/* Futuristic Dark Cyberpunk / Glassmorphism Design System */
:root {
    --bg-dark: #0a0e17;
    --bg-card: rgba(16, 24, 39, 0.85);
    --border-color: rgba(59, 130, 246, 0.25);
    --border-hover: rgba(59, 130, 246, 0.6);
    --primary: #3b82f6;
    --primary-glow: rgba(59, 130, 246, 0.4);
    --cyan: #06b6d4;
    --cyan-glow: rgba(6, 182, 212, 0.4);
    --gold: #f59e0b;
    --green: #10b981;
    --red: #ef4444;
    --font-sans: 'Outfit', -apple-system, BlinkMacSystemFont, sans-serif;
    --font-mono: 'JetBrains Mono', 'Fira Code', monospace;
}

* {
    box-sizing: border-box;
}

body {
    background-color: var(--bg-dark);
    background-image: 
        radial-gradient(at 0% 0%, rgba(59, 130, 246, 0.12) 0px, transparent 50%),
        radial-gradient(at 100% 100%, rgba(6, 182, 212, 0.1) 0px, transparent 50%),
        radial-gradient(at 50% 50%, rgba(15, 23, 42, 0.8) 0px, transparent 100%);
    background-attachment: fixed;
    color: #f1f5f9;
    font-family: var(--font-sans);
    min-height: 100vh;
}

.glass-panel {
    background: var(--bg-card);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.4);
    transition: all 0.3s ease;
}

.glass-panel:hover {
    border-color: var(--border-hover);
}

.brand-title {
    font-weight: 800;
    letter-spacing: 1px;
    background: linear-gradient(135deg, #60a5fa 0%, #38bdf8 50%, #2dd4bf 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.password-display-box {
    background: rgba(3, 7, 18, 0.9);
    border: 2px solid rgba(59, 130, 246, 0.4);
    border-radius: 12px;
    padding: 1.25rem;
    position: relative;
    box-shadow: 0 4px 25px rgba(0, 0, 0, 0.6), inset 0 2px 8px rgba(0, 0, 0, 0.8);
    transition: border-color 0.3s ease;
}

.password-display-box:focus-within, .password-display-box:hover {
    border-color: var(--cyan);
    box-shadow: 0 0 20px var(--cyan-glow);
}

.password-text {
    font-family: var(--font-mono);
    font-size: 1.4rem;
    font-weight: 600;
    word-break: break-all;
    letter-spacing: 1.5px;
    color: #f8fafc;
    min-height: 2.2rem;
    display: flex;
    align-items: center;
}

/* Syntax Highlighting for Password Characters */
.char-digit { color: #38bdf8; font-weight: 700; }
.char-symbol { color: #f59e0b; font-weight: 700; }
.char-upper { color: #ec4899; }
.char-lower { color: #e2e8f0; }

.strength-bar-bg {
    height: 8px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 4px;
    overflow: hidden;
}

.strength-bar-fill {
    height: 100%;
    width: 0%;
    transition: width 0.4s ease, background-color 0.4s ease;
    border-radius: 4px;
}

.nav-pills .nav-link {
    color: #94a3b8;
    border-radius: 10px;
    padding: 0.6rem 1.1rem;
    font-weight: 600;
    transition: all 0.2s ease;
}

.nav-pills .nav-link.active {
    background: linear-gradient(135deg, var(--primary) 0%, var(--cyan) 100%);
    color: #fff;
    box-shadow: 0 4px 15px var(--primary-glow);
}

.form-check-input:checked {
    background-color: var(--cyan);
    border-color: var(--cyan);
    box-shadow: 0 0 10px var(--cyan-glow);
}

.form-range::-webkit-slider-thumb {
    background: var(--cyan);
    box-shadow: 0 0 10px var(--cyan-glow);
}

.btn-cyber {
    background: linear-gradient(135deg, var(--primary) 0%, var(--cyan) 100%);
    border: none;
    color: #fff;
    font-weight: 700;
    letter-spacing: 0.5px;
    box-shadow: 0 4px 15px var(--primary-glow);
    transition: all 0.25s ease;
}

.btn-cyber:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px var(--cyan-glow);
    color: #fff;
}

.crack-stat-card {
    background: rgba(3, 7, 18, 0.6);
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: 10px;
    padding: 0.8rem 1rem;
    text-align: center;
}

.badge-entropy {
    font-family: var(--font-mono);
    font-size: 0.85rem;
    padding: 0.4rem 0.8rem;
    border-radius: 20px;
    border: 1px solid rgba(255, 255, 255, 0.2);
}