@import url('https://fonts.googleapis.com/css2?family=Outfit:wght@300;400;600;800&family=Space+Grotesk:wght@500;700&display=swap');

:root {
    --bg-base: #050505;
    --bg-glass: rgba(15, 15, 20, 0.6);
    --bg-glass-hover: rgba(25, 25, 30, 0.8);
    --border-glass: rgba(255, 255, 255, 0.08);
    --text-main: #F3F4F6;
    --text-muted: #9CA3AF;
    --accent-neon: #00F0FF;
    --accent-gold: #FFD700;
    --accent-purple: #8A2BE2;
    --gradient-primary: linear-gradient(135deg, var(--accent-neon), var(--accent-purple));
    --shadow-neon: 0 0 20px rgba(0, 240, 255, 0.3);
    --shadow-gold: 0 0 20px rgba(255, 215, 0, 0.2);
    --font-ui: 'Outfit', sans-serif;
    --font-display: 'Space Grotesk', sans-serif;
    --radius: 16px;
}

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

body {
    background-color: var(--bg-base);
    color: var(--text-main);
    font-family: var(--font-ui);
    min-height: 100vh;
    overflow-x: hidden;
    background-image: 
        linear-gradient(rgba(5, 5, 5, 0.70), rgba(5, 5, 5, 0.85)),
        url('logo.png');
    background-size: 50%;
    background-position: center;
    background-attachment: fixed;
    background-repeat: no-repeat;
}

/* Utilities */
.hidden { display: none !important; }
.glass-panel {
    background: var(--bg-glass);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid var(--border-glass);
    border-radius: var(--radius);
    box-shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.37);
}

/* Header */
.header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1.5rem 3rem;
    position: sticky;
    top: 0;
    z-index: 1000;
    background: var(--bg-glass);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border-glass);
    box-shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.37);
}

.logo {
    font-family: var(--font-display);
    font-size: 2rem;
    font-weight: 700;
    letter-spacing: -1px;
    display: flex;
    align-items: center;
    gap: 10px;
}

.logo span {
    color: var(--accent-gold);
    text-shadow: var(--shadow-gold);
}

.nav {
    display: flex;
    gap: 2rem;
}

.nav-btn {
    background: transparent;
    border: none;
    color: var(--text-muted);
    font-family: var(--font-display);
    font-size: 1.1rem;
    font-weight: 500;
    cursor: pointer;
    position: relative;
    padding: 0.5rem 0;
    transition: color 0.3s ease;
}

.nav-btn::after {
    content: '';
    position: absolute;
    bottom: 0; left: 0; width: 0; height: 2px;
    background: var(--gradient-primary);
    transition: width 0.3s ease;
}

.nav-btn:hover, .nav-btn.active {
    color: var(--text-main);
}

.nav-btn.active::after {
    width: 100%;
    box-shadow: var(--shadow-neon);
}

/* Main Content */
.main-container {
    max-width: 1300px;
    margin: 2rem auto;
    padding: 0 2rem;
}

/* Hero Section */
.hero {
    text-align: center;
    padding: 4rem 2rem;
    margin-bottom: 3rem;
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0; left: 0; right: 0; height: 1px;
    background: var(--gradient-primary);
}

.hero h1 {
    font-family: var(--font-display);
    font-size: 3.5rem;
    font-weight: 700;
    margin-bottom: 1rem;
    background: linear-gradient(to right, #fff, #a5a5a5);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.hero p {
    font-size: 1.2rem;
    color: var(--text-muted);
    max-width: 600px;
    margin: 0 auto;
}

/* Uploader Section */
.data-uploader {
    padding: 2rem;
    text-align: center;
    border: 2px dashed var(--accent-neon);
    background: rgba(0, 240, 255, 0.02);
    border-radius: var(--radius);
    margin-bottom: 3rem;
    transition: all 0.3s ease;
}

.data-uploader.dragover {
    background: rgba(0, 240, 255, 0.1);
    box-shadow: var(--shadow-neon);
}

.data-uploader p {
    margin-bottom: 1rem;
    font-size: 1.1rem;
}

#file-upload { display: none; }

.upload-btn {
    display: inline-block;
    padding: 0.8rem 2rem;
    background: var(--border-glass);
    border: 1px solid var(--accent-neon);
    color: var(--accent-neon);
    border-radius: 30px;
    cursor: pointer;
    font-family: var(--font-display);
    font-weight: 700;
    transition: all 0.3s ease;
}

.upload-btn:hover {
    background: var(--accent-neon);
    color: #000;
    box-shadow: var(--shadow-neon);
}

/* Controls */
.controls {
    display: flex;
    gap: 1.5rem;
    padding: 2rem;
    margin-bottom: 2rem;
    flex-wrap: wrap;
    align-items: flex-end;
}

.input-group {
    display: flex;
    flex-direction: column;
    flex: 1;
    min-width: 200px;
}

.input-group label {
    font-family: var(--font-display);
    font-size: 0.9rem;
    color: var(--accent-gold);
    margin-bottom: 0.5rem;
    text-transform: uppercase;
    letter-spacing: 1px;
}

select, input {
    background: rgba(0, 0, 0, 0.5);
    border: 1px solid var(--border-glass);
    color: var(--text-main);
    padding: 1rem;
    border-radius: 8px;
    font-size: 1.1rem;
    font-family: var(--font-ui);
    transition: all 0.3s ease;
}

select {
    appearance: none;
    -webkit-appearance: none;
    -moz-appearance: none;
    background-image: url('data:image/svg+xml;utf8,<svg fill="%2300F0FF" height="24" viewBox="0 0 24 24" width="24" xmlns="http://www.w3.org/2000/svg"><path d="M7 10l5 5 5-5z"/></svg>');
    background-repeat: no-repeat;
    background-position: right 1rem center;
    background-size: 1.5rem;
    padding-right: 3rem;
    cursor: pointer;
}

select option {
    background: #0f0f14;
    color: #F3F4F6;
    padding: 10px;
}

select:focus, input:focus {
    outline: none;
    border-color: var(--accent-neon);
    box-shadow: 0 0 10px rgba(0, 240, 255, 0.2);
}

.btn-run {
    background: var(--gradient-primary);
    color: #fff;
    border: none;
    padding: 1rem 2.5rem;
    border-radius: 8px;
    font-family: var(--font-display);
    font-size: 1.1rem;
    font-weight: 700;
    cursor: pointer;
    transition: all 0.3s ease;
    height: 54px; /* align with inputs */
}

.btn-run:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-neon);
}

/* Stats */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1.5rem;
    margin-bottom: 3rem;
}

.stat-card {
    padding: 2rem;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.stat-card::after {
    content: '';
    position: absolute;
    top: 0; right: 0; width: 30px; height: 30px;
    background: var(--accent-gold);
    filter: blur(30px);
    opacity: 0.5;
}

.stat-card h3 {
    color: var(--text-muted);
    font-size: 1rem;
    text-transform: uppercase;
    letter-spacing: 2px;
    margin-bottom: 0.5rem;
}

.stat-card .value {
    font-family: var(--font-display);
    font-size: 3rem;
    font-weight: 700;
    color: var(--text-main);
}

/* Charts and Tables */
.chart-container {
    padding: 2rem;
    margin-bottom: 3rem;
    position: relative;
    height: 500px;
    width: 100%;
}

.table-container {
    padding: 2rem;
    margin-bottom: 3rem;
}

.section-title {
    font-family: var(--font-display);
    font-size: 1.8rem;
    margin-bottom: 1.5rem;
    color: var(--text-main);
}

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

th {
    text-align: left;
    padding: 1rem;
    color: var(--text-muted);
    font-weight: 600;
    border-bottom: 1px solid var(--border-glass);
    cursor: help;
}

td {
    padding: 1.2rem 1rem;
    border-bottom: 1px solid rgba(255, 255, 255, 0.03);
}

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

.num-badge {
    background: rgba(255, 215, 0, 0.1);
    color: var(--accent-gold);
    padding: 6px 14px;
    border-radius: 20px;
    font-family: var(--font-display);
    font-weight: 700;
    font-size: 1.1rem;
    border: 1px solid rgba(255, 215, 0, 0.3);
    box-shadow: 0 0 10px rgba(255, 215, 0, 0.1);
}

.diff-pos { color: #10B981; font-weight: 700; text-shadow: 0 0 10px rgba(16, 185, 129, 0.4); }
.diff-neg { color: #EF4444; }

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

@keyframes pulse {
    0% { opacity: 0.6; transform: scale(0.98); }
    50% { opacity: 1; transform: scale(1.02); }
    100% { opacity: 0.6; transform: scale(0.98); }
}

.animate-in {
    animation: slideUp 0.6s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

/* Mobile Responsiveness */
@media (max-width: 768px) {
    .header {
        flex-direction: column;
        padding: 1rem;
        gap: 1rem;
    }
    
    .nav {
        flex-wrap: wrap;
        justify-content: center;
        gap: 0.5rem;
    }

    .nav-btn {
        font-size: 0.95rem;
        padding: 0.5rem;
    }

    .hero h1 {
        font-size: 2rem;
    }
    
    .hero p {
        font-size: 1rem;
    }
    
    .hero {
        padding: 2rem 1rem;
    }

    .glass-panel {
        padding: 1.5rem !important;
    }

    .controls {
        flex-direction: column;
        align-items: stretch;
        gap: 1rem;
        padding: 1.5rem;
    }

    .input-group, .btn-run {
        width: 100%;
        min-width: unset;
    }
    
    .btn-run {
        margin-top: 0.5rem;
    }

    .table-container {
        overflow-x: auto;
        padding: 1rem;
    }
    
    .smorfia-grid {
        grid-template-columns: 1fr !important;
    }

    table {
        min-width: 800px; /* Force table width so it can be scrolled horizontally */
    }

    .chart-container {
        height: 350px;
        padding: 1rem;
    }
    
    .stat-card .value {
        font-size: 2.2rem;
    }
}

.smorfia-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
}