/* ===================================
   CSS Variables & Theme System
   =================================== */
:root {
    /* Colors - Light Mode */
    --primary: #F59E0B;
    --primary-hover: #D97706;
    --background-light: #F3F4F6;
    --surface-light: #FFFFFF;
    --text-light: #1F2937;
    --text-secondary-light: #6B7280;
    --border-light: #E5E7EB;

    /* Colors - Dark Mode */
    --background-dark: #0D1117;
    --surface-dark: #161B22;
    --text-dark: #E5E7EB;
    --text-secondary-dark: #9CA3AF;
    --border-dark: #30363D;

    /* Applied Theme Colors */
    --bg-primary: var(--background-dark);
    --bg-surface: var(--surface-dark);
    --text-primary: var(--text-dark);
    --text-secondary: var(--text-secondary-dark);
    --border-color: var(--border-dark);

    /* Typography */
    --font-display: 'Poppins', sans-serif;

    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
    --spacing-2xl: 4rem;

    /* Border Radius */
    --radius-sm: 0.375rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;

    /* Shadows */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1);

    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-base: 300ms ease;
    --transition-slow: 500ms ease;
}

/* Light Mode */
body.light-mode {
    --bg-primary: var(--background-light);
    --bg-surface: var(--surface-light);
    --text-primary: var(--text-light);
    --text-secondary: var(--text-secondary-light);
    --border-color: var(--border-light);
}

/* ===================================
   Base Styles
   =================================== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-display);
    background-color: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    transition: background-color var(--transition-base), color var(--transition-base);
}

.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1rem;
}

@media (min-width: 768px) {
    .container {
        padding: 0 1.5rem;
    }
}

img {
    max-width: 100%;
    height: auto;
}

a {
    text-decoration: none;
    color: inherit;
    transition: color var(--transition-fast);
}

/* ===================================
   Typography
   =================================== */
h1, h2, h3, h4, h5, h6 {
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: var(--spacing-md);
}

h1 { font-size: 2.5rem; }
h2 { font-size: 2rem; }
h3 { font-size: 1.5rem; }
h4 { font-size: 1.25rem; }

@media (min-width: 768px) {
    h1 { font-size: 3.5rem; }
    h2 { font-size: 2.5rem; }
    h3 { font-size: 1.75rem; }
}

.section-title {
    text-align: center;
    margin-bottom: var(--spacing-xl);
}

.section-intro {
    text-align: center;
    font-size: 1.125rem;
    color: var(--text-secondary);
    max-width: 700px;
    margin: 0 auto var(--spacing-xl);
}

.lead {
    font-size: 1.25rem;
    font-weight: 500;
    margin-bottom: var(--spacing-lg);
}

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

.btn-primary {
    background-color: var(--primary);
    color: var(--background-dark);
}

.btn-primary:hover {
    background-color: var(--primary-hover);
    transform: scale(1.05);
}

.btn-secondary {
    background-color: var(--bg-surface);
    color: var(--text-primary);
    border: 2px solid var(--border-color);
}

.btn-secondary:hover {
    background-color: rgba(107, 114, 128, 0.1);
    transform: scale(1.05);
}

.btn-large {
    padding: 1rem 2rem;
    font-size: 1.125rem;
}

.glow {
    box-shadow: 0 0 10px var(--primary),
                0 0 20px var(--primary),
                0 0 30px var(--primary);
}

/* ===================================
   Header
   =================================== */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background-color: rgba(13, 17, 23, 0.9);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--border-color);
}

.header-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 1rem 0;
}

.logo {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    flex-shrink: 0;
}

.logo-icon {
    width: 1.75rem;
    height: 1.75rem;
    color: var(--primary);
}

@media (min-width: 768px) {
    .logo-icon {
        width: 2rem;
        height: 2rem;
    }
}

.logo-text {
    font-size: 1.125rem;
    font-weight: 700;
    color: #FFFFFF;
    white-space: nowrap;
}

@media (min-width: 768px) {
    .logo-text {
        font-size: 1.5rem;
    }
}

.nav-desktop {
    display: none;
    gap: 2rem;
}

/* Mobile menu active state */
@media (max-width: 767px) {
    .nav-desktop.active {
        display: flex;
        flex-direction: column;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background-color: rgba(13, 17, 23, 0.98);
        backdrop-filter: blur(10px);
        border-bottom: 1px solid var(--border-color);
        padding: 1rem;
        gap: 0.5rem;
        box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
        z-index: 999;
    }

    .nav-desktop.active a {
        padding: 0.75rem 1rem;
        border-radius: var(--radius-md);
        transition: background-color var(--transition-fast), color var(--transition-fast);
    }

    .nav-desktop.active a:hover {
        background-color: var(--bg-surface);
    }
}

@media (min-width: 768px) {
    .nav-desktop {
        display: flex;
    }
}

.nav-desktop a {
    color: var(--text-secondary);
    font-weight: 500;
    transition: color var(--transition-fast);
}

.nav-desktop a:hover {
    color: #FFFFFF;
}

.header-actions {
    display: flex;
    align-items: center;
    gap: 1rem;
}

/* Hide some buttons on mobile */
@media (max-width: 767px) {
    .header-actions .btn-primary,
    .header-actions .lang-toggle {
        display: none;
    }
}

.theme-toggle,
.lang-toggle {
    display: flex;
    align-items: center;
    gap: 0.25rem;
    background: transparent;
    border: none;
    color: var(--text-secondary);
    cursor: pointer;
    transition: color var(--transition-fast);
    padding: 0.5rem;
}

.theme-toggle:hover,
.lang-toggle:hover {
    color: #FFFFFF;
}

.mobile-menu-toggle {
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--primary);
    border: none;
    color: var(--background-dark);
    cursor: pointer;
    padding: 0.5rem;
    font-size: 1.5rem;
    border-radius: var(--radius-md);
    z-index: 1001;
    position: relative;
    transition: all var(--transition-fast);
}

.mobile-menu-toggle:hover {
    background: var(--primary-hover);
    transform: scale(1.05);
}

.mobile-menu-toggle:active {
    transform: scale(0.95);
}

.mobile-menu-toggle .material-icons {
    font-size: 1.75rem;
}

@media (min-width: 768px) {
    .mobile-menu-toggle {
        display: none;
    }
}

/* ===================================
   Hero Section
   =================================== */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    overflow: hidden;
    padding-top: 80px;
}

.hero-background {
    position: absolute;
    inset: 0;
    background-image: url('https://images.unsplash.com/photo-1639322537228-f710d846310a?q=80&w=2832&auto=format&fit=crop');
    background-size: cover;
    background-position: center;
    z-index: 0;
}

.hero-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, rgba(13, 17, 23, 0.95) 0%, rgba(13, 17, 23, 0.85) 100%);
    backdrop-filter: blur(2px);
    z-index: 1;
}

.hero-container {
    position: relative;
    z-index: 10;
    padding: var(--spacing-2xl) 0;
}

.hero-content {
    text-align: center;
    margin-bottom: var(--spacing-2xl);
}

@media (min-width: 768px) {
    .hero-container {
        display: grid;
        grid-template-columns: 1fr 1fr;
        gap: 4rem;
        align-items: center;
    }

    .hero-content {
        text-align: left;
        margin-bottom: 0;
    }
}

.hero-title {
    font-size: 2.5rem;
    line-height: 1.1;
    margin-bottom: var(--spacing-md);
    color: #FFFFFF;
}

@media (min-width: 768px) {
    .hero-title {
        font-size: 3.75rem;
    }
}

.hero-title .text-primary {
    color: var(--primary);
}

.hero-subtitle {
    font-size: 1.125rem;
    color: var(--text-secondary);
    margin-bottom: var(--spacing-lg);
}

@media (min-width: 768px) {
    .hero-subtitle {
        font-size: 1.25rem;
    }
}

.trust-badges {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 1.5rem;
    margin: var(--spacing-lg) 0;
}

@media (min-width: 768px) {
    .trust-badges {
        justify-content: flex-start;
    }
}

.badge {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.875rem;
    color: var(--text-secondary);
}

.badge .material-icons {
    color: var(--primary);
    font-size: 1.25rem;
}

.hero-cta {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 1rem;
    margin-top: var(--spacing-lg);
}

@media (min-width: 768px) {
    .hero-cta {
        justify-content: flex-start;
    }
}

/* Hero Media */
.hero-media {
    position: relative;
}

.video-container {
    background-color: var(--bg-surface);
    padding: 0.5rem;
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-xl);
}

.video-wrapper {
    position: relative;
    padding-bottom: 56.25%; /* 16:9 aspect ratio */
    height: 0;
    overflow: hidden;
    border-radius: var(--radius-lg);
}

.video-wrapper iframe {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
}

.glow-effect {
    position: absolute;
    border-radius: 50%;
    filter: blur(60px);
    opacity: 0.3;
    animation: pulse 3s ease-in-out infinite;
}

.glow-top {
    top: -2rem;
    right: -2rem;
    width: 6rem;
    height: 6rem;
    background-color: rgba(245, 158, 11, 0.3);
}

.glow-bottom {
    bottom: -2rem;
    left: -2rem;
    width: 8rem;
    height: 8rem;
    background-color: rgba(14, 165, 233, 0.3);
    animation-delay: 500ms;
}

@keyframes pulse {
    0%, 100% { opacity: 0.3; transform: scale(1); }
    50% { opacity: 0.5; transform: scale(1.1); }
}

/* ===================================
   Sections
   =================================== */
section {
    padding: var(--spacing-2xl) 0;
}

@media (min-width: 768px) {
    section {
        padding: 5rem 0;
    }
}

/* Trust Section */
.trust-section {
    background-color: var(--bg-surface);
}

.metrics-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 1.5rem;
    margin-bottom: var(--spacing-xl);
}

@media (min-width: 640px) {
    .metrics-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (min-width: 768px) {
    .metrics-grid {
        grid-template-columns: repeat(4, 1fr);
    }
}

.metric-card {
    background-color: var(--bg-primary);
    padding: var(--spacing-lg);
    border-radius: var(--radius-lg);
    text-align: center;
    border: 1px solid var(--border-color);
    transition: transform var(--transition-base), box-shadow var(--transition-base);
}

.metric-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}

.metric-icon {
    color: var(--primary);
    margin-bottom: var(--spacing-sm);
}

.metric-icon .material-icons {
    font-size: 2.5rem;
}

.metric-value {
    font-size: 2rem;
    font-weight: 700;
    color: var(--primary);
    margin-bottom: 0.25rem;
}

.metric-label {
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
}

.metric-desc {
    font-size: 0.875rem;
    color: var(--text-secondary);
}

/* Partners */
.partners {
    text-align: center;
    margin-top: var(--spacing-2xl);
}

.partners h3 {
    margin-bottom: var(--spacing-md);
    color: var(--text-secondary);
    font-size: 1rem;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.1em;
}

.partner-logos {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 2rem;
}

.partner-logo {
    padding: 1rem 2rem;
    background-color: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    font-weight: 600;
    opacity: 0.7;
    transition: opacity var(--transition-fast);
}

.partner-logo:hover {
    opacity: 1;
}

/* Community Preview */
.community-preview {
    margin-top: var(--spacing-2xl);
    text-align: center;
}

.community-preview h3 {
    margin-bottom: var(--spacing-lg);
}

.community-channels {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    max-width: 600px;
    margin: 0 auto;
}

@media (min-width: 640px) {
    .community-channels {
        flex-direction: row;
    }
}

.community-link {
    flex: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.5rem;
    padding: 1.5rem;
    background-color: var(--bg-primary);
    border: 2px solid var(--border-color);
    border-radius: var(--radius-lg);
    transition: all var(--transition-base);
}

.community-link:hover {
    border-color: var(--primary);
    transform: translateY(-3px);
}

.community-link .material-icons {
    font-size: 2rem;
    color: var(--primary);
}

.member-count {
    font-size: 0.875rem;
    color: var(--text-secondary);
}

/* How It Works Section */
.steps-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 2rem;
    margin-bottom: var(--spacing-2xl);
}

@media (min-width: 768px) {
    .steps-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (min-width: 1024px) {
    .steps-grid {
        grid-template-columns: repeat(4, 1fr);
    }
}

.step-card {
    padding: var(--spacing-lg);
    background-color: var(--bg-surface);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    transition: transform var(--transition-base);
}

.step-card:hover {
    transform: translateY(-5px);
}

.step-number {
    font-size: 2rem;
    font-weight: 700;
    color: var(--primary);
    margin-bottom: var(--spacing-sm);
}

.step-card h3 {
    margin-bottom: var(--spacing-sm);
}

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

/* Signal Example */
.signal-example {
    max-width: 600px;
    margin: 0 auto;
}

.signal-example h3 {
    text-align: center;
    margin-bottom: var(--spacing-lg);
}

.signal-card {
    background-color: var(--bg-surface);
    border: 2px solid var(--border-color);
    border-radius: var(--radius-lg);
    overflow: hidden;
}

.signal-header {
    display: flex;
    justify-content: space-between;
    padding: 1rem;
    background: linear-gradient(135deg, rgba(34, 197, 94, 0.1) 0%, rgba(34, 197, 94, 0.05) 100%);
    border-bottom: 1px solid var(--border-color);
}

.signal-type {
    padding: 0.5rem 1rem;
    background-color: rgba(34, 197, 94, 0.2);
    color: #22C55E;
    border-radius: var(--radius-sm);
    font-weight: 700;
}

.signal-pair {
    font-size: 1.25rem;
    font-weight: 700;
}

.signal-leverage {
    padding: 0.5rem 1rem;
    background-color: rgba(245, 158, 11, 0.2);
    color: var(--primary);
    border-radius: var(--radius-sm);
    font-weight: 700;
}

.signal-body {
    padding: 1.5rem;
}

.signal-row {
    display: flex;
    justify-content: space-between;
    padding: 0.75rem 0;
    border-bottom: 1px solid var(--border-color);
}

.signal-row:last-child {
    border-bottom: none;
}

.signal-row .label {
    color: var(--text-secondary);
    font-weight: 500;
}

.signal-row .value {
    font-weight: 600;
}

.signal-row .danger {
    color: #EF4444;
}

.signal-row .success {
    color: #22C55E;
}

.signal-footer {
    padding: 1rem 1.5rem;
    background-color: rgba(245, 158, 11, 0.05);
    border-top: 1px solid var(--border-color);
}

.signal-note {
    font-size: 0.875rem;
    color: var(--text-secondary);
    line-height: 1.5;
}

.signal-note strong {
    color: var(--text-primary);
}

/* Why Us Section */
.features-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 2rem;
}

@media (min-width: 640px) {
    .features-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (min-width: 1024px) {
    .features-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

.feature-card {
    padding: var(--spacing-lg);
    background-color: var(--bg-surface);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    transition: all var(--transition-base);
}

.feature-card:hover {
    transform: translateY(-5px);
    border-color: var(--primary);
}

.feature-icon {
    width: 3rem;
    height: 3rem;
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: rgba(245, 158, 11, 0.1);
    border-radius: var(--radius-md);
    margin-bottom: var(--spacing-md);
}

.feature-icon .material-icons {
    font-size: 1.5rem;
    color: var(--primary);
}

.feature-card h3 {
    margin-bottom: var(--spacing-sm);
}

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

/* Safety Section */
.safety-section {
    background-color: var(--bg-surface);
}

.safety-content {
    display: grid;
    grid-template-columns: 1fr;
    gap: 3rem;
}

@media (min-width: 768px) {
    .safety-content {
        grid-template-columns: 2fr 1fr;
    }
}

.safety-list {
    list-style: none;
    margin: var(--spacing-md) 0;
}

.safety-list li {
    padding: 0.75rem 0;
    padding-left: 2rem;
    position: relative;
    color: var(--text-secondary);
}

.safety-list li:before {
    content: "✓";
    position: absolute;
    left: 0;
    color: var(--primary);
    font-weight: 700;
    font-size: 1.25rem;
}

.disclaimer {
    margin-top: var(--spacing-lg);
    padding: var(--spacing-md);
    background-color: rgba(245, 158, 11, 0.1);
    border-left: 4px solid var(--primary);
    border-radius: var(--radius-md);
    font-size: 0.875rem;
}

.disclaimer strong {
    color: var(--primary);
}

/* Risk Meter */
.risk-meter {
    background-color: var(--bg-primary);
    padding: var(--spacing-lg);
    border-radius: var(--radius-lg);
    border: 1px solid var(--border-color);
}

.meter-header {
    font-size: 1.25rem;
    font-weight: 700;
    margin-bottom: var(--spacing-md);
    text-align: center;
}

.meter-bars {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.meter-bar {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.meter-label {
    font-size: 0.875rem;
    font-weight: 500;
}

.meter-fill {
    height: 0.5rem;
    background: linear-gradient(90deg, var(--primary) 0%, rgba(245, 158, 11, 0.5) 100%);
    border-radius: 999px;
    transition: width var(--transition-slow);
}

/* CTA Section */
.cta-section {
    background: linear-gradient(135deg, rgba(245, 158, 11, 0.1) 0%, rgba(245, 158, 11, 0.05) 100%);
    text-align: center;
}

.cta-content h2 {
    margin-bottom: var(--spacing-sm);
}

.cta-content > p {
    font-size: 1.125rem;
    color: var(--text-secondary);
    margin-bottom: var(--spacing-lg);
}

.cta-form {
    max-width: 500px;
    margin: 0 auto var(--spacing-md);
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

@media (min-width: 640px) {
    .cta-form {
        flex-direction: row;
    }
}

.cta-form input {
    flex: 1;
    padding: 1rem 1.5rem;
    border: 2px solid var(--border-color);
    border-radius: var(--radius-lg);
    background-color: var(--bg-surface);
    color: var(--text-primary);
    font-size: 1rem;
    transition: border-color var(--transition-fast);
}

.cta-form input:focus {
    outline: none;
    border-color: var(--primary);
}

.cta-form button {
    white-space: nowrap;
}

.cta-note {
    font-size: 0.875rem;
    color: var(--text-secondary);
    margin-bottom: var(--spacing-md);
}

.cta-links {
    display: flex;
    justify-content: center;
    gap: 1rem;
    flex-wrap: wrap;
    font-size: 0.875rem;
}

.cta-links a {
    color: var(--primary);
    text-decoration: underline;
}

.cta-links a:hover {
    color: var(--primary-hover);
}

/* ===================================
   Footer
   =================================== */
.footer {
    background-color: var(--bg-surface);
    border-top: 1px solid var(--border-color);
    padding: var(--spacing-2xl) 0 var(--spacing-lg);
}

.footer-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 2rem;
    margin-bottom: var(--spacing-xl);
}

@media (min-width: 640px) {
    .footer-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

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

.footer-logo {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: var(--spacing-md);
}

.footer-logo span {
    font-size: 1.25rem;
    font-weight: 700;
}

.footer-desc {
    color: var(--text-secondary);
    margin-bottom: var(--spacing-md);
    font-size: 0.95rem;
}

.footer-contact {
    font-size: 0.875rem;
    color: var(--text-secondary);
}

.footer-contact p {
    margin-bottom: 0.25rem;
}

.footer-col h4 {
    font-size: 1rem;
    margin-bottom: var(--spacing-md);
}

.footer-col ul {
    list-style: none;
}

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

.footer-col ul li a {
    color: var(--text-secondary);
    font-size: 0.95rem;
    transition: color var(--transition-fast);
}

.footer-col ul li a:hover {
    color: var(--primary);
}

.footer-bottom {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    align-items: center;
    padding-top: var(--spacing-lg);
    border-top: 1px solid var(--border-color);
    font-size: 0.875rem;
    color: var(--text-secondary);
}

@media (min-width: 640px) {
    .footer-bottom {
        flex-direction: row;
        justify-content: space-between;
    }
}

.footer-social {
    display: flex;
    gap: 1.5rem;
}

.footer-social a {
    color: var(--text-secondary);
    transition: color var(--transition-fast);
}

.footer-social a:hover {
    color: var(--primary);
}

/* ===================================
   Utility Classes
   =================================== */
.text-center {
    text-align: center;
}

.mb-0 { margin-bottom: 0; }
.mb-1 { margin-bottom: var(--spacing-xs); }
.mb-2 { margin-bottom: var(--spacing-sm); }
.mb-3 { margin-bottom: var(--spacing-md); }
.mb-4 { margin-bottom: var(--spacing-lg); }

.mt-0 { margin-top: 0; }
.mt-1 { margin-top: var(--spacing-xs); }
.mt-2 { margin-top: var(--spacing-sm); }
.mt-3 { margin-top: var(--spacing-md); }
.mt-4 { margin-top: var(--spacing-lg); }

/* ===================================
   BTC Price Widget
   =================================== */
.btc-price-widget {
    position: fixed;
    bottom: 20px;
    left: 20px;
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-hover) 100%);
    color: var(--background-dark);
    padding: 0.75rem 1rem;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    z-index: 998;
    font-size: 0.875rem;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    cursor: pointer;
    transition: all var(--transition-fast);
    max-width: 180px;
}

.btc-price-widget:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-xl);
}

.btc-price-widget .btc-icon {
    font-size: 1.25rem;
}

.btc-price-widget .btc-info {
    display: flex;
    flex-direction: column;
    gap: 0.1rem;
}

.btc-price-widget .btc-label {
    font-size: 0.7rem;
    opacity: 0.9;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.btc-price-widget .btc-price {
    font-size: 1rem;
    font-weight: 700;
}

.btc-price-widget .btc-change {
    font-size: 0.75rem;
    opacity: 0.95;
}

.btc-price-widget .btc-change.positive {
    color: #22C55E;
}

.btc-price-widget .btc-change.negative {
    color: #EF4444;
}

@media (max-width: 767px) {
    .btc-price-widget {
        bottom: 10px;
        left: 10px;
        padding: 0.5rem 0.75rem;
        max-width: 150px;
    }

    .btc-price-widget .btc-price {
        font-size: 0.875rem;
    }
}

/* ===================================
   Toast Notifications
   =================================== */
.toast-container {
    position: fixed;
    top: 100px;
    right: 20px;
    z-index: 999;
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
    pointer-events: none;
}

@media (max-width: 767px) {
    .toast-container {
        top: 80px;
        right: 10px;
        left: 10px;
    }
}

.toast {
    background: var(--bg-surface);
    border: 1px solid var(--border-color);
    border-left: 4px solid var(--primary);
    border-radius: var(--radius-lg);
    padding: 1rem;
    box-shadow: var(--shadow-lg);
    min-width: 300px;
    max-width: 400px;
    pointer-events: all;
    animation: slideInRight 0.3s ease, fadeOut 0.3s ease 4.7s forwards;
    display: flex;
    align-items: flex-start;
    gap: 0.75rem;
}

@media (max-width: 767px) {
    .toast {
        min-width: auto;
        max-width: 100%;
    }
}

@keyframes slideInRight {
    from {
        transform: translateX(100%);
        opacity: 0;
    }
    to {
        transform: translateX(0);
        opacity: 1;
    }
}

@keyframes fadeOut {
    from {
        opacity: 1;
        transform: translateX(0);
    }
    to {
        opacity: 0;
        transform: translateX(100%);
    }
}

.toast-icon {
    flex-shrink: 0;
    width: 2.5rem;
    height: 2.5rem;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-hover) 100%);
    border-radius: 50%;
    color: var(--background-dark);
}

.toast-icon .material-icons {
    font-size: 1.25rem;
}

.toast-content {
    flex: 1;
}

.toast-title {
    font-weight: 600;
    font-size: 0.95rem;
    margin-bottom: 0.25rem;
    color: var(--text-primary);
}

.toast-message {
    font-size: 0.85rem;
    color: var(--text-secondary);
    line-height: 1.4;
}

.toast-close {
    flex-shrink: 0;
    background: transparent;
    border: none;
    color: var(--text-secondary);
    cursor: pointer;
    padding: 0.25rem;
    line-height: 1;
    font-size: 1.25rem;
    transition: color var(--transition-fast);
}

.toast-close:hover {
    color: var(--text-primary);
}