:root {
    --bg-color: #0a0a0f;
    --text-primary: #ffffff;
    --text-secondary: #a0a0b0;
    --accent-color: #6c5ce7;
    --accent-glow: rgba(108, 92, 231, 0.4);
    --glass-bg: rgba(255, 255, 255, 0.05);
    --glass-border: rgba(255, 255, 255, 0.1);
    --card-bg: rgba(0, 0, 0, 0.2);
    --success-color: #00b894;
    --error-color: #ff7675;
}

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

body {
    font-family: 'Outfit', sans-serif;
    background-color: var(--bg-color);
    color: var(--text-primary);
    min-height: 100vh;
    padding: 20px;
}

.background-glow {
    position: fixed;
    top: -20%;
    left: -20%;
    width: 70vw;
    height: 70vw;
    background: radial-gradient(circle, var(--accent-glow) 0%, transparent 70%);
    border-radius: 50%;
    z-index: -1;
    filter: blur(100px);
    animation: float 20s infinite alternate;
}

@keyframes float {
    from {
        transform: translate(0, 0);
    }

    to {
        transform: translate(10%, 10%);
    }
}

.container {
    max-width: 900px;
    margin: 0 auto;
    padding: 2rem;
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

header {
    text-align: center;
    margin-bottom: 1rem;
}

h1 {
    font-size: 2.5rem;
    font-weight: 700;
    background: linear-gradient(to right, #fff, var(--text-secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    margin-bottom: 0.5rem;
}

.subtitle {
    color: var(--text-secondary);
    font-size: 1.1rem;
}

.glass-panel {
    background: var(--glass-bg);
    backdrop-filter: blur(12px);
    border: 1px solid var(--glass-border);
    border-radius: 20px;
    padding: 2rem;
    box-shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.3);
}

.equation-display {
    font-size: 1.5rem;
    text-align: center;
    margin-bottom: 2rem;
    font-family: monospace;
    color: var(--accent-color);
}

.input-group {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    margin-bottom: 1rem;
}

.input-group label {
    font-size: 0.9rem;
    color: var(--text-secondary);
}

.input-group input {
    background: var(--card-bg);
    border: 1px solid var(--glass-border);
    padding: 1rem;
    color: white;
    border-radius: 10px;
    font-family: inherit;
    font-size: 1rem;
    transition: all 0.3s ease;
}

.input-group input:focus {
    outline: none;
    border-color: var(--accent-color);
    box-shadow: 0 0 15px var(--accent-glow);
}

#quadratic-form {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.5rem;
    align-items: end;
}

.btn-primary {
    background: var(--accent-color);
    color: white;
    border: none;
    padding: 1rem 2rem;
    border-radius: 10px;
    font-weight: 600;
    cursor: pointer;
    transition: transform 0.2s, box-shadow 0.2s;
    grid-column: 1 / -1;
    margin-top: 1rem;
    font-size: 1.1rem;
}

/* Ajuste para móviles para que no se rompa */
@media (max-width: 600px) {
    #quadratic-form {
        grid-template-columns: 1fr;
    }
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.2);
}

.hidden {
    display: none;
}

.results {
    margin-top: 2rem;
    padding-top: 2rem;
    border-top: 1px solid var(--glass-border);
    animation: slideUp 0.5s ease-out;
}

@keyframes slideUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.result-cards {
    display: flex;
    gap: 1rem;
    margin: 1.5rem 0;
    flex-wrap: wrap;
}

.card {
    flex: 1;
    background: var(--card-bg);
    padding: 1.5rem;
    border-radius: 15px;
    text-align: center;
    min-width: 150px;
}

.card .label {
    display: block;
    color: var(--text-secondary);
    font-size: 0.9rem;
    margin-bottom: 0.5rem;
}

.card .value {
    font-size: 1.5rem;
    font-weight: 600;
}

.nature-message {
    text-align: center;
    color: var(--text-secondary);
    font-style: italic;
}

#graph-container {
    height: 500px;
    position: relative;
}

footer {
    text-align: center;
    padding: 2rem;
    color: var(--text-secondary);
    font-size: 0.9rem;
    margin-top: auto;
}

/* Responsivo */
@media (max-width: 600px) {
    h1 {
        font-size: 2rem;
    }

    .equation-display {
        font-size: 1.2rem;
    }

    .result-cards {
        flex-direction: column;
    }
}