/* =========================================
   CSS Variables & Design Tokens
   ========================================= */
:root {
    /* Colors - Dark Mode FinTech Palette */
    --bg-base: #05050A;
    --bg-surface: #101018;
    --bg-surface-elevated: #1A1A24;
    
    --text-primary: #F8F9FA;
    --text-secondary: #A0A0AB;
    --text-muted: #6C6C77;
    
    --accent-primary: #00E5FF; /* Electric Cyan */
    --accent-primary-hover: #00B8CC;
    --accent-secondary: #7000FF; /* Deep Purple */
    
    --status-success: #00E676;
    --status-error: #FF1744;
    --status-info: #2979FF;
    
    --glass-bg: rgba(255, 255, 255, 0.03);
    --glass-border: rgba(255, 255, 255, 0.08);
    --glass-shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.37);

    /* Typography */
    --font-sans: 'Inter', system-ui, -apple-system, sans-serif;
    --font-display: 'Outfit', 'Inter', system-ui, sans-serif;
    
    --radius-sm: 8px;
    --radius-md: 16px;
    --radius-lg: 24px;
    
    /* Transitions */
    --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-base: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* =========================================
   Base Styles & Overrides
   ========================================= */
body {
    font-family: var(--font-sans);
    background-color: var(--bg-base);
    color: var(--text-primary);
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
}

h1, h2, h3, h4, .navbar-brand {
    font-family: var(--font-display);
}

/* =========================================
   Utility & Theme Classes
   ========================================= */
.bg-base { background-color: var(--bg-base); }
.text-primary { color: var(--accent-primary) !important; }
.text-success { color: var(--status-success) !important; }
.text-info { color: var(--status-info) !important; }
.text-gradient {
    background: linear-gradient(135deg, var(--accent-primary), #8C00FF);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* Background Glows */
.bg-glow {
    position: absolute;
    width: 600px;
    height: 600px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(0, 229, 255, 0.15) 0%, rgba(0,0,0,0) 70%);
    z-index: -1;
    pointer-events: none;
}
.bg-glow.top-left { top: -200px; left: -200px; }
.bg-glow.bottom-right { bottom: -200px; right: -200px; background: radial-gradient(circle, rgba(112, 0, 255, 0.15) 0%, rgba(0,0,0,0) 70%); }

/* Glassmorphism Card */
.glass-card {
    background: var(--glass-bg);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-lg);
    box-shadow: var(--glass-shadow);
}

/* =========================================
   Component Styles
   ========================================= */

/* Navbar Customization */
.header {
    padding: 1.25rem 0;
    transition: all var(--transition-base);
    border-bottom: 1px solid transparent;
}
.header.scrolled {
    background: rgba(5, 5, 10, 0.8);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--glass-border);
    padding: 0.75rem 0;
}

.nav-link {
    color: var(--text-secondary) !important;
    font-weight: 500;
    font-size: 0.95rem;
    padding: 0.5rem 1.25rem !important;
    transition: color var(--transition-fast);
}
.nav-link:hover {
    color: var(--accent-primary) !important;
}

.logo {
    font-size: 1.5rem;
    font-weight: 700;
    letter-spacing: -0.5px;
    color: var(--text-primary) !important;
}
.logo i { font-size: 2rem; }

/* Buttons */
.btn {
    border-radius: var(--radius-sm);
    font-weight: 600;
    transition: all var(--transition-fast);
    padding: 0.75rem 1.5rem;
}

.btn-primary {
    background: var(--accent-primary);
    border-color: var(--accent-primary);
    color: #000;
}
.btn-primary:hover, .btn-primary:active, .btn-primary:focus {
    background: var(--accent-primary-hover) !important;
    border-color: var(--accent-primary-hover) !important;
    color: #000 !important;
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0, 229, 255, 0.3);
}

.btn-secondary {
    background: var(--glass-bg);
    color: var(--text-primary);
    border: 1px solid var(--glass-border);
}
.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.08);
    color: var(--text-primary);
    border-color: var(--glass-border);
    transform: translateY(-2px);
}

.btn-ghost {
    background: transparent;
    color: var(--text-secondary);
    border: none;
}
.btn-ghost:hover {
    color: var(--text-primary);
    background: rgba(255, 255, 255, 0.05);
}

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

/* Hero Section */
.badge-custom {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--glass-border);
    padding: 0.35rem 1.25rem;
    border-radius: 50px;
    font-size: 0.875rem;
    color: var(--text-secondary);
}
.badge-dot {
    width: 8px;
    height: 8px;
    background: var(--accent-primary);
    border-radius: 50%;
    box-shadow: 0 0 8px var(--accent-primary);
}

/* Calculator Widget */
.calculator-card {
    animation: float 6s ease-in-out infinite;
}

@keyframes float {
    0% { transform: translateY(0px); }
    50% { transform: translateY(-10px); }
    100% { transform: translateY(0px); }
}

.status-indicator {
    font-size: 0.75rem;
    color: var(--status-success);
    display: flex;
    align-items: center;
    gap: 0.4rem;
}
.status-indicator::before {
    content: '';
    display: block;
    width: 6px;
    height: 6px;
    background: var(--status-success);
    border-radius: 50%;
}

.input-group-custom {
    background: var(--bg-surface-elevated);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-md);
    transition: border-color var(--transition-fast);
}
.input-group-custom:focus-within { border-color: var(--accent-primary); }

.calc-input {
    background: transparent;
    border: none;
    color: var(--text-primary);
    font-size: 1.75rem;
    font-weight: 600;
    width: 100%;
    outline: none;
    font-family: var(--font-sans);
}
.calc-input::-webkit-outer-spin-button,
.calc-input::-webkit-inner-spin-button {
    -webkit-appearance: none;
    margin: 0;
}

.currency-selector {
    background: rgba(255,255,255,0.05);
    padding: 0.5rem 0.75rem;
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: background var(--transition-fast);
}
.currency-selector:hover { background: rgba(255,255,255,0.1); }
.currency-selector img { border-radius: 50%; width: 20px; height: 20px; object-fit: cover; }

.exchange-rate-path {
    border-left: 2px solid var(--glass-border);
}
.rate-line i {
    background: var(--bg-surface-elevated);
    width: 24px; height: 24px;
    display: flex; align-items: center; justify-content: center;
    border-radius: 50%;
    font-size: 0.75rem;
    border: 1px solid var(--glass-border);
}
.rate-line.highlight i { color: var(--accent-primary); border-color: var(--accent-primary); }

.input-group-custom.highlight-group {
    background: rgba(0, 229, 255, 0.03);
    border-color: rgba(0, 229, 255, 0.2);
}

/* Features */
.feature-card {
    transition: transform var(--transition-base), border-color var(--transition-base);
}
.feature-card:hover {
    transform: translateY(-8px);
    border-color: rgba(0, 229, 255, 0.3);
}
.icon-box {
    width: 56px; height: 56px;
    background: rgba(0, 229, 255, 0.1);
    border-radius: var(--radius-md);
    display: flex; align-items: center; justify-content: center;
    font-size: 1.5rem; color: var(--accent-primary);
}

/* Testimonials */
.testimonial-card {
    position: relative;
    overflow: hidden;
}
.avatar {
    border-radius: 50%;
    background-size: cover;
    background-position: center;
    border: 2px solid var(--accent-primary);
}

/* CTA */
.cta-box {
    background: linear-gradient(135deg, rgba(0, 229, 255, 0.05) 0%, rgba(112, 0, 255, 0.05) 100%);
    border: 1px solid rgba(0, 229, 255, 0.2);
}

/* Footer */
.footer a:hover {
    color: var(--accent-primary) !important;
}

/* Responsive Overrides */
@media (max-width: 1199.98px) {
    .hero-title { font-size: 3.5rem; }
}

@media (max-width: 991.98px) {
    .navbar-collapse {
        background: rgba(16, 16, 24, 0.95);
        backdrop-filter: blur(20px);
        -webkit-backdrop-filter: blur(20px);
        padding: 2rem;
        border-radius: var(--radius-lg);
        margin-top: 1rem;
        border: 1px solid var(--glass-border);
        box-shadow: 0 20px 40px rgba(0,0,0,0.4);
    }
    .header { padding: 0.75rem 0; }
    .hero { padding-top: 6rem; padding-bottom: 4rem; }
    .hero-title { font-size: 3rem; }
    .section-header h2 { font-size: 2.25rem; }
}

@media (max-width: 767.98px) {
    .hero { padding-top: 5rem; }
    .hero-title { font-size: 2.5rem; line-height: 1.1; }
    .hero-subtitle { font-size: 1.1rem; }
    .calculator-card { padding: 2rem !important; margin-top: 2rem; }
    .calc-input { font-size: 1.5rem; }
    .feature-card { padding: 1.5rem !important; }
    .testimonial-card { padding: 2rem !important; }
    .cta-box { padding: 3rem 1.5rem !important; }
    .cta-box h2 { font-size: 2rem; }
}

@media (max-width: 575.98px) {
    .hero-title { font-size: 2.25rem; }
    .trust-indicators { gap: 1rem !important; }
    .trust-item { font-size: 0.75rem; }
    .btn-lg { padding: 0.875rem 1.5rem; font-size: 1rem; }
    .footer { text-align: center; }
    .social-links { justify-content: center; margin-bottom: 2rem; }
}