

.container-wide {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 1.5rem;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
    font-weight: 700;
    line-height: 1.2;
    color: var(--text);
}

h1 { font-size: clamp(2.5rem, 5vw, 4rem); }
h2 { font-size: clamp(2rem, 4vw, 3rem); }
h3 { font-size: clamp(1.5rem, 3vw, 2rem); }
h4 { font-size: 1.25rem; }

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

a {
    color: var(--accent-light);
    text-decoration: none;
    transition: color 0.2s;
}

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

/* Navigation */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(10, 10, 10, 0.8);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border);
    padding: 0.75rem 0;
    transition: all 0.3s;
}

.navbar.scrolled {
    background: rgba(10, 10, 10, 0.95);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
}

.nav-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 1.5rem;
}

.nav-logo {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--text);
    text-decoration: none;
}

.nav-logo .icon { font-size: 1.75rem; }
.nav-logo span { color: var(--accent); }

.nav-links {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    list-style: none;
}

.nav-links a {
    padding: 0.5rem 1rem;
    color: var(--muted);
    font-size: 0.9rem;
    font-weight: 500;
    border-radius: 0.5rem;
    transition: all 0.2s;
}

.nav-links a:hover {
    color: var(--text);
    background: rgba(255, 255, 255, 0.05);
}

.nav-links a.active {
    color: var(--accent-light);
    background: rgba(139, 92, 246, 0.1);
}

.nav-cta {
    padding: 0.5rem 1.25rem !important;
    background: var(--gradient-primary) !important;
    color: white !important;
    border-radius: 0.5rem;
}

.nav-cta:hover {
    opacity: 0.9;
    transform: translateY(-1px);
}

/* Mobile Menu */
.mobile-toggle {
    display: none;
    background: none;
    border: none;
    color: var(--text);
    font-size: 1.5rem;
    cursor: pointer;
    padding: 0.5rem;
}

@media (max-width: 768px) {
    .mobile-toggle { display: block; }
    
    .nav-links {
        position: fixed;
        top: 60px;
        left: 0;
        right: 0;
        background: var(--bg);
        flex-direction: column;
        padding: 1rem;
        border-bottom: 1px solid var(--border);
        transform: translateY(-100%);
        opacity: 0;
        visibility: hidden;
        transition: all 0.3s;
    }
    
    .nav-links.active {
        transform: translateY(0);
        opacity: 1;
        visibility: visible;
    }
    
    .nav-links a {
        width: 100%;
        padding: 1rem;
        text-align: center;
    }
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.75rem 1.5rem;
    font-size: 0.95rem;
    font-weight: 600;
    border-radius: 0.5rem;
    border: none;
    cursor: pointer;
    transition: all 0.2s;
    text-decoration: none;
}

.btn-primary {
    background: var(--gradient-primary);
    color: white;
    box-shadow: 0 4px 15px var(--accent-glow);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 25px var(--accent-glow);
    color: white;
}

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

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

.btn-outline {
    background: transparent;
    color: var(--accent-light);
    border: 1px solid var(--accent);
}

.btn-outline:hover {
    background: rgba(139, 92, 246, 0.1);
    color: var(--accent-light);
}

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

.btn-sm {
    padding: 0.5rem 1rem;
    font-size: 0.85rem;
}

/* Hero Section */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: 6rem 1.5rem 4rem;
    background: var(--gradient-hero);
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: 
        radial-gradient(circle at 30% 30%, rgba(139, 92, 246, 0.15) 0%, transparent 40%),
        radial-gradient(circle at 70% 70%, rgba(34, 197, 94, 0.08) 0%, transparent 40%),
        radial-gradient(circle at 50% 50%, rgba(6, 182, 212, 0.05) 0%, transparent 50%);
    animation: heroGlow 15s ease-in-out infinite;
}

@keyframes heroGlow {
    0%, 100% { opacity: 0.5; transform: rotate(0deg); }
    50% { opacity: 1; transform: rotate(180deg); }
}

.hero-content {
    position: relative;
    z-index: 1;
    max-width: 800px;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem 1rem;
    background: rgba(139, 92, 246, 0.15);
    border: 1px solid rgba(139, 92, 246, 0.3);
    border-radius: 9999px;
    font-size: 0.85rem;
    color: var(--accent-light);
    margin-bottom: 1.5rem;
}

.hero-title {
    margin-bottom: 1.5rem;
}

.hero-title .highlight {
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: 1.25rem;
    color: var(--muted);
    margin-bottom: 2rem;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.hero-buttons {
    display: flex;
    gap: 1rem;
    justify-content: center;
    flex-wrap: wrap;
    margin-bottom: 3rem;
}

.hero-stats {
    display: flex;
    gap: 3rem;
    justify-content: center;
    flex-wrap: wrap;
    padding-top: 2rem;
    border-top: 1px solid var(--border);
}

.hero-stat {
    text-align: center;
}

.hero-stat .value {
    font-size: 2rem;
    font-weight: 800;
    color: var(--text);
}

.hero-stat .value.accent { color: var(--accent-light); }
.hero-stat .value.green { color: var(--green); }

.hero-stat .label {
    font-size: 0.85rem;
    color: var(--muted);
}

/* Sections */
.section {
    padding: 5rem 0;
}

.section-alt {
    background: var(--bg-alt);
}

.section-header {
    text-align: center;
    margin-bottom: 3rem;
}

.section-header .subtitle {
    color: var(--accent-light);
    font-size: 0.9rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    margin-bottom: 0.5rem;
}

.section-header h2 {
    margin-bottom: 1rem;
}

.section-header p {
    max-width: 600px;
    margin: 0 auto;
    color: var(--muted);
}

/* Cards */
.card {
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: 1rem;
    padding: 1.5rem;
    transition: all 0.3s;
}

.card:hover {
    border-color: var(--accent);
    transform: translateY(-4px);
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.3);
}

.card-icon {
    width: 3rem;
    height: 3rem;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(139, 92, 246, 0.15);
    border-radius: 0.75rem;
    font-size: 1.5rem;
    margin-bottom: 1rem;
}

.card h4 {
    margin-bottom: 0.5rem;
}

.card p {
    color: var(--muted);
    font-size: 0.9rem;
    margin: 0;
}

/* Feature Grid */
.feature-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 1.5rem;
}

/* Strategy Cards */
.strategy-card {
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: 1rem;
    padding: 1.5rem;
    position: relative;
    overflow: hidden;
}

.strategy-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: var(--gradient-primary);
}

.strategy-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 1rem;
}

.strategy-weight {
    padding: 0.25rem 0.75rem;
    background: rgba(139, 92, 246, 0.2);
    color: var(--accent-light);
    border-radius: 9999px;
    font-size: 0.8rem;
    font-weight: 600;
}

.strategy-tags {
    display: flex;
    gap: 0.5rem;
    flex-wrap: wrap;
    margin-top: 1rem;
}

.strategy-tag {
    padding: 0.25rem 0.5rem;
    background: var(--bg);
    border-radius: 0.25rem;
    font-size: 0.75rem;
    color: var(--muted);
}

/* Tables */
.table-container {
    overflow-x: auto;
    border-radius: 0.75rem;
    border: 1px solid var(--border);
}

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

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

th {
    background: var(--card);
    color: var(--muted);
    font-weight: 600;
    font-size: 0.85rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

td { color: var(--text-secondary); }

tr:last-child td { border-bottom: none; }

tr:hover td { background: rgba(255, 255, 255, 0.02); }

/* Changelog */
.changelog-item {
    position: relative;
    padding-left: 2rem;
    padding-bottom: 2rem;
    border-left: 2px solid var(--border);
}

.changelog-item:last-child { padding-bottom: 0; }

.changelog-item::before {
    content: '';
    position: absolute;
    left: -8px;
    top: 0;
    width: 14px;
    height: 14px;
    background: var(--accent);
    border-radius: 50%;
    border: 3px solid var(--bg);
}

.changelog-version {
    display: inline-flex;
    align-items: center;
    gap: 0.75rem;
    margin-bottom: 0.5rem;
}

.changelog-version h3 {
    font-size: 1.25rem;
}

.changelog-date {
    font-size: 0.85rem;
    color: var(--muted);
}

.changelog-tag {
    padding: 0.2rem 0.6rem;
    border-radius: 0.25rem;
    font-size: 0.75rem;
    font-weight: 600;
}

.changelog-tag.new { background: rgba(34, 197, 94, 0.2); color: var(--green); }
.changelog-tag.improved { background: rgba(59, 130, 246, 0.2); color: var(--blue); }
.changelog-tag.fixed { background: rgba(234, 179, 8, 0.2); color: var(--yellow); }

.changelog-list {
    list-style: none;
    margin-top: 1rem;
}

.changelog-list li {
    padding: 0.5rem 0;
    padding-left: 1.5rem;
    position: relative;
    color: var(--text-secondary);
    font-size: 0.95rem;
}

.changelog-list li::before {
    content: '→';
    position: absolute;
    left: 0;
    color: var(--accent);
}

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

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

.form-group input,
.form-group textarea,
.form-group select {
    width: 100%;
    padding: 0.875rem 1rem;
    background: var(--bg);
    border: 1px solid var(--border);
    border-radius: 0.5rem;
    color: var(--text);
    font-size: 1rem;
    font-family: inherit;
    transition: all 0.2s;
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
    outline: none;
    border-color: var(--accent);
    box-shadow: 0 0 0 3px var(--accent-glow);
}

.form-group textarea {
    min-height: 150px;
    resize: vertical;
}

.form-hint {
    font-size: 0.85rem;
    color: var(--muted);
    margin-top: 0.5rem;
}

.form-row {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1rem;
}

/* Captcha */
.captcha-box {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1rem;
    background: var(--bg);
    border: 1px solid var(--border);
    border-radius: 0.5rem;
    margin-bottom: 1.5rem;
}

.captcha-question {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--accent-light);
}

.captcha-input {
    width: 80px !important;
    text-align: center;
    font-size: 1.1rem;
    font-weight: 600;
}

.captcha-refresh {
    background: none;
    border: none;
    color: var(--muted);
    cursor: pointer;
    font-size: 1.25rem;
    padding: 0.5rem;
    transition: color 0.2s;
}

.captcha-refresh:hover { color: var(--accent); }

/* Contact Info */
.contact-info {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.contact-item {
    display: flex;
    align-items: flex-start;
    gap: 1rem;
}

.contact-item .icon {
    width: 2.5rem;
    height: 2.5rem;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(139, 92, 246, 0.15);
    border-radius: 0.5rem;
    font-size: 1.25rem;
    flex-shrink: 0;
}

.contact-item h4 {
    margin-bottom: 0.25rem;
}

.contact-item p {
    margin: 0;
    color: var(--muted);
    font-size: 0.9rem;
}

/* Footer */
.footer {
    background: var(--bg-alt);
    border-top: 1px solid var(--border);
    padding: 4rem 0 2rem;
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr repeat(3, 1fr);
    gap: 3rem;
    margin-bottom: 3rem;
}

@media (max-width: 768px) {
    .footer-grid {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
}

.footer-brand p {
    color: var(--muted);
    margin: 1rem 0;
    max-width: 300px;
}

.footer-social {
    display: flex;
    gap: 0.75rem;
}

.footer-social a {
    width: 2.5rem;
    height: 2.5rem;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: 0.5rem;
    color: var(--muted);
    font-size: 1.25rem;
    transition: all 0.2s;
}

.footer-social a:hover {
    background: var(--accent);
    border-color: var(--accent);
    color: white;
}

.footer-column h4 {
    margin-bottom: 1rem;
    font-size: 0.9rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--text);
}

.footer-links {
    list-style: none;
}

.footer-links li { margin-bottom: 0.5rem; }

.footer-links a {
    color: var(--muted);
    font-size: 0.9rem;
    transition: color 0.2s;
}

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

.footer-bottom {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: 2rem;
    border-top: 1px solid var(--border);
    font-size: 0.85rem;
    color: var(--muted);
}

@media (max-width: 768px) {
    .footer-bottom {
        flex-direction: column;
        gap: 1rem;
        text-align: center;
    }
}

/* Utilities */
.text-center { text-align: center; }
.text-accent { color: var(--accent-light); }
.text-green { color: var(--green); }
.text-muted { color: var(--muted); }
.mb-0 { margin-bottom: 0; }
.mb-1 { margin-bottom: 0.5rem; }
.mb-2 { margin-bottom: 1rem; }
.mb-3 { margin-bottom: 1.5rem; }
.mb-4 { margin-bottom: 2rem; }
.mt-4 { margin-top: 2rem; }

/* Animations */
.fade-in {
    opacity: 0;
    transform: translateY(20px);
    animation: fadeIn 0.6s ease forwards;
}

@keyframes fadeIn {
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.fade-in-delay-1 { animation-delay: 0.1s; }
.fade-in-delay-2 { animation-delay: 0.2s; }
.fade-in-delay-3 { animation-delay: 0.3s; }

/* Alert/Toast */
.alert {
    padding: 1rem 1.5rem;
    border-radius: 0.5rem;
    margin-bottom: 1rem;
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.alert-success {
    background: rgba(34, 197, 94, 0.15);
    border: 1px solid rgba(34, 197, 94, 0.3);
    color: var(--green);
}

.alert-error {
    background: rgba(239, 68, 68, 0.15);
    border: 1px solid rgba(239, 68, 68, 0.3);
    color: var(--red);
}

.alert-warning {
    background: rgba(234, 179, 8, 0.15);
    border: 1px solid rgba(234, 179, 8, 0.3);
    color: var(--yellow);
}

/* Page Header */
.page-header {
    padding: 8rem 0 4rem;
    background: var(--gradient-hero);
    text-align: center;
    position: relative;
    overflow: hidden;
}

.page-header::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle at 50% 50%, rgba(139, 92, 246, 0.1) 0%, transparent 50%);
}

.page-header .container {
    position: relative;
    z-index: 1;
}

.page-header h1 {
    margin-bottom: 1rem;
}

.page-header p {
    color: var(--muted);
    max-width: 600px;
    margin: 0 auto;
}

/* Breadcrumb */
.breadcrumb {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.9rem;
    margin-bottom: 1rem;
    justify-content: center;
}

.breadcrumb a { color: var(--muted); }
.breadcrumb a:hover { color: var(--accent-light); }
.breadcrumb span { color: var(--muted); }
.breadcrumb .current { color: var(--text); }

/* Code blocks */
code {
    font-family: 'JetBrains Mono', monospace;
    background: var(--bg);
    padding: 0.2rem 0.5rem;
    border-radius: 0.25rem;
    font-size: 0.9em;
    color: var(--cyan);
}

pre {
    background: var(--bg);
    border: 1px solid var(--border);
    border-radius: 0.5rem;
    padding: 1rem;
    overflow-x: auto;
    margin: 1rem 0;
}

pre code {
    background: none;
    padding: 0;
}

/* Scrollbar */
::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

::-webkit-scrollbar-track {
    background: var(--bg);
}

::-webkit-scrollbar-thumb {
    background: var(--border);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--muted);
}