@import url('https://fonts.googleapis.com/css2?family=Plus+Jakarta+Sans:wght@400;500;600;700;800&family=Outfit:wght@400;500;600;700&display=swap');

:root {
    /* Premium Palette - Fintech Indigo */
    --primary: #6366f1;
    --primary-hover: #4f46e5;
    --primary-glow: rgba(99, 102, 241, 0.25);
    --secondary: #94a3b8;
    --accent: #10b981;
    
    /* Light Theme */
    --bg-main: #f8fafc;
    --bg-surface: #ffffff;
    --bg-card: rgba(255, 255, 255, 0.8);
    --text-main: #0f172a;
    --text-muted: #64748b;
    --border: #e2e8f0;
    --glass-border: rgba(255, 255, 255, 0.5);
    
    /* 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), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
    --shadow-glow: 0 0 20px var(--primary-glow);
    
    --radius: 1rem;
    --radius-lg: 1.5rem;
    --header-height: 5rem;
}

[data-theme="dark"] {
    --bg-main: #020617;
    --bg-surface: #0f172a;
    --bg-card: rgba(15, 23, 42, 0.7);
    --text-main: #f8fafc;
    --text-muted: #94a3b8;
    --border: #1e293b;
    --glass-border: rgba(255, 255, 255, 0.05);
    --primary-glow: rgba(99, 102, 241, 0.15);
}

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

body {
    font-family: 'Plus Jakarta Sans', sans-serif;
    background-color: var(--bg-main);
    color: var(--text-main);
    line-height: normal;
    transition: background-color 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    -webkit-font-smoothing: antialiased;
}

h1, h2, h3, h4 {
    font-family: 'Outfit', sans-serif;
    font-weight: 700;
    letter-spacing: -0.02em;
}

/* Layout Utilities */
.container {
    max-width: 1300px;
    margin: 0 auto;
    padding: 0 2rem;
}

.glass-panel {
    background: var(--bg-card);
    backdrop-filter: blur(24px);
    -webkit-backdrop-filter: blur(24px);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-lg);
}

/* Premium Header */
header {
    height: var(--header-height);
    position: sticky;
    top: 0;
    z-index: 1000;
    background: rgba(var(--bg-main), 0.7);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border);
    display: flex;
    align-items: center;
}

.nav-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    width: 100%;
}

.logo {
    font-size: 1.75rem;
    font-weight: 800;
    color: var(--primary);
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.logo span { color: var(--text-main); }

.nav-links {
    display: flex;
    background: var(--border);
    padding: 0.4rem;
    border-radius: var(--radius);
    gap: 0.25rem;
}

.nav-link {
    padding: 0.6rem 1.25rem;
    border-radius: 0.7rem;
    font-weight: 600;
    font-size: 0.95rem;
    color: var(--text-muted);
}

.nav-link.active {
    background: var(--bg-surface);
    color: var(--primary);
    box-shadow: var(--shadow-sm);
}

/* Dashboard UI */
.dashboard {
    display: grid;
    grid-template-columns: 1fr 420px;
    gap: 2rem;
    padding: 2rem 0;
}

.card-stack {
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

.premium-card {
    background: var(--bg-surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 2.5rem;
    box-shadow: var(--shadow-md);
    transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.premium-card:hover {
    box-shadow: var(--shadow-lg);
    border-color: var(--primary);
}

/* Range Input Perfection */
.input-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-end;
    margin-bottom: 1.25rem;
}

.val-badge {
    font-family: 'Outfit', sans-serif;
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary);
}

input[type="range"] {
    -webkit-appearance: none;
    width: 100%;
    height: 8px;
    background: var(--border);
    border-radius: 10px;
    outline: none;
}

input[type="range"]::-webkit-slider-thumb {
    -webkit-appearance: none;
    width: 24px;
    height: 24px;
    background: var(--primary);
    border: 4px solid var(--bg-surface);
    border-radius: 50%;
    cursor: pointer;
    box-shadow: 0 0 15px var(--primary-glow);
    transition: 0.2s;
}

input[type="range"]::-webkit-slider-thumb:hover {
    transform: scale(1.15);
}

/* Summary Board */
.summary-board {
    background: var(--text-main);
    color: #fff;
    padding: 2.5rem;
    border-radius: var(--radius-lg);
    position: sticky;
    top: 7rem;
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

.main-result {
    text-align: center;
    border-bottom: 1px solid rgba(255,255,255,0.1);
    padding-bottom: 2rem;
}

.main-result h2 {
    font-size: 3rem;
    color: var(--primary);
    margin-top: 0.5rem;
}

.stat-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.5rem;
}

.stat-item p { font-size: 0.85rem; color: rgba(255,255,255,0.6); }
.stat-item h4 { font-size: 1.25rem; margin-top: 0.25rem; }

/* Buttons & Hovers */
.btn-pro {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 1rem 2rem;
    background: var(--primary);
    color: #fff;
    font-weight: 700;
    border-radius: var(--radius);
    text-decoration: none;
    transition: 0.3s;
    border: none;
    cursor: pointer;
}

.btn-pro:hover {
    transform: translateY(-4px);
    box-shadow: 0 10px 25px var(--primary-glow);
    background: var(--primary-hover);
}

/* Dark Mode Toggle */
.theme-pill {
    width: 3.5rem;
    height: 3.5rem;
    border-radius: 1rem;
    border: 1px solid var(--border);
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg-surface);
    color: var(--text-main);
    cursor: pointer;
    transition: 0.3s;
}

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

/* Animations */
@keyframes reveal {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}

.reveal { animation: reveal 0.8s cubic-bezier(0.16, 1, 0.3, 1) forwards; }

/* Responsive Dashboard */
@media (max-width: 1100px) {
    .dashboard { grid-template-columns: 1fr; }
    .summary-board { position: relative; top: 0; }
}
@media (max-width: 768px) {
    .container { padding: 0 1rem; }
    .nav-links { display: none; }
}