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

:root {
    --bg-dark: #0a0a0c;
    --bg-card: rgba(20, 20, 25, 0.8);
    --text-primary: #ffffff;
    --text-secondary: #a1a1aa;
    --accent-glow: rgba(0, 255, 255, 0.15);
    
    --strength-0: #ef4444; /* Red */
    --strength-1: #f97316; /* Orange */
    --strength-2: #eab308; /* Yellow */
    --strength-3: #22c55e; /* Green */
    --strength-4: #06b6d4; /* Cyan */
    
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

body {
    font-family: 'Outfit', sans-serif;
    background-color: var(--bg-dark);
    color: var(--text-primary);
    min-height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    overflow-x: hidden;
    background-image: 
        radial-gradient(circle at 20% 20%, rgba(6, 182, 212, 0.05) 0%, transparent 40%),
        radial-gradient(circle at 80% 80%, rgba(139, 92, 246, 0.05) 0%, transparent 40%);
}

.container {
    width: 100%;
    max-width: 500px;
    padding: 2rem;
    z-index: 1;
}

.card {
    background: var(--bg-card);
    backdrop-filter: blur(12px);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 24px;
    padding: 2.5rem;
    box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.5);
    animation: fadeIn 0.8s ease-out;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}

h1 {
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
    background: linear-gradient(to right, #fff, #a1a1aa);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

p.subtitle {
    color: var(--text-secondary);
    margin-bottom: 2rem;
    font-size: 0.95rem;
}

.input-group {
    position: relative;
    margin-bottom: 1.5rem;
}

input {
    width: 100%;
    background: rgba(0, 0, 0, 0.3);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 12px;
    padding: 1rem 1.2rem;
    padding-right: 3.5rem;
    color: white;
    font-size: 1.1rem;
    font-family: inherit;
    outline: none;
    transition: var(--transition);
}

input:focus {
    border-color: rgba(6, 182, 212, 0.5);
    box-shadow: 0 0 0 4px var(--accent-glow);
}

.toggle-btn {
    position: absolute;
    right: 1rem;
    top: 50%;
    transform: translateY(-50%);
    background: none;
    border: none;
    color: var(--text-secondary);
    cursor: pointer;
    padding: 0.5rem;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
}

.toggle-btn:hover {
    color: white;
}

/* Strength Bar */
.strength-meter {
    height: 6px;
    background: rgba(255, 255, 255, 0.05);
    border-radius: 10px;
    margin-bottom: 1.5rem;
    overflow: hidden;
}

.strength-bar {
    height: 100%;
    width: 0%;
    background: var(--strength-0);
    transition: width 0.5s cubic-bezier(0.4, 0, 0.2, 1), background 0.3s ease;
    box-shadow: 0 0 10px rgba(0, 0, 0, 0.2);
}

.status-label {
    display: flex;
    justify-content: space-between;
    font-size: 0.85rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: 2rem;
}

#strength-text {
    transition: color 0.3s ease;
}

/* Stats Grid */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 0.75rem;
}

@media (max-width: 480px) {
    .stats-grid {
        grid-template-columns: 1fr;
    }
}

.stat-card {
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid rgba(255, 255, 255, 0.05);
    border-radius: 16px;
    padding: 1.2rem;
    transition: var(--transition);
}

.stat-card:hover {
    background: rgba(255, 255, 255, 0.05);
    transform: translateY(-2px);
}

.stat-label {
    display: block;
    color: var(--text-secondary);
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    margin-bottom: 0.4rem;
}

.stat-value {
    display: block;
    font-size: 1.1rem;
    font-weight: 700;
    color: white;
}

.stat-value.time {
    font-size: 0.95rem;
    word-break: break-word;
}

/* Requirements list */
.requirements {
    margin-top: 2rem;
    padding-top: 1.5rem;
    border-top: 1px solid rgba(255, 255, 255, 0.05);
}

.requirement {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.85rem;
    color: var(--text-secondary);
    margin-bottom: 0.5rem;
    transition: var(--transition);
}

.requirement.met {
    color: #22c55e;
}

.requirement i {
    font-size: 0.7rem;
}

footer {
    position: fixed;
    bottom: 2rem;
    color: var(--text-secondary);
    font-size: 0.8rem;
    opacity: 0.5;
}