/* ---------------- Variables ---------------- */
:root {
    --primary: #00796b;      /* Verde financiero */
    --secondary: #004d40;    /* Verde oscuro */
    --accent: #00bfa5;       /* Verde brillante */
    --bg: #00796b;           /* Fondo general */
    --card-bg: #ffffff;       /* Fondo de contenedores */
    --text-dark: #1a1a1a;
    --text-light: #555;
    --border-radius: 12px;
    --shadow: 0 6px 20px rgba(0,0,0,0.08);
    --transition: 0.3s ease;
}

/* ---------------- Reset básico ---------------- */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}

body {
    background-color: var(--bg);
    color: var(--text-dark);
    padding: 20px;
}

/* ---------------- Header ---------------- */
header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    background-color: var(--primary);
    color: #fff;
    padding: 20px 30px;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow);
    margin-bottom: 30px;
}

header h1 {
    font-size: 1.8rem;
}

header a {
    text-decoration: none;
    color: #fff;
    background-color: var(--accent);
    padding: 8px 16px;
    border-radius: var(--border-radius);
    font-weight: 600;
    transition: all 0.3s ease;
}

header a:hover {
    background-color: #00e0c2;
    transform: translateY(-2px);
}

/* ---------------- Contenedor principal ---------------- */
.container {
    max-width: 900px;
    margin: 0 auto;
    background-color: var(--card-bg);
    padding: 30px;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow);
    transition: var(--transition);
}

/* ---------------- Formularios de Ingresos y Egresos ---------------- */
#ingresos-form, #egresos-form {
    background: linear-gradient(145deg, #ffffff, #e0f2f1);
    padding: 25px;
    border-radius: var(--border-radius);
    box-shadow: 0 8px 20px rgba(0,0,0,0.08);
    margin-bottom: 25px;
    transition: transform 0.2s ease, box-shadow 0.3s ease;
}

#ingresos-form:hover, #egresos-form:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 25px rgba(0,0,0,0.12);
}

#ingresos-form h2, #egresos-form h2 {
    color: var(--primary);
    font-size: 1.5rem;
    margin-bottom: 20px;
    text-shadow: 1px 1px 2px rgba(0,0,0,0.05);
}

/* Labels */
label {
    font-weight: 500;
    margin-bottom: 5px;
    display: block;
}

/* Inputs */
input[type="text"], input[type="number"], select {
    width: 100%;
    padding: 10px 12px;
    margin-bottom: 15px;
    border: none;
    border-radius: var(--border-radius);
    outline: none;
    font-size: 14px;
    font-weight: 500;
    background: linear-gradient(145deg, #ffffff, #dff6f0);
    box-shadow: inset 0 4px 8px rgba(0,0,0,0.08);
    transition: all 0.3s ease;
}

input[type="text"]:focus, input[type="number"]:focus, select:focus {
    background: linear-gradient(145deg, #dff6f0, #ffffff);
    box-shadow: inset 0 4px 12px rgba(0,0,0,0.15);
}

/* ---------------- Botones ---------------- */
button {
    background: linear-gradient(145deg, var(--primary), var(--accent));
    color: #fff;
    border: none;
    padding: 10px 20px;
    border-radius: var(--border-radius);
    cursor: pointer;
    font-weight: 600;
    font-size: 14px;
    box-shadow: 0 6px 12px rgba(0,0,0,0.2), 0 0 12px rgba(0,191,165,0.3);
    transition: all 0.3s ease;
    margin-top: 5px;
}

button:hover {
    background: linear-gradient(145deg, var(--accent), var(--primary));
    transform: translateY(-2px);
    box-shadow: 0 8px 18px rgba(0,0,0,0.25), 0 0 15px rgba(0,191,165,0.5);
}

button:active {
    transform: translateY(1px);
    box-shadow: 0 4px 8px rgba(0,0,0,0.15);
}

/* Acciones */
.acciones {
    display: flex;
    justify-content: flex-end;
    gap: 10px;
    flex-wrap: wrap;
    margin-top: 10px;
}

/* ---------------- Resultados ---------------- */
#resultado-flujo-caja {
    background: linear-gradient(145deg, #ffffff, #e0f2f1);
    padding: 25px;
    border-radius: var(--border-radius);
    box-shadow: 0 8px 20px rgba(0,0,0,0.08);
    transition: transform 0.2s ease, box-shadow 0.3s ease;
}

#resultado-flujo-caja:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 25px rgba(0,0,0,0.12);
}

#resultado-flujo-caja h2 {
    color: var(--primary);
    font-size: 1.5rem;
    margin-bottom: 20px;
}

#resultado-flujo-caja h3 {
    color: var(--secondary);
    margin-top: 15px;
    font-size: 1.3rem;
}

/* Listas de ingresos/egresos */
#resultado-flujo-caja ul {
    list-style: none;
    padding: 0;
    display: flex;
    flex-direction: column;
    gap: 10px;
}

#resultado-flujo-caja ul li {
    display: flex;
    justify-content: space-between;
    align-items: center;
    background: linear-gradient(145deg, #ffffff, #d1f2eb);
    padding: 12px 15px;
    border-radius: var(--border-radius);
    font-weight: 500;
    box-shadow: 0 4px 10px rgba(0,0,0,0.05);
    transition: transform 0.2s ease, box-shadow 0.3s ease;
}

#resultado-flujo-caja ul li:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 16px rgba(0,0,0,0.1);
}

/* Texto de monto destacado */
#resultado-flujo-caja ul li span.amount {
    font-weight: 600;
    color: var(--secondary);
}

/* Saldo Neto */
#saldo-neto {
    font-size: 2rem;
    font-weight: bold;
    color: var(--primary);
    margin-top: 20px;
    text-align: right;
    background: linear-gradient(145deg, #e0f7f4, #ffffff);
    padding: 15px;
    border-radius: var(--border-radius);
    box-shadow: 0 6px 18px rgba(0,0,0,0.08);
}

/* ---------------- Responsive ---------------- */
@media (max-width: 768px) {
    #resultado-flujo-caja ul li {
        flex-direction: column;
        align-items: flex-start;
        gap: 5px;
    }

    #saldo-neto {
        text-align: center;
    }

    .acciones {
        flex-direction: column;
        align-items: stretch;
    }

    header {
        flex-direction: column;
        gap: 15px;
    }

    header h1 {
        text-align: center;
    }
}

@media (max-width: 480px) {
    input[type="text"], input[type="number"], select {
        font-size: 13px;
        padding: 8px 10px;
    }

    .acciones button {
        width: 100%;
        font-size: 13px;
    }
}